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<?php
/**
* Theme editor administration panel.
*
* @package WordPress
* @subpackage Administration
*/

/** WordPress Administration Bootstrap */
require_once('./admin.php');

if ( is_multisite() && ! is_network_admin() ) {
wp_redirect( network_admin_url( 'theme-editor.php' ) );
exit();
}

if ( !current_user_can('edit_themes') )
wp_die('<p>'.__('You do not have sufficient permissions to edit templates for this site.').'</p>');

$title = __("Edit Themes");
$parent_file = 'themes.php';

get_current_screen()->add_help_tab( array(
'id' => 'overview',
'title' => __('Overview'),
'content' =>
'<p>' . __('You can use the Theme Editor to edit the individual CSS and PHP files which make up your theme.') . '</p>
<p>' . __('Begin by choosing a theme to edit from the dropdown menu and clicking Select. A list then appears of all the template files. Clicking once on any file name causes the file to appear in the large Editor box.') . '</p>
<p>' . __('For PHP files, you can use the Documentation dropdown to select from functions recognized in that file. Lookup takes you to a web page with reference material about that particular function.') . '</p>
<p>' . __('After typing in your edits, click Update File.') . '</p>
<p>' . __('<strong>Advice:</strong> think very carefully about your site crashing if you are live-editing the theme currently in use.') . '</p>
<p>' . __('Upgrading to a newer version of the same theme will override changes made here. To avoid this, consider creating a <a href="http://codex.wordpress.org/Child_Themes" target="_blank">child theme</a> instead.') . '</p>' .
( is_network_admin() ? '<p>' . __('Any edits to files from this screen will be reflected on all sites in the network.') . '</p>' : '' )
) );

get_current_screen()->set_help_sidebar(
'<p><strong>' . __('For more information:') . '</strong></p>' .
'<p>' . __('<a href="http://codex.wordpress.org/Theme_Development" target="_blank">Documentation on Theme Development</a>') . '</p>' .
'<p>' . __('<a href="http://codex.wordpress.org/Using_Themes" target="_blank">Documentation on Using Themes</a>') . '</p>' .
'<p>' . __('<a href="http://codex.wordpress.org/Editing_Files" target="_blank">Documentation on Editing Files</a>') . '</p>' .
'<p>' . __('<a href="http://codex.wordpress.org/Template_Tags" target="_blank">Documentation on Template Tags</a>') . '</p>' .
'<p>' . __('<a href="http://wordpress.org/support/" target="_blank">Support Forums</a>') . '</p>'
);

wp_reset_vars( array( 'action', 'error', 'file', 'theme' ) );

if ( $theme )
$stylesheet = urldecode( $theme );
else
$stylesheet = get_stylesheet();

$theme = wp_get_theme( $stylesheet );

if ( ! $theme->exists() )
wp_die( __( 'The requested theme does not exist.' ) );

if ( $theme->errors() && 'theme_no_stylesheet' == $theme->errors()->get_error_code() )
wp_die( __( 'The requested theme does not exist.' ) . ' ' . $theme->errors()->get_error_message() );

$allowed_files = $theme->get_files( 'php', 1 );
$has_templates = ! empty( $allowed_files );
$style_files = $theme->get_files( 'css' );
$allowed_files['style.css'] = $style_files['style.css'];
$allowed_files += $style_files;

if ( empty( $file ) ) {
$relative_file = 'style.css';
$file = $allowed_files['style.css'];
} else {
$relative_file = urldecode( stripslashes( $file ) );
$file = $theme->get_stylesheet_directory() . '/' . $relative_file;
}

validate_file_to_edit( $file, $allowed_files );
$scrollto = isset( $_REQUEST['scrollto'] ) ? (int) $_REQUEST['scrollto'] : 0;

switch( $action ) {
case 'update':
check_admin_referer( 'edit-theme_' . $file . $stylesheet );
$newcontent = stripslashes( $_POST['newcontent'] );
$location = 'theme-editor.php?file=' . urlencode( $relative_file ) . '&theme=' . urlencode( $stylesheet ) . '&scrollto=' . $scrollto;
if ( is_writeable( $file ) ) {
//is_writable() not always reliable, check return value. see comments @ http://uk.php.net/is_writable
$f = fopen( $file, 'w+' );
if ( $f !== false ) {
fwrite( $f, $newcontent );
fclose( $f );
$location .= '&updated=true';
$theme->cache_delete();
}
}
wp_redirect( $location );
exit;
break;

default:

require_once( ABSPATH . 'wp-admin/admin-header.php' );

update_recently_edited( $file );

if ( ! is_file( $file ) )
$error = true;

$content = '';
if ( ! $error && filesize( $file ) > 0 ) {
$f = fopen($file, 'r');
$content = fread($f, filesize($file));

if ( '.php' == substr( $file, strrpos( $file, '.' ) ) ) {
$functions = wp_doc_link_parse( $content );

$docs_select = '<select name="docs-list" id="docs-list">';
$docs_select .= '<option value="">' . esc_attr__( 'Function Name...' ) . '</option>';
foreach ( $functions as $function ) {
$docs_select .= '<option value="' . esc_attr( urlencode( $function ) ) . '">' . htmlspecialchars( $function ) . '()</option>';
}
$docs_select .= '</select>';
}

$content = esc_textarea( $content );
}

?>
<?php if ( isset( $_GET['updated'] ) ) : ?>
<div id="message" class="updated"><p><?php _e( 'File edited successfully.' ) ?></p></div>
<?php endif;

