From a1d8c65604180ba802da5712381991b12d7a3e4a Mon Sep 17 00:00:00 2001
From: ryan <ryan@1a063a9b-81f0-0310-95a4-ce76da25c4cd>
Date: Tue, 21 Dec 2010 16:50:16 +0000
Subject: [PATCH] Add delete support to network themes. Props PeteMall. fixes
 #15707

git-svn-id: http://svn.automattic.com/wordpress/trunk@17101 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 .../class-wp-ms-themes-list-table.php         | 27 ++++--
 wp-admin/network/themes.php                   | 94 +++++++++++++++++++
 2 files changed, 111 insertions(+), 10 deletions(-)

diff --git a/wp-admin/includes/class-wp-ms-themes-list-table.php b/wp-admin/includes/class-wp-ms-themes-list-table.php
index 29c09f9b0..6720cefd5 100644
--- a/wp-admin/includes/class-wp-ms-themes-list-table.php
+++ b/wp-admin/includes/class-wp-ms-themes-list-table.php
@@ -231,9 +231,12 @@ class WP_MS_Themes_List_Table extends WP_List_Table {
 			$actions['enable-selected'] = $this->is_site_themes ? __( 'Enable' ) : __( 'Network Enable' );
 		if ( 'disabled' != $status )
 			$actions['disable-selected'] = $this->is_site_themes ? __( 'Disable' ) : __( 'Network Disable' );
-		if ( current_user_can( 'update_themes' ) && !$this->is_site_themes )
-			$actions['update-selected'] = __( 'Update' );
-
+		if ( ! $this->is_site_themes ) {
+			if ( current_user_can( 'delete_themes' ) )
+				$actions['delete-selected'] = __( 'Delete' );
+			if ( current_user_can( 'update_themes' ) )
+				$actions['update-selected'] = __( 'Update' );
+		}
 		return $actions;
 	}
 
@@ -265,22 +268,26 @@ class WP_MS_Themes_List_Table extends WP_List_Table {
 		$actions = array(
 			'enable' => '',
 			'disable' => '',
-			'edit' => ''
+			'edit' => '',
+			'delete' => ''
 		);
 
 		$theme_key = esc_html( $theme['Stylesheet'] );
 
 		if ( empty( $theme['enabled'] ) )
-			$actions['enable'] = '<a href="' . wp_nonce_url($url . 'action=enable&amp;theme=' . $theme_key . '&amp;paged=' . $page . '&amp;s=' . $s, 'enable-theme_' . $theme_key) . '" title="' . __('Enable this theme') . '" class="edit">' . ( $this->is_site_themes ? __( 'Enable' ) : __( 'Network Enable' ) ) . '</a>';
+			$actions['enable'] = '<a href="' . esc_url( wp_nonce_url($url . 'action=enable&amp;theme=' . $theme_key . '&amp;paged=' . $page . '&amp;s=' . $s, 'enable-theme_' . $theme_key) ) . '" title="' . esc_attr__('Enable this theme') . '" class="edit">' . ( $this->is_site_themes ? __( 'Enable' ) : __( 'Network Enable' ) ) . '</a>';
 		else
-			$actions['disable'] = '<a href="' . wp_nonce_url($url . 'action=disable&amp;theme=' . $theme_key . '&amp;paged=' . $page . '&amp;s=' . $s, 'disable-theme_' . $theme_key) . '" title="' . __('Disable this theme') . '">' . ( $this->is_site_themes ? __( 'Disable' ) : __( 'Network Disable' ) ) . '</a>';
+			$actions['disable'] = '<a href="' . esc_url( wp_nonce_url($url . 'action=disable&amp;theme=' . $theme_key . '&amp;paged=' . $page . '&amp;s=' . $s, 'disable-theme_' . $theme_key) ) . '" title="' . esc_attr__('Disable this theme') . '">' . ( $this->is_site_themes ? __( 'Disable' ) : __( 'Network Disable' ) ) . '</a>';
 
