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;;;
;;; Copyright (c) 2003-2012 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-custom "generic-key-custom.scm")
(require-custom "m17nlib-custom.scm")

;;; user configs

(define m17nlib-candidate-max 10)

;; key defs
(define-key m17nlib-on-key? 'generic-on-key?)
(define-key m17nlib-off-key? 'generic-off-key?)

;;; implementations

(register-action 'action_m17nlib_off
(lambda (mc)
(list
'off
"-"
(N_ "off")
(N_ "Direct Input Mode")))
(lambda (mc)
(not (m17nlib-context-on mc)))
(lambda (mc)
(m17nlib-context-set-on! mc #f)))

(register-action 'action_m17nlib_on
(lambda (mc)
(let* ((im (m17nlib-context-im mc))
(name (symbol->string (im-name im))))
(list
'on
"O"
(N_ "on")
(string-append name (N_ " Mode")))))
(lambda (mc)
(m17nlib-context-on mc))
(lambda (mc)
(m17nlib-context-set-on! mc #t)))

;; Update widget definitions based on action configurations. The
;; procedure is needed for on-the-fly reconfiguration involving the
;; custom API
(define m17nlib-configure-widgets
  (lambda ()
    (register-widget 'widget_m17nlib_input_mode
(activity-indicator-new m17nlib-input-mode-actions)
(actions-new m17nlib-input-mode-actions))))

(define m17nlib-context-rec-spec
  (append
   context-rec-spec
   ;; renamed from 'id' to avoid conflict with context-id
   '((mc-id #f)
     (on #f)
     (showing-candidate #f))))

(define-record 'm17nlib-context m17nlib-context-rec-spec)
(define m17nlib-context-new-internal m17nlib-context-new)

(define m17nlib-context-new
  (lambda (id im name)
    (let ((mc (m17nlib-context-new-internal id im))
(mc-id (m17nlib-lib-alloc-context name)))
      (m17nlib-context-set-widgets! mc m17nlib-widgets)
      (m17nlib-context-set-mc-id! mc mc-id)
      mc)))

(define m17nlib-update-preedit
  (lambda (mc)
    (let* ((mid (m17nlib-context-mc-id mc)))
      (if (m17nlib-lib-preedit-changed? mid)
(if (m17nlib-lib-compose-mode? mid)
(begin
(im-clear-preedit mc)
(im-pushback-preedit mc
preedit-underline
(m17nlib-lib-get-left-of-candidate mid))
(im-pushback-preedit mc
(+ preedit-reverse preedit-cursor)
(m17nlib-lib-get-selected-candidate mid))
(im-pushback-preedit mc
preedit-underline
(m17nlib-lib-get-right-of-candidate mid))
(im-update-preedit mc))
(begin
(im-clear-preedit mc)
(im-pushback-preedit mc
preedit-underline
(m17nlib-lib-get-left-of-cursor mid))
(im-pushback-preedit mc
preedit-cursor "")
(im-pushback-preedit mc
preedit-underline
(m17nlib-lib-get-right-of-cursor mid))
(im-update-preedit mc))
)))))

(define m17nlib-update-candidate
  (lambda (mc)
    (m17nlib-lib-fill-new-candidates! (m17nlib-context-mc-id mc))
    (let* ((mid (m17nlib-context-mc-id mc))
(nrcands (m17nlib-lib-get-nr-candidates mid))
(showing-candidate? (m17nlib-context-showing-candidate mc))
(candidates-changed? (m17nlib-lib-candidates-changed? mid)))
      ;; FIXME: Rewrite this seriese of if with cond.
      (if (or
(and showing-candidate? candidates-changed?)
(and showing-candidate? (not (m17nlib-lib-candidate-show? mid)))
(= nrcands 0))
(begin
(im-deactivate-candidate-selector mc)
(m17nlib-context-set-showing-candidate! mc #f)))

