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518 lines
15 KiB
518 lines
15 KiB
var Hammer = require('../../../module/hammer');
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var util = require('../../../util');
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var moment = require('../../../module/moment');
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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.groupShowing = true;
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this.dirty = true;
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this.top = null;
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this.right = 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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this.editable = null;
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this._updateEditStatus();
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}
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Item.prototype.stack = true;
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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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this.dirty = 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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this.dirty = true;
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if (this.displayed) this.redraw();
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};
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/**
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* Set data for the item. Existing data will be updated. The id should not
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* be changed. When the item is displayed, it will be redrawn immediately.
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* @param {Object} data
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*/
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Item.prototype.setData = function(data) {
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var groupChanged = data.group != undefined && this.data.group != data.group;
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if (groupChanged && this.parent != null) {
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this.parent.itemSet._moveToGroup(this, data.group);
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}
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this.parent.stackDirty = true;
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var subGroupChanged = data.subgroup != undefined && this.data.subgroup != data.subgroup;
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if (subGroupChanged && this.parent != null) {
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this.parent.changeSubgroup(this, this.data.subgroup, data.subgroup);
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}
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this.data = data;
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this._updateEditStatus();
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this.dirty = true;
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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 {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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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 drag area on the center of the item when the item is selected
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* @protected
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*/
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Item.prototype._repaintDragCenter = function () {
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if (this.selected && this.options.editable.updateTime && !this.dom.dragCenter) {
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var me = this;
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// create and show drag area
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var dragCenter = document.createElement('div');
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dragCenter.className = 'vis-drag-center';
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dragCenter.dragCenterItem = this;
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var hammer = new Hammer(dragCenter);
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hammer.on('tap', function (event) {
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me.parent.itemSet.body.emitter.emit('click', {
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event: event,
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item: me.id
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});
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});
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hammer.on('doubletap', function (event) {
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event.stopPropagation();
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me.parent.itemSet._onUpdateItem(me);
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me.parent.itemSet.body.emitter.emit('doubleClick', {
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event: event,
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item: me.id
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});
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});
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if (this.dom.box) {
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if (this.dom.dragLeft) {
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this.dom.box.insertBefore(dragCenter, this.dom.dragLeft);
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}
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else {
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this.dom.box.appendChild(dragCenter);
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}
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}
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else if (this.dom.point) {
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this.dom.point.appendChild(dragCenter);
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}
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this.dom.dragCenter = dragCenter;
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}
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else if (!this.selected && this.dom.dragCenter) {
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// delete drag area
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if (this.dom.dragCenter.parentNode) {
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this.dom.dragCenter.parentNode.removeChild(this.dom.dragCenter);
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}
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this.dom.dragCenter = null;
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}
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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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var editable = ((this.options.editable.overrideItems || this.editable == null) && this.options.editable.remove) ||
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(!this.options.editable.overrideItems && this.editable != null && this.editable.remove);
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if (this.selected && editable && !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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if (this.options.rtl) {
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deleteButton.className = 'vis-delete-rtl';
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} else {
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deleteButton.className = 'vis-delete';
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}
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deleteButton.title = 'Delete this item';
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// TODO: be able to destroy the delete button
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new Hammer(deleteButton).on('tap', function (event) {
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event.stopPropagation();
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me.parent.removeFromDataSet(me);
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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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/**
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* Repaint a onChange tooltip 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._repaintOnItemUpdateTimeTooltip = function (anchor) {
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if (!this.options.tooltipOnItemUpdateTime) return;
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var editable = (this.options.editable.updateTime ||
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this.data.editable === true) &&
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this.data.editable !== false;
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if (this.selected && editable && !this.dom.onItemUpdateTimeTooltip) {
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// create and show tooltip
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var me = this;
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var onItemUpdateTimeTooltip = document.createElement('div');
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onItemUpdateTimeTooltip.className = 'vis-onUpdateTime-tooltip';
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anchor.appendChild(onItemUpdateTimeTooltip);
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this.dom.onItemUpdateTimeTooltip = onItemUpdateTimeTooltip;
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} else if (!this.selected && this.dom.onItemUpdateTimeTooltip) {
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// remove button
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if (this.dom.onItemUpdateTimeTooltip.parentNode) {
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this.dom.onItemUpdateTimeTooltip.parentNode.removeChild(this.dom.onItemUpdateTimeTooltip);
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}
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this.dom.onItemUpdateTimeTooltip = null;
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}
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// position onChange tooltip
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if (this.dom.onItemUpdateTimeTooltip) {
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// only show when editing
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this.dom.onItemUpdateTimeTooltip.style.visibility = this.parent.itemSet.touchParams.itemIsDragging ? 'visible' : 'hidden';
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// position relative to item's content
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if (this.options.rtl) {
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this.dom.onItemUpdateTimeTooltip.style.right = this.dom.content.style.right;
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} else {
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this.dom.onItemUpdateTimeTooltip.style.left = this.dom.content.style.left;
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}
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// position above or below the item depending on the item's position in the window
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var tooltipOffset = 50; // TODO: should be tooltip height (depends on template)
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var scrollTop = this.parent.itemSet.body.domProps.scrollTop;
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// TODO: this.top for orientation:true is actually the items distance from the bottom...
