Add swipe-to-dismiss support to PhoneWindow.

This adds a new window feature -- FEATURE_SWIPE_TO_DISMISS -- and a
theme attribute to activate that feature. When the feature is
activated, a SwipeDismissLayout is inflated as the DecorView layout.
SwipeDismissLayout intercepts touch events and steals ones that are
large swipes to the right if its children don't. PhoneWindow registers
handlers that listen for these swipe events, translate the window when
necessary, and finish the activity at the end of the gesture.

Change-Id: I512e758f3c3ffd3b353dba3b911c0e80a88d6f5f

1 files changed, 12 insertions, 1 deletions

diff --git a/core/java/android/view/Window.java b/core/java/android/view/Window.java
index b3a0699..c450f3c 100644
--- a/core/java/android/view/Window.java
+++ b/core/java/android/view/Window.java
@@ -91,10 +91,15 @@ public abstract class Window {
     public static final int FEATURE_ACTION_MODE_OVERLAY = 10;
 
     /**
+     * Flag for requesting a decoration-free window that is dismissed by swiping from the left.
+     */
+    public static final int FEATURE_SWIPE_TO_DISMISS = 11;
+
+    /**
      * Max value used as a feature ID
      * @hide
      */
-    public static final int FEATURE_MAX = FEATURE_ACTION_MODE_OVERLAY;
+    public static final int FEATURE_MAX = FEATURE_SWIPE_TO_DISMISS;
 
     /** Flag for setting the progress bar's visibility to VISIBLE */
     public static final int PROGRESS_VISIBILITY_ON = -1;
@@ -385,6 +390,12 @@ public abstract class Window {
          * @param mode The mode that was just finished.
          */
         public void onActionModeFinished(ActionMode mode);
+
+        /**
+         * Called when a window is dismissed. This informs the callback that the
+         * window is gone, and it should finish itself.
+         */
+        public void onWindowDismissed();
     }
 
     public Window(Context context) {