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769 lines
23 KiB
769 lines
23 KiB
var util = require('../../util');
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var stack = require('../Stack');
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/**
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* @param {number | string} groupId
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* @param {Object} data
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* @param {ItemSet} itemSet
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* @constructor Group
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*/
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function Group (groupId, data, itemSet) {
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this.groupId = groupId;
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this.subgroups = {};
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this.subgroupIndex = 0;
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this.subgroupOrderer = data && data.subgroupOrder;
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this.itemSet = itemSet;
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this.isVisible = null;
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this.stackDirty = true; // if true, items will be restacked on next redraw
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if (data && data.nestedGroups) {
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this.nestedGroups = data.nestedGroups;
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if (data.showNested == false) {
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this.showNested = false;
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} else {
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this.showNested = true;
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}
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}
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this.nestedInGroup = null;
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this.dom = {};
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this.props = {
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label: {
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width: 0,
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height: 0
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}
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};
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this.className = null;
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this.items = {}; // items filtered by groupId of this group
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this.visibleItems = []; // items currently visible in window
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this.itemsInRange = []; // items currently in range
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this.orderedItems = {
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byStart: [],
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byEnd: []
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};
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this.checkRangedItems = false; // needed to refresh the ranged items if the window is programatically changed with NO overlap.
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var me = this;
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this.itemSet.body.emitter.on("checkRangedItems", function () {
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me.checkRangedItems = true;
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})
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this._create();
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this.setData(data);
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}
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/**
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* Create DOM elements for the group
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* @private
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*/
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Group.prototype._create = function() {
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var label = document.createElement('div');
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if (this.itemSet.options.groupEditable.order) {
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label.className = 'vis-label draggable';
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} else {
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label.className = 'vis-label';
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}
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this.dom.label = label;
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var inner = document.createElement('div');
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inner.className = 'vis-inner';
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label.appendChild(inner);
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this.dom.inner = inner;
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var foreground = document.createElement('div');
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foreground.className = 'vis-group';
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foreground['timeline-group'] = this;
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this.dom.foreground = foreground;
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this.dom.background = document.createElement('div');
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this.dom.background.className = 'vis-group';
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this.dom.axis = document.createElement('div');
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this.dom.axis.className = 'vis-group';
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// create a hidden marker to detect when the Timelines container is attached
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// to the DOM, or the style of a parent of the Timeline is changed from
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// display:none is changed to visible.
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this.dom.marker = document.createElement('div');
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this.dom.marker.style.visibility = 'hidden';
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this.dom.marker.style.position = 'absolute';
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this.dom.marker.innerHTML = '';
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this.dom.background.appendChild(this.dom.marker);
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};
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/**
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* Set the group data for this group
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* @param {Object} data Group data, can contain properties content and className
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*/
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Group.prototype.setData = function(data) {
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// update contents
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var content;
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var templateFunction;
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if (this.itemSet.options && this.itemSet.options.groupTemplate) {
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templateFunction = this.itemSet.options.groupTemplate.bind(this);
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content = templateFunction(data, this.dom.inner);
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} else {
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content = data && data.content;
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}
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if (content instanceof Element) {
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this.dom.inner.appendChild(content);
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while (this.dom.inner.firstChild) {
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this.dom.inner.removeChild(this.dom.inner.firstChild);
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}
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this.dom.inner.appendChild(content);
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} else if (content instanceof Object) {
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templateFunction(data, this.dom.inner);
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} else if (content !== undefined && content !== null) {
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this.dom.inner.innerHTML = content;
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} else {
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this.dom.inner.innerHTML = this.groupId || ''; // groupId can be null
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}
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// update title
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this.dom.label.title = data && data.title || '';
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if (!this.dom.inner.firstChild) {
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util.addClassName(this.dom.inner, 'vis-hidden');
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}
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else {
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util.removeClassName(this.dom.inner, 'vis-hidden');
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}
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if (data && data.nestedGroups) {
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if (!this.nestedGroups || this.nestedGroups != data.nestedGroups) {
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this.nestedGroups = data.nestedGroups;
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}
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if (data.showNested !== undefined || this.showNested === undefined) {
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if (data.showNested == false) {
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this.showNested = false;
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} else {
