Make chart time slot not clickable when accessibility servie is enabled

after discuss with Shuan & Peggy, we will make the chat view is not
clickable since accessibility service is enabled for talkback, switch
access and voice access, since some gestures are conflict with our
design (double click to show all contents is conflict with a11y behavior)


Bug: 187814675
Test: make SettingsRoboTests
Change-Id: I00929a5ec28f83d6aee6e8c9278d61e6cf26428d
diff --git a/src/com/android/settings/fuelgauge/BatteryChartView.java b/src/com/android/settings/fuelgauge/BatteryChartView.java
index cd76d0e..1048017 100644
--- a/src/com/android/settings/fuelgauge/BatteryChartView.java
+++ b/src/com/android/settings/fuelgauge/BatteryChartView.java
@@ -15,6 +15,7 @@
 
 import static java.lang.Math.round;
 
+import android.accessibilityservice.AccessibilityServiceInfo;
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Canvas;
@@ -28,23 +29,30 @@
 import android.view.HapticFeedbackConstants;
 import android.view.MotionEvent;
 import android.view.View;
+import android.view.accessibility.AccessibilityManager;
 import android.widget.TextView;
 
 import androidx.appcompat.widget.AppCompatImageView;
+import androidx.annotation.VisibleForTesting;
 
 import com.android.settings.R;
 import com.android.settings.overlay.FeatureFactory;
 import com.android.settingslib.Utils;
 
+import java.util.Arrays;
+import java.util.List;
 import java.util.Locale;
 
 /** A widget component to draw chart graph. */
 public class BatteryChartView extends AppCompatImageView implements View.OnClickListener {
     private static final String TAG = "BatteryChartView";
+    private static final List<String> ACCESSIBILITY_SERVICE_NAMES =
+        Arrays.asList("SwitchAccessService", "TalkBackService", "JustSpeakService");
     // For drawing the percentage information.
     private static final String[] PERCENTAGES = new String[] {"100%", "50%", "0%"};
     private static final int DEFAULT_TRAPEZOID_COUNT = 12;
     private static final int DEFAULT_TIMESTAMP_COUNT = 4;
+
     /** Selects all trapezoid shapes. */
     public static final int SELECTED_INDEX_ALL = -1;
     public static final int SELECTED_INDEX_INVALID = -2;
@@ -57,10 +65,11 @@
     private int mDividerWidth;
     private int mDividerHeight;
     private int mTrapezoidCount;
-    private int mSelectedIndex;
     private float mTrapezoidVOffset;
     private float mTrapezoidHOffset;
-    private boolean mIsSlotsClickable;
+    private boolean mIsSlotsClickabled;
+
+    @VisibleForTesting int mSelectedIndex;
 
     // Colors for drawing the trapezoid shape and dividers.
     private int mTrapezoidColor;
@@ -247,26 +256,37 @@
     @Override
     public void onAttachedToWindow() {
         super.onAttachedToWindow();
+        updateClickableState();
+    }
+
+    private void updateClickableState() {
         final Context context = mContext;
-        mIsSlotsClickable =
+        mIsSlotsClickabled =
             FeatureFactory.getFactory(context)
-                .getPowerUsageFeatureProvider(context)
-                .isChartGraphSlotsEnabled(context);
-        Log.d(TAG, "isChartGraphSlotsEnabled:" + mIsSlotsClickable);
+                    .getPowerUsageFeatureProvider(context)
+                    .isChartGraphSlotsEnabled(context)
+            && !isAccessibilityEnabled(context);
+        Log.d(TAG, "isChartGraphSlotsEnabled:" + mIsSlotsClickabled);
         setClickable(isClickable());
         // Initializes the trapezoid curve paint for non-clickable case.
-        if (!mIsSlotsClickable && mTrapezoidCurvePaint == null) {
+        if (!mIsSlotsClickabled && mTrapezoidCurvePaint == null) {
             mTrapezoidCurvePaint = new Paint();
             mTrapezoidCurvePaint.setAntiAlias(true);
             mTrapezoidCurvePaint.setColor(mTrapezoidSolidColor);
             mTrapezoidCurvePaint.setStyle(Paint.Style.STROKE);
             mTrapezoidCurvePaint.setStrokeWidth(mDividerWidth * 2);
         }
+        invalidate();
     }
 
