Adding alarms and reminders activity

Adding a settings screen to control the permission SCHEDULE_EXACT_ALARM.
Apps can start this by starting a newly introduced API intent
REQUEST_SCHEDULE_EXACT_ALARM.

Test: make -j RunSettingsRoboTests
Manually by UI inspection:
Settings -> Apps -> Special App access -> Alarms and Reminders
or by running:
adb shell am start -a android.settings.REQUEST_SCHEDULE_EXACT_ALARM

Bug: 171306433
Bug: 171305516
Change-Id: I1293d38fc50a22b2af46f80ab24f676ed632f964
diff --git a/src/com/android/settings/Settings.java b/src/com/android/settings/Settings.java
index 1008888..f351d26 100644
--- a/src/com/android/settings/Settings.java
+++ b/src/com/android/settings/Settings.java
@@ -204,6 +204,10 @@
     public static class ManagedProfileSettingsActivity extends SettingsActivity { /* empty */ }
     public static class DeletionHelperActivity extends SettingsActivity { /* empty */ }
 
+    /** Actviity to manage apps with {@link android.Manifest.permission#SCHEDULE_EXACT_ALARM} */
+    public static class AlarmsAndRemindersActivity extends SettingsActivity {/* empty */ }
+    /** App specific version of {@link AlarmsAndRemindersActivity} */
+    public static class AlarmsAndRemindersAppActivity extends SettingsActivity {/* empty */ }
 
     public static class ApnEditorActivity extends SettingsActivity { /* empty */ }
     public static class ChooseAccountActivity extends SettingsActivity { /* empty */ }
diff --git a/src/com/android/settings/applications/AppStateAlarmsAndRemindersBridge.java b/src/com/android/settings/applications/AppStateAlarmsAndRemindersBridge.java
new file mode 100644
index 0000000..ccfc87e
--- /dev/null
+++ b/src/com/android/settings/applications/AppStateAlarmsAndRemindersBridge.java
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2021 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.applications;
+
+import android.Manifest;
+import android.app.AppOpsManager;
+import android.content.Context;
+
+import com.android.settingslib.applications.ApplicationsState;
+import com.android.settingslib.applications.ApplicationsState.AppEntry;
+import com.android.settingslib.applications.ApplicationsState.AppFilter;
+
+import java.util.List;
+
+/**
+ * Connects app op info to the ApplicationsState. Extends {@link AppStateAppOpsBridge} to tailor
+ * to the semantics of {@link Manifest.permission#SCHEDULE_EXACT_ALARM}.
+ * Also provides app filters that can use the info.
+ */
+public class AppStateAlarmsAndRemindersBridge extends AppStateAppOpsBridge {
+
+    private AppOpsManager mAppOpsManager;
+
+    public AppStateAlarmsAndRemindersBridge(Context context, ApplicationsState appState,
+            Callback callback) {
+        super(context, appState, callback,
+                AppOpsManager.strOpToOp(AppOpsManager.OPSTR_SCHEDULE_EXACT_ALARM),
+                new String[]{Manifest.permission.SCHEDULE_EXACT_ALARM});
+
+        mAppOpsManager = context.getSystemService(AppOpsManager.class);
+    }
+
+    /**
+     * Returns information regarding {@link Manifest.permission#SCHEDULE_EXACT_ALARM} for the given
+     * package and uid.
+     */
+    public PermissionState createPermissionState(String packageName, int uid) {
+        final PermissionState permState = getPermissionInfo(packageName, uid);
+        permState.appOpMode = mAppOpsManager.unsafeCheckOpRawNoThrow(
+                AppOpsManager.OPSTR_SCHEDULE_EXACT_ALARM, uid, packageName);
+        return permState;
+    }
+
+    @Override
+    protected void updateExtraInfo(AppEntry app, String pkg, int uid) {
+        app.extraInfo = createPermissionState(pkg, uid);
+    }
+
+    @Override
+    protected void loadAllExtraInfo() {
+        final List<AppEntry> allApps = mAppSession.getAllApps();
+        for (int i = 0; i < allApps.size(); i++) {
+            final AppEntry currentEntry = allApps.get(i);
+            updateExtraInfo(currentEntry, currentEntry.info.packageName, currentEntry.info.uid);
+        }
+    }
+
+    public static final AppFilter FILTER_CLOCK_APPS = new AppFilter() {
+
+        @Override
+        public void init() {
+        }
+
+        @Override
+        public boolean filterApp(AppEntry info) {
+            if (info.extraInfo instanceof PermissionState) {
+                final PermissionState permissionState = (PermissionState) info.extraInfo;
+                return permissionState.permissionDeclared;
+            }
+            return false;
+        }
+    };
+
+}
diff --git a/src/com/android/settings/applications/AppStateAppOpsBridge.java b/src/com/android/settings/applications/AppStateAppOpsBridge.java
index b4f6e48..2ccdc78 100755
--- a/src/com/android/settings/applications/AppStateAppOpsBridge.java
+++ b/src/com/android/settings/applications/AppStateAppOpsBridge.java
@@ -277,7 +277,7 @@
             if (pe == null) {
                 Log.w(TAG, "AppOp permission exists for package " + packageOp.getPackageName()
                         + " of user " + userId + " but package doesn't exist or did not request "
-                        + mPermissions + " access");
+                        + Arrays.toString(mPermissions) + " access");
                 continue;
             }
 
