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< ? php
/**
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* The custom background script .
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*
* @ package WordPress
* @ subpackage Administration
*/
/**
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* The custom background class .
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*
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* @ since 3.0 . 0
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* @ package WordPress
* @ subpackage Administration
*/
class Custom_Background {
/**
* Callback for administration header .
*
* @ var callback
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* @ since 3.0 . 0
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* @ access private
*/
var $admin_header_callback ;
/**
* Callback for header div .
*
* @ var callback
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* @ since 3.0 . 0
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* @ access private
*/
var $admin_image_div_callback ;
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/**
* Holds the page menu hook .
*
* @ var string
* @ since 3.0 . 0
* @ access private
*/
var $page = '' ;
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/**
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* Constructor - Register administration header callback .
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*
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* @ since 3.0 . 0
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* @ param callback $admin_header_callback
* @ param callback $admin_image_div_callback Optional custom image div output callback .
* @ return Custom_Background
*/
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function __construct ( $admin_header_callback = '' , $admin_image_div_callback = '' ) {
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$this -> admin_header_callback = $admin_header_callback ;
$this -> admin_image_div_callback = $admin_image_div_callback ;
Introduce new registration methods for custom headers and custom backgrounds. Backwards compatible, but old methods will be deprecated. see #20249. see #17242.
Custom header: Use add_theme_support('custom-header', $args) instead of add_custom_image_header(). Deprecates all use of constants.
* HEADER_TEXTCOLOR is now (string) 'default-text-color'.
* NO_HEADER_TEXT is nowi ! (bool) 'header-text'.
* HEADER_IMAGE_WIDTH (and _HEIGHT) are now (int) 'width' and 'height'.
* HEADER_IMAGE is now (string) 'default-image'.
* The 3.4 arguments 'suggested-width' and 'suggested-height' are now just 'width' and 'height' (they are "suggested" when flex-width and flex-height are set).
* Callback arguments for add_custom_image_header() can now be passed to add_theme_support().
Custom background: Use add_theme_support('custom-background, $args) instead of add_custom_background(). Deprecates all use of constants.
* BACKGROUND_COLOR is now (string) 'default-color'.
* BACKGROUND_IMAGE is now (string) 'default-image'.
* Callback arguments for add_custom_background() can now be passed to add_theme_support().
Inheritance: add_theme_support() arguments for custom headers and custom backgrounds is a first-one-wins situation. This is not an unusual paradigm for theming as a child theme (which is included first) overrides a parent theme.
* Once an argument is explicitly set, it cannot be overridden. You must hook in earlier and set it first.
* Any argument that is not explicitly set before WP is loaded will inherit the default value for that argument.
* It is therefore possible for a child theme to pass minimal arguments as long as the parent theme specifies others that may be necessary.
* Allows for a child theme to alter callbacks for <head> and preview (previously, calling add_custom_image_header more than once broke things).
* The just-in-time bits ensure that arguments fall back to default values, that the values of all constants are considered (such as one defined after an old add_custom_image_header call), and that all constants are defined (so as to be backwards compatible).
get_theme_support(): Introduce new second argument, which headers and backgrounds leverage to return an argument. current_theme_supports() already supported checking the truthiness of the argument.
* For example, get_theme_support( 'custom-header', 'width' ) will return the width specified during registration.
* If you had wanted the default image, use get_theme_support( 'custom-header', 'default-image' ) instead of HEADER_IMAGE.
Deprecate remove_custom_image_header(), remove_custom_background(). Use remove_theme_support('custom-header'), 'custom-background'.
Deprecate short-lived custom-header-uploads internal support; this is now (bool) 'uploads' for add_theme_support().
New 3.4 functions renamed or removed: Rename get_current_header_data() to get_custom_header(). Remove get_header_image_width() and _height() in favor of get_custom_header()->width and height.
git-svn-id: http://svn.automattic.com/wordpress/trunk@20212 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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add_action ( 'admin_menu' , array ( $this , 'init' ) );
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add_action ( 'wp_ajax_set-background-image' , array ( $this , 'wp_set_background_image' ) );
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}
/**
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* Set up the hooks for the Custom Background admin page .