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this.showNested = true;
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}
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}
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util.addClassName(this.dom.label, 'vis-nesting-group');
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var collapsedDirClassName = this.itemSet.options.rtl ? 'collapsed-rtl' : 'collapsed'
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if (this.showNested) {
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util.removeClassName(this.dom.label, collapsedDirClassName);
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util.addClassName(this.dom.label, 'expanded');
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} else {
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util.removeClassName(this.dom.label, 'expanded');
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util.addClassName(this.dom.label, collapsedDirClassName);
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}
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} else if (this.nestedGroups) {
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this.nestedGroups = null;
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collapsedDirClassName = this.itemSet.options.rtl ? 'collapsed-rtl' : 'collapsed'
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util.removeClassName(this.dom.label, collapsedDirClassName);
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util.removeClassName(this.dom.label, 'expanded');
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util.removeClassName(this.dom.label, 'vis-nesting-group');
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}
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if (data && data.nestedInGroup) {
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util.addClassName(this.dom.label, 'vis-nested-group');
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if (this.itemSet.options && this.itemSet.options.rtl) {
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this.dom.inner.style.paddingRight = '30px';
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} else {
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this.dom.inner.style.paddingLeft = '30px';
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}
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}
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// update className
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var className = data && data.className || null;
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if (className != this.className) {
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if (this.className) {
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util.removeClassName(this.dom.label, this.className);
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util.removeClassName(this.dom.foreground, this.className);
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util.removeClassName(this.dom.background, this.className);
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util.removeClassName(this.dom.axis, this.className);
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}
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util.addClassName(this.dom.label, className);
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util.addClassName(this.dom.foreground, className);
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util.addClassName(this.dom.background, className);
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util.addClassName(this.dom.axis, className);
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this.className = className;
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}
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// update style
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if (this.style) {
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util.removeCssText(this.dom.label, this.style);
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this.style = null;
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}
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if (data && data.style) {
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util.addCssText(this.dom.label, data.style);
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this.style = data.style;
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}
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};
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/**
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* Get the width of the group label
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* @return {number} width
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*/
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Group.prototype.getLabelWidth = function() {
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return this.props.label.width;
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};
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/**
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* Repaint this group
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* @param {{start: number, end: number}} range
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* @param {{item: {horizontal: number, vertical: number}, axis: number}} margin
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* @param {boolean} [forceRestack=false] Force restacking of all items
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* @return {boolean} Returns true if the group is resized
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*/
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Group.prototype.redraw = function(range, margin, forceRestack) {
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var resized = false;
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// force recalculation of the height of the items when the marker height changed
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// (due to the Timeline being attached to the DOM or changed from display:none to visible)
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var markerHeight = this.dom.marker.clientHeight;
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if (markerHeight != this.lastMarkerHeight) {
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this.lastMarkerHeight = markerHeight;
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util.forEach(this.items, function (item) {
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item.dirty = true;
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if (item.displayed) item.redraw();
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});
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forceRestack = true;
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}
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// recalculate the height of the subgroups
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this._calculateSubGroupHeights(margin);
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// calculate actual size and position
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var foreground = this.dom.foreground;
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this.top = foreground.offsetTop;
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this.right = foreground.offsetLeft;
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this.width = foreground.offsetWidth;
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var lastIsVisible = this.isVisible;
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this.isVisible = this._isGroupVisible(range, margin);
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var restack = forceRestack || this.stackDirty || (this.isVisible && !lastIsVisible);
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this._updateSubgroupsSizes();
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// if restacking, reposition visible items vertically
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if(restack) {
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if (typeof this.itemSet.options.order === 'function') {
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// a custom order function
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// brute force restack of all items
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// show all items
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var me = this;
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var limitSize = false;
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util.forEach(this.items, function (item) {
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if (!item.dom) { // If this item has never been displayed then the dom property will not be defined, this means we need to measure the size
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item.redraw();
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me.visibleItems.push(item);
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}
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item.repositionX(limitSize);
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});
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// order all items and force a restacking
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var customOrderedItems = this.orderedItems.byStart.slice().sort(function (a, b) {
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return me.itemSet.options.order(a.data, b.data);
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});
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stack.stack(customOrderedItems, margin, true /* restack=true */);
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this.visibleItems = this._updateItemsInRange(this.orderedItems, this.visibleItems, range);
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}
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else {
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// no custom order function, lazy stacking
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this.visibleItems = this._updateItemsInRange(this.orderedItems, this.visibleItems, range);
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if (this.itemSet.options.stack) { // TODO: ugly way to access options...
