diff options
Diffstat (limited to 'src/com/android/launcher3/util/SettingsObserver.java')
-rw-r--r-- | src/com/android/launcher3/util/SettingsObserver.java | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/src/com/android/launcher3/util/SettingsObserver.java b/src/com/android/launcher3/util/SettingsObserver.java new file mode 100644 index 000000000..6baa24293 --- /dev/null +++ b/src/com/android/launcher3/util/SettingsObserver.java @@ -0,0 +1,100 @@ +/* + * 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.launcher3.util; + +import android.content.ContentResolver; +import android.database.ContentObserver; +import android.os.Handler; +import android.provider.Settings; + +public interface SettingsObserver { + + /** + * Registers the content observer to call {@link #onSettingChanged(boolean)} when any of the + * passed settings change. The value passed to onSettingChanged() is based on the key setting. + */ + void register(String keySetting, String ... dependentSettings); + void unregister(); + void onSettingChanged(boolean keySettingEnabled); + + + abstract class Secure extends ContentObserver implements SettingsObserver { + private ContentResolver mResolver; + private String mKeySetting; + + public Secure(ContentResolver resolver) { + super(new Handler()); + mResolver = resolver; + } + + @Override + public void register(String keySetting, String ... dependentSettings) { + mKeySetting = keySetting; + mResolver.registerContentObserver( + Settings.Secure.getUriFor(mKeySetting), false, this); + for (String setting : dependentSettings) { + mResolver.registerContentObserver( + Settings.Secure.getUriFor(setting), false, this); + } + onChange(true); + } + + @Override + public void unregister() { + mResolver.unregisterContentObserver(this); + } + + @Override + public void onChange(boolean selfChange) { + super.onChange(selfChange); + onSettingChanged(Settings.Secure.getInt(mResolver, mKeySetting, 1) == 1); + } + } + + abstract class System extends ContentObserver implements SettingsObserver { + private ContentResolver mResolver; + private String mKeySetting; + + public System(ContentResolver resolver) { + super(new Handler()); + mResolver = resolver; + } + + @Override + public void register(String keySetting, String ... dependentSettings) { + mKeySetting = keySetting; + mResolver.registerContentObserver( + Settings.System.getUriFor(mKeySetting), false, this); + for (String setting : dependentSettings) { + mResolver.registerContentObserver( + Settings.System.getUriFor(setting), false, this); + } + onChange(true); + } + + @Override + public void unregister() { + mResolver.unregisterContentObserver(this); + } + + @Override + public void onChange(boolean selfChange) { + super.onChange(selfChange); + onSettingChanged(Settings.System.getInt(mResolver, mKeySetting, 1) == 1); + } + } +} |