/usr/share/uim/generic.scm is in libuim-data 1:1.7.1-3ubuntu1.
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;;; Copyright (c) 2003-2011 uim Project http://code.google.com/p/uim/
;;;
;;; All rights reserved.
;;;
;;; Redistribution and use in source and binary forms, with or without
;;; modification, are permitted provided that the following conditions
;;; are met:
;;; 1. Redistributions of source code must retain the above copyright
;;; notice, this list of conditions and the following disclaimer.
;;; 2. Redistributions in binary form must reproduce the above copyright
;;; notice, this list of conditions and the following disclaimer in the
;;; documentation and/or other materials provided with the distribution.
;;; 3. Neither the name of authors nor the names of its contributors
;;; may be used to endorse or promote products derived from this software
;;; without specific prior written permission.
;;;
;;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND
;;; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
;;; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
;;; ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE
;;; FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
;;; DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
;;; OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
;;; HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
;;; LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
;;; OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
;;; SUCH DAMAGE.
;;;;
(require "util.scm")
(require "rk.scm")
(require-custom "generic-key-custom.scm")
(require-custom "generic-custom.scm")
;; widgets and actions
;; widgets
(define generic-widgets '(widget_generic_input_mode))
;; default activity for each widgets
(define default-widget_generic_input_mode 'action_generic_off)
;; actions of widget_generic_input_mode
(define generic-input-mode-actions
'(action_generic_off
action_generic_on))
;;; implementations
(define ascii-rule
(map (compose (lambda (entry)
(list (list entry) entry))
list
charcode->string)
(iota 95 32)))
(define generic-prepare-activation
(lambda (gc)
(let ((rkc (generic-context-rk-context gc)))
(rk-flush rkc)
(generic-update-preedit gc))))
(register-action 'action_generic_off
(lambda (gc)
(list
'off
"-"
(N_ "off")
(N_ "Direct Input Mode")))
(lambda (gc)
(not (generic-context-on gc)))
(lambda (gc)
(generic-prepare-activation gc)
(generic-context-set-on! gc #f)))
(register-action 'action_generic_on
(lambda (gc)
(let* ((im (generic-context-im gc))
(name (symbol->string (im-name im))))
(list
'on
"O"
(N_ "on")
(string-append name (N_ " Mode")))))
(lambda (gc)
(generic-context-on gc))
(lambda (gc)
(generic-prepare-activation gc)
(generic-context-set-on! gc #t)))
;; Update widget definitions based on action configurations. The
;; procedure is needed for on-the-fly reconfiguration involving the
;; custom API
(define generic-configure-widgets
(lambda ()
(register-widget 'widget_generic_input_mode
(activity-indicator-new generic-input-mode-actions)
(actions-new generic-input-mode-actions))))
(define generic-context-rec-spec
(append
context-rec-spec
'((rk-context #f)
(rk-nth 0)
(on #f)
(candidate-op-count 0)
(raw-commit #f)
(multi-cand-input #f)
(cands ()))))
(define-record 'generic-context generic-context-rec-spec)
(define generic-context-new-internal generic-context-new)
(define generic-context-new
(lambda (id im rule back)
(let ((gc (generic-context-new-internal id im))
(rkc (rk-context-new rule #f back)))
(generic-context-set-widgets! gc generic-widgets)
(generic-context-set-rk-context! gc rkc)
gc)))
(define generic-context-flush
(lambda (pc)
(generic-context-set-rk-nth! pc 0)
(generic-context-set-candidate-op-count! pc 0)
(generic-context-set-multi-cand-input! pc #f)
(generic-context-set-cands! pc '())
(rk-flush (generic-context-rk-context pc))))
