Ticket #7136: category_paging.diff

wp-admin/includes/template.php

@@ -4 +4 @@
 // Big Mess
 //
 
-// Dandy new recursive multiple category stuff.
-function cat_rows( $parent = 0, $level = 0, $categories = 0 ) {
-        if ( !$categories ) {
+// Ugly recursive category stuff.
+function cat_rows( $parent = 0, $level = 0, &$categories = 0, $page = 1, $per_page = 20, &$count = 0 ) {
+        if ( empty($categories) ) {
                 $args = array('hide_empty' => 0);
-                if ( !empty($_GET['s']) )
+                if ( !empty($_GET['s']) ) {
                         $args['search'] = $_GET['s'];
+                        $parent = -1;
+                }
                 $categories = get_categories( $args );
         }
 
+        if ( !$categories )
+                return false;
+
         $children = _get_term_hierarchy('category');
 
-        if ( $categories ) {
-                ob_start();
-                foreach ( $categories as $category ) {
-                        if ( $category->parent == $parent) {
-                                echo "\t" . _cat_row( $category, $level );
-                                if ( isset($children[$category->term_id]) )
-                                        cat_rows( $category->term_id, $level +1, $categories );
+        $start = ($page - 1) * $per_page;
+        $end = $start + $per_page;
+        $i = -1;
+        ob_start();
+        foreach ( $categories as $category ) {
+                if ( $count >= $end )
+                        break;
+
+                $i++;
+
+                if ( ($category->parent != $parent) && ( -1 != $parent) )
+                        continue;
+
+                // If the page starts in a subtree, print the parents.
+                if ( $count == $start && $category->parent > 0 ) {
+                        $my_parents = array();
+                        $my_parent = $category->parent;
+                        while ( $my_parent) {
+                                $my_parent = get_category($my_parent);
+                                $my_parents[] = $my_parent;
+                                if ( !$my_parent->parent )
+                                        break;
+                                $my_parent = $my_parent->parent;
                         }
+                        $num_parents = count($my_parents);
+                        while( $my_parent = array_pop($my_parents) ) {
+                                echo "\t" . _cat_row( $my_parent, $level - $num_parents );
+                                $num_parents--;
+                        }
                 }
-                $output = ob_get_contents();
-                ob_end_clean();
 
-                $output = apply_filters('cat_rows', $output);
+                if ( $count >= $start )
+                        echo "\t" . _cat_row( $category, $level );
 
-                echo $output;
-        } else {
-                return false;
+                unset($categories[$i]); // Prune the working set                
+                $count++;
+
+                if ( isset($children[$category->term_id]) )
+                        cat_rows( $category->term_id, $level + 1, $categories, $page, $per_page, $count );
+
         }
+
+        $output = ob_get_contents();
+        ob_end_clean();
+
+        $output = apply_filters('cat_rows', $output);
+
+        echo $output;
 }
 
 function _cat_row( $category, $level, $name_override = false ) {

wp-admin/categories.php

@@ -135 +135 @@
 
 <div class="tablenav">
 
+<?php
+$pagenum = absint( $_GET['pagenum'] );
+if ( empty($pagenum) )
+        $pagenum = 1;
+if( !$catsperpage || $catsperpage < 0 )
+        $catsperpage = 20;
+
+$page_links = paginate_links( array(
+        'base' => add_query_arg( 'pagenum', '%#%' ),
+        'format' => '',
+        'total' => ceil(wp_count_terms('category') / $catsperpage),
+        'current' => $pagenum
+));
+
+if ( $page_links )
+        echo "<div class='tablenav-pages'>$page_links</div>";
+?>
+
 <div class="alignleft">
 <input type="submit" value="<?php _e('Delete'); ?>" name="deleteit" class="button-secondary delete" />
 <?php wp_nonce_field('bulk-categories'); ?>
@@ -156 +174 @@
         </thead>
         <tbody id="the-list" class="list:cat">
 <?php
-cat_rows();
+$categories = array();
+cat_rows(0, 0, $categories, $pagenum, $catsperpage);
 ?>
         </tbody>
 </table>
 </form>
 
 <div class="tablenav">
+
+<?php
+if ( $page_links )
+        echo "<div class='tablenav-pages'>$page_links</div>";
+?>
 <br class="clear" />
 </div>
 <br class="clear" />