Fix OnCancelListener for Dialogs on swipe to dismiss.

am: 67639a5f67

Change-Id: I92bc472b3519020eeadf61b1e8047aee9e8bd96c

core/java/android/app/Dialog.java

@@ -185,6 +185,11 @@ public class Dialog implements DialogInterface, Window.Callback,
         mWindow = w;
         w.setCallback(this);
         w.setOnWindowDismissedCallback(this);
+        w.setOnWindowSwipeDismissedCallback(() -> {
+            if (mCancelable) {
+                cancel();
+            }
+        });
         w.setWindowManager(mWindowManager, null, null);
         w.setGravity(Gravity.CENTER);
 

core/java/android/view/Window.java

@@ -275,6 +275,7 @@ public abstract class Window {
     private TypedArray mWindowStyle;
     private Callback mCallback;
     private OnWindowDismissedCallback mOnWindowDismissedCallback;
+    private OnWindowSwipeDismissedCallback mOnWindowSwipeDismissedCallback;
     private WindowControllerCallback mWindowControllerCallback;
     private OnRestrictedCaptionAreaChangedListener mOnRestrictedCaptionAreaChangedListener;
     private Rect mRestrictedCaptionAreaRect;
@@ -587,6 +588,18 @@ public abstract class Window {
         void onWindowDismissed(boolean finishTask, boolean suppressWindowTransition);
     }
 
+    /** @hide */
+    public interface OnWindowSwipeDismissedCallback {
+        /**
+         * Called when a window is swipe dismissed. This informs the callback that the
+         * window is gone, and it should finish itself.
+         * @param finishTask True if the task should also be finished.
+         * @param suppressWindowTransition True if the resulting exit and enter window transition
+         * animations should be suppressed.
+         */
+        void onWindowSwipeDismissed();
+    }
+
     /** @hide */
     public interface WindowControllerCallback {
         /**
@@ -880,6 +893,18 @@ public abstract class Window {
         }
     }
 
+    /** @hide */
+    public final void setOnWindowSwipeDismissedCallback(OnWindowSwipeDismissedCallback sdcb) {
+        mOnWindowSwipeDismissedCallback = sdcb;
+    }
+
+    /** @hide */
+    public final void dispatchOnWindowSwipeDismissed() {
+        if (mOnWindowSwipeDismissedCallback != null) {
+            mOnWindowSwipeDismissedCallback.onWindowSwipeDismissed();
+        }
+    }
+
     /** @hide */
     public final void setWindowControllerCallback(WindowControllerCallback wccb) {
         mWindowControllerCallback = wccb;

core/java/com/android/internal/policy/PhoneWindow.java

@@ -2990,6 +2990,7 @@ public class PhoneWindow extends Window implements MenuBuilder.Callback {
         swipeDismiss.setOnDismissedListener(new SwipeDismissLayout.OnDismissedListener() {
             @Override
             public void onDismissed(SwipeDismissLayout layout) {
+                dispatchOnWindowSwipeDismissed();
                 dispatchOnWindowDismissed(false /*finishTask*/, true /*suppressWindowTransition*/);
             }
         });