Add a default behavior setting for VICs

Test: atest
Bug: 149696991
Change-Id: Ica06f80a02d65294a7b503fd3556add644c61bd7

src/com/android/settings/notification/app/ImportantConversationBubblePreferenceController.java

@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2020 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.app;
+
+import static android.provider.Settings.Global.NOTIFICATION_BUBBLES;
+import static android.provider.Settings.Secure.BUBBLE_IMPORTANT_CONVERSATIONS;
+
+import android.content.Context;
+import android.provider.Settings;
+
+import androidx.annotation.VisibleForTesting;
+import androidx.preference.Preference;
+
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settings.core.TogglePreferenceController;
+
+public class ImportantConversationBubblePreferenceController extends TogglePreferenceController
+        implements PreferenceControllerMixin, Preference.OnPreferenceChangeListener {
+
+    private static final String TAG = "ImpConvBubPrefContr";
+    @VisibleForTesting
+    static final int ON = 1;
+    @VisibleForTesting
+    static final int OFF = 0;
+
+
+    public ImportantConversationBubblePreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+    }
+
+    private boolean isGloballyEnabled() {
+        return Settings.Global.getInt(mContext.getContentResolver(),
+                NOTIFICATION_BUBBLES, OFF) == ON;
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return isGloballyEnabled() ? AVAILABLE : DISABLED_DEPENDENT_SETTING;
+    }
+
+    @Override
+    public boolean isSliceable() {
+        return false;
+    }
+
+    @Override
+    public boolean isChecked() {
+        return Settings.Secure.getInt(mContext.getContentResolver(),
+                BUBBLE_IMPORTANT_CONVERSATIONS, ON) == ON;
+    }
+
+    @Override
+    public boolean setChecked(boolean isChecked) {
+        return Settings.Secure.putInt(mContext.getContentResolver(),
+                BUBBLE_IMPORTANT_CONVERSATIONS, isChecked ? ON : OFF);
+    }
+}