diff --git a/Jakefile.js b/Jakefile.js
index 05eaab7c..788e29b9 100644
--- a/Jakefile.js
+++ b/Jakefile.js
@@ -50,6 +50,7 @@ task('build', {async: true}, function () {
             './src/events.js',
             './src/timestep.js',
             './src/dataset.js',
+            './src/dataview.js',
             './src/stack.js',
             './src/range.js',
             './src/eventbus.js',
diff --git a/examples/timeline/05_groups.html b/examples/timeline/05_groups.html
index b586fab9..66b257b2 100644
--- a/examples/timeline/05_groups.html
+++ b/examples/timeline/05_groups.html
@@ -23,32 +23,30 @@
 
 <script>
     var now = moment().minutes(0).seconds(0).milliseconds(0);
+    var groupCount = 3;
+    var itemCount = 20;
 
     // create a dataset with items
     var items = new vis.DataSet();
-    items.add([
-        {id: 1, content: 'item 1<br>start', start: now.clone().add('days', 4)},
-        {id: 2, content: 'item 2', start: now.clone().add('days', -2)},
-        {id: 3, content: 'item 3', start: now.clone().add('days', 2)},
-        {id: 4, content: 'item 4', start: now.clone().add('days', 0), end: now.clone().add('days', 3).toDate()},
-        {id: 5, content: 'item 5', start: now.clone().add('days', 9), type:'point'},
-        {id: 6, content: 'item 6', start: now.clone().add('days', 11)}
-    ]);
+    for (var i = 0; i < itemCount; i++) {
+        var start = now.clone().add('hours', Math.random() * 200);
+        var group = Math.floor(Math.random() * groupCount);
+        items.add({
+            id: i,
+            group: group,
+            content: 'item ' + i,
+            start: start,
+            type: 'point'
+        });
+    }
 
     var groups = new vis.DataSet();
-    groups.add([
-        {id: 1, content: 'Group 1'},
-        {id: 2, content: 'Group 2'},
-        {id: 3, content: 'Group 3'},
-        {id: 4, content: 'Group 4'}
-    ]);
+    for (var g = 0; g < groupCount; g++) {
+        groups.add({id: g, content: 'Group ' + g});
+    }
 
     var container = document.getElementById('visualization');
-    var options = {
-        start: now.clone().add('days', -3),
-        end: now.clone().add('days', 7)
-        //height: '100%'
-    };
+    var options = {};
 
     var timeline = new vis.Timeline(container);
     timeline.setOptions(options);
diff --git a/src/component/groupset.js b/src/component/groupset.js
index b018f4de..96722878 100644
--- a/src/component/groupset.js
+++ b/src/component/groupset.js
@@ -239,6 +239,11 @@ GroupSet.prototype.repaint = function repaint() {
                         }, me.options));
                         itemset.setRange(me.range);
                         itemset.setItems(me.items);
+                        /* TODO: create a DataView for every group
+                        itemset.setItems(new DataView(me.items, {filter: function (item) {
+                            return item.group == id;
+                        }}));
+                        */
                         me.controller.add(itemset);
 
                         group = {
diff --git a/src/component/itemset.js b/src/component/itemset.js
index be6d949f..c58185ed 100644
--- a/src/component/itemset.js
+++ b/src/component/itemset.js
@@ -35,14 +35,20 @@ function ItemSet(parent, depends, options) {
     this.range = null; // Range or Object {start: number, end: number}
 
     this.listeners = {
-        'add': function (event, params) {
-            me._onAdd(params.items);
+        'add': function (event, params, senderId) {
+            if (senderId != me.id) {
+                me._onAdd(params.items);
+            }
         },
-        'update': function (event, params) {
-            me._onUpdate(params.items);
+        'update': function (event, params, senderId) {
+            if (senderId != me.id) {
+                me._onUpdate(params.items);
+            }
         },
-        'remove': function (event, params) {
-            me._onRemove(params.items);
+        'remove': function (event, params, senderId) {
+            if (senderId != me.id) {
+                me._onRemove(params.items);
+            }
         }
     };
 
@@ -400,7 +406,7 @@ ItemSet.prototype.setItems = function setItems(items) {
     if (!items) {
         this.items = null;
     }
-    else if (items instanceof DataSet) {
+    else if (items instanceof DataSet || items instanceof DataView) {
         this.items = items;
     }
     else {
diff --git a/src/dataset.js b/src/dataset.js
index 50b3e316..7c22d42c 100644
--- a/src/dataset.js
+++ b/src/dataset.js
@@ -323,7 +323,7 @@ DataSet.prototype.get = function (args) {
             // return a subset of items
             ids.forEach(function (id) {
                 var castedItem = me._castItem(me.data[id], fieldTypes, fields);
-                if (!castedItem || filter(castedItem)) {
+                if (!castedItem || filter(castedItem)) { // TODO: filter should be applied on the casted item but with all fields
                     me._appendRow(data, columns, castedItem);
                 }
             });
@@ -332,7 +332,7 @@ DataSet.prototype.get = function (args) {
             // return all items
             util.forEach(this.data, function (item) {
                 var castedItem = me._castItem(item);
-                if (!castedItem || filter(castedItem)) {
+                if (!castedItem || filter(castedItem)) {    // TODO: filter should be applied on the casted item but with all fields
                     me._appendRow(data, columns, castedItem);
                 }
             });
@@ -352,7 +352,7 @@ DataSet.prototype.get = function (args) {
             // return a subset of items
             ids.forEach(function (id) {
                 var castedItem = me._castItem(me.data[id], fieldTypes, fields);
-                if (!filter || filter(castedItem)) {
+                if (!filter || filter(castedItem)) {    // TODO: filter should be applied on the casted item but with all fields
                     data.push(castedItem);
                 }
             });
@@ -361,7 +361,7 @@ DataSet.prototype.get = function (args) {
             // return all items
             util.forEach(this.data, function (item) {
                 var castedItem = me._castItem(item, fieldTypes, fields);
-                if (!filter || filter(castedItem)) {
+                if (!filter || filter(castedItem)) {    // TODO: filter should be applied on the casted item but with all fields
                     data.push(castedItem);
                 }
             });
diff --git a/src/dataview.js b/src/dataview.js
new file mode 100644
index 00000000..d7325deb
--- /dev/null
+++ b/src/dataview.js
@@ -0,0 +1,149 @@
+/**
+ * DataView
+ *
+ * a dataview offers a filtered view on a dataset or an other dataview.
+ *
+ * @param {DataSet | DataView} data
+ * @param {Object} [options]   Available options: see method get
+ *
+ * @constructor DataView
+ */
+function DataView (data, options) {
+    this.data = null;
+
+    var me = this;
+    this.listener = function () {
+        me._onEvent.apply(me, arguments);
+    };
+
+    this.options = options || {};
+
+    // event subscribers
+    this.subscribers = {};
+
+    this.setData(data);
+}
+
+/**
+ * Set a data source for the view
+ * @param {DataSet | DataView} data
+ */
+DataView.prototype.setData = function (data) {
+    // unsubscribe from current dataset
+    if (this.data && this.data.unsubscribe) {
+        this.data.unsubscribe('*', this.listener);
+    }
+
+    this.data = data;
+
+    // subscribe to new dataset
+    if (this.data && this.data.subscribe) {
+        this.data.subscribe('*', this.listener);
+    }
+};
+
+/**
+ * Get data from the data view
+ *
+ * Usage:
+ *
+ *     get()
+ *     get(options: Object)
+ *     get(options: Object, data: Array | DataTable)
+ *
+ *     get(id: Number)
+ *     get(id: Number, options: Object)
+ *     get(id: Number, options: Object, data: Array | DataTable)
+ *
+ *     get(ids: Number[])
+ *     get(ids: Number[], options: Object)
+ *     get(ids: Number[], options: Object, data: Array | DataTable)
+ *
+ * Where:
+ *
+ * {Number | String} id         The id of an item
+ * {Number[] | String{}} ids    An array with ids of items
+ * {Object} options             An Object with options. Available options:
+ *                              {String} [type] Type of data to be returned. Can
+ *                                              be 'DataTable' or 'Array' (default)
+ *                              {Object.<String, String>} [fieldTypes]
+ *                              {String[]} [fields] field names to be returned
+ *                              {function} [filter] filter items
+ *                              TODO: implement an option order
+ * {Array | DataTable} [data]   If provided, items will be appended to this
+ *                              array or table. Required in case of Google
+ *                              DataTable.
+ * @param args
+ */
+DataView.prototype.get = function (args) {
+    var me = this;
+
+    // parse the arguments
+    var ids, options, data;
+    var firstType = util.getType(arguments[0]);
+    if (firstType == 'String' || firstType == 'Number' || firstType == 'Array') {
+        // get(id(s) [, options] [, data])
+        ids = arguments[0];  // can be a single id or an array with ids
+        options = arguments[1];
+        data = arguments[2];
+    }
+    else {
+        // get([, options] [, data])
+        options = arguments[0];
+        data = arguments[1];
+    }
+
+    // extend the options with the default options and provided options
+    var viewOptions = util.extend({}, this.options, options);
+
+    // create a combined filter method when needed
+    if (this.options.filter && options && options.filter) {
+        viewOptions.filter = function (item) {
+            return me.options.filter(item) && options.filter(item);
+        }
+    }
+
+    // build up the call to the linked data set
+    var getArguments = [];
+    if (ids != undefined) {
+        getArguments.push(ids);
+    }
+    getArguments.push(viewOptions);
+    getArguments.push(data);
+    return this.data.get.apply(this.data, getArguments);
+};
+
+/**
+ * Event listener. Will propagate all events from the connected data set to
+ * the subscribers of the DataView, but will filter the items and only trigger
+ * when there are changes in the filtered data set.
+ * @param {String} event
+ * @param {Object | null} params
+ * @param {String} senderId
+ * @private
+ */
+DataView.prototype._onEvent = function (event, params, senderId) {
+    var items = params && params.items,
+        data = this.data,
+        fieldId = this.options.fieldId ||
+            (this.data && this.data.options && this.data.options.fieldId) || 'id',
+        filter = this.options.filter,
+        filteredItems = [];
+
+    if (items && data && filter) {
+        filteredItems = data.get(items, {
+            filter: filter
+        }).map(function (item) {
+            return item.id;
+        });
+
+        if (filteredItems.length) {
+            this._trigger(event, {items: filteredItems}, senderId);
+        }
+    }
+};
+
+// copy subscription functionality from DataSet
+DataView.prototype.subscribe = DataSet.prototype.subscribe;
+DataView.prototype.unsubscribe = DataSet.prototype.unsubscribe;
+DataView.prototype._trigger = DataSet.prototype._trigger;
diff --git a/src/module/exports.js b/src/module/exports.js
index 26a91106..9d84c54f 100644
--- a/src/module/exports.js
+++ b/src/module/exports.js
@@ -7,6 +7,7 @@ var vis = {
 
     Controller: Controller,
     DataSet: DataSet,
+    DataView: DataView,
     Range: Range,
     Stack: Stack,
     TimeStep: TimeStep,
diff --git a/src/util.js b/src/util.js
index aac82b9f..e535558d 100644
--- a/src/util.js
+++ b/src/util.js
@@ -78,18 +78,22 @@ util.randomUUID = function randomUUID () {
 };
 
 /**
- * Extend object a with the properties of object b.
+ * Extend object a with the properties of object b or a series of objects
  * Only properties with defined values are copied
  * @param {Object} a
- * @param {Object} b
+ * @param {... Object} b
  * @return {Object} a
  */
 util.extend = function (a, b) {
-    for (var prop in b) {
-        if (b.hasOwnProperty(prop) && b[prop] !== undefined) {
-            a[prop] = b[prop];
+    for (var i = 1, len = arguments.length; i < len; i++) {
+        var other = arguments[i];
+        for (var prop in other) {
+            if (other.hasOwnProperty(prop) && other[prop] !== undefined) {
+                a[prop] = other[prop];
+            }
         }
     }
+
     return a;
 };
 
diff --git a/test/dataset.js b/test/dataset.js
index 153ab00b..20930d88 100644
--- a/test/dataset.js
+++ b/test/dataset.js
@@ -1,3 +1,104 @@
+var assert = require('assert'),
+    moment = require('moment'),
+    vis = require('../vis.js'),
+    DataSet = vis.DataSet;
 
+var now = new Date();
 
-// TODO: extensively test DataSet
\ No newline at end of file
+var data = new DataSet({
+    fieldTypes: {
+        start: 'Date',
+        end: 'Date'
+    }
+});
+
+// add single items with different date types
+data.add({id: 1, content: 'Item 1', start: new Date(now.valueOf())});
+data.add({id: 2, content: 'Item 2', start: now.toISOString()});
+data.add([
+    //{id: 3, content: 'Item 3', start: moment(now)}, // TODO: moment fails, not the same instance
+    {id: 3, content: 'Item 3', start: now},
+    {id: 4, content: 'Item 4', start: '/Date(' + now.valueOf() + ')/'}
+]);
+
+var items = data.get();
+assert.equal(items.length, 4);
+items.forEach(function (item) {
+    assert.ok(item.start instanceof Date);
+});
+
+// get filtered fields only
+var sort = function (a, b) {
+    return a.id > b.id;
+};
+assert.deepEqual(data.get({
+    fields: ['id', 'content']
+}).sort(sort), [
+    {id: 1, content: 'Item 1'},
+    {id: 2, content: 'Item 2'},
+    {id: 3, content: 'Item 3'},
+    {id: 4, content: 'Item 4'}
+]);
+
+
+// cast dates
+assert.deepEqual(data.get({
+    fields: ['id', 'start'],
+    fieldTypes: {start: 'Number'}
+}).sort(sort), [
+    {id: 1, start: now.valueOf()},
+    {id: 2, start: now.valueOf()},
+    {id: 3, start: now.valueOf()},
+    {id: 4, start: now.valueOf()}
+]);
+
+
+// get a single item
+assert.deepEqual(data.get(1, {
+    fields: ['id', 'start'],
+    fieldTypes: {start: 'ISODate'}
+}), {
+    id: 1,
+    start: now.toISOString()
+});
+
+// remove an item
+data.remove(2);
+assert.deepEqual(data.get({
+    fields: ['id']
+}).sort(sort), [
+    {id: 1},
+    {id: 3},
+    {id: 4}
+]);
+
+// add an item
+data.add({id: 5, content: 'Item 5', start: now.valueOf()});
+assert.deepEqual(data.get({
+    fields: ['id']
+}).sort(sort), [
+    {id: 1},
+    {id: 3},
+    {id: 4},
+    {id: 5}
+]);
+
+// update an item
+data.update({id: 5, content: 'changed!'});                         // update item (extend existing fields)
+data.remove(3);                                                    // remove existing item
+data.add({id: 3, other: 'bla'});                                   // add new item
+data.update({id: 6, content: 'created!', start: now.valueOf()});   // this item is not yet existing, create it
+assert.deepEqual(data.get().sort(sort), [
+    {id: 1, content: 'Item 1', start: now},
+    {id: 3, other: 'bla'},
+    {id: 4, content: 'Item 4', start: now},
+    {id: 5, content: 'changed!', start: now},
+    {id: 6, content: 'created!', start: now}
+]);
+
+data.clear();
+
+assert.equal(data.get().length, 0);
+
+
+// TODO: extensively test DataSet
diff --git a/test/dataview.js b/test/dataview.js
new file mode 100644
index 00000000..a51463d1
--- /dev/null
+++ b/test/dataview.js
@@ -0,0 +1,57 @@
+var assert = require('assert'),
+    moment = require('moment'),
+    vis = require('../vis.js'),
+    DataSet = vis.DataSet,
+    DataView = vis.DataView;
+
+
+var groups = new DataSet();
+
+// add items with different groups
+groups.add([
+    {id: 1, content: 'Item 1', group: 1},
+    {id: 2, content: 'Item 2', group: 2},
+    {id: 3, content: 'Item 3', group: 2},
+    {id: 4, content: 'Item 4', group: 1},
+    {id: 5, content: 'Item 5', group: 3}
+]);
+
+var group2 = new DataView(groups, {
+    filter: function (item) {
+        return item.group == 2;
+    }
+});
+
+// test getting the filtered data
+assert.deepEqual(group2.get(), [
+    {id: 2, content: 'Item 2', group: 2},
+    {id: 3, content: 'Item 3', group: 2}
+]);
+
+// test filtering the view contents
+assert.deepEqual(group2.get({
+    filter: function (item) {
+        return item.id > 2;
+    }
+}), [
+    {id: 3, content: 'Item 3', group: 2}
+]);
+
+// test event subscription
+var groupsTriggerCount = 0;
+groups.subscribe('*', function () {
+    groupsTriggerCount++;
+});
+var group2TriggerCount = 0;
+group2.subscribe('*', function () {
+    group2TriggerCount++;
+});
+
+groups.update({id:2, content: 'Item 2 (changed)'});
+assert.equal(groupsTriggerCount, 1);
+assert.equal(group2TriggerCount, 1);
+
+groups.update({id:5, content: 'Item 5 (changed)'});
+assert.equal(groupsTriggerCount, 2);
+assert.equal(group2TriggerCount, 1);
+
diff --git a/vis.js b/vis.js
index bfa99743..c462a301 100644
--- a/vis.js
+++ b/vis.js
@@ -5,7 +5,7 @@
  * A dynamic, browser-based visualization library.
  *
  * @version 0.0.8
- * @date    2013-05-14
+ * @date    2013-05-17
  *
  * @license
  * Copyright (C) 2011-2013 Almende B.V, http://almende.com
@@ -109,18 +109,22 @@ util.randomUUID = function randomUUID () {
 };
 
 /**
- * Extend object a with the properties of object b.
+ * Extend object a with the properties of object b or a series of objects
  * Only properties with defined values are copied
  * @param {Object} a
- * @param {Object} b
+ * @param {... Object} b
  * @return {Object} a
  */
 util.extend = function (a, b) {
-    for (var prop in b) {
-        if (b.hasOwnProperty(prop) && b[prop] !== undefined) {
-            a[prop] = b[prop];
+    for (var i = 1, len = arguments.length; i < len; i++) {
+        var other = arguments[i];
+        for (var prop in other) {
+            if (other.hasOwnProperty(prop) && other[prop] !== undefined) {
+                a[prop] = other[prop];
+            }
         }
     }
+
     return a;
 };
 
@@ -1502,12 +1506,15 @@ TimeStep.prototype.getLabelMajor = function(date) {
  * - add/remove/update data
  * - gives triggers upon changes in the data
  * - can  import/export data in various data formats
+ *
  * @param {Object} [options]   Available options:
  *                             {String} fieldId Field name of the id in the
  *                                              items, 'id' by default.
  *                             {Object.<String, String} fieldTypes
  *                                              A map with field names as key,
  *                                              and the field type as value.
+ *                             TODO: implement an option for a  default order
+ * @constructor DataSet
  */
 function DataSet (options) {
     var me = this;
@@ -1576,9 +1583,7 @@ DataSet.prototype.unsubscribe = function (event, callback) {
  * Trigger an event
  * @param {String} event
  * @param {Object | null} params
- * @param {String} [senderId]       Optional id of the sender. The event will
- *                                  be triggered for all subscribers except the
- *                                  sender itself.
+ * @param {String} [senderId]       Optional id of the sender.
  * @private
  */
 DataSet.prototype._trigger = function (event, params, senderId) {
@@ -1595,20 +1600,20 @@ DataSet.prototype._trigger = function (event, params, senderId) {
     }
 
     subscribers.forEach(function (listener) {
-        if (listener.id != senderId && listener.callback) {
+        if (listener.callback) {
             listener.callback(event, params, senderId || null);
         }
     });
 };
 
 /**
- * Add data. Existing items with the same id will be overwritten.
+ * Add data.
+ * Adding an item will fail when there already is an item with the same id.
  * @param {Object | Array | DataTable} data
- * @param {String} [senderId] Optional sender id, used to trigger events for
- *                            all but this sender's event subscribers.
+ * @param {String} [senderId] Optional sender id
  */
 DataSet.prototype.add = function (data, senderId) {
-    var items = [],
+    var addedItems = [],
         id,
         me = this;
 
@@ -1616,7 +1621,7 @@ DataSet.prototype.add = function (data, senderId) {
         // Array
         data.forEach(function (item) {
             var id = me._addItem(item);
-            items.push(id);
+            addedItems.push(id);
         });
     }
     else if (util.isDataTable(data)) {
@@ -1628,37 +1633,52 @@ DataSet.prototype.add = function (data, senderId) {
                 item[field] = data.getValue(row, col);
             });
             id = me._addItem(item);
-            items.push(id);
+            addedItems.push(id);
         }
     }
     else if (data instanceof Object) {
         // Single item
         id = me._addItem(data);
-        items.push(id);
+        addedItems.push(id);
     }
     else {
         throw new Error('Unknown dataType');
     }
 