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*
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* @ since 3.0 . 0
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*/
function init () {
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if ( ! current_user_can ( 'edit_theme_options' ) )
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return ;
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$this -> page = $page = add_theme_page ( __ ( 'Background' ), __ ( 'Background' ), 'edit_theme_options' , 'custom-background' , array ( & $this , 'admin_page' ));
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add_action ( " load- $page " , array ( & $this , 'admin_load' ));
add_action ( " load- $page " , array ( & $this , 'take_action' ), 49 );
add_action ( " load- $page " , array ( & $this , 'handle_upload' ), 49 );
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add_filter ( 'attachment_fields_to_edit' , array ( $this , 'attachment_fields_to_edit' ), 10 , 2 );
add_filter ( 'media_upload_tabs' , array ( $this , 'filter_upload_tabs' ) );
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if ( $this -> admin_header_callback )
add_action ( " admin_head- $page " , $this -> admin_header_callback , 51 );
}
/**
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* Set up the enqueue for the CSS & JavaScript files .
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*
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* @ since 3.0 . 0
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*/
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function admin_load () {
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get_current_screen () -> add_help_tab ( array (
'id' => 'overview' ,
'title' => __ ( 'Overview' ),
'content' =>
'<p>' . __ ( 'You can customize the look of your site without touching any of your theme’s code by using a custom background. Your background can be an image or a color.' ) . '</p>' .
'<p>' . __ ( 'To use a background image, simply upload it, then choose your display options below. You can display a single instance of your image, or tile it to fill the screen. You can have your background fixed in place, so your site content moves on top of it, or you can have it scroll with your site.' ) . '</p>' .
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'<p>' . __ ( 'You can also choose a background color. If you know the hexadecimal code for the color you want, enter it in the Background Color field. If not, click on the Select a Color link, and a color picker will allow you to choose the exact shade you want.' ) . '</p>' .
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'<p>' . __ ( 'Don’t forget to click on the Save Changes button when you are finished.' ) . '</p>'
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) );
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get_current_screen () -> set_help_sidebar (
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'<p><strong>' . __ ( 'For more information:' ) . '</strong></p>' .
'<p>' . __ ( '<a href="http://codex.wordpress.org/Appearance_Background_Screen" target="_blank">Documentation on Custom Background</a>' ) . '</p>' .
'<p>' . __ ( '<a href="http://wordpress.org/support/" target="_blank">Support Forums</a>' ) . '</p>'
);
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add_thickbox ();
wp_enqueue_script ( 'media-upload' );
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wp_enqueue_script ( 'custom-background' );
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wp_enqueue_style ( 'farbtastic' );
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}
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/**
* Execute custom background modification .
*
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* @ since 3.0 . 0
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*/
function take_action () {
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if ( empty ( $_POST ) )
return ;
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if ( isset ( $_POST [ 'reset-background' ]) ) {
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check_admin_referer ( 'custom-background-reset' , '_wpnonce-custom-background-reset' );
remove_theme_mod ( 'background_image' );
remove_theme_mod ( 'background_image_thumb' );
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$this -> updated = true ;
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return ;
}
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if ( isset ( $_POST [ 'remove-background' ]) ) {
// @TODO: Uploaded files are not removed here.
