base: Long press power button to toggle flashlight [1/2]

 * Thanks to beanstown106 for the initial longpress action calls in
   PhoneWindowManager (improved by lineage guys)

 * Remove the settings pref if the device doesn't have flashlight

 * Vibrate when toggling torch to let the user know of unwanted toggling
   in the pocket (even if vibration is disabled by user)

 * Allow torch action also on ambient display

[AEX Edits] :
- Port to S
- simplify code

[mydongistiny]:
- Fixed for android10

[DennySPB] :
- base: ScreenOff torch: Allow to disable torch when screen is on

[mickaelmendes50] :
- Adapt to AOSPA

 * We don't allow users to use the Double Press power option,
   so remove the non used code.
 * Removed "double press power to toggle torch"
 * Removed "handle camera gesture here instead of extensions"
 * Removed "Add 170ms delay for double tap action"

Change-Id: I12da044f86c7b625872607529cf8524615cf576b

7 files changed, 106 insertions, 11 deletions

diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index 09583e31067f..28f43b7c69ca 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -5203,6 +5203,16 @@ public final class Settings {
         public static final String VOLBTN_MUSIC_CONTROLS = "volbtn_music_controls";
 
         /**
+         * Whether the torch launch gesture to double tap or long press the power button when the
+         * screen is off should be enabled. *
+         * 0: disabled
+         * 1: double tap power for torch
+         * 2: long tap power for torch
+         * @hide
+         */
+        public static final String TORCH_POWER_BUTTON_GESTURE = "torch_power_button_gesture";
+
+        /**
          * Keys we no longer back up under the current schema, but want to continue to
          * process when restoring historical backup datasets.
          *
diff --git a/core/java/com/android/internal/statusbar/IStatusBar.aidl b/core/java/com/android/internal/statusbar/IStatusBar.aidl
index ed6415d749a3..5b000c102d46 100644
--- a/core/java/com/android/internal/statusbar/IStatusBar.aidl
+++ b/core/java/com/android/internal/statusbar/IStatusBar.aidl
@@ -284,4 +284,9 @@ oneway interface IStatusBar
      * Triggers a GC in the system and status bar.
      */
     void runGcForTest();
+
+    /**
+     * Toggles flashlight of the device
+     */
+    void toggleCameraFlash();
 }
diff --git a/core/java/com/android/internal/statusbar/IStatusBarService.aidl b/core/java/com/android/internal/statusbar/IStatusBarService.aidl
index fd28d1be8106..44c530972409 100644
--- a/core/java/com/android/internal/statusbar/IStatusBarService.aidl
+++ b/core/java/com/android/internal/statusbar/IStatusBarService.aidl
@@ -162,4 +162,9 @@ interface IStatusBarService
      * Starts the default assistant app.
      */
     void startAssist(in Bundle args);
+
+    /**
+     * Toggles flashlight of the device
+     */
+    void toggleCameraFlash();
 }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/CommandQueue.java b/packages/SystemUI/src/com/android/systemui/statusbar/CommandQueue.java
index 50911d162113..2dd4272abc95 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/CommandQueue.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/CommandQueue.java
@@ -147,6 +147,7 @@ public class CommandQueue extends IStatusBar.Stub implements CallbackController<
     private static final int MSG_EMERGENCY_ACTION_LAUNCH_GESTURE      = 58 << MSG_SHIFT;
     private static final int MSG_SET_NAVIGATION_BAR_LUMA_SAMPLING_ENABLED = 59 << MSG_SHIFT;
     private static final int MSG_SET_UDFPS_HBM_LISTENER = 60 << MSG_SHIFT;
+    private static final int MSG_TOGGLE_CAMERA_FLASH = 61 << MSG_SHIFT;
 
     public static final int FLAG_EXCLUDE_NONE = 0;
     public static final int FLAG_EXCLUDE_SEARCH_PANEL = 1 << 0;
@@ -400,6 +401,8 @@ public class CommandQueue extends IStatusBar.Stub implements CallbackController<
          * @see IStatusBar#setNavigationBarLumaSamplingEnabled(int, boolean)
          */
         default void setNavigationBarLumaSamplingEnabled(int displayId, boolean enable) {}
+
+        default void toggleCameraFlash() {}
     }
 
     public CommandQueue(Context context) {
@@ -1104,6 +1107,14 @@ public class CommandQueue extends IStatusBar.Stub implements CallbackController<
         GcUtils.runGcAndFinalizersSync();
     }
 