(define generic-update-preedit
(lambda (pc)
(if (generic-context-raw-commit pc)
(generic-context-set-raw-commit! pc #f)
(let* ((rkc (generic-context-rk-context pc))
(cands (generic-context-cands pc))
(n (generic-context-rk-nth pc)))
(im-clear-preedit pc)
(im-pushback-preedit
pc preedit-reverse
(if (and
(not (null? cands))
(> n -1))
(if (pair? (car cands))
(car (nth n cands))
(nth n cands))
(rk-pending rkc)))
(im-update-preedit pc)))))
(define generic-commit-raw
(lambda (pc)
(im-commit-raw pc)
(generic-context-set-raw-commit! pc #t)))
(define generic-commit
(lambda (pc)
(let ((rkc (generic-context-rk-context pc))
(cands (generic-context-cands pc))
(n (generic-context-rk-nth pc)))
(if (not (null? cands))
(begin
(if (> n -1)
(if (pair? (car cands))
(im-commit pc (car (nth (generic-context-rk-nth pc) cands)))
(im-commit pc (nth (generic-context-rk-nth pc) cands)))
;(im-commit pc (rk-pending rkc))
)
(im-deactivate-candidate-selector pc)
(generic-context-flush pc))
(begin
(im-commit-raw pc)
(rk-flush rkc))))))
(define generic-commit-by-numkey
(lambda (pc key)
(let* ((rkc (generic-context-rk-context pc))
(cands (generic-context-cands pc))
(n (generic-context-rk-nth pc))
(nr (length cands))
(cur-page (if (= generic-nr-candidate-max 0)
0
(quotient n generic-nr-candidate-max)))
(pageidx (- (numeric-ichar->integer key) 1))
(compensated-pageidx (cond
((< pageidx 0) ; pressing key_0
(+ pageidx 10))
(else
pageidx)))
(idx (+ (* cur-page generic-nr-candidate-max) compensated-pageidx)))
(if (< idx nr)
(begin
(if (pair? (car cands))
(im-commit pc (car (nth idx cands)))
(im-commit pc (nth idx cands)))
(im-deactivate-candidate-selector pc)
(generic-context-flush pc)
#t)
#f))))
(define generic-proc-input-state-without-preedit
(lambda (pc key state rkc)
(cond
((generic-off-key? key state)
(generic-context-set-on! pc #f)
#f)
((generic-backspace-key? key state)
(generic-commit-raw pc)
#f)
((symbol? key)
(generic-commit-raw pc)
#f)
((and (modifier-key-mask state)
(not (shift-key-mask state)))
(generic-commit-raw pc)
#f)
(else
#t))))
(define generic-proc-input-state-with-preedit
(lambda (pc key state rkc)
(cond
((generic-off-key? key state)
(let ((cands (generic-context-cands pc))
(n (generic-context-rk-nth pc)))
(if (and
(not (null? cands))
(> n -1))
(begin
(if (pair? (car cands))
(im-commit pc (car (nth n cands)))
(im-commit pc (nth n cands)))
(generic-context-flush pc))
(if (not (string=? (rk-pending rkc) "")) ;; flush pending rk
(generic-context-flush pc)))
(generic-context-set-on! pc #f)
#f))
((generic-prev-candidate-key? key state)
(generic-handle-convert-key pc key state)
#f)
((generic-next-candidate-key? key state)
(generic-handle-convert-key pc key state)
#f)
((generic-backspace-key? key state)
(rk-backspace rkc)
(generic-context-set-rk-nth! pc 0)
(generic-update-input-state-cands pc key state
rkc (rk-context-seq rkc) #f)
#f)
((generic-commit-key? key state)
(generic-commit pc)
#f)
((generic-cancel-key? key state)
(generic-context-flush pc)
#f)
((symbol? key)
(generic-commit pc)
(im-commit-raw pc)
#f)
((and (modifier-key-mask state)
(not (shift-key-mask state)))
(generic-commit pc)
(im-commit-raw pc)
#f)
(else
#t))))
(define generic-flatten
(lambda (lst)
(cond ((null? lst) '())
((list? (car lst))
(append (generic-flatten (car lst))
(generic-flatten (cdr lst))))
(else
(cons (car lst) (generic-flatten (cdr lst)))))))
(define generic-update-input-state-cands
(lambda (pc key state rkc prev-seq res)
(if (not (rk-partial? rkc))
;; exact match or no-match
(let* ((cs (rk-current-seq rkc))
(cands (if cs (cadr cs) '())))
(generic-context-set-cands! pc cands)
(if cs
(if (null? (cdr cands))
;; single candidate
(begin
(im-commit pc (nth 0 cands))
(generic-context-flush pc)
(im-deactivate-candidate-selector pc))
;; show candidates for the Pinyin like input method
(if (and generic-use-candidate-window?
generic-show-candidate-implicitly?)
