Changeset 3573

Timestamp:

02/28/06 03:57:08 (3 years ago)

Author:

ryan

Message:

wp_dropdown_pages() and walk_page_tree()

Files:

• trunk/wp-includes/functions.php (modified) (1 diff)
• trunk/wp-includes/template-functions-post.php (modified) (7 diffs)

trunk/wp-includes/functions.php

@@ -744 +744 @@
-        return $_page;
-    }
+}
+
+function walk_page_tree($pages, $to_depth, $start_element_callback, $end_element_callback = '', $start_level_callback = '', $end_level_callback = '') {
+    $args = array_slice(func_get_args(), 6);
+    $parents = array();
+    $depth = 0;
+    $previous_page = '';
+    $output = '';
+
+    $last_page->post_parent = 0;
+    $last_page->post_id = 0;
+    $pages[] = $last_page;
+
+    foreach ( $pages as $page ) {
+        if ( !empty($previous_page) && ($page->post_parent == $previous_page->ID) ) {
+            // Previous page is my parent. Descend a level.
+            array_unshift($parents, $page);
+            $depth++;
+            if ( !$to_depth || ($depth < $to_depth) )
+                if ( !empty($start_level_callback) ) {
+                    $cb_args = array_merge( array($output, $depth), $args);
+                    $output = call_user_func_array($start_level_callback, $cb_args);
+                }
+        } else if ( $depth && ($page->post_parent == $parents[0]->ID) ) {
+            // On the same level as previous page.
+            if ( !$to_depth || ($depth < $to_depth) ) {
+                if ( !empty($end_element_callback) ) {
+                    $cb_args = array_merge( array($output, $previous_page, $depth), $args);
+                    $output = call_user_func_array($end_element_callback, $cb_args);
+                }
+            }
+        } else if ( $depth ) {
+            // Ascend one or more levels.
+            if ( !$to_depth || ($depth < $to_depth) ) {
+                if ( !empty($end_element_callback) ) {
+                    $cb_args = array_merge( array($output, $previous_page, $depth), $args);
+                    $output = call_user_func_array($end_element_callback, $cb_args);
+                }
+            }
+
+            while ( $parent = array_shift($parents)) {
+                $depth--;
+                if ( !$to_depth || ($depth < $to_depth) ) {
+                    if ( !empty($end_level_callback) ) {
+                        $cb_args = array_merge( array($output, $depth), $args);
+                        $output = call_user_func_array($end_level_callback, $cb_args);
+                    }
+                    if ( !empty($end_element_callback) ) {
+                        $cb_args = array_merge( array($output, $parent, $depth), $args);
+                        $output = call_user_func_array($end_element_callback, $cb_args);
+                    }
+                }
+                if ( $page->post_parent == $parent->ID ) {
+                    break;
+                }
+            }
+        } else if ( !empty($previous_page) ) {
+            // Close off previous page.
+            if ( !$to_depth || ($depth < $to_depth) ) {
+                if ( !empty($end_element_callback) ) {
+                    $cb_args = array_merge( array($output, $previous_page, $depth), $args);
+                    $output = call_user_func_array($end_element_callback, $cb_args);
+                }
+            }
+        }
+
+        // Start the page.
+        if ( !$to_depth || ($depth < $to_depth) ) {
+            if ( !empty($start_element_callback) && ($page->ID != 0) ) {
+                $cb_args = array_merge( array($output, $page, $depth), $args);
+                $output = call_user_func_array($start_element_callback, $cb_args);
+            }
+        }
+
+        $previous_page = $page;
+    }
+
+    return $output;
-}
-

trunk/wp-includes/template-functions-post.php

@@ -296 +296 @@
-function &get_pages($args = '') {
-    global $wpdb;
-
-    parse_str($args, $r);
-
@@ -305 +304 @@
-    if ( !isset($r['sort_order']) )
-        $r['sort_order'] = 'ASC';
+    if ( !isset($r['hierarchical']) )
+        $r['hierarchical'] = 1;
-
-    $exclusions = '';
@@ -328 +329 @@
-    update_page_cache($pages);
-
-
+|| $r['hierarchical'] 
-        $pages = & get_page_children($r['child_of'], $pages);
-
@@ -334 +335 @@
-}
-
+function wp_dropdown_pages($args = '') {
+    parse_str($args, $r);
+    if ( !isset($r['depth']) )
+        $r['depth'] = 0;
+    if ( !isset($r['child_of']) )
+        $r['child_of'] = 0;
+    if ( !isset($r['echo']) )
+        $r['echo'] = 1;
+    if ( !isset($r['selected']) )
+        $r['selected'] = 0;
+
+    extract($r);
+
+    $pages = get_pages($args);
+    $output = '';
+
+    if ( ! empty($pages) ) {
+        $output = "<select name='page_id'>\n";
+        $output .= walk_page_tree($pages, $depth, '_page_dropdown_element', '', '', '', $selected);
+        $output .= "</select>\n";
+    }
+
+    $output = apply_filters('wp_dropdown_pages', $output);
+
+    if ( $echo )
+        echo $output;
+
+    return $output;
+}
+
+function _page_dropdown_element($output, $page, $depth, $selected) {
+    $pad = str_repeat('&nbsp;', $depth * 3);
+
+    $output .= "\t<option value=\"$page->ID\"";
+    if ( $page->ID == $selected )
+        $output .= ' selected="selected"';
+    $output .= '>';
+    $title = wp_specialchars($page->post_title);
+    $output .= "$pad$title";
+    $output .= "</option>\n";
+
+    return $output;
+}
-
-function wp_list_pages($args = '') {
@@ -341 +385 @@
-    if ( !isset($r['show_date']) )
-        $r['show_date'] = '';
+    if ( !isset($r['date_format']) )
+        $r['date_format'] = get_settings('date_format');
-    if ( !isset($r['child_of']) )
-        $r['child_of'] = 0;
@@ -351 +397 @@
-
-    // Query pages.
-& 
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-        if ( $r['title_li'] )
-            $output .= '<li class="pagenav">' . $r['title_li'] . '<ul>';
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-        if ( $r['title_li'] )
-            $output .= '</ul></li>';
@@ -399 +419 @@
-}
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-    if ( $depth )
-        $indent = str_repeat("\t", $depth);
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-}
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