+    @Override
+    public void toggleCameraFlash() {
+        synchronized (mLock) {
+            mHandler.removeMessages(MSG_TOGGLE_CAMERA_FLASH);
+            mHandler.sendEmptyMessage(MSG_TOGGLE_CAMERA_FLASH);
+        }
+    }
+
     private final class H extends Handler {
         private H(Looper l) {
             super(l);
@@ -1477,6 +1488,11 @@ public class CommandQueue extends IStatusBar.Stub implements CallbackController<
                                 msg.arg2 != 0);
                     }
                     break;
+                case MSG_TOGGLE_CAMERA_FLASH:
+                    for (int i = 0; i < mCallbacks.size(); i++) {
+                        mCallbacks.get(i).toggleCameraFlash();
+                    }
+                    break;
             }
         }
     }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
index 133b00164337..37e5837f80dc 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
@@ -140,6 +140,7 @@ import com.android.keyguard.ViewMediatorCallback;
 import com.android.systemui.ActivityIntentHelper;
 import com.android.systemui.AutoReinflateContainer;
 import com.android.systemui.DejankUtils;
+import com.android.systemui.Dependency;
 import com.android.systemui.Dumpable;
 import com.android.systemui.EventLogTags;
 import com.android.systemui.InitController;
@@ -238,6 +239,7 @@ import com.android.systemui.statusbar.policy.ConfigurationController.Configurati
 import com.android.systemui.statusbar.policy.DeviceProvisionedController;
 import com.android.systemui.statusbar.policy.DeviceProvisionedController.DeviceProvisionedListener;
 import com.android.systemui.statusbar.policy.ExtensionController;
+import com.android.systemui.statusbar.policy.FlashlightController;
 import com.android.systemui.statusbar.policy.KeyguardStateController;
 import com.android.systemui.statusbar.policy.NetworkController;
 import com.android.systemui.statusbar.policy.OnHeadsUpChangedListener;
@@ -650,6 +652,7 @@ public class StatusBar extends SystemUI implements DemoMode,
         }
     };
 
+    private FlashlightController mFlashlightController;
     private final UserSwitcherController mUserSwitcherController;
     private final NetworkController mNetworkController;
     private final LifecycleRegistry mLifecycle = new LifecycleRegistry(this);
@@ -1380,6 +1383,8 @@ public class StatusBar extends SystemUI implements DemoMode,
 
         // Private API call to make the shadows look better for Recents
         ThreadedRenderer.overrideProperty("ambientRatio", String.valueOf(1.5f));
+
+        mFlashlightController = Dependency.get(FlashlightController.class);
     }
 
 
@@ -2281,6 +2286,16 @@ public class StatusBar extends SystemUI implements DemoMode,
         }
     }
 
+    @Override
+    public void toggleCameraFlash() {
+        if (DEBUG) {
+            Log.d(TAG, "Toggling camera flashlight");
+        }
+        if (mFlashlightController.isAvailable()) {
+            mFlashlightController.setFlashlight(!mFlashlightController.isEnabled());
+        }
+    }
+
     void makeExpandedVisible(boolean force) {
         if (SPEW) Log.d(TAG, "Make expanded visible: expanded visible=" + mExpandedVisible);
         if (!force && (mExpandedVisible || !mCommandQueue.panelsEnabled())) {
@@ -2819,6 +2834,10 @@ public class StatusBar extends SystemUI implements DemoMode,
         pw.println("   Secure camera: " + CameraIntents.getSecureCameraIntent(mContext));
         pw.println("   Override package: "
                 + String.valueOf(CameraIntents.getOverrideCameraPackage(mContext)));
+
+        if (mFlashlightController != null) {
+            mFlashlightController.dump(fd, pw, args);
+        }
     }
 
     public static void dumpBarTransitions(
diff --git a/services/core/java/com/android/server/policy/PhoneWindowManager.java b/services/core/java/com/android/server/policy/PhoneWindowManager.java
index 871610360e81..d6ecab0f5d6a 100644
--- a/services/core/java/com/android/server/policy/PhoneWindowManager.java
+++ b/services/core/java/com/android/server/policy/PhoneWindowManager.java
@@ -613,6 +613,8 @@ public class PhoneWindowManager implements WindowManagerPolicy {
 
     private final List<DeviceKeyHandler> mDeviceKeyHandlers = new ArrayList<>();
 
+    private int mTorchActionMode;
+
     private static final int MSG_DISPATCH_MEDIA_KEY_WITH_WAKE_LOCK = 3;
     private static final int MSG_DISPATCH_MEDIA_KEY_REPEAT_WITH_WAKE_LOCK = 4;
     private static final int MSG_KEYGUARD_DRAWN_COMPLETE = 5;
@@ -783,6 +785,9 @@ public class PhoneWindowManager implements WindowManagerPolicy {
             resolver.registerContentObserver(Settings.System.getUriFor(
                     Settings.System.VOLBTN_MUSIC_CONTROLS), false, this,
                     UserHandle.USER_ALL);
+            resolver.registerContentObserver(Settings.System.getUriFor(
+                    Settings.System.TORCH_POWER_BUTTON_GESTURE), false, this,
+                    UserHandle.USER_ALL);
             updateSettings();
         }
 
