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|
;;; Mouse related functions and commands
;;; Copyright (C) 1995-1997 Kyle E. Jones
;;;
;;; 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 1, 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, write to the Free Software
;;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
(provide 'vm-mouse)
(defun vm-mouse-fsfemacs-mouse-p ()
(and vm-fsfemacs-p
(fboundp 'set-mouse-position)))
(defun vm-mouse-xemacs-mouse-p ()
(and vm-xemacs-p
(fboundp 'set-mouse-position)))
(defun vm-mouse-set-mouse-track-highlight (start end &optional overlay)
(if (null overlay)
(cond (vm-fsfemacs-p
(let ((o (make-overlay start end)))
(overlay-put o 'mouse-face 'highlight)
o ))
(vm-xemacs-p
(let ((o (make-extent start end)))
(set-extent-property o 'start-open t)
(set-extent-property o 'priority 10)
(set-extent-property o 'highlight t)
o )))
(cond (vm-fsfemacs-p
(move-overlay overlay start end))
(vm-xemacs-p
(set-extent-endpoints overlay start end)))))
(defun vm-mouse-button-2 (event)
(interactive "e")
;; go to where the event occurred
(cond ((vm-mouse-xemacs-mouse-p)
(set-buffer (window-buffer (event-window event)))
(and (event-point event) (goto-char (event-point event))))
((vm-mouse-fsfemacs-mouse-p)
(set-buffer (window-buffer (posn-window (event-start event))))
(goto-char (posn-point (event-start event)))))
;; now dispatch depending on where we are
(cond ((eq major-mode 'vm-summary-mode)
(mouse-set-point event)
(beginning-of-line)
(if (let ((vm-follow-summary-cursor t))
(vm-follow-summary-cursor))
nil
(setq this-command 'vm-scroll-forward)
(call-interactively 'vm-scroll-forward)))
((memq major-mode '(vm-mode vm-virtual-mode vm-presentation-mode))
(vm-mouse-popup-or-select event))))
(defun vm-mouse-button-3 (event)
(interactive "e")
(if vm-use-menus
(progn
;; go to where the event occurred
(cond ((vm-mouse-xemacs-mouse-p)
(set-buffer (window-buffer (event-window event)))
(and (event-point event) (goto-char (event-point event))))
((vm-mouse-fsfemacs-mouse-p)
(set-buffer (window-buffer (posn-window (event-start event))))
(goto-char (posn-point (event-start event)))))
;; now dispatch depending on where we are
(cond ((eq major-mode 'vm-summary-mode)
(vm-menu-popup-mode-menu event))
((eq major-mode 'vm-mode)
(vm-menu-popup-context-menu event))
((eq major-mode 'vm-presentation-mode)
(vm-menu-popup-context-menu event))
((eq major-mode 'vm-virtual-mode)
(vm-menu-popup-context-menu event))
((eq major-mode 'mail-mode)
(vm-menu-popup-context-menu event))))))
(defun vm-mouse-3-help (object)
nil
"Use mouse button 3 to see a menu of options.")
(defun vm-mouse-get-mouse-track-string (event)
(save-excursion
;; go to where the event occurred
(cond ((vm-mouse-xemacs-mouse-p)
(set-buffer (window-buffer (event-window event)))
(and (event-point event) (goto-char (event-point event))))
((vm-mouse-fsfemacs-mouse-p)
(set-buffer (window-buffer (posn-window (event-start event))))
(goto-char (posn-point (event-start event)))))
(cond (vm-fsfemacs-p
(let ((o-list (overlays-at (point)))
(string nil))
(while o-list
(if (overlay-get (car o-list) 'mouse-face)
(setq string (vm-buffer-substring-no-properties
(overlay-start (car o-list))
(overlay-end (car o-list)))
o-list nil)
(setq o-list (cdr o-list))))
string ))
(vm-xemacs-p
(let ((e (extent-at (point) nil 'highlight)))
(if e
(buffer-substring (extent-start-position e)
(extent-end-position e))
nil)))
(t nil))))
(defun vm-mouse-popup-or-select (event)
(interactive "e")
(cond ((vm-mouse-fsfemacs-mouse-p)
(set-buffer (window-buffer (posn-window (event-start event))))
(goto-char (posn-point (event-start event)))
(let (o-list (found nil))
(setq o-list (overlays-at (point)))
(while (and o-list (not found))
(cond ((overlay-get (car o-list) 'vm-url)
(setq found t)
(vm-mouse-send-url-at-event event))
((overlay-get (car o-list) 'vm-mime-function)
(setq found t)
(funcall (overlay-get (car o-list) 'vm-mime-function)
(car o-list))))
(setq o-list (cdr o-list)))
(and (not found) (vm-menu-popup-context-menu event))))
;; The XEmacs code is not actually used now, since all
;; selectable objects are handled by an extent keymap
;; binding that points to a more specific function. But
;; this might come in handy later if I want selectable
;; objects that don't have an extent or extent keymap
;; attached.
