X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/f9001779751f83dc8a10e478bfecb4d8dd5f964c..e0feb3b2e5b436a06bbb04fbc838d1cd6ec95399:/wp-admin/custom-header.php

diff --git a/wp-admin/custom-header.php b/wp-admin/custom-header.php
index f1567f09..e61feb78 100644
--- a/wp-admin/custom-header.php
+++ b/wp-admin/custom-header.php
@@ -20,18 +20,16 @@ class Custom_Image_Header {
 	 *
 	 * @var callback
 	 * @since 2.1.0
-	 * @access private
 	 */
-	var $admin_header_callback;
+	public $admin_header_callback;
 
 	/**
 	 * Callback for header div.
 	 *
 	 * @var callback
 	 * @since 3.0.0
-	 * @access private
 	 */
-	var $admin_image_div_callback;
+	public $admin_image_div_callback;
 
 	/**
 	 * Holds default headers.
@@ -40,28 +38,30 @@ class Custom_Image_Header {
 	 * @since 3.0.0
 	 * @access private
 	 */
-	var $default_headers = array();
+	public $default_headers = array();
 
 	/**
-	 * Holds the page menu hook.
-	 *
-	 * @var string
-	 * @since 3.0.0
-	 * @access private
+	 * @var bool
 	 */
-	var $page = '';
+	private $updated;
 
 	/**
-	 * PHP4 Constructor - Register administration header callback.
+	 * Constructor - Register administration header callback.
 	 *
 	 * @since 2.1.0
 	 * @param callback $admin_header_callback
 	 * @param callback $admin_image_div_callback Optional custom image div output callback.
-	 * @return Custom_Image_Header
 	 */
-	function Custom_Image_Header($admin_header_callback, $admin_image_div_callback = '') {
+	public function __construct($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' ) );
+
+		add_action( 'customize_save_after',         array( $this, 'customize_set_last_used' ) );
+		add_action( 'wp_ajax_custom-header-crop',   array( $this, 'ajax_header_crop'        ) );
+		add_action( 'wp_ajax_custom-header-add',    array( $this, 'ajax_header_add'         ) );
+		add_action( 'wp_ajax_custom-header-remove', array( $this, 'ajax_header_remove'      ) );
 	}
 
 	/**
@@ -69,18 +69,20 @@ class Custom_Image_Header {
 	 *
 	 * @since 2.1.0
 	 */
-	function init() {
-		if ( ! current_user_can('edit_theme_options') )
+	public function init() {
+		$page = add_theme_page( __( 'Header' ), __( 'Header' ), 'edit_theme_options', 'custom-header', array( $this, 'admin_page' ) );
+		if ( ! $page ) {
 			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", $this->admin_header_callback, 51);
+		add_action( "admin_print_scripts-$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 );
+		if ( $this->admin_header_callback ) {
+			add_action( "admin_head-$page", $this->admin_header_callback, 51 );
+		}
 	}
 
 	/**
@@ -88,13 +90,39 @@ class Custom_Image_Header {
 	 *
 	 * @since 3.0.0
 	 */
-	function help() {
-		add_contextual_help( $this->page, '<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>' .
-		'<p><strong>' . __( 'For more information:' ) . '</strong></p>' .
-		'<p>' . __( '<a href="http://codex.wordpress.org/Appearance_Header_SubPanel" target="_blank">Documentation on Custom Header</a>' ) . '</p>' .
-		'<p>' . __( '<a href="http://wordpress.org/support/" target="_blank">Support Forums</a>' ) . '</p>' );
+	public function help() {
+		get_current_screen()->add_help_tab( array(
+			'id'      => 'overview',
+			'title'   => __('Overview'),
+			'content' =>
+				'<p>' . __( 'This screen is used to customize the header section of your theme.') . '</p>' .
+				'<p>' . __( 'You can choose from the theme&#8217;s default header images, or use one of your own. You can also customize how your Site Title and Tagline are displayed.') . '<p>'
+		) );
+
+		get_current_screen()->add_help_tab( array(
+			'id'      => 'set-header-image',
+			'title'   => __('Header Image'),
+			'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. Alternatively, you can use an image that has already been uploaded to your Media Library by clicking the &#8220;Choose Image&#8221; button.' ) . '</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 &#8220;Save Changes&#8221; button.' ) . '</p>' .
+				'<p>' . __( 'If your theme has more than one default header image, or you have uploaded more than one custom header image, you have the option of having WordPress display a randomly different image on each page of your site. Click the &#8220;Random&#8221; radio button next to the Uploaded Images or Default Images section to enable this feature.') . '</p>' .
+				'<p>' . __( 'If you don&#8217;t want a header image to be displayed on your site at all, click the &#8220;Remove Header Image&#8221; button at the bottom of the Header Image section of this page. If you want to re-enable the header image later, you just have to select one of the other image options and click &#8220;Save Changes&#8221;.') . '</p>'
+		) );
+
+		get_current_screen()->add_help_tab( array(
+			'id'      => 'set-header-text',
+			'title'   => __('Header Text'),
+			'content' =>
+				'<p>' . sprintf( __( 'For most themes, the header text is your Site Title and Tagline, as defined in the <a href="%1$s">General Settings</a> section.' ), admin_url( 'options-general.php' ) ) . '<p>' .
+				'<p>' . __( 'In the Header Text section of this page, you can choose whether to display this text or hide it. You can also choose a color for the text by clicking the Select Color button and either typing in a legitimate HTML hex value, e.g. &#8220;#ff0000&#8221; for red, or by choosing a color using the color picker.' ) . '</p>' .
+				'<p>' . __( 'Don&#8217;t forget to click &#8220;Save Changes&#8221; when you&#8217;re done!') . '</p>'
+		) );
+
+		get_current_screen()->set_help_sidebar(
+			'<p><strong>' . __( 'For more information:' ) . '</strong></p>' .
+			'<p>' . __( '<a href="https://codex.wordpress.org/Appearance_Header_Screen" target="_blank">Documentation on Custom Header</a>' ) . '</p>' .
+			'<p>' . __( '<a href="https://wordpress.org/support/" target="_blank">Support Forums</a>' ) . '</p>'
+		);
 	}
 
 	/**
@@ -104,13 +132,16 @@ class Custom_Image_Header {
 	 *
 	 * @return int Current step
 	 */
-	function step() {
+	public function step() {
 		if ( ! isset( $_GET['step'] ) )
 			return 1;
 
 		$step = (int) $_GET['step'];
-		if ( $step < 1 || 3 < $step )
-			$step = 1;
+		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;
 	}
@@ -120,47 +151,39 @@ class Custom_Image_Header {
 	 *
 	 * @since 2.1.0
 	 */
-	function js_includes() {
+	public function js_includes() {
 		$step = $this->step();
 
