am 8f5c0e46: Merge "Bring screen lock setting back to screen pinning" into lmp-mr1-dev

* commit '8f5c0e4660629546fb651e8bc739677a60ad3302':
  Bring screen lock setting back to screen pinning

res/values/strings.xml

@@ -5903,6 +5903,14 @@
     <string name="screen_pinning_title">Screen pinning</string>
     <!-- [CHAR LIMIT=300] Screen pinning description -->
     <string name="screen_pinning_description">When turned on, you can use screen pinning to keep the current screen in view until you unpin.\n\nTo use screen pinning:\n\n1. Make sure screen pinning is turned on.\n\n2. Open the screen you want to pin.\n\n3. Touch Overview.\n\n4. Touch the pin icon.</string>
+    <!-- [CHAR LIMIT=60] Unlock setting for screen pinning -->
+    <string name="screen_pinning_unlock_pattern">Ask for unlock pattern before unpinning</string>
+    <!-- [CHAR LIMIT=60] Unlock setting for screen pinning -->
+    <string name="screen_pinning_unlock_pin">Ask for PIN before unpinning</string>
+    <!-- [CHAR LIMIT=60] Unlock setting for screen pinning -->
+    <string name="screen_pinning_unlock_password">Ask for password before unpinning</string>
+    <!-- [CHAR LIMIT=60] Unlock setting for screen pinning -->
+    <string name="screen_pinning_unlock_none">Lock device when unpinning</string>
 
     <!-- Title for a work profile. [CHAR LIMIT=25] -->
     <string name="managed_user_title">Work profile</string>

res/xml/screen_pinning_settings.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2014 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.
+-->
+
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
+        android:title="@string/screen_pinning_title">
+
+        <SwitchPreference
+                android:key="use_screen_lock"
+                android:title="@string/screen_pinning_unlock_none"
+                android:persistent="false" />
+
+</PreferenceScreen>

src/com/android/settings/ScreenPinningSettings.java

@@ -15,42 +15,59 @@
  */
 package com.android.settings;
 
-import java.util.ArrayList;
+import android.app.admin.DevicePolicyManager;
-import java.util.List;
-
 import android.content.Context;
+import android.content.Intent;
 import android.content.res.Resources;
 import android.os.Bundle;
+import android.preference.Preference;
+import android.preference.Preference.OnPreferenceChangeListener;
+import android.preference.PreferenceScreen;
+import android.preference.SwitchPreference;
 import android.provider.Settings;
-import android.provider.Settings.SettingNotFoundException;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.Switch;
 
+import com.android.internal.widget.LockPatternUtils;
 import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settings.search.Indexable;
 import com.android.settings.search.SearchIndexableRaw;
 import com.android.settings.widget.SwitchBar;
 
+import java.util.ArrayList;
+import java.util.List;
+
 /**
  * Screen pinning settings.
  */
 public class ScreenPinningSettings extends SettingsPreferenceFragment
         implements SwitchBar.OnSwitchChangeListener, Indexable {
 
+    private static final CharSequence KEY_USE_SCREEN_LOCK = "use_screen_lock";
+    private static final int CHANGE_LOCK_METHOD_REQUEST = 43;
+
     private SwitchBar mSwitchBar;
+    private SwitchPreference mUseScreenLock;
+    private LockPatternUtils mLockPatternUtils;
 
     @Override
     public void onActivityCreated(Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
 
         final SettingsActivity activity = (SettingsActivity) getActivity();
+        mLockPatternUtils = new LockPatternUtils(activity);
+
+        View emptyView = LayoutInflater.from(activity)
+                .inflate(R.layout.screen_pinning_instructions, null);
+        ((ViewGroup) getListView().getParent()).addView(emptyView);
+        getListView().setEmptyView(emptyView);
 
         mSwitchBar = activity.getSwitchBar();
         mSwitchBar.addOnSwitchChangeListener(this);
         mSwitchBar.show();
-        mSwitchBar.setChecked(isLockToAppEnabled());
+        mSwitchBar.setChecked(isLockToAppEnabled(getActivity()));
     }
 
     @Override
@@ -61,19 +78,9 @@ public class ScreenPinningSettings extends SettingsPreferenceFragment
         mSwitchBar.hide();
     }
 
-    @Override
+    private static boolean isLockToAppEnabled(Context context) {
-    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+        return Settings.System.getInt(context.getContentResolver(),
-            Bundle savedInstanceState) {
+                Settings.System.LOCK_TO_APP_ENABLED, 0) != 0;
-        return inflater.inflate(R.layout.screen_pinning_instructions, null);
-    }
-
-    private boolean isLockToAppEnabled() {
-        try {
-            return Settings.System.getInt(getContentResolver(), Settings.System.LOCK_TO_APP_ENABLED)
-                != 0;
-        } catch (SettingNotFoundException e) {
-            return false;
-        }
     }
 
     private void setLockToAppEnabled(boolean isEnabled) {
@@ -81,12 +88,89 @@ public class ScreenPinningSettings extends SettingsPreferenceFragment
                 isEnabled ? 1 : 0);
     }
 