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check_admin_referer ( 'custom-background-remove' , '_wpnonce-custom-background-remove' );
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set_theme_mod ( 'background_image' , '' );
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set_theme_mod ( 'background_image_thumb' , '' );
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$this -> updated = true ;
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wp_safe_redirect ( $_POST [ '_wp_http_referer' ] );
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return ;
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}
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if ( isset ( $_POST [ 'background-repeat' ]) ) {
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check_admin_referer ( 'custom-background' );
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if ( in_array ( $_POST [ 'background-repeat' ], array ( 'repeat' , 'no-repeat' , 'repeat-x' , 'repeat-y' )) )
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$repeat = $_POST [ 'background-repeat' ];
else
$repeat = 'repeat' ;
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set_theme_mod ( 'background_repeat' , $repeat );
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}
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if ( isset ( $_POST [ 'background-position-x' ]) ) {
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check_admin_referer ( 'custom-background' );
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if ( in_array ( $_POST [ 'background-position-x' ], array ( 'center' , 'right' , 'left' )) )
$position = $_POST [ 'background-position-x' ];
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else
$position = 'left' ;
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set_theme_mod ( 'background_position_x' , $position );
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}
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if ( isset ( $_POST [ 'background-attachment' ]) ) {
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check_admin_referer ( 'custom-background' );
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if ( in_array ( $_POST [ 'background-attachment' ], array ( 'fixed' , 'scroll' )) )
$attachment = $_POST [ 'background-attachment' ];
else
$attachment = 'fixed' ;
set_theme_mod ( 'background_attachment' , $attachment );
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}
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if ( isset ( $_POST [ 'background-color' ]) ) {
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check_admin_referer ( 'custom-background' );
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$color = preg_replace ( '/[^0-9a-fA-F]/' , '' , $_POST [ 'background-color' ]);
if ( strlen ( $color ) == 6 || strlen ( $color ) == 3 )
set_theme_mod ( 'background_color' , $color );
else
set_theme_mod ( 'background_color' , '' );
}
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$this -> updated = true ;
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}
/**
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* Display the custom background page .
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*
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* @ since 3.0 . 0
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*/
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function admin_page () {
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?>
< div class = " wrap " id = " custom-background " >
< ? php screen_icon (); ?>
< h2 >< ? php _e ( 'Custom Background' ); ?> </h2>
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< ? php if ( ! empty ( $this -> updated ) ) { ?>
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< div id = " message " class = " updated " >
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< p >< ? php printf ( __ ( 'Background updated. <a href="%s">Visit your site</a> to see how it looks.' ), home_url ( '/' ) ); ?> </p>
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</ div >
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< ? php }
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if ( $this -> admin_image_div_callback ) {
call_user_func ( $this -> admin_image_div_callback );
} else {
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?>
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< h3 >< ? php _e ( 'Background Image' ); ?> </h3>
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< table class = " form-table " >
< tbody >
< tr valign = " top " >
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< th scope = " row " >< ? php _e ( 'Preview' ); ?> </th>
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< td >
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< ? php
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$background_styles = '' ;
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if ( $bgcolor = get_background_color () )
$background_styles .= 'background-color: #' . $bgcolor . ';' ;
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if ( get_background_image () ) {
// background-image URL must be single quote, see below
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$background_styles .= ' background-image: url(\'' . set_url_scheme ( get_theme_mod ( 'background_image_thumb' , '' ) ) . '\');'
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. ' background-repeat: ' . get_theme_mod ( 'background_repeat' , 'repeat' ) . ';'
. ' background-position: top ' . get_theme_mod ( 'background_position_x' , 'left' );
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}
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?>
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< div id = " custom-background-image " style = " <?php echo $background_styles ; ?> " >< ? php // must be double quote, see above ?>
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< ? php if ( get_background_image () ) { ?>
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< img class = " custom-background-image " src = " <?php echo set_url_scheme( get_theme_mod('background_image_thumb', '') ); ?> " style = " visibility:hidden; " alt = " " />< br />
< img class = " custom-background-image " src = " <?php echo set_url_scheme( get_theme_mod('background_image_thumb', '') ); ?> " style = " visibility:hidden; " alt = " " />
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< ? php } ?>
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</ div >
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< ? php } ?>
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</ td >
</ tr >
< ? php if ( get_background_image () ) : ?>
< tr valign = " top " >
< th scope = " row " >< ? php _e ( 'Remove Image' ); ?> </th>
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< td >
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< form method = " post " action = " " >
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< ? php wp_nonce_field ( 'custom-background-remove' , '_wpnonce-custom-background-remove' ); ?>
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< ? php submit_button ( __ ( 'Remove Background Image' ), 'button' , 'remove-background' , false ); ?> <br/>
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< ? php _e ( 'This will remove the background image. You will not be able to restore any customizations.' ) ?>
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</ form >
</ td >
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</ tr >
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< ? php endif ; ?>
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Introduce new registration methods for custom headers and custom backgrounds. Backwards compatible, but old methods will be deprecated. see #20249. see #17242.
