// $Id: ModeCreateCommentEdge.java 15591 2008-08-20 00:21:10Z tfmorris $
// Copyright (c) 2005-2008 The Regents of the University of California. All
// Rights Reserved. Permission to use, copy, modify, and distribute this
// software and its documentation without fee, and without a written
// agreement is hereby granted, provided that the above copyright notice
// and this paragraph appear in all copies. This software program and
// documentation are copyrighted by The Regents of the University of
// California. The software program and documentation are supplied "AS
// IS", without any accompanying services from The Regents. The Regents
// does not warrant that the operation of the program will be
// uninterrupted or error-free. The end-user understands that the program
// was developed for research purposes and is advised not to rely
// exclusively on the program for any reason. IN NO EVENT SHALL THE
// UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
// SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS,
// ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
// THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY
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package org.argouml.uml.diagram.ui;
import org.argouml.model.Model;
import org.argouml.uml.CommentEdge;
import org.tigris.gef.presentation.Fig;
/**
* A Mode to interpret user input while creating a comment edge.
* The comment can connect an existing comment node to any other existing
* node or edge.
*/
public final class ModeCreateCommentEdge extends ModeCreateGraphEdge {
/*
* If we're drawing to an edge then only allow if the start is a comment
* @see org.argouml.uml.diagram.ui.ModeCreateGraphEdge#isConnectionValid(org.tigris.gef.presentation.Fig, org.tigris.gef.presentation.Fig)
*/
@Override
protected final boolean isConnectionValid(Fig source, Fig dest) {
if (dest instanceof FigNodeModelElement) {
Object srcOwner = source.getOwner();
Object dstOwner = dest.getOwner();
if (!Model.getFacade().isAModelElement(srcOwner)
|| !Model.getFacade().isAModelElement(dstOwner)) {
return false;
}
if (Model.getModelManagementHelper().isReadOnly(srcOwner)
|| Model.getModelManagementHelper().isReadOnly(dstOwner)) {
return false;
}
return Model.getFacade().isAComment(srcOwner)
|| Model.getFacade().isAComment(dstOwner);
} else {
return true;
}
}
protected final Object getMetaType() {
return CommentEdge.class;
}
}