67 lines
1.8 KiB
JavaScript
67 lines
1.8 KiB
JavaScript
/*globals _ */
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/**
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* wp.media.selectionSync
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*
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* Sync an attachments selection in a state with another state.
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*
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* Allows for selecting multiple images in the Insert Media workflow, and then
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* switching to the Insert Gallery workflow while preserving the attachments selection.
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*
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* @mixin
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*/
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var selectionSync = {
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/**
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* @since 3.5.0
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*/
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syncSelection: function() {
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var selection = this.get('selection'),
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manager = this.frame._selection;
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if ( ! this.get('syncSelection') || ! manager || ! selection ) {
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return;
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}
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// If the selection supports multiple items, validate the stored
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// attachments based on the new selection's conditions. Record
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// the attachments that are not included; we'll maintain a
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// reference to those. Other attachments are considered in flux.
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if ( selection.multiple ) {
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selection.reset( [], { silent: true });
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selection.validateAll( manager.attachments );
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manager.difference = _.difference( manager.attachments.models, selection.models );
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}
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// Sync the selection's single item with the master.
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selection.single( manager.single );
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},
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/**
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* Record the currently active attachments, which is a combination
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* of the selection's attachments and the set of selected
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* attachments that this specific selection considered invalid.
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* Reset the difference and record the single attachment.
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*
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* @since 3.5.0
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*/
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recordSelection: function() {
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var selection = this.get('selection'),
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manager = this.frame._selection;
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if ( ! this.get('syncSelection') || ! manager || ! selection ) {
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return;
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}
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if ( selection.multiple ) {
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manager.attachments.reset( selection.toArray().concat( manager.difference ) );
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manager.difference = [];
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} else {
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manager.attachments.add( selection.toArray() );
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}
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manager.single = selection._single;
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}
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};
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module.exports = selectionSync;
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