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      1 /*
      2  * Copyright (C) 2017 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.widget;
     18 
     19 import android.content.Context;
     20 import android.support.v7.preference.PreferenceViewHolder;
     21 import android.util.AttributeSet;
     22 import android.view.View;
     23 import android.view.View.OnClickListener;
     24 import android.widget.Switch;
     25 import android.widget.TextView;
     26 
     27 import com.android.settings.R;
     28 import com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
     29 import com.android.settingslib.TwoTargetPreference;
     30 
     31 /**
     32  * A custom preference that provides inline switch toggle. It has a mandatory field for title, and
     33  * optional fields for icon and sub-text.
     34  */
     35 public class MasterSwitchPreference extends TwoTargetPreference {
     36 
     37     private Switch mSwitch;
     38     private boolean mChecked;
     39     private boolean mEnableSwitch = true;
     40 
     41     public MasterSwitchPreference(Context context, AttributeSet attrs,
     42             int defStyleAttr, int defStyleRes) {
     43         super(context, attrs, defStyleAttr, defStyleRes);
     44     }
     45 
     46     public MasterSwitchPreference(Context context, AttributeSet attrs, int defStyleAttr) {
     47         super(context, attrs, defStyleAttr);
     48     }
     49 
     50     public MasterSwitchPreference(Context context, AttributeSet attrs) {
     51         super(context, attrs);
     52     }
     53 
     54     public MasterSwitchPreference(Context context) {
     55         super(context);
     56     }
     57 
     58     @Override
     59     protected int getSecondTargetResId() {
     60         return R.layout.preference_widget_master_switch;
     61     }
     62 
     63     @Override
     64     public void onBindViewHolder(PreferenceViewHolder holder) {
     65         super.onBindViewHolder(holder);
     66         final View widgetView = holder.findViewById(android.R.id.widget_frame);
     67         if (widgetView != null) {
     68             widgetView.setOnClickListener(new OnClickListener() {
     69                 @Override
     70                 public void onClick(View v) {
     71                     if (mSwitch != null && !mSwitch.isEnabled()) {
     72                         return;
     73                     }
     74                     setChecked(!mChecked);
     75                     if (!callChangeListener(mChecked)) {
     76                         setChecked(!mChecked);
     77                     } else {
     78                         persistBoolean(mChecked);
     79                     }
     80                 }
     81             });
     82         }
     83 
     84         mSwitch = (Switch) holder.findViewById(R.id.switchWidget);
     85         if (mSwitch != null) {
     86             mSwitch.setContentDescription(getTitle());
     87             mSwitch.setChecked(mChecked);
     88             mSwitch.setEnabled(mEnableSwitch);
     89         }
     90     }
     91 
     92     public boolean isChecked() {
     93         return mSwitch != null && mSwitch.isEnabled() && mChecked;
     94     }
     95 
     96     public void setChecked(boolean checked) {
     97         mChecked = checked;
     98         if (mSwitch != null) {
     99             mSwitch.setChecked(checked);
    100         }
    101     }
    102 
    103     public void setSwitchEnabled(boolean enabled) {
    104         mEnableSwitch = enabled;
    105         if (mSwitch != null) {
    106             mSwitch.setEnabled(enabled);
    107         }
    108     }
    109 
    110     /**
    111      * If admin is not null, disables the switch.
    112      * Otherwise, keep it enabled.
    113      */
    114     public void setDisabledByAdmin(EnforcedAdmin admin) {
    115         setSwitchEnabled(admin == null);
    116     }
    117 
    118     public Switch getSwitch() {
    119         return mSwitch;
    120     }
    121 }
    122