factor/library/ui/tools/help.factor

40 lines
1.2 KiB
Factor

! Copyright (C) 2006 Slava Pestov.
! See http://factorcode.org/license.txt for BSD license.
IN: gadgets-help
USING: gadgets gadgets-borders gadgets-buttons gadgets-frames
gadgets-panes gadgets-search
gadgets-scrolling help kernel models namespaces sequences ;
TUPLE: help-gadget history ;
: show-help ( link help -- )
dup help-gadget-history add-history
help-gadget-history set-model ;
: go-home ( help -- ) "handbook" swap show-help ;
help-gadget {
{ f "Back" T{ key-down f f "b" } [ help-gadget-history go-back ] }
{ f "Forward" T{ key-down f f "f" } [ help-gadget-history go-forward ] }
{ f "Home" T{ key-down f f "h" } [ go-home ] }
} define-commands
: <help-pane> ( -- gadget )
gadget get help-gadget-history [ help ] <pane-control> ;
C: help-gadget ( -- gadget )
f <history> over set-help-gadget-history {
{ [ gadget get <toolbar> ] f f @top }
{ [ <help-pane> <scroller> ] f f @center }
} make-frame* ;
M: help-gadget gadget-title
help-gadget-history
[ "Help - " swap article-title append ] <filter> ;
M: help-gadget pref-dim* drop { 500 600 } ;
: help-tool [ help-gadget? ] [ <help-gadget> ] [ show-help ] ;
[ link? ] 1 "Browse" [ help-tool call-tool ] define-operation