'use strict';

/**
 * Licensed Materials - Property of IBM
 * IBM Cognos Products: BI Cloud (C) Copyright IBM Corp. 2014, 2019
 * US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 */

define(['gemini/dashboard/layout/authoring/views/PageCollectionView', 'baglass/core-client/js/core-client/utils/EventHelper'], function (PageCollectionView) {

	var SlideShow = PageCollectionView.extend({

		layoutName: 'slideshow',

		init: function init() {
			SlideShow.inherited('init', this, arguments);
			this.specializeConsumeView(['onPlaybackNext', 'onPlaybackPrevious']);
		},

		/**
   * Called when a new scene is added or existing scene is updated
   *
   * @param {Object} layoutView The scene layout model that is being added/moved
   * @param {String} [insertBefore] The id value of the scene model to use as the next sibling
   *
   * @returns {Promise}
   */
		add: function add(layoutView, insertBefore) {
			if (!this.consumeView._hasScene(layoutView.model)) {
				this._addNewScene(layoutView, insertBefore);
			} else {
				this._reorderScenes(layoutView, insertBefore);
			}

			// Once the add/update of the scene is done we want to select it
			return this.consumeView._selectScene(layoutView.model.id);
		},

		/**
   * Called when a view is removed
   *
   * @param node
   */
		removeChild: function removeChild(layoutView) {
			var model = layoutView.model;

			// Remove the content nodes
			layoutView.$el.parent().remove();

			this.consumeView._removeScene(model);
			SlideShow.inherited('remove', this, arguments);
		},

		/**
   * @param {Object} layoutView The scene layout model that is being added/moved
   * @param {String} [insertBefore] The id value of the scene model to use as the next sibling
   */
		_addNewScene: function _addNewScene(layoutView, insertBefore) {
			var model = layoutView.model;
			var template = this.htmlTemplate.getItemTemplate(this.layoutName, '', model);
			var sceneContent = this.htmlTemplate.replaceLayoutValues(template, this.model);

			var htmlNode = document.createElement('div');
			htmlNode.innerHTML = sceneContent.trim();
			var sceneHtml = htmlNode.firstChild;
			sceneHtml.appendChild(layoutView.domNode);

			this.$el.find('.tabCntr').append(sceneHtml);

			this.consumeView._addScene(model);

			if (insertBefore) {
				this._reorderScenes(layoutView, insertBefore);
			}
		},

		/**
   * @param {Object} layoutView The scene layout model that is being added/moved
   * @param {String} [insertBefore] The id value of the scene model to use as the next sibling
   */
		_reorderScenes: function _reorderScenes(layoutView, insertBefore) {
			var model = layoutView.model;
			var scene = this.consumeView._getScene(model);
			scene.$el.detach().append(layoutView.domNode);

			if (insertBefore) {
				var beforeScene = this.consumeView._getSceneById(insertBefore);
				scene.$el.insertBefore(beforeScene.$el);
			} else {
				scene.$el.appendTo(this.$el.find('.tabCntr'));
			}

			this.consumeView._updateSceneList(model, insertBefore);

			this.layoutController.eventRouter.trigger('scene:reorder', { model: model, insertBefore: insertBefore });
		},

		// Overrides consume-mode behavior
		onPlaybackNext: function onPlaybackNext() {
			return this;
		},

		onPlaybackPrevious: function onPlaybackPrevious() {
			return this;
		}
	});

	return SlideShow;
});
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