Wordpress/wp-admin/custom-header.php

<?php
/**
 * The custom header image script.
 *
 * @package WordPress
 * @subpackage Administration
 */

/**
 * The custom header image class.
 *
 * @since 2.1.0
 * @package WordPress
 * @subpackage Administration
 */
class Custom_Image_Header {

	/**
	 * Callback for administration header.
	 *
	 * @var callback
	 * @since 2.1.0
	 * @access private
	 */
	var $admin_header_callback;

	/**
	 * Callback for header div.
	 *
	 * @var callback
	 * @since 3.0.0
	 * @access private
	 */
	var $admin_image_div_callback;

	/**
	 * Holds default headers.
	 *
	 * @var array
	 * @since 3.0.0
	 * @access private
	 */
	var $default_headers = array();

	/**
	 * Holds custom headers uploaded by the user
	 *
	 * @var array
	 * @since 3.2.0
	 * @access private
	 */
	var $uploaded_headers = array();

	/**
	 * Holds the page menu hook.
	 *
	 * @var string
	 * @since 3.0.0
	 * @access private
	 */
	var $page = '';

	/**
	 * Constructor - Register administration header callback.
	 *
	 * @since 2.1.0
	 * @param callback $admin_header_callback
	 * @param callback $admin_image_div_callback Optional custom image div output callback.
	 * @return Custom_Image_Header
	 */
	function __construct($admin_header_callback, $admin_image_div_callback = '') {
		$this->admin_header_callback = $admin_header_callback;
		$this->admin_image_div_callback = $admin_image_div_callback;

		add_action( 'admin_menu', array( $this, 'init' ) );
	}

	/**
	 * Set up the hooks for the Custom Header admin page.
	 *
	 * @since 2.1.0
	 */
	function init() {
		if ( ! current_user_can('edit_theme_options') )
			return;

		$this->page = $page = add_theme_page(__('Header'), __('Header'), 'edit_theme_options', 'custom-header', array(&$this, 'admin_page'));

		add_action("admin_print_scripts-$page", array(&$this, 'js_includes'));
		add_action("admin_print_styles-$page", array(&$this, 'css_includes'));
		add_action("admin_head-$page", array(&$this, 'help') );
		add_action("admin_head-$page", array(&$this, 'take_action'), 50);
		add_action("admin_head-$page", array(&$this, 'js'), 50);
		add_action("admin_head-$page", $this->admin_header_callback, 51);

		add_filter( 'attachment_fields_to_edit', array( $this, 'attachment_fields_to_edit' ), 10, 2 );
		add_filter( 'media_upload_tabs', array( $this, 'filter_upload_tabs' ) );
	}

	/**
	 * Adds contextual help.
	 *
	 * @since 3.0.0
	 */
	function help() {
		get_current_screen()->add_help_tab( array(
			'id'      => 'overview',
			'title'   => __('Overview'),
			'content' =>
				'<p>' . __( 'You can set a custom image header for your site. Simply upload the image and crop it, and the new header will go live immediately.' ) . '</p>' .
				'<p>' . __( 'If you want to discard your custom header and go back to the default included in your theme, click on the buttons to remove the custom image and restore the original header image.' ) . '</p>' .
				'<p>' . __( 'Some themes come with additional header images bundled. If you see multiple images displayed, select the one you&#8217;d like and click the Save Changes button.' ) . '</p>'
		) );

		get_current_screen()->set_help_sidebar(
			'<p><strong>' . __( 'For more information:' ) . '</strong></p>' .
			'<p>' . __( '<a href="http://codex.wordpress.org/Appearance_Header_Screen" target="_blank">Documentation on Custom Header</a>' ) . '</p>' .
			'<p>' . __( '<a href="http://wordpress.org/support/" target="_blank">Support Forums</a>' ) . '</p>'
		);
	}

	/**
	 * Get the current step.
	 *
	 * @since 2.6.0
	 *
	 * @return int Current step
	 */
	function step() {
		if ( ! isset( $_GET['step'] ) )
			return 1;

		$step = (int) $_GET['step'];
		if ( $step < 1 || 3 < $step ||
			( 2 == $step && ! wp_verify_nonce( $_REQUEST['_wpnonce-custom-header-upload'], 'custom-header-upload' ) ) ||
			( 3 == $step && ! wp_verify_nonce( $_REQUEST['_wpnonce'], 'custom-header-crop-image' ) )
		)
			return 1;

		return $step;
	}

	/**
	 * Set up the enqueue for the JavaScript files.
	 *
	 * @since 2.1.0
	 */
	function js_includes() {
		$step = $this->step();

		if ( ( 1 == $step || 3 == $step ) ) {
			add_thickbox();
			wp_enqueue_script( 'media-upload' );
			wp_enqueue_script( 'custom-header' );
			if ( current_theme_supports( 'custom-header', 'header-text' ) )
				wp_enqueue_script('farbtastic');
		} elseif ( 2 == $step ) {
			wp_enqueue_script('imgareaselect');
		}
	}

