'use strict';

/**
 * Licensed Materials - Property of IBM
 * IBM Cognos Products: BI Cloud (C) Copyright IBM Corp. 2013, 2018
 * US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 *
 * VisModelManager
 * The VisModelManager object manages model-oriented information
 * and utilities for a visualization.
 *
 * The VisModelManager owns VisDataSlots and VisProperties that the renderer pieces render,
 * interactivity modifies and save persists.
 *
 * It also has utilities to ease access for Visualization items to data-oriented actions
 * (like querying/filtering).
 */

define(['../../../../lib/@waca/core-client/js/core-client/ui/core/Class'], function (Class) {
	'use strict';

	var VisModelManagerWrappedAPI = null; // class declaration

	VisModelManagerWrappedAPI = Class.extend({

		isMappingEmpty: function isMappingEmpty() {
			return this.mappingAPI.isMappingEmpty();
		},

		/**
   * @param id - the id of the slot to return the API for.
   * @returns a SlotAPI by its id for either a mapped or unmapped slot.
   * If no matching slotAPI exists for this id, it will return null.
   */
		getDataSlotById: function getDataSlotById(id) {
			return this.mappingAPI.getSlotAPIs({ includeUnmappedSlots: true, ids: [id] })[0] || null;
		},

		/**
   * @param dataItemAPIOrUniqueId - a dataItemAPI or a dataItemUniqueId
   * @returns a structure containing the slotAPI, the index in the slot where the item occurs and the dataItemAPI.
   */
		getDataItemSlotAndIndex: function getDataItemSlotAndIndex(dataItemAPIOrUniqueId) {
			return this.mappingAPI.getDataItemSlotAndIndex(dataItemAPIOrUniqueId);
		},

		/**
   * underscore-like filter function that applies to slots and items.
   * @param callback(dataItemAPI, slotAPI, indexInSlot) - add item location information to the filtered set when this function returns true.
   * @param slotAPI (optional) - restrict the filter to the supplied slot.
   * @returns An array of itemLocations that match the filter callback (dataItemAPI, slotAPI, indexInSlot)
   */
		filterSlotDataItems: function filterSlotDataItems(callback, optionalSlotAPI) {
			return this.mappingAPI.filterSlotDataItems(callback, optionalSlotAPI);
		},

		/**
   * @returns Label by mapping
   */
		getLabelByMapping: function getLabelByMapping(mapping) {
			return mapping.type !== 'attribute' || mapping.getSlotType() !== 'ordinal' ? mapping.getLabel() : this.getDataSlotById(mapping.slotId).getLabel();
		},

		/**
   * @param options - options which control which slotAPI's to return.
   *					if 'includeUnmappedSlots' is specified, all slots are returned for the definition
   *					otherwise, only mapped slots are returned.
   * @returns slotAPI's for the slots in this visualization customized by options.
   */
		getDataSlots: function getDataSlots(options) {
			return this.mappingAPI.getSlotAPIs(options || {});
		},

		getLayers: function getLayers() {
			return this.mappingAPI.getLayers();
		},

		getDefaultLayer: function getDefaultLayer() {
			/*TODO:For R9 release,We assume default layer is the first dataset
   from viz definition. A viz definition always have at least one dataSet
   if defined
   */
			return this.getDefinition().datasets[0];
		},

		isDataItemMapped: function isDataItemMapped(dataItemUniqueId) {
			if (!dataItemUniqueId) {
				return false;
			}
			var dataItemAPIs = this.mappingAPI.getDataItemAPIs();
			var numberOfDataItems = dataItemAPIs.length;
			for (var i = 0; i < numberOfDataItems; i++) {
				if (dataItemAPIs[i].getUniqueId() === dataItemUniqueId) {
					return true;
				}
			}
			return false;
		}
	});

	return VisModelManagerWrappedAPI;
});
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