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stack.stack(this.visibleItems, margin, true /* restack=true */);
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}
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else { // no stacking
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stack.nostack(this.visibleItems, margin, this.subgroups, this.itemSet.options.stackSubgroups);
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}
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}
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this.stackDirty = false;
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}
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// recalculate the height of the group
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var height = this._calculateHeight(margin);
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// calculate actual size and position
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foreground = this.dom.foreground;
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this.top = foreground.offsetTop;
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this.right = foreground.offsetLeft;
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this.width = foreground.offsetWidth;
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resized = util.updateProperty(this, 'height', height) || resized;
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// recalculate size of label
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resized = util.updateProperty(this.props.label, 'width', this.dom.inner.clientWidth) || resized;
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resized = util.updateProperty(this.props.label, 'height', this.dom.inner.clientHeight) || resized;
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// apply new height
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this.dom.background.style.height = height + 'px';
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this.dom.foreground.style.height = height + 'px';
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this.dom.label.style.height = height + 'px';
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// update vertical position of items after they are re-stacked and the height of the group is calculated
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for (var i = 0, ii = this.visibleItems.length; i < ii; i++) {
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var item = this.visibleItems[i];
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item.repositionY(margin);
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if (!this.isVisible && this.groupId != "__background__") {
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if (item.displayed) item.hide();
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}
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}
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if (!this.isVisible && this.height) {
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return resized = false;
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}
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return resized;
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};
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/**
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* recalculate the height of the subgroups
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*
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* @param {{item: vis.Item}} margin
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* @private
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*/
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Group.prototype._calculateSubGroupHeights = function (margin) {
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if (Object.keys(this.subgroups).length > 0) {
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var me = this;
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this.resetSubgroups();
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util.forEach(this.visibleItems, function (item) {
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if (item.data.subgroup !== undefined) {
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me.subgroups[item.data.subgroup].height = Math.max(me.subgroups[item.data.subgroup].height, item.height + margin.item.vertical);
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me.subgroups[item.data.subgroup].visible = true;
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}
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});
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}
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};
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/**
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* check if group is visible
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*
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* @param {vis.Range} range
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* @param {{axis: vis.DataAxis}} margin
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* @returns {boolean} is visible
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* @private
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*/
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Group.prototype._isGroupVisible = function (range, margin) {
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return (this.top <= range.body.domProps.centerContainer.height - range.body.domProps.scrollTop + margin.axis)
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&& (this.top + this.height + margin.axis >= - range.body.domProps.scrollTop);
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};
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/**
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* recalculate the height of the group
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* @param {{item: {horizontal: number, vertical: number}, axis: number}} margin
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* @returns {number} Returns the height
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* @private
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*/
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Group.prototype._calculateHeight = function (margin) {
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// recalculate the height of the group
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var height;
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var itemsInRange = this.visibleItems;
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if (itemsInRange.length > 0) {
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var min = itemsInRange[0].top;
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var max = itemsInRange[0].top + itemsInRange[0].height;
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util.forEach(itemsInRange, function (item) {
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min = Math.min(min, item.top);
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max = Math.max(max, (item.top + item.height));
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});
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if (min > margin.axis) {
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// there is an empty gap between the lowest item and the axis
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var offset = min - margin.axis;
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max -= offset;
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util.forEach(itemsInRange, function (item) {
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item.top -= offset;
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});
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}
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height = max + margin.item.vertical / 2;
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}
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else {
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height = 0;
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}
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height = Math.max(height, this.props.label.height);
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return height;
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};
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/**
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* Show this group: attach to the DOM
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*/
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Group.prototype.show = function() {
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if (!this.dom.label.parentNode) {
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this.itemSet.dom.labelSet.appendChild(this.dom.label);
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}
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if (!this.dom.foreground.parentNode) {
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this.itemSet.dom.foreground.appendChild(this.dom.foreground);
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}
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if (!this.dom.background.parentNode) {
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this.itemSet.dom.background.appendChild(this.dom.background);
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}
