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xmenu.c
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1993-07-23
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/* X Communication module for terminals which understand the X protocol.
Copyright (C) 1986, 1988, 1993 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs 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 2, or (at your option)
any later version.
GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* X pop-up deck-of-cards menu facility for gnuemacs.
*
* Written by Jon Arnold and Roman Budzianowski
* Mods and rewrite by Robert Krawitz
*
*/
#ifdef XDEBUG
#include <stdio.h>
#endif
/* On 4.3 this loses if it comes after xterm.h. */
#include <signal.h>
#include "config.h"
#include "lisp.h"
#include "frame.h"
#include "window.h"
#include "keyboard.h"
#include "blockinput.h"
/* This may include sys/types.h, and that somehow loses
if this is not done before the other system files. */
#include "xterm.h"
/* Load sys/types.h if not already loaded.
In some systems loading it twice is suicidal. */
#ifndef makedev
#include <sys/types.h>
#endif
#include "dispextern.h"
#ifdef HAVE_X11
#include "../oldXMenu/XMenu.h"
#else
#include <X/XMenu.h>
#endif
#define min(x,y) (((x) < (y)) ? (x) : (y))
#define max(x,y) (((x) > (y)) ? (x) : (y))
#define NUL 0
#ifndef TRUE
#define TRUE 1
#define FALSE 0
#endif /* TRUE */
#ifdef HAVE_X11
extern Display *x_current_display;
#else
#define ButtonReleaseMask ButtonReleased
#endif /* not HAVE_X11 */
extern Lisp_Object Qmenu_enable;
Lisp_Object xmenu_show ();
extern int x_error_handler ();
/*************************************************************/
#if 0
/* Ignoring the args is easiest. */
xmenu_quit ()
{
error ("Unknown XMenu error");
}
#endif
DEFUN ("x-popup-menu",Fx_popup_menu, Sx_popup_menu, 1, 2, 0,
"Pop up a deck-of-cards menu and return user's selection.\n\
POSITION is a position specification. This is either a mouse button event\n\
or a list ((XOFFSET YOFFSET) WINDOW)\n\
where XOFFSET and YOFFSET are positions in characters from the top left\n\
corner of WINDOW's frame. (WINDOW may be a frame object instead of a window.)\n\
This controls the position of the center of the first line\n\
in the first pane of the menu, not the top left of the menu as a whole.\n\
\n\
MENU is a specifier for a menu. For the simplest case, MENU is a keymap.\n\
The menu items come from key bindings that have a menu string as well as\n\
a definition; actually, the \"definition\" in such a key binding looks like\n\
\(STRING . REAL-DEFINITION). To give the menu a title, put a string into\n\
the keymap as a top-level element.\n\n\
You can also use a list of keymaps as MENU.\n\
Then each keymap makes a separate pane.\n\
When MENU is a keymap or a list of keymaps, the return value\n\
is a list of events.\n\n\
Alternatively, you can specify a menu of multiple panes\n\
with a list of the form (TITLE PANE1 PANE2...),\n\
where each pane is a list of form (TITLE ITEM1 ITEM2...).\n\
Each ITEM is normally a cons cell (STRING . VALUE);\n\
but a string can appear as an item--that makes a nonselectable line\n\
in the menu.\n\
With this form of menu, the return value is VALUE from the chosen item.")