-		if ( ( 1 == $step || 3 == $step ) && $this->header_text() )
-			wp_enqueue_script('farbtastic');
-		elseif ( 2 == $step )
+		if ( ( 1 == $step || 3 == $step ) ) {
+			wp_enqueue_media();
+			wp_enqueue_script( 'custom-header' );
+			if ( current_theme_supports( 'custom-header', 'header-text' ) )
+				wp_enqueue_script( 'wp-color-picker' );
+		} elseif ( 2 == $step ) {
 			wp_enqueue_script('imgareaselect');
+		}
 	}
 
 	/**
 	 * Set up the enqueue for the CSS files
 	 *
-	 * @since 2.7
+	 * @since 2.7.0
 	 */
-	function css_includes() {
+	public function css_includes() {
 		$step = $this->step();
 
-		if ( ( 1 == $step || 3 == $step ) && $this->header_text() )
-			wp_enqueue_style('farbtastic');
+		if ( ( 1 == $step || 3 == $step ) && current_theme_supports( 'custom-header', 'header-text' ) )
+			wp_enqueue_style( 'wp-color-picker' );
 		elseif ( 2 == $step )
 			wp_enqueue_style('imgareaselect');
 	}
 
-	/**
-	 * Check if header text is allowed
-	 *
-	 * @since 3.0.0
-	 */
-	function header_text() {
-		if ( defined( 'NO_HEADER_TEXT' ) && NO_HEADER_TEXT )
-			return false;
-
-		return true;
-	}
-
 	/**
 	 * Execute custom header modification.
 	 *
 	 * @since 2.6.0
 	 */
-	function take_action() {
+	public function take_action() {
 		if ( ! current_user_can('edit_theme_options') )
 			return;
 
@@ -171,39 +194,33 @@ class Custom_Image_Header {
 
 		if ( isset( $_POST['resetheader'] ) ) {
 			check_admin_referer( 'custom-header-options', '_wpnonce-custom-header-options' );
-			remove_theme_mod( 'header_image' );
-			return;
-		}
-
-		if ( isset( $_POST['resettext'] ) ) {
-			check_admin_referer( 'custom-header-options', '_wpnonce-custom-header-options' );
-			remove_theme_mod('header_textcolor');
+			$this->reset_header_image();
 			return;
 		}
 
 		if ( isset( $_POST['removeheader'] ) ) {
 			check_admin_referer( 'custom-header-options', '_wpnonce-custom-header-options' );
-			set_theme_mod( 'header_image', '' );
+			$this->remove_header_image();
 			return;
 		}
 
-		if ( isset( $_POST['text-color'] ) ) {
+		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'] );
-			if ( 'blank' == $_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' );
-			} else {
-				$color = preg_replace('/[^0-9a-fA-F]/', '', $_POST['text-color']);
-				if ( strlen($color) == 6 || strlen($color) == 3 )
-					set_theme_mod('header_textcolor', $color);
-			}
 		}
 
-		if ( isset($_POST['default-header']) ) {
+		if ( isset( $_POST['default-header'] ) ) {
 			check_admin_referer( 'custom-header-options', '_wpnonce-custom-header-options' );
-			$this->process_default_headers();
-			if ( isset($this->default_headers[$_POST['default-header']]) )
-				set_theme_mod('header_image', esc_url($this->default_headers[$_POST['default-header']]['url']));
+			$this->set_header_image( $_POST['default-header'] );
+			return;
 		}
 	}
 
@@ -211,155 +228,150 @@ class Custom_Image_Header {
 	 * Process the default headers
 	 *
 	 * @since 3.0.0
+	 *
+	 * @global array $_wp_default_headers
 	 */
-	function process_default_headers() {
+	public function process_default_headers() {
 		global $_wp_default_headers;
 
-		if ( !empty($this->headers) )
+		if ( !isset($_wp_default_headers) )
 			return;
 
-		if ( !isset($_wp_default_headers) )
+		if ( ! empty( $this->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'], get_template_directory_uri(), get_stylesheet_directory_uri() );
-			$this->default_headers[$header]['thumbnail_url'] =  sprintf( $this->default_headers[$header]['thumbnail_url'], get_template_directory_uri(), get_stylesheet_directory_uri() );
+			$this->default_headers[$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_default_header_selector() {
-		echo '<div id="available-headers">';
-		foreach ( $this->default_headers as $header_key => $header ) {
+	public 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 ) . ' />';
+			_e( '<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 = $header['description'];
+			$header_desc = empty( $header['description'] ) ? '' : $header['description'];
+			$header_alt_text = empty( $header['alt_text'] ) ? $header_desc : $header['alt_text'];
 			echo '<div class="default-header">';
-			echo '<label><input name="default-header" type="radio" value="' . esc_attr($header_key) . '" ' . checked($header_url, get_theme_mod( 'header_image' ), false) . ' />';
-			echo '<img src="' . $header_thumbnail . '" alt="' . esc_attr($header_desc) .'" title="' . esc_attr($header_desc) .'" /></label>';
+			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="' . set_url_scheme( $header_thumbnail ) . '" alt="' . esc_attr( $header_alt_text ) .'" title="' . esc_attr( $header_desc ) . '"' . $width . ' /></label>';
 			echo '</div>';
 		}
 		echo '<div class="clear"></div></div>';
 	}
 
 	/**
-	 * Execute Javascript depending on step.
+	 * Execute JavaScript depending on step.
 	 *
 	 * @since 2.1.0
 	 */
-	function js() {
+	public function js() {
 		$step = $this->step();
-		if ( ( 1 == $step || 3 == $step ) && $this->header_text() )
+		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.
+	 * Display JavaScript based on Step 1 and 3.
 	 *
 	 * @since 2.6.0
 	 */
-	function js_1() { ?>
+	public function js_1() {
+		$default_color = '';
+		if ( current_theme_supports( 'custom-header', 'default-text-color' ) ) {
+			$default_color = get_theme_support( 'custom-header', 'default-text-color' );
+			if ( $default_color && false === strpos( $default_color, '#' ) ) {
+				$default_color = '#' . $default_color;
+			}
+		}
+		?>
 <script type="text/javascript">
-/* <![CDATA[ */
-	var text_objects = ['#name', '#desc', '#text-color-row'];
-	var farbtastic;
-	var default_color = '#<?php echo HEADER_TEXTCOLOR; ?>';
-	var old_color = null;
+(function($){
+	var default_color = '<?php echo $default_color; ?>',
+		header_text_fields;
 
 	function pickColor(color) {
-		jQuery('#name').css('color', color);
-		jQuery('#desc').css('color', color);
-		jQuery('#text-color').val(color);
-		farbtastic.setColor(color);
+		$('#name').css('color', color);
+		$('#desc').css('color', color);
+		$('#text-color').val(color);
 	}
 
