Rename ZenMode(s)SettingsBase to ZenMode(s)FragmentBase

to be more consistent with more Settings usages and with the DashboardFragment class these extend.

Flag: android.app.modes_ui
Bug: 335259054
Test: n/a, just renamed
Change-Id: Ie64c06eb3ed92822ba47cf272f507d4b4a85d11c

src/com/android/settings/notification/modes/ZenModesFragmentBase.java

@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2024 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.notification.modes;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.content.Context;
+import android.database.ContentObserver;
+import android.net.Uri;
+import android.os.Handler;
+import android.os.UserManager;
+import android.provider.Settings.Global;
+import android.util.Log;
+
+import com.android.settings.dashboard.RestrictedDashboardFragment;
+
+/**
+ * Base class for all Settings pages controlling Modes behavior.
+ */
+abstract class ZenModesFragmentBase extends RestrictedDashboardFragment {
+    protected static final String TAG = "ZenModesSettings";
+    protected static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
+
+    private final Handler mHandler = new Handler();
+    private final SettingsObserver mSettingsObserver = new SettingsObserver();
+
+    protected Context mContext;
+
+    protected ZenModesBackend mBackend;
+
+    // Individual pages must implement this method based on what they should do when
+    // the device's zen mode state changes.
+    protected abstract void updateZenModeState();
+
+    ZenModesFragmentBase() {
+        super(UserManager.DISALLOW_ADJUST_VOLUME);
+    }
+
+    @Override
+    protected String getLogTag() {
+        return TAG;
+    }
+
+    @Override
+    public void onAttach(@NonNull Context context) {
+        super.onAttach(context);
+        mContext = context;
+        mBackend = ZenModesBackend.getInstance(context);
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+        updateZenModeState();
+        mSettingsObserver.register();
+        if (isUiRestricted()) {
+            if (isUiRestrictedByOnlyAdmin()) {
+                getPreferenceScreen().removeAll();
+                return;
+            } else {
+                finish();
+            }
+        }
+    }
+
+    @Override
+    public void onStop() {
+        super.onStop();
+        mSettingsObserver.unregister();
+    }
+
+    private final class SettingsObserver extends ContentObserver {
+        private static final Uri ZEN_MODE_URI = Global.getUriFor(Global.ZEN_MODE);
+        private static final Uri ZEN_MODE_CONFIG_ETAG_URI = Global.getUriFor(
+                Global.ZEN_MODE_CONFIG_ETAG);
+
+        private SettingsObserver() {
+            super(mHandler);
+        }
+
+        public void register() {
+            getContentResolver().registerContentObserver(ZEN_MODE_URI, false, this);
+            getContentResolver().registerContentObserver(ZEN_MODE_CONFIG_ETAG_URI, false, this);
+        }
+
+        public void unregister() {
+            getContentResolver().unregisterContentObserver(this);
+        }
+
+        @Override
+        public void onChange(boolean selfChange, @Nullable Uri uri) {
+            super.onChange(selfChange, uri);
+            // Shouldn't have any other URIs trigger this method, but check just in case.
+            if (ZEN_MODE_URI.equals(uri) || ZEN_MODE_CONFIG_ETAG_URI.equals(uri)) {
+                updateZenModeState();
+            }
+        }
+    }
+}