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package juloo.common;
import android.content.Context;
import android.content.res.TypedArray;
import android.preference.DialogPreference;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.SeekBar;
/*
** SideBarPreference
** -
** Open a dialog showing a seekbar
** -
** xml attrs:
** android:defaultValue Default value (float)
** min min value (float)
** max max value (float)
** -
** Summary field allow to show the current value using %f or %s flag
*/
public class SlideBarPreference extends DialogPreference
implements SeekBar.OnSeekBarChangeListener
{
private static final int STEPS = 100;
private LinearLayout _layout;
private TextView _textView;
private SeekBar _seekBar;
private float _min;
private float _max;
private float _value;
private String _initialSummary;
public SlideBarPreference(Context context, AttributeSet attrs)
{
super(context, attrs);
_initialSummary = getSummary().toString();
_textView = new TextView(context);
_textView.setPadding(48, 40, 48, 40);
_seekBar = new SeekBar(context);
_seekBar.setOnSeekBarChangeListener(this);
_seekBar.setMax(STEPS);
_min = float_of_string(attrs.getAttributeValue(null, "min"));
_value = _min;
_max = Math.max(1f, float_of_string(attrs.getAttributeValue(null, "max")));
_layout = new LinearLayout(getContext());
_layout.setOrientation(LinearLayout.VERTICAL);
_layout.addView(_textView);
_layout.addView(_seekBar);
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
{
_value = Math.round(progress * (_max - _min)) / (float)STEPS + _min;
updateText();
}
@Override
public void onStartTrackingTouch(SeekBar seekBar)
{
}
@Override
public void onStopTrackingTouch(SeekBar seekBar)
{
}
@Override
protected void onSetInitialValue(boolean restorePersistedValue, Object defaultValue)
{
if (restorePersistedValue)
{
_value = getPersistedFloat(_min);
}
else
{
_value = (Float)defaultValue;
persistFloat(_value);
}
_seekBar.setProgress((int)((_value - _min) * STEPS / (_max - _min)));
updateText();
}
@Override
protected Object onGetDefaultValue(TypedArray a, int index)
{
return (a.getFloat(index, _min));
}
@Override
protected void onDialogClosed(boolean positiveResult)
{
if (positiveResult)
persistFloat(_value);
}
protected View onCreateDialogView()
{
ViewGroup parent = (ViewGroup)_layout.getParent();
if (parent != null)
parent.removeView(_layout);
return (_layout);
}
private void updateText()
{
String f = String.format(_initialSummary, _value);
_textView.setText(f);
setSummary(f);
}
private static float float_of_string(String str)
{
if (str == null)
return (0f);
return (Float.parseFloat(str));
}
}
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