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/home/tahkoom/public_html/wp-includes/js/media-models.js
/******/ (() => { // webpackBootstrap
/******/ 	var __webpack_modules__ = ({

/***/ 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;


/***/ }),

/***/ 3343:
/***/ ((module) => {

var $ = Backbone.$,
	Attachment;

/**
 * wp.media.model.Attachment
 *
 * @memberOf wp.media.model
 *
 * @class
 * @augments Backbone.Model
 */
Attachment = Backbone.Model.extend(/** @lends wp.media.model.Attachment.prototype */{
	/**
	 * Triggered when attachment details change
	 * Overrides Backbone.Model.sync
	 *
	 * @param {string} method
	 * @param {wp.media.model.Attachment} model
	 * @param {Object} [options={}]
	 *
	 * @return {Promise}
	 */
	sync: function( method, model, options ) {
		// If the attachment does not yet have an `id`, return an instantly
		// rejected promise. Otherwise, all of our requests will fail.
		if ( _.isUndefined( this.id ) ) {
			return $.Deferred().rejectWith( this ).promise();
		}

		// Overload the `read` request so Attachment.fetch() functions correctly.
		if ( 'read' === method ) {
			options = options || {};
			options.context = this;
			options.data = _.extend( options.data || {}, {
				action: 'get-attachment',
				id: this.id
			});
			return wp.media.ajax( options );

		// Overload the `update` request so properties can be saved.
		} else if ( 'update' === method ) {
			// If we do not have the necessary nonce, fail immediately.
			if ( ! this.get('nonces') || ! this.get('nonces').update ) {
				return $.Deferred().rejectWith( this ).promise();
			}

			options = options || {};
			options.context = this;

			// Set the action and ID.
			options.data = _.extend( options.data || {}, {
				action:  'save-attachment',
				id:      this.id,
				nonce:   this.get('nonces').update,
				post_id: wp.media.model.settings.post.id
			});

			// Record the values of the changed attributes.
			if ( model.hasChanged() ) {
				options.data.changes = {};

				_.each( model.changed, function( value, key ) {
					options.data.changes[ key ] = this.get( key );
				}, this );
			}

			return wp.media.ajax( options );

		// Overload the `delete` request so attachments can be removed.
		// This will permanently delete an attachment.
		} else if ( 'delete' === method ) {
			options = options || {};

			if ( ! options.wait ) {
				this.destroyed = true;
			}

			options.context = this;
			options.data = _.extend( options.data || {}, {
				action:   'delete-post',
				id:       this.id,
				_wpnonce: this.get('nonces')['delete']
			});

			return wp.media.ajax( options ).done( function() {
				this.destroyed = true;
			}).fail( function() {
				this.destroyed = false;
			});

		// Otherwise, fall back to `Backbone.sync()`.
		} else {
			/**
			 * Call `sync` directly on Backbone.Model
			 */
			return Backbone.Model.prototype.sync.apply( this, arguments );
		}
	},
	/**
	 * Convert date strings into Date objects.
	 *
	 * @param {Object} resp The raw response object, typically returned by fetch()
	 * @return {Object} The modified response object, which is the attributes hash
	 *                  to be set on the model.
	 */
	parse: function( resp ) {
		if ( ! resp ) {
			return resp;
		}

		resp.date = new Date( resp.date );
		resp.modified = new Date( resp.modified );
		return resp;
	},
	/**
	 * @param {Object} data The properties to be saved.
	 * @param {Object} options Sync options. e.g. patch, wait, success, error.
	 *
	 * @this Backbone.Model
	 *
	 * @return {Promise}
	 */
	saveCompat: function( data, options ) {
		var model = this;

		// If we do not have the necessary nonce, fail immediately.
		if ( ! this.get('nonces') || ! this.get('nonces').update ) {
			return $.Deferred().rejectWith( this ).promise();
		}

		return wp.media.post( 'save-attachment-compat', _.defaults({
			id:      this.id,
			nonce:   this.get('nonces').update,
			post_id: wp.media.model.settings.post.id
		}, data ) ).done( function( resp, status, xhr ) {
			model.set( model.parse( resp, xhr ), options );
		});
	}
},/** @lends wp.media.model.Attachment */{
	/**
	 * Create a new model on the static 'all' attachments collection and return it.
	 *
	 * @static
	 *
	 * @param {Object} attrs
	 * @return {wp.media.model.Attachment}
	 */
	create: function( attrs ) {
		var Attachments = wp.media.model.Attachments;
		return Attachments.all.push( attrs );
	},
	/**
	 * Create a new model on the static 'all' attachments collection and return it.
	 *
	 * If this function has already been called for the id,
	 * it returns the specified attachment.
	 *
	 * @static
	 * @param {string} id A string used to identify a model.
	 * @param {Backbone.Model|undefined} attachment
	 * @return {wp.media.model.Attachment}
	 */
	get: _.memoize( function( id, attachment ) {
		var Attachments = wp.media.model.Attachments;
		return Attachments.all.push( attachment || { id: id } );
	})
});

module.exports = Attachment;


/***/ }),

/***/ 4134:
/***/ ((module) => {

var Attachments = wp.media.model.Attachments,
	Selection;

