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/*
Cassowary.net: an incremental constraint solver for .NET
(http://lumumba.uhasselt.be/jo/projects/cassowary.net/)
Copyright (C) 2005 Jo Vermeulen (jo.vermeulen@uhasselt.be)
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public License
as published by the Free Software Foundation; either version 2.1
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
using System;
namespace Cassowary
{
public abstract class ClEditOrStayConstraint : ClConstraint
{
public ClEditOrStayConstraint(ClVariable var,
ClStrength strength,
double weight) : base(strength, weight)
{
_variable = var;
_expression = new ClLinearExpression(_variable, -1.0, _variable.Value);
}
public ClEditOrStayConstraint(ClVariable var,
ClStrength strength) : this(var, strength, 1.0)
{}
public ClEditOrStayConstraint(ClVariable var) : this(var, ClStrength.Required, 1.0)
{
_variable = var;
}
public override string ToString()
{
// add missing bracket -> see ClConstraint#ToString(...)
return base.ToString() + ")";
}
public ClVariable Variable
{
get { return _variable; }
}
public override ClLinearExpression Expression
{
get { return _expression; }
}
protected ClVariable _variable;
// cache the expression
private ClLinearExpression _expression;
}
}
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