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// (should be this.bottom)
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var itemDistanceFromTop
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if (this.options.orientation.item == 'top') {
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itemDistanceFromTop = this.top;
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} else {
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itemDistanceFromTop = (this.parent.height - this.top - this.height)
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}
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var isCloseToTop = itemDistanceFromTop + this.parent.top - tooltipOffset < -scrollTop;
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if (isCloseToTop) {
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this.dom.onItemUpdateTimeTooltip.style.bottom = "";
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this.dom.onItemUpdateTimeTooltip.style.top = this.height + 2 + "px";
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} else {
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this.dom.onItemUpdateTimeTooltip.style.top = "";
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this.dom.onItemUpdateTimeTooltip.style.bottom = this.height + 2 + "px";
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}
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// handle tooltip content
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var content;
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var templateFunction;
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if (this.options.tooltipOnItemUpdateTime && this.options.tooltipOnItemUpdateTime.template) {
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templateFunction = this.options.tooltipOnItemUpdateTime.template.bind(this);
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content = templateFunction(this.data);
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} else {
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content = 'start: ' + moment(this.data.start).format('MM/DD/YYYY hh:mm');
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if (this.data.end) {
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content += '<br> end: ' + moment(this.data.end).format('MM/DD/YYYY hh:mm');
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}
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}
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this.dom.onItemUpdateTimeTooltip.innerHTML = content;
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}
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};
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/**
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* Set HTML contents for the item
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* @param {Element} element HTML element to fill with the contents
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* @private
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*/
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Item.prototype._updateContents = function (element) {
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var content;
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var templateFunction;
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var itemVisibleFrameContent;
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var visibleFrameTemplateFunction;
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var itemData = this.parent.itemSet.itemsData.get(this.id); // get a clone of the data from the dataset
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var frameElement = this.dom.box || this.dom.point;
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var itemVisibleFrameContentElement = frameElement.getElementsByClassName('vis-item-visible-frame')[0]
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if (this.options.visibleFrameTemplate) {
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visibleFrameTemplateFunction = this.options.visibleFrameTemplate.bind(this);
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itemVisibleFrameContent = visibleFrameTemplateFunction(itemData, frameElement);
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} else {
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itemVisibleFrameContent = '';
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}
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if (itemVisibleFrameContentElement) {
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if ((itemVisibleFrameContent instanceof Object) && !(itemVisibleFrameContent instanceof Element)) {
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visibleFrameTemplateFunction(itemData, itemVisibleFrameContentElement)
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} else {
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var changed = this._contentToString(this.itemVisibleFrameContent) !== this._contentToString(itemVisibleFrameContent);
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if (changed) {
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// only replace the content when changed
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if (itemVisibleFrameContent instanceof Element) {
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itemVisibleFrameContentElement.innerHTML = '';
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itemVisibleFrameContentElement.appendChild(itemVisibleFrameContent);
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}
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else if (itemVisibleFrameContent != undefined) {
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itemVisibleFrameContentElement.innerHTML = itemVisibleFrameContent;
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}
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else {
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if (!(this.data.type == 'background' && this.data.content === undefined)) {
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throw new Error('Property "content" missing in item ' + this.id);
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}
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}
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this.itemVisibleFrameContent = itemVisibleFrameContent;
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}
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}
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}
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if (this.options.template) {
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templateFunction = this.options.template.bind(this);
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content = templateFunction(itemData, element, this.data);
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} else {
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content = this.data.content;
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}
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if ((content instanceof Object) && !(content instanceof Element)) {
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templateFunction(itemData, element)
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} else {
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var changed = this._contentToString(this.content) !== this._contentToString(content);
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if (changed) {
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// only replace the content when changed
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if (content instanceof Element) {
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element.innerHTML = '';
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element.appendChild(content);
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}
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else if (content != undefined) {
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element.innerHTML = content;
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}
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else {
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if (!(this.data.type == 'background' && this.data.content === undefined)) {
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throw new Error('Property "content" missing in item ' + this.id);
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}
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}
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this.content = content;
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}
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}
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};
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/**
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* Process dataAttributes timeline option and set as data- attributes on dom.content