(position, menu)
Lisp_Object position, menu;
{
int number_of_panes;
Lisp_Object XMenu_return, keymap, tem;
int XMenu_xpos, XMenu_ypos;
char **menus;
char ***names;
int **enables;
Lisp_Object **obj_list;
Lisp_Object *prefixes;
int *items;
char *title;
char *error_name;
Lisp_Object ltitle, selection;
int i, j;
FRAME_PTR f;
Lisp_Object x, y, window;
/* Decode the first argument: find the window and the coordinates. */
tem = Fcar (position);
if (XTYPE (tem) == Lisp_Cons)
{
window = Fcar (Fcdr (position));
x = Fcar (tem);
y = Fcar (Fcdr (tem));
}
else
{
tem = Fcar (Fcdr (position)); /* EVENT_START (position) */
window = Fcar (tem); /* POSN_WINDOW (tem) */
tem = Fcar (Fcdr (Fcdr (tem))); /* POSN_WINDOW_POSN (tem) */
x = Fcar (tem);
y = Fcdr (tem);
}
CHECK_NUMBER (x, 0);
CHECK_NUMBER (y, 0);
if (XTYPE (window) == Lisp_Frame)
{
f = XFRAME (window);
XMenu_xpos = 0;
XMenu_ypos = 0;
}
else if (XTYPE (window) == Lisp_Window)
{
CHECK_LIVE_WINDOW (window, 0);
f = XFRAME (WINDOW_FRAME (XWINDOW (window)));
XMenu_xpos = FONT_WIDTH (f->display.x->font) * XWINDOW (window)->left;
XMenu_ypos = FONT_HEIGHT (f->display.x->font) * XWINDOW (window)->top;
}
else
/* ??? Not really clean; should be CHECK_WINDOW_OR_FRAME,
but I don't want to make one now. */
CHECK_WINDOW (window, 0);
XMenu_xpos += FONT_WIDTH (f->display.x->font) * XINT (x);
XMenu_ypos += FONT_HEIGHT (f->display.x->font) * XINT (y);
XMenu_xpos += f->display.x->left_pos;
XMenu_ypos += f->display.x->top_pos;
keymap = Fkeymapp (menu);
tem = Qnil;
if (XTYPE (menu) == Lisp_Cons)
tem = Fkeymapp (Fcar (menu));
if (!NILP (keymap))
{
/* We were given a keymap. Extract menu info from the keymap. */
Lisp_Object prompt;
keymap = get_keymap (menu);
/* Search for a string appearing directly as an element of the keymap.
That string is the title of the menu. */
prompt = map_prompt (keymap);
if (!NILP (prompt))
title = (char *) XSTRING (prompt)->data;
/* Extract the detailed info to make one pane. */
number_of_panes = keymap_panes (&obj_list, &menus, &names, &enables,
&items, &prefixes, &menu, 1);
/* The menu title seems to be ignored,
so put it in the pane title. */
if (menus[0] == 0)
menus[0] = title;
}
else if (!NILP (tem))
{
/* We were given a list of keymaps. */
Lisp_Object prompt;
int nmaps = XFASTINT (Flength (menu));
Lisp_Object *maps
= (Lisp_Object *) alloca (nmaps * sizeof (Lisp_Object));
int i;
title = 0;
/* The first keymap that has a prompt string
supplies the menu title. */
for (tem = menu, i = 0; XTYPE (tem) == Lisp_Cons; tem = Fcdr (tem))
{
maps[i++] = keymap = get_keymap (Fcar (tem));
prompt = map_prompt (keymap);
if (title == 0 && !NILP (prompt))
title = (char *) XSTRING (prompt)->data;
}
/* Extract the detailed info to make one pane. */
number_of_panes = keymap_panes (&obj_list, &menus, &names, &enables,
&items, &prefixes, maps, nmaps);
/* The menu title seems to be ignored,
so put it in the pane title. */
if (menus[0] == 0)
menus[0] = title;
}
else
{
/* We were given an old-fashioned menu. */
ltitle = Fcar (menu);
CHECK_STRING (ltitle, 1);
title = (char *) XSTRING (ltitle)->data;
prefixes = 0;
number_of_panes = list_of_panes (&obj_list, &menus, &names, &enables,
&items, Fcdr (menu));
}
#ifdef XDEBUG
fprintf (stderr, "Panes = %d\n", number_of_panes);
for (i = 0; i < number_of_panes; i++)
{
fprintf (stderr, "Pane %d has lines %d title %s\n",
i, items[i], menus[i]);
for (j = 0; j < items[i]; j++)
fprintf (stderr, " Item %d %s\n", j, names[i][j]);
}
#endif
BLOCK_INPUT;
{
Window root;
int root_x, root_y;
int dummy_int;
