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;;; helm-elscreen.el -- Elscreen support

;; Copyright (C) 2012 Thierry Volpiatto <thierry.volpiatto@gmail.com>

;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.

;;; Code:
(eval-when-compile (require 'cl))
(require 'helm)

(declare-function elscreen-find-screen-by-buffer "ext:elscreen.el" (buffer &optional create))
(declare-function elscreen-find-file "ext:elscreen.el" (filename))
(declare-function elscreen-goto "ext:elscreen.el" (screen))

(defun helm-find-buffer-on-elscreen (candidate)
  "Open buffer in new screen, if marked buffers open all in elscreens."
  (helm-require-or-error 'elscreen 'helm-find-buffer-on-elscreen)
  (helm-aif (helm-marked-candidates)
      (dolist (i it)
        (let ((target-screen (elscreen-find-screen-by-buffer
                              (get-buffer i) 'create)))
          (elscreen-goto target-screen)))
    (let ((target-screen (elscreen-find-screen-by-buffer
                          (get-buffer candidate) 'create)))
      (elscreen-goto target-screen))))

(defun helm-elscreen-find-file (file)
  (helm-require-or-error 'elscreen 'helm-elscreen-find-file)
  (elscreen-find-file file))

(defvar helm-c-source-elscreen
  '((name . "Elscreen")
    (candidates
     . (lambda ()
         (if (cdr (elscreen-get-screen-to-name-alist))
             (sort
              (loop for sname in (elscreen-get-screen-to-name-alist)
                    append (list (format "[%d] %s" (car sname) (cdr sname))))
              #'(lambda (a b) (compare-strings a nil nil b nil nil))))))
    (action
     . (("Change Screen" .
                         (lambda (candidate)
                           (elscreen-goto (- (aref candidate 1) (aref "0" 0)))))
        ("Kill Screen(s)" .
                          (lambda (candidate)
                            (dolist (i (helm-marked-candidates))
                              (elscreen-goto (- (aref i 1) (aref "0" 0)))
                              (elscreen-kill))))
        ("Only Screen" .
                       (lambda (candidate)
                         (elscreen-goto (- (aref candidate 1) (aref "0" 0)))
                         (elscreen-kill-others)))))))

;;;###autoload
(defun helm-elscreen ()
  "Preconfigured helm to list elscreen."
  (interactive)
  (helm-other-buffer 'helm-c-source-elscreen "*Helm Elscreen*"))

(provide 'helm-elscreen)

;; Local Variables:
;; byte-compile-warnings: (not cl-functions obsolete)
;; coding: utf-8
;; indent-tabs-mode: nil
;; byte-compile-dynamic: t
;; End:

;;; helm-elscreen.el ends here
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