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[simantics/platform.git] / bundles / org.simantics.g2d / src / org / simantics / g2d / diagram / handler / PickContext.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.diagram.handler;\r
13 \r
14 import java.util.Collection;\r
15 \r
16 import org.simantics.g2d.diagram.IDiagram;\r
17 import org.simantics.g2d.diagram.handler.impl.PickContextImpl;\r
18 import org.simantics.g2d.element.IElement;\r
19 import org.simantics.g2d.element.handler.InternalSize;\r
20 import org.simantics.g2d.element.handler.Outline;\r
21 import org.simantics.g2d.element.handler.Pick;\r
22 \r
23 /**\r
24  * Pick process is the following:\r
25  *  1) Rough estimation with {@link InternalSize} \r
26  *  2) use {@link Pick} if implementations exist\r
27  *  3) if pick doesn't exist, use {@link Outline} if implementations exist \r
28  * \r
29  * @see {@link PickContextImpl} Implementation\r
30  * @author Toni Kalajainen\r
31  */\r
32 public interface PickContext extends DiagramHandler {\r
33 \r
34         /**\r
35          * Make a pick to the diagram.\r
36          * Result content is added in z-order starting from the bottom.\r
37          * \r
38          * @param diagram\r
39          * @param ctx\r
40          * @param request\r
41          * @param result\r
42          */\r
43         void pick(\r
44                         IDiagram diagram, \r
45                         PickRequest request, \r
46                         Collection<IElement> result);   \r
47         \r
48 }\r