Bug 213040 [Markers] Selected filters not being kept on restart
When I select "Warnings on Selection" and then restart it is not selected when I come back in. We need to retain these selections. Note this is only a problem when selecting from the menu - from the dialog works fine.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/provisional/views/markers/MarkerContentGenerator.java
* Write the settings for the filters to the memento.
	 * 
	 * @param memento
	 */
	private void writeFiltersSettings(XMLMemento memento) {
		memento.putBoolean(TAG_AND, andFilters);
		Iterator groups = getAllFilters().iterator();
		while (groups.hasNext()) {
			MarkerFieldFilterGroup group = (MarkerFieldFilterGroup) groups
					.next();
			IMemento child = memento
					.createChild(TAG_GROUP_ENTRY, group.getID());
			group.saveFilterSettings(child);
		}
	}
	/**
	 * Disable all of the filters in the receiver.
	 */
	void disableAllFilters() {
		Collection allFilters = getEnabledFilters();
		Iterator enabled = allFilters.iterator();
		while(enabled.hasNext()){
			MarkerFieldFilterGroup group = (MarkerFieldFilterGroup) enabled.next();
			group.setEnabled(false);
		}
		allFilters.clear();
		
	}
}