diff --git a/src/com/android/settings/applications/appinfo/AlarmsAndRemindersDetails.java b/src/com/android/settings/applications/appinfo/AlarmsAndRemindersDetails.java
new file mode 100644
index 0000000..95835cb
--- /dev/null
+++ b/src/com/android/settings/applications/appinfo/AlarmsAndRemindersDetails.java
@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2021 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.applications.appinfo;
+
+import static android.app.Activity.RESULT_CANCELED;
+import static android.app.Activity.RESULT_OK;
+
+import android.app.AppOpsManager;
+import android.app.settings.SettingsEnums;
+import android.content.Context;
+import android.os.Bundle;
+
+import androidx.appcompat.app.AlertDialog;
+import androidx.preference.Preference;
+import androidx.preference.Preference.OnPreferenceChangeListener;
+
+import com.android.settings.R;
+import com.android.settings.Settings;
+import com.android.settings.applications.AppInfoWithHeader;
+import com.android.settings.applications.AppStateAlarmsAndRemindersBridge;
+import com.android.settings.applications.AppStateAppOpsBridge;
+import com.android.settingslib.RestrictedSwitchPreference;
+import com.android.settingslib.applications.ApplicationsState.AppEntry;
+
+/**
+ * App specific activity to show details about
+ * {@link android.Manifest.permission#SCHEDULE_EXACT_ALARM}.
+ */
+public class AlarmsAndRemindersDetails extends AppInfoWithHeader
+        implements OnPreferenceChangeListener {
+
+    private static final String KEY_SWITCH = "alarms_and_reminders_switch";
+
+    private AppStateAlarmsAndRemindersBridge mAppBridge;
+    private AppOpsManager mAppOpsManager;
+    private RestrictedSwitchPreference mSwitchPref;
+    private AppStateAppOpsBridge.PermissionState mPermissionState;
+
+    /**
+     * Returns the string that states whether the app has access to
+     * {@link android.Manifest.permission#SCHEDULE_EXACT_ALARM}.
+     */
+    public static int getSummary(Context context, AppEntry entry) {
+        final AppStateAppOpsBridge.PermissionState state;
+        if (entry.extraInfo instanceof AppStateAppOpsBridge.PermissionState) {
+            state = (AppStateAppOpsBridge.PermissionState) entry.extraInfo;
+        } else {
+            state = new AppStateAlarmsAndRemindersBridge(context, /*appState=*/null,
+                    /*callback=*/null).createPermissionState(entry.info.packageName,
+                    entry.info.uid);
+        }
+
+        return state.isPermissible() ? R.string.app_permission_summary_allowed
+                : R.string.app_permission_summary_not_allowed;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        final Context context = getActivity();
+        mAppBridge = new AppStateAlarmsAndRemindersBridge(context, mState, /*callback=*/null);
+        mAppOpsManager = context.getSystemService(AppOpsManager.class);
+
+        addPreferencesFromResource(R.xml.alarms_and_reminders);
+        mSwitchPref = findPreference(KEY_SWITCH);
+        mSwitchPref.setOnPreferenceChangeListener(this);
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        final boolean checked = (Boolean) newValue;
+        if (preference == mSwitchPref) {
+            if (mPermissionState != null && checked != mPermissionState.isPermissible()) {
+                if (Settings.AlarmsAndRemindersAppActivity.class.getName().equals(
+                        getIntent().getComponent().getClassName())) {
+                    setResult(checked ? RESULT_OK : RESULT_CANCELED);
+                }
+                setCanScheduleAlarms(checked);
+                logPermissionChange(checked, mPackageName);
+                refreshUi();
+            }
+            return true;
+        }
+        return false;
+    }
+
+    private void setCanScheduleAlarms(boolean newState) {
+        mAppOpsManager.setUidMode(AppOpsManager.OPSTR_SCHEDULE_EXACT_ALARM,
+                mPackageInfo.applicationInfo.uid,
+                newState ? AppOpsManager.MODE_ALLOWED : AppOpsManager.MODE_ERRORED);
+    }
+
+    private void logPermissionChange(boolean newState, String packageName) {
+        mMetricsFeatureProvider.action(
+                mMetricsFeatureProvider.getAttribution(getActivity()),
+                SettingsEnums.ACTION_ALARMS_AND_REMINDERS_TOGGLE,
+                getMetricsCategory(),
+                packageName,
+                newState ? 1 : 0);
+    }
+
+    @Override
+    protected boolean refreshUi() {
+        if (mPackageInfo == null || mPackageInfo.applicationInfo == null) {
+            return false;
+        }
+        mPermissionState = mAppBridge.createPermissionState(mPackageName,
+                mPackageInfo.applicationInfo.uid);
+        mSwitchPref.setEnabled(mPermissionState.permissionDeclared);
+        mSwitchPref.setChecked(mPermissionState.isPermissible());
+        return true;
+    }
+
+    @Override
+    protected AlertDialog createDialog(int id, int errorCode) {
+        return null;
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        return SettingsEnums.ALARMS_AND_REMINDERS;
+    }
+}
diff --git a/src/com/android/settings/applications/manageapplications/AppFilterRegistry.java b/src/com/android/settings/applications/manageapplications/AppFilterRegistry.java
index b370ad2..f4de226 100644
--- a/src/com/android/settings/applications/manageapplications/AppFilterRegistry.java
+++ b/src/com/android/settings/applications/manageapplications/AppFilterRegistry.java
@@ -19,6 +19,7 @@
 import androidx.annotation.IntDef;
 
