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;;; lazy-load.scm: Lazy IM loading support
;;;
;;; Copyright (c) 2005-2009 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")
(define stub-im-generate-init-handler
(lambda (name module-name)
(lambda (id fake-im fake-arg)
(let* ((stub-im (retrieve-im name))
(stub-im-init-handler (and stub-im
(im-init-handler stub-im))))
(and (require-module module-name)
(let* ((im (retrieve-im name))
(init-handler (im-init-handler im))
(arg (im-init-arg im))
(context (if (not (eq? init-handler
stub-im-init-handler))
(init-handler id im arg)
(begin
(error "stub IM actualization failed")
#f))))
context))))))
(define register-stub-im
(lambda (name lang encoding name-label short-desc module-name)
(if (or (not (retrieve-im name))
(not (im-key-press-handler (retrieve-im name))))
(let ((init-handler (stub-im-generate-init-handler name module-name)))
(register-im
name
lang
encoding
name-label
short-desc
#f ;; arg
init-handler
#f ;; release-handler
#f ;; mode-handler
#f ;; press-key-handler
#f ;; release-key-handler
#f ;; reset-handler
#f ;; get-candidate-handler
#f ;; set-candidate-index-handler
#f ;; prop-activate-handler
#f ;; input-string-handler
#f ;; focus-in-handler
#f ;; focus-out-handler
#f ;; place-handler
#f ;; displace-handler
)
(im-set-module-name! (retrieve-im name) module-name)))))
;; side effect: invoke require-module for all installed IM modules
(define stub-im-generate-stub-im-list
(lambda (im-names)
(let ((orig-enabled-im-list enabled-im-list))
(set! enabled-im-list ()) ;; enable all IMs
(for-each require-module installed-im-module-list)
(set! enabled-im-list orig-enabled-im-list))
(map (lambda (name)
(let ((im (retrieve-im name)))
(string-append
" (" (symbol->string name) "\n"
" \"" (im-lang im) "\"\n"
" \"" (im-encoding im) "\"\n"
" " (string-escape (im-name-label im)) "\n"
" " (string-escape (im-short-desc im)) "\n"
" \"" (im-module-name im) "\")\n"
)))
im-names)))
;; side effect: invoke require-module for all IM listed in
;; installed-im-module-list
(define stub-im-generate-all-stub-im-list
(lambda ()
(for-each require-module installed-im-module-list)
(stub-im-generate-stub-im-list (map im-name
(reverse im-list)))))
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