-	function toggle_text(s) {
-		if (jQuery(s).attr('id') == 'showtext' && jQuery('#text-color').val() != 'blank')
-			return;
-
-		if (jQuery(s).attr('id') == 'hidetext' && jQuery('#text-color').val() == 'blank')
+	function toggle_text() {
+		var checked = $('#display-header-text').prop('checked'),
+			text_color;
+		header_text_fields.toggle( checked );
+		if ( ! checked )
 			return;
-
-		if (jQuery('#text-color').val() == 'blank') {
-			//Show text
-			if (old_color == '#blank')
-				old_color = default_color;
-
-			jQuery( text_objects.toString() ).show();
-			jQuery('#text-color').val(old_color);
-			jQuery('#name').css('color', old_color);
-			jQuery('#desc').css('color', old_color);
-			pickColor(old_color);
+		text_color = $('#text-color');
+		if ( '' == text_color.val().replace('#', '') ) {
+			text_color.val( default_color );
+			pickColor( default_color );
 		} else {
-			//Hide text
-			jQuery( text_objects.toString() ).hide();
-			old_color = jQuery('#text-color').val();
-			jQuery('#text-color').val('blank');
+			pickColor( text_color.val() );
 		}
 	}
 
-	jQuery(document).ready(function() {
-		jQuery('#pickcolor').click(function() {
-			jQuery('#color-picker').show();
-		});
-
-		jQuery('input[name="hidetext"]').click(function() {
-			toggle_text(this);
-		});
-
-		jQuery('#defaultcolor').click(function() {
-			pickColor(default_color);
-			jQuery('#text-color').val(default_color)
-		});
-
-		jQuery('#text-color').keyup(function() {
-			var _hex = jQuery('#text-color').val();
-			var hex = _hex;
-			if ( hex[0] != '#' )
-				hex = '#' + hex;
-			hex = hex.replace(/[^#a-fA-F0-9]+/, '');
-			if ( hex != _hex )
-				jQuery('#text-color').val(hex);
-			if ( hex.length == 4 || hex.length == 7 )
-				pickColor( hex );
-		});
-
-		jQuery(document).mousedown(function(){
-			jQuery('#color-picker').each( function() {
-				var display = jQuery(this).css('display');
-				if (display == 'block')
-					jQuery(this).fadeOut(2);
-			});
+	$(document).ready(function() {
+		var text_color = $('#text-color');
+		header_text_fields = $('.displaying-header-text');
+		text_color.wpColorPicker({
+			change: function( event, ui ) {
+				pickColor( text_color.wpColorPicker('color') );
+			},
+			clear: function() {
+				pickColor( '' );
+			}
 		});
-
-		farbtastic = jQuery.farbtastic('#color-picker', function(color) { pickColor(color); });
-		<?php if ( $color = get_theme_mod('header_textcolor', HEADER_TEXTCOLOR) ) { ?>
-		pickColor('#<?php echo $color; ?>');
-		<?php } ?>
-
-		<?php if ( 'blank' == get_theme_mod( 'header_textcolor', HEADER_TEXTCOLOR ) || '' == get_theme_mod('header_textcolor', HEADER_TEXTCOLOR) || ! $this->header_text() ) { ?>
+		$('#display-header-text').click( toggle_text );
+		<?php if ( ! display_header_text() ) : ?>
 		toggle_text();
-		<?php } ?>
-		});
+		<?php endif; ?>
+	});
+})(jQuery);
 </script>
 <?php
 	}
 
 	/**
-	 * Display Javascript based on Step 2.
+	 * Display JavaScript based on Step 2.
 	 *
 	 * @since 2.6.0
 	 */
-	function js_2() { ?>
+	public function js_2() { ?>
 <script type="text/javascript">
-/* <![CDATA[ */
 	function onEndCrop( coords ) {
 		jQuery( '#x1' ).val(coords.x);
 		jQuery( '#y1' ).val(coords.y);
@@ -368,8 +380,8 @@ class Custom_Image_Header {
 	}
 
 	jQuery(document).ready(function() {
-		var xinit = <?php echo HEADER_IMAGE_WIDTH; ?>;
-		var yinit = <?php echo HEADER_IMAGE_HEIGHT; ?>;
+		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();
@@ -387,14 +399,28 @@ class Custom_Image_Header {
 		jQuery('img#upload').imgAreaSelect({
 			handles: true,
 			keys: true,
-			aspectRatio: xinit + ':' + yinit,
 			show: true,
 			x1: 0,
 			y1: 0,
 			x2: xinit,
 			y2: yinit,
-			maxHeight: <?php echo HEADER_IMAGE_HEIGHT; ?>,
-			maxWidth: <?php echo HEADER_IMAGE_WIDTH; ?>,
+			<?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);
@@ -407,7 +433,6 @@ class Custom_Image_Header {
 			}
 		});
 	});
-/* ]]> */
 </script>
 <?php
 	}
@@ -417,13 +442,25 @@ class Custom_Image_Header {
 	 *
 	 * @since 2.1.0
 	 */
-	function step_1() {
+	public function step_1() {
 		$this->process_default_headers();
 ?>
 
 <div class="wrap">
-<?php screen_icon(); ?>
-<h2><?php _e('Custom Header'); ?></h2>
+<h1><?php _e( 'Custom Header' ); ?></h1>
+
+<?php if ( current_user_can( 'customize' ) ) { ?>
+<div class="notice notice-info hide-if-no-customize">
+	<p>
+		<?php
+		printf(
+			__( 'You can now manage and live-preview Custom Header in the <a href="%1$s">Customizer</a>.' ),
+			admin_url( 'customize.php?autofocus[control]=header_image' )
+		);
+		?>
+	</p>
+</div>
+<?php } ?>
 
 <?php if ( ! empty( $this->updated ) ) { ?>
 <div id="message" class="updated">
@@ -431,45 +468,92 @@ class Custom_Image_Header {
 </div>
 <?php } ?>
 
-<h3><?php _e( 'Header Image' ) ?></h3>
+<h3><?php _e( 'Header Image' ); ?></h3>
+
 <table class="form-table">
 <tbody>
 
