/***/ 1288:

/***/ ((module) => {

var Attachments = wp.media.model.Attachments,

	Query;

/**

 * wp.media.model.Query

 *

 * A collection of attachments that match the supplied query arguments.

 *

 * Note: Do NOT change this.args after the query has been initialized.

 *       Things will break.

 *

 * @memberOf wp.media.model

 *

 * @class

 * @augments wp.media.model.Attachments

 * @augments Backbone.Collection

 *

 * @param {array}  [models]                      Models to initialize with the collection.

 * @param {object} [options]                     Options hash.

 * @param {object} [options.args]                Attachments query arguments.

 * @param {object} [options.args.posts_per_page]

 */

Query = Attachments.extend(/** @lends wp.media.model.Query.prototype */{

	/**

	 * @param {Array}  [models=[]]  Array of initial models to populate the collection.

	 * @param {Object} [options={}]

	 */

	initialize: function( models, options ) {

		var allowed;

		options = options || {};

		Attachments.prototype.initialize.apply( this, arguments );

		this.args     = options.args;

		this._hasMore = true;

		this.created  = new Date();

		this.filters.order = function( attachment ) {

			var orderby = this.props.get('orderby'),

				order = this.props.get('order');

			if ( ! this.comparator ) {

				return true;

			}

			/*

			 * We want any items that can be placed before the last

			 * item in the set. If we add any items after the last

			 * item, then we can't guarantee the set is complete.

			 */

			if ( this.length ) {

				return 1 !== this.comparator( attachment, this.last(), { ties: true });

			/*

			 * Handle the case where there are no items yet and

			 * we're sorting for recent items. In that case, we want

			 * changes that occurred after we created the query.

			 */

			} else if ( 'DESC' === order && ( 'date' === orderby || 'modified' === orderby ) ) {

				return attachment.get( orderby ) >= this.created;

			// If we're sorting by menu order and we have no items,

			// accept any items that have the default menu order (0).

			} else if ( 'ASC' === order && 'menuOrder' === orderby ) {

				return attachment.get( orderby ) === 0;

			}

			// Otherwise, we don't want any items yet.

			return false;

		};

		/*

		 * Observe the central `wp.Uploader.queue` collection to watch for

		 * new matches for the query.

		 *

		 * Only observe when a limited number of query args are set. There

		 * are no filters for other properties, so observing will result in

		 * false positives in those queries.

		 */

		allowed = [ 's', 'order', 'orderby', 'posts_per_page', 'post_mime_type', 'post_parent', 'author' ];

		if ( wp.Uploader && _( this.args ).chain().keys().difference( allowed ).isEmpty().value() ) {

			this.observe( wp.Uploader.queue );

		}

	},

	/**

	 * Whether there are more attachments that haven't been sync'd from the server

	 * that match the collection's query.

	 *

	 * @return {boolean}

	 */

	hasMore: function() {

		return this._hasMore;

	},

	/**

	 * Fetch more attachments from the server for the collection.

	 *

	 * @param {Object} [options={}]

	 * @return {Promise}

	 */

	more: function( options ) {

		var query = this;

		// If there is already a request pending, return early with the Deferred object.

		if ( this._more && 'pending' === this._more.state() ) {

			return this._more;

		}

		if ( ! this.hasMore() ) {

			return jQuery.Deferred().resolveWith( this ).promise();

		}

		options = options || {};

		options.remove = false;

		return this._more = this.fetch( options ).done( function( response ) {

			if ( _.isEmpty( response ) || -1 === query.args.posts_per_page || response.length < query.args.posts_per_page ) {

				query._hasMore = false;

			}

		});

	},

	/**

	 * Overrides Backbone.Collection.sync

	 * Overrides wp.media.model.Attachments.sync

	 *

	 * @param {string} method

	 * @param {Backbone.Model} model

	 * @param {Object} [options={}]

	 * @return {Promise}

	 */

	sync: function( method, model, options ) {

		var args, fallback;

		// Overload the read method so Attachment.fetch() functions correctly.

		if ( 'read' === method ) {

			options = options || {};

			options.context = this;

			options.data = _.extend( options.data || {}, {

				action:  'query-attachments',

				post_id: wp.media.model.settings.post.id

			});

			// Clone the args so manipulation is non-destructive.

			args = _.clone( this.args );

			// Determine which page to query.

			if ( -1 !== args.posts_per_page ) {

				args.paged = Math.round( this.length / args.posts_per_page ) + 1;

			}

			options.data.query = args;

			return wp.media.ajax( options );

		// Otherwise, fall back to `Backbone.sync()`.