-    this._trigger('add', {items: items}, senderId);
+    if (addedItems.length) {
+        this._trigger('add', {items: addedItems}, senderId);
+    }
 };
 
 /**
- * Update existing items. Items with the same id will be merged
+ * Update existing items. When an item does not exist, it will be created
  * @param {Object | Array | DataTable} data
- * @param {String} [senderId] Optional sender id, used to trigger events for
- *                            all but this sender's event subscribers.
+ * @param {String} [senderId] Optional sender id
  */
 DataSet.prototype.update = function (data, senderId) {
-    var items = [],
-        id,
-        me = this;
+    var addedItems = [],
+        updatedItems = [],
+        me = this,
+        fieldId = me.fieldId;
+
+    var addOrUpdate = function (item) {
+        var id = item[fieldId];
+        if (me.data[id]) {
+            // update item
+            id = me._updateItem(item);
+            updatedItems.push(id);
+        }
+        else {
+            // add new item
+            id = me._addItem(item);
+            addedItems.push(id);
+        }
+    };
 
     if (data instanceof Array) {
         // Array
         data.forEach(function (item) {
-            var id = me._updateItem(item);
-            items.push(id);
+            addOrUpdate(item);
         });
     }
     else if (util.isDataTable(data)) {
@@ -1669,55 +1689,82 @@ DataSet.prototype.update = function (data, senderId) {
             columns.forEach(function (field, col) {
                 item[field] = data.getValue(row, col);
             });
-            id = me._updateItem(item);
-            items.push(id);
+            addOrUpdate(item);
         }
     }
     else if (data instanceof Object) {
         // Single item
-        id = me._updateItem(data);
-        items.push(id);
+        addOrUpdate(data);
     }
     else {
         throw new Error('Unknown dataType');
     }
 
-    this._trigger('update', {items: items}, senderId);
+    if (addedItems.length) {
+        this._trigger('add', {items: addedItems}, senderId);
+    }
+    if (updatedItems.length) {
+        this._trigger('update', {items: updatedItems}, senderId);
+    }
 };
 
 /**
- * Get a data item or multiple items
- * @param {String | Number | Array | Object} [ids]   Id of a single item, or an
- *                                          array with multiple id's, or
- *                                          undefined or an Object with options
- *                                          to retrieve all data.
- * @param {Object} [options]                Available options:
- *                                          {String} [type]
- *                                              'DataTable' or 'Array' (default)
- *                                          {Object.<String, String>} [fieldTypes]
- *                                          {String[]} [fields] filter fields
- *                                          {function} [filter] filter items
- * @param {Array | DataTable} [data]        If provided, items will be appended
- *                                          to this array or table. Required
- *                                          in case of Google DataTable
- * @return {Array | Object | DataTable | null} data
+ * Get a data item or multiple items.
+ *
+ * Usage:
+ *
+ *     get()
+ *     get(options: Object)
+ *     get(options: Object, data: Array | DataTable)
+ *
+ *     get(id: Number | String)
+ *     get(id: Number | String, options: Object)
+ *     get(id: Number | String, options: Object, data: Array | DataTable)
+ *
+ *     get(ids: Number[] | String[])
+ *     get(ids: Number[] | String[], options: Object)
+ *     get(ids: Number[] | String[], options: Object, data: Array | DataTable)
+ *
+ * Where:
+ *
+ * {Number | String} id         The id of an item
+ * {Number[] | String{}} ids    An array with ids of items
+ * {Object} options             An Object with options. Available options:
+ *                              {String} [type] Type of data to be returned. Can
+ *                                              be 'DataTable' or 'Array' (default)
+ *                              {Object.<String, String>} [fieldTypes]
+ *                              {String[]} [fields] field names to be returned
+ *                              {function} [filter] filter items
+ *                              TODO: implement an option order
+ * {Array | DataTable} [data]   If provided, items will be appended to this
+ *                              array or table. Required in case of Google
+ *                              DataTable.
+ *
  * @throws Error
  */
-DataSet.prototype.get = function (ids, options, data) {
+DataSet.prototype.get = function (args) {
     var me = this;
 
-    // TODO: simplify handling the inputs. It's quite a mess right now...
-
-    // shift arguments when first argument contains the options
-    if (util.getType(ids) == 'Object') {
-        data = options;
-        options = ids;
-        ids = undefined;
+    // parse the arguments
+    var id, ids, options, data;
+    var firstType = util.getType(arguments[0]);
+    if (firstType == 'String' || firstType == 'Number') {
+        // get(id [, options] [, data])
+        id = arguments[0];
+        options = arguments[1];
+        data = arguments[2];
+    }
+    else if (firstType == 'Array') {
+        // get(ids [, options] [, data])
+        ids = arguments[0];
+        options = arguments[1];
+        data = arguments[2];
+    }
+    else {
+        // get([, options] [, data])
+        options = arguments[0];
+        data = arguments[1];
     }
-
-    var fieldTypes = this._mergeFieldTypes(options && options.fieldTypes);
-    var fields = options && options.fields;
-    var filter = options && options.filter;
 
     // determine the return type
     var type;
@@ -1740,62 +1787,65 @@ DataSet.prototype.get = function (ids, options, data) {
         type = 'Array';
     }
 
+    // get options
+    var fieldTypes = this._mergeFieldTypes(options && options.fieldTypes);
+    var fields = options && options.fields;
+    var filter = options && options.filter;
+
     if (type == 'DataTable') {
         // return a Google DataTable
         var columns = this._getColumnNames(data);
-        if (ids == undefined) {
-            // return all data
-            util.forEach(this.data, function (item) {
-                var castedItem = me._castItem(item);
-                if (!castedItem || filter(castedItem)) {
-                    me._appendRow(data, columns, castedItem);
-                }
-            });
-        }
-        else if (util.isNumber(ids) || util.isString(ids)) {
-            var item = me._castItem(me.data[ids], fieldTypes, fields);
+        if (id != undefined) {
+            // return a single item
+            var item = me._castItem(me.data[id], fieldTypes, fields);
             this._appendRow(data, columns, item);
         }
-        else if (ids instanceof Array) {
+        else if (ids != undefined) {
+            // return a subset of items
             ids.forEach(function (id) {
                 var castedItem = me._castItem(me.data[id], fieldTypes, fields);
-                if (!castedItem || filter(castedItem)) {
+                if (!castedItem || filter(castedItem)) { // TODO: filter should be applied on the casted item but with all fields
                     me._appendRow(data, columns, castedItem);
                 }
             });
         }
         else {
-            throw new TypeError('Parameter "ids" must be ' +
-                'undefined, a String, Number, or Array');
+            // return all items
+            util.forEach(this.data, function (item) {
+                var castedItem = me._castItem(item);
+                if (!castedItem || filter(castedItem)) {    // TODO: filter should be applied on the casted item but with all fields
+                    me._appendRow(data, columns, castedItem);
+                }
+            });
         }
     }
     else {
         // return an array
-        data = data || [];
-        if (ids == undefined) {
-            // return all data
-            util.forEach(this.data, function (item) {
-                var castedItem = me._castItem(item, fieldTypes, fields);
-                if (!filter || filter(castedItem)) {
-                    data.push(castedItem);
-                }
-            });
+        if (!data) {
+            data = [];
         }
-        else if (util.isNumber(ids) || util.isString(ids)) {
+
+        if (id != undefined) {
             // return a single item
-            return this._castItem(me.data[ids], fieldTypes, fields);
+            return this._castItem(me.data[id], fieldTypes, fields);
         }
-        else if (ids instanceof Array) {
+        else if (ids != undefined) {
+            // return a subset of items
             ids.forEach(function (id) {
                 var castedItem = me._castItem(me.data[id], fieldTypes, fields);
-                if (!filter || filter(castedItem)) {
+                if (!filter || filter(castedItem)) {    // TODO: filter should be applied on the casted item but with all fields
                     data.push(castedItem);
                 }
             });
         }
         else {
-            throw new TypeError('Parameter "ids" must be ' +
-                'undefined, a String, Number, or Array');
+            // return all items
+            util.forEach(this.data, function (item) {
+                var castedItem = me._castItem(item, fieldTypes, fields);
+                if (!filter || filter(castedItem)) {    // TODO: filter should be applied on the casted item but with all fields
+                    data.push(castedItem);
+                }
+            });
         }
     }
 
@@ -1832,6 +1882,7 @@ DataSet.prototype.forEach = function (callback, options) {
  *                                      {Object.<String, String>} [fieldTypes]
  *                                      {String[]} [fields] filter fields
  *                                      {function} [filter] filter items
+ *                                      TODO: implement an option order
  * @return {Object[]} mappedItems
  */
 DataSet.prototype.map = function (callback, options) {
@@ -1882,23 +1933,22 @@ DataSet.prototype._mergeFieldTypes = function (fieldTypes) {
  * Remove an object by pointer or by id
  * @param {String | Number | Object | Array} id   Object or id, or an array with
  *                                                objects or ids to be removed
- * @param {String} [senderId] Optional sender id, used to trigger events for
- *                            all but this sender's event subscribers.
+ * @param {String} [senderId] Optional sender id
  */
 DataSet.prototype.remove = function (id, senderId) {
-    var items = [],
+    var removedItems = [],
         me = this;
 
     if (util.isNumber(id) || util.isString(id)) {
         delete this.data[id];
         delete this.internalIds[id];
-        items.push(id);
+        removedItems.push(id);
     }
     else if (id instanceof Array) {
         id.forEach(function (id) {
             me.remove(id);
         });
-        items = items.concat(id);
+        removedItems = items.concat(id);
     }
     else if (id instanceof Object) {
         // search for the object
@@ -1907,19 +1957,20 @@ DataSet.prototype.remove = function (id, senderId) {
                 if (this.data[i] == id) {
                     delete this.data[i];
                     delete this.internalIds[i];
-                    items.push(i);
+                    removedItems.push(i);
                 }
             }
         }
     }
 
-    this._trigger('remove', {items: items}, senderId);
+    if (removedItems.length) {
+        this._trigger('remove', {items: removedItems}, senderId);
+    }
 };
 
 /**
  * Clear the data
- * @param {String} [senderId] Optional sender id, used to trigger events for
- *                            all but this sender's event subscribers.
+ * @param {String} [senderId] Optional sender id
  */
 DataSet.prototype.clear = function (senderId) {
     var ids = Object.keys(this.data);
@@ -2012,18 +2063,25 @@ DataSet.prototype.distinct = function (field) {
 };
 
 /**
- * Add a single item
+ * Add a single item. Will fail when an item with the same id already exists.
  * @param {Object} item
  * @return {String} id
  * @private
  */
 DataSet.prototype._addItem = function (item) {
     var id = item[this.fieldId];
-    if (id == undefined) {
+
+    if (id != undefined) {
+        // check whether this id is already taken
+        if (this.data[id]) {
+            // item already exists
+            throw new Error('Cannot add item: item with id ' + id + ' already exists');
+        }
+    }
+    else {
         // generate an id
         id = util.randomUUID();
         item[this.fieldId] = id;
-
         this.internalIds[id] = item;
     }
 
@@ -2035,7 +2093,6 @@ DataSet.prototype._addItem = function (item) {
         }
     }
     this.data[id] = d;
-    //TODO: fail when an item with this id already exists?
 
     return id;
 };
@@ -2082,7 +2139,9 @@ DataSet.prototype._castItem = function (item, fieldTypes, fields) {
 };
 
 /**
- * Update a single item: merge with existing item
+ * Update a single item: merge with existing item.
+ * Will fail when the item has no id, or when there does not exist an item
+ * with the same id.
  * @param {Object} item
  * @return {String} id
  * @private
@@ -2090,21 +2149,20 @@ DataSet.prototype._castItem = function (item, fieldTypes, fields) {
 DataSet.prototype._updateItem = function (item) {
     var id = item[this.fieldId];
     if (id == undefined) {
-        throw new Error('Item has no id (item: ' + JSON.stringify(item) + ')');
+        throw new Error('Cannot update item: item has no id (item: ' + JSON.stringify(item) + ')');
     }
     var d = this.data[id];
-    if (d) {
-        // merge with current item
-        for (var field in item) {
-            if (item.hasOwnProperty(field)) {
-                var type = this.fieldTypes[field];  // type may be undefined
-                d[field] = util.cast(item[field], type);
-            }
-        }
+    if (!d) {
+        // item doesn't exist
+        throw new Error('Cannot update item: no item with id ' + id + ' found');
     }
-    else {
-        // create new item
-        this._addItem(item);
+
+    // merge with current item
+    for (var field in item) {
+        if (item.hasOwnProperty(field)) {
+            var type = this.fieldTypes[field];  // type may be undefined
+            d[field] = util.cast(item[field], type);
+        }
     }
 
     return id;
@@ -2138,6 +2196,156 @@ DataSet.prototype._appendRow = function (dataTable, columns, item) {
     });
 };
 
+/**
+ * DataView
+ *
+ * a dataview offers a filtered view on a dataset or an other dataview.
+ *
+ * @param {DataSet | DataView} data
+ * @param {Object} [options]   Available options: see method get
+ *
+ * @constructor DataView
+ */
+function DataView (data, options) {
+    this.data = null;
+
+    var me = this;
+    this.listener = function () {
+        me._onEvent.apply(me, arguments);
+    };
+
+    this.options = options || {};
+
+    // event subscribers
+    this.subscribers = {};
+
+    this.setData(data);
+}
+
+/**
+ * Set a data source for the view
+ * @param {DataSet | DataView} data
+ */
+DataView.prototype.setData = function (data) {
+    // unsubscribe from current dataset
+    if (this.data && this.data.unsubscribe) {
+        this.data.unsubscribe('*', this.listener);
+    }
+
+    this.data = data;
+
+    // subscribe to new dataset
+    if (this.data && this.data.subscribe) {
+        this.data.subscribe('*', this.listener);
+    }
+};
+
+/**
+ * Get data from the data view
+ *
+ * Usage:
+ *
+ *     get()
+ *     get(options: Object)
+ *     get(options: Object, data: Array | DataTable)
+ *
+ *     get(id: Number)
+ *     get(id: Number, options: Object)
+ *     get(id: Number, options: Object, data: Array | DataTable)
+ *
+ *     get(ids: Number[])
+ *     get(ids: Number[], options: Object)
+ *     get(ids: Number[], options: Object, data: Array | DataTable)
+ *
+ * Where:
+ *
+ * {Number | String} id         The id of an item
+ * {Number[] | String{}} ids    An array with ids of items
+ * {Object} options             An Object with options. Available options:
+ *                              {String} [type] Type of data to be returned. Can
+ *                                              be 'DataTable' or 'Array' (default)
+ *                              {Object.<String, String>} [fieldTypes]
+ *                              {String[]} [fields] field names to be returned
+ *                              {function} [filter] filter items
+ *                              TODO: implement an option order
+ * {Array | DataTable} [data]   If provided, items will be appended to this
+ *                              array or table. Required in case of Google
+ *                              DataTable.
+ * @param args
+ */
+DataView.prototype.get = function (args) {
+    var me = this;
+
+    // parse the arguments
+    var ids, options, data;
+    var firstType = util.getType(arguments[0]);
+    if (firstType == 'String' || firstType == 'Number' || firstType == 'Array') {
+        // get(id(s) [, options] [, data])
+        ids = arguments[0];  // can be a single id or an array with ids
+        options = arguments[1];
+        data = arguments[2];
+    }
+    else {
+        // get([, options] [, data])
+        options = arguments[0];
+        data = arguments[1];
+    }
+
+    // extend the options with the default options and provided options
+    var viewOptions = util.extend({}, this.options, options);
+
+    // create a combined filter method when needed
+    if (this.options.filter && options && options.filter) {
+        viewOptions.filter = function (item) {
+            return me.options.filter(item) && options.filter(item);
+        }
+    }
+
+    // build up the call to the linked data set
+    var getArguments = [];
+    if (ids != undefined) {
+        getArguments.push(ids);
+    }
+    getArguments.push(viewOptions);
+    getArguments.push(data);
+    return this.data.get.apply(this.data, getArguments);
+};
+
+/**
+ * Event listener. Will propagate all events from the connected data set to
+ * the subscribers of the DataView, but will filter the items and only trigger
+ * when there are changes in the filtered data set.
+ * @param {String} event
+ * @param {Object | null} params
+ * @param {String} senderId
+ * @private
+ */
+DataView.prototype._onEvent = function (event, params, senderId) {
+    var items = params && params.items,
+        data = this.data,
+        fieldId = this.options.fieldId ||
+            (this.data && this.data.options && this.data.options.fieldId) || 'id',
+        filter = this.options.filter,
+        filteredItems = [];
+
+    if (items && data && filter) {
+        filteredItems = data.get(items, {
+            filter: filter
+        }).map(function (item) {
+            return item.id;
+        });
+
+        if (filteredItems.length) {
+            this._trigger(event, {items: filteredItems}, senderId);
+        }
+    }
+};
+
+// copy subscription functionality from DataSet
+DataView.prototype.subscribe = DataSet.prototype.subscribe;
+DataView.prototype.unsubscribe = DataSet.prototype.unsubscribe;
+DataView.prototype._trigger = DataSet.prototype._trigger;
+
 /**
  * @constructor Stack
  * Stacks items on top of each other.
@@ -4105,14 +4313,20 @@ function ItemSet(parent, depends, options) {
     this.range = null; // Range or Object {start: number, end: number}
 
     this.listeners = {
-        'add': function (event, params) {
-            me._onAdd(params.items);
+        'add': function (event, params, senderId) {
+            if (senderId != me.id) {
+                me._onAdd(params.items);
+            }
         },
-        'update': function (event, params) {
-            me._onUpdate(params.items);
+        'update': function (event, params, senderId) {
+            if (senderId != me.id) {
+                me._onUpdate(params.items);
+            }
         },
-        'remove': function (event, params) {
-            me._onRemove(params.items);
+        'remove': function (event, params, senderId) {
+            if (senderId != me.id) {
+                me._onRemove(params.items);
+            }
         }
     };
 
@@ -4470,7 +4684,7 @@ ItemSet.prototype.setItems = function setItems(items) {
     if (!items) {
         this.items = null;
     }
-    else if (items instanceof DataSet) {
+    else if (items instanceof DataSet || items instanceof DataView) {
         this.items = items;
     }
     else {
@@ -5725,6 +5939,11 @@ GroupSet.prototype.repaint = function repaint() {
                         }, me.options));
                         itemset.setRange(me.range);
                         itemset.setItems(me.items);
+                        /* TODO: create a DataView for every group
+                        itemset.setItems(new DataView(me.items, {filter: function (item) {
+                            return item.group == id;
+                        }}));
+                        */
                         me.controller.add(itemset);
 
