Merge branch 'develop' of https://github.com/almende/vis into template-fix

9 years ago · 5af1b893fe
--- a/docs/timeline/index.html
+++ b/docs/timeline/index.html
@ -675,6 +675,15 @@ function (option, path) {
      </td>
    </tr>
    <tr>
      <td>horizontalScroll</td>
      <td>Boolean</td>
      <td>false</td>
      <td>This option allows you to scroll horizontally to move backwards and forwards in the time range.
       Only applicable when option <code>zoomCtrl</code> is defined or <code>zoomable</code> is <code>false</code>.
      </td>
    </tr>
    <tr>
      <td>itemsAlwaysDraggable</td>
      <td>boolean</td>
@ -1015,6 +1024,14 @@ function (option, path) {
      </td>
    </tr>
    <tr>
      <td>verticalScroll</td>
      <td>Boolean</td>
      <td>false</td>
      <td> Show a vertical scroll on the side of the group list.    
      </td>
    </tr>
    <tr>
      <td>width</td>
      <td>String or Number</td>
--- a/examples/graph3d/11_tooltips.html
+++ b/examples/graph3d/11_tooltips.html
@ -5,6 +5,12 @@
  <style>
    body {font: 10pt arial;}
    div#info {
      width     : 600px;
      text-align: center;
      margin-top: 2em;
      font-size : 1.2em;
    }
  </style>
  <script type="text/javascript" src="../../dist/vis.js"></script>
@ -24,11 +30,11 @@
      // Create and populate a data table.
      data = new vis.DataSet();
    var extra_content = [
    'Arbitrary information',
    'You can access data from the point source object',
    'Tooltip example content',
    ];
      var extra_content = [
        'Arbitrary information',
        'You can access data from the point source object',
        'Tooltip example content',
      ];
      // create some nice looking data with sin/cos
      var steps = 5;  // number of datapoints will be steps*steps
@ -42,7 +48,7 @@
            data.add({x:x, y:y, z: z, style:value, extra: extra_content[(x*y) % extra_content.length]});
          }
          else {
      data.add({x:x, y:y, z: z, extra: extra_content[(x*y) % extra_content.length]});
            data.add({x:x, y:y, z: z, extra: extra_content[(x*y) % extra_content.length]});
          }
        }
      }
@ -61,8 +67,8 @@
        //tooltip: true,
        tooltip: function (point) {
          // parameter point contains properties x, y, z, and data
      // data is the original object passed to the point constructor
      return 'value: <b>' + point.z + '</b><br>' + point.data.extra;
          // data is the original object passed to the point constructor
          return 'value: <b>' + point.z + '</b><br>' + point.data.extra;
        },
        keepAspectRatio: true,
@ -106,6 +112,7 @@
 <div id="mygraph"></div>
 <div id="info"></div>
 <div id="info">Hover the mouse cursor over the graph to see tooltips.</div>
 </body>
 </html>
--- a/examples/timeline/other/horizontalScroll.html
+++ b/examples/timeline/other/horizontalScroll.html
@ -0,0 +1,77 @@
 <html>
 <head>
  <title>Timeline | Horizontal Scroll Option</title>
  <script src="../../../dist/vis.js"></script>
  <link href="../../../dist/vis.css" rel="stylesheet" type="text/css" />
  <script src="../../googleAnalytics.js"></script>
 </head>
 <body>
 <h1>Timeline horizontal scroll option</h1>
 <div id="mytimeline"></div>
 <script>
  // create groups
  var numberOfGroups = 25; 
  var groups = new vis.DataSet()
  for (var i = 0; i < numberOfGroups; i++) {
    groups.add({
      id: i,
      content: 'Truck&nbsp;' + i
    })
  }
  // create items
  var numberOfItems = 1000;
  var items = new vis.DataSet();
  var itemsPerGroup = Math.round(numberOfItems/numberOfGroups);
  for (var truck = 0; truck < numberOfGroups; truck++) {
    var date = new Date();
    for (var order = 0; order < itemsPerGroup; order++) {
      date.setHours(date.getHours() +  4 * (Math.random() < 0.2));
      var start = new Date(date);
      date.setHours(date.getHours() + 2 + Math.floor(Math.random()*4));
      var end = new Date(date);
      items.add({
        id: order + itemsPerGroup * truck,
        group: truck,
