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
tests/org.eclipse.ui.tests.navigator/src/org/eclipse/ui/tests/navigator/NavigatorTestBase.java
_actionService.setContext(new ActionContext(sel));
		_actionService.fillContextMenu(mm);
		IContributionItem[] items = mm.getItems();
		for (int i = 0; i < items.length; i++) {
			if (items[i] instanceof MenuManager) {
				MenuManager childMm = (MenuManager) items[i];
				if (DEBUG) {
					System.out.println("menu text: " + childMm.getMenuText());
				}
				if (childMm.getMenuText().indexOf(item) >= 0)
					return childMm;
			} else if (items[i] instanceof ActionContributionItem) {
				ActionContributionItem aci = (ActionContributionItem) items[i];
				if (DEBUG) {
					System.out.println("action text: " + aci.getAction().getText());
				}
				if (aci.getAction().getText().indexOf(item) >= 0)
					return aci;
			}
		}
		return null;
	}
	protected boolean verifyMenu(IStructuredSelection sel, String item, boolean useNewMenu) {
		MenuManager mm = new MenuManager();
		_actionService.setContext(new ActionContext(sel));
		_actionService.fillContextMenu(mm);
		IContributionItem[] items = mm.getItems();
		if (useNewMenu) {
			MenuManager newMm = (MenuManager) items[1];
			items = newMm.getItems();