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263 lines
6.8 KiB
263 lines
6.8 KiB
/**
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* @constructor ItemRange
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* @extends Item
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* @param {Object} data Object containing parameters start, end
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* content, className.
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* @param {Object} [options] Options to set initial property values
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* @param {Object} [defaultOptions] default options
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* // TODO: describe available options
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*/
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function ItemRange (data, options, defaultOptions) {
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this.props = {
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content: {
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width: 0
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}
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};
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// validate data
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if (data) {
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if (data.start == undefined) {
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throw new Error('Property "start" missing in item ' + data.id);
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}
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if (data.end == undefined) {
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throw new Error('Property "end" missing in item ' + data.id);
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}
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}
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Item.call(this, data, options, defaultOptions);
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}
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ItemRange.prototype = new Item (null);
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ItemRange.prototype.baseClassName = 'item range';
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/**
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* Check whether this item is visible inside given range
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* @returns {{start: Number, end: Number}} range with a timestamp for start and end
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* @returns {boolean} True if visible
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*/
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ItemRange.prototype.isVisible = function isVisible (range) {
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// determine visibility
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return (this.data.start < range.end) && (this.data.end > range.start);
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};
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/**
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* Repaint the item
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*/
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ItemRange.prototype.redraw = function redraw() {
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var dom = this.dom;
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if (!dom) {
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// create DOM
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this.dom = {};
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dom = this.dom;
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// background box
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dom.box = document.createElement('div');
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// className is updated in redraw()
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// contents box
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dom.content = document.createElement('div');
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dom.content.className = 'content';
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dom.box.appendChild(dom.content);
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// attach this item as attribute
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dom.box['timeline-item'] = this;
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}
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// append DOM to parent DOM
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if (!this.parent) {
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throw new Error('Cannot redraw item: no parent attached');
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}
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if (!dom.box.parentNode) {
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var foreground = this.parent.dom.foreground;
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if (!foreground) {
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throw new Error('Cannot redraw time axis: parent has no foreground container element');
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}
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foreground.appendChild(dom.box);
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}
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this.displayed = true;
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// update contents
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if (this.data.content != this.content) {
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this.content = this.data.content;
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if (this.content instanceof Element) {
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dom.content.innerHTML = '';
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dom.content.appendChild(this.content);
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}
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else if (this.data.content != undefined) {
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dom.content.innerHTML = this.content;
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}
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else {
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throw new Error('Property "content" missing in item ' + this.data.id);
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}
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this.dirty = true;
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}
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// update class
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var className = (this.data.className ? (' ' + this.data.className) : '') +
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(this.selected ? ' selected' : '');
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if (this.className != className) {
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this.className = className;
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dom.box.className = this.baseClassName + className;
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this.dirty = true;
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}
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// recalculate size
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if (this.dirty) {
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this.props.content.width = this.dom.content.offsetWidth;
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this.height = this.dom.box.offsetHeight;
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this.dirty = false;
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}
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this._repaintDeleteButton(dom.box);
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this._repaintDragLeft();
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this._repaintDragRight();
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};
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/**
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* Show the item in the DOM (when not already visible). The items DOM will
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* be created when needed.
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*/
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ItemRange.prototype.show = function show() {
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if (!this.displayed) {
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this.redraw();
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}
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};
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/**
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* Hide the item from the DOM (when visible)
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* @return {Boolean} changed
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*/
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ItemRange.prototype.hide = function hide() {
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if (this.displayed) {
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var box = this.dom.box;
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if (box.parentNode) {
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box.parentNode.removeChild(box);
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}
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this.top = null;
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this.left = null;
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this.displayed = false;
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}
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};
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/**
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* Reposition the item horizontally
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* @Override
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*/
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ItemRange.prototype.repositionX = function repositionX() {
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var props = this.props,
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parentWidth = this.parent.width,
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start = this.defaultOptions.toScreen(this.data.start),
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end = this.defaultOptions.toScreen(this.data.end),
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padding = 'padding' in this.options ? this.options.padding : this.defaultOptions.padding,
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contentLeft;
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// limit the width of the this, as browsers cannot draw very wide divs
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if (start < -parentWidth) {
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start = -parentWidth;
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}
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if (end > 2 * parentWidth) {
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end = 2 * parentWidth;
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}
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// when range exceeds left of the window, position the contents at the left of the visible area
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if (start < 0) {
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contentLeft = Math.min(-start,
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(end - start - props.content.width - 2 * padding));
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// TODO: remove the need for options.padding. it's terrible.
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}
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else {
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contentLeft = 0;
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}
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this.left = start;
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this.width = Math.max(end - start, 1);
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this.dom.box.style.left = this.left + 'px';
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this.dom.box.style.width = this.width + 'px';
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this.dom.content.style.left = contentLeft + 'px';
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};
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/**
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* Reposition the item vertically
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* @Override
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*/
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ItemRange.prototype.repositionY = function repositionY() {
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var orientation = this.options.orientation || this.defaultOptions.orientation,
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box = this.dom.box;
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if (orientation == 'top') {
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box.style.top = this.top + 'px';
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box.style.bottom = '';
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}
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else {
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box.style.top = '';
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box.style.bottom = this.top + 'px';
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}
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};
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/**
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* Repaint a drag area on the left side of the range when the range is selected
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* @protected
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*/
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ItemRange.prototype._repaintDragLeft = function () {
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if (this.selected && this.options.editable.updateTime && !this.dom.dragLeft) {
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// create and show drag area
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var dragLeft = document.createElement('div');
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dragLeft.className = 'drag-left';
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dragLeft.dragLeftItem = this;
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// TODO: this should be redundant?
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Hammer(dragLeft, {
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preventDefault: true
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}).on('drag', function () {
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//console.log('drag left')
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});
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this.dom.box.appendChild(dragLeft);
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this.dom.dragLeft = dragLeft;
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}
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else if (!this.selected && this.dom.dragLeft) {
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// delete drag area
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if (this.dom.dragLeft.parentNode) {
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this.dom.dragLeft.parentNode.removeChild(this.dom.dragLeft);
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}
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this.dom.dragLeft = null;
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}
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};
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/**
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* Repaint a drag area on the right side of the range when the range is selected
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* @protected
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*/
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ItemRange.prototype._repaintDragRight = function () {
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if (this.selected && this.options.editable.updateTime && !this.dom.dragRight) {
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// create and show drag area
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var dragRight = document.createElement('div');
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dragRight.className = 'drag-right';
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dragRight.dragRightItem = this;
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// TODO: this should be redundant?
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Hammer(dragRight, {
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preventDefault: true
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}).on('drag', function () {
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//console.log('drag right')
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});
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this.dom.box.appendChild(dragRight);
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this.dom.dragRight = dragRight;
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}
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else if (!this.selected && this.dom.dragRight) {
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// delete drag area
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if (this.dom.dragRight.parentNode) {
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this.dom.dragRight.parentNode.removeChild(this.dom.dragRight);
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}
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this.dom.dragRight = null;
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}
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};
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