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
/**
	 * Activate the set of given filters. An <i>active</i> filter will always be
	 * returned from {@link #getVisibleFilters(boolean)}. An <i>inactive</i> filter will
	 * only be returned from {@link #getVisibleFilters(boolean)} when it is
	 * called with <b>false</b>.
	 * 
	 * 
	 * @param theFilterIds
	 *            An array of filter ids to activate.
	 * 
	 */
	void setActiveFilterIds(String[] theFilterIds);
	/** 
	 * Persist the current activation state for visible filters.
	 */
	void persistFilterActivationState();
	
	/**
	 * 
	 * Return the viewer filter for the given descriptor
	 * 
	 * @param theDescriptor
	 *            A non-null filter descriptor.
	 * @return the viewer filter for the given descriptor
	 * @since 3.3
	 */
	ViewerFilter getViewerFilter(ICommonFilterDescriptor theDescriptor);
	
}