+    private boolean isScreenLockUsed() {
+        int def = getCurrentSecurityTitle() != R.string.screen_pinning_unlock_none ? 1 : 0;
+        return Settings.Secure.getInt(getContentResolver(),
+                Settings.Secure.LOCK_TO_APP_EXIT_LOCKED, def) != 0;
+    }
+
+    private boolean setScreenLockUsed(boolean isEnabled) {
+        if (isEnabled) {
+            LockPatternUtils lockPatternUtils = new LockPatternUtils(getActivity());
+            if (lockPatternUtils.getKeyguardStoredPasswordQuality()
+                    == DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED) {
+                Intent chooseLockIntent = new Intent(DevicePolicyManager.ACTION_SET_NEW_PASSWORD);
+                chooseLockIntent.putExtra(
+                        ChooseLockGeneric.ChooseLockGenericFragment.MINIMUM_QUALITY_KEY,
+                        DevicePolicyManager.PASSWORD_QUALITY_SOMETHING);
+                startActivityForResult(chooseLockIntent, CHANGE_LOCK_METHOD_REQUEST);
+                return false;
+            }
+        }
+        Settings.Secure.putInt(getContentResolver(), Settings.Secure.LOCK_TO_APP_EXIT_LOCKED,
+                isEnabled ? 1 : 0);
+        return true;
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        if (requestCode == CHANGE_LOCK_METHOD_REQUEST) {
+            LockPatternUtils lockPatternUtils = new LockPatternUtils(getActivity());
+            boolean validPassQuality = lockPatternUtils.getKeyguardStoredPasswordQuality()
+                    != DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED;
+            setScreenLockUsed(validPassQuality);
+            // Make sure the screen updates.
+            mUseScreenLock.setChecked(validPassQuality);
+        }
+    }
+
+    private int getCurrentSecurityTitle() {
+        int quality = mLockPatternUtils.getKeyguardStoredPasswordQuality();
+        switch (quality) {
+            case DevicePolicyManager.PASSWORD_QUALITY_NUMERIC:
+            case DevicePolicyManager.PASSWORD_QUALITY_NUMERIC_COMPLEX:
+                return R.string.screen_pinning_unlock_pin;
+            case DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC:
+            case DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC:
+            case DevicePolicyManager.PASSWORD_QUALITY_COMPLEX:
+                return R.string.screen_pinning_unlock_password;
+            case DevicePolicyManager.PASSWORD_QUALITY_SOMETHING:
+                if (mLockPatternUtils.isLockPatternEnabled()) {
+                    return R.string.screen_pinning_unlock_pattern;
+                }
+        }
+        return R.string.screen_pinning_unlock_none;
+    }
+
     /**
      * Listens to the state change of the lock-to-app master switch.
      */
     @Override
     public void onSwitchChanged(Switch switchView, boolean isChecked) {
         setLockToAppEnabled(isChecked);
+        updateDisplay();
+    }
+
+    public void updateDisplay() {
+        PreferenceScreen root = getPreferenceScreen();
+        if (root != null) {
+            root.removeAll();
+        }
+        if (isLockToAppEnabled(getActivity())) {
+            addPreferencesFromResource(R.xml.screen_pinning_settings);
+            root = getPreferenceScreen();
+
+            mUseScreenLock = (SwitchPreference) root.findPreference(KEY_USE_SCREEN_LOCK);
+            mUseScreenLock.setOnPreferenceChangeListener(new OnPreferenceChangeListener() {
+                @Override
+                public boolean onPreferenceChange(Preference preference, Object newValue) {
+                    return setScreenLockUsed((boolean) newValue);
+                }
+            });
+            mUseScreenLock.setChecked(isScreenLockUsed());
+            mUseScreenLock.setTitle(getCurrentSecurityTitle());
+        }
     }
 
     /**
@@ -106,11 +190,19 @@ public class ScreenPinningSettings extends SettingsPreferenceFragment
                 data.screenTitle = res.getString(R.string.screen_pinning_title);
                 result.add(data);
 
+                if (isLockToAppEnabled(context)) {
+                    // Screen lock option
+                    data = new SearchIndexableRaw(context);
+                    data.title = res.getString(R.string.screen_pinning_unlock_none);
+                    data.screenTitle = res.getString(R.string.screen_pinning_title);
+                    result.add(data);
+                } else {
                     // Screen pinning description.
                     data = new SearchIndexableRaw(context);
                     data.title = res.getString(R.string.screen_pinning_description);
                     data.screenTitle = res.getString(R.string.screen_pinning_title);
                     result.add(data);
+                }
 
                 return result;
             }