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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.android.apps.adk2.widget;
import android.content.Context;
import android.content.res.TypedArray;
import android.preference.Preference;
import android.util.AttributeSet;
import android.view.View;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import com.google.android.apps.adk2.R;
public class SeekBarPreference extends Preference implements OnSeekBarChangeListener {
private int mMax;
private int mValue;
private boolean mTrackingTouch;
public SeekBarPreference(Context context) {
this(context, null);
}
public SeekBarPreference(Context context, AttributeSet attrs) {
this(context, attrs, android.R.attr.preferenceStyle);
}
public SeekBarPreference(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.SeekBarPreference, defStyle, 0);
mMax = a.getInteger(R.styleable.SeekBarPreference_max, 0);
a.recycle();
setLayoutResource(R.layout.seekbar_preference);
}
@Override
protected void onBindView(View view) {
super.onBindView(view);
SeekBar seekBar = (SeekBar)view.findViewById(R.id.seekbar);
seekBar.setMax(mMax);
seekBar.setProgress(mValue);
seekBar.setEnabled(isEnabled());
seekBar.setOnSeekBarChangeListener(this);
}
@Override
protected void onSetInitialValue(boolean restoreValue, Object defaultValue) {
setValue(restoreValue ? getPersistedInt(0) : (Integer)defaultValue);
}
@Override
protected Object onGetDefaultValue(TypedArray a, int index) {
return a.getInt(index, 0);
}
public void setValue(int value) {
if (value > mMax) value = mMax;
if (value < 0) value = 0;
if (value != mValue) {
mValue = value;
persistInt(value);
if (!mTrackingTouch)
notifyChanged();
}
}
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
if (progress != mValue) {
if (callChangeListener(progress)) {
setValue(progress);
} else {
seekBar.setProgress(progress);
}
}
}
public void onStartTrackingTouch(SeekBar seekBar) {
mTrackingTouch = true;
}
public void onStopTrackingTouch(SeekBar seekBar) {
mTrackingTouch = false;
}
}
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