analytics/webcontent/bi/js/gemini/dashboard/layout/authoring/views/TemplateContainer.js

'use strict';

/**
 * Licensed Materials - Property of IBM
 * IBM Cognos Products: BI Cloud (C) Copyright IBM Corp. 2015, 2018
 * US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 */
define(['jquery', './Absolute'], function ($, BaseLayout) {
	var PageLayout = null;

	/**
 * Top level container that contains a template.
 */
	PageLayout = BaseLayout.extend({

		init: function init() {
			PageLayout.inherited('init', this, arguments);
			this.scrollPosition = {
				top: this.domNode.scrollTop,
				left: this.domNode.scrollLeft
			};
			this.$el.on('scroll.' + this.id, this._onScroll.bind(this));
		},

		destroy: function destroy() {
			PageLayout.inherited('destroy', this, arguments);
			this.$el.off('scroll.' + this.id);
		},

		// Prevent adding widgets outside of the page boundaries
		createDropZone: function createDropZone() {
			// No-op, override the inherited behaviour.
		},

		_onScroll: function _onScroll() {
			var scrollTop = this.domNode.scrollTop;
			var scrollLeft = this.domNode.scrollLeft;
			this._dndManager.scrollChildrenCandidateDropTargets(this.domNode, this.scrollPosition.top - scrollTop, this.scrollPosition.left - scrollLeft);
			this.scrollPosition.top = scrollTop;
			this.scrollPosition.left = scrollLeft;
		},

		_getTemplateLayoutView: function _getTemplateLayoutView() {
			var templateLayout = null;
			if (this.model.items && this.model.items.length > 0) {
				var model = this.model.items[0];
				templateLayout = $('#' + this.layoutController.modelIdToNodeId(model.id), this.layoutController.$el)[0]._layout;
			}
			return templateLayout;
		},

		_addWidget: function _addWidget(widgetSpec, isTouch) {
			var templateView = this._getTemplateLayoutView();
			if (templateView) {
				// Set new parent id to the template id.
				widgetSpec.parentId = templateView.model.id;

				// Calculate new position
				var top = parseInt(widgetSpec.layoutProperties.style.top, 10);
				var left = parseInt(widgetSpec.layoutProperties.style.left, 10);

				// Calculate new top and left
				var position = templateView.$el.position();
				var newTop = top - position.top - this.domNode.scrollTop;
				var newLeft = left - position.left - this.domNode.scrollLeft;

				// Take into account the minimum top/left supported by the templateView that we are adding to.
				widgetSpec.layoutProperties.style.top = Math.round(Math.max(newTop, templateView.getMinimumTop())) + 'px';
				widgetSpec.layoutProperties.style.left = Math.round(Math.max(newLeft, templateView.getMinimumLeft())) + 'px';

				// Add the widget the template layout
				templateView.authorHelper._addWidget(widgetSpec, isTouch);
			}
		},

		setPreferredLocation: function setPreferredLocation(options) {
			var view = this._getTemplateLayoutView();
			if (view && view.setPreferredLocation) {
				view.setPreferredLocation(options);
			}
		}

	});

	return PageLayout;
});
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