-
-<tr valign="top">
+<?php if ( get_custom_header() || display_header_text() ) : ?>
+<tr>
 <th scope="row"><?php _e( 'Preview' ); ?></th>
-<td >
-	<?php if ( $this->admin_image_div_callback ) {
-	  call_user_func( $this->admin_image_div_callback );
+<td>
+	<?php
+	if ( $this->admin_image_div_callback ) {
+		call_user_func( $this->admin_image_div_callback );
 	} else {
+		$custom_header = get_custom_header();
+		$header_image = get_header_image();
+
+		if ( $header_image ) {
+			$header_image_style = 'background-image:url(' . esc_url( $header_image ) . ');';
+		}  else {
+			$header_image_style = '';
+		}
+
+		if ( $custom_header->width )
+			$header_image_style .= 'max-width:' . $custom_header->width . 'px;';
+		if ( $custom_header->height )
+			$header_image_style .= 'height:' . $custom_header->height . 'px;';
 	?>
-	<div id="headimg" style="max-width:<?php echo HEADER_IMAGE_WIDTH; ?>px;height:<?php echo HEADER_IMAGE_HEIGHT; ?>px;background-image:url(<?php esc_url ( header_image() ) ?>);">
+	<div id="headimg" style="<?php echo $header_image_style; ?>">
 		<?php
-		if ( 'blank' == get_theme_mod('header_textcolor', HEADER_TEXTCOLOR) || '' == get_theme_mod('header_textcolor', HEADER_TEXTCOLOR) || ! $this->header_text() )
-			$style = ' style="display:none;"';
+		if ( display_header_text() )
+			$style = ' style="color:#' . get_header_textcolor() . ';"';
 		else
-			$style = ' style="color:#' . get_theme_mod( 'header_textcolor', HEADER_TEXTCOLOR ) . ';"';
+			$style = ' style="display:none;"';
 		?>
-		<h1><a id="name"<?php echo $style; ?> onclick="return false;" href="<?php bloginfo('url'); ?>"><?php bloginfo( 'name' ); ?></a></h1>
-		<div id="desc"<?php echo $style; ?>><?php bloginfo( 'description' ); ?></div>
+		<h1><a id="name" class="displaying-header-text" <?php echo $style; ?> onclick="return false;" href="<?php bloginfo('url'); ?>" tabindex="-1"><?php bloginfo( 'name' ); ?></a></h1>
+		<div id="desc" class="displaying-header-text" <?php echo $style; ?>><?php bloginfo( 'description' ); ?></div>
 	</div>
 	<?php } ?>
 </td>
 </tr>
-<?php if ( current_theme_supports( 'custom-header-uploads' ) ) : ?>
-<tr valign="top">
-<th scope="row"><?php _e( 'Upload Image' ); ?></th>
+<?php endif; ?>
+
+<?php if ( current_user_can( 'upload_files' ) && current_theme_supports( 'custom-header', 'uploads' ) ) : ?>
+<tr>
+<th scope="row"><?php _e( 'Select Image' ); ?></th>
 <td>
-	<p><?php _e( 'You can upload a custom header image to be shown at the top of your site instead of the default one. On the next screen you will be able to crop the image.' ); ?><br />
-	<?php printf( __( 'Images of exactly <strong>%1$d &times; %2$d pixels</strong> will be used as-is.' ), HEADER_IMAGE_WIDTH, HEADER_IMAGE_HEIGHT ); ?></p>
-	<form enctype="multipart/form-data" id="upload-form" method="post" action="<?php echo esc_attr( add_query_arg( 'step', 2 ) ) ?>">
+	<p><?php _e( 'You can select an image to be shown at the top of your site by uploading from your computer or choosing from your media library. After selecting an image you will be able to crop it.' ); ?><br />
+	<?php
+	if ( ! current_theme_supports( 'custom-header', 'flex-height' ) && ! current_theme_supports( 'custom-header', 'flex-width' ) ) {
+		printf( __( 'Images of exactly <strong>%1$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" class="wp-upload-form" method="post" action="<?php echo esc_url( 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 wp_nonce_field( 'custom-header-upload', '_wpnonce-custom-header-upload' ); ?>
 		<?php submit_button( __( 'Upload' ), 'button', 'submit', false ); ?>
 	</p>
+	<?php
+		$modal_update_href = esc_url( add_query_arg( array(
+			'page' => 'custom-header',
+			'step' => 2,
+			'_wpnonce-custom-header-upload' => wp_create_nonce('custom-header-upload'),
+		), admin_url('themes.php') ) );
+	?>
+	<p>
+		<label for="choose-from-library-link"><?php _e( 'Or choose an image from your media library:' ); ?></label><br />
+		<button id="choose-from-library-link" class="button"
+			data-update-link="<?php echo esc_attr( $modal_update_href ); ?>"
+			data-choose="<?php esc_attr_e( 'Choose a Custom Header' ); ?>"
+			data-update="<?php esc_attr_e( 'Set as header' ); ?>"><?php _e( 'Choose Image' ); ?></button>
+	</p>
 	</form>
 </td>
 </tr>
@@ -477,27 +561,38 @@ class Custom_Image_Header {
 </tbody>
 </table>
 
-<form method="post" action="<?php echo esc_attr( add_query_arg( 'step', 1 ) ) ?>">
+<form method="post" action="<?php echo esc_url( add_query_arg( 'step', 1 ) ) ?>">
+<?php submit_button( null, 'screen-reader-text', 'save-header-options', false ); ?>
 <table class="form-table">
 <tbody>
-	<?php if ( ! empty( $this->default_headers ) ) : ?>
-<tr valign="top">
+	<?php if ( get_uploaded_header_images() ) : ?>
+<tr>
+<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>
 <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.' ) ?></p>
+<?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.' ) ?>
+	<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_default_header_selector();
+		$this->show_header_selector( 'default' );
 	?>
 </td>
 </tr>
 	<?php endif;
-
 	if ( get_header_image() ) : ?>
-<tr valign="top">
+<tr>
 <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>
@@ -506,8 +601,9 @@ class Custom_Image_Header {
 </tr>
 	<?php endif;
 
-	if ( defined( 'HEADER_IMAGE' ) ) : ?>
-<tr valign="top">
+	$default_image = get_theme_support( 'custom-header', 'default-image' );
+	if ( $default_image && get_header_image() != $default_image ) : ?>
+<tr>
 <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>
@@ -518,47 +614,58 @@ class Custom_Image_Header {
 </tbody>
 </table>
 
-	<?php if ( $this->header_text() ) : ?>
-<h3><?php _e( 'Header Text' ) ?></h3>
+<?php if ( current_theme_supports( 'custom-header', 'header-text' ) ) : ?>
+
+<h3><?php _e( 'Header Text' ); ?></h3>
+
 <table class="form-table">
 <tbody>
-<tr valign="top" class="hide-if-no-js">
-<th scope="row"><?php _e( 'Display Text' ); ?></th>
+<tr>
+<th scope="row"><?php _e( 'Header Text' ); ?></th>
 <td>
 	<p>
-	<?php $hidetext = get_theme_mod( 'header_textcolor', HEADER_TEXTCOLOR ); ?>
-	<label><input type="radio" value="1" name="hidetext" id="hidetext"<?php checked( ( 'blank' == $hidetext || empty( $hidetext ) )  ? true : false ); ?> /> <?php _e( 'No' ); ?></label>
-	<label><input type="radio" value="0" name="hidetext" id="showtext"<?php checked( ( 'blank' == $hidetext || empty( $hidetext ) ) ? false : true ); ?> /> <?php _e( 'Yes' ); ?></label>
+	<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" id="text-color-row">
+<tr class="displaying-header-text">
 <th scope="row"><?php _e( 'Text Color' ); ?></th>
 <td>
 	<p>
-		<input type="text" name="text-color" id="text-color" value="#<?php echo esc_attr( get_theme_mod( 'header_textcolor', HEADER_TEXTCOLOR ) ); ?>" />
-		<span class="description hide-if-js"><?php _e( 'If you want to hide header text, add <strong>#blank</strong> as text color.' );?></span>
-		<input type="button" class="button hide-if-no-js" value="<?php esc_attr_e( 'Select a Color' ); ?>" id="pickcolor" />
-	</p>
-	<div id="color-picker" style="z-index: 100; background:#eee; border:1px solid #ccc; position:absolute; display:none;"></div>
-</td>
-</tr>
+	<?php
+	$default_color = '';
+	if ( current_theme_supports( 'custom-header', 'default-text-color' ) ) {
+		$default_color = get_theme_support( 'custom-header', 'default-text-color' );
+		if ( $default_color && false === strpos( $default_color, '#' ) ) {
+			$default_color = '#' . $default_color;
+		}
+	}
 
