Bug 292813 [CommonNavigator] Please provide an API for enabling and disabling common navigator filters programmatically
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/532.0 (KHTML, like Gecko) Chrome/3.0.195.27 Safari/532.0 Build Identifier: M20090917-0800 Recently I had a case where I wanted to enable/disable a common navigator filter from code and found it very difficult. I basically ended up using the code in org.eclipse.ui.internal.navigator.filters.UpdateActiveFiltersOperation as a reference and ended up manually creating or pruning an array, as well as adding/removing a corresponding ViewerFilter to/from and refreshing the underlying viewer. This seems quite complicated and I think others could benefit from it being API similar to how API was recently added to enable and disable content contributions (via INavigatorContentService#activateExtensions and INavigatorContentService#deactivateExtensions). Reproducible: Always
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/internal/navigator/NavigatorFilterService.java
*            The filter ids to activate.
	 */
	public void addActiveFilterIds(String[] theFilterIds) {
		Assert.isNotNull(theFilterIds);
		synchronized (activeFilters) {
			activeFilters.addAll(Arrays.asList(theFilterIds));
		}
	}
	
	/**
	 * 
	 * @param aFilterId The id of the filter to activate or deactivate
	 * @param toMakeActive True to make the filter active, false to make the filter inactive
	 */
	public void setActive(String aFilterId, boolean toMakeActive) {
		synchronized (activeFilters) {
			boolean isActive = activeFilters.contains(aFilterId);
			if(isActive ^ toMakeActive) {
				if(toMakeActive)
					activeFilters.remove(aFilterId);
				else
					activeFilters.add(aFilterId);
					
			}
				
		}
	}
 
}