 import com.android.settings.R;
+import com.android.settings.applications.AppStateAlarmsAndRemindersBridge;
 import com.android.settings.applications.AppStateInstallAppsBridge;
 import com.android.settings.applications.AppStateManageExternalStorageBridge;
 import com.android.settings.applications.AppStateNotificationBridge;
@@ -50,6 +51,7 @@
             FILTER_APPS_WRITE_SETTINGS,
             FILTER_APPS_INSTALL_SOURCES,
             FILTER_APPS_BLOCKED,
+            FILTER_ALARMS_AND_REMINDERS,
     })
     @interface FilterType {
     }
@@ -73,6 +75,7 @@
     public static final int FILTER_APP_CAN_CHANGE_WIFI_STATE = 15;
     public static final int FILTER_APPS_BLOCKED = 16;
     public static final int FILTER_MANAGE_EXTERNAL_STORAGE = 17;
+    public static final int FILTER_ALARMS_AND_REMINDERS = 18;
     // Next id: 18. If you add an entry here, length of mFilters should be updated
 
     private static AppFilterRegistry sRegistry;
@@ -80,7 +83,7 @@
     private final AppFilterItem[] mFilters;
 
     private AppFilterRegistry() {
-        mFilters = new AppFilterItem[18];
+        mFilters = new AppFilterItem[19];
 
