NOTE: These two methods:
Tip: Subclass AbstractHandler rather than implementing IHandler. but you can use it to the below section you need to set:
IHandler the chosen operation is not enabled
NOT USE popupMenus instead of Menus
isEnabled: should be set to true
isHandled:should be set to true
import org.eclipse.core.commands.AbstractHandler; import org.eclipse.core.commands.ExecutionEvent; import org.eclipse.core.commands.ExecutionException; import org.eclipse.core.commands.IHandler; import org.eclipse.core.commands.IHandlerListener; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.swt.widgets.MessageBox; import org.eclipse.ui.IWorkbenchWindow; import org.eclipse.ui.handlers.HandlerUtil; public class MyHandler implements IHandler { private FontChanger font=FontChanger.getInstance(); @Override public Object execute(ExecutionEvent event) throws ExecutionException { // TODO Auto-generated method stub IWorkbenchWindow window = HandlerUtil.getActiveWorkbenchWindowChecked(event); MessageDialog.openInformation( window.getShell(), "Demo", "Hello, Eclipse world"); font.decreaseSize(); return null; } @Override public void addHandlerListener(IHandlerListener handlerListener) { // TODO Auto-generated method stub } @Override public void dispose() { // TODO Auto-generated method stub } @Override public boolean isEnabled() { // TODO Auto-generated method stub return true; } @Override public boolean isHandled() { // TODO Auto-generated method stub return true; } @Override public void removeHandlerListener(IHandlerListener handlerListener) { // TODO Auto-generated method stub } }
menu :
http://stackoverflow.com/questions/1342532/how-to-add-items-in-popup-menu
add it as a menu or menu item
Eclipse base location uri for menus
Since they are impossible to find on the net here is the list of all base location uri's in eclipse that are used in the org.eclipse.ui.menus extension point:
menu:org.eclipse.ui.main.menu // the top-level menu
popup:org.eclipse.ui.popup.any // all pop-up menus
toolbar:org.eclipse.ui.main.toolbar // the top-level tool bar
toolbar:org.eclipse.ui.trim.command1 // the top left trim (main toolbar area)
toolbar:org.eclipse.ui.trim.command2 // the top right trim (perspective switcher area)
toolbar:org.eclipse.ui.trim.vertical1 // the left vertical trim
toolbar:org.eclipse.ui.trim.vertical2 // the right vertical trim
toolbar:org.eclipse.ui.trim.status // the status line trim
to access the menu/toolbar/popup of a part (view or editor):
menu:partid //the part's chevron menu
toolbar:partid //the part's toolbar (cannot contain other toolbars)
popup:partid //the part's popup menu (register the context menu in createPartControl first)
eclipse plugin menu gray out
check the handler class is correct set ,or not implement
本文转自hcy's workbench博客园博客，原文链接：http://www.cnblogs.com/alterhu/p/3996200.html，如需转载请自行联系原作者。
