1 files changed, 75 insertions, 0 deletions
diff --git a/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/layout/gle2/SubmenuAction.java b/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/layout/gle2/SubmenuAction.java
new file mode 100644
index 000000000..0923dda79
--- /dev/null
+++ b/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/layout/gle2/SubmenuAction.java
@@ -0,0 +1,75 @@
+
+package com.android.ide.eclipse.adt.internal.editors.layout.gle2;
+
+import org.eclipse.jface.action.Action;
+import org.eclipse.jface.action.ActionContributionItem;
+import org.eclipse.jface.action.IAction;
+import org.eclipse.jface.action.IMenuCreator;
+import org.eclipse.swt.events.MenuEvent;
+import org.eclipse.swt.events.MenuListener;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Menu;
+import org.eclipse.swt.widgets.MenuItem;
+
+/**
+ * Action which creates a submenu that is dynamically populated by subclasses
+ */
+public abstract class SubmenuAction extends Action implements MenuListener, IMenuCreator {
+    private Menu mMenu;
+
+    public SubmenuAction(String title) {
+        super(title, IAction.AS_DROP_DOWN_MENU);
+    }
+
+    @Override
+    public IMenuCreator getMenuCreator() {
+        return this;
+    }
+
+    @Override
+    public void dispose() {
+        if (mMenu != null) {
+            mMenu.dispose();
+            mMenu = null;
+        }
+    }
+
+    @Override
+    public Menu getMenu(Control parent) {
+        return null;
+    }
+
+    @Override
+    public Menu getMenu(Menu parent) {
+        mMenu = new Menu(parent);
+        mMenu.addMenuListener(this);
+        return mMenu;
+    }
+
+    @Override
+    public void menuHidden(MenuEvent e) {
+    }
+
+    protected abstract void addMenuItems(Menu menu);
+
+    @Override
+    public void menuShown(MenuEvent e) {
+        // TODO: Replace this stuff with manager.setRemoveAllWhenShown(true);
+        MenuItem[] menuItems = mMenu.getItems();
+        for (int i = 0; i < menuItems.length; i++) {
+            menuItems[i].dispose();
+        }
+        addMenuItems(mMenu);
+    }
+
+    protected void addDisabledMessageItem(String message) {
+        IAction action = new Action(message, IAction.AS_PUSH_BUTTON) {
+            @Override
+            public void run() {
+            }
+        };
+        action.setEnabled(false);
+        new ActionContributionItem(action).fill(mMenu, -1);
+
+    }
+}