	/**
	 * Set up the enqueue for the CSS files
	 *
	 * @since 2.7
	 */
	function css_includes() {
		$step = $this->step();

		if ( ( 1 == $step || 3 == $step ) && current_theme_supports( 'custom-header', 'header-text' ) )
			wp_enqueue_style('farbtastic');
		elseif ( 2 == $step )
			wp_enqueue_style('imgareaselect');
	}

	/**
	 * Execute custom header modification.
	 *
	 * @since 2.6.0
	 */
	function take_action() {
		if ( ! current_user_can('edit_theme_options') )
			return;

		if ( empty( $_POST ) )
			return;

		$this->updated = true;

		if ( isset( $_POST['resetheader'] ) ) {
			check_admin_referer( 'custom-header-options', '_wpnonce-custom-header-options' );
			$this->process_default_headers();
			$default = get_theme_support( 'custom-header', 'default-image' );
			$default = sprintf( $default, get_template_directory_uri(), get_stylesheet_directory_uri() );
			foreach ( $this->default_headers as $header => $details ) {
				if ( $details['url'] == $default ) {
					$default_data = $details;
					break;
				}
			}
			set_theme_mod( 'header_image', $default );
			if ( empty( $default_data['width'] ) )
				$default_data['width'] = get_theme_support( 'custom-header', 'width' );
			if ( empty( $default_data['height'] ) )
				$default_data['height'] = get_theme_support( 'custom-header', 'height' );
			set_theme_mod( 'header_image_data', (object) $default_data );
			return;
		}

		if ( isset( $_POST['resettext'] ) ) {
			check_admin_referer( 'custom-header-options', '_wpnonce-custom-header-options' );
			remove_theme_mod('header_textcolor');
			return;
		}

		if ( isset( $_POST['removeheader'] ) ) {
			check_admin_referer( 'custom-header-options', '_wpnonce-custom-header-options' );
			set_theme_mod( 'header_image', 'remove-header' );
			return;
		}

		if ( isset( $_POST['text-color'] ) && ! isset( $_POST['display-header-text'] ) ) {
			check_admin_referer( 'custom-header-options', '_wpnonce-custom-header-options' );
			set_theme_mod( 'header_textcolor', 'blank' );
		} elseif ( isset( $_POST['text-color'] ) ) {
			check_admin_referer( 'custom-header-options', '_wpnonce-custom-header-options' );
			$_POST['text-color'] = str_replace( '#', '', $_POST['text-color'] );
			$color = preg_replace('/[^0-9a-fA-F]/', '', $_POST['text-color']);
			if ( strlen($color) == 6 || strlen($color) == 3 )
				set_theme_mod('header_textcolor', $color);
			elseif ( ! $color )
				set_theme_mod( 'header_textcolor', 'blank' );
		}

		if ( isset( $_POST['default-header'] ) ) {
			check_admin_referer( 'custom-header-options', '_wpnonce-custom-header-options' );
			if ( 'random-default-image' == $_POST['default-header'] ) {
				set_theme_mod( 'header_image', 'random-default-image' );
			} elseif ( 'random-uploaded-image' == $_POST['default-header'] ) {
				set_theme_mod( 'header_image', 'random-uploaded-image' );
			} else {
				$this->process_default_headers();
				$uploaded = get_uploaded_header_images();
				if ( isset( $uploaded[$_POST['default-header']] ) ) {
					set_theme_mod( 'header_image', esc_url( $uploaded[$_POST['default-header']]['url'] ) );
					set_theme_mod( 'header_image_data', (object) $uploaded[$_POST['default-header']] );
				} elseif ( isset( $this->default_headers[$_POST['default-header']] ) ) {
					set_theme_mod( 'header_image', esc_url( $this->default_headers[$_POST['default-header']]['url'] ) );
					if ( empty( $this->default_headers[$_POST['default-header']]['width'] ) )
						$this->default_headers[$_POST['default-header']]['width'] = get_theme_support( 'custom-header', 'width' );
					if ( empty( $this->default_headers[$_POST['default-header']]['height'] ) )
						$this->default_headers[$_POST['default-header']]['height'] = get_theme_support( 'custom-header', 'height' );
					set_theme_mod( 'header_image_data', (object) $this->default_headers[$_POST['default-header']] );
				}
			}
		}
	}

