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