Bug 46753 [misc] Typing should not be blocked by background activity
Build 20031111 1. Open an editor 2. Start a CVS background activity (e.g. Synchronize several projects) 3. Start typing in the editor Observe: The whole UI freezes and what you typed is not shown in the editor until the end of the backgroung activity
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/filebuffers/CompilationUnitDocumentProvider2.java
public ISchedulingRule getSchedulingRule() {
					if (info.fElement instanceof IFileEditorInput)
						return ((IFileEditorInput)info.fElement).getFile().getParent();
					else
						return null;
				}
			};
		}
		return null;
	}
	/**
	 * Returns the preference whether handling temporary problems is enabled.
	 */
	protected boolean isHandlingTemporaryProblems() {
		IPreferenceStore store= JavaPlugin.getDefault().getPreferenceStore();
		return store.getBoolean(HANDLE_TEMPORARY_PROBLEMS);
	} 
	
	/**
	 * Switches the state of problem acceptance according to the value in the preference store.
	 */
	protected void enableHandlingTemporaryProblems() {
		boolean enable= isHandlingTemporaryProblems();
		for (Iterator iter= getFileInfosIterator(); iter.hasNext();) {
			FileInfo info= (FileInfo) iter.next();
			if (info.fModel instanceof IProblemRequestorExtension) {
				IProblemRequestorExtension  extension= (IProblemRequestorExtension) info.fModel;
				extension.setIsActive(enable);
			}
		}