        start: start,
        end: end,
        content: 'Order ' + order
      });
    }
  }
  // specify options
  var options = {
    stack: true,
    horizontalScroll: true,
    zoomKey: 'ctrlKey',
    maxHeight: 400,
    start: new Date(),
    end: new Date(1000*60*60*24 + (new Date()).valueOf()),
    editable: true,
    margin: {
      item: 10, // minimal margin between items
      axis: 5   // minimal margin between items and the axis
    },
    orientation: 'top'
  };
  // create a Timeline
  var container = document.getElementById('mytimeline');
  timeline = new vis.Timeline(container, items, groups, options);
 </script>
 </body>
 </html>
--- a/examples/timeline/other/verticalScroll.html
+++ b/examples/timeline/other/verticalScroll.html
@ -0,0 +1,92 @@
 <html>
 <head>
  <title>Timeline | Vertical Scroll Option</title>
  <script src="../../../dist/vis.js"></script>
  <link href="../../../dist/vis.css" rel="stylesheet" type="text/css" />
  <script src="../../googleAnalytics.js"></script>
 </head>
 <body>
 <h1>Timeline vertical scroll option</h1>
 <h2>With <code>
 verticalScroll: true,
 zoomKey: 'ctrlKey'</code>
 </h2>
 <div id="mytimeline1"></div>
 <h2>With <code>
 horizontalScroll: true,
 verticalScroll: true,
 zoomKey: 'ctrlKey'</code>
 </h2>
 <div id="mytimeline2"></div>
 <script>
  // create groups
  var numberOfGroups = 25; 
  var groups = new vis.DataSet()
  for (var i = 0; i < numberOfGroups; i++) {
    groups.add({
      id: i,
      content: 'Truck&nbsp;' + i
    })
  }
  // create items
  var numberOfItems = 1000;
  var items = new vis.DataSet();
  var itemsPerGroup = Math.round(numberOfItems/numberOfGroups);
  for (var truck = 0; truck < numberOfGroups; truck++) {
    var date = new Date();
    for (var order = 0; order < itemsPerGroup; order++) {
      date.setHours(date.getHours() +  4 * (Math.random() < 0.2));
      var start = new Date(date);
      date.setHours(date.getHours() + 2 + Math.floor(Math.random()*4));
      var end = new Date(date);
      items.add({
        id: order + itemsPerGroup * truck,
        group: truck,
        start: start,
        end: end,
        content: 'Order ' + order
      });
    }
  }
  // specify options
  var options = {
    stack: true,
    verticalScroll: true,
    zoomKey: 'ctrlKey',
    maxHeight: 200,
    start: new Date(),
    end: new Date(1000*60*60*24 + (new Date()).valueOf()),
    editable: true,
    margin: {
      item: 10, // minimal margin between items
      axis: 5   // minimal margin between items and the axis
    },
    orientation: 'top'
  };
  // create a Timeline
  options1 = Object.assign({}, options)
  var container1 = document.getElementById('mytimeline1');
  timeline1 = new vis.Timeline(container1, items, groups, options1);
  options2 = Object.assign({horizontalScroll: true}, options)
  var container2 = document.getElementById('mytimeline2');
  timeline2 = new vis.Timeline(container2, items, groups, options2);
 </script>
 </body>
 </html>
--- a/lib/graph3d/Graph3d.js
+++ b/lib/graph3d/Graph3d.js
--- a/lib/graph3d/Settings.js
+++ b/lib/graph3d/Settings.js
@ -0,0 +1,436 @@
 ////////////////////////////////////////////////////////////////////////////////
 // This modules handles the options for Graph3d.
 //
 ////////////////////////////////////////////////////////////////////////////////
 var Camera  = require('./Camera');
 var Point3d = require('./Point3d');
 // enumerate the available styles
 var STYLE = {
  BAR     : 0,
  BARCOLOR: 1,
  BARSIZE : 2,
  DOT     : 3,
  DOTLINE : 4,
  DOTCOLOR: 5,
  DOTSIZE : 6,
  GRID    : 7,
  LINE    : 8,
  SURFACE : 9
 };
 // The string representations of the styles
 var STYLENAME = {
  'dot'      : STYLE.DOT,
  'dot-line' : STYLE.DOTLINE,
  'dot-color': STYLE.DOTCOLOR,
  'dot-size' : STYLE.DOTSIZE,
  'line'     : STYLE.LINE,
  'grid'     : STYLE.GRID,
  'surface'  : STYLE.SURFACE,
  'bar'      : STYLE.BAR,
  'bar-color': STYLE.BARCOLOR,
  'bar-size' : STYLE.BARSIZE
 };
 /**
 * Field names in the options hash which are of relevance to the user.
