From f18b2894e4a4cd1f27ec1026bd13fc84c6a4b15c Mon Sep 17 00:00:00 2001
From: Beverly <beverlyt@google.com>
Date: Fri, 14 May 2021 16:03:46 -0400
Subject: Consider the clock detached if the keyguard isn't visible

Update AnimatableClockController's definition of attached to include
whether the keyguard is visible or not. This way, we won't animate
if the view isn't actually visible & we'll reset the clock state when
the keyguard is newly visible.

Only create a new AnimatableClockController onInit instead of
in the onAttach method for KeyguardClockSwitchController.

Fixes: 188203771
Test: manual
Change-Id: Id02132dba8b5392046cb46766aa64fd58e04a4ad
---
 .../keyguard/AnimatableClockController.java        | 83 ++++++++++++++++------
 1 file changed, 60 insertions(+), 23 deletions(-)

(limited to 'packages/SystemUI/src/com/android/keyguard/AnimatableClockController.java')

diff --git a/packages/SystemUI/src/com/android/keyguard/AnimatableClockController.java b/packages/SystemUI/src/com/android/keyguard/AnimatableClockController.java
index 4b9bf8c27f8a..e6ec04b4e391 100644
--- a/packages/SystemUI/src/com/android/keyguard/AnimatableClockController.java
+++ b/packages/SystemUI/src/com/android/keyguard/AnimatableClockController.java
@@ -37,7 +37,8 @@ import java.util.Objects;
 import java.util.TimeZone;
 
 /**
- * Controller for an AnimatableClockView. Instantiated by {@link KeyguardClockSwitchController}.
+ * Controller for an AnimatableClockView on the keyguard. Instantiated by
+ * {@link KeyguardClockSwitchController}.
  */
 public class AnimatableClockController extends ViewController<AnimatableClockView> {
     private static final int FORMAT_NUMBER = 1234567890;
@@ -46,6 +47,7 @@ public class AnimatableClockController extends ViewController<AnimatableClockVie
     private final BroadcastDispatcher mBroadcastDispatcher;
     private final KeyguardUpdateMonitor mKeyguardUpdateMonitor;
     private final KeyguardBypassController mBypassController;
+    private final BatteryController mBatteryController;
     private final int mDozingColor = Color.WHITE;
     private int mLockScreenColor;
 
@@ -53,6 +55,7 @@ public class AnimatableClockController extends ViewController<AnimatableClockVie
     private boolean mIsCharging;
     private float mDozeAmount;
     private Locale mLocale;
+    private boolean mAttached; // if keyguard isn't showing, mAttached = false
 
     private final NumberFormat mBurmeseNf = NumberFormat.getInstance(Locale.forLanguageTag("my"));
     private final String mBurmeseNumerals;
@@ -73,62 +76,96 @@ public class AnimatableClockController extends ViewController<AnimatableClockVie
         mBroadcastDispatcher = broadcastDispatcher;
         mKeyguardUpdateMonitor = keyguardUpdateMonitor;
         mBypassController = bypassController;
+        mBatteryController = batteryController;
 
         mBurmeseNumerals = mBurmeseNf.format(FORMAT_NUMBER);
         mBurmeseLineSpacing = getContext().getResources().getFloat(
                 R.dimen.keyguard_clock_line_spacing_scale_burmese);
         mDefaultLineSpacing = getContext().getResources().getFloat(
                 R.dimen.keyguard_clock_line_spacing_scale);
+    }
 
-        batteryController.addCallback(new BatteryController.BatteryStateChangeCallback() {
-            @Override
-            public void onBatteryLevelChanged(int level, boolean pluggedIn, boolean charging) {
-                if (!mIsCharging && charging) {
-                    mView.animateCharge(mIsDozing);
-                }
-                mIsCharging = charging;
+    private final BatteryController.BatteryStateChangeCallback mBatteryCallback =
+            new BatteryController.BatteryStateChangeCallback() {
+        @Override
+        public void onBatteryLevelChanged(int level, boolean pluggedIn, boolean charging) {
+            if (!mIsCharging && charging) {
+                mView.animateCharge(mIsDozing);
             }
-        });
-    }
+            mIsCharging = charging;
+        }
+    };
 
-    private BroadcastReceiver mLocaleBroadcastReceiver = new BroadcastReceiver() {
+    private final BroadcastReceiver mLocaleBroadcastReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
             updateLocale();
         }
     };
 
+    private final KeyguardUpdateMonitorCallback mKeyguardPersistentCallback =
+            new KeyguardUpdateMonitorCallback() {
+        @Override
+        public void onKeyguardVisibilityChanged(boolean showing) {
+            // call attached/detached methods on visibility changes. benefits include:
+            //  - no animations when keyguard/clock view aren't visible
+            //  - resets state when keyguard is visible again (ie: font weight)
+            if (showing) {
+                onViewAttached();
+            } else {
+                onViewDetached();
+            }
+        }
+    };
+
+    private final KeyguardUpdateMonitorCallback mKeyguardUpdateMonitorCallback =
+            new KeyguardUpdateMonitorCallback() {
+        @Override
+        public void onBiometricAuthenticated(int userId, BiometricSourceType biometricSourceType,
+                boolean isStrongBiometric) {
+            if (biometricSourceType == BiometricSourceType.FACE
+                    && mBypassController.canBypass()) {
+                mView.animateDisappear();
+            }
+        }
+    };
+
     @Override
     protected void onViewAttached() {
+        if (mAttached) {
+            return;
+        }
+        mAttached = true;
         updateLocale();
         mBroadcastDispatcher.registerReceiver(mLocaleBroadcastReceiver,
                 new IntentFilter(Intent.ACTION_LOCALE_CHANGED));
         mStatusBarStateController.addCallback(mStatusBarStateListener);
         mIsDozing = mStatusBarStateController.isDozing();
         mDozeAmount = mStatusBarStateController.getDozeAmount();
+        mBatteryController.addCallback(mBatteryCallback);
         mKeyguardUpdateMonitor.registerCallback(mKeyguardUpdateMonitorCallback);
 
+        mKeyguardUpdateMonitor.removeCallback(mKeyguardPersistentCallback);
+        mKeyguardUpdateMonitor.registerCallback(mKeyguardPersistentCallback);
+
         refreshTime();
         initColors();
     }
 
-    private final KeyguardUpdateMonitorCallback mKeyguardUpdateMonitorCallback =
-            new KeyguardUpdateMonitorCallback() {
-        @Override
-        public void onBiometricAuthenticated(int userId, BiometricSourceType biometricSourceType,
-                boolean isStrongBiometric) {
-            if (biometricSourceType == BiometricSourceType.FACE
-                    && mBypassController.canBypass()) {
-                mView.animateDisappear();
-            }
-        }
-    };
-
     @Override
     protected void onViewDetached() {
+        if (!mAttached) {
+            return;
+        }
+
+        mAttached = false;
         mBroadcastDispatcher.unregisterReceiver(mLocaleBroadcastReceiver);
         mStatusBarStateController.removeCallback(mStatusBarStateListener);
         mKeyguardUpdateMonitor.removeCallback(mKeyguardUpdateMonitorCallback);
+        mBatteryController.removeCallback(mBatteryCallback);
+        if (!mView.isAttachedToWindow()) {
+            mKeyguardUpdateMonitor.removeCallback(mKeyguardPersistentCallback);
+        }
     }
 
     /** Animate the clock appearance */
-- 
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