	/**
	 * Process the default headers
	 *
	 * @since 3.0.0
	 */
	function process_default_headers() {
		global $_wp_default_headers;

		if ( !empty($this->headers) )
			return;

		if ( !isset($_wp_default_headers) )
			return;

		$this->default_headers = $_wp_default_headers;
		$template_directory_uri = get_template_directory_uri();
		$stylesheet_directory_uri = get_stylesheet_directory_uri();
		foreach ( array_keys($this->default_headers) as $header ) {
			$this->default_headers[$header]['url'] =  sprintf( $this->default_headers[$header]['url'], $template_directory_uri, $stylesheet_directory_uri );
			$this->default_headers[$header]['thumbnail_url'] =  sprintf( $this->default_headers[$header]['thumbnail_url'], $template_directory_uri, $stylesheet_directory_uri );
		}

	}

	/**
	 * Display UI for selecting one of several default headers.
	 *
	 * Show the random image option if this theme has multiple header images.
	 * Random image option is on by default if no header has been set.
	 *
	 * @since 3.0.0
	 */
	function show_header_selector( $type = 'default' ) {
		if ( 'default' == $type ) {
			$headers = $this->default_headers;
		} else {
			$headers = get_uploaded_header_images();
			$type = 'uploaded';
		}

		if ( 1 < count( $headers ) ) {
			echo '<div class="random-header">';
			echo '<label><input name="default-header" type="radio" value="random-' . $type . '-image"' . checked( is_random_header_image( $type ), true, false ) . ' />';
			echo __( '<strong>Random:</strong> Show a different image on each page.' );
			echo '</label>';
			echo '</div>';
		}

		echo '<div class="available-headers">';
		foreach ( $headers as $header_key => $header ) {
			$header_thumbnail = $header['thumbnail_url'];
			$header_url = $header['url'];
			$header_desc = empty( $header['description'] ) ? '' : $header['description'];
			echo '<div class="default-header">';
			echo '<label><input name="default-header" type="radio" value="' . esc_attr( $header_key ) . '" ' . checked( $header_url, get_theme_mod( 'header_image' ), false ) . ' />';
			$width = '';
			if ( !empty( $header['attachment_id'] ) )
				$width = ' width="230"';
			echo '<img src="' . $header_thumbnail . '" alt="' . esc_attr( $header_desc ) .'" title="' . esc_attr( $header_desc ) . '"' . $width . ' /></label>';
			echo '</div>';
		}
		echo '<div class="clear"></div></div>';
	}

	/**
	 * Execute Javascript depending on step.
	 *
	 * @since 2.1.0
	 */
	function js() {
		$step = $this->step();
		if ( ( 1 == $step || 3 == $step ) && current_theme_supports( 'custom-header', 'header-text' ) )
			$this->js_1();
		elseif ( 2 == $step )
			$this->js_2();
	}

	/**
	 * Display Javascript based on Step 1 and 3.
	 *
	 * @since 2.6.0
	 */
	function js_1() { ?>
<script type="text/javascript">
/* <![CDATA[ */
var farbtastic;
(function($){
	var default_color = '#<?php echo get_theme_support( 'custom-header', 'default-text-color' ); ?>',
		header_text_fields;

	function pickColor(color) {
		$('#name').css('color', color);
		$('#desc').css('color', color);
		$('#text-color').val(color);
		farbtastic.setColor(color);
	}

	function toggle_text() {
		var checked = $('#display-header-text').prop('checked'),
			text_color;
		header_text_fields.toggle( checked );
		if ( ! checked )
			return;
		text_color = $('#text-color');
		if ( '' == text_color.val().replace('#', '') ) {
			text_color.val( default_color );
			pickColor( default_color );
		} else {
			pickColor( text_color.val() );
		}
	}

	$(document).ready(function() {
		header_text_fields = $('.displaying-header-text');
		$('#pickcolor').click(function(e) {
			e.preventDefault();
			$('#color-picker').show();
		});

		$('#display-header-text').click( toggle_text );

		$('#defaultcolor').click(function() {
			pickColor(default_color);
			$('#text-color').val(default_color);
		});

		$('#text-color').keyup(function() {
			var _hex = $('#text-color').val();
			var hex = _hex;
			if ( hex[0] != '#' )
				hex = '#' + hex;
			hex = hex.replace(/[^#a-fA-F0-9]+/, '');
			if ( hex != _hex )
				$('#text-color').val(hex);
			if ( hex.length == 4 || hex.length == 7 )
				pickColor( hex );
		});