-	<?php if ( defined('HEADER_TEXTCOLOR') && 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 ); ?>
+	$default_color_attr = $default_color ? ' data-default-color="' . esc_attr( $default_color ) . '"' : '';
+
+	$header_textcolor = display_header_text() ? get_header_textcolor() : get_theme_support( 'custom-header', 'default-text-color' );
+	if ( $header_textcolor && false === strpos( $header_textcolor, '#' ) ) {
+		$header_textcolor = '#' . $header_textcolor;
+	}
+
+	echo '<input type="text" name="text-color" id="text-color" value="' . esc_attr( $header_textcolor ) . '"' . $default_color_attr . ' />';
+	if ( $default_color ) {
+		echo ' <span class="description hide-if-js">' . sprintf( _x( 'Default: %s', 'color' ), esc_html( $default_color ) ) . '</span>';
+	}
+	?>
+	</p>
 </td>
 </tr>
-	<?php } ?>
-
 </tbody>
 </table>
-	<?php endif;
+<?php endif;
 
+/**
+ * Fires just before the submit button in the custom header options form.
+ *
+ * @since 3.1.0
+ */
 do_action( 'custom_header_options' );
 
 wp_nonce_field( 'custom-header-options', '_wpnonce-custom-header-options' ); ?>
@@ -574,48 +681,70 @@ wp_nonce_field( 'custom-header-options', '_wpnonce-custom-header-options' ); ?>
 	 *
 	 * @since 2.1.0
 	 */
-	function step_2() {
+	public 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?' );
-
-		$overrides = array('test_form' => false);
-		$file = wp_handle_upload($_FILES['import'], $overrides);
+		if ( ! current_theme_supports( 'custom-header', 'uploads' ) )
+			wp_die( __( 'Cheatin&#8217; uh?' ), 403 );
+
+		if ( empty( $_POST ) && isset( $_GET['file'] ) ) {
+			$attachment_id = absint( $_GET['file'] );
+			$file = get_attached_file( $attachment_id, true );
+			$url = wp_get_attachment_image_src( $attachment_id, 'full' );
+			$url = $url[0];
+		} elseif ( isset( $_POST ) ) {
+			$data = $this->step_2_manage_upload();
+			$attachment_id = $data['attachment_id'];
+			$file = $data['file'];
+			$url = $data['url'];
+		}
 
-		if ( isset($file['error']) )
-			wp_die( $file['error'],  __( 'Image Upload Error' ) );
+		if ( file_exists( $file ) ) {
+			list( $width, $height, $type, $attr ) = getimagesize( $file );
+		} else {
+			$data = wp_get_attachment_metadata( $attachment_id );
+			$height = isset( $data[ 'height' ] ) ? $data[ 'height' ] : 0;
+			$width = isset( $data[ 'width' ] ) ? $data[ 'width' ] : 0;
+			unset( $data );
+		}
 
-		$url = $file['url'];
-		$type = $file['type'];
-		$file = $file['file'];
-		$filename = basename($file);
+		$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;
 
-		// Construct the object array
-		$object = array(
-		'post_title' => $filename,
-		'post_content' => $url,
-		'post_mime_type' => $type,
-		'guid' => $url);
+		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' ) );
 
-		// Save the data
-		$id = wp_insert_attachment($object, $file);
+		// 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( $attachment_id, wp_generate_attachment_metadata( $attachment_id, $file ) );
 
-		list($width, $height, $type, $attr) = getimagesize( $file );
+			$this->set_header_image( compact( 'url', 'attachment_id', 'width', 'height' ) );
 
-		if ( $width == HEADER_IMAGE_WIDTH && $height == HEADER_IMAGE_HEIGHT ) {
-			// Add the meta-data
-			wp_update_attachment_metadata( $id, wp_generate_attachment_metadata( $id, $file ) );
+			/**
+			 * Fires after the header image is set or an error is returned.
+			 *
+			 * @since 2.1.0
+			 *
+			 * @param string $file          Path to the file.
+			 * @param int    $attachment_id Attachment ID.
+			 */
+			do_action( 'wp_create_file_in_uploads', $file, $attachment_id ); // For replication
 
-			set_theme_mod('header_image', esc_url($url));
-			do_action('wp_create_file_in_uploads', $file, $id); // For replication
 			return $this->finished();
-		} elseif ( $width > HEADER_IMAGE_WIDTH ) {
-			$oitar = $width / HEADER_IMAGE_WIDTH;
-			$image = wp_crop_image($file, 0, 0, $width, $height, HEADER_IMAGE_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' ) );
+		} elseif ( $width > $max_width ) {
+			$oitar = $width / $max_width;
+			$image = wp_crop_image($attachment_id, 0, 0, $width, $height, $max_width, $height / $oitar, false, str_replace(basename($file), 'midsize-'.basename($file), $file));
+			if ( ! $image || 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
+			/** This filter is documented in wp-admin/custom-header.php */
+			$image = apply_filters( 'wp_create_file_in_uploads', $image, $attachment_id ); // For replication
 
 			$url = str_replace(basename($url), basename($image), $url);
 			$width = $width / $oitar;
@@ -626,12 +755,11 @@ wp_nonce_field( 'custom-header-options', '_wpnonce-custom-header-options' ); ?>
 		?>
 
 <div class="wrap">
-<?php screen_icon(); ?>
-<h2><?php _e( 'Crop Header Image' ); ?></h2>
+<h1><?php _e( 'Crop Header Image' ); ?></h1>
 
-<form method="post" action="<?php echo esc_attr(add_query_arg('step', 3)); ?>">
+<form method="post" action="<?php echo esc_url(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>
+	<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; ?>" />
@@ -641,26 +769,76 @@ wp_nonce_field( 'custom-header-options', '_wpnonce-custom-header-options' ); ?>
 	<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="attachment_id" id="attachment_id" value="<?php echo esc_attr( $attachment_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="create-new-attachment" value="true" />
+	<?php } ?>
 	<?php wp_nonce_field( 'custom-header-crop-image' ) ?>
 