Custom header: Use add_theme_support('custom-header', $args) instead of add_custom_image_header(). Deprecates all use of constants.
* HEADER_TEXTCOLOR is now (string) 'default-text-color'.
* NO_HEADER_TEXT is nowi ! (bool) 'header-text'.
* HEADER_IMAGE_WIDTH (and _HEIGHT) are now (int) 'width' and 'height'.
* HEADER_IMAGE is now (string) 'default-image'.
* The 3.4 arguments 'suggested-width' and 'suggested-height' are now just 'width' and 'height' (they are "suggested" when flex-width and flex-height are set).
* Callback arguments for add_custom_image_header() can now be passed to add_theme_support().
Custom background: Use add_theme_support('custom-background, $args) instead of add_custom_background(). Deprecates all use of constants.
* BACKGROUND_COLOR is now (string) 'default-color'.
* BACKGROUND_IMAGE is now (string) 'default-image'.
* Callback arguments for add_custom_background() can now be passed to add_theme_support().
Inheritance: add_theme_support() arguments for custom headers and custom backgrounds is a first-one-wins situation. This is not an unusual paradigm for theming as a child theme (which is included first) overrides a parent theme.
* Once an argument is explicitly set, it cannot be overridden. You must hook in earlier and set it first.
* Any argument that is not explicitly set before WP is loaded will inherit the default value for that argument.
* It is therefore possible for a child theme to pass minimal arguments as long as the parent theme specifies others that may be necessary.
* Allows for a child theme to alter callbacks for <head> and preview (previously, calling add_custom_image_header more than once broke things).
* The just-in-time bits ensure that arguments fall back to default values, that the values of all constants are considered (such as one defined after an old add_custom_image_header call), and that all constants are defined (so as to be backwards compatible).
get_theme_support(): Introduce new second argument, which headers and backgrounds leverage to return an argument. current_theme_supports() already supported checking the truthiness of the argument.
* For example, get_theme_support( 'custom-header', 'width' ) will return the width specified during registration.
* If you had wanted the default image, use get_theme_support( 'custom-header', 'default-image' ) instead of HEADER_IMAGE.
Deprecate remove_custom_image_header(), remove_custom_background(). Use remove_theme_support('custom-header'), 'custom-background'.
Deprecate short-lived custom-header-uploads internal support; this is now (bool) 'uploads' for add_theme_support().
New 3.4 functions renamed or removed: Rename get_current_header_data() to get_custom_header(). Remove get_header_image_width() and _height() in favor of get_custom_header()->width and height.
git-svn-id: http://svn.automattic.com/wordpress/trunk@20212 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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< ? php if ( get_theme_support ( 'custom-background' , 'default-image' ) ) : ?>
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< tr valign = " top " >
< th scope = " row " >< ? php _e ( 'Restore Original Image' ); ?> </th>
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< td >
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< form method = " post " action = " " >
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< ? php wp_nonce_field ( 'custom-background-reset' , '_wpnonce-custom-background-reset' ); ?>
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< ? php submit_button ( __ ( 'Restore Original Image' ), 'button' , 'reset-background' , false ); ?> <br/>
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< ? php _e ( 'This will restore the original background image. You will not be able to restore any customizations.' ) ?>
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</ form >
</ td >
</ tr >
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< ? php endif ; ?>
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< tr valign = " top " >
< th scope = " row " >< ? php _e ( 'Upload Image' ); ?> </th>
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< td >< form enctype = " multipart/form-data " id = " upload-form " method = " post " action = " " >
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< 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-background-upload' , '_wpnonce-custom-background-upload' ); ?>
< ? php submit_button ( __ ( 'Upload' ), 'button' , 'submit' , false ); ?>
</ p >
< ? 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-background' , 'TB_iframe' => 1 ), $image_library_url );
?>
< p >
< label for = " choose-from-library-link " >< ? php _e ( 'Or choose an image from your media library:' ); ?> </label><br />
< a id = " choose-from-library-link " class = " button thickbox " href = " <?php echo esc_url( $image_library_url ); ?> " >< ? php _e ( 'Choose Image' ); ?> </a>
</ p >
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</ form >
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</ td >
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</ tr >
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</ tbody >
</ table >
< h3 >< ? php _e ( 'Display Options' ) ?> </h3>
< form method = " post " action = " " >
< table class = " form-table " >
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< tbody >
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< ? php if ( get_background_image () ) : ?>
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< tr valign = " top " >
