[Cyan]<DATools6.1>CDCommon23>CDMenuSpecialsImpl.mesa!2

CDMenuSpecialsImpl.mesa (part of ChipNDale)

Created by Christian Jacobi, June 5, 1985 8:02:35 pm PDT

Last edited by: Christian Jacobi, August 24, 1986 8:21:47 pm PDT

DIRECTORY

CD,

CDMenuSpecials,

PopUpMenus,

Rope,

SymTab;

CDMenuSpecialsImpl: CEDAR MONITOR

IMPORTS PopUpMenus, SymTab

EXPORTS CDMenuSpecials =

BEGIN

SelectOneOf: PUBLIC PROC[ref: SymTab.Ref, label: Rope.ROPE] RETURNS [Rope.ROPE←NIL] = {

cnt: INT ← 0; menu, firstMenu: PopUpMenus.Menu; x: REF;

EachEntry: SymTab.EachPairAction = { --key: Rope.ROPE

quit ← FALSE;

IF cnt>10 THEN {

newMenu: PopUpMenus.Menu ← PopUpMenus.Create[header: label];

[] ← PopUpMenus.Entry[menu: menu, entry: "more ?", entryData: newMenu, doc: "more entries for this menu"];

menu ← newMenu;

cnt ← 0

};

cnt ← cnt+1;

[] ← PopUpMenus.Entry[menu: menu, entry: key, entryData: key]

};

menu ← firstMenu ← PopUpMenus.Create[header: label];

[] ← ref.Pairs[EachEntry];

IF menu#firstMenu THEN

[] ← PopUpMenus.Entry[menu: menu, entry: "again ?", entryData: firstMenu, doc: "show beginning entries again"];

x ← PopUpMenus.Call[firstMenu];

WHILE x#NIL AND ISTYPE[x, PopUpMenus.Menu] DO

x ← PopUpMenus.Call[NARROW[x]];

ENDLOOP;

RETURN [ NARROW[x] ];

};

END.