/**
 * @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);