Santy, Michael wrote:
> The Gadget approach is *exactly* what I'm needing.
>
> I was able to implement a subclass of TextLabelVP, return it from a
> implementation of GadgetFactory, and setup a CSS rule to include it in
> the editor. It behaved visually like I would expect, however I could
> not get it to respond to any events. I implemented the grabsMouseButton
> and handleMouseEvent as the documentation specified, but neither of
> these methods were ever being called. I even overrode the focusGained
> and focusLost method to see if this gadget was responding to any editor
> events, and neither of these methods are ever being called as well.
>
> Below is a listing of the relevant code. The print statement in the
> MyGadget constructor is being called and the gadget is included in the
> document. When I double-click on the "My Gadget" label in the document,
> nothing happens.
>
> Can anyone please shed some light on what I might be doing wrong?
>
>
> public class MyGadgetFactory implements GadgetFactory {
>
> public Gadget createGadget(StyledElementView view, int role, Style style,
> StyleValue[] parameters, StyledViewFactory viewFactory) {
>
> return new MyGadget(style, "My Gadget", view, role);
>
> }
> }
>
> public class MyGadget extends TextLabelVP {
>
> public MyGadget(Style style, String text,
> StyledElementView view, int role) {
> super(style, text, view, role);
>
> Node node = view.getModel();
>
> System.err.println("MyGadget::MyGadget() node: "+node);
> }
>
> public boolean grabsMouseButton(MouseEvent e) {
> System.err.println("My::grabsMouseButton()");
> boolean rv = false;
> if(MouseEvent.BUTTON1==e.getButton() && 2==e.getClickCount()) {
> rv = true; //double left-click
> }
> return rv;
> }
>
> public void handleMouseEvent(MouseEvent e) {
> System.err.println("MyGadget::handleMouseEvent()");
> }
> }
>
This should work:
---
public boolean grabsMouseButton(MouseEvent e) {
System.err.println("My::grabsMouseButton()" + e);
return (MouseEvent.BUTTON1==e.getButton());
}
public void handleMouseEvent(MouseEvent e {
DocumentView docView = (DocumentView) getRoot();
switch (e.getClickCount())
case 1:
// Not strictly needed but consistent with the other
// StyledElementViewParts.
docView.selectNode(node);
break;
case 2:
System.err.println("MyGadget::handleMouseEvent()" + e);
break;
}
}
---
Explanations:
When grabsMouseButton returns true for a mouse event about button #1,
this means: direct *all* subsequent mouse events (press, release, drag,
click) about button #1 to my handleMouseEvent methods.
When grabsMouseButton returns false for a mouse event about button #1,
then, may be the parent of the Gadget, will process all mouse events
about button #1, and if not, the grand-parent, and so on, until you
reach the root Gadget.
(The root Gadget is a com.xmlmind.xmledit.view.DocumentView (or a
com.xmlmind.xmledit.styledview.StyledDocumentView).
A com.xmlmind.xmledit.view.DocumentView manages mouse event by using
much more sophisticated means than grabsMouseButton/handleMouseEvent. It
uses com.xmlmind.xmledit.gadget.Bindings:
http://www.xmlmind.com/xmleditor/_distrib/doc/api/com/xmlmind/xmledit/gadget/Bindings.html
But this is unrelated to your problem.)