/**
 * wp.media.model.Selection
 *
 * A selection of attachments.
 *
 * @memberOf wp.media.model
 *
 * @class
 * @augments wp.media.model.Attachments
 * @augments Backbone.Collection
 */
Selection = Attachments.extend(/** @lends wp.media.model.Selection.prototype */{
	/**
	 * Refresh the `single` model whenever the selection changes.
	 * Binds `single` instead of using the context argument to ensure
	 * it receives no parameters.
	 *
	 * @param {Array} [models=[]] Array of models used to populate the collection.
	 * @param {Object} [options={}]
	 */
	initialize: function( models, options ) {
		/**
		 * call 'initialize' directly on the parent class
		 */
		Attachments.prototype.initialize.apply( this, arguments );
		this.multiple = options && options.multiple;

		this.on( 'add remove reset', _.bind( this.single, this, false ) );
	},

	/**
	 * If the workflow does not support multi-select, clear out the selection
	 * before adding a new attachment to it.
	 *
	 * @param {Array} models
	 * @param {Object} options
	 * @return {wp.media.model.Attachment[]}
	 */
	add: function( models, options ) {
		if ( ! this.multiple ) {
			this.remove( this.models );
		}
		/**
		 * call 'add' directly on the parent class
		 */
		return Attachments.prototype.add.call( this, models, options );
	},

	/**
	 * Fired when toggling (clicking on) an attachment in the modal.
	 *
	 * @param {undefined|boolean|wp.media.model.Attachment} model
	 *
	 * @fires wp.media.model.Selection#selection:single
	 * @fires wp.media.model.Selection#selection:unsingle
	 *
	 * @return {Backbone.Model}
	 */
	single: function( model ) {
		var previous = this._single;

		// If a `model` is provided, use it as the single model.
		if ( model ) {
			this._single = model;
		}
		// If the single model isn't in the selection, remove it.
		if ( this._single && ! this.get( this._single.cid ) ) {
			delete this._single;
		}

		this._single = this._single || this.last();

		// If single has changed, fire an event.
		if ( this._single !== previous ) {
			if ( previous ) {
				previous.trigger( 'selection:unsingle', previous, this );

				// If the model was already removed, trigger the collection
				// event manually.
				if ( ! this.get( previous.cid ) ) {
					this.trigger( 'selection:unsingle', previous, this );
				}
			}
			if ( this._single ) {
				this._single.trigger( 'selection:single', this._single, this );
			}
		}

		// Return the single model, or the last model as a fallback.
		return this._single;
	}
});

module.exports = Selection;


/***/ }),

/***/ 8266:
/***/ ((module) => {

/**
 * wp.media.model.Attachments
 *
 * A collection of attachments.
 *
 * This collection has no persistence with the server without supplying
 * 'options.props.query = true', which will mirror the collection
 * to an Attachments Query collection - @see wp.media.model.Attachments.mirror().
 *
 * @memberOf wp.media.model
 *
 * @class
 * @augments Backbone.Collection
 *
 * @param {array}  [models]                Models to initialize with the collection.
 * @param {object} [options]               Options hash for the collection.
 * @param {string} [options.props]         Options hash for the initial query properties.
 * @param {string} [options.props.order]   Initial order (ASC or DESC) for the collection.
 * @param {string} [options.props.orderby] Initial attribute key to order the collection by.
 * @param {string} [options.props.query]   Whether the collection is linked to an attachments query.
 * @param {string} [options.observe]
 * @param {string} [options.filters]
 *
 */
var Attachments = Backbone.Collection.extend(/** @lends wp.media.model.Attachments.prototype */{
	/**
	 * @type {wp.media.model.Attachment}
	 */
	model: wp.media.model.Attachment,
	/**
	 * @param {Array} [models=[]] Array of models used to populate the collection.
	 * @param {Object} [options={}]
	 */
	initialize: function( models, options ) {
		options = options || {};

		this.props   = new Backbone.Model();
		this.filters = options.filters || {};

		// Bind default `change` events to the `props` model.
		this.props.on( 'change', this._changeFilteredProps, this );

		this.props.on( 'change:order',   this._changeOrder,   this );
		this.props.on( 'change:orderby', this._changeOrderby, this );
		this.props.on( 'change:query',   this._changeQuery,   this );

		this.props.set( _.defaults( options.props || {} ) );

		if ( options.observe ) {
			this.observe( options.observe );
		}
	},
	/**
	 * Sort the collection when the order attribute changes.
	 *
	 * @access private
	 */
	_changeOrder: function() {
		if ( this.comparator ) {
			this.sort();
		}
	},
	/**
	 * Set the default comparator only when the `orderby` property is set.
	 *
	 * @access private
	 *
	 * @param {Backbone.Model} model
	 * @param {string} orderby
	 */
	_changeOrderby: function( model, orderby ) {
		// If a different comparator is defined, bail.
		if ( this.comparator && this.comparator !== Attachments.comparator ) {
			return;
		}

		if ( orderby && 'post__in' !== orderby ) {
			this.comparator = Attachments.comparator;
		} else {
			delete this.comparator;
		}
	},
	/**
	 * If the `query` property is set to true, query the server using
	 * the `props` values, and sync the results to this collection.
	 *
	 * @access private
	 *
	 * @param {Backbone.Model} model
	 * @param {boolean} query
	 */
	_changeQuery: function( model, query ) {
		if ( query ) {
			this.props.on( 'change', this._requery, this );
			this._requery();
		} else {
			this.props.off( 'change', this._requery, this );
		}
	},
	/**
	 * @access private
	 *
	 * @param {Backbone.Model} model
	 */
	_changeFilteredProps: function( model ) {
		// If this is a query, updating the collection will be handled by
		// `this._requery()`.
		if ( this.props.get('query') ) {
			return;
		}

		var changed = _.chain( model.changed ).map( function( t, prop ) {
			var filter = Attachments.filters[ prop ],
				term = model.get( prop );

			if ( ! filter ) {
				return;
			}

			if ( term && ! this.filters[ prop ] ) {
				this.filters[ prop ] = filter;
			} else if ( ! term && this.filters[ prop ] === filter ) {
				delete this.filters[ prop ];
			} else {
				return;
			}