      (if (and
(or
candidates-changed?
(and
(not showing-candidate?)
(m17nlib-lib-candidate-show? mid)))
(not (= nrcands 0)))
(begin
(im-activate-candidate-selector
mc nrcands m17nlib-candidate-max)
(im-select-candidate
mc (m17nlib-lib-get-candidate-index mid))
(m17nlib-context-set-showing-candidate! mc #t)))

      (if (and (m17nlib-context-showing-candidate mc)
(m17nlib-lib-candidate-show? mid))
(im-select-candidate mc (m17nlib-lib-get-candidate-index mid))))))


(define m17nlib-construct-modifier
  (lambda (key key-state)
    (let ((key-str ""))
      (if (and
(shift-key-mask key-state)
(not (ichar-graphic? key)))
(set! key-str (string-append "S-" key-str)))
      (if (and
(control-key-mask key-state)
(ichar-printable? key))
(set! key-str (string-append "C-" key-str)))
      (if (alt-key-mask key-state)
(set! key-str (string-append "A-" key-str)))
      (if (meta-key-mask key-state)
(set! key-str (string-append "M-" key-str)))
      (if (super-key-mask key-state)
(set! key-str (string-append "s-" key-str)))
      (if (hyper-key-mask key-state)
(set! key-str (string-append "H-" key-str)))
      key-str)))

(define m17nlib-construct-key
  (lambda (key key-state)
    (if (symbol? key)
(let ((mkey (assq key m17nlib-key-translation-alist)))
(if mkey
(cdr mkey)
""))
(if (control-key-mask key-state)
(charcode->string (ichar-upcase key))
(charcode->string key)))))

(define m17nlib-proc-direct-state
  (lambda (mc key key-state)
   (if (m17nlib-on-key? key key-state)
       (m17nlib-context-set-on! mc #t)
       (m17nlib-commit-raw mc))))

(define m17nlib-commit-raw
  (lambda (mc)
    (im-commit-raw mc)))

(define m17nlib-key-translation-alist
  '((backspace . "BackSpace")
    (delete . "Delete")
    (escape . "Escape")
    (return . "Return")
    (tab . "Tab")
    (left . "Left")
    (up . "Up")
    (right . "Right")
    (down . "Down")
    (prior . "Page_Down")
    (next . "Page_Up")
    (home . "Home")
    (end . "End")
    (zenkaku-hankaku . "")
    (Multi_key . "")
    (Mode_switch . "")
    (Henkan_Mode . "")
    (Muhenkan . "")
    (Kanji . "")
    (hiragana-katakana . "")
    (F1 . "F1")
    (F2 . "F2")
    (F3 . "F3")
    (F4 . "F4")
    (F5 . "F5")
    (F6 . "F6")
    (F7 . "F7")
    (F8 . "F8")
    (F9 . "F9")
    (F10 . "F10")
    (F11 . "F11")
    (F12 . "F12")
    (F13 . "F13")
    (F14 . "F14")
    (F15 . "F15")
    (F16 . "F16")
    (F17 . "F17")
    (F18 . "F18")
    (F19 . "F19")
    (F20 . "F20")))
  
; Unfortunatelly, we don't have simple way to translate...
(define m17nlib-translate-ukey-to-mkey
  (lambda (key key-state)
    (string-append
     (m17nlib-construct-modifier key key-state)
     (m17nlib-construct-key key key-state))))

(define m17nlib-init-handler
  (lambda (id im arg)
    (m17nlib-context-new id im arg)))

(define m17nlib-release-handler
  (lambda (mc)
    #f))

(define m17nlib-push-key
  (lambda (mc key key-state)
    (let ((mid (m17nlib-context-mc-id mc))
(mkey (m17nlib-translate-ukey-to-mkey key key-state)))
      (m17nlib-lib-push-symbol-key mid mkey))))

