(put 'track-mouse 'lisp-indent-function 0)
(defcustom mouse-yank-at-point nil
"*If non-nil, mouse yank commands yank at point instead of at click."
:type 'boolean
:group 'mouse)
(defcustom mouse-drag-copy-region t
"*If non-nil, mouse drag copies region to kill-ring."
:type 'boolean
:version "22.1"
:group 'mouse)
(defcustom mouse-1-click-follows-link 450
"Non-nil means that clicking Mouse-1 on a link follows the link.
With the default setting, an ordinary Mouse-1 click on a link
performs the same action as Mouse-2 on that link, while a longer
Mouse-1 click \(hold down the Mouse-1 button for more than 450
milliseconds) performs the original Mouse-1 binding \(which
typically sets point where you click the mouse).
If value is an integer, the time elapsed between pressing and
releasing the mouse button determines whether to follow the link
or perform the normal Mouse-1 action (typically set point).
The absolute numeric value specifices the maximum duration of a
\"short click\" in milliseconds. A positive value means that a
short click follows the link, and a longer click performs the
normal action. A negative value gives the opposite behavior.
If value is `double', a double click follows the link.
Otherwise, a single Mouse-1 click unconditionally follows the link.
Note that dragging the mouse never follows the link.
This feature only works in modes that specifically identify
clickable text as links, so it may not work with some external
packages. See `mouse-on-link-p' for details."
:version "22.1"
:type '(choice (const :tag "Disabled" nil)
(const :tag "Double click" double)
(number :tag "Single click time limit" :value 450)
(other :tag "Single click" t))
:group 'mouse)
(defcustom mouse-1-click-in-non-selected-windows t
"*If non-nil, a Mouse-1 click also follows links in non-selected windows.
If nil, a Mouse-1 click on a link in a non-selected window performs
the normal mouse-1 binding, typically selects the window and sets
point at the click position."
:type 'boolean
:version "22.1"
:group 'mouse)
(defun popup-menu (menu &optional position prefix)
"Popup the given menu and call the selected option.
MENU can be a keymap, an easymenu-style menu or a list of keymaps as for
`x-popup-menu'.
POSITION can be a click event or ((XOFFSET YOFFSET) WINDOW) and defaults to
the current mouse position.
PREFIX is the prefix argument (if any) to pass to the command."
(let* ((map (cond
((keymapp menu) menu)
((and (listp menu) (keymapp (car menu))) menu)
(t (let* ((map (easy-menu-create-menu (car menu) (cdr menu)))
(filter (when (symbolp map)
(plist-get (get map 'menu-prop) :filter))))
(if filter (funcall filter (symbol-function map)) map)))))
event cmd)
(unless position
(let ((mp (mouse-pixel-position)))
(setq position (list (list (cadr mp) (cddr mp)) (car mp)))))
(while (and map (setq event
(x-popup-menu position (indirect-function map))))
(setq cmd
(if (and (not (keymapp map)) (listp map))
(let ((mouse-click (apply 'vector event))
binding)
(while (and map (null binding))
(setq binding (lookup-key (car map) mouse-click))
(if (numberp binding) (setq binding nil))
(setq map (cdr map)))
binding)
(lookup-key map (apply 'vector event))))
(message "")
(setq map (if (keymapp cmd) cmd)))
(when (and (null map) (commandp cmd))
(setq prefix-arg prefix)
(setq last-command-event (car (last event)))
(call-interactively cmd))))
(defvar mouse-major-mode-menu-prefix)
(defun mouse-major-mode-menu (event &optional prefix)
"Pop up a mode-specific menu of mouse commands.
Default to the Edit menu if the major mode doesn't define a menu."
(interactive "@e\nP")
(run-hooks 'activate-menubar-hook 'menu-bar-update-hook)
(let* ( (mouse-major-mode-menu-prefix nil)
(ancestor (mouse-major-mode-menu-1
(and (current-local-map)
(local-key-binding [menu-bar]))))
(newmap (if ancestor
(make-sparse-keymap (concat mode-name " Mode"))
menu-bar-edit-menu)))
(if ancestor
(set-keymap-parent newmap ancestor))
(popup-menu newmap event prefix)))
(defun mouse-major-mode-menu-1 (menubar)
(if menubar
(let ((tail menubar)
submap)
(while tail
(if (consp (car tail))
(if submap
(setq submap t)
(setq submap (car tail))))
(setq tail (cdr tail)))
(if (eq submap t)
menubar
(setq mouse-major-mode-menu-prefix (list (car submap)))
(lookup-key menubar (vector (car submap)))))))
(defun mouse-popup-menubar (event prefix)
"Pop up a menu equivalent to the menu bar for keyboard EVENT with PREFIX.
The contents are the items that would be in the menu bar whether or
not it is actually displayed."
(interactive "@e \nP")
(run-hooks 'activate-menubar-hook 'menu-bar-update-hook)
(let* ((local-menu (and (current-local-map)
(lookup-key (current-local-map) [menu-bar])))
(global-menu (lookup-key global-map [menu-bar]))
(minor-mode-menus
(mapcar
(function
(lambda (menu)
(let* ((minor-mode (car menu))
(menu (cdr menu))
(title-or-map (cadr menu)))
(or (stringp title-or-map)
(setq menu
(cons 'keymap
(cons (concat
(capitalize (subst-char-in-string
?- ?\s (symbol-name
minor-mode)))
" Menu")
(cdr menu)))))
menu)))
(minor-mode-key-binding [menu-bar])))
(local-title-or-map (and local-menu (cadr local-menu)))
(global-title-or-map (cadr global-menu)))
(or (null local-menu)
(stringp local-title-or-map)
(setq local-menu (cons 'keymap
(cons (concat mode-name " Mode Menu")
(cdr local-menu)))))
(or (stringp global-title-or-map)
(setq global-menu (cons 'keymap
(cons "Global Menu"
(cdr global-menu)))))
(popup-menu (append (list global-menu)
(if local-menu
(list local-menu))
minor-mode-menus)
event prefix)))
(defun mouse-popup-menubar-stuff (event prefix)
"Popup a menu like either `mouse-major-mode-menu' or `mouse-popup-menubar'.
Use the former if the menu bar is showing, otherwise the latter."
(interactive "@e \nP")
(if (zerop (assoc-default 'menu-bar-lines (frame-parameters) 'eq 0))
(mouse-popup-menubar event prefix)
(mouse-major-mode-menu event prefix)))
(defun mouse-minibuffer-check (event)
(let ((w (posn-window (event-start event))))
(and (window-minibuffer-p w)
(not (minibuffer-window-active-p w))
(error "Minibuffer window is not active")))
(run-hooks 'mouse-leave-buffer-hook))
(defun mouse-delete-window (click)
"Delete the window you click on.
Do nothing if the frame has just one window.
This command must be bound to a mouse click."
(interactive "e")
(unless (one-window-p t)
(mouse-minibuffer-check click)
(delete-window (posn-window (event-start click)))))
(defun mouse-select-window (click)
"Select the window clicked on; don't move point."
(interactive "e")
(mouse-minibuffer-check click)
(let ((oframe (selected-frame))
(frame (window-frame (posn-window (event-start click)))))
(select-window (posn-window (event-start click)))
(raise-frame frame)
(select-frame frame)
(or (eq frame oframe)
(set-mouse-position (selected-frame) (1- (frame-width)) 0))))
(defun mouse-tear-off-window (click)
"Delete the window clicked on, and create a new frame displaying its buffer."
(interactive "e")
(mouse-minibuffer-check click)
(let* ((window (posn-window (event-start click)))
(buf (window-buffer window))
(frame (make-frame)))
(select-frame frame)
(switch-to-buffer buf)
(delete-window window)))
(defun mouse-delete-other-windows ()
"Delete all windows except the one you click on."
(interactive "@")
(delete-other-windows))
(defun mouse-split-window-vertically (click)
"Select Emacs window mouse is on, then split it vertically in half.
The window is split at the line clicked on.
This command must be bound to a mouse click."
(interactive "@e")
(mouse-minibuffer-check click)
(let ((start (event-start click)))
(select-window (posn-window start))
(let ((new-height (1+ (cdr (posn-col-row (event-end click)))))
(first-line window-min-height)
(last-line (- (window-height) window-min-height)))
(if (< last-line first-line)
(error "Window too short to split")
(split-window-vertically
(min (max new-height first-line) last-line))))))
(defun mouse-split-window-horizontally (click)
"Select Emacs window mouse is on, then split it horizontally in half.
