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| <h1>NetBeans Graph Library 1.0 - FAQ</h1> |
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| This document lists questions and answers on NetBeans Graph Library. |
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| <p> |
| <b>Q: How do I link nodes?</b><br> |
| <b>A: </b>Nodes cannot be linked directly. A link could be attached to ports only. |
| The only way is to create ports, attach them to appropriate nodes. |
| Then create a link and call its setSourcePort and setTargetPort. Of course all nodes and |
| the link has to be added into the document. For example look at the <a href="http://graph.netbeans.org/source/browse/graph/examples/src/org/netbeans/graph/examples/Document1.java?rev=graph1&content-type=text/vnd.viewcvs-markup">examples.Document1</a> class. |
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| <b>Q: How to control whether a user can create a link?</b><br> |
| <b>A: </b>If you are using built-in implementation of ports (GraphPort class), there |
| is setSource and setTarget method. Using them you can set whether a library can use the |
| port are a possible source and/or target. When an user performs "linking" action from |
| a valid source port to a valid target port, when a IGraphEventHandler.isLinkCreatable method |
| is called by the library to resolve whether a link could be create between these two ports. |
| If it returns true, then the library calls IGraphEventHandler.createLink to actual creation. |
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| If you would like to include your question here, please send it to <a href="mailto:users@graph.netbeans.org">users@graph.netbeans.org</a> mailing list. |
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