Introduce DebugGpuOverdrawPreferenceController

- Create new DebugGpuOverdrawPreferenceController
 - Create controller inside the DashboardFragment
 - Port logic from DevelopmentSettings into the controller

Bug: 34203528
Test: make RunSettingsRoboTests -j40
Change-Id: Ibaa2faa79716a0cc769d15f6fe3b868719c0f8a6

src/com/android/settings/development/DebugGpuOverdrawPreferenceController.java

@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2017 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.development;
+
+import android.content.Context;
+import android.os.SystemProperties;
+import android.support.v7.preference.ListPreference;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+import android.text.TextUtils;
+import android.view.ThreadedRenderer;
+
+import com.android.settings.R;
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settingslib.development.DeveloperOptionsPreferenceController;
+import com.android.settingslib.development.SystemPropPoker;
+
+public class DebugGpuOverdrawPreferenceController extends
+        DeveloperOptionsPreferenceController implements Preference.OnPreferenceChangeListener,
+        PreferenceControllerMixin {
+
+    private static final String DEBUG_HW_OVERDRAW_KEY = "debug_hw_overdraw";
+
+    private final String[] mListValues;
+    private final String[] mListSummaries;
+    private ListPreference mPreference;
+
+    public DebugGpuOverdrawPreferenceController(Context context) {
+        super(context);
+
+        mListValues = context.getResources().getStringArray(R.array.debug_hw_overdraw_values);
+        mListSummaries = context.getResources().getStringArray(R.array.debug_hw_overdraw_entries);
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return DEBUG_HW_OVERDRAW_KEY;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+
+        mPreference = (ListPreference) screen.findPreference(getPreferenceKey());
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        writeDebugHwOverdrawOptions(newValue);
+        updateDebugHwOverdrawOptions();
+        return true;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        updateDebugHwOverdrawOptions();
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchEnabled() {
+        mPreference.setEnabled(true);
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchDisabled() {
+        mPreference.setEnabled(false);
+    }
+
+    private void writeDebugHwOverdrawOptions(Object newValue) {
+        SystemProperties.set(ThreadedRenderer.DEBUG_OVERDRAW_PROPERTY,
+                newValue == null ? "" : newValue.toString());
+        SystemPropPoker.getInstance().poke();
+    }
+
+    private void updateDebugHwOverdrawOptions() {
+        final String value = SystemProperties.get(
+                ThreadedRenderer.DEBUG_OVERDRAW_PROPERTY, "" /* default */);
+
+        int index = 0; // default
+        for (int i = 0; i < mListValues.length; i++) {
+            if (TextUtils.equals(value, mListValues[i])) {
+                index = i;
+                break;
+            }
+        }
+        mPreference.setValue(mListValues[index]);
+        mPreference.setSummary(mListSummaries[index]);
+    }
+}

src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java

@@ -304,7 +304,7 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
         controllers.add(new ForceGpuRenderingPreferenceController(context));
         controllers.add(new GpuViewUpdatesPreferenceController(context));
         controllers.add(new HardwareLayersUpdatesPreferenceController(context));
-        // debug gpu overdraw
+        controllers.add(new DebugGpuOverdrawPreferenceController(context));
         // debug non-rectangular clip operations
         controllers.add(new ForceMSAAPreferenceController(context));
         controllers.add(new HardwareOverlaysPreferenceController(context));

tests/robotests/src/com/android/settings/development/DebugGpuOverdrawPreferenceControllerTest.java

@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2017 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.development;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.os.SystemProperties;
+import android.support.v7.preference.ListPreference;
+import android.support.v7.preference.PreferenceScreen;
+import android.view.ThreadedRenderer;
+
+import com.android.settings.R;
+import com.android.settings.TestConfig;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+import com.android.settings.testutils.shadow.SettingsShadowSystemProperties;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH,
+        sdk = TestConfig.SDK_VERSION,
+        shadows = {SettingsShadowSystemProperties.class})
+public class DebugGpuOverdrawPreferenceControllerTest {
+
+    @Mock
+    private ListPreference mPreference;
+    @Mock
+    private PreferenceScreen mScreen;
+
+    /**
+     * 0: off
+     * 1: Show overdraw areas
+     * 2: Show areas for Deuteranomaly
+     */
+    private String[] mListValues;
+    private String[] mListSummaries;
+    private Context mContext;
+    private DebugGpuOverdrawPreferenceController mController;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mListValues = mContext.getResources().getStringArray(R.array.debug_hw_overdraw_values);
+        mListSummaries = mContext.getResources().getStringArray(
+                R.array.debug_hw_overdraw_entries);
+        mController = new DebugGpuOverdrawPreferenceController(mContext);
+        when(mScreen.findPreference(mController.getPreferenceKey())).thenReturn(mPreference);
+        mController.displayPreference(mScreen);
+    }
+
+    @After
+    public void teardown() {
+        SettingsShadowSystemProperties.clear();
+    }
+
+    @Test
+    public void onPreferenceChange_noValueSet_shouldSetEmptyString() {
+        mController.onPreferenceChange(mPreference, null /* new value */);
+
+        String mode = SystemProperties.get(ThreadedRenderer.DEBUG_OVERDRAW_PROPERTY);
+        assertThat(mode).isEqualTo("");
+    }
+
+    @Test
+    public void onPreferenceChange_option1Selected_shouldSetOption1() {
+        mController.onPreferenceChange(mPreference, mListValues[1]);
+
+        String mode = SystemProperties.get(ThreadedRenderer.DEBUG_OVERDRAW_PROPERTY);
+        assertThat(mode).isEqualTo(mListValues[1]);
+    }
+
+    @Test
+    public void updateState_option1Set_shouldUpdatePreferenceToOption1() {
+        SystemProperties.set(ThreadedRenderer.DEBUG_OVERDRAW_PROPERTY, mListValues[1]);
+
+        mController.updateState(mPreference);
+
+        verify(mPreference).setValue(mListValues[1]);
+        verify(mPreference).setSummary(mListSummaries[1]);
+    }
+
+    @Test
+    public void updateState_option2Set_shouldUpdatePreferenceToOption2() {
+        SystemProperties.set(ThreadedRenderer.DEBUG_OVERDRAW_PROPERTY, mListValues[2]);
+
+        mController.updateState(mPreference);
+
+        verify(mPreference).setValue(mListValues[2]);
+        verify(mPreference).setSummary(mListSummaries[2]);
+    }
+
+    @Test
+    public void updateState_noOptionSet_shouldDefaultToOption0() {
+        SystemProperties.set(ThreadedRenderer.DEBUG_OVERDRAW_PROPERTY, null);
+
+        mController.updateState(mPreference);
+
+        verify(mPreference).setValue(mListValues[0]);
+        verify(mPreference).setSummary(mListSummaries[0]);
+    }
+
+    @Test
+    public void onDeveloperOptionsSwitchDisabled_shouldDisablePreference() {
+        mController.onDeveloperOptionsSwitchDisabled();
+
+        verify(mPreference).setEnabled(false);
+    }
+
+    @Test
+    public void onDeveloperOptionsSwitchEnabled_shouldEnablePreference() {
+        mController.onDeveloperOptionsSwitchEnabled();
+
+        verify(mPreference).setEnabled(true);
+    }
+}