The window is split at the column clicked on.
This command must be bound to a mouse click."
(interactive "@e")
(mouse-minibuffer-check click)
(let ((start (event-start click)))
(select-window (posn-window start))
(let ((new-width (1+ (car (posn-col-row (event-end click)))))
(first-col window-min-width)
(last-col (- (window-width) window-min-width)))
(if (< last-col first-col)
(error "Window too narrow to split")
(split-window-horizontally
(min (max new-width first-col) last-col))))))
(defun mouse-drag-window-above (window)
"Return the (or a) window directly above WINDOW.
That means one whose bottom edge is at the same height as WINDOW's top edge."
(let ((start-top (nth 1 (window-edges window)))
(start-left (nth 0 (window-edges window)))
(start-right (nth 2 (window-edges window)))
(start-window window)
above-window)
(setq window (previous-window window 0))
(while (and (not above-window) (not (eq window start-window)))
(let ((left (nth 0 (window-edges window)))
(right (nth 2 (window-edges window))))
(when (and (= (+ (window-height window) (nth 1 (window-edges window)))
start-top)
(or (and (<= left start-left) (<= start-right right))
(and (<= start-left left) (<= left start-right))
(and (<= start-left right) (<= right start-right))))
(setq above-window window)))
(setq window (previous-window window)))
above-window))
(defun mouse-drag-move-window-bottom (window growth)
"Move the bottom of WINDOW up or down by GROWTH lines.
Move it down if GROWTH is positive, or up if GROWTH is negative.
If this would make WINDOW too short,
shrink the window or windows above it to make room."
(condition-case nil
(adjust-window-trailing-edge window growth nil)
(error nil)))
(defsubst mouse-drag-move-window-top (window growth)
"Move the top of WINDOW up or down by GROWTH lines.
Move it down if GROWTH is positive, or up if GROWTH is negative.
If this would make WINDOW too short, shrink the window or windows
above it to make room."
(let ((window-above (mouse-drag-window-above window)))
(and window-above
(mouse-drag-move-window-bottom window-above (- growth)))))
(defun mouse-drag-mode-line-1 (start-event mode-line-p)
"Change the height of a window by dragging on the mode or header line.
START-EVENT is the starting mouse-event of the drag action.
MODE-LINE-P non-nil means dragging a mode line; nil means a header line."
(run-hooks 'mouse-leave-buffer-hook)
(let* ((done nil)
(echo-keystrokes 0)
(start (event-start start-event))
(start-event-window (posn-window start))
(start-event-frame (window-frame start-event-window))
(start-nwindows (count-windows t))
(minibuffer (frame-parameter nil 'minibuffer))
should-enlarge-minibuffer event mouse y top bot edges wconfig growth)
(track-mouse
(progn
(setq should-enlarge-minibuffer
(and minibuffer
mode-line-p
(not (one-window-p t))
(= (nth 1 (window-edges minibuffer))
(nth 3 (window-edges start-event-window)))))
(while (not done)
(setq event (read-event)
mouse (mouse-position))
(cond ((integerp event)
(setq done t))
((memq (car event) '(switch-frame select-window))
nil)
((not (memq (car event) '(mouse-movement scroll-bar-movement)))
(when (consp event)
(push event unread-command-events))
(setq done t))
((not (eq (car mouse) start-event-frame))
nil)
((null (car (cdr mouse)))
nil)
(t
(setq y (cdr (cdr mouse))
edges (window-edges start-event-window)
top (nth 1 edges)
bot (nth 3 edges))
(cond (mode-line-p
(setq growth (- y bot -1)))
(t (when (< (- bot y) window-min-height)
(setq y (- bot window-min-height)))
(setq growth (- top y))))
(setq wconfig (current-window-configuration))
(when (and (/= growth 0)
(not minibuffer)
(one-window-p t))
(error "Attempt to resize sole window"))
(if should-enlarge-minibuffer
(unless resize-mini-windows
(mouse-drag-move-window-bottom start-event-window growth))
(if mode-line-p
(mouse-drag-move-window-bottom start-event-window growth)
(mouse-drag-move-window-top start-event-window growth)))
(when (or (/= start-nwindows (count-windows t))
(and (not should-enlarge-minibuffer)
(> growth 0)
mode-line-p
(/= top (nth 1 (window-edges)))))
(set-window-configuration wconfig)))))))))
(defun mouse-drag-mode-line (start-event)
"Change the height of a window by dragging on the mode line."
(interactive "e")
(mouse-drag-mode-line-1 start-event t))
(defun mouse-drag-header-line (start-event)
"Change the height of a window by dragging on the header line.
Windows whose header-lines are at the top of the frame cannot be
resized by dragging their header-line."
(interactive "e")
(let* ((start (event-start start-event))
(window (posn-window start))
(frame (window-frame window))
(first-window (frame-first-window frame)))
(unless (or (eq window first-window)
(= (nth 1 (window-edges window))
(nth 1 (window-edges first-window))))
(mouse-drag-mode-line-1 start-event nil))))
(defun mouse-drag-vertical-line-rightward-window (window)
"Return a window that is immediately to the right of WINDOW, or nil."
(let ((bottom (nth 3 (window-inside-edges window)))
(left (nth 0 (window-inside-edges window)))
best best-right
(try (previous-window window)))
(while (not (eq try window))
(let ((try-top (nth 1 (window-inside-edges try)))
(try-bottom (nth 3 (window-inside-edges try)))
(try-right (nth 2 (window-inside-edges try))))
(if (and (< try-top bottom)
(>= try-bottom bottom)
(< try-right left)
(or (null best-right) (> try-right best-right)))
(setq best-right try-right best try)))
(setq try (previous-window try)))
best))
(defun mouse-drag-vertical-line (start-event)
"Change the width of a window by dragging on the vertical line."
(interactive "e")
(run-hooks 'mouse-leave-buffer-hook)
(let* ((done nil)
(echo-keystrokes 0)
(start-event-frame (window-frame (car (car (cdr start-event)))))
(start-event-window (car (car (cdr start-event))))
event mouse x left right edges growth
(which-side
(or (cdr (assq 'vertical-scroll-bars (frame-parameters start-event-frame)))
'right)))
(cond
((one-window-p t)
(error "Attempt to resize sole ordinary window"))
((and (eq which-side 'right)
(>= (nth 2 (window-inside-edges start-event-window))
(frame-width start-event-frame)))
(error "Attempt to drag rightmost scrollbar"))
((and (eq which-side 'left)
(= (nth 0 (window-inside-edges start-event-window)) 0))
(error "Attempt to drag leftmost scrollbar")))
(track-mouse
(progn
(while (not done)
(setq event (read-event)
mouse (mouse-position))
(cond ((integerp event)
(setq done t))
((memq (car event) '(switch-frame select-window))
nil)
((not (memq (car event)
'(mouse-movement scroll-bar-movement)))
(if (consp event)
(setq unread-command-events
(cons event unread-command-events)))
(setq done t))
((not (eq (car mouse) start-event-frame))
nil)
((null (car (cdr mouse)))
nil)
(t
(let ((window
(if (eq which-side 'right)
start-event-window
(mouse-drag-vertical-line-rightward-window
start-event-window))))
(setq x (- (car (cdr mouse))
(if (eq which-side 'right) 0 2))
edges (window-edges window)
left (nth 0 edges)
right (nth 2 edges))
(if (< (- x left -1) window-min-width)
(setq x (+ left window-min-width -1)))
(setq growth (- x right -1))
(condition-case nil
(adjust-window-trailing-edge window growth t)
(error nil))))))))))
(defun mouse-set-point (event)
"Move point to the position clicked on with the mouse.
This should be bound to a mouse click event type."
(interactive "e")
(mouse-minibuffer-check event)
(posn-set-point (event-end event)))
(defvar mouse-last-region-beg nil)
(defvar mouse-last-region-end nil)
(defvar mouse-last-region-tick nil)
(defun mouse-region-match ()
"Return non-nil if there's an active region that was set with the mouse."
(and (mark t) mark-active
(eq mouse-last-region-beg (region-beginning))
(eq mouse-last-region-end (region-end))
(eq mouse-last-region-tick (buffer-modified-tick))))
(defun mouse-set-region (click)
"Set the region to the text dragged over, and copy to kill ring.
This should be bound to a mouse drag event."
