REPORT-4634 组件叠加体验优化=>bug修改=>修复选中form报错的问题

designer_form/src/com/fr/design/designer/beans/models/SelectionModel.java

@@ -81,7 +81,9 @@ public class SelectionModel {
         // 如果父层是scale和title两个专属容器，返回其父层，组件本身是不让被选中的
         if (comp != designer.getRootComponent() && comp != designer.getParaComponent()) {
             XCreator parentContainer = (XCreator) comp.getParent();
-            comp = parentContainer.isDedicateContainer() ? parentContainer : comp;
+            if (parentContainer != null) {
+                comp = parentContainer.isDedicateContainer() ? parentContainer : comp;
+            }
         }
         if (selection.removeSelectedCreator(comp) || selection.addSelectedCreator(comp)) {
             designer.getEditListenerTable().fireCreatorModified(comp, DesignerEvent.CREATOR_SELECTED);

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

@@ -1140,6 +1140,9 @@ public class FormDesigner extends TargetComponent<Form> implements TreeSelection
     public boolean isCurrentComponentMovableUp() {
         XCreator creator = getSelectionModel().getSelection().getSelectedCreator();
         Container container = creator.getParent();
+        if (container == null) {
+            return false;
+        }
         return creator.isMovable() && container.getComponentZOrder(creator) > 0;
     }
 
@@ -1147,6 +1150,9 @@ public class FormDesigner extends TargetComponent<Form> implements TreeSelection
     public boolean isCurrentComponentMovableDown() {
         XCreator creator = getSelectionModel().getSelection().getSelectedCreator();
         Container container = creator.getParent();
+        if (container == null) {
+            return false;
+        }
         return creator.isMovable() && container.getComponentZOrder(creator) < container.getComponentCount() - 1;
     }