((vm-mouse-xemacs-mouse-p)
(set-buffer (window-buffer (event-window event)))
(and (event-point event) (goto-char (event-point event)))
(let (e)
(cond ((extent-at (point) (current-buffer) 'vm-url)
(vm-mouse-send-url-at-event event))
((setq e (extent-at (point) nil 'vm-mime-function))
(funcall (extent-property e 'vm-mime-function) e))
(t (vm-menu-popup-context-menu event)))))))
(defun vm-mouse-send-url-at-event (event)
(interactive "e")
(cond ((vm-mouse-xemacs-mouse-p)
(set-buffer (window-buffer (event-window event)))
(and (event-point event) (goto-char (event-point event)))
(vm-mouse-send-url-at-position (event-point event)))
((vm-mouse-fsfemacs-mouse-p)
(set-buffer (window-buffer (posn-window (event-start event))))
(goto-char (posn-point (event-start event)))
(vm-mouse-send-url-at-position (posn-point (event-start event))))))
(defun vm-mouse-send-url-at-position (pos &optional browser)
(save-restriction
(widen)
(cond ((vm-mouse-xemacs-mouse-p)
(let ((e (extent-at pos (current-buffer) 'vm-url))
url)
(if (null e)
nil
(setq url (buffer-substring (extent-start-position e)
(extent-end-position e)))
(vm-mouse-send-url url browser))))
((vm-mouse-fsfemacs-mouse-p)
(let (o-list url o)
(setq o-list (overlays-at pos))
(while (and o-list (null (overlay-get (car o-list) 'vm-url)))
(setq o-list (cdr o-list)))
(if (null o-list)
nil
(setq o (car o-list))
(setq url (vm-buffer-substring-no-properties
(overlay-start o)
(overlay-end o)))
(vm-mouse-send-url url browser)))))))
(defun vm-mouse-send-url (url &optional browser)
(if (string-match "^mailto:" url)
(vm-mail-to-mailto-url url)
(let ((browser (or browser vm-url-browser)))
(cond ((symbolp browser)
(funcall browser url))
((stringp browser)
(message "Sending URL to %s..." browser)
(vm-run-background-command browser url)
(message "Sending URL to %s... done" browser))))))
(defun vm-mouse-send-url-to-netscape (url &optional new-netscape new-window)
(message "Sending URL to Netscape...")
(if new-netscape
(apply 'vm-run-background-command vm-netscape-program
(append vm-netscape-program-switches (list url)))
(or (equal 0 (apply 'vm-run-command vm-netscape-program "-remote"
(append (list (concat "openURL(" url
(if new-window ", new-window" "")
")"))
vm-netscape-program-switches)))
(vm-mouse-send-url-to-netscape url t new-window)))
(message "Sending URL to Netscape... done"))
(defun vm-mouse-send-url-to-netscape-new-window (url)
(vm-mouse-send-url-to-netscape url nil t))
(defun vm-mouse-send-url-to-mosaic (url &optional new-mosaic new-window)
(message "Sending URL to Mosaic...")