 *
 * Specifically, these are the fields which require no special handling,
 * and can be directly copied over.
 */
 var OPTIONKEYS = [
  'width',
  'height',
  'filterLabel',
  'legendLabel',
  'xLabel',
  'yLabel',
  'zLabel',
  'xValueLabel',
  'yValueLabel',
  'zValueLabel',
  'showGrid',
  'showPerspective',
  'showShadow',
  'keepAspectRatio',
  'verticalRatio',
  'dotSizeRatio',
  'showAnimationControls',
  'animationInterval',
  'animationPreload',
  'animationAutoStart',
  'axisColor',
  'gridColor',
  'xCenter',
  'yCenter'
 ];
 /**
 * Field names in the options hash which are of relevance to the user.
 *
 * Same as OPTIONKEYS, but internally these fields are stored with 
 * prefix 'default' in the name.
 */
 var PREFIXEDOPTIONKEYS = [
  'xBarWidth',
  'yBarWidth',
  'valueMin',
  'valueMax',
  'xMin',
  'xMax',
  'xStep',
  'yMin',
  'yMax',
  'yStep',
  'zMin',
  'zMax',
  'zStep'
 ];
 // Placeholder for DEFAULTS reference
 var DEFAULTS = undefined; 
 /**
 * Check if given hash is empty.
 *
 * Source: http://stackoverflow.com/a/679937
 */
 function isEmpty(obj) {
  for(var prop in obj) {
    if (obj.hasOwnProperty(prop))
      return false;
  }
  return true;
 }
 /**
 * Make first letter of parameter upper case.
 *
 * Source: http://stackoverflow.com/a/1026087
 */
 function capitalize(str) {
  if (str === undefined || str === "") {
    return str;
  }
  return str.charAt(0).toUpperCase() + str.slice(1);
 }
 /**
 * Add a prefix to a field name, taking style guide into account
 */
 function prefixFieldName(prefix, fieldName) {
  if (prefix === undefined || prefix === "") {
    return fieldName;
  }
  return prefix + capitalize(fieldName);
 }
 /**
 * Forcibly copy fields from src to dst in a controlled manner.
 *
 * A given field in dst will always be overwitten. If this field
 * is undefined or not present in src, the field in dst will 
 * be explicitly set to undefined.
 * 
 * The intention here is to be able to reset all option fields.
 * 
 * Only the fields mentioned in array 'fields' will be handled.
 *
 * @param fields array with names of fields to copy
 * @param prefix optional; prefix to use for the target fields.
 */
 function forceCopy(src, dst, fields, prefix) {
  var srcKey;
  var dstKey;
  for (var i in fields) {
    srcKey  = fields[i];
    dstKey  = prefixFieldName(prefix, srcKey);
    dst[dstKey] = src[srcKey];
  }
 }
 /**
 * Copy fields from src to dst in a safe and controlled manner.
 *
 * Only the fields mentioned in array 'fields' will be copied over,
 * and only if these are actually defined.
 *
 * @param fields array with names of fields to copy
 * @param prefix optional; prefix to use for the target fields.
 */
 function safeCopy(src, dst, fields, prefix) {
  var srcKey;
  var dstKey;
  for (var i in fields) {
    srcKey  = fields[i];
    if (src[srcKey] === undefined) continue;
    dstKey  = prefixFieldName(prefix, srcKey);
    dst[dstKey] = src[srcKey];
  }
 }
 /**
 * Initialize dst with the values in src.
 *
 * src is the hash with the default values. 
 * A reference DEFAULTS to this hash is stored locally for 
 * further handling.
 *
 * For now, dst is assumed to be a Graph3d instance.
 */
 function setDefaults(src, dst) {
  if (src === undefined || isEmpty(src)) {
    throw new Error('No DEFAULTS passed');
  }
  if (dst === undefined) {
    throw new Error('No dst passed');
  }
  // Remember defaults for future reference
  DEFAULTS = src;
  // Handle the defaults which can be simply copied over
  forceCopy(src, dst, OPTIONKEYS);
  forceCopy(src, dst, PREFIXEDOPTIONKEYS, 'default');
  // Handle the more complex ('special') fields
  setSpecialSettings(src, dst);
  // Following are internal fields, not part of the user settings
  dst.margin = 10;                  // px
  dst.showGrayBottom = false;       // TODO: this does not work correctly
  dst.showTooltip = false;
  dst.eye = new Point3d(0, 0, -1);  // TODO: set eye.z about 3/4 of the width of the window?