$description = get_file_description( $file );
$file_show = array_search( $file, array_filter( $allowed_files ) );
if ( $description != $file_show )
$description .= ' <span>(' . $file_show . ')</span>';
?>
<div class="wrap">
<?php screen_icon(); ?>
<h2><?php echo esc_html( $title ); ?></h2>

<div class="fileedit-sub">
<div class="alignleft">
<h3><?php echo $theme->display('Name'); if ( $description ) echo ': ' . $description; ?></h3>
</div>
<div class="alignright">
<form action="theme-editor.php" method="post">
<strong><label for="theme"><?php _e('Select theme to edit:'); ?> </label></strong>
<select name="theme" id="theme">
<?php
foreach ( wp_get_themes( array( 'errors' => null ) ) as $a_stylesheet => $a_theme ) {
if ( $a_theme->errors() && 'theme_no_stylesheet' == $a_theme->errors()->get_error_code() )
continue;

$selected = $a_stylesheet == $stylesheet ? ' selected="selected"' : '';
echo "\n\t" . '<option value="' . esc_attr( $a_stylesheet ) . '"' . $selected . '>' . $a_theme->display('Name') . '</option>';
}
?>
</select>
<?php submit_button( __( 'Select' ), 'button', 'Submit', false ); ?>
</form>
</div>
<br class="clear" />
</div>
<?php
if ( $theme->errors() )
echo '<div class="error"><p><strong>' . __( 'This theme is broken.' ) . '</strong> ' . $theme->errors()->get_error_message() . '</p></div>';
?>
<div id="templateside">
<?php
if ( $allowed_files ) :
if ( $has_templates || $theme->parent() ) :
?>
<h3><?php _e('Templates'); ?></h3>
<?php if ( $theme->parent() ) : ?>
<p class="howto"><?php printf( __( 'This child theme inherits templates from a parent theme, %s.' ), '<a href="' . self_admin_url('theme-editor.php?theme=' . urlencode( $theme->get_template() ) ) . '">' . $theme->parent()->display('Name') . '</a>' ); ?></p>
<?php endif; ?>
<ul>
<?php
endif;

foreach ( $allowed_files as $filename => $absolute_filename ) :
if ( 'style.css' == $filename )
echo "\t</ul>\n\t<h3>" . _x( 'Styles', 'Theme stylesheets in theme editor' ) . "</h3>\n\t<ul>\n";

$file_description = get_file_description( $absolute_filename );
if ( $file_description != basename( $filename ) )
$file_description .= '<br /><span class="nonessential">(' . $filename . ')</span>';

if ( $absolute_filename == $file )
$file_description = '<span class="highlight">' . $file_description . '</span>';
?>
<li><a href="theme-editor.php?file=<?php echo urlencode( $filename ) ?>&amp;theme=<?php echo urlencode( $stylesheet ) ?>"><?php echo $file_description; ?></a></li>
<?php
endforeach;
?>
</ul>
<?php endif; ?>
</div>
<?php if ( $error ) :
echo '<div class="error"><p>' . __('Oops, no such file exists! Double check the name and try again, merci.') . '</p></div>';
else : ?>
<form name="template" id="template" action="theme-editor.php" method="post">
<?php wp_nonce_field( 'edit-theme_' . $file . $stylesheet ); ?>
<div><textarea cols="70" rows="30" name="newcontent" id="newcontent" tabindex="1"><?php echo $content ?></textarea>
<input type="hidden" name="action" value="update" />
<input type="hidden" name="file" value="<?php echo esc_attr( $relative_file ); ?>" />
<input type="hidden" name="theme" value="<?php echo esc_attr( $theme->get_stylesheet() ); ?>" />
<input type="hidden" name="scrollto" id="scrollto" value="<?php echo $scrollto; ?>" />
</div>
<?php if ( ! empty( $functions ) ) : ?>
<div id="documentation" class="hide-if-no-js">
<label for="docs-list"><?php _e('Documentation:') ?></label>
<?php echo $docs_select; ?>
<input type="button" class="button" value=" <?php esc_attr_e( 'Lookup' ); ?> " onclick="if ( '' != jQuery('#docs-list').val() ) { window.open( 'http://api.wordpress.org/core/handbook/1.0/?function=' + escape( jQuery( '#docs-list' ).val() ) + '&amp;locale=<?php echo urlencode( get_locale() ) ?>&amp;version=<?php echo urlencode( $wp_version ) ?>&amp;redirect=true'); }" />
</div>
<?php endif; ?>

<div>
<?php if ( is_child_theme() && $theme->get_stylesheet() == get_template() ) : ?>
<p><?php if ( is_writeable( $file ) ) { ?><strong><?php _e( 'Caution:' ); ?></strong><?php } ?>
<?php _e( 'This is a file in your current parent theme.' ); ?></p>
<?php endif; ?>
<?php
if ( is_writeable( $file ) ) :
submit_button( __( 'Update File' ), 'primary', 'submit', true, array( 'tabindex' => '2' ) );
else : ?>
<p><em><?php _e('You need to make this file writable before you can save your changes. See <a href="http://codex.wordpress.org/Changing_File_Permissions">the Codex</a> for more information.'); ?></em></p>
<?php endif; ?>
</div>
</form>
<?php
endif; // $error
?>
<br class="clear" />
</div>
<script type="text/javascript">
/* <![CDATA[ */
jQuery(document).ready(function($){
$('#template').submit(function(){ $('#scrollto').val( $('#newcontent').scrollTop() ); });
$('#newcontent').scrollTop( $('#scrollto').val() );
});
/* ]]> */
</script>
<?php
break;
}

include(ABSPATH . 'wp-admin/admin-footer.php' );
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