		$(document).mousedown(function(){
			$('#color-picker').each( function() {
				var display = $(this).css('display');
				if (display == 'block')
					$(this).fadeOut(2);
			});
		});

		farbtastic = $.farbtastic('#color-picker', function(color) { pickColor(color); });
		<?php if ( display_header_text() ) { ?>
		pickColor('#<?php echo get_header_textcolor(); ?>');
		<?php } else { ?>
		toggle_text();
		<?php } ?>
	});
})(jQuery);
/* ]]> */
</script>
<?php
	}

	/**
	 * Display Javascript based on Step 2.
	 *
	 * @since 2.6.0
	 */
	function js_2() { ?>
<script type="text/javascript">
/* <![CDATA[ */
	function onEndCrop( coords ) {
		jQuery( '#x1' ).val(coords.x);
		jQuery( '#y1' ).val(coords.y);
		jQuery( '#width' ).val(coords.w);
		jQuery( '#height' ).val(coords.h);
	}

	jQuery(document).ready(function() {
		var xinit = <?php echo absint( get_theme_support( 'custom-header', 'width' ) ); ?>;
		var yinit = <?php echo absint( get_theme_support( 'custom-header', 'height' ) ); ?>;
		var ratio = xinit / yinit;
		var ximg = jQuery('img#upload').width();
		var yimg = jQuery('img#upload').height();

		if ( yimg < yinit || ximg < xinit ) {
			if ( ximg / yimg > ratio ) {
				yinit = yimg;
				xinit = yinit * ratio;
			} else {
				xinit = ximg;
				yinit = xinit / ratio;
			}
		}

		jQuery('img#upload').imgAreaSelect({
			handles: true,
			keys: true,
			show: true,
			x1: 0,
			y1: 0,
			x2: xinit,
			y2: yinit,
			<?php
			if ( ! current_theme_supports( 'custom-header', 'flex-height' ) && ! current_theme_supports( 'custom-header', 'flex-width' ) ) {
			?>
			aspectRatio: xinit + ':' + yinit,
			<?php
			}
			if ( ! current_theme_supports( 'custom-header', 'flex-height' ) ) {
			?>
			maxHeight: <?php echo get_theme_support( 'custom-header', 'height' ); ?>,
			<?php
			}
			if ( ! current_theme_supports( 'custom-header', 'flex-width' ) ) {
			?>
			maxWidth: <?php echo get_theme_support( 'custom-header', 'width' ); ?>,
			<?php
			}
			?>
			onInit: function () {
				jQuery('#width').val(xinit);
				jQuery('#height').val(yinit);
			},
			onSelectChange: function(img, c) {
				jQuery('#x1').val(c.x1);
				jQuery('#y1').val(c.y1);
				jQuery('#width').val(c.width);
				jQuery('#height').val(c.height);
			}
		});
	});
/* ]]> */
</script>
<?php
	}

	/**
	 * Display first step of custom header image page.
	 *
	 * @since 2.1.0
	 */
	function step_1() {
		$this->process_default_headers();
?>

<div class="wrap">
<?php screen_icon(); ?>
<h2><?php _e('Custom Header'); ?></h2>

<?php if ( ! empty( $this->updated ) ) { ?>
<div id="message" class="updated">
<p><?php printf( __( 'Header updated. <a href="%s">Visit your site</a> to see how it looks.' ), home_url( '/' ) ); ?></p>
</div>
<?php } ?>