         // High power allowlist, on
         mFilters[FILTER_APPS_POWER_ALLOWLIST] = new AppFilterItem(
@@ -185,6 +188,12 @@
                 AppStateManageExternalStorageBridge.FILTER_MANAGE_EXTERNAL_STORAGE,
                 FILTER_MANAGE_EXTERNAL_STORAGE,
                 R.string.filter_manage_external_storage);
+
+        // Apps that can schedule alarms and reminders
+        mFilters[FILTER_ALARMS_AND_REMINDERS] = new AppFilterItem(
+                AppStateAlarmsAndRemindersBridge.FILTER_CLOCK_APPS,
+                FILTER_ALARMS_AND_REMINDERS,
+                R.string.alarms_and_reminders_title);
     }
 
     public static AppFilterRegistry getInstance() {
@@ -213,6 +222,8 @@
                 return FILTER_APPS_RECENT;
             case ManageApplications.LIST_MANAGE_EXTERNAL_STORAGE:
                 return FILTER_MANAGE_EXTERNAL_STORAGE;
+            case ManageApplications.LIST_TYPE_ALARMS_AND_REMINDERS:
+                return FILTER_ALARMS_AND_REMINDERS;
             default:
                 return FILTER_APPS_ALL;
         }
diff --git a/src/com/android/settings/applications/manageapplications/ManageApplications.java b/src/com/android/settings/applications/manageapplications/ManageApplications.java
index 707e6f4..2dadbbc 100644
--- a/src/com/android/settings/applications/manageapplications/ManageApplications.java
+++ b/src/com/android/settings/applications/manageapplications/ManageApplications.java
@@ -91,6 +91,7 @@
 import com.android.settings.SettingsActivity;
 import com.android.settings.Utils;
 import com.android.settings.applications.AppInfoBase;
+import com.android.settings.applications.AppStateAlarmsAndRemindersBridge;
 import com.android.settings.applications.AppStateAppOpsBridge.PermissionState;
 import com.android.settings.applications.AppStateBaseBridge;
 import com.android.settings.applications.AppStateInstallAppsBridge;
@@ -104,6 +105,7 @@
 import com.android.settings.applications.AppStateWriteSettingsBridge;
 import com.android.settings.applications.AppStorageSettings;
 import com.android.settings.applications.UsageAccessDetails;
+import com.android.settings.applications.appinfo.AlarmsAndRemindersDetails;
 import com.android.settings.applications.appinfo.AppInfoDashboardFragment;
 import com.android.settings.applications.appinfo.DrawOverlayDetails;
 import com.android.settings.applications.appinfo.ExternalSourcesDetails;
@@ -230,6 +232,7 @@
     public static final int LIST_TYPE_PHOTOGRAPHY = 11;
     public static final int LIST_TYPE_WIFI_ACCESS = 13;
     public static final int LIST_MANAGE_EXTERNAL_STORAGE = 14;
+    public static final int LIST_TYPE_ALARMS_AND_REMINDERS = 15;
 