 }
 function setOptions(options, dst) {
  if (options === undefined) {
    return;
  }
  if (dst === undefined) {
    throw new Error('No dst passed');
  }
  if (DEFAULTS === undefined || isEmpty(DEFAULTS)) {
    throw new Error('DEFAULTS not set for module Settings');
  }
  // Handle the parameters which can be simply copied over
  safeCopy(options, dst, OPTIONKEYS);
  safeCopy(options, dst, PREFIXEDOPTIONKEYS, 'default');
  // Handle the more complex ('special') fields
  setSpecialSettings(options, dst);
 }
 /**
 * Special handling for certain parameters
 *
 * 'Special' here means: setting requires more than a simple copy
 */
 function setSpecialSettings(src, dst) {
  if (src.backgroundColor !== undefined) {
    setBackgroundColor(src.backgroundColor, dst);
  }
  setDataColor(src.dataColor, dst);
  setStyle(src.style, dst);
  setShowLegend(src.showLegend, dst);
  setCameraPosition(src.cameraPosition, dst);
  // As special fields go, this is an easy one; just a translation of the name.
  // Can't use this.tooltip directly, because that field exists internally
  if (src.tooltip !== undefined) {
    dst.showTooltip = src.tooltip;
  }
 }
 /**
 * Set the value of setting 'showLegend'
 *
 * This depends on the value of the style fields, so it must be called
 * after the style field has been initialized.
 */
 function setShowLegend(showLegend, dst) {
  if (showLegend === undefined) {
    // If the default was auto, make a choice for this field
    var isAutoByDefault = (DEFAULTS.showLegend === undefined);
    if (isAutoByDefault) {
      // these styles default to having legends
      var isLegendGraphStyle = dst.style === STYLE.DOTCOLOR
                            || dst.style === STYLE.DOTSIZE;
      dst.showLegend = isLegendGraphStyle;
    } else {
       // Leave current value as is
    }
  } else {
    dst.showLegend = showLegend;
  }
 }
 /**
 * Retrieve the style index from given styleName
 * @param {string} styleName  Style name such as 'dot', 'grid', 'dot-line'
 * @return {Number} styleNumber Enumeration value representing the style, or -1
 *                when not found
 */
 function getStyleNumberByName(styleName) {
  var number = STYLENAME[styleName];
  if (number === undefined) {
    return -1;
  }
  return number;
 }
 /**
 * Check if given number is a valid style number.
 *
 * @return true if valid, false otherwise
 */
 function checkStyleNumber(style) {
  var valid = false;
  for (var n in STYLE) {
    if (STYLE[n] === style) {
      valid = true;
      break;
    }
  }
  return valid;
 }
 function setStyle(style, dst) {
  if (style === undefined) {
    return;   // Nothing to do
  }
  var styleNumber;
  if (typeof style === 'string') {
    styleNumber = getStyleNumberByName(style);
    if (styleNumber === -1 ) {
      throw new Error('Style \'' + style + '\' is invalid');
    }
  } else {
    // Do a pedantic check on style number value
    if (!checkStyleNumber(style)) {
      throw new Error('Style \'' + style + '\' is invalid');
    }
    styleNumber = style;
  }
  dst.style = styleNumber;
 }
 /**
 * Set the background styling for the graph
 * @param {string | {fill: string, stroke: string, strokeWidth: string}} backgroundColor
 */
 function setBackgroundColor(backgroundColor, dst) {
  var fill = 'white';
  var stroke = 'gray';
  var strokeWidth = 1;
  if (typeof(backgroundColor) === 'string') {
    fill = backgroundColor;
    stroke = 'none';
    strokeWidth = 0;
  }
  else if (typeof(backgroundColor) === 'object') {