                         group = {
@@ -6201,6 +6420,7 @@ var vis = {
 
     Controller: Controller,
     DataSet: DataSet,
+    DataView: DataView,
     Range: Range,
     Stack: Stack,
     TimeStep: TimeStep,
diff --git a/vis.min.js b/vis.min.js
index 8c55e9e3..0a2adf79 100644
--- a/vis.min.js
+++ b/vis.min.js
@@ -5,7 +5,7 @@
  * A dynamic, browser-based visualization library.
  *
  * @version 0.0.8
- * @date    2013-05-14
+ * @date    2013-05-17
  *
  * @license
  * Copyright (C) 2011-2013 Almende B.V, http://almende.com
@@ -22,6 +22,6 @@
  * License for the specific language governing permissions and limitations under
  * the License.
  */
-(function(t){if("function"==typeof bootstrap)bootstrap("vis",t);else if("object"==typeof exports)module.exports=t();else if("function"==typeof define&&define.amd)define(t);else if("undefined"!=typeof ses){if(!ses.ok())return;ses.makeVis=t}else"undefined"!=typeof window?window.vis=t():global.vis=t()})(function(){var t;return function(t,e,n){function i(n,r){if(!e[n]){if(!t[n]){var s="function"==typeof require&&require;if(!r&&s)return s(n,!0);if(o)return o(n,!0);throw Error("Cannot find module '"+n+"'")}var a=e[n]={exports:{}};t[n][0].call(a.exports,function(e){var o=t[n][1][e];return i(o?o:e)},a,a.exports)}return e[n].exports}for(var o="function"==typeof require&&require,r=0;n.length>r;r++)i(n[r]);return i}({1:[function(e,n,i){function o(t){var e=this;this.options=t||{},this.data={},this.fieldId=this.options.fieldId||"id",this.fieldTypes={},this.options.fieldTypes&&b.forEach(this.options.fieldTypes,function(t,n){e.fieldTypes[n]="Date"==t||"ISODate"==t||"ASPDate"==t?"Date":t}),this.subscribers={},this.internalIds={}}function r(t,e){this.parent=t,this.options={order:function(t,e){if(t instanceof v){if(e instanceof v){var n=t.data.end-t.data.start,i=e.data.end-e.data.start;return n-i||t.data.start-e.data.start}return-1}return e instanceof v?1:t.data.start-e.data.start}},this.ordered=[],this.setOptions(e)}function s(t){this.id=b.randomUUID(),this.start=0,this.end=0,this.options={min:null,max:null,zoomMin:null,zoomMax:null},this.setOptions(t),this.listeners=[]}function a(){this.subscriptions=[]}function h(){this.id=b.randomUUID(),this.components={},this.repaintTimer=void 0,this.reflowTimer=void 0}function p(){this.id=null,this.parent=null,this.depends=null,this.controller=null,this.options=null,this.frame=null,this.top=0,this.left=0,this.width=0,this.height=0}function c(t,e,n){this.id=b.randomUUID(),this.parent=t,this.depends=e,this.options={},this.setOptions(n)}function u(t,e){this.id=b.randomUUID(),this.container=t,this.options={autoResize:!0},this.listeners={},this.setOptions(e)}function d(t,e,n){this.id=b.randomUUID(),this.parent=t,this.depends=e,this.dom={majorLines:[],majorTexts:[],minorLines:[],minorTexts:[],redundant:{majorLines:[],majorTexts:[],minorLines:[],minorTexts:[]}},this.props={range:{start:0,end:0,minimumStep:0},lineTop:0},this.options={orientation:"bottom",showMinorLabels:!0,showMajorLabels:!0},this.conversion=null,this.range=null,this.setOptions(n)}function l(t,e,n){this.id=b.randomUUID(),this.parent=t,this.depends=e,this.options={style:"box",align:"center",orientation:"bottom",margin:{axis:20,item:10},padding:5},this.dom={};var i=this;this.items=null,this.range=null,this.listeners={add:function(t,e){i._onAdd(e.items)},update:function(t,e){i._onUpdate(e.items)},remove:function(t,e){i._onRemove(e.items)}},this.contents={},this.queue={},this.stack=new r(this),this.conversion=null,n&&this.setOptions(n)}function f(t,e,n){this.parent=t,this.data=e,this.dom=null,this.options=n,this.selected=!1,this.visible=!1,this.top=0,this.left=0,this.width=0,this.height=0}function m(t,e,n){this.props={dot:{left:0,top:0,width:0,height:0},line:{top:0,left:0,width:0,height:0}},f.call(this,t,e,n)}function g(t,e,n){this.props={dot:{top:0,width:0,height:0},content:{height:0,marginLeft:0}},f.call(this,t,e,n)}function v(t,e,n){this.props={content:{left:0,width:0}},f.call(this,t,e,n)}function y(t,e,n){this.id=b.randomUUID(),this.parent=t,this.depends=e,this.options={},this.range=null,this.items=null,this.groups=null,this.contents=[],this.queue={};var i=this;this.listeners={add:function(t,e){i._onAdd(e.items)},update:function(t,e){i._onUpdate(e.items)},remove:function(t,e){i._onRemove(e.items)}},n&&this.setOptions(n)}function w(t,e,n){var i=this;if(this.options={orientation:"bottom",zoomMin:10,zoomMax:31536e10,moveable:!0,zoomable:!0},this.controller=new h,!t)throw Error("No container element provided");this.main=new u(t,{autoResize:!1}),this.controller.add(this.main);var o=S().hours(0).minutes(0).seconds(0).milliseconds(0);this.range=new s({start:o.clone().add("days",-3).valueOf(),end:o.clone().add("days",4).valueOf()}),this.range.subscribe(this.main,"move","horizontal"),this.range.subscribe(this.main,"zoom","horizontal"),this.range.on("rangechange",function(){var t=!0;i.controller.requestReflow(t)}),this.range.on("rangechanged",function(){var t=!0;i.controller.requestReflow(t)}),this.timeaxis=new 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e=t.getFullYear()+Math.round(t.getMonth()/12);t.setFullYear(Math.round(e/this.step)*this.step),t.setMonth(0),t.setDate(0),t.setHours(0),t.setMinutes(0),t.setSeconds(0),t.setMilliseconds(0)}else if(this.scale==TimeStep.SCALE.MONTH)t.getDate()>15?(t.setDate(1),t.setMonth(t.getMonth()+1)):t.setDate(1),t.setHours(0),t.setMinutes(0),t.setSeconds(0),t.setMilliseconds(0);else if(this.scale==TimeStep.SCALE.DAY||this.scale==TimeStep.SCALE.WEEKDAY){switch(this.step){case 5:case 2:t.setHours(24*Math.round(t.getHours()/24));break;default:t.setHours(12*Math.round(t.getHours()/12))}t.setMinutes(0),t.setSeconds(0),t.setMilliseconds(0)}else if(this.scale==TimeStep.SCALE.HOUR){switch(this.step){case 4:t.setMinutes(60*Math.round(t.getMinutes()/60));break;default:t.setMinutes(30*Math.round(t.getMinutes()/30))}t.setSeconds(0),t.setMilliseconds(0)}else if(this.scale==TimeStep.SCALE.MINUTE){switch(this.step){case 15:case 10:t.setMinutes(5*Math.round(t.getMinutes()/5)),t.setSeconds(0);break;case 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TimeStep.SCALE.MONTH:return 0==this.current.getMonth();case TimeStep.SCALE.YEAR:return!1;default:return!1}},TimeStep.prototype.getLabelMinor=function(t){switch(void 0==t&&(t=this.current),this.scale){case TimeStep.SCALE.MILLISECOND:return S(t).format("SSS");case TimeStep.SCALE.SECOND:return S(t).format("s");case TimeStep.SCALE.MINUTE:return S(t).format("HH:mm");case TimeStep.SCALE.HOUR:return S(t).format("HH:mm");case TimeStep.SCALE.WEEKDAY:return S(t).format("ddd D");case TimeStep.SCALE.DAY:return S(t).format("D");case TimeStep.SCALE.MONTH:return S(t).format("MMM");case TimeStep.SCALE.YEAR:return S(t).format("YYYY");default:return""}},TimeStep.prototype.getLabelMajor=function(t){switch(void 0==t&&(t=this.current),this.scale){case TimeStep.SCALE.MILLISECOND:return S(t).format("HH:mm:ss");case TimeStep.SCALE.SECOND:return S(t).format("D MMMM HH:mm");case TimeStep.SCALE.MINUTE:case TimeStep.SCALE.HOUR:return S(t).format("ddd D MMMM");case TimeStep.SCALE.WEEKDAY:case TimeStep.SCALE.DAY:return S(t).format("MMMM YYYY");case TimeStep.SCALE.MONTH:return S(t).format("YYYY");case TimeStep.SCALE.YEAR:return"";default:return""}},o.prototype.subscribe=function(t,e,n){var i=this.subscribers[t];i||(i=[],this.subscribers[t]=i),i.push({id:n?n+"":null,callback:e})},o.prototype.unsubscribe=function(t,e){var n=this.subscribers[t];n&&(this.subscribers[t]=n.filter(function(t){return t.callback!=e}))},o.prototype._trigger=function(t,e,n){if("*"==t)throw Error("Cannot trigger event *");var i=[];t in this.subscribers&&(i=i.concat(this.subscribers[t])),"*"in this.subscribers&&(i=i.concat(this.subscribers["*"])),i.forEach(function(i){i.id!=n&&i.callback&&i.callback(t,e,n||null)})},o.prototype.add=function(t,e){var n,i=[],o=this;if(t instanceof Array)t.forEach(function(t){var e=o._addItem(t);i.push(e)});else if(b.isDataTable(t))for(var r=this._getColumnNames(t),s=0,a=t.getNumberOfRows();a>s;s++){var h={};r.forEach(function(e,n){h[e]=t.getValue(s,n)}),n=o._addItem(h),i.push(n)}else{if(!(t instanceof Object))throw Error("Unknown dataType");n=o._addItem(t),i.push(n)}this._trigger("add",{items:i},e)},o.prototype.update=function(t,e){var n,i=[],o=this;if(t instanceof Array)t.forEach(function(t){var e=o._updateItem(t);i.push(e)});else if(b.isDataTable(t))for(var r=this._getColumnNames(t),s=0,a=t.getNumberOfRows();a>s;s++){var h={};r.forEach(function(e,n){h[e]=t.getValue(s,n)}),n=o._updateItem(h),i.push(n)}else{if(!(t instanceof Object))throw Error("Unknown dataType");n=o._updateItem(t),i.push(n)}this._trigger("update",{items:i},e)},o.prototype.get=function(t,e,n){var i=this;"Object"==b.getType(t)&&(n=e,e=t,t=void 0);var o,r=this._mergeFieldTypes(e&&e.fieldTypes),s=e&&e.fields,a=e&&e.filter;if(e&&e.type){if(o="DataTable"==e.type?"DataTable":"Array",n&&o!=b.getType(n))throw Error('Type of parameter "data" ('+b.getType(n)+") "+"does not correspond with specified options.type ("+e.type+")");if("DataTable"==o&&!b.isDataTable(n))throw Error('Parameter "data" must be a DataTable when options.type is "DataTable"')}else o=n?"DataTable"==b.getType(n)?"DataTable":"Array":"Array";if("DataTable"==o){var h=this._getColumnNames(n);if(void 0==t)b.forEach(this.data,function(t){var e=i._castItem(t);(!e||a(e))&&i._appendRow(n,h,e)});else if(b.isNumber(t)||b.isString(t)){var p=i._castItem(i.data[t],r,s);this._appendRow(n,h,p)}else{if(!(t instanceof Array))throw new TypeError('Parameter "ids" must be undefined, a String, Number, or Array');t.forEach(function(t){var e=i._castItem(i.data[t],r,s);(!e||a(e))&&i._appendRow(n,h,e)})}}else if(n=n||[],void 0==t)b.forEach(this.data,function(t){var e=i._castItem(t,r,s);(!a||a(e))&&n.push(e)});else{if(b.isNumber(t)||b.isString(t))return this._castItem(i.data[t],r,s);if(!(t instanceof Array))throw new TypeError('Parameter "ids" must be undefined, a String, Number, or Array');t.forEach(function(t){var e=i._castItem(i.data[t],r,s);(!a||a(e))&&n.push(e)})}return n},o.prototype.forEach=function(t,e){var n=this._mergeFieldTypes(e&&e.fieldTypes),i=e&&e.fields,o=e&&e.filter,r=this;b.forEach(this.data,function(e,s){var a=r._castItem(e,n,i);(!o||o(a))&&t(a,s)})},o.prototype.map=function(t,e){var n=this._mergeFieldTypes(e&&e.fieldTypes),i=e&&e.fields,o=e&&e.filter,r=this,s=[];return b.forEach(this.data,function(e,a){var h=r._castItem(e,n,i);if(!o||o(h)){var p=t(h,a);s.push(p)}}),s},o.prototype._mergeFieldTypes=function(t){var e={};return this.options&&this.options.fieldTypes&&b.forEach(this.options.fieldTypes,function(t,n){e[n]=t}),t&&b.forEach(t,function(t,n){e[n]=t}),e},o.prototype.remove=function(t,e){var n=[],i=this;if(b.isNumber(t)||b.isString(t))delete this.data[t],delete this.internalIds[t],n.push(t);else if(t instanceof Array)t.forEach(function(t){i.remove(t)}),n=n.concat(t);else if(t instanceof Object)for(var o in this.data)this.data.hasOwnProperty(o)&&this.data[o]==t&&(delete this.data[o],delete this.internalIds[o],n.push(o));this._trigger("remove",{items:n},e)},o.prototype.clear=function(t){var e=Object.keys(this.data);this.data={},this.internalIds={},this._trigger("remove",{items:e},t)},o.prototype.max=function(t){var e=this.data,n=Object.keys(e),i=null,o=null;return n.forEach(function(n){var r=e[n],s=r[t];null!=s&&(!i||s>o)&&(i=r,o=s)}),i},o.prototype.min=function(t){var e=this.data,n=Object.keys(e),i=null,o=null;return n.forEach(function(n){var r=e[n],s=r[t];null!=s&&(!i||o>s)&&(i=r,o=s)}),i},o.prototype.distinct=function(t){var e=this.data,n=[],i=this.options.fieldTypes[t],o=0;for(var r in e)if(e.hasOwnProperty(r)){for(var s=e[r],a=b.cast(s[t],i),h=!1,p=0;o>p;p++)if(n[p]==a){h=!0;break}h||(n[o]=a,o++)}return n},o.prototype._addItem=function(t){var e=t[this.fieldId];void 0==e&&(e=b.randomUUID(),t[this.fieldId]=e,this.internalIds[e]=t);var n={};for(var i in t)if(t.hasOwnProperty(i)){var o=this.fieldTypes[i];n[i]=b.cast(t[i],o)}return this.data[e]=n,e},o.prototype._castItem=function(t,e,n){var i,o=this.fieldId,r=this.internalIds;return t?(i={},e=e||{},n?b.forEach(t,function(t,o){-1!=n.indexOf(o)&&(i[o]=b.cast(t,e[o]))}):b.forEach(t,function(t,n){n==o&&t in r||(i[n]=b.cast(t,e[n]))})):i=null,i},o.prototype._updateItem=function(t){var e=t[this.fieldId];if(void 0==e)throw Error("Item has no id (item: "+JSON.stringify(t)+")");var n=this.data[e];if(n){for(var i in t)if(t.hasOwnProperty(i)){var o=this.fieldTypes[i];n[i]=b.cast(t[i],o)}}else this._addItem(t);return e},o.prototype._getColumnNames=function(t){for(var e=[],n=0,i=t.getNumberOfColumns();i>n;n++)e[n]=t.getColumnId(n)||t.getColumnLabel(n);return e},o.prototype._appendRow=function(t,e,n){var i=t.addRow();e.forEach(function(e,o){t.setValue(i,o,n[e])})},r.prototype.setOptions=function(t){b.extend(this.options,t)},r.prototype.update=function(){this._order(),this._stack()},r.prototype._order=function(){var t=this.parent.contents;if(!t)throw Error("Cannot stack items: parent does not contain items");var e=[],n=0;b.forEach(t,function(t){t.visible&&(e[n]=t,n++)});var i=this.options.order;if("function"!=typeof this.options.order)throw Error("Option order must be a function");e.sort(i),this.ordered=e},r.prototype._stack=function(){var t,e,n=this.ordered,i=this.options,o="top"==i.orientation,r=i.margin&&i.margin.item||0;for(t=0,e=n.length;e>t;t++){var s=n[t],a=null;do a=this.checkOverlap(n,t,0,t-1,r),null!=a&&(s.top=o?a.top+a.height+r:a.top-s.height-r);while(a)}},r.prototype.checkOverlap=function(t,e,n,i,o){for(var r=this.collision,s=t[e],a=i;a>=n;a--){var h=t[a];if(r(s,h,o)&&a!=e)return h}return null},r.prototype.collision=function(t,e,n){return t.left-n<e.left+e.width&&t.left+t.width+n>e.left&&t.top-n<e.top+e.height&&t.top+t.height+n>e.top},s.prototype.setOptions=function(t){b.extend(this.options,t),(null!=t.start||null!=t.end)&&this.setRange(t.start,t.end)},s.prototype.subscribe=function(t,e,n){var i,o=this;if("horizontal"!=n&&"vertical"!=n)throw new TypeError('Unknown direction "'+n+'". '+'Choose "horizontal" or "vertical".');if("move"==e)i={component:t,event:e,direction:n,callback:function(t){o._onMouseDown(t,i)},params:{}},t.on("mousedown",i.callback),o.listeners.push(i);else{if("zoom"!=e)throw new TypeError('Unknown event "'+e+'". '+'Choose "move" or "zoom".');i={component:t,event:e,direction:n,callback:function(t){o._onMouseWheel(t,i)},params:{}},t.on("mousewheel",i.callback),o.listeners.push(i)}},s.prototype.on=function(t,e){M.addListener(this,t,e)},s.prototype._trigger=function(t){M.trigger(this,t,{start:this.start,end:this.end})},s.prototype.setRange=function(t,e){var n=this._applyRange(t,e);n&&(this._trigger("rangechange"),this._trigger("rangechanged"))},s.prototype._applyRange=function(t,e){var n,i=null!=t?b.cast(t,"Number"):this.start,o=null!=e?b.cast(e,"Number"):this.end;if(isNaN(i))throw Error('Invalid start "'+t+'"');if(isNaN(o))throw Error('Invalid end "'+e+'"');if(i>o&&(o=i),null!=this.options.min){var r=this.options.min.valueOf();r>i&&(n=r-i,i+=n,o+=n)}if(null!=this.options.max){var s=this.options.max.valueOf();o>s&&(n=o-s,i-=n,o-=n)}if(null!=this.options.zoomMin){var a=this.options.zoomMin.valueOf();0>a&&(a=0),a>o-i&&(this.end-this.start>a?(n=a-(o-i),i-=n/2,o+=n/2):(i=this.start,o=this.end))}if(null!=this.options.zoomMax){var h=this.options.zoomMax.valueOf();0>h&&(h=0),o-i>h&&(h>this.end-this.start?(n=o-i-h,i+=n/2,o-=n/2):(i=this.start,o=this.end))}var p=this.start!=i||this.end!=o;return this.start=i,this.end=o,p},s.prototype.getRange=function(){return{start:this.start,end:this.end}},s.prototype.conversion=function(t){return this.start,this.end,s.conversion(this.start,this.end,t)},s.conversion=function(t,e,n){return 0!=n&&0!=e-t?{offset:t,factor:n/(e-t)}:{offset:0,factor:1}},s.prototype._onMouseDown=function(t,e){t=t||window.event;var n=e.params,i=t.which?1==t.which:1==t.button;if(i){n.mouseX=b.getPageX(t),n.mouseY=b.getPageY(t),n.previousLeft=0,n.previousOffset=0,n.moved=!1,n.start=this.start,n.end=this.end;var o=e.component.frame;o&&(o.style.cursor="move");var r=this;n.onMouseMove||(n.onMouseMove=function(t){r._onMouseMove(t,e)},b.addEventListener(document,"mousemove",n.onMouseMove)),n.onMouseUp||(n.onMouseUp=function(t){r._onMouseUp(t,e)},b.addEventListener(document,"mouseup",n.onMouseUp)),b.preventDefault(t)}},s.prototype._onMouseMove=function(t,e){t=t||window.event;var n=e.params,i=b.getPageX(t),o=b.getPageY(t);void 0==n.mouseX&&(n.mouseX=i),void 0==n.mouseY&&(n.mouseY=o);var r=i-n.mouseX,s=o-n.mouseY,a="horizontal"==e.direction?r:s;Math.abs(a)>=1&&(n.moved=!0);var h=n.end-n.start,p="horizontal"==e.direction?e.component.width:e.component.height,c=-a/p*h;this._applyRange(n.start+c,n.end+c),this._trigger("rangechange"),b.preventDefault(t)},s.prototype._onMouseUp=function(t,e){t=t||window.event;var n=e.params;e.component.frame&&(e.component.frame.style.cursor="auto"),n.onMouseMove&&(b.removeEventListener(document,"mousemove",n.onMouseMove),n.onMouseMove=null),n.onMouseUp&&(b.removeEventListener(document,"mouseup",n.onMouseUp),n.onMouseUp=null),n.moved&&this._trigger("rangechanged")