			// Record the change.
			return true;
		}, this ).any().value();

		if ( ! changed ) {
			return;
		}

		// If no `Attachments` model is provided to source the searches from,
		// then automatically generate a source from the existing models.
		if ( ! this._source ) {
			this._source = new Attachments( this.models );
		}

		this.reset( this._source.filter( this.validator, this ) );
	},

	validateDestroyed: false,
	/**
	 * Checks whether an attachment is valid.
	 *
	 * @param {wp.media.model.Attachment} attachment
	 * @return {boolean}
	 */
	validator: function( attachment ) {

		if ( ! this.validateDestroyed && attachment.destroyed ) {
			return false;
		}
		return _.all( this.filters, function( filter ) {
			return !! filter.call( this, attachment );
		}, this );
	},
	/**
	 * Add or remove an attachment to the collection depending on its validity.
	 *
	 * @param {wp.media.model.Attachment} attachment
	 * @param {Object} options
	 * @return {wp.media.model.Attachments} Returns itself to allow chaining.
	 */
	validate: function( attachment, options ) {
		var valid = this.validator( attachment ),
			hasAttachment = !! this.get( attachment.cid );

		if ( ! valid && hasAttachment ) {
			this.remove( attachment, options );
		} else if ( valid && ! hasAttachment ) {
			this.add( attachment, options );
		}

		return this;
	},

	/**
	 * Add or remove all attachments from another collection depending on each one's validity.
	 *
	 * @param {wp.media.model.Attachments} attachments
	 * @param {Object} [options={}]
	 *
	 * @fires wp.media.model.Attachments#reset
	 *
	 * @return {wp.media.model.Attachments} Returns itself to allow chaining.
	 */
	validateAll: function( attachments, options ) {
		options = options || {};

		_.each( attachments.models, function( attachment ) {
			this.validate( attachment, { silent: true });
		}, this );

		if ( ! options.silent ) {
			this.trigger( 'reset', this, options );
		}
		return this;
	},
	/**
	 * Start observing another attachments collection change events
	 * and replicate them on this collection.
	 *
	 * @param {wp.media.model.Attachments} The attachments collection to observe.
	 * @return {wp.media.model.Attachments} Returns itself to allow chaining.
	 */
	observe: function( attachments ) {
		this.observers = this.observers || [];
		this.observers.push( attachments );

		attachments.on( 'add change remove', this._validateHandler, this );
		attachments.on( 'add', this._addToTotalAttachments, this );
		attachments.on( 'remove', this._removeFromTotalAttachments, this );
		attachments.on( 'reset', this._validateAllHandler, this );
		this.validateAll( attachments );
		return this;
	},
	/**
	 * Stop replicating collection change events from another attachments collection.
	 *
	 * @param {wp.media.model.Attachments} The attachments collection to stop observing.
	 * @return {wp.media.model.Attachments} Returns itself to allow chaining.
	 */
	unobserve: function( attachments ) {
		if ( attachments ) {
			attachments.off( null, null, this );
			this.observers = _.without( this.observers, attachments );

		} else {
			_.each( this.observers, function( attachments ) {
				attachments.off( null, null, this );
			}, this );
			delete this.observers;
		}

		return this;
	},
	/**
	 * Update total attachment count when items are added to a collection.
	 *
	 * @access private
	 *
	 * @since 5.8.0
	 */
	_removeFromTotalAttachments: function() {
		if ( this.mirroring ) {
			this.mirroring.totalAttachments = this.mirroring.totalAttachments - 1;
		}
	},
	/**
	 * Update total attachment count when items are added to a collection.
	 *
	 * @access private
	 *
	 * @since 5.8.0
	 */
	_addToTotalAttachments: function() {
		if ( this.mirroring ) {
			this.mirroring.totalAttachments = this.mirroring.totalAttachments + 1;
		}
	},
	/**
	 * @access private
	 *
	 * @param {wp.media.model.Attachments} attachment
	 * @param {wp.media.model.Attachments} attachments
	 * @param {Object} options
	 *
	 * @return {wp.media.model.Attachments} Returns itself to allow chaining.
	 */
	_validateHandler: function( attachment, attachments, options ) {
		// If we're not mirroring this `attachments` collection,
		// only retain the `silent` option.
		options = attachments === this.mirroring ? options : {
			silent: options && options.silent
		};

		return this.validate( attachment, options );
	},
	/**
	 * @access private
	 *
	 * @param {wp.media.model.Attachments} attachments
	 * @param {Object} options
	 * @return {wp.media.model.Attachments} Returns itself to allow chaining.
	 */
	_validateAllHandler: function( attachments, options ) {
		return this.validateAll( attachments, options );
	},
	/**
	 * Start mirroring another attachments collection, clearing out any models already
	 * in the collection.
	 *
	 * @param {wp.media.model.Attachments} The attachments collection to mirror.
	 * @return {wp.media.model.Attachments} Returns itself to allow chaining.
	 */
	mirror: function( attachments ) {
		if ( this.mirroring && this.mirroring === attachments ) {
			return this;
		}

		this.unmirror();
		this.mirroring = attachments;

