* ZIN: Attach onClickItem event to programmenu widget.

lib/zin/wg/programmenu/css/v1.css

@@ -1,6 +1,7 @@
 .program-menu {width: 200px; max-height: 100%; margin: -5px 0;}
 .program-menu .tree[data-zin-id] {border: 1px solid #E6EAF1; box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1); overflow-y: auto; width: 200px !important; background-color: #fff; padding-bottom: 20px;}
 .program-menu .tree-item.tree-heading {padding: 16px 10px; font-size: 12px; color: var(--color-slate-600)}
+.program-menu .tree-item .tree-item-content span {cursor: pointer;}
 
 .program-menu .icon-container      {width: 20px; height: 20px; display: flex; justify-content: center; align-items: center; border-radius: 50%; border: 1px solid #0066fa;}
 .program-menu .icon-container.down {background-color: inherit;}

lib/zin/wg/programmenu/js/v1.js

@@ -1,5 +1,5 @@
-function toggleIcon() {
+function toggleIcon(e) {
     const $pm = $(e.target).closest('.program-menu');
-    const show = $pm.attr('data-show');
+    let show = $pm.attr('data-show');
     $pm.attr('data-show', (++show) % 2);
 }

lib/zin/wg/programmenu/v1.php

@@ -10,7 +10,8 @@ class programMenu extends wg
         'activeClass?: string="active"',
         'activeIcon?: string="check"',
         'activeKey?: string',
-        'closeLink?: string'
+        'closeLink?: string',
+        'onClickItem?: string'
     );
 
     public static function getPageCSS(): string|false
@@ -34,8 +35,15 @@ class programMenu extends wg
             if(isset($child->icon)) $item['icon'] = $child->icon;
 
             $items = $this->buildMenuTree($item['items'], $child->id);
-            if(count($items) !== 0) $item['items'] = $items;
-            else                    unset($item['items']);
+
+            if(count($items) !== 0)
+            {
+                $item['items'] = $items;
+            }
+            else
+            {
+                unset($item['items']);
+            }
 
             $parent[] = $item;
         }
@@ -64,7 +72,13 @@ class programMenu extends wg
     {
         $items = $this->buildMenuTree(array(), 0);
         array_unshift($items, array('type' => 'heading', 'text' => '筛选项目集'));
-        return array('items' => $items);
+        $props = array('items' => $items);
+
+        /* Attach click event function. */
+        $onClickItem = $this->prop('onClickItem');
+        if($onClickItem) $props['onClickItem'] = $onClickItem;
+
+        return $props;
     }
 
     private function closeBtn()