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      1 /*
      2  * Copyright (C) 2018 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.content.res.TypedArray;
     21 import android.support.annotation.VisibleForTesting;
     22 import android.support.v4.content.res.TypedArrayUtils;
     23 import android.util.AttributeSet;
     24 import android.view.View;
     25 import android.widget.Button;
     26 
     27 import com.android.settings.R;
     28 import com.android.settings.applications.LayoutPreference;
     29 
     30 /**
     31  * Preference that presents a button with two states(On vs Off)
     32  */
     33 public class TwoStateButtonPreference extends LayoutPreference implements
     34         View.OnClickListener {
     35 
     36     private boolean mIsChecked;
     37     private final Button mButtonOn;
     38     private final Button mButtonOff;
     39 
     40     public TwoStateButtonPreference(Context context, AttributeSet attrs) {
     41         super(context, attrs, TypedArrayUtils.getAttr(
     42                 context, R.attr.twoStateButtonPreferenceStyle, android.R.attr.preferenceStyle));
     43 
     44         if (attrs == null) {
     45             mButtonOn = null;
     46             mButtonOff = null;
     47         } else {
     48             final TypedArray styledAttrs = context.obtainStyledAttributes(attrs,
     49                     R.styleable.TwoStateButtonPreference);
     50             final int textOnId = styledAttrs.getResourceId(
     51                     R.styleable.TwoStateButtonPreference_textOn,
     52                     R.string.summary_placeholder);
     53             final int textOffId = styledAttrs.getResourceId(
     54                     R.styleable.TwoStateButtonPreference_textOff,
     55                     R.string.summary_placeholder);
     56             styledAttrs.recycle();
     57 
     58             mButtonOn = findViewById(R.id.state_on_button);
     59             mButtonOn.setText(textOnId);
     60             mButtonOn.setOnClickListener(this);
     61             mButtonOff = findViewById(R.id.state_off_button);
     62             mButtonOff.setText(textOffId);
     63             mButtonOff.setOnClickListener(this);
     64             setChecked(isChecked());
     65         }
     66     }
     67 
     68     @Override
     69     public void onClick(View v) {
     70         final boolean stateOn = v.getId() == R.id.state_on_button;
     71         setChecked(stateOn);
     72         callChangeListener(stateOn);
     73     }
     74 
     75     public void setChecked(boolean checked) {
     76         // Update state
     77         mIsChecked = checked;
     78         // And update UI
     79         if (checked) {
     80             mButtonOn.setVisibility(View.GONE);
     81             mButtonOff.setVisibility(View.VISIBLE);
     82         } else {
     83             mButtonOn.setVisibility(View.VISIBLE);
     84             mButtonOff.setVisibility(View.GONE);
     85         }
     86     }
     87 
     88     public boolean isChecked() {
     89         return mIsChecked;
     90     }
     91 
     92     public void setButtonEnabled(boolean enabled) {
     93         mButtonOn.setEnabled(enabled);
     94         mButtonOff.setEnabled(enabled);
     95     }
     96 
     97     @VisibleForTesting
     98     public Button getStateOnButton() {
     99         return mButtonOn;
    100     }
    101 
    102     @VisibleForTesting
    103     public Button getStateOffButton() {
    104         return mButtonOff;
    105     }
    106 }