		// Clear the collection silently. A `reset` event will be fired
		// when `observe()` calls `validateAll()`.
		this.reset( [], { silent: true } );
		this.observe( attachments );

		// Used for the search results.
		this.trigger( 'attachments:received', this );
		return this;
	},
	/**
	 * Stop mirroring another attachments collection.
	 */
	unmirror: function() {
		if ( ! this.mirroring ) {
			return;
		}

		this.unobserve( this.mirroring );
		delete this.mirroring;
	},
	/**
	 * Retrieve more attachments from the server for the collection.
	 *
	 * Only works if the collection is mirroring a Query Attachments collection,
	 * and forwards to its `more` method. This collection class doesn't have
	 * server persistence by itself.
	 *
	 * @param {Object} options
	 * @return {Promise}
	 */
	more: function( options ) {
		var deferred = jQuery.Deferred(),
			mirroring = this.mirroring,
			attachments = this;

		if ( ! mirroring || ! mirroring.more ) {
			return deferred.resolveWith( this ).promise();
		}
		/*
		 * If we're mirroring another collection, forward `more` to
		 * the mirrored collection. Account for a race condition by
		 * checking if we're still mirroring that collection when
		 * the request resolves.
		 */
		mirroring.more( options ).done( function() {
			if ( this === attachments.mirroring ) {
				deferred.resolveWith( this );
			}

			// Used for the search results.
			attachments.trigger( 'attachments:received', this );
		});

		return deferred.promise();
	},
	/**
	 * Whether there are more attachments that haven't been sync'd from the server
	 * that match the collection's query.
	 *
	 * Only works if the collection is mirroring a Query Attachments collection,
	 * and forwards to its `hasMore` method. This collection class doesn't have
	 * server persistence by itself.
	 *
	 * @return {boolean}
	 */
	hasMore: function() {
		return this.mirroring ? this.mirroring.hasMore() : false;
	},
	/**
	 * Holds the total number of attachments.
	 *
	 * @since 5.8.0
	 */
	totalAttachments: 0,

	/**
	 * Gets the total number of attachments.
	 *
	 * @since 5.8.0
	 *
	 * @return {number} The total number of attachments.
	 */
	getTotalAttachments: function() {
		return this.mirroring ? this.mirroring.totalAttachments : 0;
	},

	/**
	 * A custom Ajax-response parser.
	 *
	 * See trac ticket #24753.
	 *
	 * Called automatically by Backbone whenever a collection's models are returned
	 * by the server, in fetch. The default implementation is a no-op, simply
	 * passing through the JSON response. We override this to add attributes to
	 * the collection items.
	 *
	 * @param {Object|Array} response The raw response Object/Array.
	 * @param {Object} xhr
	 * @return {Array} The array of model attributes to be added to the collection
	 */
	parse: function( response, xhr ) {
		if ( ! _.isArray( response ) ) {
			  response = [response];
		}
		return _.map( response, function( attrs ) {
			var id, attachment, newAttributes;

			if ( attrs instanceof Backbone.Model ) {
				id = attrs.get( 'id' );
				attrs = attrs.attributes;
			} else {
				id = attrs.id;
			}

			attachment = wp.media.model.Attachment.get( id );
			newAttributes = attachment.parse( attrs, xhr );

			if ( ! _.isEqual( attachment.attributes, newAttributes ) ) {
				attachment.set( newAttributes );
			}

			return attachment;
		});
	},

	/**
	 * If the collection is a query, create and mirror an Attachments Query collection.
	 *
	 * @access private
	 * @param {Boolean} refresh Deprecated, refresh parameter no longer used.
	 */
	_requery: function() {
		var props;
		if ( this.props.get('query') ) {
			props = this.props.toJSON();
			this.mirror( wp.media.model.Query.get( props ) );
		}
	},
	/**
	 * If this collection is sorted by `menuOrder`, recalculates and saves
	 * the menu order to the database.
	 *
	 * @return {undefined|Promise}
	 */
	saveMenuOrder: function() {
		if ( 'menuOrder' !== this.props.get('orderby') ) {
			return;
		}