(interactive "e")
(mouse-minibuffer-check click)
(let ((posn (event-start click))
(end (event-end click)))
(select-window (posn-window posn))
(if (numberp (posn-point posn))
(goto-char (posn-point posn)))
(or transient-mark-mode
(memq (framep (selected-frame)) '(x pc w32 mac))
(sit-for 1))
(push-mark)
(set-mark (point))
(if (numberp (posn-point end))
(goto-char (posn-point end)))
(when mouse-drag-copy-region
(let (this-command last-command deactivate-mark)
(copy-region-as-kill (mark) (point))))
(mouse-set-region-1)))
(defun mouse-set-region-1 ()
(if (memq transient-mark-mode '(nil identity))
(setq transient-mark-mode 'only))
(setq mouse-last-region-beg (region-beginning))
(setq mouse-last-region-end (region-end))
(setq mouse-last-region-tick (buffer-modified-tick)))
(defcustom mouse-scroll-delay 0.25
"*The pause between scroll steps caused by mouse drags, in seconds.
If you drag the mouse beyond the edge of a window, Emacs scrolls the
window to bring the text beyond that edge into view, with a delay of
this many seconds between scroll steps. Scrolling stops when you move
the mouse back into the window, or release the button.
This variable's value may be non-integral.
Setting this to zero causes Emacs to scroll as fast as it can."
:type 'number
:group 'mouse)
(defcustom mouse-scroll-min-lines 1
"*The minimum number of lines scrolled by dragging mouse out of window.
Moving the mouse out the top or bottom edge of the window begins
scrolling repeatedly. The number of lines scrolled per repetition
is normally equal to the number of lines beyond the window edge that
the mouse has moved. However, it always scrolls at least the number
of lines specified by this variable."
:type 'integer
:group 'mouse)
(defun mouse-scroll-subr (window jump &optional overlay start)
"Scroll the window WINDOW, JUMP lines at a time, until new input arrives.
If OVERLAY is an overlay, let it stretch from START to the far edge of
the newly visible text.
Upon exit, point is at the far edge of the newly visible text."
(cond
((and (> jump 0) (< jump mouse-scroll-min-lines))
(setq jump mouse-scroll-min-lines))
((and (< jump 0) (< (- jump) mouse-scroll-min-lines))
(setq jump (- mouse-scroll-min-lines))))
(let ((opoint (point)))
(while (progn
(goto-char (window-start window))
(if (not (zerop (vertical-motion jump window)))
(progn
(set-window-start window (point))
(if (natnump jump)
(if (window-end window)
(progn
(goto-char (window-end window))
(vertical-motion (1- jump) window))
(vertical-motion (- (window-height window) 2)))
(goto-char (window-start window)))
(if overlay
(move-overlay overlay start (point)))
(or (eq window (selected-window))
(goto-char opoint))
(sit-for mouse-scroll-delay)))))
(or (eq window (selected-window))
(goto-char opoint))))
(defconst mouse-drag-overlay
(let ((ol (make-overlay (point-min) (point-min))))
(delete-overlay ol)
(overlay-put ol 'face 'region)
ol))
(defvar mouse-selection-click-count 0)
(defvar mouse-selection-click-count-buffer nil)
(defun mouse-drag-region (start-event)
"Set the region to the text that the mouse is dragged over.
Highlight the drag area as you move the mouse.
This must be bound to a button-down mouse event.
In Transient Mark mode, the highlighting remains as long as the mark
remains active. Otherwise, it remains until the next input event.
If the click is in the echo area, display the `*Messages*' buffer."
(interactive "e")
(let ((w (posn-window (event-start start-event))))
(if (and (window-minibuffer-p w)
(not (minibuffer-window-active-p w)))
(save-excursion
(read-event)
(set-buffer (get-buffer-create "*Messages*"))
(goto-char (point-max))
(display-buffer (current-buffer)))
(run-hooks 'mouse-leave-buffer-hook)
(mouse-drag-track start-event t))))
(defun mouse-posn-property (pos property)
"Look for a property at click position.
POS may be either a buffer position or a click position like
those returned from `event-start'. If the click position is on
a string, the text property PROPERTY is examined.
If this is nil or the click is not on a string, then
the corresponding buffer position is searched for PROPERTY.
If PROPERTY is encountered in one of those places,
its value is returned."
(if (consp pos)
(let ((w (posn-window pos)) (pt (posn-point pos))
(str (posn-string pos)))
(or (and str
(get-text-property (cdr str) property (car str)))
(and pt
(get-char-property pt property w))))
(get-char-property pos property)))
(defun mouse-on-link-p (pos)
"Return non-nil if POS is on a link in the current buffer.
POS must be a buffer position in the current buffer or a mouse
event location in the selected window (see `event-start').
However, if `mouse-1-click-in-non-selected-windows' is non-nil,
POS may be a mouse event location in any window.
A clickable link is identified by one of the following methods:
- If the character at POS has a non-nil `follow-link' text or
overlay property, the value of that property determines what to do.
- If there is a local key-binding or a keybinding at position POS
for the `follow-link' event, the binding of that event determines
what to do.
The resulting value determine whether POS is inside a link:
- If the value is `mouse-face', POS is inside a link if there
is a non-nil `mouse-face' property at POS. Return t in this case.
- If the value is a function, FUNC, POS is inside a link if
the call \(FUNC POS) returns non-nil. Return the return value
from that call. Arg is \(posn-point POS) if POS is a mouse event.
- Otherwise, return the value itself.
The return value is interpreted as follows:
- If it is a string, the mouse-1 event is translated into the
first character of the string, i.e. the action of the mouse-1
click is the local or global binding of that character.
- If it is a vector, the mouse-1 event is translated into the
first element of that vector, i.e. the action of the mouse-1
click is the local or global binding of that event.
- Otherwise, the mouse-1 event is translated into a mouse-2 event
at the same position."
(let ((action
(and (or (not (consp pos))
mouse-1-click-in-non-selected-windows
(eq (selected-window) (posn-window pos)))
(or (mouse-posn-property pos 'follow-link)
(key-binding [follow-link] nil t pos)))))
(cond
((eq action 'mouse-face)
(and (mouse-posn-property pos 'mouse-face) t))
((functionp action)
(if (consp pos)
(with-current-buffer (window-buffer (posn-window pos))
(funcall action (posn-point pos)))
(funcall action pos)))
(t action))))
(defun mouse-fixup-help-message (msg)
"Fix help message MSG for `mouse-1-click-follows-link'."
(let (mp pos)
(if (and mouse-1-click-follows-link
(stringp msg)
(save-match-data
(string-match "^mouse-2" msg))
(setq mp (mouse-pixel-position))
(consp (setq pos (cdr mp)))
(car pos) (>= (car pos) 0)
(cdr pos) (>= (cdr pos) 0)
(setq pos (posn-at-x-y (car pos) (cdr pos) (car mp)))
(windowp (posn-window pos)))
(with-current-buffer (window-buffer (posn-window pos))
(if (mouse-on-link-p pos)
(setq msg (concat
(cond
((eq mouse-1-click-follows-link 'double) "double-")
((and (integerp mouse-1-click-follows-link)
(< mouse-1-click-follows-link 0)) "Long ")
(t ""))
"mouse-1" (substring msg 7)))))))
msg)
(defun mouse-move-drag-overlay (ol start end mode)
(unless (= start end)
(goto-char start)
(goto-char end)
(setq end (point)))
(let ((range (mouse-start-end start end mode)))
(move-overlay ol (car range) (nth 1 range))))
(defun mouse-drag-track (start-event &optional
do-mouse-drag-region-post-process)
"Track mouse drags by highlighting area between point and cursor.
The region will be defined with mark and point, and the overlay
will be deleted after return. DO-MOUSE-DRAG-REGION-POST-PROCESS
should only be used by mouse-drag-region."