(begin
(im-activate-candidate-selector
pc (length cands) generic-nr-candidate-max)
(im-select-candidate pc 0)
(generic-context-set-multi-cand-input! pc #t)
(generic-context-set-candidate-op-count!
pc
(+ 1 (generic-context-candidate-op-count pc)))))))
;; commit no-matching key
(if (and
(not cs)
(null? (rk-context-seq rkc))
(or
(null? prev-seq)
res)
(not (generic-backspace-key? key state))) ;; mmm...
(im-commit-raw pc)))
;; partial match, including exact match
(let* ((ret (if generic-show-prediction-candidates?
(rk-cands-with-minimal-partial rkc)
'()))
(expand-cands
(lambda (lst)
(map (lambda (x)
(let ((head (car x))
(tail (cdr x)))
(map (lambda (y) (cons y tail)) head))) lst)))
(cands/keys (generic-flatten (expand-cands ret))))
(if (not generic-show-prediction-candidates?)
(let* ((cs (rk-current-seq rkc))
(cands (if cs (cadr cs) '())))
(set! cands/keys cands)))
(generic-context-set-cands! pc cands/keys)
(if (not (null? cands/keys))
;; show candidates even in input-state
(begin
(if (and generic-use-candidate-window?
generic-show-candidate-implicitly?)
(begin
(im-activate-candidate-selector
pc (length cands/keys) generic-nr-candidate-max)
(if (and
generic-show-prediction-candidates?
(not (string=? (cdr (car cands/keys)) "")))
(generic-context-set-rk-nth! pc -1)
(begin
(generic-context-set-rk-nth! pc 0)
(im-select-candidate pc 0)
(generic-context-set-candidate-op-count! pc (+ 1 (generic-context-candidate-op-count pc)))))
(generic-context-set-multi-cand-input! pc #t)))))))))
(define generic-proc-input-state
(lambda (pc key state)
(let* ((rkc (generic-context-rk-context pc))
(seq (rk-context-seq rkc))
(res #f))
(and
(if (string=? (rk-pending rkc) "")
(generic-proc-input-state-without-preedit pc key state rkc)
(generic-proc-input-state-with-preedit pc key state rkc))
(begin
(set! res
(rk-push-key!
rkc
(charcode->string key)))
(if res
(begin
(im-commit pc (nth (generic-context-rk-nth pc) res))
(generic-context-set-rk-nth! pc 0)
(generic-context-set-candidate-op-count! pc 0)
(generic-context-set-cands! pc '())
(im-deactivate-candidate-selector pc)))
(generic-update-input-state-cands pc key state rkc seq res))))))
(define generic-proc-specific-multi-cand-input-state
(lambda (pc key state rkc)
(cond
((generic-off-key? key state)
(let ((cands (generic-context-cands pc))
(n (generic-context-rk-nth pc)))
(if (and
(not (null? cands))
(> n -1))
(begin
(if (pair? (car cands))
(im-commit pc (car (nth n cands)))
(im-commit pc (nth n cands)))
(generic-context-flush pc))
(if (not (string=? (rk-pending rkc) "")) ;; flush pending rk
(generic-context-flush pc)))
(generic-context-set-on! pc #f)
(im-deactivate-candidate-selector pc)
#f))
((generic-prev-candidate-key? key state)
(generic-handle-convert-key pc key state)
#f)
((generic-next-candidate-key? key state)
(generic-handle-convert-key pc key state)
#f)
((generic-prev-page-key? key state)
(generic-handle-convert-key pc key state)
#f)
((generic-next-page-key? key state)
(generic-handle-convert-key pc key state)
#f)
((generic-backspace-key? key state)
(rk-backspace rkc)
(generic-context-set-rk-nth! pc 0)
(generic-update-multi-cand-state-cands pc key state rkc)
#f)
((generic-commit-key? key state)
(generic-context-set-multi-cand-input! pc #f)
(generic-commit pc)
#f)
((generic-cancel-key? key state)
(im-deactivate-candidate-selector pc)
(generic-context-flush pc)
#f)
((symbol? key)
(generic-context-set-multi-cand-input! pc #f)
(generic-commit pc)
(im-commit-raw pc)
#f)
((and generic-commit-candidate-by-numeral-key?
