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Diffstat (limited to 'src/com/android/launcher3/util/SettingsObserver.java')
-rw-r--r--src/com/android/launcher3/util/SettingsObserver.java100
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diff --git a/src/com/android/launcher3/util/SettingsObserver.java b/src/com/android/launcher3/util/SettingsObserver.java
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+++ b/src/com/android/launcher3/util/SettingsObserver.java
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+/*
+ * 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);
+ }
+ }
+}