(mouse-minibuffer-check start-event)
(setq mouse-selection-click-count-buffer (current-buffer))
(let* ((original-window (selected-window))
(_ (mouse-set-point start-event))
(echo-keystrokes 0)
(start-posn (event-start start-event))
(start-point (posn-point start-posn))
(start-window (posn-window start-posn))
(start-window-start (window-start start-window))
(start-hscroll (window-hscroll start-window))
(bounds (window-edges start-window))
(make-cursor-line-fully-visible nil)
(top (nth 1 bounds))
(bottom (if (window-minibuffer-p start-window)
(nth 3 bounds)
(1- (nth 3 bounds))))
(on-link (and mouse-1-click-follows-link
(or mouse-1-click-in-non-selected-windows
(eq start-window original-window))
(mouse-on-link-p start-posn)))
(click-count (1- (event-click-count start-event)))
(remap-double-click (and on-link
(eq mouse-1-click-follows-link 'double)
(= click-count 1)))
(automatic-hscrolling-saved automatic-hscrolling)
(automatic-hscrolling nil))
(setq mouse-selection-click-count click-count)
(if (< (point) start-point)
(goto-char start-point))
(setq start-point (point))
(if remap-double-click (setq click-count 0))
(mouse-move-drag-overlay mouse-drag-overlay start-point start-point
click-count)
(overlay-put mouse-drag-overlay 'window start-window)
(deactivate-mark)
(let (event end end-point last-end-point)
(track-mouse
(while (progn
(setq event (read-event))
(or (mouse-movement-p event)
(memq (car-safe event) '(switch-frame select-window))))
(if (memq (car-safe event) '(switch-frame select-window))
nil
(let ((automatic-hscrolling automatic-hscrolling-saved))
(redisplay))
(setq end (event-end event)
end-point (posn-point end))
(if (numberp end-point)
(setq last-end-point end-point))
(cond
((and (eq (posn-window end) start-window)
(integer-or-marker-p end-point))
(mouse-move-drag-overlay mouse-drag-overlay start-point end-point click-count))
(t
(let ((mouse-row (cdr (cdr (mouse-position)))))
(cond
((null mouse-row))
((< mouse-row top)
(mouse-scroll-subr start-window (- mouse-row top)
mouse-drag-overlay start-point))
((>= mouse-row bottom)
(mouse-scroll-subr start-window (1+ (- mouse-row bottom))
mouse-drag-overlay start-point)))))))))
(when (and (memq 'drag (event-modifiers (car-safe event)))
(setq end (event-end event)
end-point (posn-point end))
(eq (posn-window end) start-window)
(integer-or-marker-p end-point))
(mouse-move-drag-overlay mouse-drag-overlay start-point end-point click-count))
(if (consp event)
(let* ((fun (key-binding (vector (car event))))
(do-multi-click (and (> (event-click-count event) 0)
(functionp fun)
(not (memq fun
'(mouse-set-point
mouse-set-region))))))
(if (and (not (= (overlay-start mouse-drag-overlay)
(overlay-end mouse-drag-overlay)))
(not do-multi-click))
(let* ((stop-point
(if (numberp (posn-point (event-end event)))
(posn-point (event-end event))
last-end-point))
(region-termination
(if (and stop-point (< stop-point start-point))
(overlay-start mouse-drag-overlay)
(overlay-end mouse-drag-overlay)))
(region-commencement
(- (+ (overlay-end mouse-drag-overlay)
(overlay-start mouse-drag-overlay))
region-termination))
last-command this-command)
(push-mark region-commencement t t)
(goto-char region-termination)
(if (not do-mouse-drag-region-post-process)
(delete-overlay mouse-drag-overlay)
(when mouse-drag-copy-region
(let (deactivate-mark)
(copy-region-as-kill (point) (mark t))))
(let ((buffer (current-buffer)))
(mouse-show-mark)
(and (mark t) mark-active
(eq buffer (current-buffer))
(mouse-set-region-1)))))
(if do-multi-click (goto-char start-point))
(delete-overlay mouse-drag-overlay)
(when (and (functionp fun)
(= start-hscroll (window-hscroll start-window))
(or end-point
(= (window-start start-window)
start-window-start)))
(when (and on-link
(or (not end-point) (= end-point start-point))
(consp event)
(or remap-double-click
(and
(not (eq mouse-1-click-follows-link 'double))
(= click-count 0)
(= (event-click-count event) 1)
(or (not (integerp mouse-1-click-follows-link))
(let ((t0 (posn-timestamp (event-start start-event)))
(t1 (posn-timestamp (event-end event))))
(and (integerp t0) (integerp t1)
(if (> mouse-1-click-follows-link 0)
(<= (- t1 t0) mouse-1-click-follows-link)
(< (- t0 t1) mouse-1-click-follows-link))))))))
(if (or (vectorp on-link) (stringp on-link))
(setq event (aref on-link 0))
(select-window original-window)
(setcar event 'mouse-2)
(put 'mouse-2 'event-kind 'mouse-click)))
(push event unread-command-events))))
(delete-overlay mouse-drag-overlay)))))
(defun mouse-skip-word (dir)
"Skip over word, over whitespace, or over identical punctuation.
If DIR is positive skip forward; if negative, skip backward."
(let* ((char (following-char))
(syntax (char-to-string (char-syntax char))))
(cond ((string= syntax "w")
(if (< dir 0)
(if (not (looking-at "\\<"))
(forward-word -1))
(if (or (looking-at "\\<") (not (looking-at "\\>")))
(forward-word 1))))
((string= syntax " ")
(if (< dir 0)
(skip-syntax-backward syntax)
(skip-syntax-forward syntax)))
((string= syntax "_")
(if (< dir 0)
(skip-syntax-backward "w_")
(skip-syntax-forward "w_")))
((< dir 0)
(while (and (not (bobp)) (= (preceding-char) char))
(forward-char -1)))
(t
(while (and (not (eobp)) (= (following-char) char))
(forward-char 1))))))
(defun mouse-start-end (start end mode)
"Return a list of region bounds based on START and END according to MODE.
If MODE is 0 then set point to (min START END), mark to (max START END).
If MODE is 1 then set point to start of word at (min START END),
mark to end of word at (max START END).
If MODE is 2 then do the same for lines."
(if (> start end)
(let ((temp start))
(setq start end
end temp)))
(setq mode (mod mode 3))
(cond ((= mode 0)
(list start end))
((and (= mode 1)
(= start end)
(char-after start)
(= (char-syntax (char-after start)) ?\())
(list start
(save-excursion
(goto-char start)
(forward-sexp 1)
(point))))
((and (= mode 1)
(= start end)
(char-after start)
(= (char-syntax (char-after start)) ?\)))
(list (save-excursion
(goto-char (1+ start))
(backward-sexp 1)
(point))
(1+ start)))
((and (= mode 1)
(= start end)
(char-after start)
(= (char-syntax (char-after start)) ?\"))
(let ((open (or (eq start (point-min))
(save-excursion
(goto-char (- start 1))
(looking-at "\\s(\\|\\s \\|\\s>")))))
(if open
(list start
(save-excursion
(condition-case nil
(progn
(goto-char start)
(forward-sexp 1)
(point))
(error end))))
(list (save-excursion
(condition-case nil
(progn
(goto-char (1+ start))
(backward-sexp 1)
(point))
(error end)))
(1+ start)))))
((= mode 1)
(list (save-excursion
(goto-char start)
(mouse-skip-word -1)
(point))
(save-excursion
(goto-char end)
(mouse-skip-word 1)
(point))))
((= mode 2)
(list (save-excursion
(goto-char start)
(beginning-of-line 1)
(point))
(save-excursion
(goto-char end)
(forward-line 1)
(point))))))
;; Subroutine: set the mark where CLICK happened,
;; but don't do anything else.
(defun mouse-set-mark-fast (click)
(mouse-minibuffer-check click)
(let ((posn (event-start click)))
(select-window (posn-window posn))
(if (numberp (posn-point posn))
(push-mark (posn-point posn) t t))))
(defun mouse-undouble-last-event (events)
(let* ((index (1- (length events)))
(last (nthcdr index events))
(event (car last))
(basic (event-basic-type event))
(old-modifiers (event-modifiers event))
(modifiers (delq 'double (delq 'triple (copy-sequence old-modifiers))))
(new
(if (consp event)
;; Use reverse, not nreverse, since event-modifiers
;; does not copy the list it returns.
(cons (event-convert-list (reverse (cons basic modifiers)))
(cdr event))
event)))
(setcar last new)
(if (and (not (equal modifiers old-modifiers))
(key-binding (apply 'vector events)))
t
(setcar last event)
nil)))
;; Momentarily show where the mark is, if highlighting doesn't show it.
(defcustom mouse-region-delete-keys '([delete] [deletechar] [backspace])
"List of keys that should cause the mouse region to be deleted."