(ichar-numeric? key)
(not (rk-expect-key? rkc (charcode->string key))))
(if (generic-commit-by-numkey pc key)
(generic-context-set-multi-cand-input! pc #f))
#f)
((and (modifier-key-mask state)
(not (shift-key-mask state)))
(generic-context-set-multi-cand-input! pc #f)
(generic-commit pc)
(im-commit-raw pc)
#f)
(else
#t))))
(define generic-update-multi-cand-state-cands
(lambda (pc key state rkc)
(if (not (rk-partial? rkc)) ;; exact match or no-match
(let* ((cs (rk-current-seq rkc))
(cands (if cs (cadr cs) '())))
(generic-context-set-cands! pc cands)
(generic-context-set-rk-nth! pc 0)
(if cs
(if (null? (cdr cands))
(begin
(im-commit pc
(nth 0 cands))
(generic-context-flush pc)
(im-deactivate-candidate-selector pc))
;; show candidates for the Pinyin like input method
(if generic-use-candidate-window?
(begin
(im-activate-candidate-selector
pc (length cands) generic-nr-candidate-max)
(im-select-candidate pc 0))))
;; perhaps backspace to clear preedit
(begin
(im-deactivate-candidate-selector pc)
(generic-context-flush pc))))
;; partial match, including exact match
(let* ((ret (if generic-show-prediction-candidates?
(rk-cands-with-minimal-partial rkc)
'()))
(expand-cands
(lambda (lst)
(map (lambda (x)
(let ((head (car x))
(tail (cdr x)))
(map (lambda (y) (cons y tail)) head))) lst)))
(cands/nexts (generic-flatten (expand-cands ret))))
(if (not generic-show-prediction-candidates?)
(let* ((cs (rk-current-seq rkc))
(cands (if cs (cadr cs) '())))
(set! cands/nexts cands)))
(generic-context-set-cands! pc cands/nexts)
(if (not (null? cands/nexts))
(if (not (null? (cdr cands/nexts)))
(begin
(im-activate-candidate-selector
pc (length cands/nexts) generic-nr-candidate-max)
(if (and
generic-show-prediction-candidates?
(not (string=? (cdr (car cands/nexts)) "")))
(generic-context-set-rk-nth! pc -1)
(begin
(generic-context-set-rk-nth! pc 0)
(im-select-candidate pc 0))))
;; single candidate
(begin
(im-deactivate-candidate-selector pc)
(generic-context-set-rk-nth! pc 0)
(generic-context-set-candidate-op-count! pc 0)
(generic-context-set-multi-cand-input! pc #f)))
;; no-candidate
(begin
(im-deactivate-candidate-selector pc)
(generic-context-set-candidate-op-count! pc 0)
(generic-context-set-multi-cand-input! pc #f)))))))
(define generic-proc-multi-cand-input-state
(lambda (pc key state)
(let* ((rkc (generic-context-rk-context pc))
(seq (rk-context-seq rkc))
(cands (generic-context-cands pc))
(res #f))
(and
(generic-proc-specific-multi-cand-input-state pc key state rkc)
(begin
(set! res
(rk-push-key!
rkc
(charcode->string key)))
(if res
;; commit matched word and continue new rk
(begin
(if (< (generic-context-rk-nth pc) (length res))
(im-commit pc (nth (generic-context-rk-nth pc) res))
;(im-commit pc (car (nth (generic-context-rk-nth pc) cands)))
;(im-commit pc (nth 0 res))
) ;; XXX: what is the expected behavior here?
(generic-context-set-rk-nth! pc 0)
(generic-context-set-candidate-op-count! pc 0)
(im-deactivate-candidate-selector pc)
(generic-context-set-multi-cand-input! pc #f)
(generic-update-input-state-cands pc key state rkc seq res))
(generic-update-multi-cand-state-cands pc key state rkc)))))))
(define generic-handle-convert-key
(lambda (pc key state)
(let* ((rkc (generic-context-rk-context pc))
(n (generic-context-rk-nth pc))
(cands (generic-context-cands pc))
(nr (length cands)))
(if (and
(not (generic-context-multi-cand-input pc))
(not (null? cands))
(not (null? (cdr cands))))
(generic-context-set-multi-cand-input! pc #t))
(and
(if (generic-prev-candidate-key? key state)
(if (not (null? cands))
(if (pair? (cdr cands))
;; multiple candidates
(begin
(set! n (- n 1))
(generic-context-set-rk-nth! pc n)
(if (< n 0)
(begin
(generic-context-set-rk-nth! pc (- nr 1))
(set! n (- nr 1))))
(generic-context-set-candidate-op-count!
pc
(+ 1 (generic-context-candidate-op-count pc)))
(if (and
(= (generic-context-candidate-op-count pc)
generic-candidate-op-count)
generic-use-candidate-window?)
