diff options
Diffstat (limited to 'packages/SettingsProvider/src/com/android/providers/settings/SettingsHelper.java')
-rw-r--r-- | packages/SettingsProvider/src/com/android/providers/settings/SettingsHelper.java | 124 |
1 files changed, 107 insertions, 17 deletions
diff --git a/packages/SettingsProvider/src/com/android/providers/settings/SettingsHelper.java b/packages/SettingsProvider/src/com/android/providers/settings/SettingsHelper.java index 4144c80..1cad610 100644 --- a/packages/SettingsProvider/src/com/android/providers/settings/SettingsHelper.java +++ b/packages/SettingsProvider/src/com/android/providers/settings/SettingsHelper.java @@ -19,7 +19,10 @@ package com.android.providers.settings; import android.app.ActivityManagerNative; import android.app.IActivityManager; import android.app.backup.IBackupManager; +import android.content.ContentResolver; +import android.content.ContentValues; import android.content.Context; +import android.content.Intent; import android.content.res.Configuration; import android.location.LocationManager; import android.media.AudioManager; @@ -28,10 +31,12 @@ import android.net.Uri; import android.os.IPowerManager; import android.os.RemoteException; import android.os.ServiceManager; +import android.os.UserHandle; import android.os.UserManager; import android.provider.Settings; import android.telephony.TelephonyManager; import android.text.TextUtils; +import android.util.ArraySet; import java.util.Locale; @@ -41,6 +46,48 @@ public class SettingsHelper { private AudioManager mAudioManager; private TelephonyManager mTelephonyManager; + /** + * A few settings elements are special in that a restore of those values needs to + * be post-processed by relevant parts of the OS. A restore of any settings element + * mentioned in this table will therefore cause the system to send a broadcast with + * the {@link Intent#ACTION_SETTING_RESTORED} action, with extras naming the + * affected setting and supplying its pre-restore value for comparison. + * + * @see Intent#ACTION_SETTING_RESTORED + * @see System#SETTINGS_TO_BACKUP + * @see Secure#SETTINGS_TO_BACKUP + * @see Global#SETTINGS_TO_BACKUP + * + * {@hide} + */ + private static final ArraySet<String> sBroadcastOnRestore; + static { + sBroadcastOnRestore = new ArraySet<String>(1); + sBroadcastOnRestore.add(Settings.Secure.ENABLED_NOTIFICATION_LISTENERS); + } + + private interface SettingsLookup { + public String lookup(ContentResolver resolver, String name, int userHandle); + } + + private static SettingsLookup sSystemLookup = new SettingsLookup() { + public String lookup(ContentResolver resolver, String name, int userHandle) { + return Settings.System.getStringForUser(resolver, name, userHandle); + } + }; + + private static SettingsLookup sSecureLookup = new SettingsLookup() { + public String lookup(ContentResolver resolver, String name, int userHandle) { + return Settings.Secure.getStringForUser(resolver, name, userHandle); + } + }; + + private static SettingsLookup sGlobalLookup = new SettingsLookup() { + public String lookup(ContentResolver resolver, String name, int userHandle) { + return Settings.Global.getStringForUser(resolver, name, userHandle); + } + }; + public SettingsHelper(Context context) { mContext = context; mAudioManager = (AudioManager) context @@ -58,24 +105,67 @@ public class SettingsHelper { * some cases the data will be written by the call to the appropriate API, * and in some cases the property value needs to be modified before setting. */ - public boolean restoreValue(String name, String value) { - if (Settings.System.SCREEN_BRIGHTNESS.equals(name)) { - setBrightness(Integer.parseInt(value)); - } else if (Settings.System.SOUND_EFFECTS_ENABLED.equals(name)) { - setSoundEffects(Integer.parseInt(value) == 1); - } else if (Settings.Secure.LOCATION_PROVIDERS_ALLOWED.equals(name)) { - setGpsLocation(value); - return false; - } else if (Settings.Secure.BACKUP_AUTO_RESTORE.equals(name)) { - setAutoRestore(Integer.parseInt(value) == 1); - } else if (isAlreadyConfiguredCriticalAccessibilitySetting(name)) { - return false; - } else if (Settings.System.RINGTONE.equals(name) - || Settings.System.NOTIFICATION_SOUND.equals(name)) { - setRingtone(name, value); - return false; + public void restoreValue(Context context, ContentResolver cr, ContentValues contentValues, + Uri destination, String name, String value) { + // Will we need a post-restore broadcast for this element? + String oldValue = null; + boolean sendBroadcast = false; + final SettingsLookup table; + + if (destination.equals(Settings.Secure.CONTENT_URI)) { + table = sSecureLookup; + } else if (destination.equals(Settings.System.CONTENT_URI)) { + table = sSystemLookup; + } else { /* must be GLOBAL; this was preflighted by the caller */ + table = sGlobalLookup; + } + + if (sBroadcastOnRestore.contains(name)) { + oldValue = table.lookup(cr, name, UserHandle.USER_OWNER); + sendBroadcast = true; + } + + try { + if (Settings.System.SCREEN_BRIGHTNESS.equals(name)) { + setBrightness(Integer.parseInt(value)); + // fall through to the ordinary write to settings + } else if (Settings.System.SOUND_EFFECTS_ENABLED.equals(name)) { + setSoundEffects(Integer.parseInt(value) == 1); + // fall through to the ordinary write to settings + } else if (Settings.Secure.LOCATION_PROVIDERS_ALLOWED.equals(name)) { + setGpsLocation(value); + return; + } else if (Settings.Secure.BACKUP_AUTO_RESTORE.equals(name)) { + setAutoRestore(Integer.parseInt(value) == 1); + } else if (isAlreadyConfiguredCriticalAccessibilitySetting(name)) { + return; + } else if (Settings.System.RINGTONE.equals(name) + || Settings.System.NOTIFICATION_SOUND.equals(name)) { + setRingtone(name, value); + return; + } + + // Default case: write the restored value to settings + contentValues.clear(); + contentValues.put(Settings.NameValueTable.NAME, name); + contentValues.put(Settings.NameValueTable.VALUE, value); + cr.insert(destination, contentValues); + } catch (Exception e) { + // If we fail to apply the setting, by definition nothing happened + sendBroadcast = false; + } finally { + // If this was an element of interest, send the "we just restored it" + // broadcast with the historical value now that the new value has + // been committed and observers kicked off. + if (sendBroadcast) { + Intent intent = new Intent(Intent.ACTION_SETTING_RESTORED) + .setPackage("android").addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY) + .putExtra(Intent.EXTRA_SETTING_NAME, name) + .putExtra(Intent.EXTRA_SETTING_NEW_VALUE, value) + .putExtra(Intent.EXTRA_SETTING_PREVIOUS_VALUE, oldValue); + context.sendBroadcastAsUser(intent, UserHandle.OWNER, null); + } } - return true; } public String onBackupValue(String name, String value) { |