-	<?php submit_button( __( 'Crop and Publish' ) ); ?>
+	<p class="submit">
+	<?php submit_button( __( 'Crop and Publish' ), 'primary', 'submit', false ); ?>
+	<?php
+	if ( isset( $oitar ) && 1 == $oitar && ( current_theme_supports( 'custom-header', 'flex-height' ) || current_theme_supports( 'custom-header', 'flex-width' ) ) )
+		submit_button( __( 'Skip Cropping, Publish Image as Is' ), 'secondary', 'skip-cropping', false );
+	?>
 	</p>
 </form>
 </div>
 		<?php
 	}
 
+
+	/**
+	 * Upload the file to be cropped in the second step.
+	 *
+	 * @since 3.4.0
+	 */
+	public function step_2_manage_upload() {
+		$overrides = array('test_form' => false);
+
+		$uploaded_file = $_FILES['import'];
+		$wp_filetype = wp_check_filetype_and_ext( $uploaded_file['tmp_name'], $uploaded_file['name'] );
+		if ( ! wp_match_mime_types( 'image', $wp_filetype['type'] ) )
+			wp_die( __( 'The uploaded file is not a valid image. Please try again.' ) );
+
+		$file = wp_handle_upload($uploaded_file, $overrides);
+
+		if ( isset($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
+		$attachment_id = wp_insert_attachment( $object, $file );
+		return compact( 'attachment_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?' );
+	public function step_3() {
+		check_admin_referer( 'custom-header-crop-image' );
+
+		if ( ! current_theme_supports( 'custom-header', 'uploads' ) )
+			wp_die( __( 'Cheatin&#8217; uh?' ), 403 );
+
+		if ( ! empty( $_POST['skip-cropping'] ) && ! ( current_theme_supports( 'custom-header', 'flex-height' ) || current_theme_supports( 'custom-header', 'flex-width' ) ) )
+			wp_die( __( 'Cheatin&#8217; uh?' ), 403 );
 
 		if ( $_POST['oitar'] > 1 ) {
 			$_POST['x1'] = $_POST['x1'] * $_POST['oitar'];
@@ -669,37 +847,49 @@ wp_nonce_field( 'custom-header-options', '_wpnonce-custom-header-options' ); ?>
 			$_POST['height'] = $_POST['height'] * $_POST['oitar'];
 		}
 
-		$original = get_attached_file( $_POST['attachment_id'] );
+		$attachment_id = absint( $_POST['attachment_id'] );
+		$original = get_attached_file($attachment_id);
 
-		$cropped = wp_crop_image($_POST['attachment_id'], $_POST['x1'], $_POST['y1'], $_POST['width'], $_POST['height'], HEADER_IMAGE_WIDTH, HEADER_IMAGE_HEIGHT);
-		if ( is_wp_error( $cropped ) )
-			wp_die( __( 'Image could not be processed.  Please go back and try again.' ), __( 'Image Processing Error' ) );
+		$dimensions = $this->get_header_dimensions( array(
+			'height' => $_POST['height'],
+			'width'  => $_POST['width'],
+		) );
+		$height = $dimensions['dst_height'];
+		$width = $dimensions['dst_width'];
 
-		$cropped = apply_filters('wp_create_file_in_uploads', $cropped, $_POST['attachment_id']); // For replication
+		if ( empty( $_POST['skip-cropping'] ) )
+			$cropped = wp_crop_image( $attachment_id, (int) $_POST['x1'], (int) $_POST['y1'], (int) $_POST['width'], (int) $_POST['height'], $width, $height );
+		elseif ( ! empty( $_POST['create-new-attachment'] ) )
+			$cropped = _copy_image_file( $attachment_id );
+		else
+			$cropped = get_attached_file( $attachment_id );
 
-		$parent = get_post($_POST['attachment_id']);
-		$parent_url = $parent->guid;
-		$url = str_replace(basename($parent_url), basename($cropped), $parent_url);
+		if ( ! $cropped || is_wp_error( $cropped ) )
+			wp_die( __( 'Image could not be processed. Please go back and try again.' ), __( 'Image Processing Error' ) );
 
-		// Construct the object array
-		$object = array(
-			'ID' => $_POST['attachment_id'],
-			'post_title' => basename($cropped),
-			'post_content' => $url,
-			'post_mime_type' => 'image/jpeg',
-			'guid' => $url
-		);
+		/** This filter is documented in wp-admin/custom-header.php */
+		$cropped = apply_filters( 'wp_create_file_in_uploads', $cropped, $attachment_id ); // For replication
+
+		$object = $this->create_attachment_object( $cropped, $attachment_id );
+
+		if ( ! empty( $_POST['create-new-attachment'] ) )
+			unset( $object['ID'] );
 
 		// Update the attachment
-		wp_insert_attachment($object, $cropped);
-		wp_update_attachment_metadata( $_POST['attachment_id'], wp_generate_attachment_metadata( $_POST['attachment_id'], $cropped ) );
+		$attachment_id = $this->insert_attachment( $object, $cropped );
 
-		set_theme_mod('header_image', $url);
+		$url = $object['guid'];
+		$this->set_header_image( compact( 'url', 'attachment_id', 'width', 'height' ) );
 
-		// cleanup
-		$medium = str_replace(basename($original), 'midsize-'.basename($original), $original);
-		@unlink( apply_filters( 'wp_delete_file', $medium ) );
-		@unlink( apply_filters( 'wp_delete_file', $original ) );
+		// Cleanup.
+		$medium = str_replace( basename( $original ), 'midsize-' . basename( $original ), $original );
+		if ( file_exists( $medium ) ) {
+			wp_delete_file( $medium );
+		}
+
+		if ( empty( $_POST['create-new-attachment'] ) && empty( $_POST['skip-cropping'] ) ) {
+			wp_delete_file( $original );
+		}
 
 		return $this->finished();
 	}
@@ -709,7 +899,7 @@ wp_nonce_field( 'custom-header-options', '_wpnonce-custom-header-options' ); ?>
 	 *
 	 * @since 2.1.0
 	 */
-	function finished() {
+	public function finished() {
 		$this->updated = true;
 		$this->step_1();
 	}
@@ -719,17 +909,418 @@ wp_nonce_field( 'custom-header-options', '_wpnonce-custom-header-options' ); ?>
 	 *
 	 * @since 2.1.0
 	 */
-	function admin_page() {
+	public function admin_page() {
 		if ( ! current_user_can('edit_theme_options') )
 			wp_die(__('You do not have permission to customize headers.'));
 		$step = $this->step();
-		if ( 1 == $step )
-			$this->step_1();
-		elseif ( 2 == $step )
+		if ( 2 == $step )
 			$this->step_2();
 		elseif ( 3 == $step )
 			$this->step_3();
+		else
+			$this->step_1();
+	}
+
+	/**
+	 * Unused since 3.5.0.
+	 *
+	 * @since 3.4.0
+	 *
+	 * @param array $form_fields
+	 * @return array $form_fields
+	 */
+	public function attachment_fields_to_edit( $form_fields ) {
+		return $form_fields;
+	}
+
+	/**
+	 * Unused since 3.5.0.
+	 *
+	 * @since 3.4.0
+	 *
+	 * @param array $tabs
+	 * @return array $tabs
+	 */
+	public function filter_upload_tabs( $tabs ) {
+		return $tabs;
 	}
 
