🚀 go-pugleaf

Does it exist an example program/manual pages describing
SelectionCallback,
SelectionHandler,
SelectionManager,
SelectionManagerRep.

I'm writing an text-editor, and I have some problems with selecting/deselecting
text. Currently the document is build up of class Elements which takes an
Glyph as their body.

I defined P_Background as a Background + operation background(const Color *)
 and   const Color *background()

I defined P_Character as a Character + operation foreground(const Color *)
  and const Color *foreground()

Element is a public Monoglyph.
Element(Glyph *bd, const Color *fg, const Color *bg) {
  _pb = new P_Background(bd, bg);
  _pc = bd;

  body(_pb);
  _foreground = fg;
  _background = bg;
}

Element::select() {
  _pb->background(fg);
  _pc->foreground(bg);
  <switch bg/fg>
}


No this works if I say new Element(new P_Character(..)..);
but I'm limited to building my document using P_Character's.

Suppose a programmer using my classes would want to add a HGlue,
another cursor ...

I can make Element have an extra parameter if the Glyph *bd is a P_Character.
This will make the program work, but I still wont be able to mark Elements not
containing P_Character's as selected, and I believe there is a better way to do
this

I would also like to know how a selection can be sent to/read from X11.

Even Oscar Andersen