     @Override
     public void setClickable(boolean clickable) {
-        super.setClickable(mIsSlotsClickable && clickable);
+        super.setClickable(mIsSlotsClickabled && clickable);
+    }
+
+    @VisibleForTesting
+    void setClickableForce(boolean clickable) {
+        super.setClickable(clickable);
     }
 
     private void initializeColors(Context context) {
@@ -412,7 +432,7 @@
             }
             // Configures the trapezoid paint color.
             final int trapezoidColor =
-                !mIsSlotsClickable
+                !mIsSlotsClickabled
                     ? mTrapezoidColor
                     : mSelectedIndex == index || mSelectedIndex == SELECTED_INDEX_ALL
                         ? mTrapezoidSolidColor : mTrapezoidColor;
@@ -469,6 +489,29 @@
                 && mLevels[trapezoidIndex + 1] != 0;
     }
 
+    @VisibleForTesting
+    static boolean isAccessibilityEnabled(Context context) {
+        final AccessibilityManager accessibilityManager =
+            context.getSystemService(AccessibilityManager.class);
+        if (!accessibilityManager.isEnabled()) {
+            return false;
+        }
+        final List<AccessibilityServiceInfo> serviceInfoList =
+            accessibilityManager.getEnabledAccessibilityServiceList(
+                AccessibilityServiceInfo.FEEDBACK_SPOKEN
+                    | AccessibilityServiceInfo.FEEDBACK_GENERIC);
+        for (AccessibilityServiceInfo info : serviceInfoList) {
+            for (String serviceName : ACCESSIBILITY_SERVICE_NAMES) {
+                final String serviceId = info.getId();
+                if (serviceId != null && serviceId.contains(serviceName)) {
+                    Log.d(TAG, "acccessibilityEnabled:" + serviceId);
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
     // A container class for each trapezoid left and right location.
     private static final class TrapezoidSlot {
         public float mLeft;
diff --git a/tests/robotests/src/com/android/settings/fuelgauge/BatteryChartViewTest.java b/tests/robotests/src/com/android/settings/fuelgauge/BatteryChartViewTest.java
new file mode 100644
index 0000000..877ebc2
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/fuelgauge/BatteryChartViewTest.java
@@ -0,0 +1,170 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ *
+ */
+package com.android.settings.fuelgauge;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.accessibilityservice.AccessibilityServiceInfo;
+import android.content.Context;
+import android.view.accessibility.AccessibilityManager;
+
+import com.android.settings.testutils.FakeFeatureFactory;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+import java.util.Arrays;
+import java.util.ArrayList;
+
+@RunWith(RobolectricTestRunner.class)
+public final class BatteryChartViewTest {
+
+    private Context mContext;
+    private BatteryChartView mBatteryChartView;
+    private FakeFeatureFactory mFeatureFactory;
+    private PowerUsageFeatureProvider mPowerUsageFeatureProvider;
+
+    @Mock private AccessibilityServiceInfo mockAccessibilityServiceInfo;
+    @Mock private AccessibilityManager mockAccessibilityManager;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mFeatureFactory = FakeFeatureFactory.setupForTest();
+        mPowerUsageFeatureProvider = mFeatureFactory.powerUsageFeatureProvider;
+        mContext = spy(RuntimeEnvironment.application);
+        mBatteryChartView = new BatteryChartView(mContext);
+        doReturn(mockAccessibilityManager).when(mContext)
+            .getSystemService(AccessibilityManager.class);
+        doReturn("TalkBackService").when(mockAccessibilityServiceInfo).getId();
+        doReturn(Arrays.asList(mockAccessibilityServiceInfo))
+            .when(mockAccessibilityManager)
+            .getEnabledAccessibilityServiceList(anyInt());
+    }
+
+    @Test
