Problem with Variable Scoping in Rebol's Object
- by Rebol Tutorial
I have modified the rebodex app so that it can be called from rebol's console any time by typing rebodex. To show the title of the app, I need to store it in
app-title: system/script/header/title
so tha it could be used later in
view/new/title dex reform [self/app-title version]
That works but as you can see I have named the var name "app-title", but if I use "title" instead, the window caption would show weird stuff (vid code). Why ?
REBOL [
Title: "Rebodex"
Date: 23-May-2010
Version: 2.1.1
File: %rebodex.r
Author: "Carl Sassenrath"
Modification: "Rebtut"
Purpose: "A simple but useful address book contact database."
Email: %carl--rebol--com
library: [
level: 'intermediate
platform: none
type: 'tool
domain: [file-handling DB GUI]
tested-under: none
support: none
license: none
see-also: none
]
]
rebodex.context: context [
app-title: system/script/header/title
version: system/script/header/version
set 'rebodex func[][
names-path: %names.r ;data file
name-list: none
fields: [name company title work cell home car fax web email smail notes updat]
names: either exists? names-path [load names-path][
[[name "Carl Sassenrath" title "Founder" company "REBOL Technologies"
email "%carl--rebol--com" web "http://www.rebol.com"]]
]
brws: [
if not empty? web/text [
if not find web/text "http://" [insert web/text "http://"]
error? try [browse web/text]
]
]
dial: [request [rejoin ["Dial number for " name/text "? (Not implemented.)"] "Dial" "Cancel"]]
dex-styles: stylize [
lab: label 60x20 right bold middle font-size 11
btn: button 64x20 font-size 11 edge [size: 1x1]
fld: field 200x20 font-size 11 middle edge [size: 1x1]
inf: info font-size 11 middle edge [size: 1x1]
ari: field wrap font-size 11 edge [size: 1x1] with [flags: [field tabbed]]
]
dex-pane1: layout/offset [
origin 0 space 2x0 across
styles dex-styles
lab "Name" name: fld bold return
lab "Title" title: fld return
lab "Company" company: fld return
lab "Email" email: fld return
lab "Web" brws web: fld return
lab "Address" smail: ari 200x72 return
lab "Updated" updat: inf 200x20 return
] 0x0
updat/flags: none
dex-pane2: layout/offset [
origin 0 space 2x0 across
styles dex-styles
lab "Work #" dial work: fld 140 return
lab "Home #" dial home: fld 140 return
lab "Cell #" dial cell: fld 140 return
lab "Alt #" dial car: fld 140 return
lab "Fax #" fax: fld 140 return
lab "Notes" notes: ari 140x72 return
pad 136x1 btn "Close" #"^q" [store-entry save-file unview]
] 0x0
dex: layout [
origin 8x8
space 0x1
styles dex-styles
srch: fld 196x20 bold
across
rslt: list 180x150 [
nt: txt 178x15 middle font-size 11 [
store-entry curr: cnt find-name nt/text update-entry unfocus show dex
]
]
supply [
cnt: count + scroll-off
face/text: ""
face/color: snow
if not n: pick name-list cnt [exit]
face/text: select n 'name face/font/color: black
if curr = cnt [face/color: system/view/vid/vid-colors/field-select]
]
sl: slider 16x150 [scroll-list] return
return
btn "New" #"^n" [new-name]
btn "Del" #"^d" [delete-name unfocus update-entry search-all show dex]
btn "Sort" [sort names sort name-list show rslt]
return
at srch/offset + (srch/size * 1x0)
bx1: box dex-pane1/size
bx2: box dex-pane2/size
return
]
bx1/pane: dex-pane1/pane
bx2/pane: dex-pane2/pane
rslt/data: []
this-name: first names
name-list: copy names
curr: none
search-text: ""
scroll-off: 0
srch/feel: make srch/feel [
redraw: func [face act pos][
face/color: pick face/colors face system/view/focal-face
if all [face = system/view/focal-face face/text search-text] [
search-text: copy face/text search-all
if 1 = length? name-list [this-name: first name-list update-entry show dex]
]
]
]
update-file: func [data] [
set [path file] split-path names-path
if not exists? path [make-dir/deep path]
write names-path data
]
save-file: has [buf] [
buf: reform [{REBOL [Title: "Name Database" Date:} now "]^/[^/"]
foreach n names [repend buf [mold n newline]]
update-file append buf "]"
]
delete-name: does [
remove find/only names this-name
if empty? names [append-empty]
save-file
new-name
]
clean-names: function [][n][
forall names [
if any [empty? first names none? n: select first names 'name empty? n][
remove names
]
]
names: head names
]
search-all: function [] [ent flds] [
clean-names
clear name-list
flds: [name]
either empty? search-text [insert name-list names][
foreach nam names [
foreach word flds [
if all [ent: select nam word find ent search-text][
append/only name-list nam
break
]
]
]
]
scroll-off: 0
sl/data: 0
resize-drag
scroll-list
curr: none
show [rslt sl]
]
new-name: does [
store-entry
clear-entry
search-all
append-empty
focus name
; update-entry
]
append-empty: does [append/only names this-name: copy []]
find-name: function [str][] [
foreach nam names [
if str = select nam 'name [
this-name: nam
break
]
]
]
store-entry: has [val ent flag] [
flag: 0
if not empty? trim name/text [
foreach word fields [
val: trim get in get word 'text
either ent: select this-name word [
if ent val [insert clear ent val flag: flag + 1]
][
if not empty? val [repend this-name [word copy val] flag: flag + 1]
]
if flag = 1 [flag: 2 updat/text: form now]
]
if not zero? flag [save-file]
]
]
update-entry: does [
foreach word fields [
insert clear get in get word 'text any [select this-name word ""]
]
show rslt
]
clear-entry: does [
clear-fields bx1
clear-fields bx2
updat/text: form now
unfocus
show dex
]
show-names: does [
clear rslt/data
foreach n name-list [
if n/name [append rslt/data n/name]
]
show rslt
]
scroll-list: does [
scroll-off: max 0 to-integer 1 + (length? name-list) - (100 / 16) * sl/data
show rslt
]
do resize-drag: does [sl/redrag 100 / max 1 (16 * length? name-list)]
center-face dex
new-name
focus srch
show-names
view/new/title dex reform [app-title version]
insert-event-func [
either all [event/type = 'close event/face = dex][
store-entry
unview
][event]
]
do-events
]
]