+	/**
+	 * Choose a header image, selected from existing uploaded and default headers,
+	 * or provide an array of uploaded header data (either new, or from media library).
+	 *
+	 * @param mixed $choice Which header image to select. Allows for values of 'random-default-image',
+	 * 	for randomly cycling among the default images; 'random-uploaded-image', for randomly cycling
+	 * 	among the uploaded images; the key of a default image registered for that theme; and
+	 * 	the key of an image uploaded for that theme (the basename of the URL).
+	 *  Or an array of arguments: attachment_id, url, width, height. All are required.
+	 *
+	 * @since 3.4.0
+	 *
+	 * @param array|object|string $choice
+	 */
+	final public function set_header_image( $choice ) {
+		if ( is_array( $choice ) || is_object( $choice ) ) {
+			$choice = (array) $choice;
+			if ( ! isset( $choice['attachment_id'] ) || ! isset( $choice['url'] ) )
+				return;
+
+			$choice['url'] = esc_url_raw( $choice['url'] );
+
+			$header_image_data = (object) array(
+				'attachment_id' => $choice['attachment_id'],
+				'url'           => $choice['url'],
+				'thumbnail_url' => $choice['url'],
+				'height'        => $choice['height'],
+				'width'         => $choice['width'],
+			);
+
+			update_post_meta( $choice['attachment_id'], '_wp_attachment_is_custom_header', get_stylesheet() );
+			set_theme_mod( 'header_image', $choice['url'] );
+			set_theme_mod( 'header_image_data', $header_image_data );
+			return;
+		}
+
+		if ( in_array( $choice, array( 'remove-header', 'random-default-image', 'random-uploaded-image' ) ) ) {
+			set_theme_mod( 'header_image', $choice );
+			remove_theme_mod( 'header_image_data' );
+			return;
+		}
+
+		$uploaded = get_uploaded_header_images();
+		if ( $uploaded && isset( $uploaded[ $choice ] ) ) {
+			$header_image_data = $uploaded[ $choice ];
+
+		} else {
+			$this->process_default_headers();
+			if ( isset( $this->default_headers[ $choice ] ) )
+				$header_image_data = $this->default_headers[ $choice ];
+			else
+				return;
+		}
+
+		set_theme_mod( 'header_image', esc_url_raw( $header_image_data['url'] ) );
+		set_theme_mod( 'header_image_data', $header_image_data );
+	}
+
+	/**
+	 * Remove a header image.
+	 *
+	 * @since 3.4.0
+	 */
+	final public function remove_header_image() {
+		$this->set_header_image( 'remove-header' );
+	}
+
+	/**
+	 * Reset a header image to the default image for the theme.
+	 *
+	 * This method does not do anything if the theme does not have a default header image.
+	 *
+	 * @since 3.4.0
+	 */
+	final public function reset_header_image() {
+		$this->process_default_headers();
+		$default = get_theme_support( 'custom-header', 'default-image' );
+
+		if ( ! $default ) {
+			$this->remove_header_image();
+			return;
+		}
+		$default = sprintf( $default, get_template_directory_uri(), get_stylesheet_directory_uri() );
+
+		$default_data = array();
+		foreach ( $this->default_headers as $header => $details ) {
+			if ( $details['url'] == $default ) {
+				$default_data = $details;
+				break;
+			}
+		}
+
+		set_theme_mod( 'header_image', $default );
+		set_theme_mod( 'header_image_data', (object) $default_data );
+	}
+
+	/**
+	 * Calculate width and height based on what the currently selected theme supports.
+	 *
+	 * @param array $dimensions
+	 * @return array dst_height and dst_width of header image.
+	 */
+	final public function get_header_dimensions( $dimensions ) {
+		$max_width = 0;
+		$width = absint( $dimensions['width'] );
+		$height = absint( $dimensions['height'] );
+		$theme_height = get_theme_support( 'custom-header', 'height' );
+		$theme_width = get_theme_support( 'custom-header', 'width' );
+		$has_flex_width = current_theme_supports( 'custom-header', 'flex-width' );
+		$has_flex_height = current_theme_supports( 'custom-header', 'flex-height' );
+		$has_max_width = current_theme_supports( 'custom-header', 'max-width' ) ;
+		$dst = array( 'dst_height' => null, 'dst_width' => null );
+
+		// For flex, limit size of image displayed to 1500px unless theme says otherwise
+		if ( $has_flex_width ) {
+			$max_width = 1500;
+		}
+
+		if ( $has_max_width ) {
+			$max_width = max( $max_width, get_theme_support( 'custom-header', 'max-width' ) );
+		}
+		$max_width = max( $max_width, $theme_width );
+
+		if ( $has_flex_height && ( ! $has_flex_width || $width > $max_width ) ) {
+			$dst['dst_height'] = absint( $height * ( $max_width / $width ) );
+		}
+		elseif ( $has_flex_height && $has_flex_width ) {
+			$dst['dst_height'] = $height;
+		}
+		else {
+			$dst['dst_height'] = $theme_height;
+		}
+
+		if ( $has_flex_width && ( ! $has_flex_height || $width > $max_width ) ) {
+			$dst['dst_width'] = absint( $width * ( $max_width / $width ) );
+		}
+		elseif ( $has_flex_width && $has_flex_height ) {
+			$dst['dst_width'] = $width;
+		}
+		else {
+			$dst['dst_width'] = $theme_width;
+		}
+
+		return $dst;
+	}
+
+	/**
+	 * Create an attachment 'object'.
+	 *
+	 * @param string $cropped              Cropped image URL.
+	 * @param int    $parent_attachment_id Attachment ID of parent image.
+	 *
+	 * @return array Attachment object.
+	 */
+	final public function create_attachment_object( $cropped, $parent_attachment_id ) {
+		$parent = get_post( $parent_attachment_id );
+		$parent_url = $parent->guid;
+		$url = str_replace( basename( $parent_url ), basename( $cropped ), $parent_url );
+
+		$size = @getimagesize( $cropped );
+		$image_type = ( $size ) ? $size['mime'] : 'image/jpeg';
+
+		$object = array(
+			'ID' => $parent_attachment_id,
+			'post_title' => basename($cropped),
+			'post_content' => $url,
+			'post_mime_type' => $image_type,
+			'guid' => $url,
+			'context' => 'custom-header'
+		);
+
+		return $object;
+	}
+
+	/**
+	 * Insert an attachment and its metadata.
+	 *
+	 * @param array  $object  Attachment object.
+	 * @param string $cropped Cropped image URL.
+	 *
+	 * @return int Attachment ID.
+	 */
