命令转到同级 SWT 控件

Question

For Bndtools, I've created a subclass of PackageExplorerPart and added a (staggeringly useful) search Text control.

However, when the Text control is selected/in focus, and I paste, the pasted content goes to the TreeView and creates a snippet project, very annoying.

I debugged the code but can only find that a PASTE Command handler is always going to the TreeView and not to the control in focus. Unfortunately, I cannot find where this is configured. I tried understanding the documentation but could not figure out where to look.

So basically I need to know how to make sure my Text component always is the target of the PASTE handler.

Answer 1

Any workbench part in Eclipse gets a chance to register global action handlers via either the IViewSite or IEditorSite getActionBars() method. If you subclass another part, you would need to make sure that after the super class has registered its handlers you reassign whatever actions you wish with your own handlers.

So in your case, when you want to redirect the 'paste' to your Text control, you could do something like this:

IActionBars actionBars = getViewSite().getActionBars();

IAction originalPaste = actionBars.getGlobalActionHandler(ActionFactory.PASTE.getId());

actionBars.setGlobalActionHandler(ActionFactory.PASTE.getId(), new Action() {
    @Override
    public void runWithEvent(Event event) {
        Text filterText = filterPart.getFilterControl();
        if (Objects.equals(event.widget, filterText)) {
            filterText.paste();
        } else {
            originalPaste.runWithEvent(event);
        }
    }
});