ref: 53aac62a54ebbcc1781c0000d3e2384ed038c7bb
dir: /appl/wm/ftree/items.m/
Items: module {
PATH: con "/dis/lib/ftree/items.dis";
Item: adt {
name: string; # tag held in common by all canvas items in this Item.
r: Rect; # relative to parent's Item when stored in children
attach: Point; # attachment point relative to r.min
eq: fn(i: self Item, j: Item): int;
addpt: fn(i: self Item, p: Point): Item;
subpt: fn(i: self Item, p: Point): Item;
};
Expander: adt {
titleitem: Item;
expanded: int;
children: array of Item;
win: ref Tk->Toplevel;
cvs: string;
spotid: int;
new: fn(win: ref Tk->Toplevel, cvs: string): ref Expander;
make: fn(e: self ref Expander, it: Item): Item;
event: fn(e: self ref Expander, it: Item, ev: string): Item;
childrenchanged: fn(e: self ref Expander, it: Item): Item;
};
init: fn();
maketext: fn(win: ref Tk->Toplevel, cvs: string, name: string, text: string): Item;
};