 		if ( current_user_can('edit_themes') )
-			$actions['edit'] = '<a href="theme-editor.php?theme=' . $theme['Name'] . '" title="' . __('Open this theme in the Theme Editor') . '" class="edit">' . __('Edit') . '</a>';
+			$actions['edit'] = '<a href="' . esc_url('theme-editor.php?theme=' . $theme['Name'] ) . '" title="' . esc_attr__('Open this theme in the Theme Editor') . '" class="edit">' . __('Edit') . '</a>';
+			
+		if ( empty( $theme['enabled'] ) && current_user_can( 'delete_themes' ) && ! $this->is_site_themes )
+			$actions['delete'] = '<a href="' . esc_url( wp_nonce_url( 'themes.php?action=delete-selected&amp;checked[]=' . $theme_key . '&amp;theme_status=' . $context . '&amp;paged=' . $page . '&amp;s=' . $s, 'bulk-themes' ) ) . '" title="' . esc_attr__( 'Delete this theme' ) . '" class="delete">' . __( 'Delete' ) . '</a>';
 
 		$actions = apply_filters( 'theme_action_links', array_filter( $actions ), $theme_key, $theme, $context );
 		$actions = apply_filters( "theme_action_links_$theme_key", $actions, $theme_key, $theme, $context );
-
+ 
 		$class = empty( $theme['enabled'] ) ? 'inactive' : 'active';
 		$checkbox_id = md5($theme['Name']) . "_checkbox";
 		$checkbox = "<input type='checkbox' name='checked[]' value='" . esc_attr( $theme_key ) . "' id='" . $checkbox_id . "' /><label class='screen-reader-text' for='" . $checkbox_id . "' >" . __('Select') . " " . $theme['Name'] . "</label>";
@@ -319,11 +326,11 @@ class WP_MS_Themes_List_Table extends WP_List_Table {
 					if ( !empty( $theme['Author'] ) ) {
 						$author = $theme['Author'];
 						if ( !empty( $theme['Author URI'] ) )
-							$author = '<a href="' . $theme['Author URI'] . '" title="' . __( 'Visit author homepage' ) . '">' . $theme['Author'] . '</a>';
+							$author = '<a href="' . $theme['Author URI'] . '" title="' . esc_attr__( 'Visit author homepage' ) . '">' . $theme['Author'] . '</a>';
 						$theme_meta[] = sprintf( __( 'By %s' ), $author );
 					}
 					if ( !empty( $theme['Theme URI'] ) )
-						$theme_meta[] = '<a href="' . $theme['Theme URI'] . '" title="' . __( 'Visit theme homepage' ) . '">' . __( 'Visit Theme Site' ) . '</a>';
+						$theme_meta[] = '<a href="' . $theme['Theme URI'] . '" title="' . esc_attr__( 'Visit theme homepage' ) . '">' . __( 'Visit Theme Site' ) . '</a>';
 