<h3><?php _e( 'Header Image' ); ?></h3>

<table class="form-table">
<tbody>

<tr valign="top">
<th scope="row"><?php _e( 'Preview' ); ?></th>
<td>
	<?php if ( $this->admin_image_div_callback ) {
	  call_user_func( $this->admin_image_div_callback );
	} else {
	?>
	<div id="headimg" style="background-image:url(<?php esc_url ( header_image() ) ?>);max-width:<?php echo get_custom_header()->width; ?>px;height:<?php echo get_custom_header()->height; ?>px;">
		<?php
		if ( display_header_text() )
			$style = ' style="color:#' . get_header_textcolor() . ';"';
		else
			$style = ' style="display:none;"';
		?>
		<h1><a id="name" class="displaying-header-text" <?php echo $style; ?> onclick="return false;" href="<?php bloginfo('url'); ?>"><?php bloginfo( 'name' ); ?></a></h1>
		<div id="desc" class="displaying-header-text" <?php echo $style; ?>><?php bloginfo( 'description' ); ?></div>
	</div>
	<?php } ?>
</td>
</tr>
<?php if ( current_theme_supports( 'custom-header', 'uploads' ) ) : ?>
<tr valign="top">
<th scope="row"><?php _e( 'Upload Image' ); ?></th>
<td>
	<p><?php _e( 'You can upload a custom header image to be shown at the top of your site instead of the default one. On the next screen you will be able to crop the image.' ); ?><br />
	<?php
	if ( ! current_theme_supports( 'custom-header', 'flex-height' ) && ! current_theme_supports( 'custom-header', 'flex-width' ) ) {
		printf( __( 'Images of exactly <strong>%1$d &times; %2$d pixels</strong> will be used as-is.' ) . '<br />', get_theme_support( 'custom-header', 'width' ), get_theme_support( 'custom-header', 'height' ) );
	} elseif ( current_theme_supports( 'custom-header', 'flex-height' ) ) {
		if ( ! current_theme_supports( 'custom-header', 'flex-width' ) )
			printf( __( 'Images should be at least <strong>%1$d pixels</strong> wide.' ) . ' ', get_theme_support( 'custom-header', 'width' ) );
	} elseif ( current_theme_supports( 'custom-header', 'flex-width' ) ) {
		if ( ! current_theme_supports( 'custom-header', 'flex-height' ) )
			printf( __( 'Images should be at least <strong>%1$d pixels</strong> tall.' ) . ' ', get_theme_support( 'custom-header', 'height' ) );
	}
	if ( current_theme_supports( 'custom-header', 'flex-height' ) || current_theme_supports( 'custom-header', 'flex-width' ) ) {
		if ( current_theme_supports( 'custom-header', 'width' ) )
			printf( __( 'Suggested width is <strong>%1$d pixels</strong>.' ) . ' ', get_theme_support( 'custom-header', 'width' ) );
		if ( current_theme_supports( 'custom-header', 'height' ) )
			printf( __( 'Suggested height is <strong>%1$d pixels</strong>.' ) . ' ', get_theme_support( 'custom-header', 'height' ) );
	}
	?></p>
	<form enctype="multipart/form-data" id="upload-form" method="post" action="<?php echo esc_attr( add_query_arg( 'step', 2 ) ) ?>">
	<p>
		<label for="upload"><?php _e( 'Choose an image from your computer:' ); ?></label><br />
		<input type="file" id="upload" name="import" />
		<input type="hidden" name="action" value="save" />
		<?php wp_nonce_field( 'custom-header-upload', '_wpnonce-custom-header-upload' ) ?>
		<?php submit_button( __( 'Upload' ), 'button', 'submit', false ); ?>
	</p>
	</form>
	<?php
		$image_library_url = get_upload_iframe_src( 'image', null, 'library' );
		$image_library_url = remove_query_arg( 'TB_iframe', $image_library_url );
		$image_library_url = add_query_arg( array( 'context' => 'custom-header', 'TB_iframe' => 1 ), $image_library_url );
	?>
	<span class="howto"><?php _ex( 'or', 'Custom Header: Choose an image from your computer - or - Choose from image library' ); ?></span> <a class="thickbox" href="<?php echo $image_library_url; ?>"><?php _e( 'Choose from image library' ); ?></a>
</td>
</tr>
<?php endif; ?>
</tbody>
</table>

<form method="post" action="<?php echo esc_attr( add_query_arg( 'step', 1 ) ) ?>">
<table class="form-table">
<tbody>
	<?php if ( get_uploaded_header_images() ) : ?>
<tr valign="top">
<th scope="row"><?php _e( 'Uploaded Images' ); ?></th>
<td>
	<p><?php _e( 'You can choose one of your previously uploaded headers, or show a random one.' ) ?></p>
	<?php
		$this->show_header_selector( 'uploaded' );
	?>
</td>
</tr>
	<?php endif;
	if ( ! empty( $this->default_headers ) ) : ?>
<tr valign="top">
<th scope="row"><?php _e( 'Default Images' ); ?></th>
<td>
<?php if ( current_theme_supports( 'custom-header', 'uploads' ) ) : ?>
	<p><?php _e( 'If you don&lsquo;t want to upload your own image, you can use one of these cool headers, or show a random one.' ) ?></p>
<?php else: ?>
	<p><?php _e( 'You can use one of these cool headers or show a random one on each page.' ) ?></p>
<?php endif; ?>
	<?php
		$this->show_header_selector( 'default' );
	?>
</td>
</tr>
	<?php endif;
	if ( get_header_image() ) : ?>
<tr valign="top">
<th scope="row"><?php _e( 'Remove Image' ); ?></th>
<td>
	<p><?php _e( 'This will remove the header image. You will not be able to restore any customizations.' ) ?></p>
	<?php submit_button( __( 'Remove Header Image' ), 'button', 'removeheader', false ); ?>
</td>
</tr>
	<?php endif;

	if ( current_theme_supports( 'custom-header', 'default-image' ) ) : ?>
<tr valign="top">
<th scope="row"><?php _e( 'Reset Image' ); ?></th>
<td>
	<p><?php _e( 'This will restore the original header image. You will not be able to restore any customizations.' ) ?></p>
	<?php submit_button( __( 'Restore Original Header Image' ), 'button', 'resetheader', false ); ?>
</td>
</tr>
	<?php endif; ?>
</tbody>
</table>