    if (backgroundColor.fill !== undefined)    fill = backgroundColor.fill;
    if (backgroundColor.stroke !== undefined)    stroke = backgroundColor.stroke;
    if (backgroundColor.strokeWidth !== undefined) strokeWidth = backgroundColor.strokeWidth;
  }
  else {
    throw new Error('Unsupported type of backgroundColor');
  }
  dst.frame.style.backgroundColor = fill;
  dst.frame.style.borderColor = stroke;
  dst.frame.style.borderWidth = strokeWidth + 'px';
  dst.frame.style.borderStyle = 'solid';
 }
 function setDataColor(dataColor, dst) {
  if (dataColor === undefined) {
    return;    // Nothing to do
  }
  if (dst.dataColor === undefined) {
    dst.dataColor = {};
  }
  if (typeof dataColor === 'string') {
    dst.dataColor.fill   = dataColor;
    dst.dataColor.stroke = dataColor;
  }
  else {
    if (dataColor.fill) {
      dst.dataColor.fill = dataColor.fill;
    }
    if (dataColor.stroke) {
      dst.dataColor.stroke = dataColor.stroke;
    }
    if (dataColor.strokeWidth !== undefined) {
      dst.dataColor.strokeWidth = dataColor.strokeWidth;
    }
  }
 }
 function setCameraPosition(cameraPosition, dst) {
  var camPos = cameraPosition;
  if (camPos === undefined) {
    return;
  }
  if (dst.camera === undefined) {
    dst.camera = new Camera();
  }
  dst.camera.setArmRotation(camPos.horizontal, camPos.vertical);
  dst.camera.setArmLength(camPos.distance);
 }
 module.exports.STYLE             = STYLE;
 module.exports.setDefaults       = setDefaults;
 module.exports.setOptions        = setOptions;
 module.exports.setCameraPosition = setCameraPosition;
--- a/lib/timeline/Core.js
+++ b/lib/timeline/Core.js
@ -82,7 +82,6 @@ Core.prototype._create = function (container) {
  this.dom.centerContainer.appendChild(this.dom.center);
  this.dom.leftContainer.appendChild(this.dom.left);
  this.dom.rightContainer.appendChild(this.dom.right);
  this.dom.centerContainer.appendChild(this.dom.shadowTop);
  this.dom.centerContainer.appendChild(this.dom.shadowBottom);
  this.dom.leftContainer.appendChild(this.dom.shadowTopLeft);
@ -90,9 +89,26 @@ Core.prototype._create = function (container) {
  this.dom.rightContainer.appendChild(this.dom.shadowTopRight);
  this.dom.rightContainer.appendChild(this.dom.shadowBottomRight);
  // size properties of each of the panels
  this.props = {
    root: {},
    background: {},
    centerContainer: {},
    leftContainer: {},
    rightContainer: {},
    center: {},
    left: {},
    right: {},
    top: {},
    bottom: {},
    border: {},
    scrollTop: 0,
    scrollTopMin: 0
  };
  this.on('rangechange', function () {
    if (this.initialDrawDone === true) {
      this._redraw(); // this allows overriding the _redraw method
      this._redraw();
    }
  }.bind(this));
  this.on('touch',       this._onTouch.bind(this));
@ -154,29 +170,61 @@ Core.prototype._create = function (container) {
  }.bind(this));
  function onMouseWheel(event) {
    if (this.isActive()) {
      this.emit('mousewheel', event);
    }
    // prevent scrolling when zoomKey defined or activated
    if (!this.options.zoomKey || event[this.options.zoomKey]) return
    // prevent scrolling vertically when horizontalScroll is true
    if (this.options.horizontalScroll) return
    var delta = 0;
    if (event.wheelDelta) { /* IE/Opera. */
      delta = event.wheelDelta / 120;
    } else if (event.detail) { /* Mozilla case. */
      // In Mozilla, sign of delta is different than in IE.
      // Also, delta is multiple of 3.
