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
17package com.android.inputmethod.latin.settings;
18
19import android.content.Context;
20import android.preference.Preference;
21import android.util.AttributeSet;
22import android.view.View;
23import android.widget.RadioButton;
24
25import com.android.inputmethod.latin.R;
26
27/**
28 * Radio Button preference
29 */
30public 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            callListenerOnRadioButtonClicked();
47        }
48    };
49
50    public RadioButtonPreference(final Context context) {
51        this(context, null);
52    }
53
54    public RadioButtonPreference(final Context context, final AttributeSet attrs) {
55        this(context, attrs, android.R.attr.preferenceStyle);
56    }
57
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
64    public void setOnRadioButtonClickedListener(final OnRadioButtonClickedListener listener) {
65        mListener = listener;
66    }
67
68    void callListenerOnRadioButtonClicked() {
69        if (mListener != null) {
70            mListener.onRadioButtonClicked(this);
71        }
72    }
73
74    @Override
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
83    public boolean isSelected() {
84        return mIsSelected;
85    }
86
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