1/*
2 * Copyright (C) 2010 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.replica.replicaisland;
18
19import android.util.AttributeSet;
20import android.view.View;
21import android.widget.SeekBar;
22import android.widget.TextView;
23import android.widget.SeekBar.OnSeekBarChangeListener;
24import android.content.Context;
25import android.content.res.TypedArray;
26import android.preference.Preference;
27
28public class SliderPreference extends Preference implements OnSeekBarChangeListener {
29	private final static int MAX_SLIDER_VALUE = 100;
30	private final static int INITIAL_VALUE = 50;
31
32	private int mValue = INITIAL_VALUE;
33	private String mMinText;
34	private String mMaxText;
35
36
37	public SliderPreference(Context context) {
38		super(context);
39
40		setWidgetLayoutResource(R.layout.slider_preference);
41	}
42
43	public SliderPreference(Context context, AttributeSet attrs) {
44		this(context, attrs, android.R.attr.preferenceStyle);
45
46		setWidgetLayoutResource(R.layout.slider_preference);
47	}
48
49	public SliderPreference(Context context, AttributeSet attrs, int defStyle) {
50		super(context, attrs, defStyle);
51
52		TypedArray a = context.obtainStyledAttributes(attrs,
53                R.styleable.SliderPreference, defStyle, 0);
54		mMinText = a.getString(R.styleable.SliderPreference_minText);
55		mMaxText = a.getString(R.styleable.SliderPreference_maxText);
56
57        a.recycle();
58
59        setWidgetLayoutResource(R.layout.slider_preference);
60	}
61
62	@Override
63	protected void onBindView(View view) {
64		super.onBindView(view);
65
66		if (mMinText != null) {
67			TextView minText = (TextView)view.findViewById(R.id.min);
68			minText.setText(mMinText);
69		}
70
71		if (mMaxText != null) {
72			TextView maxText = (TextView)view.findViewById(R.id.max);
73			maxText.setText(mMaxText);
74		}
75
76		SeekBar bar = (SeekBar)view.findViewById(R.id.slider);
77		bar.setMax(MAX_SLIDER_VALUE);
78		bar.setProgress(mValue);
79		bar.setOnSeekBarChangeListener(this);
80	}
81
82	public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
83		if (fromUser) {
84			mValue = progress;
85			persistInt(mValue);
86		}
87	}
88
89	public void onStartTrackingTouch(SeekBar seekBar) {
90	}
91
92	public void onStopTrackingTouch(SeekBar seekBar) {
93	}
94
95
96	@Override
97	protected Object onGetDefaultValue(TypedArray ta,int index) {
98		int dValue = (int)ta.getInt(index, INITIAL_VALUE);
99
100		return (int)Utils.clamp(dValue, 0, MAX_SLIDER_VALUE);
101	}
102
103
104	@Override
105	protected void onSetInitialValue(boolean restoreValue, Object defaultValue) {
106		mValue = defaultValue != null ? (Integer)defaultValue : INITIAL_VALUE;
107
108		if (!restoreValue) {
109			persistInt(mValue);
110		} else {
111			mValue = getPersistedInt(mValue);
112		}
113	}
114
115
116}