		/*
		 * Removes any uploading attachments, updates each attachment's
		 * menu order, and returns an object with an { id: menuOrder }
		 * mapping to pass to the request.
		 */
		var attachments = this.chain().filter( function( attachment ) {
			return ! _.isUndefined( attachment.id );
		}).map( function( attachment, index ) {
			// Indices start at 1.
			index = index + 1;
			attachment.set( 'menuOrder', index );
			return [ attachment.id, index ];
		}).object().value();

		if ( _.isEmpty( attachments ) ) {
			return;
		}

		return wp.media.post( 'save-attachment-order', {
			nonce:       wp.media.model.settings.post.nonce,
			post_id:     wp.media.model.settings.post.id,
			attachments: attachments
		});
	}
},/** @lends wp.media.model.Attachments */{
	/**
	 * A function to compare two attachment models in an attachments collection.
	 *
	 * Used as the default comparator for instances of wp.media.model.Attachments
	 * and its subclasses. @see wp.media.model.Attachments._changeOrderby().
	 *
	 * @param {Backbone.Model} a
	 * @param {Backbone.Model} b
	 * @param {Object} options
	 * @return {number} -1 if the first model should come before the second,
	 *                   0 if they are of the same rank and
	 *                   1 if the first model should come after.
	 */
	comparator: function( a, b, options ) {
		var key   = this.props.get('orderby'),
			order = this.props.get('order') || 'DESC',
			ac    = a.cid,
			bc    = b.cid;

		a = a.get( key );
		b = b.get( key );

		if ( 'date' === key || 'modified' === key ) {
			a = a || new Date();
			b = b || new Date();
		}

		// If `options.ties` is set, don't enforce the `cid` tiebreaker.
		if ( options && options.ties ) {
			ac = bc = null;
		}

		return ( 'DESC' === order ) ? wp.media.compare( a, b, ac, bc ) : wp.media.compare( b, a, bc, ac );
	},
	/** @namespace wp.media.model.Attachments.filters */
	filters: {
		/**
		 * @static
		 * Note that this client-side searching is *not* equivalent
		 * to our server-side searching.
		 *
		 * @param {wp.media.model.Attachment} attachment
		 *
		 * @this wp.media.model.Attachments
		 *
		 * @return {Boolean}
		 */
		search: function( attachment ) {
			if ( ! this.props.get('search') ) {
				return true;
			}

			return _.any(['title','filename','description','caption','name'], function( key ) {
				var value = attachment.get( key );
				return value && -1 !== value.search( this.props.get('search') );
			}, this );
		},
		/**
		 * @static
		 * @param {wp.media.model.Attachment} attachment
		 *
		 * @this wp.media.model.Attachments
		 *
		 * @return {boolean}
		 */
		type: function( attachment ) {
			var type = this.props.get('type'), atts = attachment.toJSON(), mime, found;

			if ( ! type || ( _.isArray( type ) && ! type.length ) ) {
				return true;
			}

			mime = atts.mime || ( atts.file && atts.file.type ) || '';

			if ( _.isArray( type ) ) {
				found = _.find( type, function (t) {
					return -1 !== mime.indexOf( t );
				} );
			} else {
				found = -1 !== mime.indexOf( type );
			}

			return found;
		},
		/**
		 * @static
		 * @param {wp.media.model.Attachment} attachment
		 *
		 * @this wp.media.model.Attachments
		 *
		 * @return {boolean}
		 */
		uploadedTo: function( attachment ) {
			var uploadedTo = this.props.get('uploadedTo');
			if ( _.isUndefined( uploadedTo ) ) {
				return true;
			}

			return uploadedTo === attachment.get('uploadedTo');
		},
		/**
		 * @static
		 * @param {wp.media.model.Attachment} attachment
		 *
		 * @this wp.media.model.Attachments
		 *
		 * @return {boolean}
		 */
		status: function( attachment ) {
			var status = this.props.get('status');
			if ( _.isUndefined( status ) ) {
				return true;
			}

			return status === attachment.get('status');
		}
	}
});

module.exports = Attachments;


/***/ }),

/***/ 9104:
/***/ ((module) => {

/**
 * wp.media.model.PostImage
 *
 * An instance of an image that's been embedded into a post.
 *
 * Used in the embedded image attachment display settings modal - @see wp.media.view.MediaFrame.ImageDetails.
 *
 * @memberOf wp.media.model
 *
 * @class
 * @augments Backbone.Model
 *
 * @param {int} [attributes]               Initial model attributes.
 * @param {int} [attributes.attachment_id] ID of the attachment.
 **/
var PostImage = Backbone.Model.extend(/** @lends wp.media.model.PostImage.prototype */{

	initialize: function( attributes ) {
		var Attachment = wp.media.model.Attachment;
		this.attachment = false;

		if ( attributes.attachment_id ) {
			this.attachment = Attachment.get( attributes.attachment_id );
			if ( this.attachment.get( 'url' ) ) {
				this.dfd = jQuery.Deferred();
				this.dfd.resolve();
			} else {
				this.dfd = this.attachment.fetch();
			}
			this.bindAttachmentListeners();
		}

		// Keep URL in sync with changes to the type of link.
		this.on( 'change:link', this.updateLinkUrl, this );
		this.on( 'change:size', this.updateSize, this );

		this.setLinkTypeFromUrl();
		this.setAspectRatio();

		this.set( 'originalUrl', attributes.url );
	},

	bindAttachmentListeners: function() {
		this.listenTo( this.attachment, 'sync', this.setLinkTypeFromUrl );
		this.listenTo( this.attachment, 'sync', this.setAspectRatio );
		this.listenTo( this.attachment, 'change', this.updateSize );
	},

	changeAttachment: function( attachment, props ) {
		this.stopListening( this.attachment );
		this.attachment = attachment;
		this.bindAttachmentListeners();

		this.set( 'attachment_id', this.attachment.get( 'id' ) );
		this.set( 'caption', this.attachment.get( 'caption' ) );
		this.set( 'alt', this.attachment.get( 'alt' ) );
		this.set( 'size', props.get( 'size' ) );
		this.set( 'align', props.get( 'align' ) );
		this.set( 'link', props.get( 'link' ) );
		this.updateLinkUrl();
		this.updateSize();
	},