+	final public function insert_attachment( $object, $cropped ) {
+		$attachment_id = wp_insert_attachment( $object, $cropped );
+		$metadata = wp_generate_attachment_metadata( $attachment_id, $cropped );
+		/**
+		 * Filter the header image attachment metadata.
+		 *
+		 * @since 3.9.0
+		 *
+		 * @see wp_generate_attachment_metadata()
+		 *
+		 * @param array $metadata Attachment metadata.
+		 */
+		$metadata = apply_filters( 'wp_header_image_attachment_metadata', $metadata );
+		wp_update_attachment_metadata( $attachment_id, $metadata );
+		return $attachment_id;
+	}
+
+	/**
+	 * Gets attachment uploaded by Media Manager, crops it, then saves it as a
+	 * new object. Returns JSON-encoded object details.
+	 */
+	public function ajax_header_crop() {
+		check_ajax_referer( 'image_editor-' . $_POST['id'], 'nonce' );
+
+		if ( ! current_user_can( 'edit_theme_options' ) ) {
+			wp_send_json_error();
+		}
+
+		if ( ! current_theme_supports( 'custom-header', 'uploads' ) ) {
+			wp_send_json_error();
+		}
+
+		$crop_details = $_POST['cropDetails'];
+
+		$dimensions = $this->get_header_dimensions( array(
+			'height' => $crop_details['height'],
+			'width'  => $crop_details['width'],
+		) );
+
+		$attachment_id = absint( $_POST['id'] );
+
+		$cropped = wp_crop_image(
+			$attachment_id,
+			(int) $crop_details['x1'],
+			(int) $crop_details['y1'],
+			(int) $crop_details['width'],
+			(int) $crop_details['height'],
+			(int) $dimensions['dst_width'],
+			(int) $dimensions['dst_height']
+		);
+
+		if ( ! $cropped || is_wp_error( $cropped ) ) {
+			wp_send_json_error( array( 'message' => __( 'Image could not be processed. Please go back and try again.' ) ) );
+		}
+
+		/** This filter is documented in wp-admin/custom-header.php */
+		$cropped = apply_filters( 'wp_create_file_in_uploads', $cropped, $attachment_id ); // For replication
+
+		$object = $this->create_attachment_object( $cropped, $attachment_id );
+
+		unset( $object['ID'] );
+
+		$new_attachment_id = $this->insert_attachment( $object, $cropped );
+
+		$object['attachment_id'] = $new_attachment_id;
+		$object['width']         = $dimensions['dst_width'];
+		$object['height']        = $dimensions['dst_height'];
+
+		wp_send_json_success( $object );
+	}
+
+	/**
+	 * Given an attachment ID for a header image, updates its "last used"
+	 * timestamp to now.
+	 *
+	 * Triggered when the user tries adds a new header image from the
+	 * Media Manager, even if s/he doesn't save that change.
+	 */
+	public function ajax_header_add() {
+		check_ajax_referer( 'header-add', 'nonce' );
+
+		if ( ! current_user_can( 'edit_theme_options' ) ) {
+			wp_send_json_error();
+		}
+
+		$attachment_id = absint( $_POST['attachment_id'] );
+		if ( $attachment_id < 1 ) {
+			wp_send_json_error();
+		}
+
+		$key = '_wp_attachment_custom_header_last_used_' . get_stylesheet();
+		update_post_meta( $attachment_id, $key, time() );
+		update_post_meta( $attachment_id, '_wp_attachment_is_custom_header', get_stylesheet() );
+
+		wp_send_json_success();
+	}
+
+	/**
+	 * Given an attachment ID for a header image, unsets it as a user-uploaded
+	 * header image for the current theme.
+	 *
+	 * Triggered when the user clicks the overlay "X" button next to each image
+	 * choice in the Customizer's Header tool.
+	 */
+	public function ajax_header_remove() {
+		check_ajax_referer( 'header-remove', 'nonce' );
+
+		if ( ! current_user_can( 'edit_theme_options' ) ) {
+			wp_send_json_error();
+		}
+
+		$attachment_id = absint( $_POST['attachment_id'] );
+		if ( $attachment_id < 1 ) {
+			wp_send_json_error();
+		}
+
+		$key = '_wp_attachment_custom_header_last_used_' . get_stylesheet();
+		delete_post_meta( $attachment_id, $key );
+		delete_post_meta( $attachment_id, '_wp_attachment_is_custom_header', get_stylesheet() );
+
+		wp_send_json_success();
+	}
+
+	/**
+	 *
+	 * @param WP_Customize_Manager $wp_customize
+	 */
+	public function customize_set_last_used( $wp_customize ) {
+		$data = $wp_customize->get_setting( 'header_image_data' )->post_value();
+
+		if ( ! isset( $data['attachment_id'] ) ) {
+			return;
+		}
+
+		$attachment_id = $data['attachment_id'];
+		$key = '_wp_attachment_custom_header_last_used_' . get_stylesheet();
+		update_post_meta( $attachment_id, $key, time() );
+	}
+
+	/**
+	 *
+	 * @return array
+	 */
+	public function get_default_header_images() {
+		$this->process_default_headers();
+
+		// Get the default image if there is one.
+		$default = get_theme_support( 'custom-header', 'default-image' );
+
+		if ( ! $default ) { // If not,
+			return $this->default_headers; // easy peasy.
+		}
+
+		$default = sprintf( $default, get_template_directory_uri(), get_stylesheet_directory_uri() );
+		$already_has_default = false;
+
+		foreach ( $this->default_headers as $k => $h ) {
+			if ( $h['url'] === $default ) {
+				$already_has_default = true;
+				break;
+			}
+		}
+
+		if ( $already_has_default ) {
+			return $this->default_headers;
+		}
+
+		// If the one true image isn't included in the default set, prepend it.
+		$header_images = array();
+		$header_images['default'] = array(
+			'url'           => $default,
+			'thumbnail_url' => $default,
+			'description'   => 'Default'
+		);
+
+		// The rest of the set comes after.
+		return array_merge( $header_images, $this->default_headers );
+	}
+
+	/**
+	 *
+	 * @return array
+	 */
+	public function get_uploaded_header_images() {
+		$header_images = get_uploaded_header_images();
+		$timestamp_key = '_wp_attachment_custom_header_last_used_' . get_stylesheet();
+		$alt_text_key = '_wp_attachment_image_alt';
+
+		foreach ( $header_images as &$header_image ) {
+			$header_meta = get_post_meta( $header_image['attachment_id'] );
+			$header_image['timestamp'] = isset( $header_meta[ $timestamp_key ] ) ? $header_meta[ $timestamp_key ] : '';
+			$header_image['alt_text'] = isset( $header_meta[ $alt_text_key ] ) ? $header_meta[ $alt_text_key ] : '';
+		}
+
+		return $header_images;
+	}
 }
-?>