Integrate media with the custom background page. fixes #21818, see #21390.

git-svn-id: http://core.svn.wordpress.org/trunk@22502 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/custom-background.php

@@ -106,7 +106,7 @@ class Custom_Background {
 		);
 
 		add_thickbox();
-		wp_enqueue_script('media-upload');
+		wp_enqueue_media();
 		wp_enqueue_script('custom-background');
 		wp_enqueue_style('wp-color-picker');
 	}
@@ -269,7 +269,9 @@ if ( get_background_image() ) {
 	?>
 	<p>
 		<label for="choose-from-library-link"><?php _e( 'Or choose an image from your media library:' ); ?></label><br />
-		<a id="choose-from-library-link" class="button thickbox" href="<?php echo esc_url( $image_library_url ); ?>"><?php _e( 'Choose Image' ); ?></a>
+		<a id="choose-from-library-link" class="button"
+			data-choose="<?php esc_attr_e( 'Choose a Background Image' ); ?>"
+			data-update="<?php esc_attr_e( 'Set as background' ); ?>"><?php _e( 'Choose Image' ); ?></a>
 	</p>
 	</form>
 </td>

wp-admin/js/custom-background.js

@@ -1,7 +1,7 @@
 (function($) {
-
 	$(document).ready(function() {
-		var bgImage = $("#custom-background-image");
+		var bgImage = $("#custom-background-image"),
+			frame;
 
 		$('#background-color').wpColorPicker({
 			change: function( event, ui ) {
@@ -19,6 +19,45 @@
 		$('input[name="background-repeat"]').change(function() {
 			bgImage.css('background-repeat', $(this).val());
 		});
+
+		$('#choose-from-library-link').click( function( event ) {
+			var $el = $(this);
+
+			event.preventDefault();
+
+			if ( frame ) {
+				frame.open();
+				return;
+			}
+
+			frame = wp.media({
+				title:     $el.data('choose'),
+				library:   {
+					type: 'image'
+				}
 			});
 
+			frame.toolbar.on( 'activate:select', function() {
+				frame.toolbar.view().add({
+					select: {
+						style: 'primary',
+						text:  $el.data('update'),
+
+						click: function() {
+							var attachment = frame.state().get('selection').first();
+							$.post( ajaxurl, {
+								action: 'set-background-image',
+								attachment_id: attachment.id,
+								size: 'full'
+							}, function() {
+								window.location.reload();
+							});
+						}
+					}
+				});
+			});
+
+			frame.state('library');
+		});
+	});
 })(jQuery);

wp-includes/script-loader.php

@@ -501,7 +501,7 @@ function wp_default_scripts( &$scripts ) {
 		) );
 
 		$scripts->add( 'custom-header', "/wp-admin/js/custom-header.js", array( 'jquery-masonry' ), false, 1 );
-		$scripts->add( 'custom-background', "/wp-admin/js/custom-background$suffix.js", array( 'wp-color-picker' ), false, 1 );
+		$scripts->add( 'custom-background', "/wp-admin/js/custom-background$suffix.js", array( 'wp-color-picker', 'media-views' ), false, 1 );
 		$scripts->add( 'media-gallery', "/wp-admin/js/media-gallery$suffix.js", array('jquery'), false, 1 );
 	}
 }