-},s.prototype._onMouseWheel=function(t,e){t=t||window.event;var n=0;if(t.wheelDelta?n=t.wheelDelta/120:t.detail&&(n=-t.detail/3),n){var i=this,o=function(){var o=n/5,r=null,s=e.component.frame;if(s){var a,h;if("horizontal"==e.direction){a=e.component.width,h=i.conversion(a);var p=b.getAbsoluteLeft(s),c=b.getPageX(t);r=(c-p)/h.factor+h.offset}else{a=e.component.height,h=i.conversion(a);var u=b.getAbsoluteTop(s),d=b.getPageY(t);r=(u+a-d-u)/h.factor+h.offset}}i.zoom(o,r)};o()}b.preventDefault(t)},s.prototype.zoom=function(t,e){null==e&&(e=(this.start+this.end)/2),t>=1&&(t=.9),-1>=t&&(t=-.9),0>t&&(t/=1+t);var n=this.start-e,i=this.end-e,o=this.start-n*t,r=this.end-i*t;this.setRange(o,r)},s.prototype.move=function(t){var e=this.end-this.start,n=this.start+e*t,i=this.end+e*t;this.start=n,this.end=i},a.prototype.on=function(t,e,n){var i=t instanceof RegExp?t:RegExp(t.replace("*","\\w+")),o={id:b.randomUUID(),event:t,regexp:i,callback:"function"==typeof e?e:null,target:n};return this.subscriptions.push(o),o.id},a.prototype.off=function(t){for(var e=0;this.subscriptions.length>e;){var n=this.subscriptions[e],i=!0;if(t instanceof Object)for(var o in t)t.hasOwnProperty(o)&&t[o]!==n[o]&&(i=!1);else i=n.id==t;i?this.subscriptions.splice(e,1):e++}},a.prototype.emit=function(t,e,n){for(var i=0;this.subscriptions.length>i;i++){var o=this.subscriptions[i];o.regexp.test(t)&&o.callback&&o.callback(t,e,n)}},h.prototype.add=function(t){if(void 0==t.id)throw Error("Component has no field id");if(!(t instanceof p||t instanceof h))throw new TypeError("Component must be an instance of prototype Component or Controller");t.controller=this,this.components[t.id]=t},h.prototype.remove=function(t){var e;for(e in this.components)if(this.components.hasOwnProperty(e)&&(e==t||this.components[e]==t))break;e&&delete this.components[e]},h.prototype.requestReflow=function(t){if(t)this.reflow();else if(!this.reflowTimer){var e=this;this.reflowTimer=setTimeout(function(){e.reflowTimer=void 0,e.reflow()},0)}},h.prototype.requestRepaint=function(t){if(t)this.repaint();else if(!this.repaintTimer){var e=this;this.repaintTimer=setTimeout(function(){e.repaintTimer=void 0,e.repaint()},0)}},h.prototype.repaint=function(){function t(i,o){o in n||(i.depends&&i.depends.forEach(function(e){t(e,e.id)}),i.parent&&t(i.parent,i.parent.id),e=i.repaint()||e,n[o]=!0)}var e=!1;this.repaintTimer&&(clearTimeout(this.repaintTimer),this.repaintTimer=void 0);var n={};b.forEach(this.components,t),e&&this.reflow()},h.prototype.reflow=function(){function t(i,o){o in n||(i.depends&&i.depends.forEach(function(e){t(e,e.id)}),i.parent&&t(i.parent,i.parent.id),e=i.reflow()||e,n[o]=!0)}var e=!1;this.reflowTimer&&(clearTimeout(this.reflowTimer),this.reflowTimer=void 0);var n={};b.forEach(this.components,t),e&&this.repaint()},p.prototype.setOptions=function(t){t&&(b.extend(this.options,t),this.controller&&(this.requestRepaint(),this.requestReflow()))},p.prototype.getContainer=function(){return null},p.prototype.getFrame=function(){return this.frame},p.prototype.repaint=function(){return!1},p.prototype.reflow=function(){return!1},p.prototype.hide=function(){return this.frame&&this.frame.parentNode?(this.frame.parentNode.removeChild(this.frame),!0):!1},p.prototype.show=function(){return this.frame&&this.frame.parentNode?!1:this.repaint()},p.prototype.requestRepaint=function(){if(!this.controller)throw Error("Cannot request a repaint: no controller configured");this.controller.requestRepaint()},p.prototype.requestReflow=function(){if(!this.controller)throw Error("Cannot request a reflow: no controller configured");this.controller.requestReflow()},c.prototype=new p,c.prototype.getContainer=function(){return this.frame},c.prototype.repaint=function(){var t=0,e=b.updateProperty,n=b.option.asSize,i=this.options,o=this.frame;if(o||(o=document.createElement("div"),o.className="panel",i.className&&("function"==typeof i.className?b.addClassName(o,i.className()+""):b.addClassName(o,i.className+"")),this.frame=o,t+=1),!o.parentNode){if(!this.parent)throw Error("Cannot repaint panel: no parent attached");var r=this.parent.getContainer();if(!r)throw Error("Cannot repaint panel: parent has no container element");r.appendChild(o),t+=1}return t+=e(o.style,"top",n(i.top,"0px")),t+=e(o.style,"left",n(i.left,"0px")),t+=e(o.style,"width",n(i.width,"100%")),t+=e(o.style,"height",n(i.height,"100%")),t>0},c.prototype.reflow=function(){var t=0,e=b.updateProperty,n=this.frame;return n?(t+=e(this,"top",n.offsetTop),t+=e(this,"left",n.offsetLeft),t+=e(this,"width",n.offsetWidth),t+=e(this,"height",n.offsetHeight)):t+=1,t>0},u.prototype=new c,u.prototype.setOptions=function(t){b.extend(this.options,t),this.options.autoResize?this._watch():this._unwatch()},u.prototype.repaint=function(){var t=0,e=b.updateProperty,n=b.option.asSize,i=this.options,o=this.frame;if(o||(o=document.createElement("div"),o.className="graph panel",i.className&&b.addClassName(o,b.option.asString(i.className)),this.frame=o,t+=1),!o.parentNode){if(!this.container)throw Error("Cannot repaint root panel: no container attached");this.container.appendChild(o),t+=1}return t+=e(o.style,"top",n(i.top,"0px")),t+=e(o.style,"left",n(i.left,"0px")),t+=e(o.style,"width",n(i.width,"100%")),t+=e(o.style,"height",n(i.height,"100%")),this._updateEventEmitters(),t>0},u.prototype.reflow=function(){var t=0,e=b.updateProperty,n=this.frame;return n?(t+=e(this,"top",n.offsetTop),t+=e(this,"left",n.offsetLeft),t+=e(this,"width",n.offsetWidth),t+=e(this,"height",n.offsetHeight)):t+=1,t>0},u.prototype._watch=function(){var t=this;this._unwatch();var e=function(){return t.options.autoResize?(t.frame&&(t.frame.clientWidth!=t.width||t.frame.clientHeight!=t.height)&&t.requestReflow(),void 0):(t._unwatch(),void 0)};b.addEventListener(window,"resize",e),this.watchTimer=setInterval(e,1e3)},u.prototype._unwatch=function(){this.watchTimer&&(clearInterval(this.watchTimer),this.watchTimer=void 0)},u.prototype.on=function(t,e){var n=this.listeners[t];n||(n=[],this.listeners[t]=n),n.push(e),this._updateEventEmitters()},u.prototype._updateEventEmitters=function(){if(this.listeners){var t=this;b.forEach(this.listeners,function(e,n){if(t.emitters||(t.emitters={}),!(n in t.emitters)){var i=t.frame;if(i){var o=function(t){e.forEach(function(e){e(t)})};t.emitters[n]=o,b.addEventListener(i,n,o)}}})}},d.prototype=new p,d.prototype.setOptions=function(t){b.extend(this.options,t)},d.prototype.setRange=function(t){if(!(t instanceof s||t&&t.start&&t.end))throw new TypeError("Range must be an instance of Range, or an object containing start and end.");this.range=t},d.prototype.toTime=function(t){var e=this.conversion;return new Date(t/e.factor+e.offset)},d.prototype.toScreen=function(t){var e=this.conversion;return(t.valueOf()-e.offset)*e.factor},d.prototype.repaint=function(){var t=0,e=b.updateProperty,n=b.option.asSize,i=this.options,o=this.props,r=this.step,s=this.frame;if(s||(s=document.createElement("div"),this.frame=s,t+=1),s.className="axis "+i.orientation,!s.parentNode){if(!this.parent)throw Error("Cannot repaint time axis: no parent attached");var a=this.parent.getContainer();if(!a)throw Error("Cannot repaint time axis: parent has no container element");a.appendChild(s),t+=1}var h=s.parentNode;if(h){var p=s.nextSibling;h.removeChild(s);var c=i.orientation,u="bottom"==c&&this.props.parentHeight&&this.height?this.props.parentHeight-this.height+"px":"0px";if(t+=e(s.style,"top",n(i.top,u)),t+=e(s.style,"left",n(i.left,"0px")),t+=e(s.style,"width",n(i.width,"100%")),t+=e(s.style,"height",n(i.height,this.height+"px")),this._repaintMeasureChars(),this.step){this._repaintStart(),r.first();for(var d=void 0,l=0;r.hasNext()&&1e3>l;){l++;var f=r.getCurrent(),m=this.toScreen(f),g=r.isMajor();i.showMinorLabels&&this._repaintMinorText(m,r.getLabelMinor()),g&&i.showMajorLabels?(m>0&&(void 0==d&&(d=m),this._repaintMajorText(m,r.getLabelMajor())),this._repaintMajorLine(m)):this._repaintMinorLine(m),r.next()}if(i.showMajorLabels){var v=this.toTime(0),y=r.getLabelMajor(v),w=y.length*(o.majorCharWidth||10)+10;(void 0==d||d>w)&&this._repaintMajorText(0,y)}this._repaintEnd()}this._repaintLine(),p?h.insertBefore(s,p):h.appendChild(s)}return t>0},d.prototype._repaintStart=function(){var t=this.dom,e=t.redundant;e.majorLines=t.majorLines,e.majorTexts=t.majorTexts,e.minorLines=t.minorLines,e.minorTexts=t.minorTexts,t.majorLines=[],t.majorTexts=[],t.minorLines=[],t.minorTexts=[]},d.prototype._repaintEnd=function(){b.forEach(this.dom.redundant,function(t){for(;t.length;){var e=t.pop();e&&e.parentNode&&e.parentNode.removeChild(e)}})},d.prototype._repaintMinorText=function(t,e){var n=this.dom.redundant.minorTexts.shift();if(!n){var i=document.createTextNode("");n=document.createElement("div"),n.appendChild(i),n.className="text minor",this.frame.appendChild(n)}this.dom.minorTexts.push(n),n.childNodes[0].nodeValue=e,n.style.left=t+"px",n.style.top=this.props.minorLabelTop+"px"},d.prototype._repaintMajorText=function(t,e){var n=this.dom.redundant.majorTexts.shift();if(!n){var i=document.createTextNode(e);n=document.createElement("div"),n.className="text major",n.appendChild(i),this.frame.appendChild(n)}this.dom.majorTexts.push(n),n.childNodes[0].nodeValue=e,n.style.top=this.props.majorLabelTop+"px",n.style.left=t+"px"},d.prototype._repaintMinorLine=function(t){var e=this.dom.redundant.minorLines.shift();e||(e=document.createElement("div"),e.className="grid vertical minor",this.frame.appendChild(e)),this.dom.minorLines.push(e);var n=this.props;e.style.top=n.minorLineTop+"px",e.style.height=n.minorLineHeight+"px",e.style.left=t-n.minorLineWidth/2+"px"},d.prototype._repaintMajorLine=function(t){var e=this.dom.redundant.majorLines.shift();e||(e=document.createElement("DIV"),e.className="grid vertical major",this.frame.appendChild(e)),this.dom.majorLines.push(e);var n=this.props;e.style.top=n.majorLineTop+"px",e.style.left=t-n.majorLineWidth/2+"px",e.style.height=n.majorLineHeight+"px"},d.prototype._repaintLine=function(){var t=this.dom.line,e=this.frame,n=this.options;n.showMinorLabels||n.showMajorLabels?(t?(e.removeChild(t),e.appendChild(t)):(t=document.createElement("div"),t.className="grid horizontal major",e.appendChild(t),this.dom.line=t),t.style.top=this.props.lineTop+"px"):t&&axis.parentElement&&(e.removeChild(axis.line),delete this.dom.line)},d.prototype._repaintMeasureChars=function(){var t,e=this.dom;if(!e.measureCharMinor){t=document.createTextNode("0");var n=document.createElement("DIV");n.className="text minor measure",n.appendChild(t),this.frame.appendChild(n),e.measureCharMinor=n}if(!e.measureCharMajor){t=document.createTextNode("0");var i=document.createElement("DIV");i.className="text major measure",i.appendChild(t),this.frame.appendChild(i),e.measureCharMajor=i}},d.prototype.reflow=function(){var t=0,e=b.updateProperty,n=this.frame,i=this.range;if(!i)throw Error("Cannot repaint time axis: no range configured");if(n){t+=e(this,"top",n.offsetTop),t+=e(this,"left",n.offsetLeft);var o=this.props,r=this.options.showMinorLabels,s=this.options.showMajorLabels,a=this.dom.measureCharMinor,h=this.dom.measureCharMajor;a&&(o.minorCharHeight=a.clientHeight,o.minorCharWidth=a.clientWidth),h&&(o.majorCharHeight=h.clientHeight,o.majorCharWidth=h.clientWidth);var p=n.parentNode?n.parentNode.offsetHeight:0;switch(p!=o.parentHeight&&(o.parentHeight=p,t+=1),this.options.orientation){case"bottom":o.minorLabelHeight=r?o.minorCharHeight:0,o.majorLabelHeight=s?o.majorCharHeight:0,o.minorLabelTop=0,o.majorLabelTop=o.minorLabelTop+o.minorLabelHeight,o.minorLineTop=-this.top,o.minorLineHeight=Math.max(this.top+o.majorLabelHeight,0),o.minorLineWidth=1,o.majorLineTop=-this.top,o.majorLineHeight=Math.max(this.top+o.minorLabelHeight+o.majorLabelHeight,0),o.majorLineWidth=1,o.lineTop=0;break;case"top":o.minorLabelHeight=r?o.minorCharHeight:0,o.majorLabelHeight=s?o.majorCharHeight:0,o.majorLabelTop=0,o.minorLabelTop=o.majorLabelTop+o.majorLabelHeight,o.minorLineTop=o.minorLabelTop,o.minorLineHeight=Math.max(p-o.majorLabelHeight-this.top),o.minorLineWidth=1,o.majorLineTop=0,o.majorLineHeight=Math.max(p-this.top),o.majorLineWidth=1,o.lineTop=o.majorLabelHeight+o.minorLabelHeight;break;default:throw Error('Unkown orientation "'+this.options.orientation+'"')}var c=o.minorLabelHeight+o.majorLabelHeight;t+=e(this,"width",n.offsetWidth),t+=e(this,"height",c),this._updateConversion();var u=b.cast(i.start,"Date"),d=b.cast(i.end,"Date"),l=this.toTime(5*(o.minorCharWidth||10))-this.toTime(0);this.step=new TimeStep(u,d,l),t+=e(o.range,"start",u.valueOf()),t+=e(o.range,"end",d.valueOf()),t+=e(o.range,"minimumStep",l.valueOf())}return t>0},d.prototype._updateConversion=function(){var t=this.range;if(!t)throw Error("No range configured");this.conversion=t.conversion?t.conversion(this.width):s.conversion(t.start,t.end,this.width)},l.prototype=new c,l.types={box:m,range:v,point:g},l.prototype.setOptions=function(t){b.extend(this.options,t),this.stack.setOptions(this.options)},l.prototype.setRange=function(t){if(!(t instanceof s||t&&t.start&&t.end))throw new TypeError("Range must be an instance of Range, or an object containing start and end.");this.range=t},l.prototype.repaint=function(){var t=0,e=b.updateProperty,n=b.option.asSize,i=this.options,o=this.frame;if(!o){o=document.createElement("div"),o.className="itemset",i.className&&b.addClassName(o,b.option.asString(i.className));var r=document.createElement("div");r.className="background",o.appendChild(r),this.dom.background=r;var s=document.createElement("div");s.className="foreground",o.appendChild(s),this.dom.foreground=s;var a=document.createElement("div");a.className="itemset-axis",this.dom.axis=a,this.frame=o,t+=1}if(!this.parent)throw Error("Cannot repaint itemset: no parent attached");var h=this.parent.getContainer();if(!h)throw Error("Cannot repaint itemset: parent has no container element");o.parentNode||(h.appendChild(o),t+=1),this.dom.axis.parentNode||(h.appendChild(this.dom.axis),t+=1),t+=e(o.style,"left",n(i.left,"0px")),t+=e(o.style,"top",n(i.top,"0px")),t+=e(o.style,"width",n(i.width,"100%")),t+=e(o.style,"height",n(i.height,this.height+"px")),t+=e(this.dom.axis.style,"left",n(i.left,"0px")),t+=e(this.dom.axis.style,"top",this.height+this.top+"px"),t+=e(this.dom.axis.style,"width",n(i.width,"100%")),this._updateConversion();var p=this,c=this.queue,u=this.items,d=this.contents,f={fields:["id","start","end","content","type"]};return Object.keys(c).forEach(function(e){var n=c[e],o=d[e];switch(n){case"add":case"update":var r=u.get(e,f),s=r.type||r.start&&r.end&&"range"||"box",a=l.types[s];if(o&&(a&&o instanceof a?(o.data=r,t++):(t+=o.hide(),o=null)),!o){if(!a)throw new TypeError('Unknown item type "'+s+'"');o=new a(p,r,i),t++}d[e]=o,delete c[e];break;case"remove":o&&(t+=o.hide()),delete d[e],delete c[e];break;default:console.log('Error: unknown action "'+n+'"')}}),b.forEach(this.contents,function(e){e.visible?(t+=e.show(),e.reposition()):t+=e.hide()}),t>0},l.prototype.getForeground=function(){return this.dom.foreground},l.prototype.getBackground=function(){return this.dom.background},l.prototype.getAxis=function(){return this.dom.axis},l.prototype.reflow=function(){var t=0,e=this.options,n=b.updateProperty,i=b.option.asNumber,o=this.frame;if(o){this._updateConversion(),b.forEach(this.contents,function(e){t+=e.reflow()}),this.stack.update();var r,s=i(e.maxHeight);if(null!=e.height)r=o.offsetHeight;else{var a=this.stack.ordered;if(a.length){var h=a[0].top,p=a[0].top+a[0].height;b.forEach(a,function(t){h=Math.min(h,t.top),p=Math.max(p,t.top+t.height)}),r=p-h+e.margin.axis+e.margin.item}else r=e.margin.axis+e.margin.item}null!=s&&(r=Math.min(r,s)),t+=n(this,"height",r),t+=n(this,"top",o.offsetTop),t+=n(this,"left",o.offsetLeft),t+=n(this,"width",o.offsetWidth)}else t+=1;return t>0},l.prototype.hide=function(){var t=!1;return this.frame&&this.frame.parentNode&&(this.frame.parentNode.removeChild(this.frame),t=!0),this.dom.axis&&this.dom.axis.parentNode&&(this.dom.axis.parentNode.removeChild(this.dom.axis),t=!0),t},l.prototype.setItems=function(t){var e,n,i=this,r=this.items;if(r&&(b.forEach(this.listeners,function(t,e){r.unsubscribe(e,t)}),e=r.get({fields:["id"]}),n=[],b.forEach(e,function(t,e){n[e]=t.id}),this._onRemove(n)),t){if(!(t instanceof o))throw new TypeError("Data must be an instance of DataSet");this.items=t}else this.items=null;if(this.items){var s=this.id;b.forEach(this.listeners,function(t,e){i.items.subscribe(e,t,s)}),e=this.items.get({fields:["id"]}),n=[],b.forEach(e,function(t,e){n[e]=t.id}),this._onAdd(n)}},l.prototype.getItems=function(){return this.items},l.prototype._onUpdate=function(t){this._toQueue(t,"update")},l.prototype._onAdd=function(t){this._toQueue(t,"add")},l.prototype._onRemove=function(t){this._toQueue(t,"remove")},l.prototype._toQueue=function(t,e){var n=this.queue;t.forEach(function(t){n[t]=e}),this.controller&&this.requestRepaint()},l.prototype._updateConversion=function(){var t=this.range;if(!t)throw Error("No range configured");this.conversion=t.conversion?t.conversion(this.width):s.conversion(t.start,t.end,this.width)},l.prototype.toTime=function(t){var e=this.conversion;return new Date(t/e.factor+e.offset)},l.prototype.toScreen=function(t){var e=this.conversion;return(t.valueOf()-e.offset)*e.factor},f.prototype.select=function(){this.selected=!0},f.prototype.unselect=function(){this.selected=!1},f.prototype.show=function(){return!1},f.prototype.hide=function(){return!1},f.prototype.repaint=function(){return!1},f.prototype.reflow=function(){return!1},m.prototype=new f(null,null),m.prototype.select=function(){this.selected=!0},m.prototype.unselect=function(){this.selected=!1},m.prototype.repaint=function(){var t=!1,e=this.dom;if(e||(this._create(),e=this.dom,t=!0),e){if(!this.options&&!this.parent)throw Error("Cannot repaint item: no parent attached");var n=this.parent.getForeground();if(!n)throw Error("Cannot repaint time axis: parent has no foreground container element");var i=this.parent.getBackground();if(!i)throw Error("Cannot repaint time axis: parent has no background container element");var o=this.parent.getAxis();if(!i)throw Error("Cannot repaint time axis: parent has no axis container element");if(e.box.parentNode||(n.appendChild(e.box),t=!0),e.line.parentNode||(i.appendChild(e.line),t=!0),e.dot.parentNode||(o.appendChild(e.dot),t=!0),this.data.content!