      delta = -event.detail / 3;
    }
    var current = this.props.scrollTop;
    var adjusted = current + delta * 120;
    if (this.isActive()) {
      this._setScrollTop(adjusted);
      this._redraw();
      this.emit('scroll', event);
    }
    // Prevent default actions caused by mouse wheel
    // (else the page and timeline both scroll)
    event.preventDefault();
  }
  if (this.dom.root.addEventListener) {
    // IE9, Chrome, Safari, Opera
    this.dom.root.addEventListener("mousewheel", onMouseWheel.bind(this), false);
    // Firefox
    this.dom.root.addEventListener("DOMMouseScroll", onMouseWheel.bind(this), false);
  } else {
    // IE 6/7/8
    this.dom.root.attachEvent("onmousewheel", onMouseWheel.bind(this));
  }
  function onMouseScrollSide(event) {
    var current = this.scrollTop;
    var adjusted = -current;
    if (me.isActive()) {
      me.emit('mousewheel', event);
      me._setScrollTop(adjusted);
      me._redraw();
      me.emit('scroll', event);
    }
  }
  this.dom.root.addEventListener('mousewheel', onMouseWheel);
  this.dom.root.addEventListener('DOMMouseScroll', onMouseWheel);
  // size properties of each of the panels
  this.props = {
    root: {},
    background: {},
    centerContainer: {},
    leftContainer: {},
    rightContainer: {},
    center: {},
    left: {},
    right: {},
    top: {},
    bottom: {},
    border: {},
    scrollTop: 0,
    scrollTopMin: 0
  };
  this.dom.left.parentNode.addEventListener('scroll', onMouseScrollSide);
  this.dom.right.parentNode.addEventListener('scroll', onMouseScrollSide);
  this.customTimes = [];
@ -222,17 +270,23 @@ Core.prototype.setOptions = function (options) {
    var fields = [
      'width', 'height', 'minHeight', 'maxHeight', 'autoResize',
      'start', 'end', 'clickToUse', 'dataAttributes', 'hiddenDates',
      'locale', 'locales', 'moment', 'rtl'
      'locale', 'locales', 'moment', 'rtl', 'zoomKey', 'horizontalScroll', 'verticalScroll'
    ];
    util.selectiveExtend(fields, this.options, options);
    if (this.options.rtl) {
      var contentContainer = this.dom.leftContainer;
      this.dom.leftContainer = this.dom.rightContainer;
      this.dom.rightContainer = contentContainer;
      this.dom.container.style.direction = "rtl";
      this.dom.backgroundVertical.className = 'vis-panel vis-background vis-vertical-rtl';    }
      this.dom.backgroundVertical.className = 'vis-panel vis-background vis-vertical-rtl';    
    }
    if (this.options.verticalScroll) {
      if (this.options.rtl) {
        this.dom.rightContainer.className = 'vis-panel vis-right vis-vertical-scroll';
      } else {
        this.dom.leftContainer.className = 'vis-panel vis-left vis-vertical-scroll';
      }
    }
    this.options.orientation = {item:undefined,axis:undefined};
    if ('orientation' in options) {
@ -705,9 +759,25 @@ Core.prototype._redraw = function() {
  // calculate the widths of the panels
  props.root.width = dom.root.offsetWidth;
  props.background.width = props.root.width - borderRootWidth;
  props.left.width = dom.leftContainer.clientWidth   || -props.border.left;
  if (!this.initialDrawDone) {
    props.scrollbarWidth = util.getScrollBarWidth();
  }
  if (this.options.verticalScroll) {
    if (this.options.rtl) {
      props.left.width = dom.leftContainer.clientWidth || -props.border.left;
      props.right.width = dom.rightContainer.clientWidth + props.scrollbarWidth || -props.border.right;
    } else {
      props.left.width = dom.leftContainer.clientWidth + props.scrollbarWidth || -props.border.left;
      props.right.width = dom.rightContainer.clientWidth || -props.border.right;
    }
  } else {
    props.left.width = dom.leftContainer.clientWidth  || -props.border.left;
    props.right.width = dom.rightContainer.clientWidth || -props.border.right;
  }
  props.leftContainer.width = props.left.width;
  props.right.width = dom.rightContainer.clientWidth || -props.border.right;
  props.rightContainer.width = props.right.width;
