Bug 115832 [build path] Can't uncheck export of source folder
build I20051102-1600 In order to test compiling JFace against a reduced subset of core.runtime, I: - changed the build path of org.eclipse.jface to include its runtime-util source folder - removed the plug-in dependencies classpath container - added o.e.core.commands and SWT as explicit projects On the Libraries tab, the runtime-util source folder is exported, and I cannot uncheck it, even though the check box is enabled. With this setup, downstream plug-ins complain about references to IProgressMonitor etc due to access restrictions from JFace. I do not want these plug-ins to see the ones in runtime-util. They should compile against the org.eclipse.core.runtime plug-in as usual. Expected behaviour: - The ability to uncheck export of the source folder.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/BuildPathsBlock.java
/*
	 * Creates the Java project and sets the configured build path and output location.
	 * If the project already exists only build paths are updated.
	 */
	private void internalConfigureJavaProject(List classPathEntries, IPath outputLocation, IRemoveOldBinariesQuery reorgQuery, IProgressMonitor monitor) throws CoreException, OperationCanceledException {
		
		
		
		if (!fWorkspaceRoot.exists(outputLocation)) {
			IFolder folder= fWorkspaceRoot.getFolder(outputLocation);
			CoreUtility.createFolder(folder, true, true, null);
			folder.setDerived(true);		
		}
		
		if (monitor.isCanceled()) {
			throw new OperationCanceledException();
		}
		monitor.worked(2);
				
		int nEntries= classPathEntries.size();
		IClasspathEntry[] classpath= new IClasspathEntry[nEntries];
		
		
		for (int i= 0; i < nEntries; i++) {
			CPListElement entry= ((CPListElement)classPathEntries.get(i));
			IResource res= entry.getResource();
			if (res instanceof IFolder) {
				if (entry.getLinkTarget() != null) {
					if (!res.exists()) {