/
diva-preferences.ss
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/
diva-preferences.ss
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(module diva-preferences mzscheme
(require (lib "plt-match.ss")
(lib "class.ss")
(lib "framework.ss" "framework")
(lib "mred.ss" "mred")
(lib "pretty.ss")
(lib "list.ss")
(lib "plt-match.ss")
(lib "contract.ss")
"diva-central.ss"
"utilities.ss")
(provide install-diva-central-handler
enable-on-startup?
forcefully-reset-to-defaults
get-global-bindings
get-command-mode-bindings
get-insert-mode-bindings
set-global-bindings
set-command-mode-bindings
set-insert-mode-bindings
;; keymap stuff
install-global-bindings
install-command-mode-bindings
install-insert-mode-bindings
add-preference-panel)
(define default-command-mode-bindings/common
'(("return" "diva:enter")
("numpadenter" "diva:enter")
("tab" "diva:indent")
("h" "diva:before-this")
("semicolon" "diva:after-this")
("r" "diva:insert")
("n" "diva:next")
("p" "diva:previous")
("s" "diva:select")
("c" "diva:copy")
("x" "diva:cut")
("v" "diva:paste")
("u" "diva:undo")
("z" "diva:cancel")
("y" "diva:redo")
("d" "diva:delete")
("b" "diva:bring")
("s:b" "diva:push")
("s:x" "diva:exchange")
("m" "diva:mark")
("s:m" "diva:unmark")
("s:h" "diva:holder")
("t" "diva:transpose")
("." "diva:find-tag")
("o" "diva:join")
("c:[" "diva:open-square")
("[" "diva:open-square/contextual")
("(" "diva:open")
("{" "diva:open-square")
("]" "diva:close")
(")" "diva:close")
("}" "diva:close")
("space" "diva:extend-selection")
("esc" "diva:stop-extend-selection")
("w" "diva:edit-symbol")
("home" "diva:first")
("end" "diva:last")))
(define default-command-mode-bindings/qwerty
(append
'(("k" "diva:down")
("i" "diva:up")
("s:k" "diva:out")
("j" "diva:backward")
("l" "diva:forward")
("a" "diva:younger")
("e" "diva:older"))
default-command-mode-bindings/common))
(define default-command-mode-bindings/orbitouch
(append
'(("0" "diva:backward")
("9" "diva:before-this")
("8" "diva:up")
("7" "diva:after-this")
("6" "diva:forward")
("=" "diva:down")
("3" "diva:out")
("5" "previous-page")
("1" "next-page")
("2" "forward-character")
("4" "backward-character"))
default-command-mode-bindings/qwerty))
;; These keybindings were contributed by David Cabana.
(define default-command-mode-bindings/dvorak
(append
'(("j" "diva:down")
("e" "diva:up")
("s:e" "diva:out")
("q" "diva:backward")
("k" "diva:forward")
("`" "diva:younger")
("," "diva:older"))
default-command-mode-bindings/common))
(define default-global-bindings
'(("f4" "diva:toggle")))
(define default-insert-mode-bindings
'(("esc" "diva:exit")
("c:g" "diva:cancel")
("c:c" "diva:cancel")
("space" "diva:space")
("(" "diva:open")
(")" "diva:close")
("[" "diva:open-square/contextual")
("]" "diva:close-square")
("{" "diva:open-curly")
("}" "diva:close-curly")
("enter" "diva:enter")
("numpadenter" "diva:enter")
("backspace" "diva:delete-backward")
("delete" "diva:delete-forward")
("c:d" "diva:delete-forward")
("m:d" "diva:kill-word-forward")
("m:backspace" "diva:kill-word-backward")
("m:b" "diva:bring")
("tab" "diva:pass")
((alt/meta-prefix "/") "diva:magic")
("left" "diva:left")
("right" "diva:right")
("up" "diva:up")
("down" "diva:down")
("c:b" "diva:left")
("c:f" "diva:right")
("c:left" "diva:left*")
("c:right" "diva:right*")
("c:a" "diva:left*")
("c:e" "diva:right*")
("home" "diva:left*")
("end" "diva:right*")))
;; Sets up all the preferences to default values if they do not exist yet.