	setLinkTypeFromUrl: function() {
		var linkUrl = this.get( 'linkUrl' ),
			type;

		if ( ! linkUrl ) {
			this.set( 'link', 'none' );
			return;
		}

		// Default to custom if there is a linkUrl.
		type = 'custom';

		if ( this.attachment ) {
			if ( this.attachment.get( 'url' ) === linkUrl ) {
				type = 'file';
			} else if ( this.attachment.get( 'link' ) === linkUrl ) {
				type = 'post';
			}
		} else {
			if ( this.get( 'url' ) === linkUrl ) {
				type = 'file';
			}
		}

		this.set( 'link', type );
	},

	updateLinkUrl: function() {
		var link = this.get( 'link' ),
			url;

		switch( link ) {
			case 'file':
				if ( this.attachment ) {
					url = this.attachment.get( 'url' );
				} else {
					url = this.get( 'url' );
				}
				this.set( 'linkUrl', url );
				break;
			case 'post':
				this.set( 'linkUrl', this.attachment.get( 'link' ) );
				break;
			case 'none':
				this.set( 'linkUrl', '' );
				break;
		}
	},

	updateSize: function() {
		var size;

		if ( ! this.attachment ) {
			return;
		}

		if ( this.get( 'size' ) === 'custom' ) {
			this.set( 'width', this.get( 'customWidth' ) );
			this.set( 'height', this.get( 'customHeight' ) );
			this.set( 'url', this.get( 'originalUrl' ) );
			return;
		}

		size = this.attachment.get( 'sizes' )[ this.get( 'size' ) ];

		if ( ! size ) {
			return;
		}

		this.set( 'url', size.url );
		this.set( 'width', size.width );
		this.set( 'height', size.height );
	},

	setAspectRatio: function() {
		var full;

		if ( this.attachment && this.attachment.get( 'sizes' ) ) {
			full = this.attachment.get( 'sizes' ).full;

			if ( full ) {
				this.set( 'aspectRatio', full.width / full.height );
				return;
			}
		}

		this.set( 'aspectRatio', this.get( 'customWidth' ) / this.get( 'customHeight' ) );
	}
});

module.exports = PostImage;


/***/ })

/******/ 	});
/************************************************************************/
/******/ 	// The module cache
/******/ 	var __webpack_module_cache__ = {};
/******/ 	
/******/ 	// The require function
/******/ 	function __webpack_require__(moduleId) {
/******/ 		// Check if module is in cache
/******/ 		var cachedModule = __webpack_module_cache__[moduleId];
/******/ 		if (cachedModule !== undefined) {
/******/ 			return cachedModule.exports;
/******/ 		}
/******/ 		// Create a new module (and put it into the cache)
/******/ 		var module = __webpack_module_cache__[moduleId] = {
/******/ 			// no module.id needed
/******/ 			// no module.loaded needed
/******/ 			exports: {}
/******/ 		};
/******/ 	
/******/ 		// Execute the module function
/******/ 		__webpack_modules__[moduleId](module, module.exports, __webpack_require__);
/******/ 	
/******/ 		// Return the exports of the module
/******/ 		return module.exports;
/******/ 	}
/******/ 	
/************************************************************************/
/**
 * @output wp-includes/js/media-models.js
 */

var Attachment, Attachments, l10n, media;

/** @namespace wp */
window.wp = window.wp || {};

/**
 * Create and return a media frame.
 *
 * Handles the default media experience.
 *
 * @alias wp.media
 * @memberOf wp
 * @namespace
 *
 * @param {Object} attributes The properties passed to the main media controller.
 * @return {wp.media.view.MediaFrame} A media workflow.
 */
media = wp.media = function( attributes ) {
	var MediaFrame = media.view.MediaFrame,
		frame;

	if ( ! MediaFrame ) {
		return;
	}

	attributes = _.defaults( attributes || {}, {
		frame: 'select'
	});

	if ( 'select' === attributes.frame && MediaFrame.Select ) {
		frame = new MediaFrame.Select( attributes );
	} else if ( 'post' === attributes.frame && MediaFrame.Post ) {
		frame = new MediaFrame.Post( attributes );
	} else if ( 'manage' === attributes.frame && MediaFrame.Manage ) {
		frame = new MediaFrame.Manage( attributes );
	} else if ( 'image' === attributes.frame && MediaFrame.ImageDetails ) {
		frame = new MediaFrame.ImageDetails( attributes );
	} else if ( 'audio' === attributes.frame && MediaFrame.AudioDetails ) {
		frame = new MediaFrame.AudioDetails( attributes );
	} else if ( 'video' === attributes.frame && MediaFrame.VideoDetails ) {
		frame = new MediaFrame.VideoDetails( attributes );
	} else if ( 'edit-attachments' === attributes.frame && MediaFrame.EditAttachments ) {
		frame = new MediaFrame.EditAttachments( attributes );
	}

	delete attributes.frame;

	media.frame = frame;

	return frame;
};

/** @namespace wp.media.model */
/** @namespace wp.media.view */
/** @namespace wp.media.controller */
/** @namespace wp.media.frames */
_.extend( media, { model: {}, view: {}, controller: {}, frames: {} });

