Audio Routing support in UI

Changes:
- AudioModeProvider - receives audio mode changes from
  CallHandlerService
- CallButtonPresenter listens to AudioModeProvider so that it can use
  those changes in the UI.
- CallButtonFragment uses the audio mode from Presenter() to display:
   - The correct layers for the supported modes
   - The popup menu when bluetooth is enabled

Change-Id: I8ec4024f7bbb5e3b1cfdaae20a4dd2f85ae802cf

1 files changed, 7 insertions, 0 deletions

diff --git a/InCallUI/src/com/android/incallui/Presenter.java b/InCallUI/src/com/android/incallui/Presenter.java
index d4024d53f..b4962aea6 100644
--- a/InCallUI/src/com/android/incallui/Presenter.java
+++ b/InCallUI/src/com/android/incallui/Presenter.java
@@ -32,6 +32,13 @@ public abstract class Presenter<U extends Ui> {
         mUi = ui;
     }
 
+    /**
+     * Called when the UI view is destroyed in Fragment.onDestroyView().
+     */
+    public void onUiUnready(U ui) {
+        mUi = null;
+    }
+
     public U getUi() {
         return mUi;
     }