(define (set-default-preferences)
(preferences:set-default 'divascheme:on?
#f boolean?)
(preferences:set-default 'divascheme:preferred-keyboard-layout
'qwerty symbol?)
(preferences:set-default 'divascheme:global-bindings
default-global-bindings list?)
(preferences:set-default 'divascheme:command-mode-bindings
default-command-mode-bindings/qwerty list?)
(preferences:set-default 'divascheme:insert-mode-bindings
default-insert-mode-bindings list?))
;; forcefully-reset-to-defaults: -> void
;; This should only be called in emergencies. I'll keep this undocumented,
;; and leave it as a reserve.
(define (forcefully-reset-to-defaults)
(preferences:set 'divascheme:on? #f)
(preferences:set 'divascheme:preferred-keyboard-layout 'qwerty)
(preferences:set 'divascheme:global-bindings default-global-bindings)
(preferences:set
'divascheme:command-mode-bindings default-command-mode-bindings/qwerty)
(preferences:set
'divascheme:insert-mode-bindings default-insert-mode-bindings))
(define (get-global-bindings)
(preferences:get 'divascheme:global-bindings))
(define (get-command-mode-bindings)
(preferences:get 'divascheme:command-mode-bindings))
(define (get-insert-mode-bindings)
(preferences:get 'divascheme:insert-mode-bindings))
(define (set-global-bindings bindings)
(preferences:set 'divascheme:global-bindings bindings))
(define (set-command-mode-bindings bindings)
(preferences:set 'divascheme:command-mode-bindings bindings))
(define (set-insert-mode-bindings bindings)
(preferences:set 'divascheme:insert-mode-bindings bindings))
;; install-diva-central-handler: diva-central% -> void
;; Adds a diva-central listener that watches when
;; DivaScheme is turned on and off, and reacts by updating
;; the divascheme:on? preference.
(define (install-diva-central-handler diva-central)
(define (handler evt)
(match evt
[(struct diva-switch-on-evt ())
(preferences:set 'divascheme:on? #t)]
[(struct diva-switch-off-evt ())
(preferences:set 'divascheme:on? #f)]
[else (void)]))
(send diva-central add-listener handler))
;; enable-on-startup?: -> boolean
;; Should return true if we should turn Divascheme on.
(define (enable-on-startup?)
(preferences:get 'divascheme:on?))
;; install-keybindings: keymap (listof (list key function-name))
(define (install-keybindings keymap bindings)
(define (key->decorated-key key)
(match key
[(list 'alt/meta-prefix key)
(alt/meta-prefix key)]
[else key]))
(for-each (lambda (key&function-name)
(send keymap map-function
(key->decorated-key (first key&function-name))
(second key&function-name)))
bindings))
;; install-global-keybindings: keymap% -> void
(define (install-global-bindings keymap)
(install-keybindings keymap
(preferences:get 'divascheme:global-bindings)))
;; install-command-mode-keybindings: keymap% -> void
(define (install-command-mode-bindings keymap)
(install-keybindings keymap
(preferences:get 'divascheme:command-mode-bindings)))
;; install-insert-mode-keybindings: keymap% -> void
(define (install-insert-mode-bindings keymap)
(install-keybindings keymap
(preferences:get 'divascheme:insert-mode-bindings)))
;; add-preference-panel: diva-central% -> void
;; Attaches a DivaScheme preference panel for user-editable preferences.
(define (add-preference-panel diva-central)
;; read-string: string -> sexpr
(define (read-string str)
(let ([ip (open-input-string (format "(~a)" str))])
(first (read ip))))
;; sexp->string: sexpr -> string
(define (sexp->string sexp)
(let ([op (open-output-string)]
[sexp
(map (match-lambda [(list a b) (list a (string->symbol b))])
sexp)])
(pretty-print sexp op)
(get-output-string op)))
;; string->sexp: string -> sexpr
(define (string->sexp text)
(map (match-lambda [(list a b) (list a (symbol->string b))])
(read-string text)))
(define (id->keyboard-symbol id)
(case id
[(0) 'qwerty]
[(1) 'dvorak]
[(2) 'orbiTouch]))
(define (id->keymap id)
(case id
[(0) default-command-mode-bindings/qwerty]
[(1) default-command-mode-bindings/dvorak]
[(2) default-command-mode-bindings/orbitouch]))
(define (keyboard-symbol->id s)
(case s
[(qwerty) 0]
[(dvorak) 1]
[(orbiTouch) 2]
[else 0]))
(define (keybinding-key? datum)
(match datum
[(? string?)