// Link any localized strings.
l10n = media.model.l10n = window._wpMediaModelsL10n || {};

// Link any settings.
media.model.settings = l10n.settings || {};
delete l10n.settings;

Attachment = media.model.Attachment = __webpack_require__( 3343 );
Attachments = media.model.Attachments = __webpack_require__( 8266 );

media.model.Query = __webpack_require__( 1288 );
media.model.PostImage = __webpack_require__( 9104 );
media.model.Selection = __webpack_require__( 4134 );

/**
 * ========================================================================
 * UTILITIES
 * ========================================================================
 */

/**
 * A basic equality comparator for Backbone models.
 *
 * Used to order models within a collection - @see wp.media.model.Attachments.comparator().
 *
 * @param {mixed}  a  The primary parameter to compare.
 * @param {mixed}  b  The primary parameter to compare.
 * @param {string} ac The fallback parameter to compare, a's cid.
 * @param {string} bc The fallback parameter to compare, b's cid.
 * @return {number} -1: a should come before b.
 *                   0: a and b are of the same rank.
 *                   1: b should come before a.
 */
media.compare = function( a, b, ac, bc ) {
	if ( _.isEqual( a, b ) ) {
		return ac === bc ? 0 : (ac > bc ? -1 : 1);
	} else {
		return a > b ? -1 : 1;
	}
};

_.extend( media, /** @lends wp.media */{
	/**
	 * media.template( id )
	 *
	 * Fetch a JavaScript template for an id, and return a templating function for it.
	 *
	 * See wp.template() in `wp-includes/js/wp-util.js`.
	 *
	 * @borrows wp.template as template
	 */
	template: wp.template,

	/**
	 * media.post( [action], [data] )
	 *
	 * Sends a POST request to WordPress.
	 * See wp.ajax.post() in `wp-includes/js/wp-util.js`.
	 *
	 * @borrows wp.ajax.post as post
	 */
	post: wp.ajax.post,

	/**
	 * media.ajax( [action], [options] )
	 *
	 * Sends an XHR request to WordPress.
	 * See wp.ajax.send() in `wp-includes/js/wp-util.js`.
	 *
	 * @borrows wp.ajax.send as ajax
	 */
	ajax: wp.ajax.send,

	/**
	 * Scales a set of dimensions to fit within bounding dimensions.
	 *
	 * @param {Object} dimensions
	 * @return {Object}
	 */
	fit: function( dimensions ) {
		var width     = dimensions.width,
			height    = dimensions.height,
			maxWidth  = dimensions.maxWidth,
			maxHeight = dimensions.maxHeight,
			constraint;

		/*
		 * Compare ratios between the two values to determine
		 * which max to constrain by. If a max value doesn't exist,
		 * then the opposite side is the constraint.
		 */
		if ( ! _.isUndefined( maxWidth ) && ! _.isUndefined( maxHeight ) ) {
			constraint = ( width / height > maxWidth / maxHeight ) ? 'width' : 'height';
		} else if ( _.isUndefined( maxHeight ) ) {
			constraint = 'width';
		} else if (  _.isUndefined( maxWidth ) && height > maxHeight ) {
			constraint = 'height';
		}

		// If the value of the constrained side is larger than the max,
		// then scale the values. Otherwise return the originals; they fit.
		if ( 'width' === constraint && width > maxWidth ) {
			return {
				width : maxWidth,
				height: Math.round( maxWidth * height / width )
			};
		} else if ( 'height' === constraint && height > maxHeight ) {
			return {
				width : Math.round( maxHeight * width / height ),
				height: maxHeight
			};
		} else {
			return {
				width : width,
				height: height
			};
		}
	},
	/**
	 * Truncates a string by injecting an ellipsis into the middle.
	 * Useful for filenames.
	 *
	 * @param {string} string
	 * @param {number} [length=30]
	 * @param {string} [replacement=&hellip;]
	 * @return {string} The string, unless length is greater than string.length.
	 */
	truncate: function( string, length, replacement ) {
		length = length || 30;
		replacement = replacement || '&hellip;';

		if ( string.length <= length ) {
			return string;
		}

		return string.substr( 0, length / 2 ) + replacement + string.substr( -1 * length / 2 );
	}
});

/**
 * ========================================================================
 * MODELS
 * ========================================================================
 */
/**
 * wp.media.attachment
 *
 * @static
 * @param {string} id A string used to identify a model.
 * @return {wp.media.model.Attachment}
 */
media.attachment = function( id ) {
	return Attachment.get( id );
};

/**
 * A collection of all attachments that have been fetched from the server.
 *
 * @static
 * @member {wp.media.model.Attachments}
 */
Attachments.all = new Attachments();

/**
 * wp.media.query
 *
 * Shorthand for creating a new Attachments Query.
 *
 * @param {Object} [props]
 * @return {wp.media.model.Attachments}
 */
media.query = function( props ) {
	return new Attachments( null, {
		props: _.extend( _.defaults( props || {}, { orderby: 'date' } ), { query: true } )
	});
};

/******/ })()
;
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بين التربية والتقنية هل ينتج العالم الافتراضي جيلاً مثقفًا أم معزولًا؟

