IntEditTextPreference.java

/*
   EditTextPreference to store/load integer values
 
   Copyright 2013 Thincast Technologies GmbH, Author: Martin Fleisz
 
   This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
   If a copy of the MPL was not distributed with this file, You can obtain one at
   http://mozilla.org/MPL/2.0/.
*/
 
package com.freerdp.freerdpcore.utils;
 
import android.content.Context;
import android.content.res.TypedArray;
import android.preference.EditTextPreference;
import android.util.AttributeSet;
 
import com.freerdp.freerdpcore.R;
 
public class IntEditTextPreference extends EditTextPreference
{
 
  private int bounds_min, bounds_max, bounds_default;
 
  public IntEditTextPreference(Context context)
  {
    super(context);
    init(context, null);
  }
 
  public IntEditTextPreference(Context context, AttributeSet attrs)
  {
    super(context, attrs);
    init(context, attrs);
  }
 
  public IntEditTextPreference(Context context, AttributeSet attrs, int defStyle)
  {
    super(context, attrs, defStyle);
    init(context, attrs);
  }
 
  private void init(Context context, AttributeSet attrs)
  {
    if (attrs != null)
    {
      TypedArray array =
          context.obtainStyledAttributes(attrs, R.styleable.IntEditTextPreference, 0, 0);
      bounds_min =
          array.getInt(R.styleable.IntEditTextPreference_bounds_min, Integer.MIN_VALUE);
      bounds_max =
          array.getInt(R.styleable.IntEditTextPreference_bounds_max, Integer.MAX_VALUE);
      bounds_default = array.getInt(R.styleable.IntEditTextPreference_bounds_default, 0);
      array.recycle();
    }
    else
    {
      bounds_min = Integer.MIN_VALUE;
      bounds_max = Integer.MAX_VALUE;
      bounds_default = 0;
    }
  }
 
  public void setBounds(int min, int max, int defaultValue)
  {
    bounds_min = min;
    bounds_max = max;
    bounds_default = defaultValue;
  }
 
  @Override protected String getPersistedString(String defaultReturnValue)
  {
    int value = getPersistedInt(-1);
    if (value > bounds_max || value < bounds_min)
      value = bounds_default;
    return String.valueOf(value);
  }
 
  @Override protected boolean persistString(String value)
  {
    return persistInt(Integer.parseInt(value));
  }
 
  @Override protected void onDialogClosed(boolean positiveResult)
  {
    if (positiveResult)
    {
      // prevent exception when an empty value is persisted
      if (getEditText().getText().length() == 0)
        getEditText().setText("0");
 
      // check bounds
      int value = Integer.parseInt(getEditText().getText().toString());
      if (value > bounds_max || value < bounds_min)
        value = bounds_default;
      getEditText().setText(String.valueOf(value));
    }
 
    super.onDialogClosed(positiveResult);
  }
}