Added footers to zen mode settings

ZenModeSettings Footer displays when DND will end
ZenModeBehaviorSettings Footer describes why dnd behavior cannot be changed when
in alarms only or total silence mode

Test: make RunSettingsRoboTests -j40
Bug: 63077372
Change-Id: Iefbb3995da4af2b210c8e0c3c3a798d3c613e275

src/com/android/settings/notification/ZenModeBehaviorFooterPreferenceController.java

@@ -0,0 +1,101 @@
+/*
+ * 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.settings.notification;
+
+import android.content.Context;
+import android.content.ComponentName;
+import android.net.Uri;
+import android.provider.Settings;
+import android.service.notification.ZenModeConfig;
+import android.support.v7.preference.Preference;
+import android.util.Slog;
+
+import com.android.settings.R;
+import com.android.settingslib.core.lifecycle.Lifecycle;
+
+public class ZenModeBehaviorFooterPreferenceController extends AbstractZenModePreferenceController {
+
+    protected static final String KEY = "footer_preference";
+
+    public ZenModeBehaviorFooterPreferenceController(Context context, Lifecycle lifecycle) {
+        super(context, KEY, lifecycle);
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return isDeprecatedZenMode(getZenMode());
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return KEY;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        super.updateState(preference);
+
+        boolean isAvailable = isAvailable();
+        preference.setVisible(isAvailable);
+        if (isAvailable) {
+            preference.setTitle(getFooterText());
+        }
+
+    }
+
+    protected String getFooterText() {
+        ZenModeConfig config = getZenModeConfig();
+
+        // DND turned on by manual rule with deprecated zen mode
+        if (config.manualRule != null &&
+                isDeprecatedZenMode(config.manualRule.zenMode)) {
+            final Uri id = config.manualRule.conditionId;
+            if (config.manualRule.enabler != null) {
+                // app triggered manual rule
+                String appOwner = mZenModeConfigWrapper.getOwnerCaption(config.manualRule.enabler);
+                if (!appOwner.isEmpty()) {
+                    return mContext.getString(R.string.zen_mode_app_set_behavior, appOwner);
+                }
+            } else {
+                return mContext.getString(R.string.zen_mode_qs_set_behavior);
+            }
+        }
+
+        // DND turned on by an automatic rule with deprecated zen mode
+        for (ZenModeConfig.ZenRule automaticRule : config.automaticRules.values()) {
+            if (automaticRule.isAutomaticActive() && isDeprecatedZenMode(automaticRule.zenMode)) {
+                ComponentName component = automaticRule.component;
+                if (component != null) {
+                    return mContext.getString(R.string.zen_mode_app_set_behavior,
+                            component.getPackageName());
+                }
+            }
+        }
+
+        return mContext.getString(R.string.zen_mode_unknown_app_set_behavior);
+    }
+
+    private boolean isDeprecatedZenMode(int zenMode) {
+        switch (zenMode) {
+            case Settings.Global.ZEN_MODE_NO_INTERRUPTIONS:
+            case Settings.Global.ZEN_MODE_ALARMS:
+                return true;
+            default:
+                return false;
+        }
+    }
+}