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if (!this.dom.axis.parentNode) {
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this.itemSet.dom.axis.appendChild(this.dom.axis);
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}
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};
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/**
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* Hide this group: remove from the DOM
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*/
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Group.prototype.hide = function() {
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var label = this.dom.label;
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if (label.parentNode) {
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label.parentNode.removeChild(label);
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}
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var foreground = this.dom.foreground;
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if (foreground.parentNode) {
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foreground.parentNode.removeChild(foreground);
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}
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var background = this.dom.background;
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if (background.parentNode) {
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background.parentNode.removeChild(background);
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}
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var axis = this.dom.axis;
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if (axis.parentNode) {
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axis.parentNode.removeChild(axis);
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}
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};
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/**
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* Add an item to the group
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* @param {Item} item
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*/
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Group.prototype.add = function(item) {
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this.items[item.id] = item;
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item.setParent(this);
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this.stackDirty = true;
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// add to
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if (item.data.subgroup !== undefined) {
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this._addToSubgroup(item);
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this.orderSubgroups();
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}
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if (this.visibleItems.indexOf(item) == -1) {
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var range = this.itemSet.body.range; // TODO: not nice accessing the range like this
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this._checkIfVisible(item, this.visibleItems, range);
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}
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};
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Group.prototype._addToSubgroup = function(item, subgroupId) {
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subgroupId = subgroupId || item.data.subgroup;
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if (subgroupId != undefined && this.subgroups[subgroupId] === undefined) {
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this.subgroups[subgroupId] = {
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height:0,
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top: 0,
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start: item.data.start,
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end: item.data.end,
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visible: false,
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index:this.subgroupIndex,
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items: []
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};
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this.subgroupIndex++;
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}
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if (new Date(item.data.start) < new Date(this.subgroups[subgroupId].start)) {
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this.subgroups[subgroupId].start = item.data.start;
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}
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if (new Date(item.data.end) > new Date(this.subgroups[subgroupId].end)) {
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this.subgroups[subgroupId].end = item.data.end;
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}
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this.subgroups[subgroupId].items.push(item);
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};
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Group.prototype._updateSubgroupsSizes = function () {
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var me = this;
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if (me.subgroups) {
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for (var subgroup in me.subgroups) {
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var newStart = me.subgroups[subgroup].items[0].data.start;
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var newEnd = me.subgroups[subgroup].items[0].data.end - 1;
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me.subgroups[subgroup].items.forEach(function(item) {
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if (new Date(item.data.start) < new Date(newStart)) {
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newStart = item.data.start;
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}
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if (new Date(item.data.end) > new Date(newEnd)) {
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newEnd = item.data.end;
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}
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})
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me.subgroups[subgroup].start = newStart;
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me.subgroups[subgroup].end = new Date(newEnd - 1) // -1 to compensate for colliding end to start subgroups;
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}
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}
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}
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Group.prototype.orderSubgroups = function() {
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if (this.subgroupOrderer !== undefined) {
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var sortArray = [];
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var subgroup;
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if (typeof this.subgroupOrderer == 'string') {
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for (subgroup in this.subgroups) {
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sortArray.push({subgroup: subgroup, sortField: this.subgroups[subgroup].items[0].data[this.subgroupOrderer]})
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}
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sortArray.sort(function (a, b) {
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return a.sortField - b.sortField;
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})
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}
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else if (typeof this.subgroupOrderer == 'function') {
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for (subgroup in this.subgroups) {
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sortArray.push(this.subgroups[subgroup].items[0].data);
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}
|
|
sortArray.sort(this.subgroupOrderer);
|
|
}
|
|
|
|
if (sortArray.length > 0) {
|
|
for (var i = 0; i < sortArray.length; i++) {
|
|
this.subgroups[sortArray[i].subgroup].index = i;
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
Group.prototype.resetSubgroups = function() {
|
|
for (var subgroup in this.subgroups) {
|
|
if (this.subgroups.hasOwnProperty(subgroup)) {
|
|
this.subgroups[subgroup].visible = false;
|
|
this.subgroups[subgroup].height = 0;
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Remove an item from the group
|
|
* @param {Item} item
|
|
*/
|
|
Group.prototype.remove = function(item) {
|
|
delete this.items[item.id];
|
|
item.setParent(null);
|
|
this.stackDirty = true;
|
|
|
|
// remove from visible items
|
|
var index = this.visibleItems.indexOf(item);
|
|
if (index != -1) this.visibleItems.splice(index, 1);
|
|
|
|
if(item.data.subgroup !== undefined){
|
|
this._removeFromSubgroup(item);
|
|
this.orderSubgroups();
|
|
}
|
|
};
|
|
|
|
Group.prototype._removeFromSubgroup = function(item, subgroupId) {
|
|
subgroupId = subgroupId || item.data.subgroup;
|
|
if (subgroupId != undefined) {
|
|
var subgroup = this.subgroups[subgroupId];
|
|
if (subgroup){
|
|
var itemIndex = subgroup.items.indexOf(item);
|
|
// Check the item is actually in this subgroup. How should items not in the group be handled?