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* @param {Element} element HTML element to which the attributes will be attached
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* @private
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*/
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Item.prototype._updateDataAttributes = function(element) {
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if (this.options.dataAttributes && this.options.dataAttributes.length > 0) {
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var attributes = [];
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if (Array.isArray(this.options.dataAttributes)) {
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attributes = this.options.dataAttributes;
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}
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else if (this.options.dataAttributes == 'all') {
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attributes = Object.keys(this.data);
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}
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else {
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return;
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}
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for (var i = 0; i < attributes.length; i++) {
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var name = attributes[i];
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var value = this.data[name];
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if (value != null) {
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element.setAttribute('data-' + name, value);
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}
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else {
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element.removeAttribute('data-' + name);
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}
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}
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}
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};
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/**
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* Update custom styles of the element
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* @param element
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* @private
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*/
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Item.prototype._updateStyle = function(element) {
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// remove old styles
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if (this.style) {
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util.removeCssText(element, this.style);
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this.style = null;
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}
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// append new styles
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if (this.data.style) {
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util.addCssText(element, this.data.style);
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this.style = this.data.style;
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}
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};
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/**
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* Stringify the items contents
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* @param {string | Element | undefined} content
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* @returns {string | undefined}
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* @private
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*/
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Item.prototype._contentToString = function (content) {
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if (typeof content === 'string') return content;
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if (content && 'outerHTML' in content) return content.outerHTML;
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return content;
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};
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/**
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* Update the editability of this item.
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*/
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Item.prototype._updateEditStatus = function() {
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if (this.options) {
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if(typeof this.options.editable === 'boolean') {
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this.editable = {
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updateTime: this.options.editable,
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updateGroup: this.options.editable,
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remove: this.options.editable
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};
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} else if(typeof this.options.editable === 'object') {
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this.editable = {};
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util.selectiveExtend(['updateTime', 'updateGroup', 'remove'], this.editable, this.options.editable);
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};
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}
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// Item data overrides, except if options.editable.overrideItems is set.
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if (!this.options || !(this.options.editable) || (this.options.editable.overrideItems !== true)) {
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if (this.data) {
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if (typeof this.data.editable === 'boolean') {
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this.editable = {
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updateTime: this.data.editable,
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updateGroup: this.data.editable,
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remove: this.data.editable
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}
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} else if (typeof this.data.editable === 'object') {
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// TODO: in vis.js 5.0, we should change this to not reset options from the timeline configuration.
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// Basically just remove the next line...
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this.editable = {};
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util.selectiveExtend(['updateTime', 'updateGroup', 'remove'], this.editable, this.data.editable);
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}
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}
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}
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};
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/**
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* Return the width of the item left from its start date
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* @return {number}
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*/
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Item.prototype.getWidthLeft = function () {
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return 0;
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};
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/**
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* Return the width of the item right from the max of its start and end date
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* @return {number}
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*/
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Item.prototype.getWidthRight = function () {
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return 0;
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};
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/**
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* Return the title of the item
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* @return {string | undefined}
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*/
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Item.prototype.getTitle = function () {
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return this.data.title;
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};
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module.exports = Item;
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