Config notifs page updates

- Remove unused settings
- Regroup and combine lockscreen settings. The original
lockscreen controller is used in other places (SUW and privacy)
and so it's left untouched for those uses for now.

Test: atest
Bug: 132971502
Change-Id: Ic82817ff98cab27ca35b9488ae2e0eb6922a18e8

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

@@ -0,0 +1,160 @@
+/*
+ * Copyright (C) 2019 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 static android.app.admin.DevicePolicyManager.KEYGUARD_DISABLE_SECURE_NOTIFICATIONS;
+
+import android.app.admin.DevicePolicyManager;
+import android.content.Context;
+import android.os.UserHandle;
+import android.provider.Settings;
+
+import com.android.settings.R;
+import com.android.settings.RestrictedListPreference;
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settingslib.RestrictedLockUtils;
+import com.android.settingslib.RestrictedLockUtilsInternal;
+import com.android.settingslib.core.AbstractPreferenceController;
+
+import com.google.common.annotations.VisibleForTesting;
+
+import java.util.ArrayList;
+
+import androidx.preference.Preference;
+
+public class ShowOnLockScreenNotificationPreferenceController extends AbstractPreferenceController
+        implements PreferenceControllerMixin, Preference.OnPreferenceChangeListener {
+
+    private static final String TAG = "LockScreenNotifPref";
+
+    private final String mSettingKey;
+    private DevicePolicyManager mDpm;
+
+    public ShowOnLockScreenNotificationPreferenceController(Context context, String settingKey) {
+        super(context);
+        mSettingKey = settingKey;
+        mDpm = context.getSystemService(DevicePolicyManager.class);
+    }
+
+    @VisibleForTesting
+    void setDpm(DevicePolicyManager dpm) {
+        mDpm = dpm;
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return mSettingKey;
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return true;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        RestrictedListPreference pref = (RestrictedListPreference) preference;
+        pref.clearRestrictedItems();
+        ArrayList<CharSequence> entries = new ArrayList<>();
+        ArrayList<CharSequence> values = new ArrayList<>();
+
+        String showAllEntry =
+                mContext.getString(R.string.lock_screen_notifs_show_all);
+        String showAllEntryValue =
+                Integer.toString(R.string.lock_screen_notifs_show_all);
+        entries.add(showAllEntry);
+        values.add(showAllEntryValue);
+        setRestrictedIfNotificationFeaturesDisabled(pref, showAllEntry, showAllEntryValue,
+                KEYGUARD_DISABLE_SECURE_NOTIFICATIONS);
+
+        String alertingEntry = mContext.getString(R.string.lock_screen_notifs_show_alerting);
+        String alertingEntryValue = Integer.toString(R.string.lock_screen_notifs_show_alerting);
+        entries.add(alertingEntry);
+        values.add(alertingEntryValue);
+        setRestrictedIfNotificationFeaturesDisabled(pref, alertingEntry, alertingEntryValue,
+                KEYGUARD_DISABLE_SECURE_NOTIFICATIONS);
+
+        entries.add(mContext.getString(R.string.lock_screen_notifs_show_none));
+        values.add(Integer.toString(R.string.lock_screen_notifs_show_none));
+
+        pref.setEntries(entries.toArray(new CharSequence[entries.size()]));
+        pref.setEntryValues(values.toArray(new CharSequence[values.size()]));
+
+        if (!adminAllowsNotifications() || !getLockscreenNotificationsEnabled()) {
+            pref.setValue(Integer.toString(R.string.lock_screen_notifs_show_none));
+        } else if (!getLockscreenSilentNotificationsEnabled()) {
+            pref.setValue(Integer.toString(R.string.lock_screen_notifs_show_alerting));
+        } else {
+            pref.setValue(Integer.toString(R.string.lock_screen_notifs_show_all));
+        }
+
+        pref.setOnPreferenceChangeListener(this);
+
+        refreshSummary(preference);
+    }
+
+    @Override
+    public CharSequence getSummary() {
+        if (!adminAllowsNotifications() || !getLockscreenNotificationsEnabled()) {
+            return mContext.getString(R.string.lock_screen_notifs_show_none);
+        } else if (!getLockscreenSilentNotificationsEnabled()) {
+            return mContext.getString(R.string.lock_screen_notifs_show_alerting);
+        } else {
+            return mContext.getString(R.string.lock_screen_notifs_show_all);
+        }
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        final int val = Integer.parseInt((String) newValue);
+        final boolean enabled = val != R.string.lock_screen_notifs_show_none;
+        final boolean show = val == R.string.lock_screen_notifs_show_all;
+        Settings.Secure.putInt(mContext.getContentResolver(),
+                Settings.Secure.LOCK_SCREEN_SHOW_SILENT_NOTIFICATIONS, show ? 1 : 0);
+        Settings.Secure.putInt(mContext.getContentResolver(),
+                Settings.Secure.LOCK_SCREEN_SHOW_NOTIFICATIONS, enabled ? 1 : 0);
+        refreshSummary(preference);
+        return true;
+    }
+
+    private void setRestrictedIfNotificationFeaturesDisabled(RestrictedListPreference pref,
+            CharSequence entry, CharSequence entryValue, int keyguardNotificationFeatures) {
+        RestrictedLockUtils.EnforcedAdmin admin =
+                RestrictedLockUtilsInternal.checkIfKeyguardFeaturesDisabled(
+                        mContext, keyguardNotificationFeatures, UserHandle.myUserId());
+        if (admin != null && pref != null) {
+            RestrictedListPreference.RestrictedItem item =
+                    new RestrictedListPreference.RestrictedItem(entry, entryValue, admin);
+            pref.addRestrictedItem(item);
+        }
+    }
+
+    private boolean adminAllowsNotifications() {
+        final int dpmFlags = mDpm.getKeyguardDisabledFeatures(null/* admin */);
+        return (dpmFlags & KEYGUARD_DISABLE_SECURE_NOTIFICATIONS) == 0;
+    }
+
+    private boolean getLockscreenNotificationsEnabled() {
+        return Settings.Secure.getInt(mContext.getContentResolver(),
+                Settings.Secure.LOCK_SCREEN_SHOW_NOTIFICATIONS, 0) != 0;
+    }
+
+    private boolean getLockscreenSilentNotificationsEnabled() {
+        return Settings.Secure.getInt(mContext.getContentResolver(),
+                Settings.Secure.LOCK_SCREEN_SHOW_SILENT_NOTIFICATIONS, 0) != 0;
+    }
+}