|
|
if (itemIndex >= 0) {
|
|
subgroup.items.splice(itemIndex,1);
|
|
if (!subgroup.items.length){
|
|
delete this.subgroups[subgroupId];
|
|
} else {
|
|
this._updateSubgroupsSizes();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Remove an item from the corresponding DataSet
|
|
* @param {Item} item
|
|
*/
|
|
Group.prototype.removeFromDataSet = function(item) {
|
|
this.itemSet.removeItem(item.id);
|
|
};
|
|
|
|
|
|
/**
|
|
* Reorder the items
|
|
*/
|
|
Group.prototype.order = function() {
|
|
var array = util.toArray(this.items);
|
|
var startArray = [];
|
|
var endArray = [];
|
|
|
|
for (var i = 0; i < array.length; i++) {
|
|
if (array[i].data.end !== undefined) {
|
|
endArray.push(array[i]);
|
|
}
|
|
startArray.push(array[i]);
|
|
}
|
|
this.orderedItems = {
|
|
byStart: startArray,
|
|
byEnd: endArray
|
|
};
|
|
|
|
stack.orderByStart(this.orderedItems.byStart);
|
|
stack.orderByEnd(this.orderedItems.byEnd);
|
|
};
|
|
|
|
|
|
/**
|
|
* Update the visible items
|
|
* @param {{byStart: Item[], byEnd: Item[]}} orderedItems All items ordered by start date and by end date
|
|
* @param {Item[]} oldVisibleItems The previously visible items.
|
|
* @param {{start: number, end: number}} range Visible range
|
|
* @return {Item[]} visibleItems The new visible items.
|
|
* @private
|
|
*/
|
|
Group.prototype._updateItemsInRange = function(orderedItems, oldVisibleItems, range) {
|
|
var visibleItems = [];
|
|
var visibleItemsLookup = {}; // we keep this to quickly look up if an item already exists in the list without using indexOf on visibleItems
|
|
|
|
var interval = (range.end - range.start) / 4;
|
|
var lowerBound = range.start - interval;
|
|
var upperBound = range.end + interval;
|
|
|
|
// this function is used to do the binary search.
|
|
var searchFunction = function (value) {
|
|
if (value < lowerBound) {return -1;}
|
|
else if (value <= upperBound) {return 0;}
|
|
else {return 1;}
|
|
};
|
|
|
|
// first check if the items that were in view previously are still in view.
|
|
// IMPORTANT: this handles the case for the items with startdate before the window and enddate after the window!
|
|
// also cleans up invisible items.
|
|
if (oldVisibleItems.length > 0) {
|
|
for (var i = 0; i < oldVisibleItems.length; i++) {
|
|
this._checkIfVisibleWithReference(oldVisibleItems[i], visibleItems, visibleItemsLookup, range);
|
|
}
|
|
}
|
|
|
|
// we do a binary search for the items that have only start values.
|
|
var initialPosByStart = util.binarySearchCustom(orderedItems.byStart, searchFunction, 'data','start');
|
|
|
|
// trace the visible items from the inital start pos both ways until an invisible item is found, we only look at the start values.
|
|
this._traceVisible(initialPosByStart, orderedItems.byStart, visibleItems, visibleItemsLookup, function (item) {
|
|
return (item.data.start < lowerBound || item.data.start > upperBound);
|
|
});
|
|
|
|
// if the window has changed programmatically without overlapping the old window, the ranged items with start < lowerBound and end > upperbound are not shown.