:group 'mouse
:type '(repeat key-sequence))
(defun mouse-show-mark ()
(let ((inhibit-quit t)
(echo-keystrokes 0)
event events key ignore
(x-lost-selection-functions
(when (boundp 'x-lost-selection-functions)
(copy-sequence x-lost-selection-functions))))
(add-hook 'x-lost-selection-functions
(lambda (seltype)
(when (eq seltype 'PRIMARY)
(setq ignore t)
(throw 'mouse-show-mark t))))
(if transient-mark-mode
(delete-overlay mouse-drag-overlay)
(move-overlay mouse-drag-overlay (point) (mark t)))
(catch 'mouse-show-mark
;; In this loop, execute scroll bar and switch-frame events.
;; Should we similarly handle `select-window' events? --Stef
;; Also ignore down-events that are undefined.
(while (progn (setq event (read-event))
(setq events (append events (list event)))
(setq key (apply 'vector events))
(or (and (consp event)
(eq (car event) 'switch-frame))
(and (consp event)
(eq (posn-point (event-end event))
'vertical-scroll-bar))
(and (memq 'down (event-modifiers event))
(not (key-binding key))
(not (mouse-undouble-last-event events))
(not (member key mouse-region-delete-keys)))))
(and (consp event)
(or (eq (car event) 'switch-frame)
(eq (posn-point (event-end event))
'vertical-scroll-bar))
(let ((keys (vector 'vertical-scroll-bar event)))
(and (key-binding keys)
(progn
(call-interactively (key-binding keys)
nil keys)
(setq events nil)))))))
;; If we lost the selection, just turn off the highlighting.
(unless ignore
;; For certain special keys, delete the region.
(if (member key mouse-region-delete-keys)
(progn
;; Since notionally this is a separate command,
;; run all the hooks that would be run if it were
;; executed separately.
(run-hooks 'post-command-hook)
(setq last-command this-command)
(setq this-original-command 'delete-region)
(setq this-command (or (command-remapping this-original-command)
this-original-command))
(run-hooks 'pre-command-hook)
(call-interactively this-command))
;; Otherwise, unread the key so it gets executed normally.
(setq unread-command-events
(nconc events unread-command-events))))
(setq quit-flag nil)
(unless transient-mark-mode
(delete-overlay mouse-drag-overlay))))
(defun mouse-set-mark (click)
"Set mark at the position clicked on with the mouse.
Display cursor at that position for a second.
This must be bound to a mouse click."
(interactive "e")
(mouse-minibuffer-check click)
(select-window (posn-window (event-start click)))
;; We don't use save-excursion because that preserves the mark too.
(let ((point-save (point)))
(unwind-protect
(progn (mouse-set-point click)
(push-mark nil t t)
(or transient-mark-mode
(sit-for 1)))
(goto-char point-save))))
(defun mouse-kill (click)
"Kill the region between point and the mouse click.
The text is saved in the kill ring, as with \\[kill-region]."
(interactive "e")
(mouse-minibuffer-check click)
(let* ((posn (event-start click))
(click-posn (posn-point posn)))
(select-window (posn-window posn))
(if (numberp click-posn)
(kill-region (min (point) click-posn)
(max (point) click-posn)))))
(defun mouse-yank-at-click (click arg)
"Insert the last stretch of killed text at the position clicked on.
Also move point to one end of the text thus inserted (normally the end),
and set mark at the beginning.
Prefix arguments are interpreted as with \\[yank].
If `mouse-yank-at-point' is non-nil, insert at point
regardless of where you click."
(interactive "e\nP")
;; Give temporary modes such as isearch a chance to turn off.
(run-hooks 'mouse-leave-buffer-hook)
(or mouse-yank-at-point (mouse-set-point click))
(setq this-command 'yank)
(setq mouse-selection-click-count 0)
(yank arg))
(defun mouse-kill-ring-save (click)
"Copy the region between point and the mouse click in the kill ring.
This does not delete the region (interactive "e")
(mouse-set-mark-fast click)
(let (this-command last-command)
(kill-ring-save (point) (mark t)))
(mouse-show-mark))
(defvar mouse-save-then-kill-posn nil)
(defun mouse-save-then-kill-delete-region (beg end)
(undo-boundary)
(if (or (= beg end) (eq buffer-undo-list t))
(delete-region beg end)
(let (before-change-functions after-change-functions)
(delete-region beg
(+ beg (if (> end beg) 1 -1))))
(let ((buffer-undo-list buffer-undo-list))
(let (before-change-functions after-change-functions)
(primitive-undo 1 buffer-undo-list))
(setq buffer-undo-list t)
(if (/= (length (car kill-ring)) (- (max end beg) (min end beg)))
(error "Lossage in mouse-save-then-kill-delete-region"))
(delete-region beg end))
(let ((tail buffer-undo-list))
(while (and tail (not (stringp (car (car tail)))))
(setq tail (cdr tail)))
(and tail
(setcar tail (cons (car kill-ring) (min beg end))))))
(undo-boundary))
(defun mouse-save-then-kill (click)
"Save text to point in kill ring; the second time, kill the text.
If the text between point and the mouse is the same as what's
at the front of the kill ring, this deletes the text.
Otherwise, it adds the text to the kill ring, like \\[kill-ring-save],
which prepares for a second click to delete the text.
If you have selected words or lines, this command extends the
selection through the word or line clicked on. If you do this
again in a different position, it extends the selection again.
If you do this twice in the same position, the selection is killed."
(interactive "e")
(let ((before-scroll
(with-current-buffer (window-buffer (posn-window (event-start click)))
point-before-scroll)))
(mouse-minibuffer-check click)
(let ((click-posn (posn-point (event-start click)))
(this-command this-command))
(if (and (with-current-buffer
(window-buffer (posn-window (event-start click)))
(and (mark t) (> (mod mouse-selection-click-count 3) 0)
(eq mouse-selection-click-count-buffer
(current-buffer)))))
(if (not (and (eq last-command 'mouse-save-then-kill)
(equal click-posn
(car (cdr-safe (cdr-safe mouse-save-then-kill-posn))))))
(let* ((range
(mouse-start-end click-posn click-posn
mouse-selection-click-count)))
(if (< (abs (- click-posn (mark t)))
(abs (- click-posn (point))))
(set-mark (car range))
(goto-char (nth 1 range)))
(kill-new (buffer-substring (point) (mark t)) t)
(mouse-set-region-1)
(setq mouse-save-then-kill-posn
(list (car kill-ring) (point) click-posn))
(mouse-show-mark))
(mouse-save-then-kill-delete-region (mark) (point))
(setq mouse-selection-click-count 0)
(setq mouse-save-then-kill-posn nil))
(if (and (eq last-command 'mouse-save-then-kill)
mouse-save-then-kill-posn
(eq (car mouse-save-then-kill-posn) (car kill-ring))
(equal (cdr mouse-save-then-kill-posn) (list (point) click-posn)))
(progn
(mouse-save-then-kill-delete-region (point) (mark))
(setq mouse-save-then-kill-posn nil))
(if (or (and (eq last-command 'mouse-save-then-kill)
mouse-save-then-kill-posn)
(and mark-active transient-mark-mode)
(and (memq last-command
'(mouse-drag-region mouse-set-region))
(or mark-even-if-inactive
(not transient-mark-mode))))
(let* ((posn (event-start click))
(new (posn-point posn)))
(select-window (posn-window posn))
(if (numberp new)
(progn
(if (<= (abs (- new (point))) (abs (- new (mark t))))
(goto-char new)
(set-mark new))
(setq deactivate-mark nil)))
(kill-new (buffer-substring (point) (mark t)) t))
(mouse-set-mark-fast click)
(if before-scroll
(goto-char before-scroll))
(exchange-point-and-mark) (kill-new (buffer-substring (point) (mark t))))
(mouse-show-mark)
(mouse-set-region-1)
(setq mouse-save-then-kill-posn
(list (car kill-ring) (point) click-posn)))))))
(global-set-key [M-mouse-1] 'mouse-start-secondary)
(global-set-key [M-drag-mouse-1] 'mouse-set-secondary)
(global-set-key [M-down-mouse-1] 'mouse-drag-secondary)
(global-set-key [M-mouse-3] 'mouse-secondary-save-then-kill)
(global-set-key [M-mouse-2] 'mouse-yank-secondary)
(defconst mouse-secondary-overlay
(let ((ol (make-overlay (point-min) (point-min))))
(delete-overlay ol)
(overlay-put ol 'face 'secondary-selection)
ol)
"An overlay which records the current secondary selection.
It is deleted when there is no secondary selection.")
(defvar mouse-secondary-click-count 0)
(defvar mouse-secondary-start nil)
(defun mouse-start-secondary (click)
"Set one end of the secondary selection to the position clicked on.
