01: /**
02: * Wizard Framework
03: * Copyright 2004 - 2005 Andrew Pietsch
04: *
05: * This library is free software; you can redistribute it and/or
06: * modify it under the terms of the GNU Lesser General Public
07: * License as published by the Free Software Foundation; either
08: * version 2.1 of the License, or (at your option) any later version.
09: *
10: * This library is distributed in the hope that it will be useful,
11: * but WITHOUT ANY WARRANTY; without even the implied warranty of
12: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13: * Lesser General Public License for more details.
14: *
15: * You should have received a copy of the GNU Lesser General Public
16: * License along with this library; if not, write to the Free Software
17: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18: *
19: * $Id: Condition.java,v 1.3 2005/05/16 23:07:00 pietschy Exp $
20: */package org.pietschy.wizard.models;
21:
22: import org.pietschy.wizard.WizardModel;
23:
24: /**
25: * An interface that is used by {@link DynamicModel} and {@link MultiPathModel} to determine
26: * if a wizard should display a particular step or group of steps.
27: * @version $Revision: 1.3 $
28: * @author andrewp
29: * @see DynamicModel#add(org.pietschy.wizard.WizardStep, Condition)
30: * @see BranchingPath#addBranch(Path, Condition)
31: *
32: */
33: public interface Condition {
34: /**
35: * Called to determine when the path being added using {@link BranchingPath#addBranch} should
36: * be traversed. The selector is passed the current {@link WizardModel} to assist with the
37: * decision.
38: * @param model the {@link WizardModel} the condition should use.
39: * @return true if the .
40: */
41: public boolean evaluate(WizardModel model);
42: }
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