|
|
// We therefore have to brute force check all items in the byEnd list
|
|
if (this.checkRangedItems == true) {
|
|
this.checkRangedItems = false;
|
|
for (i = 0; i < orderedItems.byEnd.length; i++) {
|
|
this._checkIfVisibleWithReference(orderedItems.byEnd[i], visibleItems, visibleItemsLookup, range);
|
|
}
|
|
}
|
|
else {
|
|
// we do a binary search for the items that have defined end times.
|
|
var initialPosByEnd = util.binarySearchCustom(orderedItems.byEnd, searchFunction, 'data','end');
|
|
|
|
// trace the visible items from the inital start pos both ways until an invisible item is found, we only look at the end values.
|
|
this._traceVisible(initialPosByEnd, orderedItems.byEnd, visibleItems, visibleItemsLookup, function (item) {
|
|
return (item.data.end < lowerBound || item.data.end > upperBound);
|
|
});
|
|
}
|
|
|
|
// finally, we reposition all the visible items.
|
|
for (i = 0; i < visibleItems.length; i++) {
|
|
var item = visibleItems[i];
|
|
if (!item.displayed) item.show();
|
|
// reposition item horizontally
|
|
item.repositionX();
|
|
}
|
|
|
|
return visibleItems;
|
|
};
|
|
|
|
Group.prototype._traceVisible = function (initialPos, items, visibleItems, visibleItemsLookup, breakCondition) {
|
|
if (initialPos != -1) {
|
|
var i, item;
|
|
for (i = initialPos; i >= 0; i--) {
|
|
item = items[i];
|
|
if (breakCondition(item)) {
|
|
break;
|
|
}
|
|
else {
|
|
if (visibleItemsLookup[item.id] === undefined) {
|
|
visibleItemsLookup[item.id] = true;
|
|
visibleItems.push(item);
|
|
}
|
|
}
|
|
}
|
|
|
|
for (i = initialPos + 1; i < items.length; i++) {
|
|
item = items[i];
|
|
if (breakCondition(item)) {
|
|
break;
|
|
}
|
|
else {
|
|
if (visibleItemsLookup[item.id] === undefined) {
|
|
visibleItemsLookup[item.id] = true;
|
|
visibleItems.push(item);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* this function is very similar to the _checkIfInvisible() but it does not
|
|
* return booleans, hides the item if it should not be seen and always adds to
|
|
* the visibleItems.
|
|
* this one is for brute forcing and hiding.
|
|
*
|
|
* @param {Item} item
|
|
* @param {Array} visibleItems
|
|
* @param {{start:number, end:number}} range
|
|
* @private
|
|
*/
|
|
Group.prototype._checkIfVisible = function(item, visibleItems, range) {
|
|
if (item.isVisible(range)) {
|
|
if (!item.displayed) item.show();
|
|
// reposition item horizontally
|
|
item.repositionX();
|
|
visibleItems.push(item);
|
|
}
|
|
else {
|
|
if (item.displayed) item.hide();
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* this function is very similar to the _checkIfInvisible() but it does not
|
|
* return booleans, hides the item if it should not be seen and always adds to
|
|
* the visibleItems.
|
|
* this one is for brute forcing and hiding.
|
|
*
|
|
* @param {Item} item
|
|
* @param {Array.<vis.Item>} visibleItems
|
|
* @param {Object<number, boolean>} visibleItemsLookup
|
|
* @param {{start:number, end:number}} range
|
|
* @private
|
|
*/
|
|
Group.prototype._checkIfVisibleWithReference = function(item, visibleItems, visibleItemsLookup, range) {
|
|
if (item.isVisible(range)) {
|
|
if (visibleItemsLookup[item.id] === undefined) {
|
|
visibleItemsLookup[item.id] = true;
|
|
visibleItems.push(item);
|
|
}
|
|
}
|
|
else {
|
|
if (item.displayed) item.hide();
|
|
}
|
|
};
|
|
|
|
Group.prototype.changeSubgroup = function(item, oldSubgroup, newSubgroup) {
|
|
this._removeFromSubgroup(item, oldSubgroup);
|
|
this._addToSubgroup(item, newSubgroup);
|
|
this.orderSubgroups();
|
|
};
|
|
|
|
module.exports = Group;
|