REPORT-4634 组件叠加体验优化=>2=>修复点击控件树的npe问题

designer_form/src/com/fr/design/mainframe/ComponentTree.java

@@ -18,6 +18,7 @@ public class ComponentTree extends JTree {
 
     private FormDesigner designer;
     private ComponentTreeModel model;
+    private UITreeUI uiTreeUI = new UITreeUI();
     private static final int PADDING_LEFT = 10;
     private static final int PADDING_TOP = 8;
 
@@ -33,7 +34,7 @@ public class ComponentTree extends JTree {
         this.refreshTreeRoot();
         addTreeSelectionListener(designer);
         setEditable(true);
-        setUI(new UITreeUI());
+        setUI(uiTreeUI);
         setBorder(BorderFactory.createEmptyBorder(PADDING_TOP, PADDING_LEFT, 0, 0));
     }
 
@@ -101,12 +102,10 @@ public class ComponentTree extends JTree {
      */
     public void refreshUI() {
         updateUI();
+        setUI(uiTreeUI);
     }
 
 
-
-
-
     public TreePath[] getSelectedTreePath() {
         XCreator[] creators = designer.getSelectionModel().getSelection().getSelectedCreators();
         TreePath[] paths = new TreePath[creators.length];
@@ -117,8 +116,6 @@ public class ComponentTree extends JTree {
     }
 
 
-
-
     /**
      *搜索指定名称的路径
      *