/**

 * @output wp-admin/js/custom-background.js

 */

/* global ajaxurl */

/**

 * Registers all events for customizing the background.

 *

 * @since 3.0.0

 *

 * @requires jQuery

 */

(function($) {

	$( function() {

		var frame,

			bgImage = $( '#custom-background-image' );

		/**

		 * Instantiates the WordPress color picker and binds the change and clear events.

		 *

		 * @since 3.5.0

		 *

		 * @return {void}

		 */

		$('#background-color').wpColorPicker({

			change: function( event, ui ) {

				bgImage.css('background-color', ui.color.toString());

			},

			clear: function() {

				bgImage.css('background-color', '');

			}

		});

		/**

		 * Alters the background size CSS property whenever the background size input has changed.

		 *

		 * @since 4.7.0

		 *

		 * @return {void}

		 */

		$( 'select[name="background-size"]' ).on( 'change', function() {

			bgImage.css( 'background-size', $( this ).val() );

		});

		/**

		 * Alters the background position CSS property whenever the background position input has changed.

		 *

		 * @since 4.7.0

		 *

		 * @return {void}

		 */

		$( 'input[name="background-position"]' ).on( 'change', function() {

			bgImage.css( 'background-position', $( this ).val() );

		});

		/**

		 * Alters the background repeat CSS property whenever the background repeat input has changed.

		 *

		 * @since 3.0.0

		 *

		 * @return {void}

		 */

		$( 'input[name="background-repeat"]' ).on( 'change',  function() {

			bgImage.css( 'background-repeat', $( this ).is( ':checked' ) ? 'repeat' : 'no-repeat' );

		});

		/**

		 * Alters the background attachment CSS property whenever the background attachment input has changed.

		 *

		 * @since 4.7.0

		 *

		 * @return {void}

		 */

		$( 'input[name="background-attachment"]' ).on( 'change', function() {

			bgImage.css( 'background-attachment', $( this ).is( ':checked' ) ? 'scroll' : 'fixed' );

		});

		/**

		 * Binds the event for opening the WP Media dialog.

		 *

		 * @since 3.5.0

		 *

		 * @return {void}

		 */

		$('#choose-from-library-link').on( 'click', function( event ) {

			var $el = $(this);

			event.preventDefault();

			// If the media frame already exists, reopen it.

			if ( frame ) {

				frame.open();

				return;

			}

			// Create the media frame.

			frame = wp.media.frames.customBackground = wp.media({

				// Set the title of the modal.

				title: $el.data('choose'),

				// Tell the modal to show only images.

				library: {

					type: 'image'

				},

				// Customize the submit button.

				button: {

					// Set the text of the button.

					text: $el.data('update'),

					/*

					 * Tell the button not to close the modal, since we're

					 * going to refresh the page when the image is selected.

					 */

					close: false

				}

			});

			/**

			 * When an image is selected, run a callback.

			 *

			 * @since 3.5.0

			 *

			 * @return {void}

 			 */

			frame.on( 'select', function() {

				// Grab the selected attachment.

				var attachment = frame.state().get('selection').first();

				var nonceValue = $( '#_wpnonce' ).val() || '';

				// Run an Ajax request to set the background image.

				$.post( ajaxurl, {

					action: 'set-background-image',

					attachment_id: attachment.id,

					_ajax_nonce: nonceValue,

					size: 'full'

				}).done( function() {

					// When the request completes, reload the window.

					window.location.reload();

				});

			});

			// Finally, open the modal.

			frame.open();

		});

	});

})(jQuery);