Add setting to disable keyguard widgets

This allows disabling keyguard widgets through Settings.
On new devices, the setting is turned off by default.  If the
user currently has widgets in keyguard, then we keep them
and re-enable the setting.

Change-Id: I7258921231d439925ac8627105710efa99309094

1 files changed, 45 insertions, 2 deletions

diff --git a/services/java/com/android/server/LockSettingsService.java b/services/java/com/android/server/LockSettingsService.java
index e28a258b2db6..c5555c871680 100644
--- a/services/java/com/android/server/LockSettingsService.java
+++ b/services/java/com/android/server/LockSettingsService.java
@@ -16,6 +16,7 @@
 
 package com.android.server;
 
+import android.app.ActivityManagerNative;
 import android.content.ContentResolver;
 import android.content.ContentValues;
 import android.content.Context;
@@ -27,6 +28,9 @@ import static android.Manifest.permission.READ_PROFILE;
 import android.database.Cursor;
 import android.database.sqlite.SQLiteDatabase;
 import android.database.sqlite.SQLiteOpenHelper;
+import android.database.sqlite.SQLiteStatement;
+import android.media.AudioManager;
+import android.media.AudioService;
 import android.os.Binder;
 import android.os.Environment;
 import android.os.RemoteException;
@@ -37,6 +41,7 @@ import android.provider.Settings;
 import android.provider.Settings.Secure;
 import android.provider.Settings.SettingNotFoundException;
 import android.text.TextUtils;
+import android.util.Log;
 import android.util.Slog;
 
 import com.android.internal.widget.ILockSettings;
@@ -391,7 +396,7 @@ public class LockSettingsService extends ILockSettings.Stub {
         private static final String TAG = "LockSettingsDB";
         private static final String DATABASE_NAME = "locksettings.db";
 
-        private static final int DATABASE_VERSION = 1;
+        private static final int DATABASE_VERSION = 2;
 
         public DatabaseHelper(Context context) {
             super(context, DATABASE_NAME, null, DATABASE_VERSION);
@@ -424,7 +429,45 @@ public class LockSettingsService extends ILockSettings.Stub {
 
         @Override
         public void onUpgrade(SQLiteDatabase db, int oldVersion, int currentVersion) {
-            // Nothing yet
+            int upgradeVersion = oldVersion;
+            if (upgradeVersion == 1) {
+                // Set the initial value for {@link LockPatternUtils#LOCKSCREEN_WIDGETS_ENABLED}
+                // during upgrade based on whether each user previously had widgets in keyguard.
+                maybeEnableWidgetSettingForUsers(db);
+                upgradeVersion = 2;
+            }
+
+            if (upgradeVersion != DATABASE_VERSION) {
+                Log.w(TAG, "Failed to upgrade database!");
+            }
+        }
+
+        private void maybeEnableWidgetSettingForUsers(SQLiteDatabase db) {
+            final UserManager um = (UserManager) mContext.getSystemService(USER_SERVICE);
+            final ContentResolver cr = mContext.getContentResolver();
+            final LockPatternUtils utils = new LockPatternUtils(mContext);
+            final List<UserInfo> users = um.getUsers();
+            for (int i = 0; i < users.size(); i++) {
+                final int userId = users.get(i).id;
+                final boolean enabled = utils.hasWidgetsEnabledInKeyguard(userId);
+                Log.v(TAG, "Widget upgrade uid=" + userId + ", enabled="
+                        + enabled + ", w[]=" + utils.getAppWidgets());
+                loadSetting(db, LockPatternUtils.LOCKSCREEN_WIDGETS_ENABLED, userId, enabled);
+            }
+        }
+
+        private void loadSetting(SQLiteDatabase db, String key, int userId, boolean value) {
+            SQLiteStatement stmt = null;
+            try {
+                stmt = db.compileStatement(
+                        "INSERT OR REPLACE INTO locksettings(name,user,value) VALUES(?,?,?);");
+                stmt.bindString(1, key);
+                stmt.bindLong(2, userId);
+                stmt.bindLong(3, value ? 1 : 0);
+                stmt.execute();
+            } finally {
+                if (stmt != null) stmt.close();
+            }
         }
     }