		} else {

			/**

			 * Call wp.media.model.Attachments.sync or Backbone.sync

			 */

			fallback = Attachments.prototype.sync ? Attachments.prototype : Backbone;

			return fallback.sync.apply( this, arguments );

		}

	}

}, /** @lends wp.media.model.Query */{

	/**

	 * @readonly

	 */

	defaultProps: {

		orderby: 'date',

		order:   'DESC'

	},

	/**

	 * @readonly

	 */

	defaultArgs: {

		posts_per_page: 80

	},

	/**

	 * @readonly

	 */

	orderby: {

		allowed:  [ 'name', 'author', 'date', 'title', 'modified', 'uploadedTo', 'id', 'post__in', 'menuOrder' ],

		/**

		 * A map of JavaScript orderby values to their WP_Query equivalents.

		 * @type {Object}

		 */

		valuemap: {

			'id':         'ID',

			'uploadedTo': 'parent',

			'menuOrder':  'menu_order ID'

		}

	},

	/**

	 * A map of JavaScript query properties to their WP_Query equivalents.

	 *

	 * @readonly

	 */

	propmap: {

		'search':		's',

		'type':			'post_mime_type',

		'perPage':		'posts_per_page',

		'menuOrder':	'menu_order',

		'uploadedTo':	'post_parent',

		'status':		'post_status',

		'include':		'post__in',

		'exclude':		'post__not_in',

		'author':		'author'

	},

	/**

	 * Creates and returns an Attachments Query collection given the properties.

	 *

	 * Caches query objects and reuses where possible.

	 *

	 * @static

	 * @method

	 *

	 * @param {object} [props]

	 * @param {Object} [props.order]

	 * @param {Object} [props.orderby]

	 * @param {Object} [props.include]

	 * @param {Object} [props.exclude]

	 * @param {Object} [props.s]

	 * @param {Object} [props.post_mime_type]

	 * @param {Object} [props.posts_per_page]

	 * @param {Object} [props.menu_order]

	 * @param {Object} [props.post_parent]

	 * @param {Object} [props.post_status]

	 * @param {Object} [props.author]

	 * @param {Object} [options]

	 *

	 * @return {wp.media.model.Query} A new Attachments Query collection.

	 */

	get: (function(){

		/**

		 * @static

		 * @type Array

		 */

		var queries = [];

		/**

		 * @return {Query}

		 */

		return function( props, options ) {

			var args     = {},

				orderby  = Query.orderby,

				defaults = Query.defaultProps,

				query;

			// Remove the `query` property. This isn't linked to a query,

			// this *is* the query.

			delete props.query;

			// Fill default args.

			_.defaults( props, defaults );

			// Normalize the order.

			props.order = props.order.toUpperCase();

			if ( 'DESC' !== props.order && 'ASC' !== props.order ) {

				props.order = defaults.order.toUpperCase();

			}

			// Ensure we have a valid orderby value.

			if ( ! _.contains( orderby.allowed, props.orderby ) ) {

				props.orderby = defaults.orderby;

			}

			_.each( [ 'include', 'exclude' ], function( prop ) {

				if ( props[ prop ] && ! _.isArray( props[ prop ] ) ) {

					props[ prop ] = [ props[ prop ] ];

				}

			} );

			// Generate the query `args` object.

			// Correct any differing property names.

			_.each( props, function( value, prop ) {

				if ( _.isNull( value ) ) {

					return;

				}

				args[ Query.propmap[ prop ] || prop ] = value;

			});

			// Fill any other default query args.

			_.defaults( args, Query.defaultArgs );

			// `props.orderby` does not always map directly to `args.orderby`.

			// Substitute exceptions specified in orderby.keymap.

			args.orderby = orderby.valuemap[ props.orderby ] || props.orderby;

			queries = [];

			// Otherwise, create a new query and add it to the cache.

			if ( ! query ) {

				query = new Query( [], _.extend( options || {}, {

					props: props,

					args:  args

				} ) );

				queries.push( query );

			}

			return query;

		};

	}())

});

module.exports = Query;

/***/ }),