 					$theme_meta = apply_filters( 'theme_row_meta', $theme_meta, $theme_key, $theme, $status );
 					echo implode( ' | ', $theme_meta );
diff --git a/wp-admin/network/themes.php b/wp-admin/network/themes.php
index a798e2706..dd7b6e699 100644
--- a/wp-admin/network/themes.php
+++ b/wp-admin/network/themes.php
@@ -65,6 +65,95 @@ if ( $action ) {
 				unset( $allowed_themes[ $theme ] );
 			update_site_option( 'allowedthemes', $allowed_themes );
 			break;
+		case 'delete':
+			check_admin_referer('delete-theme_' . $_GET['template']);
+			if ( !current_user_can('delete_themes') )
+				wp_die( __( 'Cheatin&#8217; uh?' ) );
+			delete_theme($_GET['template']);
+			wp_redirect( network_admin_url('themes.php?deleted=true') );
+			exit;
+			break;
+		case 'delete-selected':
+			if ( ! current_user_can( 'delete_themes' ) )
+				wp_die( __('You do not have sufficient permissions to delete themes for this site.') );
+
+			$themes = isset( $_REQUEST['checked'] ) ? (array) $_REQUEST['checked'] : array();
+			if ( empty( $themes ) ) {
+				wp_redirect( wp_get_referer() );
+				exit;
+			}
+
+			$main_theme = get_current_theme();
+			$files_to_delete = $theme_info = array();
+			foreach( $themes as $key => $theme ) {
+				$data = get_theme_data( WP_CONTENT_DIR . '/themes/' . $theme . '/style.css' );
+				if ( $data['Name'] == $main_theme ) {
+					unset( $themes[$key] );
+				} else {
+					$files_to_delete = array_merge( $files_to_delete, list_files( WP_CONTENT_DIR . "/themes/$theme" ) );					
+					$theme_info[ $theme ] = $data;
+				}
+			}
+			
+			if ( empty( $themes ) ) {
+				wp_redirect( add_query_arg( 'error', 'main', wp_get_referer() ) );
+				exit;
+			}
+			
+			include(ABSPATH . 'wp-admin/update.php');
+
+			$parent_file = 'themes.php';
+
+			if ( ! isset( $_REQUEST['verify-delete'] ) ) {
+				wp_enqueue_script( 'jquery' );
+				require_once( ABSPATH . 'wp-admin/admin-header.php' );
+				?>
+			<div class="wrap">
+				<?php
+					$themes_to_delete = count( $themes );
+					screen_icon();
+					echo '<h2>' . _n( 'Delete Theme', 'Delete Themes', $themes_to_delete ) . '</h2>';
+				?>
+				<div class="error"><p><strong><?php _e( 'Caution:' ); ?></strong> <?php echo _n( 'This theme may be active on other sites in the network.', 'These themes may be active on other sites in the network.', $themes_to_delete ); ?></p></div>
+				<p><?php echo _n( 'You are about to remove the following theme:', 'You are about to remove the following themes:', $themes_to_delete ); ?></p>
+					<ul class="ul-disc">
+						<?php foreach ( $theme_info as $theme )
+							echo '<li>', sprintf( __('<strong>%1$s</strong> by <em>%2$s</em>' ), esc_html( $theme['Name'] ), esc_html( $theme['AuthorName'] ) ), '</li>'; /* translators: 1: theme name, 2: theme author */ ?>
+					</ul>
+				<p><?php _e('Are you sure you wish to delete these themes?'); ?></p>
+				<form method="post" action="<?php echo esc_url($_SERVER['REQUEST_URI']); ?>" style="display:inline;">
+					<input type="hidden" name="verify-delete" value="1" />
+					<input type="hidden" name="action" value="delete-selected" />
+					<?php
+						foreach ( (array) $themes as $theme )
+							echo '<input type="hidden" name="checked[]" value="' . esc_attr($theme) . '" />';
+					?>
+					<?php wp_nonce_field('bulk-themes') ?>
+					<?php submit_button( _n( 'Yes, Delete this theme', 'Yes, Delete these themes', $themes_to_delete ), 'button', 'submit', false ); ?>
+				</form>
+				<form method="post" action="<?php echo esc_url(wp_get_referer()); ?>" style="display:inline;">
+					<?php submit_button( __( 'No, Return me to the theme list' ), 'button', 'submit', false ); ?>
+				</form>
+
+				<p><a href="#" onclick="jQuery('#files-list').toggle(); return false;"><?php _e('Click to view entire list of files which will be deleted'); ?></a></p>
+				<div id="files-list" style="display:none;">
+					<ul class="code">
+					<?php
+						foreach ( (array) $files_to_delete as $file )
+							echo '<li>' . esc_html( str_replace( WP_CONTENT_DIR . "/themes", '', $file) ) . '</li>';
+					?>
+					</ul>
+				</div>
+			</div>
+				<?php
+				require_once(ABSPATH . 'wp-admin/admin-footer.php');
+				exit;
+			} //Endif verify-delete
+			foreach( $themes as $theme )
+				$delete_result = delete_theme( $theme );
+			wp_redirect( network_admin_url( 'themes.php?deleted=true' ) );
+			exit;
+			break;
 	}
 }
 
@@ -87,6 +176,11 @@ $parent_file = 'themes.php';
 
 require_once(ABSPATH . 'wp-admin/admin-header.php');
 
+if ( isset( $_GET['deleted'] ) ) : ?>
+<div class="updated"><p><?php _e('Theme deleted.') ?></p></div><?php
+elseif ( isset( $_GET['error'] ) && 'main' == $_GET['error'] ) : ?>
+<div class="error"><p><?php _e( 'You cannot delete a theme while it is active on the main site.' ); ?></p></div><?php
+endif;
 ?>
 
 <div class="wrap">