كتبت شروق عارف

في ظل التطور التكنولوجي الحادث والابتكارات الجديدة ظهر العالم الافتراضي الذي أحدث ثورة في كافة المجالات مما جعلنا نطرح سؤال مهم ماذا لو أصبح التعليم مرتبط بالعالم الافتراضي؟ وكيف سيؤثر هذا الربط على الطلاب وتحصيلهم الأكاديمي ؟
  ما هو العالم الافتراضي والميتافيرس؟                                                                                            
في البداية علينا تعريف العالم الافتراضي والميتافيرس العالم الافتراضي يعد تقنية تسمح للمستخدمين بالانخراط في بيئة ثلاثية الأبعاد و يتم إنشاؤها من خلال الحاسوب ويتيح العالم الافتراضي للمستخدمين الشعور بأنهم حاضرين في هذا العالم يحدث ذلك من خلال استخدام نظارات مخصصة كما عرف المركز الوطني للتعليم الإلكتروني العالم الافتراضي بأنه بيئة افتراضية بالكامل
أما الميتافيرس فهو عبارة عن عالم رقمي ثلاثي الأبعاد يحاكي الواقع ويتيح التفاعل الاجتماعي والترفيهي بمعنى أوضح يعد بيئة مفتوحة تمثل العالم الحقيقي تتيح لأي شخص التحرك في أي مكان داخل العالم الافتراضي هذه التقنية المتقدمة تخلق بيئة افتراضية تتيح للمستخدمين التفاعل معها بشكل واقعي
‏ التعليم في العالم الافتراضي
‏ في حالة ربط التعليم بالعالم الافتراضي سوف يحدث ذلك طفرة في أساليب التدريس من خلال خلق موارد تعليمية جديدة مما سيساهم بشكل كبير في تحسين تجربة التعليم من خلال تعزيز المشاركة وزيادة الاحتفاظ بالمعلومات سيتم ذلك من خلال إدخال الطالب في بيئة ثلاثية الأبعاد مما سيتيح له تجربة تعليمية فريدة من نوعها
مزايا وتحديات ربط التعليم بالعالم الافتراضي                                                                                     
من أهم المزايا التي يقدمها العالم الافتراضي للطلاب هو إعدادهم للعمل في المستقبل وذلك من خلال تزويدهم بخبرات لا حصر لها كما أن ربط التعليم بالعالم الافتراضي سيساهم بشكل كبير في زيادة القدرة على الاحتفاظ بالمعلومات بالإضافة إلى ذلك يمكن للعالم الافتراضي توفير تجارب تعليمية فريدة من نوعها باستخدام تقنية الواقع الافتراضي التي تتيح نقل الطلاب إلى أماكن وبيئات مختلفة قد لا يتمكنون من الوصول إليها بطرق تقليدية
‏ ومع ذلك، تواجه هذه الفوائد عدة تحديات أبرزها التكلفة العالية حيث تعتبر معدات وبرامج الواقع الافتراضي باهظة الثمن بالإضافة إلى ذلك هناك نقص في تدريب المعلمين على استخدام تقنيات الواقع الافتراضي مما قد يؤدي إلى انخفاض في نتائج التعلم فعلى سبيل المثال تجربة نظام التابلت في أول سنة حققت فشل ذريع وذلك بسبب عدم فهم المعلمين والطلاب لطبيعة النظام

آراء متباينة حول فاعلية العالم الافتراضي
أوضح محمد عصام مدرس الفلسفة وعلم النفس في المرحلة الثانوية أن فكرة ربط التعليم بالعالم الافتراضي تعتبر مميزة للغاية ولكن أكد على ضرورة تطبيقها بشكل صحيح ومدروس وأضاف أن الإمكانيات الحالية في مصر لا تسمح بتطبيق هذه التقنية كما أضاف الاعتماد المفرط على التكنولوجيا في التعليم سوف يكون له آثار سلبية على الطلاب بالإضافة إلى أن العالم الافتراضي لا يمكن أن يحل محل المعلم
من جانبه قال محمود محسن مدرس اللغة العربية بالمرحلة الإعدادية إن إدخال العالم الافتراضي في التعليم قد يوثر بشكل إجابي في العملية التعليمية من حيث الشكل والمحتوى لكنه شدد على أهمية المعلم في التعليم موكدا أن التفاعل المباشر بين الطالب والمعلم يظل عنصرًا أساسيا لا يمكن الاستغناء عنه وأضاف محمود أن التعليم لا يقتصر فقط على المعلومات بل يشمل القيم والتربية والتوجيه وهي أمور يصعب نقلها بشكل فعال من خلال بيئة افتراضية بحتة
وعلي جانب اخر أضاف أحمد فؤاد مدرس الدراسات في المرحلة الابتدائية أن استخدام العالم الافتراضي في التعليم سيسهم بشكل كبير في تحسين مستوى تحصيل الطلاب خاصة في المرحلة الابتدائية وأوضح أن دمج التكنولوجيا في العملية التعليمية سيجعل الدراسة أكثر متعة مما قد يزيد من دافعية الطلاب للتعلم وتحسين استيعابهم للمحتوى

‏ يمكن القول إن ربط التعليم بالعالم الافتراضي قد يسهم بشكل كبير في توسيع أفاقنا الفكرية وسوف يجعل التجربة التعليمية أكثر متعة ولكن مع ذلك يجب التعامل مع هذه التقنية بحذر حتى نتجنب الأثار السلبية وعلينا التأكد أن العالم الافتراضي لا يمكن أن يحلل محل المعلم

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