package com.exigen.ie.constrainer.impl;
import com.exigen.ie.constrainer.Constrainer;
import com.exigen.ie.constrainer.Undo;
import com.exigen.ie.constrainer.UndoImpl;
import com.exigen.ie.constrainer.Undoable;
import com.exigen.ie.constrainer.UndoableInt;
import com.exigen.ie.tools.Reusable;
import com.exigen.ie.tools.ReusableFactory;
/**
* A generic implementation of the UndoableInt.
*/
//public final class UndoableIntImpl extends UndoableOnceImpl implements UndoableInt
public final class UndoableIntImpl extends UndoableImpl implements UndoableInt
{
private int _value;
/**
* Constructor with a given value.
*/
public UndoableIntImpl(Constrainer constrainer, int value)
{
this(constrainer,value,"");
}
/**
* Constructor with a given value and name.
*/
public UndoableIntImpl(Constrainer constrainer, int value, String name)
{
super(constrainer, name);
_value = value;
}
public int value()
{
return _value;
}
public void setValue(int value)
{
if(value != _value)
{
addUndo();
_value = value;
}
}
/**
* Sets the current value.
*/
void forceValue(int value)
{
_value = value;
}
public Undo createUndo()
{
return UndoUndoableInt.getUndo();
}
/**
* Returns a String representation of this object.
* @return a String representation of this object.
*/
public String toString()
{
return name() + "[" + _value + "]";
}
/**
* Undo Class for UndoUndoableInt.
*/
static class UndoUndoableInt extends UndoImpl
{
static ReusableFactory _factory = new ReusableFactory()
{
protected Reusable createNewElement()
{
return new UndoUndoableInt();
}
};
static UndoUndoableInt getUndo()
{
return (UndoUndoableInt) _factory.getElement();
}
private int _value;
public void undoable(Undoable u)
{
super.undoable(u);
UndoableInt var = (UndoableInt) u;
_value = var.value();
}
public void undo()
{
UndoableIntImpl var = (UndoableIntImpl) undoable();
var._value = _value;
super.undo();
}
/**
* Returns a String representation of this object.
* @return a String representation of this object.
*/
public String toString()
{
return "UndoUndoableInt "+undoable();
}
} // ~UndoUndoableInt
} // ~UndoableIntImpl