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      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.settings.vpn2;
     18 
     19 import android.content.Context;
     20 import android.content.res.Resources;
     21 import android.os.UserHandle;
     22 import android.os.UserManager;
     23 import android.text.TextUtils;
     24 import android.util.AttributeSet;
     25 
     26 import com.android.settings.widget.GearPreference;
     27 import com.android.settings.R;
     28 
     29 /**
     30  * This class sets appropriate enabled state and user admin message when userId is set
     31  */
     32 public abstract class ManageablePreference extends GearPreference {
     33 
     34     public static int STATE_NONE = -1;
     35 
     36     boolean mIsAlwaysOn = false;
     37     int mState = STATE_NONE;
     38     int mUserId;
     39 
     40     public ManageablePreference(Context context, AttributeSet attrs) {
     41         super(context, attrs);
     42         setPersistent(false);
     43         setOrder(0);
     44         setUserId(UserHandle.myUserId());
     45     }
     46 
     47     public int getUserId() {
     48         return mUserId;
     49     }
     50 
     51     public void setUserId(int userId) {
     52         mUserId = userId;
     53         checkRestrictionAndSetDisabled(UserManager.DISALLOW_CONFIG_VPN, userId);
     54     }
     55 
     56     public boolean isAlwaysOn() {
     57         return mIsAlwaysOn;
     58     }
     59 
     60     public int getState() {
     61         return mState;
     62     }
     63 
     64     public void setState(int state) {
     65         if (mState != state) {
     66             mState = state;
     67             updateSummary();
     68             notifyHierarchyChanged();
     69         }
     70     }
     71 
     72     public void setAlwaysOn(boolean isEnabled) {
     73         if (mIsAlwaysOn != isEnabled) {
     74             mIsAlwaysOn = isEnabled;
     75             updateSummary();
     76         }
     77     }
     78 
     79     /**
     80      * Update the preference summary string (see {@see Preference#setSummary}) with a string
     81      * reflecting connection status and always-on setting.
     82      *
     83      * State is not shown for {@code STATE_NONE}.
     84      */
     85     protected void updateSummary() {
     86         final Resources res = getContext().getResources();
     87         final String[] states = res.getStringArray(R.array.vpn_states);
     88         String summary = (mState == STATE_NONE ? "" : states[mState]);
     89         if (mIsAlwaysOn) {
     90             final String alwaysOnString = res.getString(R.string.vpn_always_on_summary_active);
     91             summary = TextUtils.isEmpty(summary) ? alwaysOnString : res.getString(
     92                     R.string.join_two_unrelated_items, summary, alwaysOnString);
     93         }
     94         setSummary(summary);
     95     }
     96 }
     97