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      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 
     17 package com.replica.replicaisland;
     18 
     19 import android.util.AttributeSet;
     20 import android.view.View;
     21 import android.widget.SeekBar;
     22 import android.widget.TextView;
     23 import android.widget.SeekBar.OnSeekBarChangeListener;
     24 import android.content.Context;
     25 import android.content.res.TypedArray;
     26 import android.preference.Preference;
     27 
     28 public 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 }