REPORT-91316 不打开任何报表的情况下，编辑工具栏点不动

designer-base/src/main/java/com/fr/design/javascript/JavaScriptActionPane.java

@@ -48,8 +48,7 @@ public abstract class JavaScriptActionPane extends UIComboBoxPane<JavaScript> {
         contentDBManiPane.add(createDBManipulationPane());
         paneList.add(new Commit2DBJavaScriptPane(this, contentDBManiPane));
         paneList.add(initEmaiPane());
-        boolean workbook = DesignerContext.getDesignerFrame().getSelectedJTemplate().isJWorkBook();
-        if (workbook) {
+        if (isWorkBookValid()) {
             paneList.add(new ExportJavaScriptPane());
         }
         paneList.add(new MobilePopupPane());
@@ -66,6 +65,16 @@ public abstract class JavaScriptActionPane extends UIComboBoxPane<JavaScript> {
         return paneList;
     }
 
+    /**
+     * 选中的JTemplate是否有效并且是否是工作簿
+     *
+     * @return 选中的JTemplate有效并且是工作簿则返回true
+     */
+    private boolean isWorkBookValid() {
+        return DesignerContext.getDesignerFrame().getSelectedJTemplate() != null
+                && DesignerContext.getDesignerFrame().getSelectedJTemplate().isJWorkBook();
+    }
+
     protected EmailPane initEmaiPane() {
         return new EmailPane();
     }