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143 lines
3.3 KiB
143 lines
3.3 KiB
var Hammer = require('hammerjs');
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/**
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* @constructor Item
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* @param {Object} data Object containing (optional) parameters type,
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* start, end, content, group, className.
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* @param {{toScreen: function, toTime: function}} conversion
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* Conversion functions from time to screen and vice versa
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* @param {Object} options Configuration options
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* // TODO: describe available options
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*/
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function Item (data, conversion, options) {
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this.id = null;
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this.parent = null;
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this.data = data;
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this.dom = null;
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this.conversion = conversion || {};
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this.options = options || {};
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this.selected = false;
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this.displayed = false;
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this.dirty = true;
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this.top = null;
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this.left = null;
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this.width = null;
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this.height = null;
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}
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/**
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* Select current item
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*/
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Item.prototype.select = function() {
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this.selected = true;
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if (this.displayed) this.redraw();
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};
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/**
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* Unselect current item
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*/
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Item.prototype.unselect = function() {
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this.selected = false;
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if (this.displayed) this.redraw();
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};
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/**
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* Set a parent for the item
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* @param {ItemSet | Group} parent
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*/
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Item.prototype.setParent = function(parent) {
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if (this.displayed) {
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this.hide();
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this.parent = parent;
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if (this.parent) {
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this.show();
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}
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}
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else {
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this.parent = parent;
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}
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};
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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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Item.prototype.isVisible = function(range) {
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// Should be implemented by Item implementations
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return false;
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};
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/**
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* Show the Item in the DOM (when not already visible)
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* @return {Boolean} changed
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*/
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Item.prototype.show = function() {
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return false;
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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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Item.prototype.hide = function() {
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return false;
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};
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/**
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* Repaint the item
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*/
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Item.prototype.redraw = function() {
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// should be implemented by the item
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};
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/**
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* Reposition the Item horizontally
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*/
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Item.prototype.repositionX = function() {
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// should be implemented by the item
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};
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/**
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* Reposition the Item vertically
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*/
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Item.prototype.repositionY = function() {
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// should be implemented by the item
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};
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/**
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* Repaint a delete button on the top right of the item when the item is selected
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* @param {HTMLElement} anchor
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* @protected
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*/
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Item.prototype._repaintDeleteButton = function (anchor) {
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if (this.selected && this.options.editable.remove && !this.dom.deleteButton) {
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// create and show button
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var me = this;
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var deleteButton = document.createElement('div');
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deleteButton.className = 'delete';
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deleteButton.title = 'Delete this item';
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Hammer(deleteButton, {
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preventDefault: true
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}).on('tap', function (event) {
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me.parent.removeFromDataSet(me);
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event.stopPropagation();
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});
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anchor.appendChild(deleteButton);
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this.dom.deleteButton = deleteButton;
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}
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else if (!this.selected && this.dom.deleteButton) {
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// remove button
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if (this.dom.deleteButton.parentNode) {
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this.dom.deleteButton.parentNode.removeChild(this.dom.deleteButton);
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}
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this.dom.deleteButton = null;
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}
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};
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module.exports = Item;
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