@@ -927,7 +932,9 @@ public class PhoneWindowManager implements WindowManagerPolicy {
                 || handledByPowerManager || mKeyCombinationManager.isPowerKeyIntercepted();
         if (!mPowerKeyHandled) {
             if (!interactive) {
-                wakeUpFromPowerKey(event.getDownTime());
+                if (mTorchActionMode == 0) {
+                    wakeUpFromPowerKey(event.getDownTime());
+                }
             }
         } else {
             // handled by another power key policy.
@@ -963,12 +970,6 @@ public class PhoneWindowManager implements WindowManagerPolicy {
     }
 
     private void powerPress(long eventTime, int count, boolean beganFromNonInteractive) {
-        if (mDefaultDisplayPolicy.isScreenOnEarly() && !mDefaultDisplayPolicy.isScreenOnFully()) {
-            Slog.i(TAG, "Suppressed redundant power key press while "
-                    + "already in the process of turning the screen on.");
-            return;
-        }
-
         final boolean interactive = Display.isOnState(mDefaultDisplay.getState());
 
         Slog.d(TAG, "powerPress: eventTime=" + eventTime + " interactive=" + interactive
@@ -1020,6 +1021,8 @@ public class PhoneWindowManager implements WindowManagerPolicy {
                     break;
                 }
             }
+        } else if (mTorchActionMode != 0 && beganFromNonInteractive) {
+            wakeUpFromPowerKey(eventTime);
         }
     }
 
@@ -2047,10 +2050,17 @@ public class PhoneWindowManager implements WindowManagerPolicy {
 
         @Override
         void onLongPress(long eventTime) {
-            if (mSingleKeyGestureDetector.beganFromNonInteractive()
-                    && !mSupportLongPressPowerWhenNonInteractive) {
-                Slog.v(TAG, "Not support long press power when device is not interactive.");
-                return;
+            if (mSingleKeyGestureDetector.beganFromNonInteractive() || isFlashLightIsOn()) {
+                if (mTorchActionMode != 0) {
+                    performHapticFeedback(HapticFeedbackConstants.LONG_PRESS, false,
+                            "Power - Long Press - Torch");
+                    toggleCameraFlash();
+                    return;
+                }
+                if (!mSupportLongPressPowerWhenNonInteractive) {
+                    Slog.v(TAG, "Not support long press power when device is not interactive.");
+                    return;
+                }
             }
 
             powerLongPress(eventTime);
@@ -2068,6 +2078,22 @@ public class PhoneWindowManager implements WindowManagerPolicy {
         }
     }
 
+    private boolean isFlashLightIsOn() {
+        return Settings.Secure.getInt(mContext.getContentResolver(),
+                Settings.Secure.FLASHLIGHT_ENABLED, 0) != 0;
+    }
+
+    public void toggleCameraFlash() {
+        IStatusBarService service = getStatusBarService();
+        if (service != null) {
+            try {
+                service.toggleCameraFlash();
+            } catch (RemoteException e) {
+                Log.e(TAG, "Unable to toggle camera flash:", e);
+            }
+        }
+    }
+
     /**
      * Rule for single back key gesture.
      */
@@ -2207,6 +2233,9 @@ public class PhoneWindowManager implements WindowManagerPolicy {
             mVolBtnMusicControls = Settings.System.getIntForUser(resolver,
                     Settings.System.VOLBTN_MUSIC_CONTROLS, 0,
                     UserHandle.USER_CURRENT) == 1;
+            mTorchActionMode = Settings.System.getIntForUser(resolver,
+                    Settings.System.TORCH_POWER_BUTTON_GESTURE, 0,
+                    UserHandle.USER_CURRENT);
         }
         if (updateRotation) {
             updateRotation(true);
diff --git a/services/core/java/com/android/server/statusbar/StatusBarManagerService.java b/services/core/java/com/android/server/statusbar/StatusBarManagerService.java
index 2d075168664c..4b25161d9a9f 100644
--- a/services/core/java/com/android/server/statusbar/StatusBarManagerService.java
+++ b/services/core/java/com/android/server/statusbar/StatusBarManagerService.java
@@ -878,6 +878,17 @@ public class StatusBarManagerService extends IStatusBarService.Stub implements D
         return mTracingEnabled;
     }
 
+    @Override
+    public void toggleCameraFlash() {
+        if (mBar != null) {
+            try {
+                mBar.toggleCameraFlash();
+            } catch (RemoteException ex) {
+                Slog.e(TAG, "Unable to toggle camera flash:", ex);
+            }
+        }
+    }
+
     // TODO(b/117478341): make it aware of multi-display if needed.
     @Override
     public void disable(int what, IBinder token, String pkg) {