+    public void testIsAccessibilityEnabled_disable_returnFalse() {
+        doReturn(false).when(mockAccessibilityManager).isEnabled();
+        assertThat(BatteryChartView.isAccessibilityEnabled(mContext)).isFalse();
+    }
+
+    @Test
+    public void testIsAccessibilityEnabled_emptyInfo_returnFalse() {
+        doReturn(true).when(mockAccessibilityManager).isEnabled();
+        doReturn(new ArrayList<AccessibilityServiceInfo>())
+            .when(mockAccessibilityManager)
+            .getEnabledAccessibilityServiceList(anyInt());
+
+        assertThat(BatteryChartView.isAccessibilityEnabled(mContext)).isFalse();
+    }
+
+    @Test
+    public void testIsAccessibilityEnabled_validServiceId_returnTrue() {
+        doReturn(true).when(mockAccessibilityManager).isEnabled();
+        assertThat(BatteryChartView.isAccessibilityEnabled(mContext)).isTrue();
+    }
+
+    @Test
+    public void testSetSelectedIndex_invokesCallback() {
+        final int selectedIndex[] = new int[1];
+        final int expectedIndex = 2;
+        mBatteryChartView.mSelectedIndex = 1;
+        mBatteryChartView.setOnSelectListener(
+            trapezoidIndex -> {
+                selectedIndex[0] = trapezoidIndex;
+            });
+
+        mBatteryChartView.setSelectedIndex(expectedIndex);
+
+        assertThat(mBatteryChartView.mSelectedIndex)
+            .isEqualTo(expectedIndex);
+        assertThat(selectedIndex[0]).isEqualTo(expectedIndex);
+    }
+
+    @Test
+    public void testSetSelectedIndex_sameIndex_notInvokesCallback() {
+        final int selectedIndex[] = new int[1];
+        final int expectedIndex = 1;
+        mBatteryChartView.mSelectedIndex = expectedIndex;
+        mBatteryChartView.setOnSelectListener(
+            trapezoidIndex -> {
+                selectedIndex[0] = trapezoidIndex;
+            });
+
+        mBatteryChartView.setSelectedIndex(expectedIndex);
+
+        assertThat(selectedIndex[0]).isNotEqualTo(expectedIndex);
+    }
+
+    @Test
+    public void testClickable_isChartGraphSlotsEnabledIsFalse_notClickable() {
+        mBatteryChartView.setClickableForce(true);
+        when(mPowerUsageFeatureProvider.isChartGraphSlotsEnabled(mContext))
+            .thenReturn(false);
+
+        mBatteryChartView.onAttachedToWindow();
+        assertThat(mBatteryChartView.isClickable()).isFalse();
+    }
+
+    @Test
+    public void testClickable_accessibilityIsDisabled_clickable() {
+        mBatteryChartView.setClickableForce(true);
+        when(mPowerUsageFeatureProvider.isChartGraphSlotsEnabled(mContext))
+            .thenReturn(true);
+        doReturn(false).when(mockAccessibilityManager).isEnabled();
+
+        mBatteryChartView.onAttachedToWindow();
+        assertThat(mBatteryChartView.isClickable()).isTrue();
+    }
+
+    @Test
+    public void testClickable_accessibilityIsEnabledWithoutValidId_clickable() {
+        mBatteryChartView.setClickableForce(true);
+        when(mPowerUsageFeatureProvider.isChartGraphSlotsEnabled(mContext))
+            .thenReturn(true);
+        doReturn(true).when(mockAccessibilityManager).isEnabled();
+        doReturn(new ArrayList<AccessibilityServiceInfo>())
+            .when(mockAccessibilityManager)
+            .getEnabledAccessibilityServiceList(anyInt());
+
+        mBatteryChartView.onAttachedToWindow();
+        assertThat(mBatteryChartView.isClickable()).isTrue();
+    }
+
+    @Test
+    public void testClickable_accessibilityIsEnabledWithValidId_notClickable() {
+        mBatteryChartView.setClickableForce(true);
+        when(mPowerUsageFeatureProvider.isChartGraphSlotsEnabled(mContext))
+            .thenReturn(true);
+        doReturn(true).when(mockAccessibilityManager).isEnabled();
+
+        mBatteryChartView.onAttachedToWindow();
+        assertThat(mBatteryChartView.isClickable()).isFalse();
+    }
+}