(if (null new-mosaic)
(let ((pid-file "~/.mosaicpid")
(work-buffer " *mosaic work*")
(coding-system-for-read 'no-conversion)
(coding-system-for-write 'no-conversion)
pid)
(cond ((file-exists-p pid-file)
(set-buffer (get-buffer-create work-buffer))
(erase-buffer)
(insert-file-contents pid-file)
(setq pid (int-to-string (string-to-int (buffer-string))))
(erase-buffer)
(insert (if new-window "newwin" "goto") ?\n)
(insert url ?\n)
;; newline convention used should be the local
;; one, whatever that is.
(setq buffer-file-type nil)
(and vm-xemacs-mule-p
(set-buffer-file-coding-system 'no-conversion nil))
(write-region (point-min) (point-max)
(concat "/tmp/Mosaic." pid)
nil 0)
(set-buffer-modified-p nil)
(kill-buffer work-buffer)))
(cond ((or (null pid)
(not (equal 0 (vm-run-command "kill" "-USR1" pid))))
(setq new-mosaic t)))))
(if new-mosaic
(apply 'vm-run-background-command vm-mosaic-program
(append vm-mosaic-program-switches (list url))))
(message "Sending URL to Mosaic... done"))
(defun vm-mouse-send-url-to-mosaic-new-window (url)
(vm-mouse-send-url-to-mosaic url nil t))
(defun vm-mouse-install-mouse ()
(cond ((vm-mouse-xemacs-mouse-p)
(if (null (lookup-key vm-mode-map 'button2))
(define-key vm-mode-map 'button2 'vm-mouse-button-2)))
((vm-mouse-fsfemacs-mouse-p)
(if (null (lookup-key vm-mode-map [mouse-2]))
(define-key vm-mode-map [mouse-2] 'vm-mouse-button-2))
(if vm-popup-menu-on-mouse-3
(progn
(define-key vm-mode-map [mouse-3] 'ignore)
(define-key vm-mode-map [down-mouse-3] 'vm-mouse-button-3))))))
(defun vm-run-background-command (command &rest arg-list)
(apply (function call-process) command nil 0 nil arg-list))
(defun vm-run-command (command &rest arg-list)
(apply (function call-process) command nil nil nil arg-list))
;; return t on zero exit status
;; return (exit-status . stderr-string) on nonzero exit status
(defun vm-run-command-on-region (start end output-buffer command
&rest arg-list)
(let ((tempfile nil)
;; for DOS/Windows command to tell it that its input is
;; binary.
(binary-process-input t)
status errstring)
(unwind-protect
(progn
(setq tempfile (vm-make-tempfile-name))
(setq status
(apply 'call-process-region
start end command nil
(list output-buffer tempfile)
nil arg-list))
(cond ((equal status 0) t)
;; even if exit status non-zero, if there was no
;; diagnostic output the command probably
;; succeeded. I have tried to just use exit status
;; as the failure criterion and users complained.
((equal (nth 7 (file-attributes tempfile)) 0)
(message "%s exited non-zero (code %s)" command status)
t)
(t (save-excursion
(message "%s exited non-zero (code %s)" command status)
(set-buffer (find-file-noselect tempfile))
(setq errstring (buffer-string))
(kill-buffer nil)
(cons status errstring)))))
(vm-error-free-call 'delete-file tempfile))))
;; stupid yammering compiler
(defvar vm-mouse-read-file-name-prompt)
(defvar vm-mouse-read-file-name-dir)
(defvar vm-mouse-read-file-name-default)
(defvar vm-mouse-read-file-name-must-match)
(defvar vm-mouse-read-file-name-initial)
(defvar vm-mouse-read-file-name-history)
(defvar vm-mouse-read-file-name-return-value)
(defvar vm-mouse-read-file-name-should-delete-frame)
(defun vm-mouse-read-file-name (prompt &optional dir default
must-match initial history)
"Like read-file-name, except uses a mouse driven interface.
HISTORY argument is ignored."