=this.content){if(this.content=this.data.content,this.content instanceof Element)e.content.innerHTML="",e.content.appendChild(this.content);else{if(void 0==this.data.content)throw Error('Property "content" missing in item '+this.data.id);e.content.innerHTML=this.content}t=!0}var r=(this.data.className?" "+this.data.className:"")+(this.selected?" selected":"");this.className!=r&&(this.className=r,e.box.className="item box"+r,e.line.className="item line"+r,e.dot.className="item dot"+r,t=!0)}return t},m.prototype.show=function(){return this.dom&&this.dom.box.parentNode?!1:this.repaint()},m.prototype.hide=function(){var t=!1,e=this.dom;return e&&(e.box.parentNode&&(e.box.parentNode.removeChild(e.box),t=!0),e.line.parentNode&&e.line.parentNode.removeChild(e.line),e.dot.parentNode&&e.dot.parentNode.removeChild(e.dot)),t},m.prototype.reflow=function(){var t,e,n,i,o,r,s,a,h,p,c,u=0;if(void 0==this.data.start)throw Error('Property "start" missing in item '+this.data.id);if(p=this.data,c=this.parent&&this.parent.range,this.visible=p&&c?p.start>c.start&&p.start<c.end:!1,this.visible)if(e=this.dom)if(t=b.updateProperty,n=this.props,i=this.options,o=this.parent.toScreen(this.data.start),r=i&&i.align,s=i.orientation,u+=t(n.dot,"height",e.dot.offsetHeight),u+=t(n.dot,"width",e.dot.offsetWidth),u+=t(n.line,"width",e.line.offsetWidth),u+=t(n.line,"height",e.line.offsetHeight),u+=t(n.line,"top",e.line.offsetTop),u+=t(this,"width",e.box.offsetWidth),u+=t(this,"height",e.box.offsetHeight),h="right"==r?o-this.width:"left"==r?o:o-this.width/2,t(this,"left",h),t(n.line,"left",o-n.line.width/2),t(n.dot,"left",o-n.dot.width/2),t(n.dot,"top",-n.dot.height/2),"top"==s)a=i.margin.axis,t(this,"top",a);else{var d=this.parent.height;a=d-this.height-i.margin.axis,t(this,"top",a)}else u+=1;return u>0},m.prototype._create=function(){var t=this.dom;t||(this.dom=t={},t.box=document.createElement("DIV"),t.content=document.createElement("DIV"),t.content.className="content",t.box.appendChild(t.content),t.line=document.createElement("DIV"),t.line.className="line",t.dot=document.createElement("DIV"),t.dot.className="dot")},m.prototype.reposition=function(){var t=this.dom,e=this.props,n=this.options.orientation;if(t){var i=t.box,o=t.line,r=t.dot;i.style.left=this.left+"px",i.style.top=this.top+"px",o.style.left=e.line.left+"px","top"==n?(o.style.top="0px",o.style.height=this.top+"px"):(o.style.top=this.top+this.height+"px",o.style.height=Math.max(this.parent.height-this.top-this.height+this.props.dot.height/2,0)+"px"),r.style.left=e.dot.left+"px",r.style.top=e.dot.top+"px"}},g.prototype=new f(null,null),g.prototype.select=function(){this.selected=!0},g.prototype.unselect=function(){this.selected=!1},g.prototype.repaint=function(){var t=!1,e=this.dom;if(e||(this._create(),e=this.dom,t=!0),e){if(!this.options&&!this.options.parent)throw Error("Cannot repaint item: no parent attached");var n=this.parent.getForeground();if(!n)throw Error("Cannot repaint time axis: parent has no foreground container element");if(e.point.parentNode||(n.appendChild(e.point),n.appendChild(e.point),t=!0),this.data.content!=this.content){if(this.content=this.data.content,this.content instanceof Element)e.content.innerHTML="",e.content.appendChild(this.content);else{if(void 0==this.data.content)throw Error('Property "content" missing in item '+this.data.id);e.content.innerHTML=this.content}t=!0}var i=(this.data.className?" "+this.data.className:"")+(this.selected?" selected":"");this.className!=i&&(this.className=i,e.point.className="item point"+i,t=!0)}return t},g.prototype.show=function(){return this.dom&&this.dom.point.parentNode?!1:this.repaint()},g.prototype.hide=function(){var t=!1,e=this.dom;return e&&e.point.parentNode&&(e.point.parentNode.removeChild(e.point),t=!0),t},g.prototype.reflow=function(){var t,e,n,i,o,r,s,a,h,p=0;if(void 0==this.data.start)throw Error('Property "start" missing in item '+this.data.id);if(a=this.data,h=this.parent&&this.parent.range,this.visible=a&&h?a.start>h.start&&a.start<h.end:!1,this.visible)if(e=this.dom){if(t=b.updateProperty,n=this.props,i=this.options,o=i.orientation,r=this.parent.toScreen(this.data.start),p+=t(this,"width",e.point.offsetWidth),p+=t(this,"height",e.point.offsetHeight),p+=t(n.dot,"width",e.dot.offsetWidth),p+=t(n.dot,"height",e.dot.offsetHeight),p+=t(n.content,"height",e.content.offsetHeight),"top"==o)s=i.margin.axis;else{var c=this.parent.height;s=Math.max(c-this.height-i.margin.axis,0)}p+=t(this,"top",s),p+=t(this,"left",r-n.dot.width/2),p+=t(n.content,"marginLeft",1.5*n.dot.width),p+=t(n.dot,"top",(this.height-n.dot.height)/2)}else p+=1;return p>0},g.prototype._create=function(){var t=this.dom;t||(this.dom=t={},t.point=document.createElement("div"),t.content=document.createElement("div"),t.content.className="content",t.point.appendChild(t.content),t.dot=document.createElement("div"),t.dot.className="dot",t.point.appendChild(t.dot))},g.prototype.reposition=function(){var t=this.dom,e=this.props;t&&(t.point.style.top=this.top+"px",t.point.style.left=this.left+"px",t.content.style.marginLeft=e.content.marginLeft+"px",t.dot.style.top=e.dot.top+"px")},v.prototype=new f(null,null),v.prototype.select=function(){this.selected=!0},v.prototype.unselect=function(){this.selected=!1},v.prototype.repaint=function(){var t=!1,e=this.dom;if(e||(this._create(),e=this.dom,t=!0),e){if(!this.options&&!this.options.parent)throw Error("Cannot repaint item: no parent attached");var n=this.parent.getForeground();if(!n)throw Error("Cannot repaint time axis: parent has no foreground container element");if(e.box.parentNode||(n.appendChild(e.box),t=!0),this.data.content!=this.content){if(this.content=this.data.content,this.content instanceof Element)e.content.innerHTML="",e.content.appendChild(this.content);else{if(void 0==this.data.content)throw Error('Property "content" missing in item '+this.data.id);e.content.innerHTML=this.content}t=!0}var i=this.data.className?""+this.data.className:"";this.className!=i&&(this.className=i,e.box.className="item range"+i,t=!0)}return t},v.prototype.show=function(){return this.dom&&this.dom.box.parentNode?!1:this.repaint()},v.prototype.hide=function(){var t=!1,e=this.dom;return e&&e.box.parentNode&&(e.box.parentNode.removeChild(e.box),t=!0),t},v.prototype.reflow=function(){var t,e,n,i,o,r,s,a,h,p,c,u,d,l,f=0;if(void 0==this.data.start)throw Error('Property "start" missing in item '+this.data.id);if(void 0==this.data.end)throw Error('Property "end" missing in item '+this.data.id);return s=this.data,a=this.parent&&this.parent.range,this.visible=s&&a?s.start<a.end&&s.end>a.start:!1,this.visible&&(t=this.dom,t?(e=this.props,n=this.options,i=this.parent,o=i.toScreen(this.data.start),r=i.toScreen(this.data.end),h=b.updateProperty,p=t.box,c=i.width,d=n.orientation,f+=h(e.content,"width",t.content.offsetWidth),f+=h(this,"height",p.offsetHeight),-c>o&&(o=-c),r>2*c&&(r=2*c),u=0>o?Math.min(-o,r-o-e.content.width-2*n.padding):0,f+=h(e.content,"left",u),"top"==d?(l=n.margin.axis,f+=h(this,"top",l)):(l=i.height-this.height-n.margin.axis,f+=h(this,"top",l)),f+=h(this,"left",o),f+=h(this,"width",Math.max(r-o,1))):f+=1),f>0},v.prototype._create=function(){var t=this.dom;t||(this.dom=t={},t.box=document.createElement("div"),t.content=document.createElement("div"),t.content.className="content",t.box.appendChild(t.content))},v.prototype.reposition=function(){var t=this.dom,e=this.props;t&&(t.box.style.top=this.top+"px",t.box.style.left=this.left+"px",t.box.style.width=this.width+"px",t.content.style.left=e.content.left+"px")},y.prototype=new c,y.prototype.setOptions=function(t){b.extend(this.options,t);var e=this;b.forEach(this.contents,function(t){t.itemset.setOptions(e.options)})},y.prototype.setRange=function(){},y.prototype.setItems=function(t){this.items=t,b.forEach(this.contents,function(e){e.itemset.setItems(t)})},y.prototype.getItems=function(){return this.items},y.prototype.setRange=function(t){this.range=t},y.prototype.setGroups=function(t){var e,n,i=this;if(this.groups&&(b.forEach(this.listeners,function(t,e){i.groups.unsubscribe(e,t)}),e=this.groups.get({fields:["id"]}),n=[],b.forEach(e,function(t,e){n[e]=t.id}),this._onRemove(n)),t?t instanceof o?this.groups=t:(this.groups=new o({fieldTypes:{start:"Date",end:"Date"}}),this.groups.add(t)):this.groups=null,this.groups){var r=this.id;b.forEach(this.listeners,function(t,e){i.groups.subscribe(e,t,r)}),e=this.groups.get({fields:["id"]}),n=[],b.forEach(e,function(t,e){n[e]=t.id}),this._onAdd(n)}},y.prototype.getGroups=function(){return this.groups},y.prototype.repaint=function(){var t=0,e=b.updateProperty,n=b.option.asSize,i=this.options,o=this.frame;if(o||(o=document.createElement("div"),o.className="groupset",i.className&&b.addClassName(o,b.option.asString(i.className)),this.frame=o,t+=1),!this.parent)throw Error("Cannot repaint groupset: no parent attached");var r=this.parent.getContainer();if(!r)throw Error("Cannot repaint groupset: parent has no container 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n=this.queue;t.forEach(function(t){n[t]=e}),this.controller&&this.requestRepaint()},w.prototype.setOptions=function(t){b.extend(this.options,t),this.timeaxis.setOptions({orientation:this.options.orientation,showMinorLabels:this.options.showMinorLabels,showMajorLabels:this.options.showMajorLabels}),this.range.setOptions({min:this.options.min,max:this.options.max,zoomMin:this.options.zoomMin,zoomMax:this.options.zoomMax});var e,n,i,o,r=this;if(e="top"==this.options.orientation?function(){return r.timeaxis.height}:function(){return r.main.height-r.timeaxis.height-r.content.height},this.options.height?(i=this.options.height,n=function(){return r.main.height-r.timeaxis.height}):(i=function(){return r.timeaxis.height+r.content.height},n=null),this.options.maxHeight){if(!b.isNumber(this.options.maxHeight))throw new TypeError("Number expected for property maxHeight");o=function(){return r.options.maxHeight-r.timeaxis.height}}this.main.setOptions({height:i}),this.content.setOptions({orientation:this.options.orientation,top:e,height:n,maxHeight:o}),this.controller.repaint()},w.prototype.setItems=function(t){var e,n=null==this.items;if(t?t instanceof o&&(e=t):e=null,t instanceof o||(e=new o({fieldTypes:{start:"Date",end:"Date"}}),e.add(t)),this.items=e,this.content.setItems(e),n&&(void 0==this.options.start||void 0==this.options.end)){var i=this.getItemRange(),r=i.min,s=i.max;if(null!=r&&null!=s){var a=s.valueOf()-r.valueOf();r=new Date(r.valueOf()-.05*a),s=new Date(s.valueOf()+.05*a)}void 0!=this.options.start&&(r=new Date(this.options.start.valueOf())),void 0!=this.options.end&&(s=new Date(this.options.end.valueOf())),(null!=r||null!=s)&&this.range.setRange(r,s)}},w.prototype.setGroups=function(t){this.groups=t;var e=this.groups?y:l;this.content instanceof e||(this.content&&(this.content.hide(),this.content.setItems&&this.content.setItems(),this.content.setGroups&&this.content.setGroups(),this.controller.remove(this.content)),this.content=new e(this.main,[this.timeaxis]),this.content.setRange&&this.content.setRange(this.range),this.content.setItems&&this.content.setItems(this.items),this.content.setGroups&&this.content.setGroups(this.groups),this.controller.add(this.content),this.setOptions(this.options))},w.prototype.getItemRange=function(){var t=this.items,e=null,n=null;if(t){var i=t.min("start");e=i?i.start.valueOf():null;var o=t.max("start");o&&(n=o.start.valueOf());var r=t.max("end");r&&(n=null==n?r.end.valueOf():Math.max(n,r.end.valueOf()))}return{min:null!=e?new Date(e):null,max:null!=n?new Date(n):null}};var _={util:b,events:M,Controller:h,DataSet:o,Range:s,Stack:r,TimeStep:TimeStep,EventBus:a,components:{items:{Item:f,ItemBox:m,ItemPoint:g,ItemRange:v},Component:p,Panel:c,RootPanel:u,ItemSet:l,TimeAxis:d},Timeline:w};
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_={listeners:[],indexOf:function(t){for(var e=this.listeners,n=0,i=this.listeners.length;i>n;n++){var o=e[n];if(o&&o.object==t)return n}return-1},addListener:function(t,e,n){var i=this.indexOf(t),o=this.listeners[i];o||(o={object:t,events:{}},this.listeners.push(o));var r=o.events[e];r||(r=[],o.events[e]=r),-1==r.indexOf(n)&&r.push(n)},removeListener:function(t,e,n){var i=this.indexOf(t),o=this.listeners[i];if(o){var r=o.events[e];r&&(i=r.indexOf(n),-1!=i&&r.splice(i,1),0==r.length&&delete o.events[e]);var s=0,a=o.events;for(var h in a)a.hasOwnProperty(h)&&s++;0==s&&delete this.listeners[i]}},removeAllListeners:function(){this.listeners=[]},trigger:function(t,e,n){var i=this.indexOf(t),o=this.listeners[i];if(o){var r=o.events[e];if(r)for(var s=0,a=r.length;a>s;s++)r[s](n)}}};TimeStep=function(t,e,n){this.current=new Date,this._start=new Date,this._end=new Date,this.autoScale=!0,this.scale=TimeStep.SCALE.DAY,this.step=1,this.setRange(t,e,n)},TimeStep.SCALE={MILLISECOND:1,SECOND:2,MINUTE:3,HOUR:4,DAY:5,WEEKDAY:6,MONTH:7,YEAR:8},TimeStep.prototype.setRange=function(t,e,n){t instanceof Date&&e instanceof Date&&(this._start=void 0!=t?new Date(t.valueOf()):new Date,this._end=void 0!=e?new Date(e.valueOf()):new Date,this.autoScale&&this.setMinimumStep(n))},TimeStep.prototype.first=function(){this.current=new Date(this._start.valueOf()),this.roundToMinor()},TimeStep.prototype.roundToMinor=function(){switch(this.scale){case TimeStep.SCALE.YEAR:this.current.setFullYear(this.step*Math.floor(this.current.getFullYear()/this.step)),this.current.setMonth(0);case TimeStep.SCALE.MONTH:this.current.setDate(1);case TimeStep.SCALE.DAY:case TimeStep.SCALE.WEEKDAY:this.current.setHours(0);case TimeStep.SCALE.HOUR:this.current.setMinutes(0);case TimeStep.SCALE.MINUTE:this.current.setSeconds(0);case TimeStep.SCALE.SECOND:this.current.setMilliseconds(0)}if(1!=this.step)switch(this.scale){case TimeStep.SCALE.MILLISECOND:this.current.setMilliseconds(this.current.getMilliseconds()-this.current.getMilliseconds()%this.step);break;case TimeStep.SCALE.SECOND:this.current.setSeconds(this.current.getSeconds()-this.current.getSeconds()%this.step);break;case TimeStep.SCALE.MINUTE:this.current.setMinutes(this.current.getMinutes()-this.current.getMinutes()%this.step);break;case TimeStep.SCALE.HOUR:this.current.setHours(this.current.getHours()-this.current.getHours()%this.step);break;case TimeStep.SCALE.WEEKDAY:case TimeStep.SCALE.DAY:this.current.setDate(this.current.getDate()-1-(this.current.getDate()-1)%this.step+1);break;case TimeStep.SCALE.MONTH:this.current.setMonth(this.current.getMonth()-this.current.getMonth()%this.step);break;case TimeStep.SCALE.YEAR:this.current.setFullYear(this.current.getFullYear()-this.current.getFullYear()%this.step);break;default:}},TimeStep.prototype.hasNext=function(){return this.current.valueOf()<=this._end.valueOf()},TimeStep.prototype.next=function(){var t=this.current.valueOf();if(6>this.current.getMonth())switch(this.scale){case TimeStep.SCALE.MILLISECOND:this.current=new Date(this.current.valueOf()+this.step);break;case TimeStep.SCALE.SECOND:this.current=new Date(this.current.valueOf()+1e3*this.step);break;case TimeStep.SCALE.MINUTE:this.current=new Date(this.current.valueOf()+60*1e3*this.step);break;case TimeStep.SCALE.HOUR:this.current=new Date(this.current.valueOf()+60*60*1e3*this.step);var e=this.current.getHours();this.current.setHours(e-e%this.step);break;case TimeStep.SCALE.WEEKDAY:case TimeStep.SCALE.DAY:this.current.setDate(this.current.getDate()+this.step);break;case TimeStep.SCALE.MONTH:this.current.setMonth(this.current.getMonth()+this.step);break;case TimeStep.SCALE.YEAR:this.current.setFullYear(this.current.getFullYear()+this.step);break;default:}else switch(this.scale){case TimeStep.SCALE.MILLISECOND:this.current=new Date(this.current.valueOf()+this.step);break;case TimeStep.SCALE.SECOND:this.current.setSeconds(this.current.getSeconds()+this.step);break;case TimeStep.SCALE.MINUTE:this.current.setMinutes(this.current.getMinutes()+this.step);break;case TimeStep.SCALE.HOUR:this.current.setHours(this.current.getHours()+this.step);break;case TimeStep.SCALE.WEEKDAY:case TimeStep.SCALE.DAY:this.current.setDate(this.current.getDate()+this.step);break;case TimeStep.SCALE.MONTH:this.current.setMonth(this.current.getMonth()+this.step);break;case TimeStep.SCALE.YEAR:this.current.setFullYear(this.current.getFullYear()+this.step);break;default:}if(1!