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      1 /*
      2  * Copyright (C) 2014 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.inputmethod.latin.settings;
     18 
     19 import android.content.Context;
     20 import android.preference.Preference;
     21 import android.util.AttributeSet;
     22 import android.view.View;
     23 import android.widget.RadioButton;
     24 
     25 import com.android.inputmethod.latin.R;
     26 
     27 /**
     28  * Radio Button preference
     29  */
     30 public class RadioButtonPreference extends Preference {
     31     interface OnRadioButtonClickedListener {
     32         /**
     33          * Called when this preference needs to be saved its state.
     34          *
     35          * @param preference This preference.
     36          */
     37         public void onRadioButtonClicked(RadioButtonPreference preference);
     38     }
     39 
     40     private boolean mIsSelected;
     41     private RadioButton mRadioButton;
     42     private OnRadioButtonClickedListener mListener;
     43     private final View.OnClickListener mClickListener = new View.OnClickListener() {
     44         @Override
     45         public void onClick(final View v) {
     46             if (mListener != null) {
     47                 mListener.onRadioButtonClicked(RadioButtonPreference.this);
     48             }
     49         }
     50     };
     51 
     52     public RadioButtonPreference(final Context context) {
     53         this(context, null);
     54     }
     55 
     56     public RadioButtonPreference(final Context context, final AttributeSet attrs) {
     57         this(context, attrs, android.R.attr.preferenceStyle);
     58     }
     59 
     60     public RadioButtonPreference(final Context context, final AttributeSet attrs,
     61             final int defStyleAttr) {
     62         super(context, attrs, defStyleAttr);
     63         setWidgetLayoutResource(R.layout.radio_button_preference_widget);
     64     }
     65 
     66     public void setOnRadioButtonClickedListener(final OnRadioButtonClickedListener listener) {
     67         mListener = listener;
     68     }
     69 
     70     @Override
     71     protected void onBindView(final View view) {
     72         super.onBindView(view);
     73         mRadioButton = (RadioButton)view.findViewById(R.id.radio_button);
     74         mRadioButton.setChecked(mIsSelected);
     75         mRadioButton.setOnClickListener(mClickListener);
     76         view.setOnClickListener(mClickListener);
     77     }
     78 
     79     public boolean isSelected() {
     80         return mIsSelected;
     81     }
     82 
     83     public void setSelected(final boolean selected) {
     84         if (selected == mIsSelected) {
     85             return;
     86         }
     87         mIsSelected = selected;
     88         if (mRadioButton != null) {
     89             mRadioButton.setChecked(selected);
     90         }
     91         notifyChanged();
     92     }
     93 }
     94