#t]
[(list 'alt/meta-prefix (? string?))
#t]
[else #f]))
(define keybindings/c
(listof (list/c keybinding-key? symbol?)))
(preferences:add-panel
"DivaScheme"
(lambda (p-frame)
(define (can-read? title text)
(with-handlers
([void
(lambda (exn)
(message-box "Custom key bindings"
(format "Cannot understand the key bindings specified for the ~a.~n~a" title
(exn-message exn)))
#f)])
(contract keybindings/c (read-string text) '|the text| '|the key bindings|)
#t))
(letrec ([parent (new vertical-panel% [parent p-frame] [border 10])]
[display-choice (new choice% [label "View key bindings for "]
[choices '("Command Mode" "Insert Mode" "Globals")]
[parent parent]
[callback
(lambda (c e)
(send text-pane active-child
(case (send display-choice get-selection)
[(0) command-keybindings-text]
[(1) insert-keybindings-text]
[(2) global-keybindings-text])))])]
[text-pane (new panel:single% (parent parent))]
[command-keybindings-text
(new text-field% [label ""] [parent text-pane] [style '(multiple)]
[init-value (sexp->string (preferences:get 'divascheme:command-mode-bindings))])]
[insert-keybindings-text
(new text-field% [label ""] [parent text-pane] [style '(multiple)]
[init-value (sexp->string (preferences:get 'divascheme:insert-mode-bindings))])]
[global-keybindings-text
(new text-field% [label ""] [parent text-pane] [style '(multiple)]
[init-value (sexp->string (preferences:get 'divascheme:global-bindings))])]
[reset-panel (new horizontal-panel% [parent parent] [stretchable-height #f])]
[preferred-keyboard-layout (keyboard-symbol->id (preferences:get 'divascheme:preferred-keyboard-layout))]
[choice (new choice% [label "Set key binding to built-in layout "]
[choices '("Qwerty" "Dvorak" "orbiTouch")]
[selection preferred-keyboard-layout]
[parent reset-panel])]
[set-to-default-keybindings
(lambda ()
(set! preferred-keyboard-layout (send choice get-selection))
(send command-keybindings-text set-value (sexp->string (id->keymap (send choice get-selection))))
(send insert-keybindings-text set-value (sexp->string default-insert-mode-bindings))
(send global-keybindings-text set-value (sexp->string default-global-bindings))
(send (send command-keybindings-text get-editor) set-position 0)
(send (send insert-keybindings-text get-editor) set-position 0)
(send (send global-keybindings-text get-editor) set-position 0))]
[choices-button
(new button%
[label "Set key bindings"]
[parent reset-panel]
[callback (lambda (c e)
(set-to-default-keybindings))])])
(send text-pane active-child command-keybindings-text)
(send (send command-keybindings-text get-editor) set-position 0)
(send (send insert-keybindings-text get-editor) set-position 0)
(send (send global-keybindings-text get-editor) set-position 0)
(send insert-keybindings-text show #f)
(send global-keybindings-text show #f)
(preferences:add-can-close-dialog-callback
(lambda ()
(and (can-read? "Command Mode" (send command-keybindings-text get-value))
(can-read? "Insert Mode" (send insert-keybindings-text get-value))
(can-read? "Global Mode" (send global-keybindings-text get-value))
#t)))
(preferences:add-on-close-dialog-callback
(lambda ()
(preferences:set 'divascheme:preferred-keyboard-layout (id->keyboard-symbol preferred-keyboard-layout))
(preferences:set 'divascheme:command-mode-bindings (string->sexp (send command-keybindings-text get-value)))
(preferences:set 'divascheme:insert-mode-bindings (string->sexp (send insert-keybindings-text get-value)))
(preferences:set 'divascheme:global-bindings (string->sexp (send global-keybindings-text get-value)))
(send diva-central keymap-changed)))
parent))))
(set-default-preferences))