Introduce CoolColorTemperaturePreferenceController

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

Bug: 34203528
Test: make RunSettingsRoboTests -j40
Change-Id: I9aca46ef0949b71437f8d181c501b8099d77774c

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

@@ -0,0 +1,94 @@
+/*
+ * 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.annotation.VisibleForTesting;
+import android.support.v14.preference.SwitchPreference;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+import android.widget.Toast;
+
+import com.android.settings.R;
+import com.android.settingslib.development.SystemPropPoker;
+
+public class CoolColorTemperaturePreferenceController extends
+        DeveloperOptionsPreferenceController implements
+        Preference.OnPreferenceChangeListener {
+
+    private static final String COLOR_TEMPERATURE_KEY = "color_temperature";
+
+    @VisibleForTesting
+    static final String COLOR_TEMPERATURE_PROPERTY = "persist.sys.debug.color_temp";
+
+    private SwitchPreference mPreference;
+
+    public CoolColorTemperaturePreferenceController(Context context) {
+        super(context);
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return mContext.getResources().getBoolean(R.bool.config_enableColorTemperature);
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return COLOR_TEMPERATURE_KEY;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        mPreference = (SwitchPreference) screen.findPreference(getPreferenceKey());
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        final boolean isColorTemperatureEnabled = (Boolean) newValue;
+        SystemProperties.set(COLOR_TEMPERATURE_PROPERTY,
+                Boolean.toString(isColorTemperatureEnabled));
+        SystemPropPoker.getInstance().poke();
+        displayColorTemperatureToast();
+        return true;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        final boolean enableColorTemperature = SystemProperties.getBoolean(
+                COLOR_TEMPERATURE_PROPERTY, false /* default */);
+        mPreference.setChecked(enableColorTemperature);
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchEnabled() {
+        mPreference.setEnabled(true);
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchDisabled() {
+        SystemProperties.set(COLOR_TEMPERATURE_PROPERTY, Boolean.toString(false));
+        mPreference.setChecked(false);
+        mPreference.setEnabled(false);
+    }
+
+    @VisibleForTesting
+    void displayColorTemperatureToast() {
+        Toast.makeText(mContext, R.string.color_temperature_toast, Toast.LENGTH_LONG).show();
+    }
+}

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

@@ -183,7 +183,7 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
         // convert to file encryption
         // picture color mode
         // webview implementation
-        // cool color temperature
+        controllers.add(new CoolColorTemperaturePreferenceController(context));
         // automatic system updates
         // system ui demo mode
         // quick settings developer tiles

tests/robotests/res/values-mcc999/config.xml

@@ -0,0 +1,20 @@
+<!--
+  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.
+  -->
+
+<resources>
+    <!-- Whether or not new device intro suggestion is supported for this device -->
+    <bool name="config_enableColorTemperature">false</bool>
+</resources>

tests/robotests/res/values/config.xml

@@ -17,4 +17,5 @@
 <resources>
     <!-- Whether or not new device intro suggestion is supported for this device -->
     <bool name="config_new_device_intro_suggestion_supported">true</bool>
+    <bool name="config_enableColorTemperature">true</bool>
 </resources>

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

@@ -0,0 +1,125 @@
+/*
+ * 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.CoolColorTemperaturePreferenceController
+        .COLOR_TEMPERATURE_PROPERTY;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.doNothing;
+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.content.Context;
+import android.support.v14.preference.SwitchPreference;
+import android.support.v7.preference.PreferenceScreen;
+
+import com.android.settings.TestConfig;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+import com.android.settings.testutils.shadow.SettingsShadowSystemProperties;
+
+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 CoolColorTemperaturePreferenceControllerTest {
+
+    private Context mContext;
+    @Mock
+    private SwitchPreference mPreference;
+    @Mock
+    private PreferenceScreen mPreferenceScreen;
+    private CoolColorTemperaturePreferenceController mController;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mController = new CoolColorTemperaturePreferenceController(mContext);
+        when(mPreferenceScreen.findPreference(mController.getPreferenceKey())).thenReturn(
+                mPreference);
+        mController.displayPreference(mPreferenceScreen);
+    }
+
+    @Test
+    public void onPreferenceChanged_turnOnCoolColorTemperature() {
+        mController.onPreferenceChange(null, true);
+        final boolean mode = SettingsShadowSystemProperties.getBoolean(
+                COLOR_TEMPERATURE_PROPERTY, false);
+
+        assertThat(mode).isTrue();
+    }
+
+    @Test
+    public void onPreferenceChanged_turnOffCoolColorTemperature() {
+        mController.onPreferenceChange(null, false);
+        final boolean mode = SettingsShadowSystemProperties.getBoolean(
+                COLOR_TEMPERATURE_PROPERTY, false);
+
+        assertThat(mode).isFalse();
+    }
+
+    @Test
+    public void updateState_preferenceShouldBeChecked() {
+        SettingsShadowSystemProperties.set(COLOR_TEMPERATURE_PROPERTY,
+                Boolean.toString(true));
+        mController.updateState(mPreference);
+
+        verify(mPreference).setChecked(true);
+    }
+
+    @Test
+    public void updateState_preferenceShouldNotBeChecked() {
+        SettingsShadowSystemProperties.set(COLOR_TEMPERATURE_PROPERTY,
+                Boolean.toString(false));
+        mController.updateState(mPreference);
+
+        verify(mPreference).setChecked(false);
+    }
+
+    @Test
+    public void onDeveloperOptionsDisabled_shouldDisablePreference() {
+        mController.onDeveloperOptionsDisabled();
+
+        verify(mPreference).setEnabled(false);
+        verify(mPreference).setChecked(false);
+    }
+
+    @Test
+    public void onDeveloperOptionsEnabled_shouldEnablePreference() {
+        mController.onDeveloperOptionsEnabled();
+
+        verify(mPreference).setEnabled(true);
+    }
+
+    @Test
+    @Config(qualifiers = "mcc999")
+    public void isAvailable_shouldBeFalse() {
+        assertThat(mController.isAvailable()).isFalse();
+    }
+}