unsigned int dummy_uint;
Window dummy_window;
/* Figure out which root window F is on. */
XGetGeometry (x_current_display, FRAME_X_WINDOW (f), &root,
&dummy_int, &dummy_int, &dummy_uint, &dummy_uint,
&dummy_uint, &dummy_uint);
/* Translate the menu co-ordinates within f to menu co-ordinates
on that root window. */
if (! XTranslateCoordinates (x_current_display,
FRAME_X_WINDOW (f), root,
XMenu_xpos, XMenu_ypos, &root_x, &root_y,
&dummy_window))
/* But XGetGeometry said root was the root window of f's screen! */
abort ();
selection = xmenu_show (root, XMenu_xpos, XMenu_ypos, names, enables,
menus, prefixes, items, number_of_panes, obj_list,
title, &error_name);
}
UNBLOCK_INPUT;
/* fprintf (stderr, "selection = %x\n", selection); */
if (selection != NUL)
{ /* selected something */
XMenu_return = selection;
}
else
{ /* nothing selected */
XMenu_return = Qnil;
}
/* now free up the strings */
for (i = 0; i < number_of_panes; i++)
{
xfree (names[i]);
xfree (enables[i]);
xfree (obj_list[i]);
}
xfree (menus);
xfree (obj_list);
xfree (names);
xfree (enables);
xfree (items);
/* free (title); */
if (error_name) error (error_name);
return XMenu_return;
}
struct indices {
int pane;
int line;
};
Lisp_Object
xmenu_show (parent, startx, starty, line_list, enable_list, pane_list,
prefixes, line_cnt, pane_cnt, item_list, title, error)
Window parent;
int startx, starty; /* upper left corner position BROKEN */
char **line_list[]; /* list of strings for items */
int *enable_list[]; /* list of strings for items */
char *pane_list[]; /* list of pane titles */
Lisp_Object *prefixes; /* Prefix key for each pane */
char *title;
int pane_cnt; /* total number of panes */
Lisp_Object *item_list[]; /* All items */
int line_cnt[]; /* Lines in each pane */
char **error; /* Error returned */
{
XMenu *GXMenu;
int last, panes, selidx, lpane, status;
int lines, sofar;
Lisp_Object entry;
/* struct indices *datap, *datap_save; */
char *datap;
int ulx, uly, width, height;
int dispwidth, dispheight;
*error = 0;
if (pane_cnt == 0)
return 0;
BLOCK_INPUT;
*error = (char *) 0; /* Initialize error pointer to null */
GXMenu = XMenuCreate (XDISPLAY parent, "emacs");
if (GXMenu == NUL)
{
*error = "Can't create menu";
UNBLOCK_INPUT;
return (0);
}
for (panes = 0, lines = 0; panes < pane_cnt;
lines += line_cnt[panes], panes++)
;
/* datap = (struct indices *) xmalloc (lines * sizeof (struct indices)); */
/* datap = (char *) xmalloc (lines * sizeof (char));
datap_save = datap;*/
for (panes = 0, sofar = 0; panes < pane_cnt;
sofar += line_cnt[panes], panes++)
{
/* create all the necessary panes */
lpane = XMenuAddPane (XDISPLAY GXMenu, pane_list[panes], TRUE);
if (lpane == XM_FAILURE)
{
XMenuDestroy (XDISPLAY GXMenu);
*error = "Can't create pane";
UNBLOCK_INPUT;
return (0);
}
for (selidx = 0; selidx < line_cnt[panes]; selidx++)
{
/* add the selection stuff to the menus */
/* datap[selidx+sofar].pane = panes;
datap[selidx+sofar].line = selidx; */
if (XMenuAddSelection (XDISPLAY GXMenu, lpane, 0,
line_list[panes][selidx],
enable_list[panes][selidx])
== XM_FAILURE)
{
XMenuDestroy (XDISPLAY GXMenu);
/* free (datap); */
*error = "Can't add selection to menu";
/* error ("Can't add selection to menu"); */
UNBLOCK_INPUT;
return (0);
}
}
}
/* all set and ready to fly */
XMenuRecompute (XDISPLAY GXMenu);
dispwidth = DisplayWidth (x_current_display, XDefaultScreen (x_current_display));
dispheight = DisplayHeight (x_current_display, XDefaultScreen (x_current_display));
startx = min (startx, dispwidth);
starty = min (starty, dispheight);