Use \\[mouse-secondary-save-then-kill] to set the other end
and complete the secondary selection."
(interactive "e")
(mouse-minibuffer-check click)
(let ((posn (event-start click)))
(with-current-buffer (window-buffer (posn-window posn))
(delete-overlay mouse-secondary-overlay)
(if (numberp (posn-point posn))
(progn
(or mouse-secondary-start
(setq mouse-secondary-start (make-marker)))
(move-marker mouse-secondary-start (posn-point posn)))))))
(defun mouse-set-secondary (click)
"Set the secondary selection to the text that the mouse is dragged over.
This must be bound to a mouse drag event."
(interactive "e")
(mouse-minibuffer-check click)
(let ((posn (event-start click))
beg
(end (event-end click)))
(with-current-buffer (window-buffer (posn-window posn))
(if (numberp (posn-point posn))
(setq beg (posn-point posn)))
(move-overlay mouse-secondary-overlay beg (posn-point end))
(x-set-selection
'SECONDARY
(buffer-substring (overlay-start mouse-secondary-overlay)
(overlay-end mouse-secondary-overlay))))))
(defun mouse-drag-secondary (start-event)
"Set the secondary selection to the text that the mouse is dragged over.
Highlight the drag area as you move the mouse.
This must be bound to a button-down mouse event.
The function returns a non-nil value if it creates a secondary selection."
(interactive "e")
(mouse-minibuffer-check start-event)
(let* ((echo-keystrokes 0)
(start-posn (event-start start-event))
(start-point (posn-point start-posn))
(start-window (posn-window start-posn))
(bounds (window-edges start-window))
(top (nth 1 bounds))
(bottom (if (window-minibuffer-p start-window)
(nth 3 bounds)
(1- (nth 3 bounds))))
(click-count (1- (event-click-count start-event))))
(with-current-buffer (window-buffer start-window)
(setq mouse-secondary-click-count click-count)
(if (> (mod click-count 3) 0)
(let ((range (mouse-start-end start-point start-point click-count)))
(set-marker mouse-secondary-start nil)
(move-overlay mouse-secondary-overlay (car range) (nth 1 range)
(window-buffer start-window)))
(or mouse-secondary-start
(setq mouse-secondary-start (make-marker)))
(set-marker mouse-secondary-start start-point)
(delete-overlay mouse-secondary-overlay))
(let (event end end-point)
(track-mouse
(while (progn
(setq event (read-event))
(or (mouse-movement-p event)
(memq (car-safe event) '(switch-frame select-window))))
(if (memq (car-safe event) '(switch-frame select-window))
nil
(setq end (event-end event)
end-point (posn-point end))
(cond
((and (eq (posn-window end) start-window)
(integer-or-marker-p end-point))
(let ((range (mouse-start-end start-point end-point
click-count)))
(if (or (/= start-point end-point)
(null (marker-position mouse-secondary-start)))
(progn
(set-marker mouse-secondary-start nil)
(move-overlay mouse-secondary-overlay
(car range) (nth 1 range))))))
(t
(let ((mouse-row (cdr (cdr (mouse-position)))))
(cond
((null mouse-row))
((< mouse-row top)
(mouse-scroll-subr start-window (- mouse-row top)
mouse-secondary-overlay start-point))
((>= mouse-row bottom)
(mouse-scroll-subr start-window (1+ (- mouse-row bottom))
mouse-secondary-overlay start-point)))))))))
(if (consp event)
(if (marker-position mouse-secondary-start)
(save-window-excursion
(delete-overlay mouse-secondary-overlay)
(x-set-selection 'SECONDARY nil)
(select-window start-window)
(save-excursion
(goto-char mouse-secondary-start)
(sit-for 1)
nil))
(x-set-selection
'SECONDARY
(buffer-substring (overlay-start mouse-secondary-overlay)
(overlay-end mouse-secondary-overlay)))))))))
(defun mouse-yank-secondary (click)
"Insert the secondary selection at the position clicked on.
Move point to the end of the inserted text.
If `mouse-yank-at-point' is non-nil, insert at point
regardless of where you click."
(interactive "e")
(run-hooks 'mouse-leave-buffer-hook)
(or mouse-yank-at-point (mouse-set-point click))
(insert (x-get-selection 'SECONDARY)))
(defun mouse-kill-secondary ()
"Kill the text in the secondary selection.
This is intended more as a keyboard command than as a mouse command
but it can work as either one.
The current buffer (in case of keyboard use), or the buffer clicked on,
must be the one that the secondary selection is in. This requirement
is to prevent accidents."
(interactive)
(let* ((keys (this-command-keys))
(click (elt keys (1- (length keys)))))
(or (eq (overlay-buffer mouse-secondary-overlay)
(if (listp click)
(window-buffer (posn-window (event-start click)))
(current-buffer)))
(error "Select or click on the buffer where the secondary selection is")))
(let (this-command)
(with-current-buffer (overlay-buffer mouse-secondary-overlay)
(kill-region (overlay-start mouse-secondary-overlay)
(overlay-end mouse-secondary-overlay))))
(delete-overlay mouse-secondary-overlay)
)
(defun mouse-secondary-save-then-kill (click)
"Save text to point in kill ring; the second time, kill the text.
You must use this in a buffer where you have recently done \\[mouse-start-secondary].
If the text between where you did \\[mouse-start-secondary] and where
you use this command matches the text at the front of the kill ring,
this command deletes the text.
Otherwise, it adds the text to the kill ring, like \\[kill-ring-save],
which prepares for a second click with this command to delete the text.
If you have already made a secondary selection in that buffer,
this command extends or retracts the selection to where you click.
If you do this again in a different position, it extends or retracts
again. If you do this twice in the same position, it kills the selection."
(interactive "e")
(mouse-minibuffer-check click)
(let ((posn (event-start click))
(click-posn (posn-point (event-start click)))
(this-command this-command))
(or (eq (window-buffer (posn-window posn))
(or (overlay-buffer mouse-secondary-overlay)
(if mouse-secondary-start
(marker-buffer mouse-secondary-start))))
(error "Wrong buffer"))
(with-current-buffer (window-buffer (posn-window posn))
(if (> (mod mouse-secondary-click-count 3) 0)
(if (not (and (eq last-command 'mouse-secondary-save-then-kill)
(equal click-posn
(car (cdr-safe (cdr-safe mouse-save-then-kill-posn))))))
(let* ((range
(mouse-start-end click-posn click-posn
mouse-secondary-click-count)))
(if (< (abs (- click-posn (overlay-start mouse-secondary-overlay)))
(abs (- click-posn (overlay-end mouse-secondary-overlay))))
(move-overlay mouse-secondary-overlay (car range)
(overlay-end mouse-secondary-overlay))
(move-overlay mouse-secondary-overlay
(overlay-start mouse-secondary-overlay)
(nth 1 range)))
(kill-new (buffer-substring
(overlay-start mouse-secondary-overlay)
(overlay-end mouse-secondary-overlay)) t)
(setq mouse-save-then-kill-posn
(list (car kill-ring) (point) click-posn)))
(progn
(mouse-save-then-kill-delete-region
(overlay-start mouse-secondary-overlay)
(overlay-end mouse-secondary-overlay))
(setq mouse-save-then-kill-posn nil)
(setq mouse-secondary-click-count 0)
(delete-overlay mouse-secondary-overlay)))
(if (and (eq last-command 'mouse-secondary-save-then-kill)
mouse-save-then-kill-posn
(eq (car mouse-save-then-kill-posn) (car kill-ring))
(equal (cdr mouse-save-then-kill-posn) (list (point) click-posn)))
(progn
(mouse-save-then-kill-delete-region
(overlay-start mouse-secondary-overlay)
(overlay-end mouse-secondary-overlay))
(setq mouse-save-then-kill-posn nil)
(delete-overlay mouse-secondary-overlay))
(if (overlay-start mouse-secondary-overlay)
(progn
(if (numberp click-posn)
(progn
(if (< (abs (- click-posn (overlay-start mouse-secondary-overlay)))
(abs (- click-posn (overlay-end mouse-secondary-overlay))))
(move-overlay mouse-secondary-overlay click-posn
(overlay-end mouse-secondary-overlay))
(move-overlay mouse-secondary-overlay
(overlay-start mouse-secondary-overlay)
click-posn))
(setq deactivate-mark nil)))
(if (eq last-command 'mouse-secondary-save-then-kill)
(kill-new (buffer-substring
(overlay-start mouse-secondary-overlay)
(overlay-end mouse-secondary-overlay)) t)
(let (deactivate-mark)
(copy-region-as-kill (overlay-start mouse-secondary-overlay)
(overlay-end mouse-secondary-overlay)))))
(if mouse-secondary-start
(let ((start (+ 0 mouse-secondary-start)))
(kill-ring-save start click-posn)
(move-overlay mouse-secondary-overlay start click-posn))))
(setq mouse-save-then-kill-posn
(list (car kill-ring) (point) click-posn))))
(if (overlay-buffer mouse-secondary-overlay)
(x-set-selection 'SECONDARY
(buffer-substring
(overlay-start mouse-secondary-overlay)
(overlay-end mouse-secondary-overlay)))))))
(defcustom mouse-buffer-menu-maxlen 20
"*Number of buffers in one pane (submenu) of the buffer menu.