  var centerWidth = props.root.width - props.left.width - props.right.width - borderRootWidth;
  props.center.width          = centerWidth;
@ -761,10 +831,8 @@ Core.prototype._redraw = function() {
  dom.center.style.left = '0';
  dom.center.style.top  = offset + 'px';
  dom.left.style.left   = '0';
  dom.left.style.top    = offset + 'px';
  dom.right.style.left  = '0';
  dom.right.style.top   = offset + 'px';
  // show shadows when vertical scrolling is available
  var visibilityTop = this.props.scrollTop == 0 ? 'hidden' : '';
  var visibilityBottom = this.props.scrollTop == this.props.scrollTopMin ? 'hidden' : '';
@ -775,6 +843,18 @@ Core.prototype._redraw = function() {
  dom.shadowTopRight.style.visibility     = visibilityTop;
  dom.shadowBottomRight.style.visibility  = visibilityBottom;
  if (this.options.verticalScroll) {
    this.dom.shadowTopRight.style.visibility     = "hidden";
    this.dom.shadowBottomRight.style.visibility  = "hidden";
    this.dom.shadowTopLeft.style.visibility      = "hidden";
    this.dom.shadowBottomLeft.style.visibility   = "hidden";
    document.getElementsByClassName('vis-left')[0].scrollTop = -offset;
    document.getElementsByClassName('vis-right')[0].scrollTop = -offset;
  } else {
    dom.left.style.top    = offset + 'px';
    dom.right.style.top   = offset + 'px';
  }
  // enable/disable vertical panning
  var contentsOverflow = this.props.center.height > this.props.centerContainer.height;
  this.hammer.get('pan').set({
@ -797,6 +877,7 @@ Core.prototype._redraw = function() {
  } else {
    this.redrawCount = 0;
  }
  this.initialDrawDone = true;
  //Emit public 'changed' event for UI updates, see issue #1592
--- a/lib/timeline/Range.js
+++ b/lib/timeline/Range.js
@ -81,7 +81,7 @@ Range.prototype.setOptions = function (options) {
    // copy the options that we know
    var fields = [
      'direction', 'min', 'max', 'zoomMin', 'zoomMax', 'moveable', 'zoomable',
      'moment', 'activate', 'hiddenDates', 'zoomKey', 'rtl'
      'moment', 'activate', 'hiddenDates', 'zoomKey', 'rtl', 'horizontalScroll'
    ];
    util.selectiveExtend(fields, this.options, options);
@ -483,15 +483,10 @@ Range.prototype._onDragEnd = function (event) {
 * @private
 */
 Range.prototype._onMouseWheel = function(event) {
  // only allow zooming when configured as zoomable and moveable
  if (!(this.options.zoomable && this.options.moveable)) return;
  // only zoom when the mouse is inside the current range
  if (!this._isInsideRange(event)) return;
  // Prevent default actions caused by mouse wheel
  // (else the page and timeline both zoom and scroll)
  event.preventDefault();
  // only zoom when the according key is pressed and the zoomKey option is set
  if (this.options.zoomKey && !event[this.options.zoomKey]) return;
  // retrieve delta
  var delta = 0;
  if (event.wheelDelta) { /* IE/Opera. */
@ -502,6 +497,27 @@ Range.prototype._onMouseWheel = function(event) {
    delta = -event.detail / 3;
  }
  // don't allow zoom when the according key is pressed and the zoomKey option or not zoomable but movable
  if ((this.options.zoomKey && !event[this.options.zoomKey] && this.options.zoomable) 
    || (!this.options.zoomable && this.options.moveable)) {
    if (this.options.horizontalScroll) {
      // calculate a single scroll jump relative to the range scale
      var diff = delta * (this.end - this.start) / 20;
      // calculate new start and end
      var newStart = this.start - diff;
      var newEnd = this.end - diff;
      this.setRange(newStart, newEnd);
    }
    return;
  }
  // only allow zooming when configured as zoomable and moveable
  if (!(this.options.zoomable && this.options.moveable)) return;
  // only zoom when the mouse is inside the current range
  if (!this._isInsideRange(event)) return;
  // If delta is nonzero, handle it.
  // Basically, delta is now positive if wheel was scrolled up,
  // and negative, if wheel was scrolled down.
