Bug 120691 [Markers] Expanded categories not persisted between sessions
build I20051213 - in the Problems view in hierarchical mode, with many problems showing, - expand a few categories, select some leaf problems - shutdown / restart - the tree is collapsed Users will expect that the work they did to expand/collapse categories to see the problems they care most about will be persisted between sessions.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/ExtendedMarkersView.java
}
		};
	}
	/**
	 * Return the listener that updates sort values on selection.
	 * 
	 * @return SelectionListener
	 */
	private SelectionListener getHeaderListener() {
		return new SelectionAdapter() {
			/**
			 * Handles the case of user selecting the header area.
			 */
			public void widgetSelected(SelectionEvent e) {
				final TreeColumn column = (TreeColumn) e.widget;
				final MarkerField field = (MarkerField) column
						.getData(MARKER_FIELD);
				setPrimarySortField(field, column);
			}
		};
	}
	/**
	 * Return the selection listener for the page selection change.
	 * 
	 * @return ISelectionListener
	 */
	private ISelectionListener getPageSelectionListener() {
		return new ISelectionListener() {
			/**
			 * Get an ITaskListResourceAdapter for use by the default/