Merge "DO NOT MERGE Notify keyguard of when power button is pressed." into cw-f-dev

core/java/com/android/internal/policy/IKeyguardService.aidl

@@ -98,4 +98,10 @@ oneway interface IKeyguardService {
      * to start the keyguard dismiss sequence.
      */
     void onActivityDrawn();
+
+    /**
+     * Notifies the Keyguard that the power key was pressed while locked and launched Home rather
+     * than putting the device to sleep or waking up.
+     */
+    void onShortPowerPressedGoHome();
 }

packages/SystemUI/src/com/android/systemui/keyguard/KeyguardService.java

@@ -202,6 +202,12 @@ public class KeyguardService extends Service {
             checkPermission();
             mKeyguardViewMediator.onActivityDrawn();
         }
+
+        @Override
+        public void onShortPowerPressedGoHome() {
+            checkPermission();
+            mKeyguardViewMediator.onShortPowerPressedGoHome();
+        }
     };
 }
 

packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java

@@ -1943,6 +1943,10 @@ public class KeyguardViewMediator extends SystemUI {
         mHandler.sendEmptyMessage(ON_ACTIVITY_DRAWN);
     }
 
+    public void onShortPowerPressedGoHome() {
+        // do nothing
+    }
+
     public ViewMediatorCallback getViewMediatorCallback() {
         return mViewMediatorCallback;
     }

services/core/java/com/android/server/policy/PhoneWindowManager.java

@@ -1301,20 +1301,28 @@ public class PhoneWindowManager implements WindowManagerPolicy {
                     launchHomeFromHotKey();
                     break;
                 case SHORT_PRESS_POWER_GO_HOME:
-                    launchHomeFromHotKey(true /* awakenFromDreams */, false /*respectKeyguard*/);
+                    shortPressPowerGoHome();
                     break;
                 case SHORT_PRESS_POWER_CLOSE_IME_OR_GO_HOME:
                     if (mWindowManagerFuncs.isInputMethodWindowVisible()) {
                         mWindowManagerFuncs.hideCurrentInputMethod();
                     } else {
-                        launchHomeFromHotKey(true /* awakenFromDreams */,
-                            false /*respectKeyguard*/);
+                        shortPressPowerGoHome();
                     }
                     break;
             }
         }
     }
 
+    private void shortPressPowerGoHome() {
+        launchHomeFromHotKey(true /* awakenFromDreams */, false /*respectKeyguard*/);
+        if (isKeyguardShowingAndNotOccluded()) {
+            // Notify keyguard so it can do any special handling for the power button since the
+            // device will not power off and only launch home.
+            mKeyguardDelegate.onShortPowerPressedGoHome();
+        }
+    }
+
     private void powerMultiPressAction(long eventTime, boolean interactive, int behavior) {
         switch (behavior) {
             case MULTI_PRESS_POWER_NOTHING:

services/core/java/com/android/server/policy/keyguard/KeyguardServiceDelegate.java

@@ -427,6 +427,12 @@ public class KeyguardServiceDelegate {
         }
     }
 
+    public void onShortPowerPressedGoHome() {
+        if (mKeyguardService != null) {
+            mKeyguardService.onShortPowerPressedGoHome();
+        }
+    }
+
     public void dump(String prefix, PrintWriter pw) {
         pw.println(prefix + TAG);
         prefix += "  ";

services/core/java/com/android/server/policy/keyguard/KeyguardServiceWrapper.java

@@ -228,6 +228,15 @@ public class KeyguardServiceWrapper implements IKeyguardService {
         }
     }
 
+    @Override
+    public void onShortPowerPressedGoHome() {
+        try {
+            mService.onShortPowerPressedGoHome();
+        } catch (RemoteException e) {
+            Slog.w(TAG , "Remote Exception", e);
+        }
+    }
+
     @Override // Binder interface
     public IBinder asBinder() {
         return mService.asBinder();