Fix a bug propagating navigation button events from ToolbarActionBar

Add a simple internal wrapper for dealing with window callback events.
This should also make working with things like action modes from
ToolbarActionBar significantly easier in later changes.

Bug 16980711

Change-Id: I2c3d7525489a21847f4af9b80f6ebf9b34b4dd58
diff --git a/core/java/android/view/WindowCallbackWrapper.java b/core/java/android/view/WindowCallbackWrapper.java
new file mode 100644
index 0000000..35a6a76
--- /dev/null
+++ b/core/java/android/view/WindowCallbackWrapper.java
@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+package android.view;
+
+import android.view.accessibility.AccessibilityEvent;
+
+/**
+ * A simple decorator stub for Window.Callback that passes through any calls
+ * to the wrapped instance as a base implementation. Call super.foo() to call into
+ * the wrapped callback for any subclasses.
+ *
+ * @hide for internal use
+ */
+public class WindowCallbackWrapper implements Window.Callback {
+    private Window.Callback mWrapped;
+
+    public WindowCallbackWrapper(Window.Callback wrapped) {
+        if (wrapped == null) {
+            throw new IllegalArgumentException("Window callback may not be null");
+        }
+        mWrapped = wrapped;
+    }
+
+    @Override
+    public boolean dispatchKeyEvent(KeyEvent event) {
+        return mWrapped.dispatchKeyEvent(event);
+    }
+
+    @Override
+    public boolean dispatchKeyShortcutEvent(KeyEvent event) {
+        return mWrapped.dispatchKeyShortcutEvent(event);
+    }
+
+    @Override
+    public boolean dispatchTouchEvent(MotionEvent event) {
+        return mWrapped.dispatchTouchEvent(event);
+    }
+
+    @Override
+    public boolean dispatchTrackballEvent(MotionEvent event) {
+        return mWrapped.dispatchTrackballEvent(event);
+    }
+
+    @Override
+    public boolean dispatchGenericMotionEvent(MotionEvent event) {
+        return mWrapped.dispatchGenericMotionEvent(event);
+    }
+
+    @Override
+    public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
+        return mWrapped.dispatchPopulateAccessibilityEvent(event);
+    }
+
+    @Override
+    public View onCreatePanelView(int featureId) {
+        return mWrapped.onCreatePanelView(featureId);
+    }
+
+    @Override
+    public boolean onCreatePanelMenu(int featureId, Menu menu) {
+        return mWrapped.onCreatePanelMenu(featureId, menu);
+    }
+
+    @Override
+    public boolean onPreparePanel(int featureId, View view, Menu menu) {
+        return mWrapped.onPreparePanel(featureId, view, menu);
+    }
+
+    @Override
+    public boolean onMenuOpened(int featureId, Menu menu) {
+        return mWrapped.onMenuOpened(featureId, menu);
+    }
+
+    @Override
+    public boolean onMenuItemSelected(int featureId, MenuItem item) {
+        return mWrapped.onMenuItemSelected(featureId, item);
+    }
+
+    @Override
+    public void onWindowAttributesChanged(WindowManager.LayoutParams attrs) {
+        mWrapped.onWindowAttributesChanged(attrs);
+    }
+
+    @Override
+    public void onContentChanged() {
+        mWrapped.onContentChanged();
+    }
+
+    @Override
+    public void onWindowFocusChanged(boolean hasFocus) {
+        mWrapped.onWindowFocusChanged(hasFocus);
+    }
+
+    @Override
+    public void onAttachedToWindow() {
+        mWrapped.onAttachedToWindow();
+    }
+
+    @Override
+    public void onDetachedFromWindow() {
+        mWrapped.onDetachedFromWindow();
+    }
+
+    @Override
+    public void onPanelClosed(int featureId, Menu menu) {
+        mWrapped.onPanelClosed(featureId, menu);
+    }
+
+    @Override
+    public boolean onSearchRequested() {
+        return mWrapped.onSearchRequested();
+    }
+
+    @Override
+    public ActionMode onWindowStartingActionMode(ActionMode.Callback callback) {
+        return mWrapped.onWindowStartingActionMode(callback);
+    }
+
+    @Override
+    public void onActionModeStarted(ActionMode mode) {
+        mWrapped.onActionModeStarted(mode);
+    }
+
+    @Override
+    public void onActionModeFinished(ActionMode mode) {
+        mWrapped.onActionModeFinished(mode);
+    }
+}
+