     // List types that should show instant apps.
     public static final Set<Integer> LIST_TYPES_WITH_INSTANT = new ArraySet<>(Arrays.asList(
@@ -321,6 +324,9 @@
         } else if (className.equals(Settings.ManageExternalStorageActivity.class.getName())) {
             mListType = LIST_MANAGE_EXTERNAL_STORAGE;
             screenTitle = R.string.manage_external_storage_title;
+        } else if (className.equals(Settings.AlarmsAndRemindersActivity.class.getName())) {
+            mListType = LIST_TYPE_ALARMS_AND_REMINDERS;
+            screenTitle = R.string.alarms_and_reminders_title;
         } else if (className.equals(Settings.NotificationAppListActivity.class.getName())) {
             mListType = LIST_TYPE_NOTIFICATION;
             mUsageStatsManager = IUsageStatsManager.Stub.asInterface(
@@ -545,6 +551,8 @@
                 return SettingsEnums.CONFIGURE_WIFI;
             case LIST_MANAGE_EXTERNAL_STORAGE:
                 return SettingsEnums.MANAGE_EXTERNAL_STORAGE;
+            case LIST_TYPE_ALARMS_AND_REMINDERS:
+                return SettingsEnums.ALARMS_AND_REMINDERS;
             default:
                 return SettingsEnums.PAGE_UNKNOWN;
         }
@@ -666,6 +674,10 @@
                 startAppInfoFragment(ManageExternalStorageDetails.class,
                         R.string.manage_external_storage_title);
                 break;
+            case LIST_TYPE_ALARMS_AND_REMINDERS:
+                startAppInfoFragment(AlarmsAndRemindersDetails.class,
+                        R.string.alarms_and_reminders_label);
+                break;
             // TODO: Figure out if there is a way where we can spin up the profile's settings
             // process ahead of time, to avoid a long load of data when user clicks on a managed
             // app. Maybe when they load the list of apps that contains managed profile apps.
@@ -744,6 +756,8 @@
                 return R.string.help_uri_apps_wifi_access;
             case LIST_MANAGE_EXTERNAL_STORAGE:
                 return R.string.help_uri_manage_external_storage;
+            case LIST_TYPE_ALARMS_AND_REMINDERS:
+                return R.string.help_uri_alarms_and_reminders;
             default:
             case LIST_TYPE_MAIN:
                 return R.string.help_uri_apps;
@@ -1066,6 +1080,8 @@
                 mExtraInfoBridge = new AppStateChangeWifiStateBridge(mContext, mState, this);
             } else if (mManageApplications.mListType == LIST_MANAGE_EXTERNAL_STORAGE) {
                 mExtraInfoBridge = new AppStateManageExternalStorageBridge(mContext, mState, this);
+            } else if (mManageApplications.mListType == LIST_TYPE_ALARMS_AND_REMINDERS) {
+                mExtraInfoBridge = new AppStateAlarmsAndRemindersBridge(mContext, mState, this);
             } else {
                 mExtraInfoBridge = null;
             }
@@ -1527,6 +1543,9 @@
                 case LIST_MANAGE_EXTERNAL_STORAGE:
                     holder.setSummary(ManageExternalStorageDetails.getSummary(mContext, entry));
                     break;
+                case LIST_TYPE_ALARMS_AND_REMINDERS:
+                    holder.setSummary(AlarmsAndRemindersDetails.getSummary(mContext, entry));
+                    break;
                 default:
                     holder.updateSizeText(entry, mManageApplications.mInvalidSizeStr, mWhichSize);
                     break;
diff --git a/src/com/android/settings/core/gateway/SettingsGateway.java b/src/com/android/settings/core/gateway/SettingsGateway.java
index 46bea30..bc2582e 100644
--- a/src/com/android/settings/core/gateway/SettingsGateway.java
+++ b/src/com/android/settings/core/gateway/SettingsGateway.java
@@ -39,6 +39,7 @@
 import com.android.settings.applications.ProcessStatsSummary;
 import com.android.settings.applications.ProcessStatsUi;
 import com.android.settings.applications.UsageAccessDetails;
+import com.android.settings.applications.appinfo.AlarmsAndRemindersDetails;
 import com.android.settings.applications.appinfo.AppInfoDashboardFragment;
 import com.android.settings.applications.appinfo.DrawOverlayDetails;
 import com.android.settings.applications.appinfo.ExternalSourcesDetails;
@@ -313,7 +314,8 @@
             InteractAcrossProfilesSettings.class.getName(),
             InteractAcrossProfilesDetails.class.getName(),
             MediaControlsSettings.class.getName(),
-            NetworkProviderSettings.class.getName()
+            NetworkProviderSettings.class.getName(),
+            AlarmsAndRemindersDetails.class.getName(),
     };
 
     public static final String[] SETTINGS_FOR_RESTRICTED = {