Add ability to read and write flags to sysprops. (89802651) · Commits · e / os / android_frameworks_base

packages/SystemUI/plugin/src/com/android/systemui/flags/Flags.java

+6 −0

Original line number	Diff line number	Diff line
		@@ -18,6 +18,12 @@ package com.android.systemui.flags;

		/**
		* List of {@link Flag} objects for use in SystemUI.
		*
		* Flag Ids are integers. They must be unique.
		*
		* On public release builds, flags will always return their default value. There is no way to
		* change their value on release builds.
		*/
		public class Flags {
		public static final BooleanFlag THE_FIRST_FLAG = new BooleanFlag(1, false);
		}

packages/SystemUI/src-debug/com/android/systemui/flags/FeatureFlagManager.java

+48 −12

Original line number	Diff line number	Diff line
		@@ -18,6 +18,9 @@ package com.android.systemui.flags;

		import com.android.systemui.dagger.SysUISingleton;

		import org.json.JSONException;
		import org.json.JSONObject;

		import javax.inject.Inject;

		/**
		@@ -25,28 +28,61 @@ import javax.inject.Inject;
		*/
		@SysUISingleton
		public class FeatureFlagManager implements FlagReader, FlagWriter {
		private static final String SYSPROP_PREFIX = "persist.systemui.flag_";
		private static final String FIELD_TYPE = "type";
		private static final String FIELD_VALUE = "value";
		private static final String TYPE_BOOLEAN = "boolean";
		private final SystemPropertiesHelper mSystemPropertiesHelper;

		@Inject
		public FeatureFlagManager() {}
		public FeatureFlagManager(SystemPropertiesHelper systemPropertiesHelper) {
		mSystemPropertiesHelper = systemPropertiesHelper;
		}

		/** Return a {@link BooleanFlag}'s value. */
		public boolean isEnabled(int key, boolean defaultValue) {
		return isEnabled(Integer.toString(key), defaultValue);
		String data = mSystemPropertiesHelper.get(keyToSysPropKey(key));
		if (data.isEmpty()) {
		return defaultValue;
		}
		JSONObject json;
		try {
		json = new JSONObject(data);
		if (!assertType(json, TYPE_BOOLEAN)) {
		return defaultValue;
		}
		return json.getBoolean(FIELD_VALUE);
		} catch (JSONException e) {
		// TODO: delete the property
		return defaultValue;
		}

		public boolean isEnabled(String key, boolean defaultValue) {
		// TODO
		return false;
		}

		public void setEnabled(int key, boolean value) {
		setEnabled(Integer.toString(key), value);
		JSONObject json = new JSONObject();
		try {
		json.put(FIELD_TYPE, TYPE_BOOLEAN);
		json.put(FIELD_VALUE, value);
		mSystemPropertiesHelper.set(keyToSysPropKey(key), json.toString());
		} catch (JSONException e) {
		// no-op
		}

		public void setEnabled(String key, boolean value) {
		// TODO
		}

		public void addListener(Listener run) {}

		public void removeListener(Listener run) {}

		private static String keyToSysPropKey(int key) {
		return SYSPROP_PREFIX + key;
		}

		private static boolean assertType(JSONObject json, String type) {
		try {
		return json.getString(FIELD_TYPE).equals(TYPE_BOOLEAN);
		} catch (JSONException e) {
		return false;
		}
		}

		}

packages/SystemUI/src/com/android/systemui/flags/SystemPropertiesHelper.kt

+9 −1

Original line number	Diff line number	Diff line
		@@ -26,11 +26,19 @@ import javax.inject.Inject
		*/
		@SysUISingleton
		open class SystemPropertiesHelper @Inject constructor() {
		fun get(name: String): String {
		return SystemProperties.get(name)
		}

		fun getBoolean(name: String, default: Boolean): Boolean {
		return SystemProperties.getBoolean(name, default)
		}

		fun set(name: String, value: String) {
		SystemProperties.set(name, value)
		}

		fun set(name: String, value: Int) {
		SystemProperties.set(name, value.toString())
		set(name, value.toString())
		}
		}
		No newline at end of file

packages/SystemUI/tests/src/com/android/systemui/flags/FeatureFlagManagerTest.java

0 → 100644

+46 −0

Original line number	Diff line number	Diff line
		/*
		* 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.systemui.flags;

		import static com.google.common.truth.Truth.assertThat;

		import androidx.test.filters.SmallTest;

		import com.android.systemui.SysuiTestCase;

		import org.junit.Before;
		import org.junit.Test;
		import org.mockito.MockitoAnnotations;

		@SmallTest
		public class FeatureFlagManagerTest extends SysuiTestCase {
		FeatureFlagManager mFeatureFlagManager;

		@Before
		public void setup() {
		MockitoAnnotations.initMocks(this);

		mFeatureFlagManager = new FeatureFlagManager();
		}

		@Test
		public void testIsEnabled() {
		mFeatureFlagManager.setEnabled(1, true);
		// Again, nothing changes.
		assertThat(mFeatureFlagManager.isEnabled(1, false)).isFalse();
		}
		}