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< th scope = " row " >< ? php _e ( 'Position' ); ?> </th>
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< td >< fieldset >< legend class = " screen-reader-text " >< span >< ? php _e ( 'Background Position' ); ?> </span></legend>
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< label >
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< input name = " background-position-x " type = " radio " value = " left " < ? php checked ( 'left' , get_theme_mod ( 'background_position_x' , 'left' )); ?> />
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< ? php _e ( 'Left' ) ?>
</ label >
< label >
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< input name = " background-position-x " type = " radio " value = " center " < ? php checked ( 'center' , get_theme_mod ( 'background_position_x' , 'left' )); ?> />
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< ? php _e ( 'Center' ) ?>
</ label >
< label >
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< input name = " background-position-x " type = " radio " value = " right " < ? php checked ( 'right' , get_theme_mod ( 'background_position_x' , 'left' )); ?> />
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< ? php _e ( 'Right' ) ?>
</ label >
</ fieldset ></ td >
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</ tr >
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< tr valign = " top " >
< th scope = " row " >< ? php _e ( 'Repeat' ); ?> </th>
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< td >< fieldset >< legend class = " screen-reader-text " >< span >< ? php _e ( 'Background Repeat' ); ?> </span></legend>
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< label >< input type = " radio " name = " background-repeat " value = " no-repeat " < ? php checked ( 'no-repeat' , get_theme_mod ( 'background_repeat' , 'repeat' )); ?> /> <?php _e('No Repeat'); ?></label>
< label >< input type = " radio " name = " background-repeat " value = " repeat " < ? php checked ( 'repeat' , get_theme_mod ( 'background_repeat' , 'repeat' )); ?> /> <?php _e('Tile'); ?></label>
< label >< input type = " radio " name = " background-repeat " value = " repeat-x " < ? php checked ( 'repeat-x' , get_theme_mod ( 'background_repeat' , 'repeat' )); ?> /> <?php _e('Tile Horizontally'); ?></label>
< label >< input type = " radio " name = " background-repeat " value = " repeat-y " < ? php checked ( 'repeat-y' , get_theme_mod ( 'background_repeat' , 'repeat' )); ?> /> <?php _e('Tile Vertically'); ?></label>
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</ fieldset ></ td >
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</ tr >
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< tr valign = " top " >
< th scope = " row " >< ? php _e ( 'Attachment' ); ?> </th>
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< td >< fieldset >< legend class = " screen-reader-text " >< span >< ? php _e ( 'Background Attachment' ); ?> </span></legend>
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< label >
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< input name = " background-attachment " type = " radio " value = " scroll " < ? php checked ( 'scroll' , get_theme_mod ( 'background_attachment' , 'scroll' )); ?> />
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< ? php _e ( 'Scroll' ) ?>
</ label >
< label >
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< input name = " background-attachment " type = " radio " value = " fixed " < ? php checked ( 'fixed' , get_theme_mod ( 'background_attachment' , 'scroll' )); ?> />
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< ? php _e ( 'Fixed' ) ?>
</ label >
</ fieldset ></ td >
</ tr >
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< ? php endif ; // get_background_image() ?>
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< tr valign = " top " >
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< th scope = " row " >< ? php _e ( 'Background Color' ); ?> </th>
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< td >< fieldset >< legend class = " screen-reader-text " >< span >< ? php _e ( 'Background Color' ); ?> </span></legend>
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< ? php $show_clear = get_background_color () ? '' : ' style="display:none"' ; ?>
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< input type = " text " name = " background-color " id = " background-color " value = " #<?php echo esc_attr(get_background_color()) ?> " />
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< a class = " hide-if-no-js " href = " # " id = " pickcolor " >< ? php _e ( 'Select a Color' ); ?> </a> <span<?php echo $show_clear; ?> class="hide-if-no-js" id="clearcolor"> (<a href="#"><?php _e( 'Clear' ); ?></a>)</span>
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< div id = " colorPickerDiv " style = " z-index: 100; background:#eee; border:1px solid #ccc; position:absolute; display:none; " ></ div >
</ fieldset ></ td >
</ tr >
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</ tbody >
</ table >
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< ? php wp_nonce_field ( 'custom-background' ); ?>
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< ? php submit_button ( null , 'primary' , 'save-background-options' ); ?>
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</ form >
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</ div >
< ? php
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}
/**
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* Handle an Image upload for the background image .