<?php if ( current_theme_supports( 'custom-header', 'header-text' ) ) : ?>

<h3><?php _e( 'Header Text' ); ?></h3>

<table class="form-table">
<tbody>
<tr valign="top">
<th scope="row"><?php _e( 'Header Text' ); ?></th>
<td>
	<p>
	<label><input type="checkbox" name="display-header-text" id="display-header-text"<?php checked( display_header_text() ); ?> /> <?php _e( 'Show header text with your image.' ); ?></label>
	</p>
</td>
</tr>

<tr valign="top" class="displaying-header-text">
<th scope="row"><?php _e( 'Text Color' ); ?></th>
<td>
	<p>
<?php if ( display_header_text() ) : ?>
		<input type="text" name="text-color" id="text-color" value="#<?php echo esc_attr( get_header_textcolor() ); ?>" />
<?php else : ?>
		<input type="text" name="text-color" id="text-color" value="#<?php echo esc_attr( get_theme_support( 'custom-header', 'default-text-color' ) ); ?>" />
<?php endif; ?>
		<a href="#" class="hide-if-no-js" id="pickcolor"><?php _e( 'Select a Color' ); ?></a>
	</p>
	<div id="color-picker" style="z-index: 100; background:#eee; border:1px solid #ccc; position:absolute; display:none;"></div>
</td>
</tr>

	<?php if ( current_theme_supports( 'custom-header', 'default-text-color' ) && get_theme_mod( 'header_textcolor' ) ) { ?>
<tr valign="top">
<th scope="row"><?php _e('Reset Text Color'); ?></th>
<td>
	<p><?php _e( 'This will restore the original header text. You will not be able to restore any customizations.' ) ?></p>
	<?php submit_button( __( 'Restore Original Header Text' ), 'button', 'resettext', false ); ?>
</td>
</tr>
	<?php } ?>

</tbody>
</table>
<?php endif;

do_action( 'custom_header_options' );

wp_nonce_field( 'custom-header-options', '_wpnonce-custom-header-options' ); ?>

<?php submit_button( null, 'primary', 'save-header-options' ); ?>
</form>
</div>

<?php }

	/**
	 * Display second step of custom header image page.
	 *
	 * @since 2.1.0
	 */
	function step_2() {
		check_admin_referer('custom-header-upload', '_wpnonce-custom-header-upload');
		if ( ! current_theme_supports( 'custom-header', 'uploads' ) )
			wp_die( __( 'Cheatin&#8217; uh?' ) );

		if ( empty( $_POST ) && isset( $_GET['file'] ) ) {
			$id = absint( $_GET['file'] );
			$file = get_attached_file( $id, true );
			$url = wp_get_attachment_image_src( $id, 'full');
			$url = $url[0];
		} elseif ( isset( $_POST ) ) {
			extract($this->step_2_manage_upload());
		}

		if ( file_exists( $file ) ) {
			list( $width, $height, $type, $attr ) = getimagesize( $file );
		} else {
			$data = wp_get_attachment_metadata( $id );
			$height = $data[ 'height' ];
			$width = $data[ 'width' ];
			unset( $data );
		}

		$max_width = 0;
		// For flex, limit size of image displayed to 1500px unless theme says otherwise
		if ( current_theme_supports( 'custom-header', 'flex-width' ) )
			$max_width = 1500;

		if ( current_theme_supports( 'custom-header', 'max-width' ) )
			$max_width = max( $max_width, get_theme_support( 'custom-header', 'max-width' ) );
		$max_width = max( $max_width, get_theme_support( 'custom-header', 'width' ) );