(im-activate-candidate-selector
pc nr generic-nr-candidate-max))
(if (and
(>= (generic-context-candidate-op-count pc)
generic-candidate-op-count)
generic-use-candidate-window?)
(im-select-candidate pc n))
#f)
;; single candidate
(begin
(generic-commit pc)
#f))
;; no candidate
(begin
(generic-context-flush pc)
#f))
#t)
(if (generic-next-candidate-key? key state)
(if (not (null? cands))
(if (pair? (cdr cands))
;; multiple candidates
(begin
(generic-context-set-rk-nth! pc (+ 1 n))
(if (<= nr (+ n 1))
(generic-context-set-rk-nth! pc 0))
(generic-context-set-candidate-op-count!
pc
(+ 1 (generic-context-candidate-op-count pc)))
(if (and
(= (generic-context-candidate-op-count pc)
generic-candidate-op-count)
generic-use-candidate-window?)
(im-activate-candidate-selector pc nr
generic-nr-candidate-max))
(if (and
(>= (generic-context-candidate-op-count pc)
generic-candidate-op-count)
generic-use-candidate-window?)
(begin
(if (>= (+ n 1) nr)
(set! n -1))
(im-select-candidate pc (+ n 1))))
#f)
;; single candidate
(begin
(generic-commit pc)
#f))
;; no candidate
(begin
(generic-context-flush pc)
#f))
#t)
(if (and (generic-prev-page-key? key state)
(<= generic-candidate-op-count
(generic-context-candidate-op-count pc))
generic-use-candidate-window?)
(begin
(im-shift-page-candidate pc #f)
#f)
#t)
(if (and (generic-next-page-key? key state)
(<= generic-candidate-op-count
(generic-context-candidate-op-count pc))
generic-use-candidate-window?)
(begin
(im-shift-page-candidate pc #t)
#f)
#t)))))
(define generic-proc-off-mode
(lambda (pc key state)
(and
(if (generic-on-key? key state)
(begin
(generic-context-set-on! pc #t)
#f)
#t)
;;
(generic-commit-raw pc))))
(define generic-key-press-handler
(lambda (pc key state)
(if (ichar-control? key)
(im-commit-raw pc)
(if (generic-context-on pc)
(if (generic-context-multi-cand-input pc)
(generic-proc-multi-cand-input-state pc key state)
(generic-proc-input-state pc key state))
(generic-proc-off-mode pc key state)))
(generic-update-preedit pc)
()))
(define generic-key-release-handler
(lambda (pc key state)
(if (or (ichar-control? key)
(not (generic-context-on pc)))
;; don't discard key release event for apps
(generic-commit-raw pc))))
(define generic-reset-handler
(lambda (pc)
(let ((rkc (generic-context-rk-context pc)))
(rk-flush rkc))))
(define generic-focus-in-handler
(lambda (pc)
#f))
(define generic-focus-out-handler
(lambda (pc)
(generic-commit pc)
(generic-update-preedit pc)))
(define generic-place-handler generic-focus-in-handler)
(define generic-displace-handler generic-focus-out-handler)
(define generic-get-candidate-handler
(lambda (pc idx accel-enum-hint)
(let* ((cands (generic-context-cands pc))
(cell (nth idx cands))
(cand (if (pair? cell) (string-append (car cell) "\t" (cdr cell))
cell)))
(list cand (digit->string (+ idx 1)) ""))))
(define generic-set-candidate-index-handler
(lambda (pc idx)
(let ((rkc (generic-context-rk-context pc)))
(generic-context-set-rk-nth! pc idx)
(generic-update-preedit pc))))
(define generic-init-handler
(lambda (id im init-handler)
(init-handler id im #f)))
(define generic-register-im
(lambda (name lang code name-label short-desc init-arg)
(register-im
name
lang
code
name-label
short-desc
init-arg
generic-init-handler
#f ;; release-handler
context-mode-handler
generic-key-press-handler
generic-key-release-handler
generic-reset-handler
generic-get-candidate-handler
generic-set-candidate-index-handler
context-prop-activate-handler
#f
generic-focus-in-handler
generic-focus-out-handler
generic-place-handler
generic-displace-handler
)))
(generic-configure-widgets)
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