Introduce AnimatorDurationScalePreferenceCtrl

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

Bug: 34203528
Test: make RunSettingsRoboTests -j40
Change-Id: I38820337184916f5d174814721ff61fd14ae9055

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

@@ -0,0 +1,120 @@
+/*
+ * 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.RemoteException;
+import android.os.ServiceManager;
+import android.support.annotation.VisibleForTesting;
+import android.support.v7.preference.ListPreference;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+import android.view.IWindowManager;
+
+import com.android.settings.R;
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settingslib.development.DeveloperOptionsPreferenceController;
+
+public class AnimatorDurationScalePreferenceController extends
+        DeveloperOptionsPreferenceController implements Preference.OnPreferenceChangeListener,
+        PreferenceControllerMixin {
+
+    private static final String ANIMATOR_DURATION_SCALE_KEY = "animator_duration_scale";
+
+    @VisibleForTesting
+    static final int ANIMATOR_DURATION_SCALE_SELECTOR = 2;
+    @VisibleForTesting
+    static final float DEFAULT_VALUE = 1;
+
+    private final IWindowManager mWindowManager;
+    private final String[] mListValues;
+    private final String[] mListSummaries;
+
+    private ListPreference mPreference;
+
+    public AnimatorDurationScalePreferenceController(Context context) {
+        super(context);
+
+        mWindowManager = IWindowManager.Stub.asInterface(
+                ServiceManager.getService(Context.WINDOW_SERVICE));
+        mListValues = context.getResources().getStringArray(R.array.animator_duration_scale_values);
+        mListSummaries = context.getResources().getStringArray(
+                R.array.animator_duration_scale_entries);
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return ANIMATOR_DURATION_SCALE_KEY;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+
+        mPreference = (ListPreference) screen.findPreference(getPreferenceKey());
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        writeAnimationScaleOption(newValue);
+        return true;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        updateAnimationScaleValue();
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchEnabled() {
+        mPreference.setEnabled(true);
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchDisabled() {
+        writeAnimationScaleOption(null);
+        mPreference.setEnabled(false);
+    }
+
+    private void writeAnimationScaleOption(Object newValue) {
+        try {
+            float scale = newValue != null ? Float.parseFloat(newValue.toString()) : DEFAULT_VALUE;
+            mWindowManager.setAnimationScale(ANIMATOR_DURATION_SCALE_SELECTOR, scale);
+            updateAnimationScaleValue();
+        } catch (RemoteException e) {
+            // intentional no-op
+        }
+    }
+
+    private void updateAnimationScaleValue() {
+        try {
+            final float scale = mWindowManager.getAnimationScale(ANIMATOR_DURATION_SCALE_SELECTOR);
+            int index = 0; // default
+            for (int i = 0; i < mListValues.length; i++) {
+                float val = Float.parseFloat(mListValues[i]);
+                if (scale <= val) {
+                    index = i;
+                    break;
+                }
+            }
+            mPreference.setValue(mListValues[index]);
+            mPreference.setSummary(mListSummaries[index]);
+        } catch (RemoteException e) {
+            // intentional no-op
+        }
+    }
+}

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

@@ -298,7 +298,7 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
         controllers.add(new RtlLayoutPreferenceController(context));
         // window animation scale
         // transition animation scale
-        // animator duration scale
+        controllers.add(new AnimatorDurationScalePreferenceController(context));
         // simulate secondary displays
         // smallest width
         controllers.add(new ForceGpuRenderingPreferenceController(context));

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

@@ -0,0 +1,136 @@
+/*
+ * 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.android.settings.development.AnimatorDurationScalePreferenceController
+        .ANIMATOR_DURATION_SCALE_SELECTOR;
+import static com.android.settings.development.AnimatorDurationScalePreferenceController
+        .DEFAULT_VALUE;
+
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.os.RemoteException;
+import android.support.v7.preference.ListPreference;
+import android.support.v7.preference.PreferenceScreen;
+import android.view.IWindowManager;
+
+import com.android.settings.R;
+import com.android.settings.TestConfig;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+
+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;
+import org.robolectric.util.ReflectionHelpers;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class AnimatorDurationScalePreferenceControllerTest {
+
+    @Mock
+    private ListPreference mPreference;
+    @Mock
+    private PreferenceScreen mScreen;
+    @Mock
+    private IWindowManager mWindowManager;
+
+    /**
+     * 0: Animation off
+     * 1: Animation scale .5x
+     * 2: Animation scale 1x
+     * 3: Animation scale 1.5x
+     * 4: Animation scale 2x
+     * 5: Animation scale 5x
+     * 6: Animation scale 10x
+     */
+    private String[] mListValues;
+    private String[] mListSummaries;
+    private Context mContext;
+    private AnimatorDurationScalePreferenceController mController;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mListValues = mContext.getResources().getStringArray(
+                R.array.animator_duration_scale_values);
+        mListSummaries = mContext.getResources().getStringArray(
+                R.array.animator_duration_scale_entries);
+        mController = new AnimatorDurationScalePreferenceController(mContext);
+        ReflectionHelpers.setField(mController, "mWindowManager", mWindowManager);
+        when(mScreen.findPreference(mController.getPreferenceKey())).thenReturn(mPreference);
+        mController.displayPreference(mScreen);
+    }
+
+    @Test
+    public void onPreferenceChange_noValueSet_shouldSetDefault() throws RemoteException {
+        mController.onPreferenceChange(mPreference, null /* new value */);
+
+        verify(mWindowManager).setAnimationScale(ANIMATOR_DURATION_SCALE_SELECTOR, DEFAULT_VALUE);
+    }
+
+    @Test
+    public void onPreferenceChange_option5Selected_shouldSetOption5() throws RemoteException {
+        mController.onPreferenceChange(mPreference, mListValues[5]);
+
+        verify(mWindowManager).setAnimationScale(ANIMATOR_DURATION_SCALE_SELECTOR,
+                Float.valueOf(mListValues[5]));
+    }
+
+    @Test
+    public void updateState_option5Set_shouldUpdatePreferenceToOption5() throws RemoteException {
+        when(mWindowManager.getAnimationScale(ANIMATOR_DURATION_SCALE_SELECTOR)).thenReturn(
+                Float.valueOf(mListValues[5]));
+
+        mController.updateState(mPreference);
+
+        verify(mPreference).setValue(mListValues[5]);
+        verify(mPreference).setSummary(mListSummaries[5]);
+    }
+
+    @Test
+    public void updateState_option3Set_shouldUpdatePreferenceToOption3() throws RemoteException {
+        when(mWindowManager.getAnimationScale(ANIMATOR_DURATION_SCALE_SELECTOR)).thenReturn(
+                Float.valueOf(mListValues[3]));
+
+        mController.updateState(mPreference);
+
+        verify(mPreference).setValue(mListValues[3]);
+        verify(mPreference).setSummary(mListSummaries[3]);
+    }
+
+    @Test
+    public void onDeveloperOptionsSwitchDisabled_shouldDisablePreference() throws RemoteException {
+        mController.onDeveloperOptionsSwitchDisabled();
+
+        verify(mWindowManager).setAnimationScale(ANIMATOR_DURATION_SCALE_SELECTOR, DEFAULT_VALUE);
+        verify(mPreference).setEnabled(false);
+    }
+
+    @Test
+    public void onDeveloperOptionsSwitchEnabled_shouldEnablePreference() throws RemoteException {
+        mController.onDeveloperOptionsSwitchEnabled();
+
+        verify(mPreference).setEnabled(true);
+    }
+}