'use strict';

/*
 *+------------------------------------------------------------------------+
 *| Licensed Materials - Property of IBM
 *| IBM Cognos Products: Dashboard
 *| (C) Copyright IBM Corp. 2018
 *|
 *| US Government Users Restricted Rights - Use, duplication or disclosure
 *| restricted by GSA ADP Schedule Contract with IBM Corp.
 *+------------------------------------------------------------------------+
 */
define(['./BaseTask', '../../../DynamicFileLoader'], function (BaseTask, DynamicFileLoader) {
	'use strict';

	var VisViewTask = BaseTask.extend({

		process: function process(renderContext) {
			var widget = this.ownerWidget;
			if (widget) {
				// set default layout properties
				widget.setLayoutProperties({
					pannable: false,
					mobilePannable: false,
					noRotate: true,
					maximizable: true
				});
			}

			if (this._isStepComplete(renderContext, 'visView')) {
				return Promise.resolve(renderContext);
			}

			// If loading the view, run the whole process over.
			this.getRenderState().firstRenderComplete = false;

			var viewPath = this._rendererToView();
			return this._loadVisView(viewPath).then(function (visView) {
				if (this._completeStep(renderContext, 'visView', visView)) {
					// If we've updated the view, need to update it
					// in the model (ie: remove the old one).
					this._placeViewIntoDOM(visView, renderContext.widgetSize);
				} else {
					// The visview is discarded. We remove it to
					// make sure we cleanup all event handlers.
					visView.remove();
				}
				return renderContext;
			}.bind(this));
		},

		/**
   * Mostly exists for unit testing!
   */
		_loadVisView: function _loadVisView(viewPath) {
			return DynamicFileLoader.load([viewPath]).then(function (modules) {
				var VisView = modules[0];
				var visView = new VisView({
					visModel: this.visAPI,
					logger: this.logger,
					ownerWidget: this.ownerWidget,
					dashboardApi: this.dashboardApi,
					content: this.content
				});
				return visView;
			}.bind(this));
		},

		/**
   * Temporary function to accommodate vis definitions that refer to
   * RaveRenderer, GridRenderer.  Replace 'Renderer" with 'View'
   * eg....transfrom the name to "RaveView" and "GridView".
   */
		_rendererToView: function _rendererToView() {
			var theView = this.visAPI.getRenderer();
			if (theView.substr(theView.length - 8) === 'Renderer') {
				return theView.substr(0, theView.length - 8) + 'View';
			}
			return theView;
		},

		/**
   * When a view is first created, set its preferred size based on its definition
   * and place the view into the DOM.
   * @param visView The view that was just created.
   * @param bounds The view's bounds
   */
		_placeViewIntoDOM: function _placeViewIntoDOM(visView, bounds) {
			var widget = this.ownerWidget;
			widget.placeAt(visView);
			widget.applyCommonProperties();
			if (!widget.dataSlotsView) {
				visView.resize(bounds);
			}
		}
	});

	return VisViewTask;
});
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