Bug 96048 Using the "Remove" button to remove source code file in the Java Build Path/Libraries does not remove path
Eclipse 3.1M7 Java 1.5.0_02 In the Java Build Path/Libraries tab, if a source code file has been attached to a library, then using the "Remove" button will not remove the path. Instead one needs to use "Edit" to clear the field. Steps to reproduce: 1. Attach src.jar to the rt.jar 2. Select "Source code attachment:" line 3. Click "Remove" (UI shows that there is no attachment) 4. Click "OK" to accept 5. Reopen Java Build Path/Libraries 6. Discover that src.jar is still attached to rt.jar
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/LibrariesWorkbookPage.java
boolean noAttributes= containsOnlyTopLevelEntries(selElements);
		fLibrariesList.enableButton(IDX_ADDEXT, noAttributes);
		fLibrariesList.enableButton(IDX_ADDFOL, noAttributes);
		fLibrariesList.enableButton(IDX_ADDJAR, noAttributes);
		fLibrariesList.enableButton(IDX_ADDLIB, noAttributes);
		fLibrariesList.enableButton(IDX_ADDVAR, noAttributes);
	}
	
	private boolean canEdit(List selElements) {
		if (selElements.size() != 1) {
			return false;
		}
		Object elem= selElements.get(0);
		if (elem instanceof CPListElement) {
			CPListElement curr= (CPListElement) elem;
			return !(curr.getResource() instanceof IFolder) && curr.getParentContainer() == null;
		}
		if (elem instanceof CPListElementAttribute) {
			CPListElementAttribute attrib= (CPListElementAttribute) elem;
			if (attrib.isInNonModifiableContainer()) {
				return false;
			}
			return true;
		}
		return false;
	}
	
	private void libaryPageDialogFieldChanged(DialogField field) {
		if (fCurrJProject != null) {