		// If flexible height isn't supported and the image is the exact right size
		if ( ! current_theme_supports( 'custom-header', 'flex-height' ) && ! current_theme_supports( 'custom-header', 'flex-width' )
			&& $width == get_theme_support( 'custom-header', 'width' ) && $height == get_theme_support( 'custom-header', 'height' ) )
		{
			// Add the meta-data
			if ( file_exists( $file ) )
				wp_update_attachment_metadata( $id, wp_generate_attachment_metadata( $id, $file ) );
			update_post_meta( $id, '_wp_attachment_is_custom_header', get_option('stylesheet' ) );

			set_theme_mod('header_image', esc_url($url));
			do_action('wp_create_file_in_uploads', $file, $id); // For replication
			return $this->finished();
		} elseif ( $width > $max_width ) {
			$oitar = $width / $max_width;
			$image = wp_crop_image($id, 0, 0, $width, $height, $max_width, $height / $oitar, false, str_replace(basename($file), 'midsize-'.basename($file), $file));
			if ( is_wp_error( $image ) )
				wp_die( __( 'Image could not be processed. Please go back and try again.' ), __( 'Image Processing Error' ) );

			$image = apply_filters('wp_create_file_in_uploads', $image, $id); // For replication

			$url = str_replace(basename($url), basename($image), $url);
			$width = $width / $oitar;
			$height = $height / $oitar;
		} else {
			$oitar = 1;
		}
		?>

<div class="wrap">
<?php screen_icon(); ?>
<h2><?php _e( 'Crop Header Image' ); ?></h2>

<form method="post" action="<?php echo esc_attr(add_query_arg('step', 3)); ?>">
	<p class="hide-if-no-js"><?php _e('Choose the part of the image you want to use as your header.'); ?></p>
	<p class="hide-if-js"><strong><?php _e( 'You need Javascript to choose a part of the image.'); ?></strong></p>

	<div id="crop_image" style="position: relative">
		<img src="<?php echo esc_url( $url ); ?>" id="upload" width="<?php echo $width; ?>" height="<?php echo $height; ?>" />
	</div>

	<input type="hidden" name="x1" id="x1" value="0"/>
	<input type="hidden" name="y1" id="y1" value="0"/>
	<input type="hidden" name="width" id="width" value="<?php echo esc_attr( $width ); ?>"/>
	<input type="hidden" name="height" id="height" value="<?php echo esc_attr( $height ); ?>"/>
	<input type="hidden" name="attachment_id" id="attachment_id" value="<?php echo esc_attr( $id ); ?>" />
	<input type="hidden" name="oitar" id="oitar" value="<?php echo esc_attr( $oitar ); ?>" />
	<?php if ( empty( $_POST ) && isset( $_GET['file'] ) ) { ?>
	<input type="hidden" name="new-attachment" value="true" />
	<?php } ?>
	<?php wp_nonce_field( 'custom-header-crop-image' ) ?>

	<?php submit_button( __( 'Crop and Publish' ) ); ?>
	</p>
</form>
</div>
		<?php
	}


	function step_2_manage_upload() {
		$overrides = array('test_form' => false);
		$file = wp_handle_upload($_FILES['import'], $overrides);

		if ( isset($file['error']) )
			wp_die( $file['error'],  __( 'Image Upload Error' ) );

		$url = $file['url'];
		$type = $file['type'];
		$file = $file['file'];
		$filename = basename($file);

		// Construct the object array
		$object = array(
			'post_title'     => $filename,
			'post_content'   => $url,
			'post_mime_type' => $type,
			'guid'           => $url,
			'context'        => 'custom-header'
		);

		// Save the data
		$id = wp_insert_attachment( $object, $file );
		return compact( 'id', 'file', 'filename', 'url', 'type' );
	}

	/**
	 * Display third step of custom header image page.
	 *
	 * @since 2.1.0
	 */
	function step_3() {
		check_admin_referer( 'custom-header-crop-image' );

		if ( ! current_theme_supports( 'custom-header', 'uploads' ) )
			wp_die( __( 'Cheatin&#8217; uh?' ) );

		if ( $_POST['oitar'] > 1 ) {
			$_POST['x1'] = $_POST['x1'] * $_POST['oitar'];
			$_POST['y1'] = $_POST['y1'] * $_POST['oitar'];
			$_POST['width'] = $_POST['width'] * $_POST['oitar'];
			$_POST['height'] = $_POST['height'] * $_POST['oitar'];
		}

		$attachment_id = absint( $_POST['attachment_id'] );
		$original = get_attached_file($attachment_id);


