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/RedactNotificationPreferenceController.java

@@ -0,0 +1,130 @@
+/*
+ * 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 static android.app.admin.DevicePolicyManager.KEYGUARD_DISABLE_UNREDACTED_NOTIFICATIONS;
+import static android.provider.Settings.Secure.LOCK_SCREEN_ALLOW_PRIVATE_NOTIFICATIONS;
+
+import android.app.KeyguardManager;
+import android.app.admin.DevicePolicyManager;
+import android.content.Context;
+import android.os.UserHandle;
+import android.os.UserManager;
+import android.provider.Settings;
+
+import com.android.internal.widget.LockPatternUtils;
+import com.android.settings.Utils;
+import com.android.settings.core.TogglePreferenceController;
+import com.android.settings.overlay.FeatureFactory;
+
+public class RedactNotificationPreferenceController extends TogglePreferenceController {
+
+    private static final String TAG = "LockScreenNotifPref";
+
+    static final String KEY_LOCKSCREEN_REDACT = "lock_screen_redact";
+    static final String KEY_LOCKSCREEN_WORK_PROFILE_REDACT = "lock_screen_work_redact";
+
+    private DevicePolicyManager mDpm;
+    private UserManager mUm;
+    private KeyguardManager mKm;
+    private final int mProfileUserId;
+
+    public RedactNotificationPreferenceController(Context context, String settingKey) {
+        super(context, settingKey);
+
+        mUm = context.getSystemService(UserManager.class);
+        mDpm = context.getSystemService(DevicePolicyManager.class);
+        mKm = context.getSystemService(KeyguardManager.class);
+
+        mProfileUserId = Utils.getManagedProfileId(mUm, UserHandle.myUserId());
+    }
+
+    @Override
+    public boolean isChecked() {
+        int userId = KEY_LOCKSCREEN_REDACT.equals(getPreferenceKey())
+                ? UserHandle.myUserId() : mProfileUserId;
+
+        return getAllowPrivateNotifications(userId);
+    }
+
+    @Override
+    public boolean setChecked(boolean isChecked) {
+        int userId = KEY_LOCKSCREEN_REDACT.equals(getPreferenceKey())
+                ? UserHandle.myUserId() : mProfileUserId;
+
+        Settings.Secure.putIntForUser(mContext.getContentResolver(),
+                Settings.Secure.LOCK_SCREEN_ALLOW_PRIVATE_NOTIFICATIONS, isChecked ? 1 : 0, userId);
+        return true;
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        // hide work profile setting if no work profile
+        if (KEY_LOCKSCREEN_WORK_PROFILE_REDACT.equals(getPreferenceKey())
+                && mProfileUserId == UserHandle.USER_NULL) {
+            return CONDITIONALLY_UNAVAILABLE;
+        }
+
+        int userId = KEY_LOCKSCREEN_REDACT.equals(getPreferenceKey())
+                ? UserHandle.myUserId() : mProfileUserId;
+
+        // hide if lockscreen isn't secure for this user
+        final LockPatternUtils utils = FeatureFactory.getFactory(mContext)
+                .getSecurityFeatureProvider()
+                .getLockPatternUtils(mContext);
+        if (!utils.isSecure(userId)) {
+            return CONDITIONALLY_UNAVAILABLE;
+        }
+
+        // all notifs hidden? admin doesn't allow notifs or redacted notifs? disabled
+        if (!getLockscreenNotificationsEnabled(userId)
+                || !adminAllowsNotifications(userId)
+                || !adminAllowsUnredactedNotifications(userId)) {
+            return DISABLED_DEPENDENT_SETTING;
+        }
+
+        // specifically the work profile setting requires the work profile to be unlocked
+        if (KEY_LOCKSCREEN_WORK_PROFILE_REDACT.equals(getPreferenceKey())) {
+            if (mKm.isDeviceLocked(mProfileUserId)) {
+                return DISABLED_DEPENDENT_SETTING;
+            }
+        }
+
+        return AVAILABLE;
+    }
+
+    private boolean adminAllowsNotifications(int userId) {
+        final int dpmFlags = mDpm.getKeyguardDisabledFeatures(null/* admin */, userId);
+        return (dpmFlags & KEYGUARD_DISABLE_SECURE_NOTIFICATIONS) == 0;
+    }
+
+    private boolean adminAllowsUnredactedNotifications(int userId) {
+        final int dpmFlags = mDpm.getKeyguardDisabledFeatures(null/* admin */, userId);
+        return (dpmFlags & KEYGUARD_DISABLE_UNREDACTED_NOTIFICATIONS) == 0;
+    }
+
+    private boolean getAllowPrivateNotifications(int userId) {
+        return Settings.Secure.getIntForUser(mContext.getContentResolver(),
+                LOCK_SCREEN_ALLOW_PRIVATE_NOTIFICATIONS, 1, userId) != 0;
+    }
+
+   private boolean getLockscreenNotificationsEnabled(int userId) {
+        return Settings.Secure.getIntForUser(mContext.getContentResolver(),
+                Settings.Secure.LOCK_SCREEN_SHOW_NOTIFICATIONS, 1, userId) != 0;
+    }
+}