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          */
onRadioButtonClicked(RadioButtonPreference preference)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             callListenerOnRadioButtonClicked();
47         }
48     };
49 
RadioButtonPreference(final Context context)50     public RadioButtonPreference(final Context context) {
51         this(context, null);
52     }
53 
RadioButtonPreference(final Context context, final AttributeSet attrs)54     public RadioButtonPreference(final Context context, final AttributeSet attrs) {
55         this(context, attrs, android.R.attr.preferenceStyle);
56     }
57 
RadioButtonPreference(final Context context, final AttributeSet attrs, final int defStyleAttr)58     public RadioButtonPreference(final Context context, final AttributeSet attrs,
59             final int defStyleAttr) {
60         super(context, attrs, defStyleAttr);
61         setWidgetLayoutResource(R.layout.radio_button_preference_widget);
62     }
63 
setOnRadioButtonClickedListener(final OnRadioButtonClickedListener listener)64     public void setOnRadioButtonClickedListener(final OnRadioButtonClickedListener listener) {
65         mListener = listener;
66     }
67 
callListenerOnRadioButtonClicked()68     void callListenerOnRadioButtonClicked() {
69         if (mListener != null) {
70             mListener.onRadioButtonClicked(this);
71         }
72     }
73 
74     @Override
onBindView(final View view)75     protected void onBindView(final View view) {
76         super.onBindView(view);
77         mRadioButton = (RadioButton)view.findViewById(R.id.radio_button);
78         mRadioButton.setChecked(mIsSelected);
79         mRadioButton.setOnClickListener(mClickListener);
80         view.setOnClickListener(mClickListener);
81     }
82 
isSelected()83     public boolean isSelected() {
84         return mIsSelected;
85     }
86 
setSelected(final boolean selected)87     public void setSelected(final boolean selected) {
88         if (selected == mIsSelected) {
89             return;
90         }
91         mIsSelected = selected;
92         if (mRadioButton != null) {
93             mRadioButton.setChecked(selected);
94         }
95         notifyChanged();
96     }
97 }
98