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
if (resource.isDerived()) { 
			return true;
		}		
		if (resource instanceof IContainer) {
			IResource[] members= ((IContainer) resource).members();
			for (int i= 0; i < members.length; i++) {
				if (hasClassfiles(members[i])) {
					return true;
				}
			}
		}
		return false;
	}
	
	public static void removeOldClassfiles(IResource resource) throws CoreException {
		if (resource.isDerived()) {
			resource.delete(false, null);
		} else if (resource instanceof IContainer) {
			IResource[] members= ((IContainer) resource).members();
			for (int i= 0; i < members.length; i++) {
				removeOldClassfiles(members[i]);
			}
		}
	}
	
	public static IRemoveOldBinariesQuery getRemoveOldBinariesQuery(final Shell shell) {
		return new IRemoveOldBinariesQuery() {
			public boolean doQuery(final IPath oldOutputLocation) throws OperationCanceledException {
				final int[] res= new int[] { 1 };
				Display.getDefault().syncExec(new Runnable() {