Re: [pde-dev] Re: multiple dynamic popupMenus

[Leen Toelen <toelen@xxxxxxxxx>]

Hi,

Thanks for your reply. I have done the following:
- add an ObjectContribution, with an Action implementing
IObjectActionDelegate and IMenuCreator
- add a menuListener to the parent action.

This works fine when I stay in the same plugin as the plugin
registering the context menu. But when I add an objectContribution
from within another plugin the menu is not dynamically added. The
IObjectActionDelegate is only instanciated when I click on it (so I
cannot add a menuListener to it) Anyone knows how this is possible?

This is the code registering the context menu:
	private void initializePopUpMenu() {
		MenuManager manager = new MenuManager();
		manager.setRemoveAllWhenShown(true);
		manager.addMenuListener(new IMenuListener() {
			public void menuAboutToShow(IMenuManager mgr) {
				fillContextMenu(mgr);
			}
		});
		Menu fTextContextMenu = manager.createContextMenu(treeViewer
				.getControl());
		treeViewer.getControl().setMenu(fTextContextMenu);
		// register the menu to the site so that we can allow
		// actions to be plugged in
		getSite().registerContextMenu(manager, this.treeViewer);
		System.out.println(manager.getId());
	}


The code adding the dynamic menu:
public class MenuadderAction implements IObjectActionDelegate,IMenuCreator {
...
	public Menu getMenu(Menu parent) {
		fMenu = new Menu(parent);

		// Dynamically update menu when it shows (selection might have changed)
		fMenu.addMenuListener(new MenuListener() {
			public void menuShown(MenuEvent e) {
				updateMenu(fMenu);
			}

			public void menuHidden(MenuEvent e) {
			}
		});

		return fMenu;
	}

	public Menu getMenu(Control parent) {
		// NEVER USED
		return null;
	}

	/**
	 * When a menu is shown, remove all existing items on it,
	 * add the needed ones
	 */
	private void updateMenu(Menu m) {...}

	public void setActivePart(IAction action, IWorkbenchPart workbenchpart) {
		action.setMenuCreator(this);
	}

	public void setActiveEditor(IAction action, IEditorPart editorpart) {
	}

	public void selectionChanged(IAction action, ISelection myselection) {
		this.selection = (StructuredSelection) myselection;
		action.setMenuCreator(this);
	}

This works fine in one plugin (the same as the one registering the
context menu). When the popup menu is shown, all actions are
immediately instanciated. When I do the same in another plugin, the
action is only instanciated when I click on it.

Anyone has an idea how this is possible?

Regards,
Leen

On 10/14/05, Mihael Knezevic <m.knezevic@xxxxxxxx> wrote:
> Leen Toelen <toelen@...> writes:
>
> >
> > Hi,
> >
> > I have developed a TreeViewer and attached some objectContributions to
> > the context menu. This works fine, I have added some markers to the
> > menu, one of which MB_ADDITIONS. Now, between two separators, I have
> > to dynamically add menu items based on the selection. Sort of how the
> > "Open with>" menu works. The menu is shown, I do some database
> > lookups, and add a menu for each row found in the database.
> > Is this possible with the standard extension points?
> >
> > Regards,
> > Leen Toelen
> >
>
>
> extend the view class in the following way:
>
> public void createPartControl(Composite parent) {
> .
> .
> .
>
> createContextMenu();
> }
>
> private void createContextMenu()
> {
> // Create menu manager.
> MenuManager menuMgr = new MenuManager();
> menuMgr.setRemoveAllWhenShown(true);
> menuMgr.addMenuListener(new IMenuListener() {
>        public void menuAboutToShow(IMenuManager mgr) {
>                fillContextMenu(mgr);
>        }
>    });
>
> // Create menu.
> Menu menu = menuMgr.createContextMenu(viewer.getControl());
> viewer.getControl().setMenu(menu);
>
> // Register menu for extension.
> getSite().registerContextMenu(menuMgr, viewer);
> }
>
> private void fillContextMenu(IMenuManager mgr)
> {
>         MenuManager contextAssignMenu = new MenuManager("assign");
>
>         String selection = ((StructuredSelection)
> viewer.getSelection()).getFirstElement().toString();
>
> // get your stuff from the database
>         String[] teams = Database.getStuff(selection);
>
>         for (int i = 0; i < teams.length; i++)
>         {
>                 Action contextAction = new Action(
>                                 teams[i])
>                 {
>                         public void run()
>                         {
>                                 super.run();
>                         }
>                 };
>                 contextAction.setActionDefinitionId(teams[i]);
>
>                 contextAssignMenu.add(contextAction);
>         }
>
>         contextAssignMenu.add(new GroupMarker(IWorkbenchActionConstants.MB_ADDITIONS));
>
>         mgr.add(contextAssignMenu);
>         mgr.add(new GroupMarker(IWorkbenchActionConstants.MB_ADDITIONS));
> }
>
>
> i hope this help. it won't fit to your code 100% but you should grasp the idea
> behind it.
>
>
>
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