(save-excursion
(or dir (setq dir default-directory))
(set-buffer (generate-new-buffer " *Files*"))
(use-local-map (make-sparse-keymap))
(setq buffer-read-only t
default-directory dir)
(make-local-variable 'vm-mouse-read-file-name-prompt)
(make-local-variable 'vm-mouse-read-file-name-dir)
(make-local-variable 'vm-mouse-read-file-name-default)
(make-local-variable 'vm-mouse-read-file-name-must-match)
(make-local-variable 'vm-mouse-read-file-name-initial)
(make-local-variable 'vm-mouse-read-file-name-history)
(make-local-variable 'vm-mouse-read-file-name-return-value)
(make-local-variable 'vm-mouse-read-file-name-should-delete-frame)
(setq vm-mouse-read-file-name-prompt prompt)
(setq vm-mouse-read-file-name-dir dir)
(setq vm-mouse-read-file-name-default default)
(setq vm-mouse-read-file-name-must-match must-match)
(setq vm-mouse-read-file-name-initial initial)
(setq vm-mouse-read-file-name-history history)
(setq vm-mouse-read-file-name-prompt prompt)
(setq vm-mouse-read-file-name-return-value nil)
(setq vm-mouse-read-file-name-should-delete-frame nil)
(if (and vm-mutable-frames vm-frame-per-completion
(vm-multiple-frames-possible-p))
(save-excursion
(setq vm-mouse-read-file-name-should-delete-frame t)
(vm-goto-new-frame 'completion)))
(switch-to-buffer (current-buffer))
(vm-mouse-read-file-name-event-handler)
(save-excursion
(local-set-key "\C-g" 'vm-mouse-read-file-name-quit-handler)
(recursive-edit))
;; buffer could have been killed
(and (boundp 'vm-mouse-read-file-name-return-value)
(prog1
vm-mouse-read-file-name-return-value
(kill-buffer (current-buffer))))))
(defun vm-mouse-read-file-name-event-handler (&optional string)
(let ((key-doc "Click here for keyboard interface.")
start list)
(if string
(cond ((equal string key-doc)
(condition-case nil
(save-excursion
(setq vm-mouse-read-file-name-return-value
(save-excursion
(vm-keyboard-read-file-name
vm-mouse-read-file-name-prompt
vm-mouse-read-file-name-dir
vm-mouse-read-file-name-default
vm-mouse-read-file-name-must-match
vm-mouse-read-file-name-initial
vm-mouse-read-file-name-history)))
(vm-mouse-read-file-name-quit-handler t))
(quit (vm-mouse-read-file-name-quit-handler))))
((file-directory-p string)
(setq default-directory (expand-file-name string)))
(t (setq vm-mouse-read-file-name-return-value
(expand-file-name string))
(vm-mouse-read-file-name-quit-handler t))))
(setq buffer-read-only nil)
(erase-buffer)
(setq start (point))
(insert vm-mouse-read-file-name-prompt)
(vm-set-region-face start (point) 'bold)
(cond ((and (not string) vm-mouse-read-file-name-default)
(setq start (point))
(insert vm-mouse-read-file-name-default)
(vm-mouse-set-mouse-track-highlight start (point)))
((not string) nil)
(t (insert default-directory)))
(insert ?\n ?\n)
(setq start (point))
(insert key-doc)
(vm-mouse-set-mouse-track-highlight start (point))
(vm-set-region-face start (point) 'italic)
(insert ?\n ?\n)
(setq list (vm-delete-backup-file-names
(vm-delete-auto-save-file-names
(vm-delete-index-file-names
(directory-files default-directory)))))
(vm-show-list list 'vm-mouse-read-file-name-event-handler)
(setq buffer-read-only t)))
(defun vm-mouse-read-file-name-quit-handler (&optional normal-exit)
(interactive)
(if vm-mouse-read-file-name-should-delete-frame
(vm-maybe-delete-windows-or-frames-on (current-buffer)))
(if normal-exit
(throw 'exit nil)
(throw 'exit t)))
(defvar vm-mouse-read-string-prompt)
(defvar vm-mouse-read-string-completion-list)
(defvar vm-mouse-read-string-multi-word)