=this.step)switch(this.scale){case TimeStep.SCALE.MILLISECOND:this.current.getMilliseconds()<this.step&&this.current.setMilliseconds(0);break;case TimeStep.SCALE.SECOND:this.current.getSeconds()<this.step&&this.current.setSeconds(0);break;case TimeStep.SCALE.MINUTE:this.current.getMinutes()<this.step&&this.current.setMinutes(0);break;case TimeStep.SCALE.HOUR:this.current.getHours()<this.step&&this.current.setHours(0);break;case TimeStep.SCALE.WEEKDAY:case TimeStep.SCALE.DAY:this.current.getDate()<this.step+1&&this.current.setDate(1);break;case TimeStep.SCALE.MONTH:this.current.getMonth()<this.step&&this.current.setMonth(0);break;case TimeStep.SCALE.YEAR:break;default:}this.current.valueOf()==t&&(this.current=new Date(this._end.valueOf()))},TimeStep.prototype.getCurrent=function(){return this.current},TimeStep.prototype.setScale=function(t,e){this.scale=t,e>0&&(this.step=e),this.autoScale=!1},TimeStep.prototype.setAutoScale=function(t){this.autoScale=t},TimeStep.prototype.setMinimumStep=function(t){if(void 0!=t){var e=31104e6,n=2592e6,i=864e5,o=36e5,r=6e4,s=1e3,a=1;1e3*e>t&&(this.scale=TimeStep.SCALE.YEAR,this.step=1e3),500*e>t&&(this.scale=TimeStep.SCALE.YEAR,this.step=500),100*e>t&&(this.scale=TimeStep.SCALE.YEAR,this.step=100),50*e>t&&(this.scale=TimeStep.SCALE.YEAR,this.step=50),10*e>t&&(this.scale=TimeStep.SCALE.YEAR,this.step=10),5*e>t&&(this.scale=TimeStep.SCALE.YEAR,this.step=5),e>t&&(this.scale=TimeStep.SCALE.YEAR,this.step=1),3*n>t&&(this.scale=TimeStep.SCALE.MONTH,this.step=3),n>t&&(this.scale=TimeStep.SCALE.MONTH,this.step=1),5*i>t&&(this.scale=TimeStep.SCALE.DAY,this.step=5),2*i>t&&(this.scale=TimeStep.SCALE.DAY,this.step=2),i>t&&(this.scale=TimeStep.SCALE.DAY,this.step=1),i/2>t&&(this.scale=TimeStep.SCALE.WEEKDAY,this.step=1),4*o>t&&(this.scale=TimeStep.SCALE.HOUR,this.step=4),o>t&&(this.scale=TimeStep.SCALE.HOUR,this.step=1),15*r>t&&(this.scale=TimeStep.SCALE.MINUTE,this.step=15),10*r>t&&(this.scale=TimeStep.SCALE.MINUTE,this.step=10),5*r>t&&(this.scale=TimeStep.SCALE.MINUTE,this.step=5),r>t&&(this.scale=TimeStep.SCALE.MINUTE,this.step=1),15*s>t&&(this.scale=TimeStep.SCALE.SECOND,this.step=15),10*s>t&&(this.scale=TimeStep.SCALE.SECOND,this.step=10),5*s>t&&(this.scale=TimeStep.SCALE.SECOND,this.step=5),s>t&&(this.scale=TimeStep.SCALE.SECOND,this.step=1),200*a>t&&(this.scale=TimeStep.SCALE.MILLISECOND,this.step=200),100*a>t&&(this.scale=TimeStep.SCALE.MILLISECOND,this.step=100),50*a>t&&(this.scale=TimeStep.SCALE.MILLISECOND,this.step=50),10*a>t&&(this.scale=TimeStep.SCALE.MILLISECOND,this.step=10),5*a>t&&(this.scale=TimeStep.SCALE.MILLISECOND,this.step=5),a>t&&(this.scale=TimeStep.SCALE.MILLISECOND,this.step=1)}},TimeStep.prototype.snap=function(t){if(this.scale==TimeStep.SCALE.YEAR){var e=t.getFullYear()+Math.round(t.getMonth()/12);t.setFullYear(Math.round(e/this.step)*this.step),t.setMonth(0),t.setDate(0),t.setHours(0),t.setMinutes(0),t.setSeconds(0),t.setMilliseconds(0)}else if(this.scale==TimeStep.SCALE.MONTH)t.getDate()>15?(t.setDate(1),t.setMonth(t.getMonth()+1)):t.setDate(1),t.setHours(0),t.setMinutes(0),t.setSeconds(0),t.setMilliseconds(0);else if(this.scale==TimeStep.SCALE.DAY||this.scale==TimeStep.SCALE.WEEKDAY){switch(this.step){case 5:case 2:t.setHours(24*Math.round(t.getHours()/24));break;default:t.setHours(12*Math.round(t.getHours()/12))}t.setMinutes(0),t.setSeconds(0),t.setMilliseconds(0)}else if(this.scale==TimeStep.SCALE.HOUR){switch(this.step){case 4:t.setMinutes(60*Math.round(t.getMinutes()/60));break;default:t.setMinutes(30*Math.round(t.getMinutes()/30))}t.setSeconds(0),t.setMilliseconds(0)}else if(this.scale==TimeStep.SCALE.MINUTE){switch(this.step){case 15:case 10:t.setMinutes(5*Math.round(t.getMinutes()/5)),t.setSeconds(0);break;case 5:t.setSeconds(60*Math.round(t.getSeconds()/60));break;default:t.setSeconds(30*Math.round(t.getSeconds()/30))}t.setMilliseconds(0)}else if(this.scale==TimeStep.SCALE.SECOND)switch(this.step){case 15:case 10:t.setSeconds(5*Math.round(t.getSeconds()/5)),t.setMilliseconds(0);break;case 5:t.setMilliseconds(1e3*Math.round(t.getMilliseconds()/1e3));break;default:t.setMilliseconds(500*Math.round(t.getMilliseconds()/500))}else if(this.scale==TimeStep.SCALE.MILLISECOND){var n=this.step>5?this.step/2:1;t.setMilliseconds(Math.round(t.getMilliseconds()/n)*n)}},TimeStep.prototype.isMajor=function(){switch(this.scale){case TimeStep.SCALE.MILLISECOND:return 0==this.current.getMilliseconds();case TimeStep.SCALE.SECOND:return 0==this.current.getSeconds();case TimeStep.SCALE.MINUTE:return 0==this.current.getHours()&&0==this.current.getMinutes();case TimeStep.SCALE.HOUR:return 0==this.current.getHours();case TimeStep.SCALE.WEEKDAY:case TimeStep.SCALE.DAY:return 1==this.current.getDate();case TimeStep.SCALE.MONTH:return 0==this.current.getMonth();case TimeStep.SCALE.YEAR:return!1;default:return!1}},TimeStep.prototype.getLabelMinor=function(t){switch(void 0==t&&(t=this.current),this.scale){case TimeStep.SCALE.MILLISECOND:return S(t).format("SSS");case TimeStep.SCALE.SECOND:return S(t).format("s");case TimeStep.SCALE.MINUTE:return S(t).format("HH:mm");case TimeStep.SCALE.HOUR:return S(t).format("HH:mm");case TimeStep.SCALE.WEEKDAY:return S(t).format("ddd D");case TimeStep.SCALE.DAY:return S(t).format("D");case TimeStep.SCALE.MONTH:return S(t).format("MMM");case TimeStep.SCALE.YEAR:return S(t).format("YYYY");default:return""}},TimeStep.prototype.getLabelMajor=function(t){switch(void 0==t&&(t=this.current),this.scale){case TimeStep.SCALE.MILLISECOND:return S(t).format("HH:mm:ss");case TimeStep.SCALE.SECOND:return S(t).format("D MMMM HH:mm");case TimeStep.SCALE.MINUTE:case TimeStep.SCALE.HOUR:return S(t).format("ddd D MMMM");case TimeStep.SCALE.WEEKDAY:case TimeStep.SCALE.DAY:return S(t).format("MMMM YYYY");case TimeStep.SCALE.MONTH:return S(t).format("YYYY");case TimeStep.SCALE.YEAR:return"";default:return""}},o.prototype.subscribe=function(t,e,n){var i=this.subscribers[t];i||(i=[],this.subscribers[t]=i),i.push({id:n?n+"":null,callback:e})},o.prototype.unsubscribe=function(t,e){var n=this.subscribers[t];n&&(this.subscribers[t]=n.filter(function(t){return t.callback!=e}))},o.prototype._trigger=function(t,e,n){if("*"==t)throw Error("Cannot trigger event *");var i=[];t in this.subscribers&&(i=i.concat(this.subscribers[t])),"*"in this.subscribers&&(i=i.concat(this.subscribers["*"])),i.forEach(function(i){i.callback&&i.callback(t,e,n||null)})},o.prototype.add=function(t,e){var n,i=[],o=this;if(t instanceof Array)t.forEach(function(t){var e=o._addItem(t);i.push(e)});else if(E.isDataTable(t))for(var r=this._getColumnNames(t),s=0,a=t.getNumberOfRows();a>s;s++){var h={};r.forEach(function(e,n){h[e]=t.getValue(s,n)}),n=o._addItem(h),i.push(n)}else{if(!(t instanceof Object))throw Error("Unknown dataType");n=o._addItem(t),i.push(n)}i.length&&this._trigger("add",{items:i},e)},o.prototype.update=function(t,e){var n=[],i=[],o=this,r=o.fieldId,s=function(t){var e=t[r];o.data[e]?(e=o._updateItem(t),i.push(e)):(e=o._addItem(t),n.push(e))};if(t instanceof Array)t.forEach(function(t){s(t)});else if(E.isDataTable(t))for(var a=this._getColumnNames(t),h=0,p=t.getNumberOfRows();p>h;h++){var u={};a.forEach(function(e,n){u[e]=t.getValue(h,n)}),s(u)}else{if(!(t instanceof Object))throw Error("Unknown dataType");s(t)}n.length&&this._trigger("add",{items:n},e),i.length&&this._trigger("update",{items:i},e)},o.prototype.get=function(){var t,e,n,i,o=this,r=E.getType(arguments[0]);"String"==r||"Number"==r?(t=arguments[0],n=arguments[1],i=arguments[2]):"Array"==r?(e=arguments[0],n=arguments[1],i=arguments[2]):(n=arguments[0],i=arguments[1]);var s;if(n&&n.type){if(s="DataTable"==n.type?"DataTable":"Array",i&&s!=E.getType(i))throw Error('Type of parameter "data" ('+E.getType(i)+") "+"does not correspond with specified options.type ("+n.type+")");if("DataTable"==s&&!E.isDataTable(i))throw Error('Parameter "data" must be a DataTable when options.type is "DataTable"')}else s=i?"DataTable"==E.getType(i)?"DataTable":"Array":"Array";var a=this._mergeFieldTypes(n&&n.fieldTypes),h=n&&n.fields,p=n&&n.filter;if("DataTable"==s){var u=this._getColumnNames(i);if(void 0!=t){var c=o._castItem(o.data[t],a,h);this._appendRow(i,u,c)}else void 0!=e?e.forEach(function(t){var e=o._castItem(o.data[t],a,h);(!e||p(e))&&o._appendRow(i,u,e)}):E.forEach(this.data,function(t){var e=o._castItem(t);(!e||p(e))&&o._appendRow(i,u,e)})}else{if(i||(i=[]),void 0!=t)return this._castItem(o.data[t],a,h);void 0!=e?e.forEach(function(t){var e=o._castItem(o.data[t],a,h);(!p||p(e))&&i.push(e)}):E.forEach(this.data,function(t){var e=o._castItem(t,a,h);(!p||p(e))&&i.push(e)})}return i},o.prototype.forEach=function(t,e){var n=this._mergeFieldTypes(e&&e.fieldTypes),i=e&&e.fields,o=e&&e.filter,r=this;E.forEach(this.data,function(e,s){var a=r._castItem(e,n,i);(!o||o(a))&&t(a,s)})},o.prototype.map=function(t,e){var n=this._mergeFieldTypes(e&&e.fieldTypes),i=e&&e.fields,o=e&&e.filter,r=this,s=[];return E.forEach(this.data,function(e,a){var h=r._castItem(e,n,i);if(!o||o(h)){var p=t(h,a);s.push(p)}}),s},o.prototype._mergeFieldTypes=function(t){var e={};return this.options&&this.options.fieldTypes&&E.forEach(this.options.fieldTypes,function(t,n){e[n]=t}),t&&E.forEach(t,function(t,n){e[n]=t}),e},o.prototype.remove=function(t,e){var n=[],i=this;if(E.isNumber(t)||E.isString(t))delete this.data[t],delete this.internalIds[t],n.push(t);else if(t instanceof Array)t.forEach(function(t){i.remove(t)}),n=items.concat(t);else if(t instanceof Object)for(var o in this.data)this.data.hasOwnProperty(o)&&this.data[o]==t&&(delete this.data[o],delete this.internalIds[o],n.push(o));n.length&&this._trigger("remove",{items:n},e)},o.prototype.clear=function(t){var e=Object.keys(this.data);this.data={},this.internalIds={},this._trigger("remove",{items:e},t)},o.prototype.max=function(t){var e=this.data,n=Object.keys(e),i=null,o=null;return n.forEach(function(n){var r=e[n],s=r[t];null!=s&&(!i||s>o)&&(i=r,o=s)}),i},o.prototype.min=function(t){var e=this.data,n=Object.keys(e),i=null,o=null;return n.forEach(function(n){var r=e[n],s=r[t];null!=s&&(!i||o>s)&&(i=r,o=s)}),i},o.prototype.distinct=function(t){var e=this.data,n=[],i=this.options.fieldTypes[t],o=0;for(var r in e)if(e.hasOwnProperty(r)){for(var s=e[r],a=E.cast(s[t],i),h=!1,p=0;o>p;p++)if(n[p]==a){h=!0;break}h||(n[o]=a,o++)}return n},o.prototype._addItem=function(t){var e=t[this.fieldId];if(void 0!=e){if(this.data[e])throw Error("Cannot add item: item with id "+e+" already exists")}else e=E.randomUUID(),t[this.fieldId]=e,this.internalIds[e]=t;var n={};for(var i in t)if(t.hasOwnProperty(i)){var o=this.fieldTypes[i];n[i]=E.cast(t[i],o)}return this.data[e]=n,e},o.prototype._castItem=function(t,e,n){var i,o=this.fieldId,r=this.internalIds;return t?(i={},e=e||{},n?E.forEach(t,function(t,o){-1!=n.indexOf(o)&&(i[o]=E.cast(t,e[o]))}):E.forEach(t,function(t,n){n==o&&t in r||(i[n]=E.cast(t,e[n]))})):i=null,i},o.prototype._updateItem=function(t){var e=t[this.fieldId];if(void 0==e)throw Error("Cannot update item: item has no id (item: "+JSON.stringify(t)+")");var n=this.data[e];if(!n)throw Error("Cannot update item: no item with id "+e+" found");for(var i in t)if(t.hasOwnProperty(i)){var o=this.fieldTypes[i];n[i]=E.cast(t[i],o)}return e},o.prototype._getColumnNames=function(t){for(var e=[],n=0,i=t.getNumberOfColumns();i>n;n++)e[n]=t.getColumnId(n)||t.getColumnLabel(n);return e},o.prototype._appendRow=function(t,e,n){var i=t.addRow();e.forEach(function(e,o){t.setValue(i,o,n[e])})},r.prototype.setData=function(t){this.data&&this.data.unsubscribe&&this.data.unsubscribe("*",this.listener),this.data=t,this.data&&this.data.subscribe&&this.data.subscribe("*",this.listener)},r.prototype.get=function(){var t,e,n,i=this,o=E.getType(arguments[0]);"String"==o||"Number"==o||"Array"==o?(t=arguments[0],e=arguments[1],n=arguments[2]):(e=arguments[0],n=arguments[1]);var r=E.extend({},this.options,e);this.options.filter&&e&&e.filter&&(r.filter=function(t){return i.options.filter(t)&&e.filter(t)});var s=[];return void 0!=t&&s.push(t),s.push(r),s.push(n),this.data.get.apply(this.data,s)},r.prototype._onEvent=function(t,e,n){var i=e&&e.items,o=this.data,r=(this.options.fieldId||this.data&&this.data.options&&this.data.options.fieldId||"id",this.options.filter),s=[];i&&o&&r&&(s=o.get(i,{filter:r}).map(function(t){return t.id}),s.length&&this._trigger(t,{items:s},n))},r.prototype.subscribe=o.prototype.subscribe,r.prototype.unsubscribe=o.prototype.unsubscribe,r.prototype._trigger=o.prototype._trigger,s.prototype.setOptions=function(t){E.extend(this.options,t)},s.prototype.update=function(){this._order(),this._stack()},s.prototype._order=function(){var t=this.parent.contents;if(!t)throw Error("Cannot stack items: parent does not contain items");var e=[],n=0;E.forEach(t,function(t){t.visible&&(e[n]=t,n++)});var i=this.options.order;if("function"!=typeof this.options.order)throw Error("Option order must be a function");e.sort(i),this.ordered=e},s.prototype._stack=function(){var t,e,n=this.ordered,i=this.options,o="top"==i.orientation,r=i.margin&&i.margin.item||0;for(t=0,e=n.length;e>t;t++){var s=n[t],a=null;do a=this.checkOverlap(n,t,0,t-1,r),null!=a&&(s.top=o?a.top+a.height+r:a.top-s.height-r);while(a)}},s.prototype.checkOverlap=function(t,e,n,i,o){for(var r=this.collision,s=t[e],a=i;a>=n;a--){var h=t[a];if(r(s,h,o)&&a!=e)return h}return null},s.prototype.collision=function(t,e,n){return t.left-n<e.left+e.width&&t.left+t.width+n>e.left&&t.top-n<e.top+e.height&&t.top+t.height+n>e.top},a.prototype.setOptions=function(t){E.extend(this.options,t),(null!=t.start||null!=t.end)&&this.setRange(t.start,t.end)},a.prototype.subscribe=function(t,e,n){var i,o=this;if("horizontal"!=n&&"vertical"!=n)throw new TypeError('Unknown direction "'+n+'". '+'Choose "horizontal" or "vertical".');if("move"==e)i={component:t,event:e,direction:n,callback:function(t){o._onMouseDown(t,i)},params:{}},t.on("mousedown",i.callback),o.listeners.push(i);else{if("zoom"!=e)throw new TypeError('Unknown event "'+e+'". '+'Choose "move" or "zoom".');i={component:t,event:e,direction:n,callback:function(t){o._onMouseWheel(t,i)},params:{}},t.on("mousewheel",i.callback),o.listeners.push(i)}},a.prototype.on=function(t,e){_.addListener(this,t,e)},a.prototype._trigger=function(t){_.trigger(this,t,{start:this.start,end:this.end})},a.prototype.setRange=function(t,e){var n=this._applyRange(t,e);n&&(this._trigger("rangechange"),this._trigger("rangechanged"))},a.prototype._applyRange=function(t,e){var n,i=null!=t?E.cast(t,"Number"):this.start,o=null!=e?E.cast(e,"Number"):this.end;if(isNaN(i))throw Error('Invalid start "'+t+'"');if(isNaN(o))throw Error('Invalid end "'+e+'"');if(i>o&&(o=i),null!=this.options.min){var r=this.options.min.valueOf();r>i&&(n=r-i,i+=n,o+=n)}if(null!=this.options.max){var s=this.options.max.valueOf();o>s&&(n=o-s,i-=n,o-=n)}if(null!=this.options.zoomMin){var a=this.options.zoomMin.valueOf();0>a&&(a=0),a>o-i&&(this.end-this.start>a?(n=a-(o-i),i-=n/2,o+=n/2):(i=this.start,o=this.end))}if(null!=this.options.zoomMax){var h=this.options.zoomMax.valueOf();0>h&&(h=0),o-i>h&&(h>this.end-this.start?(n=o-i-h,i+=n/2,o-=n/2):(i=this.start,o=this.end))}var p=this.start!=i||this.end!=o;return this.start=i,this.end=o,p},a.prototype.getRange=function(){return{start:this.start,end:this.end}},a.prototype.conversion=function(t){return this.start,this.end,a.conversion(this.start,this.end,t)},a.conversion=function(t,e,n){return 0!=n&&0!=e-t?{offset:t,factor:n/(e-t)}:{offset:0,factor:1}
