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/navigator/INavigatorFilterService.java
/**
	 * 
	 * Determine the set of filters which are <i>visible</i> to the
	 * content service associated with this filter service. 
	 * 
	 * @param toReturnOnlyActiveFilters
	 *            True indicates that only active filters should be returned.
	 * @return An array of ViewerFilters that should be applied to the viewer
	 *         rendering the content from this INavigatorContentService
	 */
	ViewerFilter[] getVisibleFilters(boolean toReturnOnlyActiveFilters);
	/**
	 * 
	 * <i>Visible</i> filters are filters whose ids match a
	 * <b>viewerContentBinding</b> for the corresponding viewer.
	 * 
	 * @return An array of all visible filter descriptors.
	 */
	ICommonFilterDescriptor[] getVisibleFilterDescriptors();
	/**
	 * @param aFilterId
	 *            Check the activation of aFilterId for the content service
	 *            corresponding to this filter service.
	 * @return True if the filter specified by the id is active for the content
	 *         service corresponding to this filter service.
	 */
	boolean isActive(String aFilterId);