If we have lots of buffers, divide them into groups of
`mouse-buffer-menu-maxlen' and make a pane (or submenu) for each one."
:type 'integer
:group 'mouse)
(defcustom mouse-buffer-menu-mode-mult 4
"*Group the buffers by the major mode groups on \\[mouse-buffer-menu]?
This number which determines (in a hairy way) whether \\[mouse-buffer-menu]
will split the buffer menu by the major modes (see
`mouse-buffer-menu-mode-groups') or just by menu length.
Set to 1 (or even 0!) if you want to group by major mode always, and to
a large number if you prefer a mixed multitude. The default is 4."
:type 'integer
:group 'mouse
:version "20.3")
(defvar mouse-buffer-menu-mode-groups
'(("Info\\|Help\\|Apropos\\|Man" . "Help")
("\\bVM\\b\\|\\bMH\\b\\|Message\\|Mail\\|Group\\|Score\\|Summary\\|Article"
. "Mail/News")
("\\<C\\>" . "C")
("ObjC" . "C")
("Text" . "Text")
("Outline" . "Text")
("\\(HT\\|SG\\|X\\|XHT\\)ML" . "SGML")
("log\\|diff\\|vc\\|cvs" . "Version Control") ("Lisp" . "Lisp"))
"How to group various major modes together in \\[mouse-buffer-menu].
Each element has the form (REGEXP . GROUPNAME).
If the major mode's name string matches REGEXP, use GROUPNAME instead.")
(defun mouse-buffer-menu (event)
"Pop up a menu of buffers for selection with the mouse.
This switches buffers in the window that you clicked on,
and selects that window."
(interactive "e")
(mouse-minibuffer-check event)
(let ((buffers (buffer-list)) alist menu split-by-major-mode sum-of-squares)
(let ((tail buffers))
(while tail
(with-current-buffer (car tail)
(let* ((adjusted-major-mode major-mode) elt)
(let ((tail mouse-buffer-menu-mode-groups))
(while tail
(if (string-match (car (car tail)) mode-name)
(setq adjusted-major-mode (cdr (car tail))))
(setq tail (cdr tail))))
(setq elt (assoc adjusted-major-mode split-by-major-mode))
(if (null elt)
(setq elt (list adjusted-major-mode
(if (stringp adjusted-major-mode)
adjusted-major-mode
mode-name))
split-by-major-mode (cons elt split-by-major-mode)))
(or (memq (car tail) (cdr (cdr elt)))
(setcdr (cdr elt) (cons (car tail) (cdr (cdr elt)))))))
(setq tail (cdr tail))))
(let ((tail split-by-major-mode))
(setq sum-of-squares 0)
(while tail
(setq sum-of-squares
(+ sum-of-squares
(let ((len (length (cdr (cdr (car tail)))))) (* len len))))
(setq tail (cdr tail))))
(if (< (* sum-of-squares mouse-buffer-menu-mode-mult)
(* (length buffers) (length buffers)))
(let (subdivided-menus (buffers-left (length buffers)))
(setq split-by-major-mode
(sort split-by-major-mode
(function (lambda (elt1 elt2)
(> (length elt1) (length elt2))))))
(while (and split-by-major-mode
(and (> (length (car split-by-major-mode)) 3)
(> (* buffers-left 10) (length buffers))))
(let ((this-mode-list (mouse-buffer-menu-alist
(cdr (cdr (car split-by-major-mode))))))
(and this-mode-list
(setq subdivided-menus
(cons (cons
(nth 1 (car split-by-major-mode))
this-mode-list)
subdivided-menus))))
(setq buffers-left
(- buffers-left (length (cdr (car split-by-major-mode)))))
(setq split-by-major-mode (cdr split-by-major-mode)))
(if split-by-major-mode
(let ((others-list
(mouse-buffer-menu-alist
(apply 'nconc (mapcar 'cddr split-by-major-mode)))))
(and others-list
(setq subdivided-menus
(cons (cons "Others" others-list)
subdivided-menus)))))
(setq menu (cons "Buffer Menu" (nreverse subdivided-menus))))
(progn
(setq alist (mouse-buffer-menu-alist buffers))
(setq menu (cons "Buffer Menu"
(mouse-buffer-menu-split "Select Buffer" alist)))))
(let ((buf (x-popup-menu event menu))
(window (posn-window (event-start event))))
(when buf
(select-window
(if (framep window) (frame-selected-window window)
window))
(switch-to-buffer buf)))))
(defun mouse-buffer-menu-alist (buffers)
(let (tail
(maxlen 0)
head)
(setq buffers
(sort buffers
(function (lambda (elt1 elt2)
(string< (buffer-name elt1) (buffer-name elt2))))))
(setq tail buffers)
(while tail
(or (eq ?\s (aref (buffer-name (car tail)) 0))
(setq maxlen
(max maxlen
(length (buffer-name (car tail))))))
(setq tail (cdr tail)))
(setq tail buffers)
(while tail
(let ((elt (car tail)))
(if (/= (aref (buffer-name elt) 0) ?\s)
(setq head
(cons
(cons
(format
(format "%%%ds %%s%%s %%s" maxlen)
(buffer-name elt)
(if (buffer-modified-p elt) "*" " ")
(save-excursion
(set-buffer elt)
(if buffer-read-only "%" " "))
(or (buffer-file-name elt)
(save-excursion
(set-buffer elt)
(if list-buffers-directory
(expand-file-name
list-buffers-directory)))
""))
elt)
head))))
(setq tail (cdr tail)))
(nreverse head)))
(defun mouse-buffer-menu-split (title alist)
(if (> (length alist) (/ (* mouse-buffer-menu-maxlen 3) 2))
(let ((alist alist) sublists next
(i 1))
(while alist
(setq next (nthcdr mouse-buffer-menu-maxlen alist))
(if next
(setcdr (nthcdr (1- mouse-buffer-menu-maxlen) alist)
nil))
(setq sublists (cons (cons (format "Buffers %d" i) alist)
sublists))
(setq i (1+ i))
(setq alist next))
(nreverse sublists))
(list (cons title alist))))
(defun mouse-choose-completion (event)
"Click on an alternative in the `*Completions*' buffer to choose it."
