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package org.eclipse.team.internal.ccvs.ui.model;
/*
* (c) Copyright IBM Corp. 2000, 2001.
* All Rights Reserved.
*/
import org.eclipse.team.internal.ccvs.core.ICVSRemoteFolder;
import org.eclipse.team.internal.ccvs.core.ICVSRemoteResource;
import org.eclipse.team.internal.ccvs.core.ICVSResource;
import org.eclipse.team.internal.ccvs.core.resources.RemoteResource;
import org.eclipse.ui.model.WorkbenchContentProvider;
/**
* Extension to the generic workbench content provider mechanism
* to lazily determine whether an element has children. That is,
* children for an element aren't fetched until the user clicks
* on the tree expansion box.
*/
public class RemoteContentProvider extends WorkbenchContentProvider {
/* (non-Javadoc)
* Method declared on WorkbenchContentProvider.
*/
public boolean hasChildren(Object element) {
if (element == null) {
return false;
}
// the + box will always appear, but then disappear
// if not needed after you first click on it.
if (element instanceof ICVSRemoteResource) {
if (element instanceof ICVSRemoteFolder) {
return ((ICVSRemoteFolder)element).isExpandable();
}
return ((ICVSRemoteResource)element).isContainer();
} else if(element instanceof CVSResourceElement) {
ICVSResource r = ((CVSResourceElement)element).getCVSResource();
if(r instanceof RemoteResource) {
return r.isFolder();
}
} else if(element instanceof VersionCategory) {
return true;
} else if(element instanceof BranchTag) {
return true;
} else if(element instanceof RemoteModule) {
return true;
}
return super.hasChildren(element);
}
}
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