(define m17nlib-press-key-handler
  (lambda (mc key key-state)
    (let* ((mid (m17nlib-context-mc-id mc)))
      (if (m17nlib-context-on mc)
(if (m17nlib-push-key mc key key-state)
#f ; Key event is consumed in m17n-push-key
(let* ((result (m17nlib-lib-get-result mid))
(consumed? (car result))
(commit-str (cdr result)))
(if (m17nlib-off-key? key key-state)
(begin
(m17nlib-context-set-on! mc #f)
(if (not (string=? commit-str ""))
(im-commit mc commit-str)))
(if (string=? commit-str "")
(im-commit-raw mc)
(begin
(im-commit mc commit-str)
(m17nlib-lib-commit mid)
(if (not consumed?)
(im-commit-raw mc)))))))
(m17nlib-proc-direct-state mc key key-state))
      (m17nlib-update-preedit mc)
      (m17nlib-update-candidate mc))))

(define m17nlib-release-key-handler
  (lambda (mc key key-state)
    (if (or (ichar-control? key)
            (not (m17nlib-context-on mc)))
      ;; don't discard key release event for apps
      (m17nlib-commit-raw mc))))

(define m17nlib-reset-handler
  (lambda (mc)
    (let ((mid (m17nlib-context-mc-id mc)))
      (m17nlib-lib-push-symbol-key mid "input-reset"))))

(define m17nlib-focus-in-handler
  (lambda (mc)
    (let ((mid (m17nlib-context-mc-id mc)))
      (m17nlib-lib-push-symbol-key mid "input-focus-in")
      (m17nlib-update-preedit mc))))

(define m17nlib-focus-out-handler
  (lambda (mc)
    (let ((mid (m17nlib-context-mc-id mc)))
      (m17nlib-lib-push-symbol-key mid "input-focus-out")
      (m17nlib-update-preedit mc))))

(define m17nlib-displace-handler
  (lambda (mc)
    (let ((mid (m17nlib-context-mc-id mc)))
      (m17nlib-lib-push-symbol-key mid "input-focus-move")
      (m17nlib-update-preedit mc))))

(define m17nlib-get-candidate-handler
  (lambda (mc idx accel-enum-hint)
    (let* ((mid (m17nlib-context-mc-id mc))
(cand (m17nlib-lib-get-nth-candidate
mid idx)))
      (list cand (digit->string (+ idx 1)) ""))))

(define m17nlib-set-candidate-index-handler
  (lambda (mc idx)
    #f))

;; Developer specified IM rejection should be completely withdrawn
;; after we got flexible install-time IM preference list. These
;; redundant IMs should be "disabled by default, but can be enabled"
;; under the feature. But we should invest our time for more valuable
;; issues. -- YamaKen 2005-01-25
(define duplicated-im-list
  '("m17n-ja-anthy"
    "m17n-ja-tcode"
    "m17n-zh-pinyin"
    "m17n-zh-py"))

;; At now, simply enable all IMs. Although they are redundant and
;; unconfortable, they can be disabled by uim-pref.
;; -- YamaKen 2005-01-25
(define duplicated-im?
  (if #t
      (lambda (name)
#f)
      (lambda (name)
(member name duplicated-im-list))))

(define m17nlib-register
  (lambda (i nr-im)
    (if (> nr-im i)
(begin
(if (not (duplicated-im? (m17nlib-lib-nth-input-method-name i)))
(register-im
(string->symbol (m17nlib-lib-nth-input-method-name i))
(m17nlib-lib-nth-input-method-lang i)
"UTF-8"
(m17nlib-lib-nth-input-method-name i)
(m17nlib-lib-nth-input-method-short-desc i)
(m17nlib-lib-nth-input-method-name i)
m17nlib-init-handler
m17nlib-release-handler
context-mode-handler
m17nlib-press-key-handler
m17nlib-release-key-handler
m17nlib-reset-handler
m17nlib-get-candidate-handler
m17nlib-set-candidate-index-handler
context-prop-activate-handler
#f
m17nlib-focus-in-handler
m17nlib-focus-out-handler
#f
m17nlib-displace-handler
))
(m17nlib-register (+ i 1) nr-im))
())))

(m17nlib-lib-init)
(m17nlib-register 0 (m17nlib-lib-nr-input-methods))
(m17nlib-configure-widgets)
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