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package james.dsp.preference;
import android.content.Context;
import android.content.res.TypedArray;
import android.preference.Preference;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewParent;
import android.widget.RelativeLayout;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;
import james.dsp.R;
public class SeekBarPreference extends Preference implements OnSeekBarChangeListener
{
private static final String ANDROIDNS =
"http://schemas.android.com/apk/res/android";
private static final String DSP =
"http://schemas.android.com/apk/res/james.dsp";
private static final int DEFAULT_VALUE = 50;
private int mMaxValue = 100;
private int mMinValue = 0;
private int mInterval = 1;
private int mCurrentValue;
private String mUnitsLeft = "";
private String mUnitsRight = "";
private SeekBar mSeekBar;
private TextView mTitle;
private TextView mStatusText;
public SeekBarPreference(Context context, AttributeSet attrs)
{
super(context, attrs);
initPreference(context, attrs);
}
public SeekBarPreference(Context context, AttributeSet attrs, int defStyle)
{
super(context, attrs, defStyle);
initPreference(context, attrs);
}
private void initPreference(Context context, AttributeSet attrs)
{
setValuesFromXml(attrs);
mSeekBar = new SeekBar(context, attrs);
mSeekBar.setMax(mMaxValue - mMinValue);
mSeekBar.setOnSeekBarChangeListener(this);
}
private void setValuesFromXml(AttributeSet attrs)
{
mMaxValue = attrs.getAttributeIntValue(ANDROIDNS, "max", 100);
mMinValue = attrs.getAttributeIntValue(DSP, "min", 0);
mUnitsLeft = getAttributeStringValue(attrs, DSP, "unitsLeft", "");
String units = getAttributeStringValue(attrs, DSP, "units", "");
mUnitsRight = getAttributeStringValue(attrs, DSP, "unitsRight", units);
try
{
String newInterval = attrs.getAttributeValue(DSP, "interval");
if (newInterval != null)
mInterval = Integer.parseInt(newInterval);
}
catch (Exception e)
{
}
}
private String getAttributeStringValue(AttributeSet attrs, String namespace, String name, String defaultValue)
{
String value = attrs.getAttributeValue(namespace, name);
if (value == null)
value = defaultValue;
return value;
}
@Override
public void onDependencyChanged(Preference dependency, boolean disableDependent)
{
super.onDependencyChanged(dependency, disableDependent);
this.setShouldDisableView(true);
if (mTitle != null)
mTitle.setEnabled(!disableDependent);
if (mSeekBar != null)
mSeekBar.setEnabled(!disableDependent);
}
@Override
protected View onCreateView(ViewGroup parent)
{
super.onCreateView(parent);
RelativeLayout layout = null;
try {
LayoutInflater mInflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
layout = (RelativeLayout) mInflater.inflate(R.layout.seek_bar_preference, parent, false);
mTitle = layout.findViewById(android.R.id.title);
} catch (Exception e) {
}
return layout;
}
@Override
public void onBindView(View view)
{
super.onBindView(view);
try
{
// move our seekbar to the new view we've been given
ViewParent oldContainer = mSeekBar.getParent();
ViewGroup newContainer = view.findViewById(R.id.seekBarPrefBarContainer);
if (oldContainer != newContainer)
{
// remove the seekbar from the old view
if (oldContainer != null)
((ViewGroup) oldContainer).removeView(mSeekBar);
// remove the existing seekbar (there may not be one) and add ours
newContainer.removeAllViews();
newContainer.addView(mSeekBar, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
}
}
catch (Exception ex)
{
}
updateView(view);
}
/**
* Update a SeekBarPreference view with our current state
*
* @param view
*/
private void updateView(View view)
{
try
{
RelativeLayout layout = (RelativeLayout) view;
mStatusText = layout.findViewById(R.id.seekBarPrefValue);
mStatusText.setText(String.valueOf(mCurrentValue));
mStatusText.setMinimumWidth(30);
mSeekBar.setProgress(mCurrentValue - mMinValue);
TextView unitsRight = layout.findViewById(R.id.seekBarPrefUnitsRight);
unitsRight.setText(mUnitsRight);
TextView unitsLeft = layout.findViewById(R.id.seekBarPrefUnitsLeft);
unitsLeft.setText(mUnitsLeft);
}
catch (Exception e)
{
}
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
{
int newValue = progress + mMinValue;
if (newValue > mMaxValue)
newValue = mMaxValue;
else if (newValue < mMinValue)
newValue = mMinValue;
else if (mInterval != 1 && newValue % mInterval != 0)
newValue = Math.round(((float) newValue) / mInterval) * mInterval;
// change rejected, revert to the previous value
if (!callChangeListener(newValue))
{
seekBar.setProgress(mCurrentValue - mMinValue);
return;
}
// change accepted, store it
mCurrentValue = newValue;
mStatusText.setText(String.valueOf(newValue));
persistInt(newValue);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar)
{
}
@Override
public void onStopTrackingTouch(SeekBar seekBar)
{
notifyChanged();
}
@Override
protected Object onGetDefaultValue(TypedArray ta, int index)
{
return ta.getInt(index, DEFAULT_VALUE);
}
@Override
protected void onSetInitialValue(boolean restoreValue, Object defaultValue)
{
if (restoreValue)
mCurrentValue = getPersistedInt(mCurrentValue);
else
{
int temp = 0;
try
{
temp = (Integer) defaultValue;
}
catch (Exception ex)
{
}
persistInt(temp);
mCurrentValue = temp;
}
}
public void setValue(int value)
{
mCurrentValue = value;
}
}
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