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/filters/UpdateActiveFiltersOperation.java
^ filterService
									.isActive(visibleFilterDescriptors[i]
											.getId())) {
						updateFilterActivation = true;
					}
				}
				
				if (updateFilterActivation) {
					filterService.setActiveFilterIds(filterIdsToActivate);
					filterService.persistFilterActivationState();
					commonViewer.resetFilters();
					ViewerFilter[] visibleFilters = filterService
							.getVisibleFilters(true);
					for (int i = 0; i < visibleFilters.length; i++) {
						commonViewer.addFilter(visibleFilters[i]);
					}
					
					
					commonViewer.setSelection(StructuredSelection.EMPTY);
				}
			} else {
				NavigatorFilterService internalFilterService = (NavigatorFilterService)filterService;
				
				internalFilterService.addActiveFilterIds(filterIdsToActivate);
				ICommonFilterDescriptor[] visibleDescriptors = filterService
						.getVisibleFilterDescriptors();
				for (int i = 0; i < visibleDescriptors.length; i++) {
					if(Arrays.binarySearch(filterIdsToActivate, visibleDescriptors[i].getId()) >= 0 ) {
						commonViewer.addFilter(internalFilterService.getViewerFilter(visibleDescriptors[i]));
					}