		$max_width = 0;
		// For flex, limit size of image displayed to 1500px unless theme says otherwise
		if ( current_theme_supports( 'custom-header', 'flex-width' ) )
			$max_width = 1500;

		if ( current_theme_supports( 'custom-header', 'max-width' ) )
			$max_width = max( $max_width, get_theme_support( 'custom-header', 'max-width' ) );
		$max_width = max( $max_width, get_theme_support( 'custom-header', 'width' ) );

		if ( ( current_theme_supports( 'custom-header', 'flex-height' ) && ! current_theme_supports( 'custom-header', 'flex-width' ) ) || $_POST['width'] > $max_width )
			$dst_height = absint( $_POST['height'] * ( $max_width / $_POST['width'] ) );
		elseif ( current_theme_supports( 'custom-header', 'flex-height' ) && current_theme_supports( 'custom-header', 'flex-width' ) )
			$dst_height = absint( $_POST['height'] );
		else
			$dst_height = get_theme_support( 'custom-header', 'height' );

		if ( ( current_theme_supports( 'custom-header', 'flex-width' ) && ! current_theme_supports( 'custom-header', 'flex-height' ) ) || $_POST['width'] > $max_width )
			$dst_width = absint( $_POST['width'] * ( $max_width / $_POST['width'] ) );
		elseif ( current_theme_supports( 'custom-header', 'flex-width' ) && current_theme_supports( 'custom-header', 'flex-height' ) )
			$dst_width = absint( $_POST['width'] );
		else
			$dst_width = get_theme_support( 'custom-header', 'width' );

		$cropped = wp_crop_image( $attachment_id, (int) $_POST['x1'], (int) $_POST['y1'], (int) $_POST['width'], (int) $_POST['height'], $dst_width, $dst_height );
		if ( is_wp_error( $cropped ) )
			wp_die( __( 'Image could not be processed. Please go back and try again.' ), __( 'Image Processing Error' ) );

		$cropped = apply_filters('wp_create_file_in_uploads', $cropped, $attachment_id); // For replication

		$parent = get_post($attachment_id);
		$parent_url = $parent->guid;
		$url = str_replace(basename($parent_url), basename($cropped), $parent_url);

		// Construct the object array
		$object = array(
			'ID' => $attachment_id,
			'post_title' => basename($cropped),
			'post_content' => $url,
			'post_mime_type' => 'image/jpeg',
			'guid' => $url,
			'context' => 'custom-header'
		);
		if ( isset( $_POST['new-attachment'] ) && $_POST['new-attachment'] )
			unset($object['ID']);

		// Update the attachment
		$attachment_id = wp_insert_attachment( $object, $cropped );
		wp_update_attachment_metadata( $attachment_id, wp_generate_attachment_metadata( $attachment_id, $cropped ) );
		update_post_meta( $attachment_id, '_wp_attachment_is_custom_header', get_option('stylesheet' ) );

		set_theme_mod('header_image', $url);

		$header_data                = new stdClass();
		$header_data->attachment_id = $attachment_id;
		$header_data->url           = $url;
		$header_data->thumbnail_url = $url;
		$header_data->width         = $dst_width;
		$header_data->height        = $dst_height;

		set_theme_mod( 'header_image_data', $header_data );

		// cleanup
		$medium = str_replace(basename($original), 'midsize-'.basename($original), $original);
		if ( file_exists( $medium ) )
			@unlink( apply_filters( 'wp_delete_file', $medium ) );
		if ( empty ( $_POST['new-attachment'] ) )
			@unlink( apply_filters( 'wp_delete_file', $original ) );

		return $this->finished();
	}

	/**
	 * Display last step of custom header image page.
	 *
	 * @since 2.1.0
	 */
	function finished() {
		$this->updated = true;
		$this->step_1();
	}

	/**
	 * Display the page based on the current step.
	 *
	 * @since 2.1.0
	 */
	function admin_page() {
		if ( ! current_user_can('edit_theme_options') )
			wp_die(__('You do not have permission to customize headers.'));
		$step = $this->step();
		if ( 2 == $step )
			$this->step_2();
		elseif ( 3 == $step )
			$this->step_3();
		else
			$this->step_1();
	}

	function attachment_fields_to_edit( $form_fields, $post ) {
		if ( isset( $_REQUEST['context'] ) && $_REQUEST['context'] == 'custom-header' ) {
			$form_fields = array();
			$href = esc_url(add_query_arg(array(
				'page' => 'custom-header',
				'step' => 2,
				'_wpnonce-custom-header-upload' => wp_create_nonce('custom-header-upload'),
				'file' => $post->ID
			), admin_url('themes.php')));

			$form_fields['buttons'] = array( 'tr' => '<tr class="submit"><td></td><td><a data-location="' . $href . '" class="wp-set-header">' . _( 'Set as header' ) . '</a></td></tr>' );
			$form_fields['context'] = array( 'input' => 'hidden', 'value' => 'custom-header' );
		}

		return $form_fields;
	}

	function filter_upload_tabs( $tabs ) {
		if ( isset( $_REQUEST['context'] ) && $_REQUEST['context'] == 'custom-header' )
			return array( 'library' => __('Media Library') );

		return $tabs;
	}

}