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a5478d7adb
* The way that the JS modules for media are currently set up turns the existing global `wp.media` namespace into a read-only API, this is bad. * For the existing module implementation to work with plugins, those looking to override or extend a class would have to modify their own plugin to use `browserify` - we can't expect this to happen * Because the general way that plugins override media classes is via machete (resetting them to something else), we cannot use `require( 'module' )` in the internal code for media modules We CAN continue to use `require( 'fun/js' )` in the manifests for media. Future code/projects should carefully consider what is made to be public API. In 3.5, EVERYTHING was made public, so everything shall remain public. See #31684, #28510. Built from https://develop.svn.wordpress.org/trunk@31935 git-svn-id: http://core.svn.wordpress.org/trunk@31914 1a063a9b-81f0-0310-95a4-ce76da25c4cd
98 lines
2.5 KiB
JavaScript
98 lines
2.5 KiB
JavaScript
/*globals wp, _ */
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/**
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* wp.media.model.Selection
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*
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* A selection of attachments.
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*
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* @class
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* @augments wp.media.model.Attachments
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* @augments Backbone.Collection
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*/
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var Attachments = wp.media.model.Attachments,
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Selection;
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Selection = Attachments.extend({
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/**
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* Refresh the `single` model whenever the selection changes.
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* Binds `single` instead of using the context argument to ensure
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* it receives no parameters.
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*
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* @param {Array} [models=[]] Array of models used to populate the collection.
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* @param {Object} [options={}]
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*/
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initialize: function( models, options ) {
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/**
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* call 'initialize' directly on the parent class
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*/
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Attachments.prototype.initialize.apply( this, arguments );
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this.multiple = options && options.multiple;
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this.on( 'add remove reset', _.bind( this.single, this, false ) );
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},
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/**
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* If the workflow does not support multi-select, clear out the selection
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* before adding a new attachment to it.
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*
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* @param {Array} models
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* @param {Object} options
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* @returns {wp.media.model.Attachment[]}
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*/
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add: function( models, options ) {
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if ( ! this.multiple ) {
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this.remove( this.models );
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}
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/**
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* call 'add' directly on the parent class
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*/
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return Attachments.prototype.add.call( this, models, options );
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},
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/**
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* Fired when toggling (clicking on) an attachment in the modal.
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*
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* @param {undefined|boolean|wp.media.model.Attachment} model
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*
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* @fires wp.media.model.Selection#selection:single
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* @fires wp.media.model.Selection#selection:unsingle
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*
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* @returns {Backbone.Model}
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*/
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single: function( model ) {
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var previous = this._single;
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// If a `model` is provided, use it as the single model.
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if ( model ) {
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this._single = model;
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}
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// If the single model isn't in the selection, remove it.
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if ( this._single && ! this.get( this._single.cid ) ) {
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delete this._single;
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}
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this._single = this._single || this.last();
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// If single has changed, fire an event.
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if ( this._single !== previous ) {
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if ( previous ) {
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previous.trigger( 'selection:unsingle', previous, this );
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// If the model was already removed, trigger the collection
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// event manually.
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if ( ! this.get( previous.cid ) ) {
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this.trigger( 'selection:unsingle', previous, this );
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}
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}
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if ( this._single ) {
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this._single.trigger( 'selection:single', this._single, this );
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}
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}
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// Return the single model, or the last model as a fallback.
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return this._single;
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}
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});
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module.exports = Selection;
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