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[simantics/platform.git] / bundles / org.simantics.g2d / src / org / simantics / g2d / element / handler / Validator.java
1 /*******************************************************************************\r
2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
3  * in Industry THTH ry.\r
4  * All rights reserved. This program and the accompanying materials\r
5  * are made available under the terms of the Eclipse Public License v1.0\r
6  * which accompanies this distribution, and is available at\r
7  * http://www.eclipse.org/legal/epl-v10.html\r
8  *\r
9  * Contributors:\r
10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
11  *******************************************************************************/\r
12 package org.simantics.g2d.element.handler;\r
13 \r
14 import java.util.Collection;\r
15 \r
16 import org.simantics.g2d.canvas.ICanvasContext;\r
17 import org.simantics.g2d.element.IElement;\r
18 \r
19 /**\r
20  * This interface is implemented by all element contributions that\r
21  * have fields to be validated. \r
22  * \r
23  * @author Toni Kalajainen\r
24  */\r
25 public interface Validator extends ElementHandler {\r
26         \r
27         public interface Suggestion {\r
28                 String  getMessage(IElement e, ICanvasContext ctx);\r
29                 /**\r
30                  * \r
31                  * @param e\r
32                  * @param ctx\r
33                  * @return\r
34                  */\r
35                 boolean fix(IElement e, ICanvasContext ctx);\r
36         }\r
37         \r
38         public interface Issue {\r
39                 String  getMessage(IElement e, ICanvasContext ctx);\r
40                 /**\r
41                  * \r
42                  * @param e\r
43                  * @param ctx\r
44                  * @param suggestionList instances are should be static, shareable \r
45                  */\r
46                 void    addSuggestions(IElement e, ICanvasContext ctx, Collection<Suggestion> suggestionList);\r
47         }\r
48                 \r
49         void validate(IElement e, ICanvasContext ctx, Collection<Issue> lst);   \r
50 \r
51 }\r