/**
 * File customizer.js.
 *
 * Theme Customizer enhancements for a better user experience.
 *
 * Contains handlers to make Theme Customizer preview reload changes asynchronously.
 */

( function ( $ ) {
	var style = $( '#flash-color-scheme-css' ),
		api = wp.customize;

	if ( ! style.length ) {
		style = $( 'head' ).append( '<style type="text/css" id="flash-color-scheme-css" />' )
			.find( '#flash-color-scheme-css' );
	}

	// Site title.
	api( 'blogname', function ( value ) {
		value.bind( function ( to ) {
			$( '.site-title a' ).text( to );
		} );
	} );

	// Site tagline.
	api( 'blogdescription', function ( value ) {
		value.bind( function ( to ) {
			$( '.site-description' ).text( to );
		} );
	} );

	// Header text color.
	api( 'header_textcolor', function ( value ) {
		value.bind( function ( to ) {
			if ( 'blank' === to ) {
				$( '.site-title, .site-description' ).css( {
					'clip': 'rect(1px, 1px, 1px, 1px)',
					'position': 'absolute'
				} );
			} else {
				$( '.site-title, .site-description' ).css( {
					'clip': 'auto',
					'position': 'relative'
				} );
			}
		} );
	} );

	// Add custom-background-image body class when background image is added.
	api( 'background_image', function ( value ) {
		value.bind( function ( to ) {
			$( 'body' ).toggleClass( 'custom-background-image', '' !== to );
		} );
	} );

	// Color Scheme CSS.
	api.bind( 'preview-ready', function () {
		api.preview.bind( 'update-color-scheme-css', function ( css ) {
			style.html( css );
		} );
	} );
} )( jQuery );