@ -524,10 +540,6 @@ Range.prototype._onMouseWheel = function(event) {
    this.zoom(scale, pointerDate, delta);
  }
  // Prevent default actions caused by mouse wheel
  // (else the page and timeline both zoom and scroll)
  event.preventDefault();
 };
 /**
--- a/lib/timeline/Timeline.js
+++ b/lib/timeline/Timeline.js
@ -52,7 +52,6 @@ function Timeline (container, items, groups, options) {
      axis: 'bottom',   // axis orientation: 'bottom', 'top', or 'both'
      item: 'bottom'    // not relevant
    },
    rtl: false,
    moment: moment,
    width: null,
@ -61,6 +60,7 @@ function Timeline (container, items, groups, options) {
    minHeight: null
  };
  this.options = util.deepExtend({}, this.defaultOptions);
  this.options.rtl = options.rtl;
  // Create the DOM, props, and emitter
  this._create(container);
--- a/lib/timeline/component/ItemSet.js
+++ b/lib/timeline/component/ItemSet.js
@ -27,7 +27,6 @@ var BACKGROUND = '__background__'; // reserved group id for background items wit
 function ItemSet(body, options) {
  this.body = body;
  this.defaultOptions = {
    rtl: false,
    type: null,  // 'box', 'point', 'range', 'background'
    orientation: {
      item: 'bottom'   // item orientation: 'top' or 'bottom'
@ -96,7 +95,8 @@ function ItemSet(body, options) {
  // options is shared by this ItemSet and all its items
  this.options = util.extend({}, this.defaultOptions);
  this.options.rtl = options.rtl;
  // options for getting items from the DataSet with the correct type
  this.itemOptions = {
    type: {start: 'Date', end: 'Date'}
@ -230,7 +230,12 @@ ItemSet.prototype._create = function(){
  // add item on doubletap
  this.hammer.on('doubletap', this._onAddItem.bind(this));
  this.groupHammer = new Hammer(this.body.dom.leftContainer);
  if (this.options.rtl) {
    this.groupHammer = new Hammer(this.body.dom.rightContainer);
  } else {
    this.groupHammer = new Hammer(this.body.dom.leftContainer);
  }
  this.groupHammer.on('panstart', this._onGroupDragStart.bind(this));
  this.groupHammer.on('panmove',  this._onGroupDrag.bind(this));
@ -451,7 +456,11 @@ ItemSet.prototype.show = function() {
  // show labelset containing labels
  if (!this.dom.labelSet.parentNode) {
    this.body.dom.left.appendChild(this.dom.labelSet);
    if (this.options.rtl) {
      this.body.dom.right.appendChild(this.dom.labelSet);
    } else {
      this.body.dom.left.appendChild(this.dom.labelSet);
    }
  }
 };
--- a/lib/timeline/component/css/panel.css
+++ b/lib/timeline/component/css/panel.css
@ -1,4 +1,3 @@
 .vis-panel {
  position: absolute;
@ -24,6 +23,28 @@
  overflow: hidden;
 }
 .vis-left.vis-panel.vis-vertical-scroll, .vis-right.vis-panel.vis-vertical-scroll {
  height: 100%;
  overflow-x: hidden;
  overflow-y: scroll;
 } 
 .vis-left.vis-panel.vis-vertical-scroll {
  direction: rtl;
 }
 .vis-left.vis-panel.vis-vertical-scroll .vis-content {
  direction: ltr;
 }
 .vis-right.vis-panel.vis-vertical-scroll {
  direction: ltr;
 }
 .vis-right.vis-panel.vis-vertical-scroll .vis-content {
  direction: rtl;
 }
 .vis-panel.vis-center,
 .vis-panel.vis-top,
 .vis-panel.vis-bottom {
--- a/lib/timeline/optionsTimeline.js
+++ b/lib/timeline/optionsTimeline.js
@ -26,6 +26,8 @@ let allOptions = {
  //globals :
  align: {string},
  rtl: {boolean, 'undefined': 'undefined'},
  verticalScroll: {boolean, 'undefined': 'undefined'},
  horizontalScroll: {boolean, 'undefined': 'undefined'},
  autoResize: {boolean},
  clickToUse: {boolean},
  dataAttributes: {string, array},
--- a/lib/util.js
+++ b/lib/util.js
@ -1452,3 +1452,29 @@ exports.easingFunctions = {
    return t < .5 ? 16 * t * t * t * t * t : 1 + 16 * (--t) * t * t * t * t
  }
 };
 exports.getScrollBarWidth = function () {
  var inner = document.createElement('p');
  inner.style.width = "100%";
  inner.style.height = "200px";
  var outer = document.createElement('div');
  outer.style.position = "absolute";
  outer.style.top = "0px";
  outer.style.left = "0px";
  outer.style.visibility = "hidden";
  outer.style.width = "200px";
  outer.style.height = "150px";
  outer.style.overflow = "hidden";
  outer.appendChild (inner);
  document.body.appendChild (outer);
  var w1 = inner.offsetWidth;
  outer.style.overflow = 'scroll';
  var w2 = inner.offsetWidth;
  if (w1 == w2) w2 = outer.clientWidth;
  document.body.removeChild (outer);
  return (w1 - w2);
 };