Pull request #2467: REPORT-40606 【回归测试】表单模板如果未选择组件进行多次拖动，再切换模板就不行了，报错

Merge in DESIGN/design from ~PENGDA/design:release/10.0 to release/10.0

* commit '84dc75af2cb0fedd3c8d0395a4764e351a87c5ce':
  REPORT-40606 【回归测试】表单模板如果未选择组件进行多次拖动，再切换模板就不行了，报错
  REPORT-40606 【回归测试】表单模板如果未选择组件进行多次拖动，再切换模板就不行了，报错
  REPORT-40606 【回归测试】表单模板如果未选择组件进行多次拖动，再切换模板就不行了，报错

designer-form/src/main/java/com/fr/design/mainframe/FormDesigner.java

@@ -619,8 +619,9 @@ public class FormDesigner extends TargetComponent<Form> implements TreeSelection
         if (paraComponent != null && paraComponent.acceptType(XWParameterLayout.class)) {
             return true;
         } else {
-            if (this.getSelectionModel().getSelection().getSelectedCreator().getParent() != null
-                    && ((XLayoutContainer) this.getSelectionModel().getSelection().getSelectedCreator().getParent()).acceptType(XWAbsoluteLayout.class)) {
+            XCreator creator = this.getSelectionModel().getSelection().getSelectedCreator();
+            if (creator != null && creator.getParent() != null
+                    && ((XLayoutContainer) creator.getParent()).acceptType(XWAbsoluteLayout.class)) {
                 return true;
             }
         }
@@ -1337,6 +1338,9 @@ public class FormDesigner extends TargetComponent<Form> implements TreeSelection
     // 当前选中控件可以上移一层吗？
     public boolean isCurrentComponentMovableUp() {
         XCreator creator = getSelectionModel().getSelection().getSelectedCreator();
+        if (null == creator) {
+            return false;
+        }
         XLayoutContainer container = (XLayoutContainer) creator.getParent();
         if (container == null || !container.supportInnerOrderChangeActions()) {
             return false;
@@ -1347,6 +1351,9 @@ public class FormDesigner extends TargetComponent<Form> implements TreeSelection
     // 当前选中控件可以下移一层吗？
     public boolean isCurrentComponentMovableDown() {
         XCreator creator = getSelectionModel().getSelection().getSelectedCreator();
+        if (null == creator) {
+            return false;
+        }
         XLayoutContainer container = (XLayoutContainer) creator.getParent();
         if (container == null || !container.supportInnerOrderChangeActions()) {
             return false;