Bug 122505 [build path] Can't exclude folder if exclusion pattern disabled on project/workspace level
Version: 3.2.0 Build id: I20051220-0800 Create project with inclusion and exclusion patters disabled and no seperate src and output folder. On build path menu select 'New Source Folder' The wizard shows the error: Cannot nest 'P03/src' inside 'P03'. To enable the nesting exclude 'src/' from 'P03' But the check box is disabled (which is correct). The error should say something else.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/AddSourceFolderWizardPage.java
if (curr != newEntry && curr.getEntryKind() == IClasspathEntry.CPE_SOURCE && currPath.isPrefixOf(entryPath)) {
				boolean added= curr.addToExclusions(entryPath);
				if (added) {
					modifiedEntries.add(curr);
				}
			}
		}
	}
	
	public IResource getCorrespondingResource() {
		return fNewElement.getJavaProject().getProject().getFolder(fRootDialogField.getText());
	}
	
	public IPath getOutputLocation() {
		if (fNewOutputLocation != null) {
			return fNewOutputLocation;
		}
		
		return fOutputLocation;
	}
	
	
	
	private IFolder chooseFolder(String title, String message, IPath initialPath) {	
		Class[] acceptedClasses= new Class[] { IFolder.class };
		ISelectionStatusValidator validator= new TypedElementSelectionValidator(acceptedClasses, false);
		ViewerFilter filter= new TypedViewerFilter(acceptedClasses, null);	
		
		ILabelProvider lp= new WorkbenchLabelProvider();
		ITreeContentProvider cp= new WorkbenchContentProvider();