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srcs/juloo.common/IntSlideBarPreference.java

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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;
+
+/*
+** IntSlideBarPreference
+** -
+** Open a dialog showing a seekbar
+** -
+** xml attrs:
+**   android:defaultValue		Default value (int)
+**   min						min value (int)
+**   max						max value (int)
+** -
+** Summary field allow to show the current value using %s flag
+*/
+public class IntSlideBarPreference extends DialogPreference
+	implements SeekBar.OnSeekBarChangeListener
+{
+	private LinearLayout	_layout;
+	private TextView		_textView;
+	private SeekBar			_seekBar;
+
+	private int				_min;
+
+	private String			_initialSummary;
+
+	public IntSlideBarPreference(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);
+		_min = attrs.getAttributeIntValue(null, "min", 0);
+		int max = attrs.getAttributeIntValue(null, "max", 0);
+		_seekBar.setMax(max - _min);
+		_layout = new LinearLayout(getContext());
+		_layout.setOrientation(LinearLayout.VERTICAL);
+		_layout.addView(_textView);
+		_layout.addView(_seekBar);
+	}
+
+	@Override
+	public void				onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
+	{
+		updateText();
+	}
+
+	@Override
+	public void				onStartTrackingTouch(SeekBar seekBar)
+	{
+	}
+
+	@Override
+	public void				onStopTrackingTouch(SeekBar seekBar)
+	{
+	}
+
+	@Override
+	protected void			onSetInitialValue(boolean restorePersistedValue, Object defaultValue)
+	{
+		int				value;
+
+		if (restorePersistedValue)
+		{
+			value = getPersistedInt(_min);
+		}
+		else
+		{
+			value = (Integer)defaultValue;
+			persistInt(value);
+		}
+		_seekBar.setProgress(value - _min);
+		updateText();
+	}
+
+	@Override
+	protected Object		onGetDefaultValue(TypedArray a, int index)
+	{
+		return (a.getInt(index, _min));
+	}
+
+	@Override
+	protected void			onDialogClosed(boolean positiveResult)
+	{
+		if (positiveResult)
+			persistInt(_seekBar.getProgress() + _min);
+	}
+
+	protected View			onCreateDialogView()
+	{
+		ViewGroup		parent = (ViewGroup)_layout.getParent();
+
+		if (parent != null)
+			parent.removeView(_layout);
+		return (_layout);
+	}
+
+	private void			updateText()
+	{
+		String			f = String.format(_initialSummary, _seekBar.getProgress() + _min);
+
+		_textView.setText(f);
+		setSummary(f);
+	}
+}