+},a.prototype._onMouseDown=function(t,e){t=t||window.event;var n=e.params,i=t.which?1==t.which:1==t.button;if(i){n.mouseX=E.getPageX(t),n.mouseY=E.getPageY(t),n.previousLeft=0,n.previousOffset=0,n.moved=!1,n.start=this.start,n.end=this.end;var o=e.component.frame;o&&(o.style.cursor="move");var r=this;n.onMouseMove||(n.onMouseMove=function(t){r._onMouseMove(t,e)},E.addEventListener(document,"mousemove",n.onMouseMove)),n.onMouseUp||(n.onMouseUp=function(t){r._onMouseUp(t,e)},E.addEventListener(document,"mouseup",n.onMouseUp)),E.preventDefault(t)}},a.prototype._onMouseMove=function(t,e){t=t||window.event;var n=e.params,i=E.getPageX(t),o=E.getPageY(t);void 0==n.mouseX&&(n.mouseX=i),void 0==n.mouseY&&(n.mouseY=o);var r=i-n.mouseX,s=o-n.mouseY,a="horizontal"==e.direction?r:s;Math.abs(a)>=1&&(n.moved=!0);var h=n.end-n.start,p="horizontal"==e.direction?e.component.width:e.component.height,u=-a/p*h;this._applyRange(n.start+u,n.end+u),this._trigger("rangechange"),E.preventDefault(t)},a.prototype._onMouseUp=function(t,e){t=t||window.event;var n=e.params;e.component.frame&&(e.component.frame.style.cursor="auto"),n.onMouseMove&&(E.removeEventListener(document,"mousemove",n.onMouseMove),n.onMouseMove=null),n.onMouseUp&&(E.removeEventListener(document,"mouseup",n.onMouseUp),n.onMouseUp=null),n.moved&&this._trigger("rangechanged")},a.prototype._onMouseWheel=function(t,e){t=t||window.event;var n=0;if(t.wheelDelta?n=t.wheelDelta/120:t.detail&&(n=-t.detail/3),n){var i=this,o=function(){var o=n/5,r=null,s=e.component.frame;if(s){var a,h;if("horizontal"==e.direction){a=e.component.width,h=i.conversion(a);var p=E.getAbsoluteLeft(s),u=E.getPageX(t);r=(u-p)/h.factor+h.offset}else{a=e.component.height,h=i.conversion(a);var c=E.getAbsoluteTop(s),d=E.getPageY(t);r=(c+a-d-c)/h.factor+h.offset}}i.zoom(o,r)};o()}E.preventDefault(t)},a.prototype.zoom=function(t,e){null==e&&(e=(this.start+this.end)/2),t>=1&&(t=.9),-1>=t&&(t=-.9),0>t&&(t/=1+t);var n=this.start-e,i=this.end-e,o=this.start-n*t,r=this.end-i*t;this.setRange(o,r)},a.prototype.move=function(t){var e=this.end-this.start,n=this.start+e*t,i=this.end+e*t;this.start=n,this.end=i},h.prototype.on=function(t,e,n){var i=t instanceof RegExp?t:RegExp(t.replace("*","\\w+")),o={id:E.randomUUID(),event:t,regexp:i,callback:"function"==typeof e?e:null,target:n};return this.subscriptions.push(o),o.id},h.prototype.off=function(t){for(var e=0;this.subscriptions.length>e;){var n=this.subscriptions[e],i=!0;if(t instanceof Object)for(var o in t)t.hasOwnProperty(o)&&t[o]!==n[o]&&(i=!1);else i=n.id==t;i?this.subscriptions.splice(e,1):e++}},h.prototype.emit=function(t,e,n){for(var i=0;this.subscriptions.length>i;i++){var o=this.subscriptions[i];o.regexp.test(t)&&o.callback&&o.callback(t,e,n)}},p.prototype.add=function(t){if(void 0==t.id)throw Error("Component has no field id");if(!(t instanceof u||t instanceof p))throw new TypeError("Component must be an instance of prototype Component or Controller");t.controller=this,this.components[t.id]=t},p.prototype.remove=function(t){var e;for(e in this.components)if(this.components.hasOwnProperty(e)&&(e==t||this.components[e]==t))break;e&&delete this.components[e]},p.prototype.requestReflow=function(t){if(t)this.reflow();else if(!this.reflowTimer){var e=this;this.reflowTimer=setTimeout(function(){e.reflowTimer=void 0,e.reflow()},0)}},p.prototype.requestRepaint=function(t){if(t)this.repaint();else if(!this.repaintTimer){var e=this;this.repaintTimer=setTimeout(function(){e.repaintTimer=void 0,e.repaint()},0)}},p.prototype.repaint=function(){function t(i,o){o in n||(i.depends&&i.depends.forEach(function(e){t(e,e.id)}),i.parent&&t(i.parent,i.parent.id),e=i.repaint()||e,n[o]=!0)}var e=!1;this.repaintTimer&&(clearTimeout(this.repaintTimer),this.repaintTimer=void 0);var n={};E.forEach(this.components,t),e&&this.reflow()},p.prototype.reflow=function(){function t(i,o){o in n||(i.depends&&i.depends.forEach(function(e){t(e,e.id)}),i.parent&&t(i.parent,i.parent.id),e=i.reflow()||e,n[o]=!0)}var e=!1;this.reflowTimer&&(clearTimeout(this.reflowTimer),this.reflowTimer=void 0);var n={};E.forEach(this.components,t),e&&this.repaint()},u.prototype.setOptions=function(t){t&&(E.extend(this.options,t),this.controller&&(this.requestRepaint(),this.requestReflow()))},u.prototype.getContainer=function(){return null},u.prototype.getFrame=function(){return this.frame},u.prototype.repaint=function(){return!1},u.prototype.reflow=function(){return!1},u.prototype.hide=function(){return this.frame&&this.frame.parentNode?(this.frame.parentNode.removeChild(this.frame),!0):!1},u.prototype.show=function(){return this.frame&&this.frame.parentNode?!1:this.repaint()},u.prototype.requestRepaint=function(){if(!this.controller)throw Error("Cannot request a repaint: no controller configured");this.controller.requestRepaint()},u.prototype.requestReflow=function(){if(!this.controller)throw Error("Cannot request a reflow: no controller configured");this.controller.requestReflow()},c.prototype=new u,c.prototype.getContainer=function(){return this.frame},c.prototype.repaint=function(){var t=0,e=E.updateProperty,n=E.option.asSize,i=this.options,o=this.frame;if(o||(o=document.createElement("div"),o.className="panel",i.className&&("function"==typeof i.className?E.addClassName(o,i.className()+""):E.addClassName(o,i.className+"")),this.frame=o,t+=1),!o.parentNode){if(!this.parent)throw Error("Cannot repaint panel: no parent attached");var r=this.parent.getContainer();if(!r)throw Error("Cannot repaint panel: parent has no container element");r.appendChild(o),t+=1}return t+=e(o.style,"top",n(i.top,"0px")),t+=e(o.style,"left",n(i.left,"0px")),t+=e(o.style,"width",n(i.width,"100%")),t+=e(o.style,"height",n(i.height,"100%")),t>0},c.prototype.reflow=function(){var t=0,e=E.updateProperty,n=this.frame;return n?(t+=e(this,"top",n.offsetTop),t+=e(this,"left",n.offsetLeft),t+=e(this,"width",n.offsetWidth),t+=e(this,"height",n.offsetHeight)):t+=1,t>0},d.prototype=new c,d.prototype.setOptions=function(t){E.extend(this.options,t),this.options.autoResize?this._watch():this._unwatch()},d.prototype.repaint=function(){var t=0,e=E.updateProperty,n=E.option.asSize,i=this.options,o=this.frame;if(o||(o=document.createElement("div"),o.className="graph panel",i.className&&E.addClassName(o,E.option.asString(i.className)),this.frame=o,t+=1),!o.parentNode){if(!this.container)throw Error("Cannot repaint root panel: no container attached");this.container.appendChild(o),t+=1}return t+=e(o.style,"top",n(i.top,"0px")),t+=e(o.style,"left",n(i.left,"0px")),t+=e(o.style,"width",n(i.width,"100%")),t+=e(o.style,"height",n(i.height,"100%")),this._updateEventEmitters(),t>0},d.prototype.reflow=function(){var t=0,e=E.updateProperty,n=this.frame;return n?(t+=e(this,"top",n.offsetTop),t+=e(this,"left",n.offsetLeft),t+=e(this,"width",n.offsetWidth),t+=e(this,"height",n.offsetHeight)):t+=1,t>0},d.prototype._watch=function(){var t=this;this._unwatch();var e=function(){return t.options.autoResize?(t.frame&&(t.frame.clientWidth!=t.width||t.frame.clientHeight!=t.height)&&t.requestReflow(),void 0):(t._unwatch(),void 0)};E.addEventListener(window,"resize",e),this.watchTimer=setInterval(e,1e3)},d.prototype._unwatch=function(){this.watchTimer&&(clearInterval(this.watchTimer),this.watchTimer=void 0)},d.prototype.on=function(t,e){var n=this.listeners[t];n||(n=[],this.listeners[t]=n),n.push(e),this._updateEventEmitters()},d.prototype._updateEventEmitters=function(){if(this.listeners){var t=this;E.forEach(this.listeners,function(e,n){if(t.emitters||(t.emitters={}),!(n in t.emitters)){var i=t.frame;if(i){var o=function(t){e.forEach(function(e){e(t)})};t.emitters[n]=o,E.addEventListener(i,n,o)}}})}},l.prototype=new u,l.prototype.setOptions=function(t){E.extend(this.options,t)},l.prototype.setRange=function(t){if(!(t instanceof a||t&&t.start&&t.end))throw new TypeError("Range must be an instance of Range, or an object containing start and end.");this.range=t},l.prototype.toTime=function(t){var e=this.conversion;return new Date(t/e.factor+e.offset)},l.prototype.toScreen=function(t){var e=this.conversion;return(t.valueOf()-e.offset)*e.factor},l.prototype.repaint=function(){var t=0,e=E.updateProperty,n=E.option.asSize,i=this.options,o=this.props,r=this.step,s=this.frame;if(s||(s=document.createElement("div"),this.frame=s,t+=1),s.className="axis "+i.orientation,!s.parentNode){if(!this.parent)throw Error("Cannot repaint time axis: no parent attached");var a=this.parent.getContainer();if(!a)throw Error("Cannot repaint time axis: parent has no container element");a.appendChild(s),t+=1}var h=s.parentNode;if(h){var p=s.nextSibling;h.removeChild(s);var u=i.orientation,c="bottom"==u&&this.props.parentHeight&&this.height?this.props.parentHeight-this.height+"px":"0px";if(t+=e(s.style,"top",n(i.top,c)),t+=e(s.style,"left",n(i.left,"0px")),t+=e(s.style,"width",n(i.width,"100%")),t+=e(s.style,"height",n(i.height,this.height+"px")),this._repaintMeasureChars(),this.step){this._repaintStart(),r.first();for(var d=void 0,l=0;r.hasNext()&&1e3>l;){l++;var f=r.getCurrent(),m=this.toScreen(f),g=r.isMajor();i.showMinorLabels&&this._repaintMinorText(m,r.getLabelMinor()),g&&i.showMajorLabels?(m>0&&(void 0==d&&(d=m),this._repaintMajorText(m,r.getLabelMajor())),this._repaintMajorLine(m)):this._repaintMinorLine(m),r.next()}if(i.showMajorLabels){var v=this.toTime(0),y=r.getLabelMajor(v),b=y.length*(o.majorCharWidth||10)+10;(void 0==d||d>b)&&this._repaintMajorText(0,y)}this._repaintEnd()}this._repaintLine(),p?h.insertBefore(s,p):h.appendChild(s)}return t>0},l.prototype._repaintStart=function(){var t=this.dom,e=t.redundant;e.majorLines=t.majorLines,e.majorTexts=t.majorTexts,e.minorLines=t.minorLines,e.minorTexts=t.minorTexts,t.majorLines=[],t.majorTexts=[],t.minorLines=[],t.minorTexts=[]},l.prototype._repaintEnd=function(){E.forEach(this.dom.redundant,function(t){for(;t.length;){var e=t.pop();e&&e.parentNode&&e.parentNode.removeChild(e)}})},l.prototype._repaintMinorText=function(t,e){var n=this.dom.redundant.minorTexts.shift();if(!n){var i=document.createTextNode("");n=document.createElement("div"),n.appendChild(i),n.className="text minor",this.frame.appendChild(n)}this.dom.minorTexts.push(n),n.childNodes[0].nodeValue=e,n.style.left=t+"px",n.style.top=this.props.minorLabelTop+"px"},l.prototype._repaintMajorText=function(t,e){var n=this.dom.redundant.majorTexts.shift();if(!n){var i=document.createTextNode(e);n=document.createElement("div"),n.className="text major",n.appendChild(i),this.frame.appendChild(n)}this.dom.majorTexts.push(n),n.childNodes[0].nodeValue=e,n.style.top=this.props.majorLabelTop+"px",n.style.left=t+"px"},l.prototype._repaintMinorLine=function(t){var e=this.dom.redundant.minorLines.shift();e||(e=document.createElement("div"),e.className="grid vertical minor",this.frame.appendChild(e)),this.dom.minorLines.push(e);var n=this.props;e.style.top=n.minorLineTop+"px",e.style.height=n.minorLineHeight+"px",e.style.left=t-n.minorLineWidth/2+"px"},l.prototype._repaintMajorLine=function(t){var e=this.dom.redundant.majorLines.shift();e||(e=document.createElement("DIV"),e.className="grid vertical major",this.frame.appendChild(e)),this.dom.majorLines.push(e);var n=this.props;e.style.top=n.majorLineTop+"px",e.style.left=t-n.majorLineWidth/2+"px",e.style.height=n.majorLineHeight+"px"},l.prototype._repaintLine=function(){var t=this.dom.line,e=this.frame,n=this.options;n.showMinorLabels||n.showMajorLabels?(t?(e.removeChild(t),e.appendChild(t)):(t=document.createElement("div"),t.className="grid horizontal major",e.appendChild(t),this.dom.line=t),t.style.top=this.props.lineTop+"px"):t&&axis.parentElement&&(e.removeChild(axis.line),delete this.dom.line)},l.prototype._repaintMeasureChars=function(){var t,e=this.dom;if(!e.measureCharMinor){t=document.createTextNode("0");var n=document.createElement("DIV");n.className="text minor measure",n.appendChild(t),this.frame.appendChild(n),e.measureCharMinor=n}if(!e.measureCharMajor){t=document.createTextNode("0");var i=document.createElement("DIV");i.className="text major measure",i.appendChild(t),this.frame.appendChild(i),e.measureCharMajor=i}},l.prototype.reflow=function(){var t=0,e=E.updateProperty,n=this.frame,i=this.range;if(!i)throw Error("Cannot repaint time axis: no range configured");if(n){t+=e(this,"top",n.offsetTop),t+=e(this,"left",n.offsetLeft);var o=this.props,r=this.options.showMinorLabels,s=this.options.showMajorLabels,a=this.dom.measureCharMinor,h=this.dom.measureCharMajor;a&&(o.minorCharHeight=a.clientHeight,o.minorCharWidth=a.clientWidth),h&&(o.majorCharHeight=h.clientHeight,o.majorCharWidth=h.clientWidth);var p=n.parentNode?n.parentNode.offsetHeight:0;switch(p!=o.parentHeight&&(o.parentHeight=p,t+=1),this.options.orientation){case"bottom":o.minorLabelHeight=r?o.minorCharHeight:0,o.majorLabelHeight=s?o.majorCharHeight:0,o.minorLabelTop=0,o.majorLabelTop=o.minorLabelTop+o.minorLabelHeight,o.minorLineTop=-this.top,o.minorLineHeight=Math.max(this.top+o.majorLabelHeight,0),o.minorLineWidth=1,o.majorLineTop=-this.top,o.majorLineHeight=Math.max(this.top+o.minorLabelHeight+o.majorLabelHeight,0),o.majorLineWidth=1,o.lineTop=0;break;case"top":o.minorLabelHeight=r?o.minorCharHeight:0,o.majorLabelHeight=s?o.majorCharHeight:0,o.majorLabelTop=0,o.minorLabelTop=o.majorLabelTop+o.majorLabelHeight,o.minorLineTop=o.minorLabelTop,o.minorLineHeight=Math.max(p-o.majorLabelHeight-this.top),o.minorLineWidth=1,o.majorLineTop=0,o.majorLineHeight=Math.max(p-this.top),o.majorLineWidth=1,o.lineTop=o.majorLabelHeight+o.minorLabelHeight;break;default:throw Error('Unkown orientation "'+this.options.orientation+'"')}var u=o.minorLabelHeight+o.majorLabelHeight;t+=e(this,"width",n.offsetWidth),t+=e(this,"height",u),this._updateConversion();var c=E.cast(i.start,"Date"),d=E.cast(i.end,"Date"),l=this.toTime(5*(o.minorCharWidth||10))-this.toTime(0);this.step=new TimeStep(c,d,l),t+=e(o.range,"start",c.valueOf()),t+=e(o.range,"end",d.valueOf()),t+=e(o.range,"minimumStep",l.valueOf())}return t>0},l.prototype._updateConversion=function(){var t=this.range;if(!t)throw Error("No range configured");this.conversion=t.conversion?t.conversion(this.width):a.conversion(t.start,t.end,this.width)},f.prototype=new c,f.types={box:g,range:y,point:v},f.prototype.setOptions=function(t){E.extend(this.options,t),this.stack.setOptions(this.options)},f.prototype.setRange=function(t){if(!(t instanceof a||t&&t.start&&t.end))throw new TypeError("Range must be an instance of Range, or an object containing start and end.");this.range=t},f.prototype.repaint=function(){var t=0,e=E.updateProperty,n=E.option.asSize,i=this.options,o=this.frame;if(!o){o=document.createElement("div"),o.className="itemset",i.className&&E.addClassName(o,E.option.asString(i.className));var r=document.createElement("div");r.className="background",o.appendChild(r),this.dom.background=r;var s=document.createElement("div");s.className="foreground",o.appendChild(s),this.dom.foreground=s;var a=document.createElement("div");a.className="itemset-axis",this.dom.axis=a,this.frame=o,t+=1}if(!this.parent)throw Error("Cannot repaint itemset: no parent attached");var h=this.parent.getContainer();if(!h)throw Error("Cannot repaint itemset: parent has no container element");o.parentNode||(h.appendChild(o),t+=1),this.dom.axis.parentNode||(h.appendChild(this.dom.axis),t+=1),t+=e(o.style,"left",n(i.left,"0px")),t+=e(o.style,"top",n(i.top,"0px")),t+=e(o.style,"width",n(i.width,"100%")),t+=e(o.style,"height",n(i.height,this.height+"px")),t+=e(this.dom.axis.style,"left",n(i.left,"0px")),t+=e(this.dom.axis.style,"top",this.height+this.top+"px"),t+=e(this.dom.axis.style,"width",n(i.width,"100%")),this._updateConversion();var p=this,u=this.queue,c=this.items,d=this.contents,l={fields:["id","start","end","content","type"]};return Object.keys(u).forEach(function(e){var n=u[e],o=d[e];switch(n){case"add":case"update":var r=c.get(e,l),s=r.type||r.start&&r.end&&"range"||"box",a=f.types[s];if(o&&(a&&o instanceof a?(o.data=r,t++):(t+=o.hide(),o=null)),!o){if(!a)throw new TypeError('Unknown item type "'+s+'"');o=new a(p,r,i),t++}d[e]=o,delete u[e];break;case"remove":o&&(t+=o.hide()),delete d[e],delete u[e];break;default:console.log('Error: unknown action "'+n+'"')}}),E.forEach(this.contents,function(e){e.visible?(t+=e.show(),e.reposition()):t+=e.hide()}),t>0},f.prototype.getForeground=function(){return this.dom.foreground},f.prototype.getBackground=function(){return this.dom.background},f.prototype.getAxis=function(){return this.dom.axis},f.prototype.reflow=function(){var t=0,e=this.options,n=E.updateProperty,i=E.option.asNumber,o=this.frame;if(o){this._updateConversion(),E.forEach(this.contents,function(e){t+=e.reflow()}),this.stack.update();var r,s=i(e.maxHeight);if(null!=e.height)r=o.offsetHeight;else{var a=this.stack.ordered;if(a.length){var h=a[0].top,p=a[0].top+a[0].height;E.forEach(a,function(t){h=Math.min(h,t.top),p=Math.max(p,t.top+t.height)}),r=p-h+e.margin.axis+e.margin.item}else r=e.margin.axis+e.margin.item}null!=s&&(r=Math.min(r,s)),t+=n(this,"height",r),t+=n(this,"top",o.offsetTop),t+=n(this,"left",o.offsetLeft),t+=n(this,"width",o.offsetWidth)}else t+=1;return t>0},f.prototype.hide=function(){var t=!1;return this.frame&&this.frame.parentNode&&(this.frame.parentNode.removeChild(this.frame),t=!0),this.dom.axis&&this.dom.axis.parentNode&&(this.dom.axis.parentNode.removeChild(this.dom.axis),t=!0),t},f.prototype.setItems=function(t){var e,n,i=this,s=this.items;if(s&&(E.forEach(this.listeners,function(t,e){s.unsubscribe(e,t)}),e=s.get({fields:["id"]}),n=[],E.forEach(e,function(t,e){n[e]=t.id}),this._onRemove(n)),t){if(!(t instanceof o||t instanceof r))throw new TypeError("Data must be an instance of DataSet");this.items=t}else this.items=null;if(this.items){var a=this.id;E.forEach(this.listeners,function(t,e){i.items.subscribe(e,t,a)}),e=this.items.get({fields:["id"]}),n=[],E.forEach(e,function(t,e){n[e]=t.id}),this._onAdd(n)}},f.prototype.getItems=function(){return this.items},f.prototype._onUpdate=function(t){this._toQueue(t,"update")},f.prototype._onAdd=function(t){this._toQueue(t,"add")},f.prototype._onRemove=function(t){this._toQueue(t,"remove")},f.prototype._toQueue=function(t,e){var n=this.queue;t.forEach(function(t){n[t]=e}),this.controller&&this.requestRepaint()},f.prototype._updateConversion=function(){var t=this.range;if(!t)throw Error("No range configured");this.conversion=t.conversion?t.conversion(this.width):a.conversion(t.start,t.end,this.width)},f.prototype.toTime=function(t){var e=this.conversion;return new Date(t/e.factor+e.offset)},f.prototype.toScreen=function(t){var e=this.conversion;return(t.valueOf()-e.offset)*e.factor},m.prototype.select=function(){this.selected=!0},m.prototype.unselect=function(){this.selected=!1},m.prototype.show=function(){return!1},m.prototype.hide=function(){return!1},m.prototype.repaint=function(){return!1},m.prototype.reflow=function(){return!1},g.prototype=new m(null,null),g.prototype.select=function(){this.selected=!0},g.prototype.unselect=function(){this.selected=!1},g.prototype.repaint=function(){var t=!1,e=this.dom;if(e||(this._create(),e=this.dom,t=!0),e){if(!this.options&&!this.parent)throw Error("Cannot repaint item: no parent attached");var n=this.parent.getForeground();if(!n)throw Error("Cannot repaint time axis: parent has no foreground container element");var i=this.parent.getBackground();if(!i)throw Error("Cannot repaint time axis: parent has no background container element");var o=this.parent.getAxis();if(!i)throw Error("Cannot repaint time axis: parent has no axis container element");if(e.box.parentNode||(n.appendChild(e.box),t=!0),e.line.parentNode||(i.appendChild(e.line),t=!0),e.dot.parentNode||(o.appendChild(e.dot),t=!0),this.data.content!