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/** |
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* Choose Attachment(s) from the Media Library, inserting into the DOM |
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* hidden field and output preview. |
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* |
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* @package WPZincDashboardWidget |
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* @author WP Zinc |
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*/ |
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|
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( function ( $ ) { |
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|
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// Make Attachment(s) sortable. |
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$( '.wpzinc-media-library-selector' ).each( |
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function () { |
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|
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// Determine if this Media Library selector instance supports multiple Attachments. |
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var multiple = $( this ).data( 'multiple' ); |
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if ( typeof multiple == 'undefined' ) { |
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multiple = false; |
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} |
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|
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// Bail if multiple Attachments are not supported, as we don't need to sort a single Attachment. |
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if ( ! multiple ) { |
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return; |
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} |
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|
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// Initialize jQuery UI sortable. |
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$( 'ul', $( this ) ).sortable(); |
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|
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} |
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); |
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|
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// Open Media Library Backbone Modal to allow selection of attachments. |
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$( '#wpbody' ).on( |
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'click', |
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'.wpzinc-media-library-insert', |
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function ( e ) { |
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|
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// Prevent default action. |
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e.preventDefault(); |
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|
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// Get container and attributes. |
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var container = $( this ).closest( '.wpzinc-media-library-selector' ), |
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input_name = $( container ).data( 'input-name' ), |
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input_url = $( container ).data( 'input-url' ), |
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output_size = $( container ).data( 'output-size' ), // The size of the image to output. |
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file_type = $( container ).data( 'file-type' ), // The file types that can be selected. |
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multiple = $( container ).data( 'multiple' ), // If multiple attachments can be selected. |
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limit = $( container ).data( 'limit' ); // The number of attachments that can be selected. |
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|
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// Define some attributes if they're not defined in the data- attributes. |
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if ( typeof input_url == 'undefined' ) { |
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input_url = false; |
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} |
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if ( typeof output_size == 'undefined' ) { |
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output_size = 'thumbnail'; |
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} |
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if ( typeof file_type == 'undefined' ) { |
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file_type = 'image'; |
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} |
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if ( typeof multiple == 'undefined' ) { |
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multiple = false; |
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} |
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if ( typeof limit == 'undefined' ) { |
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limit = 99999; |
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} |
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|
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// Get existing Attachment(s) that were selected. |
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var existing_selected_attachment_ids = []; |
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$( 'input[type=hidden]', $( container ) ).each( |
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function () { |
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existing_selected_attachment_ids.push( $( this ).val() ); |
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} |
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); |
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|
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// If plugin_media_manager has already been defined, open it now. |
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if ( wpzinc_plugin_media_manager ) { |
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wpzinc_plugin_media_manager.open(); |
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return; |
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} |
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|
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// Setup new wp.media instance, if it's not already set by one of our plugins. |
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var wpzinc_plugin_media_manager = wp.media( |
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{ |
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title: 'Choose Item', |
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button: { |
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text: 'Select' |
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}, |
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library: { |
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type: file_type |
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}, |
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multiple: ( multiple ? 'add' : false ) |
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} |
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); |
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|
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// When the modal is opened, select any existing Attachments that were previously selected. |
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wpzinc_plugin_media_manager.on( |
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'open', |
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function () { |
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|
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// Get selected attachments. |
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var selection = wpzinc_plugin_media_manager.state().get( 'selection' ); |
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|
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// Add existing Attachment(s) that were selected to the selection, so they're |
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// marked as selected in the modal. |
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existing_selected_attachment_ids.forEach( |
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function ( id ) { |
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attachment = wp.media.attachment( id ); |
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attachment.fetch(); |
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selection.add( attachment ? [attachment] : [] ); |
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} |
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); |
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|
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} |
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); |
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|
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// Remove all attached 'select' events. |
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wpzinc_plugin_media_manager.off( 'select' ); |
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wpzinc_plugin_media_manager.off( 'selection:toggle' ); |
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|
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// When an Attachment is selected or deselected, check that the total |
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// number of selected Attachments doesn't exceed the limit. |
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// If it does, remove (deselect) the selected attachment. |
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wpzinc_plugin_media_manager.on( |
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'selection:toggle', |
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function () { |
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|
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var selection = wpzinc_plugin_media_manager.state().get( 'selection' ); |
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|
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if ( selection.length > limit ) { |
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selection.remove( selection.last() ); |
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} |
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|
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} |
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); |
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|
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// When the Select button in the modal is clicked, insert. |
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wpzinc_plugin_media_manager.on( |
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'select', |
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function () { |
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|
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// Get selected attachments. |
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var selection = wpzinc_plugin_media_manager.state().get( 'selection' ).map( |
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function ( attachment ) { |
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|
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attachment.toJSON(); |
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return attachment; |
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|
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} |
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); |
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|
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// Clear Attachments HTML. |
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$( 'ul', $( container ) ).html( '' ); |
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|
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// Iterate through selected attachments, outputting HTML for each. |
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var length = selection.length; |
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for ( var i = 0; i < length; i++ ) { |
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|
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// Get this attachment's ID and URL. |
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var attachment = selection[ i ], |
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attachment_id = attachment.get( 'id' ), |
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attachment_url = attachment.get( 'url' ); |
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|
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// Build HTML. |
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var html = '<li class="wpzinc-media-library-attachment">'; |
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html += '<a href="#" class="wpzinc-media-library-insert">'; |
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html += '<input type="hidden" name="' + input_name + '" value="' + attachment_id + '" />'; |
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|
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// Build Output Preview, depending on the Attachment's type. |
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switch ( attachment.attributes.type ) { |
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|
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case 'image': |
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// If the image size we're requesting exists, use that instead. |
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if ( typeof attachment.attributes.sizes[ output_size ] !== 'undefined' ) { |
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attachment_url = attachment.attributes.sizes[ output_size ].url; |
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} |
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|
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html += '<img src="' + attachment_url + '" />'; |
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|
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// Include URL as hidden field if required. |
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if ( input_url ) { |
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html += '<input type="hidden" name="' + input_url + '" value="' + attachment.attributes.url + '" />'; |
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} |
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break; |
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|
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default: |
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html += attachment.attributes.filename; |
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break; |
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|
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} |
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|
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// Finish building HTML. |
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html += '<a href="#" class="wpzinc-media-library-remove">Remove</a>'; |
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html += '</li>'; |
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|
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// Inject. |
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$( 'ul', $( container ) ).append( html ); |
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|
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// Trigger event so other JS can hook into when an attachment is added. |
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$( 'body' ).trigger( 'wpzinc-media-library-attachment-added' ); |
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|
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} |
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|
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} |
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); |
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|
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// Open the Media View. |
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wpzinc_plugin_media_manager.open(); |
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|
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} |
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); |
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|
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// Removes a selected Attachment. |
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$( '#wpbody' ).on( |
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'click', |
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'.wpzinc-media-library-remove', |
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function ( e ) { |
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|
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// Prevent default action. |
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e.preventDefault(); |
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|
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// Remove. |
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$( this ).closest( '.wpzinc-media-library-attachment' ).remove(); |
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|
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} |
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); |
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|
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} ( jQuery ) ); |
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|
