rascal - pack figure doesn't work with computeFigure -


i seem have problem pack-figure , using computefigure.

below code reproduce behaviour have.

public void main() {     bool redraw = false;     str boxwidthprop = "";      figure topbar = hcat([text("width"), combo(["1", "2"], void(str s){ boxwidthprop = s; }, hshrink(0.1))     , button("redraw", void() {redraw = true; }, resizable(false))], vshrink(0.05), hgap(5));      figure gettreemap() {     return computefigure(bool () { bool temp = redraw; redraw = false; return temp; }, figure() {                 int sz = 20;                 if (boxwidthprop == "2")                     sz = 100;                 b = box(size(sz, sz), fillcolor("red"), resizable(false));                 t = text(str() {return "w: <sz>; prop: <boxwidthprop>"; });                 figures boxes = [];                 boxes += b;                 boxes += t;                  //return pack(boxes, std(gap(5)));                 return vcat([t,b]);             });     }      vc = vcat([topbar, gettreemap()]);     render(vc); }

when running code, new screen combo, button, label , box.

  • when change combo you'll see value of label change.
  • when click button box change (it's size).
  • when change combo again, you'll see label change , clicking - button it's job again.
  • this can continue.

now uncomment line "return pack ..." , comment "return vcat". run code again.

you see same screen.

  • changing combo works.
  • clicking button change box.
  • but on stops.
  • changing combo, nothing.
  • clicking button, nothing.

my guess here there problem pack-figure. i'm total newbie rascal (and eclipse), might i'm missing something.


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