=this.content){if(this.content=this.data.content,this.content instanceof Element)e.content.innerHTML="",e.content.appendChild(this.content);else{if(void 0==this.data.content)throw Error('Property "content" missing in item '+this.data.id);e.content.innerHTML=this.content}t=!0}var r=(this.data.className?" "+this.data.className:"")+(this.selected?" selected":"");this.className!=r&&(this.className=r,e.box.className="item box"+r,e.line.className="item line"+r,e.dot.className="item dot"+r,t=!0)}return t},g.prototype.show=function(){return this.dom&&this.dom.box.parentNode?!1:this.repaint()},g.prototype.hide=function(){var t=!1,e=this.dom;return e&&(e.box.parentNode&&(e.box.parentNode.removeChild(e.box),t=!0),e.line.parentNode&&e.line.parentNode.removeChild(e.line),e.dot.parentNode&&e.dot.parentNode.removeChild(e.dot)),t},g.prototype.reflow=function(){var t,e,n,i,o,r,s,a,h,p,u,c=0;if(void 0==this.data.start)throw Error('Property "start" missing in item '+this.data.id);if(p=this.data,u=this.parent&&this.parent.range,this.visible=p&&u?p.start>u.start&&p.start<u.end:!1,this.visible)if(e=this.dom)if(t=E.updateProperty,n=this.props,i=this.options,o=this.parent.toScreen(this.data.start),r=i&&i.align,s=i.orientation,c+=t(n.dot,"height",e.dot.offsetHeight),c+=t(n.dot,"width",e.dot.offsetWidth),c+=t(n.line,"width",e.line.offsetWidth),c+=t(n.line,"height",e.line.offsetHeight),c+=t(n.line,"top",e.line.offsetTop),c+=t(this,"width",e.box.offsetWidth),c+=t(this,"height",e.box.offsetHeight),h="right"==r?o-this.width:"left"==r?o:o-this.width/2,t(this,"left",h),t(n.line,"left",o-n.line.width/2),t(n.dot,"left",o-n.dot.width/2),t(n.dot,"top",-n.dot.height/2),"top"==s)a=i.margin.axis,t(this,"top",a);else{var d=this.parent.height;a=d-this.height-i.margin.axis,t(this,"top",a)}else c+=1;return c>0},g.prototype._create=function(){var t=this.dom;t||(this.dom=t={},t.box=document.createElement("DIV"),t.content=document.createElement("DIV"),t.content.className="content",t.box.appendChild(t.content),t.line=document.createElement("DIV"),t.line.className="line",t.dot=document.createElement("DIV"),t.dot.className="dot")},g.prototype.reposition=function(){var t=this.dom,e=this.props,n=this.options.orientation;if(t){var i=t.box,o=t.line,r=t.dot;i.style.left=this.left+"px",i.style.top=this.top+"px",o.style.left=e.line.left+"px","top"==n?(o.style.top="0px",o.style.height=this.top+"px"):(o.style.top=this.top+this.height+"px",o.style.height=Math.max(this.parent.height-this.top-this.height+this.props.dot.height/2,0)+"px"),r.style.left=e.dot.left+"px",r.style.top=e.dot.top+"px"}},v.prototype=new m(null,null),v.prototype.select=function(){this.selected=!0},v.prototype.unselect=function(){this.selected=!1},v.prototype.repaint=function(){var t=!1,e=this.dom;if(e||(this._create(),e=this.dom,t=!0),e){if(!this.options&&!this.options.parent)throw Error("Cannot repaint item: no parent attached");var n=this.parent.getForeground();if(!n)throw Error("Cannot repaint time axis: parent has no foreground container element");if(e.point.parentNode||(n.appendChild(e.point),n.appendChild(e.point),t=!0),this.data.content!=this.content){if(this.content=this.data.content,this.content instanceof Element)e.content.innerHTML="",e.content.appendChild(this.content);else{if(void 0==this.data.content)throw Error('Property "content" missing in item '+this.data.id);e.content.innerHTML=this.content}t=!0}var i=(this.data.className?" "+this.data.className:"")+(this.selected?" selected":"");this.className!=i&&(this.className=i,e.point.className="item point"+i,t=!0)}return t},v.prototype.show=function(){return this.dom&&this.dom.point.parentNode?!1:this.repaint()},v.prototype.hide=function(){var t=!1,e=this.dom;return e&&e.point.parentNode&&(e.point.parentNode.removeChild(e.point),t=!0),t},v.prototype.reflow=function(){var t,e,n,i,o,r,s,a,h,p=0;if(void 0==this.data.start)throw Error('Property "start" missing in item '+this.data.id);if(a=this.data,h=this.parent&&this.parent.range,this.visible=a&&h?a.start>h.start&&a.start<h.end:!1,this.visible)if(e=this.dom){if(t=E.updateProperty,n=this.props,i=this.options,o=i.orientation,r=this.parent.toScreen(this.data.start),p+=t(this,"width",e.point.offsetWidth),p+=t(this,"height",e.point.offsetHeight),p+=t(n.dot,"width",e.dot.offsetWidth),p+=t(n.dot,"height",e.dot.offsetHeight),p+=t(n.content,"height",e.content.offsetHeight),"top"==o)s=i.margin.axis;else{var u=this.parent.height;s=Math.max(u-this.height-i.margin.axis,0)}p+=t(this,"top",s),p+=t(this,"left",r-n.dot.width/2),p+=t(n.content,"marginLeft",1.5*n.dot.width),p+=t(n.dot,"top",(this.height-n.dot.height)/2)}else p+=1;return p>0},v.prototype._create=function(){var t=this.dom;t||(this.dom=t={},t.point=document.createElement("div"),t.content=document.createElement("div"),t.content.className="content",t.point.appendChild(t.content),t.dot=document.createElement("div"),t.dot.className="dot",t.point.appendChild(t.dot))},v.prototype.reposition=function(){var t=this.dom,e=this.props;t&&(t.point.style.top=this.top+"px",t.point.style.left=this.left+"px",t.content.style.marginLeft=e.content.marginLeft+"px",t.dot.style.top=e.dot.top+"px")},y.prototype=new m(null,null),y.prototype.select=function(){this.selected=!0},y.prototype.unselect=function(){this.selected=!1},y.prototype.repaint=function(){var t=!1,e=this.dom;if(e||(this._create(),e=this.dom,t=!0),e){if(!this.options&&!this.options.parent)throw Error("Cannot repaint item: no parent attached");var n=this.parent.getForeground();if(!n)throw Error("Cannot repaint time axis: parent has no foreground container element");if(e.box.parentNode||(n.appendChild(e.box),t=!0),this.data.content!=this.content){if(this.content=this.data.content,this.content instanceof Element)e.content.innerHTML="",e.content.appendChild(this.content);else{if(void 0==this.data.content)throw Error('Property "content" missing in item '+this.data.id);e.content.innerHTML=this.content}t=!0}var i=this.data.className?""+this.data.className:"";this.className!=i&&(this.className=i,e.box.className="item range"+i,t=!0)}return t},y.prototype.show=function(){return this.dom&&this.dom.box.parentNode?!1:this.repaint()},y.prototype.hide=function(){var t=!1,e=this.dom;return e&&e.box.parentNode&&(e.box.parentNode.removeChild(e.box),t=!0),t},y.prototype.reflow=function(){var t,e,n,i,o,r,s,a,h,p,u,c,d,l,f=0;if(void 0==this.data.start)throw Error('Property "start" missing in item '+this.data.id);if(void 0==this.data.end)throw Error('Property "end" missing in item '+this.data.id);return s=this.data,a=this.parent&&this.parent.range,this.visible=s&&a?s.start<a.end&&s.end>a.start:!1,this.visible&&(t=this.dom,t?(e=this.props,n=this.options,i=this.parent,o=i.toScreen(this.data.start),r=i.toScreen(this.data.end),h=E.updateProperty,p=t.box,u=i.width,d=n.orientation,f+=h(e.content,"width",t.content.offsetWidth),f+=h(this,"height",p.offsetHeight),-u>o&&(o=-u),r>2*u&&(r=2*u),c=0>o?Math.min(-o,r-o-e.content.width-2*n.padding):0,f+=h(e.content,"left",c),"top"==d?(l=n.margin.axis,f+=h(this,"top",l)):(l=i.height-this.height-n.margin.axis,f+=h(this,"top",l)),f+=h(this,"left",o),f+=h(this,"width",Math.max(r-o,1))):f+=1),f>0},y.prototype._create=function(){var t=this.dom;t||(this.dom=t={},t.box=document.createElement("div"),t.content=document.createElement("div"),t.content.className="content",t.box.appendChild(t.content))},y.prototype.reposition=function(){var t=this.dom,e=this.props;t&&(t.box.style.top=this.top+"px",t.box.style.left=this.left+"px",t.box.style.width=this.width+"px",t.content.style.left=e.content.left+"px")},b.prototype=new c,b.prototype.setOptions=function(t){E.extend(this.options,t);var e=this;E.forEach(this.contents,function(t){t.itemset.setOptions(e.options)})},b.prototype.setRange=function(){},b.prototype.setItems=function(t){this.items=t,E.forEach(this.contents,function(e){e.itemset.setItems(t)})},b.prototype.getItems=function(){return this.items},b.prototype.setRange=function(t){this.range=t},b.prototype.setGroups=function(t){var e,n,i=this;if(this.groups&&(E.forEach(this.listeners,function(t,e){i.groups.unsubscribe(e,t)}),e=this.groups.get({fields:["id"]}),n=[],E.forEach(e,function(t,e){n[e]=t.id}),this._onRemove(n)),t?t instanceof o?this.groups=t:(this.groups=new o({fieldTypes:{start:"Date",end:"Date"}}),this.groups.add(t)):this.groups=null,this.groups){var r=this.id;E.forEach(this.listeners,function(t,e){i.groups.subscribe(e,t,r)}),e=this.groups.get({fields:["id"]}),n=[],E.forEach(e,function(t,e){n[e]=t.id}),this._onAdd(n)}},b.prototype.getGroups=function(){return this.groups},b.prototype.repaint=function(){var t=0,e=E.updateProperty,n=E.option.asSize,i=this.options,o=this.frame;if(o||(o=document.createElement("div"),o.className="groupset",i.className&&E.addClassName(o,E.option.asString(i.className)),this.frame=o,t+=1),!this.parent)throw Error("Cannot repaint groupset: no parent attached");var r=this.parent.getContainer();if(!r)throw Error("Cannot repaint groupset: parent has no container element");o.parentNode||(r.appendChild(o),t+=1),t+=e(o.style,"height",n(i.height,this.height+"px")),t+=e(o.style,"top",n(i.top,"0px")),t+=e(o.style,"left",n(i.left,"0px")),t+=e(o.style,"width",n(i.width,"100%"));var s=this,a=this.queue,h=(this.items,this.contents),p=this.groups,u=Object.keys(a);if(u.length){u.forEach(function(e){for(var n=a[e],i=null,o=-1,r=0;h.length>r;r++)if(h[r].id==e){i=h[r],o=r;break}switch(n){case"add":case"update":if(!i){var u=new f(s);u.setOptions(E.extend({top:function(){return 0}},s.options)),u.setRange(s.range),u.setItems(s.items),s.controller.add(u),i={id:e,data:p.get(e),itemset:u},h.push(i)}delete a[e];break;case"remove":i&&(t+=i.itemset.hide(),i.itemset.setItems(),s.controller.remove(i.itemset),h.splice(o,1)),delete a[e];break;default:console.log('Error: unknown action "'+n+'"')}});var c=null;E.forEach(this.contents,function(t){var e=c&&c.itemset;t.itemset.options.top=e?function(){return e.top+e.height}:0,c=t})}return E.forEach(this.contents,function(e){t+=e.itemset.repaint()}),t>0},b.prototype.getContainer=function(){return this.frame},b.prototype.reflow=function(){var t=0,e=this.options,n=E.updateProperty,i=E.option.asNumber,o=this.frame;if(o){E.forEach(this.contents,function(e){t+=e.itemset.reflow()});var r,s=i(e.maxHeight);null!=e.height?r=o.offsetHeight:(r=0,E.forEach(this.contents,function(t){r+=t.itemset.height})),null!=s&&(r=Math.min(r,s)),t+=n(this,"height",r),t+=n(this,"top",o.offsetTop),t+=n(this,"left",o.offsetLeft),t+=n(this,"width",o.offsetWidth)}return t>0},b.prototype.hide=function(){return this.frame&&this.frame.parentNode?(this.frame.parentNode.removeChild(this.frame),!0):!1},b.prototype.show=function(){return this.frame&&this.frame.parentNode?!1:this.repaint()},b.prototype._onUpdate=function(t){this._toQueue(t,"update")},b.prototype._onAdd=function(t){this._toQueue(t,"add")},b.prototype._onRemove=function(t){this._toQueue(t,"remove")},b.prototype._toQueue=function(t,e){var n=this.queue;t.forEach(function(t){n[t]=e}),this.controller&&this.requestRepaint()},w.prototype.setOptions=function(t){E.extend(this.options,t),this.timeaxis.setOptions({orientation:this.options.orientation,showMinorLabels:this.options.showMinorLabels,showMajorLabels:this.options.showMajorLabels}),this.range.setOptions({min:this.options.min,max:this.options.max,zoomMin:this.options.zoomMin,zoomMax:this.options.zoomMax});var e,n,i,o,r=this;if(e="top"==this.options.orientation?function(){return r.timeaxis.height}:function(){return r.main.height-r.timeaxis.height-r.content.height},this.options.height?(i=this.options.height,n=function(){return r.main.height-r.timeaxis.height}):(i=function(){return r.timeaxis.height+r.content.height},n=null),this.options.maxHeight){if(!E.isNumber(this.options.maxHeight))throw new TypeError("Number expected for property maxHeight");o=function(){return r.options.maxHeight-r.timeaxis.height}}this.main.setOptions({height:i}),this.content.setOptions({orientation:this.options.orientation,top:e,height:n,maxHeight:o}),this.controller.repaint()},w.prototype.setItems=function(t){var e,n=null==this.items;if(t?t instanceof o&&(e=t):e=null,t instanceof o||(e=new o({fieldTypes:{start:"Date",end:"Date"}}),e.add(t)),this.items=e,this.content.setItems(e),n&&(void 0==this.options.start||void 0==this.options.end)){var i=this.getItemRange(),r=i.min,s=i.max;
+if(null!=r&&null!=s){var a=s.valueOf()-r.valueOf();r=new Date(r.valueOf()-.05*a),s=new Date(s.valueOf()+.05*a)}void 0!=this.options.start&&(r=new Date(this.options.start.valueOf())),void 0!=this.options.end&&(s=new Date(this.options.end.valueOf())),(null!=r||null!=s)&&this.range.setRange(r,s)}},w.prototype.setGroups=function(t){this.groups=t;var e=this.groups?b:f;this.content instanceof e||(this.content&&(this.content.hide(),this.content.setItems&&this.content.setItems(),this.content.setGroups&&this.content.setGroups(),this.controller.remove(this.content)),this.content=new e(this.main,[this.timeaxis]),this.content.setRange&&this.content.setRange(this.range),this.content.setItems&&this.content.setItems(this.items),this.content.setGroups&&this.content.setGroups(this.groups),this.controller.add(this.content),this.setOptions(this.options))},w.prototype.getItemRange=function(){var t=this.items,e=null,n=null;if(t){var i=t.min("start");e=i?i.start.valueOf():null;var o=t.max("start");o&&(n=o.start.valueOf());var r=t.max("end");r&&(n=null==n?r.end.valueOf():Math.max(n,r.end.valueOf()))}return{min:null!=e?new Date(e):null,max:null!=n?new Date(n):null}};var C={util:E,events:_,Controller:p,DataSet:o,DataView:r,Range:a,Stack:s,TimeStep:TimeStep,EventBus:h,components:{items:{Item:m,ItemBox:g,ItemPoint:v,ItemRange:y},Component:u,Panel:c,RootPanel:d,ItemSet:f,TimeAxis:l},Timeline:w};i!==void 0&&(i=C),n!==void 0&&n.exports!==void 0&&(n.exports=C),"function"==typeof t&&t(function(){return C}),"undefined"!=typeof window&&(window.vis=C),E.loadCss("/* vis.js stylesheet */\n\n.graph {\n    position: relative;\n    border: 1px solid #bfbfbf;\n}\n\n.graph .panel {\n    position: absolute;\n}\n\n.graph .groupset {\n    position: absolute;\n    padding: 0;\n    margin: 0;\n}\n\n\n.graph .itemset {\n    position: absolute;\n    padding: 0;\n    margin: 0;\n    overflow: hidden;\n}\n\n.graph .background {\n}\n\n.graph .foreground {\n}\n\n.graph .itemset-axis {\n    position: absolute;\n}\n\n.graph .groupset .itemset-axis {\n    border-top: 1px solid #bfbfbf;\n}\n\n.graph .groupset .itemset-axis:last-child {\n    border-top: none;\n}\n\n\n.graph .item {\n    position: absolute;\n    color: #1A1A1A;\n    border-color: #97B0F8;\n    background-color: #D5DDF6;\n    display: inline-block;\n}\n\n.graph .item.selected {\n    border-color: #FFC200;\n    background-color: #FFF785;\n    z-index: 999;\n}\n\n.graph .item.cluster {\n    /* TODO: use another color or pattern? */\n    background: #97B0F8 url('img/cluster_bg.png');\n    color: white;\n}\n.graph .item.cluster.point {\n    border-color: #D5DDF6;\n}\n\n.graph .item.box {\n    text-align: center;\n    border-style: solid;\n    border-width: 1px;\n    border-radius: 5px;\n    -moz-border-radius: 5px; /* For Firefox 3.6 and older */\n}\n\n.graph .item.point {\n    background: none;\n}\n\n.graph .dot {\n    border: 5px solid #97B0F8;\n    position: absolute;\n    border-radius: 5px;\n    -moz-border-radius: 5px;  /* For Firefox 3.6 and older */\n}\n\n.graph .item.range {\n    overflow: hidden;\n    border-style: solid;\n    border-width: 1px;\n    border-radius: 2px;\n    -moz-border-radius: 2px;  /* For Firefox 3.6 and older */\n}\n\n.graph .item.range .drag-left {\n    cursor: w-resize;\n    z-index: 1000;\n}\n\n.graph .item.range .drag-right {\n    cursor: e-resize;\n    z-index: 1000;\n}\n\n.graph .item.range .content {\n    position: relative;\n    display: inline-block;\n}\n\n.graph .item.line {\n    position: absolute;\n    width: 0;\n    border-left-width: 1px;\n    border-left-style: solid;\n}\n\n.graph .item .content {\n    margin: 5px;\n    white-space: nowrap;\n    overflow: hidden;\n}\n\n/* TODO: better css name, 'graph' is way to generic */\n\n.graph {\n    overflow: hidden;\n}\n\n.graph .axis {\n    position: relative;\n}\n\n.graph .axis .text {\n    position: absolute;\n    color: #4d4d4d;\n    padding: 3px;\n    white-space: nowrap;\n}\n\n.graph .axis 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