(interactive "e")
(run-hooks 'mouse-leave-buffer-hook)
(let ((buffer (window-buffer))
choice
base-size)
(save-excursion
(set-buffer (window-buffer (posn-window (event-start event))))
(if completion-reference-buffer
(setq buffer completion-reference-buffer))
(setq base-size completion-base-size)
(save-excursion
(goto-char (posn-point (event-start event)))
(let (beg end)
(if (and (not (eobp)) (get-text-property (point) 'mouse-face))
(setq end (point) beg (1+ (point))))
(if (null beg)
(error "No completion here"))
(setq beg (previous-single-property-change beg 'mouse-face))
(setq end (or (next-single-property-change end 'mouse-face)
(point-max)))
(setq choice (buffer-substring-no-properties beg end)))))
(let ((owindow (selected-window)))
(select-window (posn-window (event-start event)))
(if (and (one-window-p t 'selected-frame)
(window-dedicated-p (selected-window)))
(iconify-frame (selected-frame))
(or (window-dedicated-p (selected-window))
(bury-buffer)))
(select-window owindow))
(choose-completion-string choice buffer base-size)))
(defun font-menu-add-default ()
(let* ((default (cdr (assq 'font (frame-parameters (selected-frame)))))
(font-alist x-fixed-font-alist)
(elt (or (assoc "Misc" font-alist) (nth 1 font-alist))))
(if (assoc "Default" elt)
(delete (assoc "Default" elt) elt))
(setcdr elt
(cons (list "Default" default)
(cdr elt)))))
(defvar x-fixed-font-alist
'("Font menu"
("Misc"
("fixed" "fixed")
("6x10" "-misc-fixed-medium-r-normal--10-*-*-*-c-60-iso8859-1" "6x10")
("6x12"
"-misc-fixed-medium-r-semicondensed--12-*-*-*-c-60-iso8859-1" "6x12")
("6x13"
"-misc-fixed-medium-r-semicondensed--13-*-*-*-c-60-iso8859-1" "6x13")
("7x13" "-misc-fixed-medium-r-normal--13-*-*-*-c-70-iso8859-1" "7x13")
("7x14" "-misc-fixed-medium-r-normal--14-*-*-*-c-70-iso8859-1" "7x14")
("8x13" "-misc-fixed-medium-r-normal--13-*-*-*-c-80-iso8859-1" "8x13")
("9x15" "-misc-fixed-medium-r-normal--15-*-*-*-c-90-iso8859-1" "9x15")
("10x20" "-misc-fixed-medium-r-normal--20-*-*-*-c-100-iso8859-1" "10x20")
("11x18" "-misc-fixed-medium-r-normal--18-*-*-*-c-110-iso8859-1" "11x18")
("12x24" "-misc-fixed-medium-r-normal--24-*-*-*-c-120-iso8859-1" "12x24")
("")
("clean 5x8"
"-schumacher-clean-medium-r-normal--8-*-*-*-c-50-iso8859-1")
("clean 6x8"
"-schumacher-clean-medium-r-normal--8-*-*-*-c-60-iso8859-1")
("clean 8x8"
"-schumacher-clean-medium-r-normal--8-*-*-*-c-80-iso8859-1")
("clean 8x10"
"-schumacher-clean-medium-r-normal--10-*-*-*-c-80-iso8859-1")
("clean 8x14"
"-schumacher-clean-medium-r-normal--14-*-*-*-c-80-iso8859-1")
("clean 8x16"
"-schumacher-clean-medium-r-normal--16-*-*-*-c-80-iso8859-1")
("")
("sony 8x16" "-sony-fixed-medium-r-normal--16-*-*-*-c-80-iso8859-1")
("lucidasanstypewriter-12" "-b&h-lucidatypewriter-medium-r-normal-sans-*-120-*-*-*-*-iso8859-1")
("lucidasanstypewriter-bold-14" "-b&h-lucidatypewriter-bold-r-normal-sans-*-140-*-*-*-*-iso8859-1")
("lucidasanstypewriter-bold-24"
"-b&h-lucidatypewriter-bold-r-normal-sans-*-240-*-*-*-*-iso8859-1")
)
("Courier"
("8" "-adobe-courier-medium-r-normal--*-80-*-*-m-*-iso8859-1")
("10" "-adobe-courier-medium-r-normal--*-100-*-*-m-*-iso8859-1")
("12" "-adobe-courier-medium-r-normal--*-120-*-*-m-*-iso8859-1")
("14" "-adobe-courier-medium-r-normal--*-140-*-*-m-*-iso8859-1")
("18" "-adobe-courier-medium-r-normal--*-180-*-*-m-*-iso8859-1")
("24" "-adobe-courier-medium-r-normal--*-240-*-*-m-*-iso8859-1")
("8 bold" "-adobe-courier-bold-r-normal--*-80-*-*-m-*-iso8859-1")
("10 bold" "-adobe-courier-bold-r-normal--*-100-*-*-m-*-iso8859-1")
("12 bold" "-adobe-courier-bold-r-normal--*-120-*-*-m-*-iso8859-1")
("14 bold" "-adobe-courier-bold-r-normal--*-140-*-*-m-*-iso8859-1")
("18 bold" "-adobe-courier-bold-r-normal--*-180-*-*-m-*-iso8859-1")
("24 bold" "-adobe-courier-bold-r-normal--*-240-*-*-m-*-iso8859-1")
("8 slant" "-adobe-courier-medium-o-normal--*-80-*-*-m-*-iso8859-1")
("10 slant" "-adobe-courier-medium-o-normal--*-100-*-*-m-*-iso8859-1")
("12 slant" "-adobe-courier-medium-o-normal--*-120-*-*-m-*-iso8859-1")
("14 slant" "-adobe-courier-medium-o-normal--*-140-*-*-m-*-iso8859-1")
("18 slant" "-adobe-courier-medium-o-normal--*-180-*-*-m-*-iso8859-1")
("24 slant" "-adobe-courier-medium-o-normal--*-240-*-*-m-*-iso8859-1")
("8 bold slant" "-adobe-courier-bold-o-normal--*-80-*-*-m-*-iso8859-1")
("10 bold slant" "-adobe-courier-bold-o-normal--*-100-*-*-m-*-iso8859-1")
("12 bold slant" "-adobe-courier-bold-o-normal--*-120-*-*-m-*-iso8859-1")
("14 bold slant" "-adobe-courier-bold-o-normal--*-140-*-*-m-*-iso8859-1")
("18 bold slant" "-adobe-courier-bold-o-normal--*-180-*-*-m-*-iso8859-1")
("24 bold slant" "-adobe-courier-bold-o-normal--*-240-*-*-m-*-iso8859-1"))
)
"X fonts suitable for use in Emacs.")
(defun mouse-set-font (&rest fonts)
"Select an Emacs font from a list of known good fonts and fontsets."
(interactive
(progn (unless (display-multi-font-p)
(error "Cannot change fonts on this display"))
(x-popup-menu
(if (listp last-nonmenu-event)
last-nonmenu-event
(list '(0 0) (selected-window)))
(append x-fixed-font-alist (list (generate-fontset-menu))))))
(if fonts
(let (font)
(while fonts
(condition-case nil
(progn
(set-default-font (car fonts))
(setq font (car fonts))
(setq fonts nil))
(error
(setq fonts (cdr fonts)))))
(if (null font)
(error "Font not found")))))
(define-key global-map [down-mouse-1] 'mouse-drag-region)
(global-set-key [mouse-1] 'mouse-set-point)
(global-set-key [drag-mouse-1] 'mouse-set-region)
(global-set-key [double-mouse-1] 'mouse-set-point)
(global-set-key [triple-mouse-1] 'mouse-set-point)
(global-set-key [left-fringe mouse-1] 'mouse-set-point)
(global-set-key [right-fringe mouse-1] 'mouse-set-point)
(global-set-key [mouse-2] 'mouse-yank-at-click)
(global-set-key [right-fringe mouse-2] 'mouse-yank-at-click)
(global-set-key [left-fringe mouse-2] 'mouse-yank-at-click)
(global-set-key [mouse-3] 'mouse-save-then-kill)
(global-set-key [right-fringe mouse-3] 'mouse-save-then-kill)
(global-set-key [left-fringe mouse-3] 'mouse-save-then-kill)
(global-set-key [C-down-mouse-1] 'mouse-buffer-menu)
(if (not (eq system-type 'ms-dos))
(global-set-key [S-down-mouse-1] 'mouse-set-font))
(global-set-key [C-down-mouse-3] 'mouse-popup-menubar-stuff)
(global-set-key [mode-line mouse-1] 'mouse-select-window)
(global-set-key [mode-line drag-mouse-1] 'mouse-select-window)
(global-set-key [mode-line down-mouse-1] 'mouse-drag-mode-line)
(global-set-key [header-line down-mouse-1] 'mouse-drag-header-line)
(global-set-key [header-line mouse-1] 'mouse-select-window)
(global-set-key [mode-line mouse-2] 'mouse-delete-other-windows)
(global-set-key [mode-line mouse-3] 'mouse-delete-window)
(global-set-key [mode-line C-mouse-2] 'mouse-split-window-horizontally)
(global-set-key [vertical-scroll-bar C-mouse-2] 'mouse-split-window-vertically)
(global-set-key [vertical-line C-mouse-2] 'mouse-split-window-vertically)
(global-set-key [vertical-line down-mouse-1] 'mouse-drag-vertical-line)
(global-set-key [vertical-line mouse-1] 'mouse-select-window)
(provide 'mouse)
(defalias 'mldrag-drag-mode-line 'mouse-drag-mode-line)
(defalias 'mldrag-drag-vertical-line 'mouse-drag-vertical-line)
(make-obsolete 'mldrag-drag-mode-line 'mouse-drag-mode-line "21.1")
(make-obsolete 'mldrag-drag-vertical-line 'mouse-drag-vertical-line "21.1")
(provide 'mldrag)