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############################################################################
#
# vibradio.icn -- procedures for defining a radio button object
#
############################################################################
#
# This file is in the public domain.
#
############################################################################
$include "vibdefn.icn"
global RB_starty, RADIO_TALK, RADIO_VIDGET
##########################################################################
# radio_button_obj:
# v : vidget used for drawing radio button
# proc : name of user callback procedure
# id : unique means of identifying instance
# x,y,w,h : bounding box
# focus : should focus lines be drawn around this object?
# alts : a list of button labels making up the radio button object
##########################################################################
record radio_button_obj(v, proc, id, x, y, w, h, focus, alts)
##########################################################################
# create_radio_button() creates a radio button instance and draws the
# button if it is a first class object.
##########################################################################
procedure create_radio_button(x, y, alts)
local r, id
id := next_id("radio_button")
r := radio_button_obj(, "radio_button_cb" || id, "radio_button" || id,
x, y, 0, 0, 0, alts)
r.v := Vradio_buttons(ROOT, x, y, APPWIN, alts, , id, V_DIAMOND_NO)
r.w := r.v.aw
r.h := r.v.ah
VRemove(ROOT, r.v, 1)
return r
end
##########################################################################
# update_radio_bb() disallows resizing of a radio button object.
##########################################################################
procedure update_radio_bb(object)
object.w := object.v.aw
object.h := object.v.ah
end
##########################################################################
# draw_radio_button() draws the given radio button object.
##########################################################################
procedure draw_radio_button(r)
VDraw(r.v)
return r
end
##########################################################################
# load_radio_button() restores a radio button object from session code.
##########################################################################
procedure load_radio_button(r, o)
r.alts := o.etc
r.v := Vradio_buttons(ROOT, r.x, r.y, APPWIN, r.alts, , r.id, V_DIAMOND_NO)
r.w := r.v.aw
r.h := r.v.ah
VRemove(ROOT, r.v, 1)
end
##########################################################################
# save_radio_button() augments the record for saving a radio_button object.
##########################################################################
procedure save_radio_button(r, o)
r.typ := "Choice"
r.num := *o.alts
r.etc := copy(o.alts)
return
end
##########################################################################
# radio_button_atts() defines the attribute sheet template for a radio
# button object.
##########################################################################
procedure radio_button_atts()
local tempy
RADIO_TALK := Vdialog(&window, PAD, PAD)
tempy := 0
VRegister(RADIO_TALK,
Vtext(&window, "ID: ",, 1, TEXTCHARS, IDMASK), 0, tempy)
tempy +:= PAD
VRegister(RADIO_TALK,
Vtext(&window, "callback: ",, 3, TEXTCHARS, CBMASK), 0, tempy)
tempy +:= (3 * PAD)/2
VRegister(RADIO_TALK, Vtext(&window, " x: ",, 4, 3, &digits), 0, tempy)
tempy +:= PAD
VRegister(RADIO_TALK, Vtext(&window, " y: ",, 5, 3, &digits), 0, tempy)
VFormat(RADIO_TALK)
RB_starty := tempy
end
##########################################################################
# display_radio_button_atts() displays the attribute sheet with the current
# attributes for the given radio button instance.
##########################################################################
procedure display_radio_button_atts(object)
local tempy, i, send_data, data, new, v, ok, nok, reg_list, ins_list, l
initial radio_button_atts()
new := copy(object)
new.y -:= CANVASY
new.alts := copy(object.alts)
repeat {
reg_list := []
ins_list := []
tempy := RB_starty
# construct text fields and "add" and "del" buttons
every i := 0 to *new.alts do {
tempy +:= PAD
v := Vbutton(&window, "add", radio_cb, V_OK, , 28, 17)
VInsert(RADIO_TALK, v, 0, tempy + PAD / 2)
put(ins_list, v)
if i = 0 then
next
v := Vbutton(&window, "del", radio_cb, V_OK, , 28, 17)
VInsert(RADIO_TALK, v, 35 + TEXTWIDTH, tempy + 1)
put(ins_list, v)
v := Vtext(&window, "", , 5 + i, TEXTCHARS, LBMASK)
VRegister(RADIO_TALK, v, 35, tempy)
put(reg_list, v)
}
# add "Okay" and "Cancel"
tempy +:= 2 * PAD
ok := Vbutton(&window, "Okay", , V_OK, , 50, 30)
nok := Vbutton(&window, "Cancel", , V_CANCEL, , 50, 30)
VInsert(RADIO_TALK, ok, TEXTWIDTH / 2 - 30, tempy)
VInsert(RADIO_TALK, nok, TEXTWIDTH / 2 + 40, tempy)
put(ins_list, ok, nok)
# post the dialog
RADIO_VIDGET := &null
VFormat(RADIO_TALK)
send_data := [new.id, new.proc, new.x, new.y] ||| new.alts
data := VOpenDialog(RADIO_TALK, , "radio_dialog", send_data, "Okay")
every VUnregister(RADIO_TALK, !reg_list)
every VRemove(RADIO_TALK, !ins_list, 1)
if data === send_data then
fail # cancelled
# save new values
new.id := strip(get(data))
new.proc := strip(get(data))
new.x := get(data)
new.y := get(data)
every !new.alts := get(data)
# if "add" or "del" was pressed, process it and loop to re-post dialog
if \RADIO_VIDGET then {
l := []
every v := reg_list[1 to *new.alts] do {
if v.ay - PAD < RADIO_VIDGET.ay-1 < v.ay then
put(l, "")
if v.ay ~= RADIO_VIDGET.ay-1 then
put(l, v.data)
}
if RADIO_VIDGET.ay-1 > reg_list[*new.alts].ay | *l = 0 then
put(l, "")
new.alts := l
next
}
# check for legal field values
if illegal(new.id, "ID", "s") |
illegal(new.proc, "Callback", "p") |
illegal(new.x, "X", "i") |
illegal(new.y, "Y", "i")
then
next
# everything is valid
object.proc := new.proc
object.id := new.id
object.alts := new.alts
unfocus_object(object)
EraseArea(object.x, object.y, object.w, object.h)
object.v := Vradio_buttons(ROOT,
object.x, object.y, APPWIN, new.alts, , object.v.id, V_DIAMOND_NO)
object.w := object.v.aw
object.h := object.v.ah
VRemove(ROOT, object.v, 1)
move_object(object, new.x, new.y + CANVASY, object.w, object.h)
focus_object(object)
break
}
end
##########################################################################
# radio_cb is called when an "add" or "del" button is pressed.
##########################################################################
procedure radio_cb(v)
RADIO_VIDGET := v
end
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