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*
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* @ since 3.0 . 0
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*/
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function handle_upload () {
if ( empty ( $_FILES ) )
return ;
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check_admin_referer ( 'custom-background-upload' , '_wpnonce-custom-background-upload' );
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$overrides = array ( 'test_form' => false );
$file = wp_handle_upload ( $_FILES [ 'import' ], $overrides );
if ( isset ( $file [ 'error' ]) )
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wp_die ( $file [ 'error' ] );
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$url = $file [ 'url' ];
$type = $file [ 'type' ];
$file = $file [ 'file' ];
$filename = basename ( $file );
// Construct the object array
$object = array (
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'post_title' => $filename ,
'post_content' => $url ,
'post_mime_type' => $type ,
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'guid' => $url ,
'context' => 'custom-background'
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);
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// Save the data
$id = wp_insert_attachment ( $object , $file );
// Add the meta-data
wp_update_attachment_metadata ( $id , wp_generate_attachment_metadata ( $id , $file ) );
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update_post_meta ( $id , '_wp_attachment_is_custom_background' , get_option ( 'stylesheet' ) );
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set_theme_mod ( 'background_image' , esc_url ( $url ));
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$thumbnail = wp_get_attachment_image_src ( $id , 'thumbnail' );
set_theme_mod ( 'background_image_thumb' , esc_url ( $thumbnail [ 0 ] ) );
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do_action ( 'wp_create_file_in_uploads' , $file , $id ); // For replication
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$this -> updated = true ;
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}
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function attachment_fields_to_edit ( $form_fields , $post ) {
if ( isset ( $_REQUEST [ 'context' ] ) && $_REQUEST [ 'context' ] == 'custom-background' ) {
$form_fields = array ( 'image-size' => $form_fields [ 'image-size' ] );
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$form_fields [ 'buttons' ] = array ( 'tr' => '<tr class="submit"><td></td><td><a data-attachment-id="' . $post -> ID . '" class="wp-set-background">' . __ ( 'Set as background' ) . '</a></td></tr>' );
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$form_fields [ 'context' ] = array ( 'input' => 'hidden' , 'value' => 'custom-background' );
}
return $form_fields ;
}
function filter_upload_tabs ( $tabs ){
if ( isset ( $_REQUEST [ 'context' ] ) && $_REQUEST [ 'context' ] == 'custom-background' )
return array ( 'library' => __ ( 'Media Library' ) );
return $tabs ;
}
public function wp_set_background_image () {
if ( ! current_user_can ( 'edit_theme_options' ) || ! isset ( $_POST [ 'attachment_id' ] ) ) exit ;
$attachment_id = absint ( $_POST [ 'attachment_id' ]);
$sizes = array_keys ( apply_filters ( 'image_size_names_choose' , array ( 'thumbnail' => __ ( 'Thumbnail' ), 'medium' => __ ( 'Medium' ), 'large' => __ ( 'Large' ), 'full' => __ ( 'Full Size' )) ));
$size = 'thumbnail' ;
if ( in_array ( $_POST [ 'size' ], $sizes ) )
$size = esc_attr ( $_POST [ 'size' ] );
update_post_meta ( $attachment_id , '_wp_attachment_is_custom_background' , get_option ( 'stylesheet' ) );
$url = wp_get_attachment_image_src ( $attachment_id , $size );
$thumbnail = wp_get_attachment_image_src ( $attachment_id , 'thumbnail' );
set_theme_mod ( 'background_image' , esc_url ( $url [ 0 ] ) );
set_theme_mod ( 'background_image_thumb' , esc_url ( $thumbnail [ 0 ] ) );
exit ;
}
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}