(defvar vm-mouse-read-string-return-value)
(defvar vm-mouse-read-string-should-delete-frame)
(defun vm-mouse-read-string (prompt completion-list &optional multi-word)
(save-excursion
(set-buffer (generate-new-buffer " *Choices*"))
(use-local-map (make-sparse-keymap))
(setq buffer-read-only t)
(make-local-variable 'vm-mouse-read-string-prompt)
(make-local-variable 'vm-mouse-read-string-completion-list)
(make-local-variable 'vm-mouse-read-string-multi-word)
(make-local-variable 'vm-mouse-read-string-return-value)
(make-local-variable 'vm-mouse-read-string-should-delete-frame)
(setq vm-mouse-read-string-prompt prompt)
(setq vm-mouse-read-string-completion-list completion-list)
(setq vm-mouse-read-string-multi-word multi-word)
(setq vm-mouse-read-string-return-value nil)
(setq vm-mouse-read-string-should-delete-frame nil)
(if (and vm-mutable-frames vm-frame-per-completion
(vm-multiple-frames-possible-p))
(save-excursion
(setq vm-mouse-read-string-should-delete-frame t)
(vm-goto-new-frame 'completion)))
(switch-to-buffer (current-buffer))
(vm-mouse-read-string-event-handler)
(save-excursion
(local-set-key "\C-g" 'vm-mouse-read-string-quit-handler)
(recursive-edit))
;; buffer could have been killed
(and (boundp 'vm-mouse-read-string-return-value)
(prog1
(if (listp vm-mouse-read-string-return-value)
(mapconcat 'identity vm-mouse-read-string-return-value " ")
vm-mouse-read-string-return-value)
(kill-buffer (current-buffer))))))
(defun vm-mouse-read-string-event-handler (&optional string)
(let ((key-doc "Click here for keyboard interface.")
(bs-doc " .... to go back one word.")
(done-doc " .... when you're done.")
start list)
(if string
(cond ((equal string key-doc)
(condition-case nil
(save-excursion
(setq vm-mouse-read-string-return-value
(vm-keyboard-read-string
vm-mouse-read-string-prompt
vm-mouse-read-string-completion-list
vm-mouse-read-string-multi-word))
(vm-mouse-read-string-quit-handler t))
(quit (vm-mouse-read-string-quit-handler))))
((equal string bs-doc)
(setq vm-mouse-read-string-return-value
(nreverse
(cdr
(nreverse vm-mouse-read-string-return-value)))))
((equal string done-doc)
(vm-mouse-read-string-quit-handler t))
(t (setq vm-mouse-read-string-return-value
(nconc vm-mouse-read-string-return-value
(list string)))
(if (null vm-mouse-read-string-multi-word)
(vm-mouse-read-string-quit-handler t)))))
(setq buffer-read-only nil)
(erase-buffer)
(setq start (point))
(insert vm-mouse-read-string-prompt)
(vm-set-region-face start (point) 'bold)
(insert (mapconcat 'identity vm-mouse-read-string-return-value " "))
(insert ?\n ?\n)
(setq start (point))
(insert key-doc)
(vm-mouse-set-mouse-track-highlight start (point))
(vm-set-region-face start (point) 'italic)
(insert ?\n)
(if vm-mouse-read-string-multi-word
(progn
(setq start (point))
(insert bs-doc)
(vm-mouse-set-mouse-track-highlight start (point))
(vm-set-region-face start (point) 'italic)
(insert ?\n)
(setq start (point))
(insert done-doc)
(vm-mouse-set-mouse-track-highlight start (point))
(vm-set-region-face start (point) 'italic)
(insert ?\n)))
(insert ?\n)
(vm-show-list vm-mouse-read-string-completion-list
'vm-mouse-read-string-event-handler)
(setq buffer-read-only t)))
(defun vm-mouse-read-string-quit-handler (&optional normal-exit)
(interactive)
(if vm-mouse-read-string-should-delete-frame
(vm-maybe-delete-windows-or-frames-on (current-buffer)))
(if normal-exit
(throw 'exit nil)
(throw 'exit t)))
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