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: I25f0756ac72227e13dcb491694b3ec3c2bf1d293

1 files changed, 23 insertions, 0 deletions

diff --git a/src/com/android/settings/SecuritySettings.java b/src/com/android/settings/SecuritySettings.java
index f893c3645..df49cec3d 100644
--- a/src/com/android/settings/SecuritySettings.java
+++ b/src/com/android/settings/SecuritySettings.java
@@ -65,6 +65,8 @@ public class SecuritySettings extends RestrictedSettingsFragment
     private static final String KEY_DEVICE_ADMIN_CATEGORY = "device_admin_category";
     private static final String KEY_LOCK_AFTER_TIMEOUT = "lock_after_timeout";
     private static final String KEY_OWNER_INFO_SETTINGS = "owner_info_settings";
+    private static final String KEY_ENABLE_WIDGETS = "keyguard_enable_widgets";
+
     private static final int SET_OR_CHANGE_LOCK_METHOD_REQUEST = 123;
     private static final int CONFIRM_EXISTING_FOR_BIOMETRIC_WEAK_IMPROVE_REQUEST = 124;
     private static final int CONFIRM_EXISTING_FOR_BIOMETRIC_WEAK_LIVELINESS_OFF = 125;
@@ -101,6 +103,7 @@ public class SecuritySettings extends RestrictedSettingsFragment
     private DialogInterface mWarnInstallApps;
     private CheckBoxPreference mToggleVerifyApps;
     private CheckBoxPreference mPowerButtonInstantlyLocks;
+    private CheckBoxPreference mEnableKeyguardWidgets;
 
     private Preference mNotificationAccess;
 
@@ -241,6 +244,20 @@ public class SecuritySettings extends RestrictedSettingsFragment
             }
         }
 
+        // Enable or disable keyguard widget checkbox based on DPM state
+        mEnableKeyguardWidgets = (CheckBoxPreference) root.findPreference(KEY_ENABLE_WIDGETS);
+        if (mEnableKeyguardWidgets != null) {
+            final boolean disabled = (0 != (mDPM.getKeyguardDisabledFeatures(null)
+                    & DevicePolicyManager.KEYGUARD_DISABLE_WIDGETS_ALL));
+            if (disabled) {
+                mEnableKeyguardWidgets.setSummary(
+                        R.string.security_enable_widgets_disabled_summary);
+            } else {
+                mEnableKeyguardWidgets.setSummary("");
+            }
+            mEnableKeyguardWidgets.setEnabled(!disabled);
+        }
+
         // Show password
         mShowPassword = (CheckBoxPreference) root.findPreference(KEY_SHOW_PASSWORD);
         mResetCredentials = root.findPreference(KEY_RESET_CREDENTIALS);
@@ -477,6 +494,10 @@ public class SecuritySettings extends RestrictedSettingsFragment
         if (mResetCredentials != null) {
             mResetCredentials.setEnabled(!mKeyStore.isEmpty());
         }
+
+        if (mEnableKeyguardWidgets != null) {
+            mEnableKeyguardWidgets.setChecked(lockPatternUtils.getWidgetsEnabled());
+        }
     }
 
     @Override
@@ -527,6 +548,8 @@ public class SecuritySettings extends RestrictedSettingsFragment
             lockPatternUtils.setVisiblePatternEnabled(isToggled(preference));
         } else if (KEY_POWER_INSTANTLY_LOCKS.equals(key)) {
             lockPatternUtils.setPowerButtonInstantlyLocks(isToggled(preference));
+        } else if (KEY_ENABLE_WIDGETS.equals(key)) {
+            lockPatternUtils.setWidgetsEnabled(mEnableKeyguardWidgets.isChecked());
         } else if (preference == mShowPassword) {
             Settings.System.putInt(getContentResolver(), Settings.System.TEXT_SHOW_PASSWORD,
                     mShowPassword.isChecked() ? 1 : 0);