Bug 155273 [Markers] Visibility of problems view columns should be configurable
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/ExtendedMarkersView.java
updateStatusLine((IStructuredSelection) viewer
							.getSelection());
			}
		});
		PlatformUI.getWorkbench().getWorkingSetManager()
				.addPropertyChangeListener(getWorkingSetListener());
		registerContextMenu();
		initDragAndDrop();
	}
	/**
	 * Turn off all filters in the builder.
	 */
	void disableAllFilters() {
		builder.disableAllFilters();
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.part.WorkbenchPart#dispose()
	 */
	public void dispose() {
		super.dispose();
		builder.dispose();
		updateJob.cancel();
		instanceCount--;
		if (clipboard != null)
			clipboard.dispose();
		IDEWorkbenchPlugin.getDefault().getPreferenceStore()
				.removePropertyChangeListener(preferenceListener);
		getSite().getPage().removePostSelectionListener(pageSelectionListener);