startx = max (startx, 1);
starty = max (starty, 1);
XMenuLocate (XDISPLAY GXMenu, 0, 0, startx, starty,
&ulx, &uly, &width, &height);
if (ulx+width > dispwidth)
{
startx -= (ulx + width) - dispwidth;
ulx = dispwidth - width;
}
if (uly+height > dispheight)
{
starty -= (uly + height) - dispheight;
uly = dispheight - height;
}
if (ulx < 0) startx -= ulx;
if (uly < 0) starty -= uly;
XMenuSetFreeze (GXMenu, TRUE);
panes = selidx = 0;
status = XMenuActivate (XDISPLAY GXMenu, &panes, &selidx,
startx, starty, ButtonReleaseMask, &datap);
switch (status)
{
case XM_SUCCESS:
#ifdef XDEBUG
fprintf (stderr, "pane= %d line = %d\n", panes, selidx);
#endif
entry = item_list[panes][selidx];
if (prefixes != 0)
{
entry = Fcons (entry, Qnil);
if (!NILP (prefixes[panes]))
entry = Fcons (prefixes[panes], entry);
}
break;
case XM_FAILURE:
/* free (datap_save); */
XMenuDestroy (XDISPLAY GXMenu);
*error = "Can't activate menu";
/* error ("Can't activate menu"); */
case XM_IA_SELECT:
case XM_NO_SELECT:
entry = Qnil;
break;
}
XMenuDestroy (XDISPLAY GXMenu);
UNBLOCK_INPUT;
/* free (datap_save);*/
return (entry);
}
syms_of_xmenu ()
{
defsubr (&Sx_popup_menu);
}
/* Construct the vectors that describe a menu
and store them in *VECTOR, *PANES, *NAMES, *ENABLES and *ITEMS.
Each of those four values is a vector indexed by pane number.
Return the number of panes.
KEYMAPS is a vector of keymaps. NMAPS gives the length of KEYMAPS. */
int
keymap_panes (vector, panes, names, enables, items, prefixes, keymaps, nmaps)
Lisp_Object ***vector; /* RETURN all menu objects */
char ***panes; /* RETURN pane names */
char ****names; /* RETURN all line names */
int ***enables; /* RETURN enable-flags of lines */
int **items; /* RETURN number of items per pane */
Lisp_Object **prefixes; /* RETURN vector of prefix keys, per pane */
Lisp_Object *keymaps;
int nmaps;
{
/* Number of panes we have made. */
int p = 0;
/* Number of panes we have space for. */
int npanes_allocated = nmaps;
int mapno;
if (npanes_allocated < 4)
npanes_allocated = 4;
/* Make space for an estimated number of panes. */
*vector = (Lisp_Object **) xmalloc (npanes_allocated * sizeof (Lisp_Object *));
*panes = (char **) xmalloc (npanes_allocated * sizeof (char *));
*items = (int *) xmalloc (npanes_allocated * sizeof (int));
*names = (char ***) xmalloc (npanes_allocated * sizeof (char **));
*enables = (int **) xmalloc (npanes_allocated * sizeof (int *));
*prefixes = (Lisp_Object *) xmalloc (npanes_allocated * sizeof (Lisp_Object));
/* Loop over the given keymaps, making a pane for each map.
But don't make a pane that is empty--ignore that map instead.
P is the number of panes we have made so far. */
for (mapno = 0; mapno < nmaps; mapno++)
single_keymap_panes (keymaps[mapno], panes, vector, names, enables, items,
prefixes, &p, &npanes_allocated, "");
/* Return the number of panes. */
return p;
}
/* This is a recursive subroutine of the previous function.
It handles one keymap, KEYMAP.
The other arguments are passed along
or point to local variables of the previous function. */
single_keymap_panes (keymap, panes, vector, names, enables, items, prefixes,
p_ptr, npanes_allocated_ptr, pane_name)
Lisp_Object keymap;
Lisp_Object ***vector; /* RETURN all menu objects */
char ***panes; /* RETURN pane names */
char ****names; /* RETURN all line names */
int ***enables; /* RETURN enable flags of lines */
int **items; /* RETURN number of items per pane */
Lisp_Object **prefixes; /* RETURN vector of prefix keys, per pane */
int *p_ptr;
int *npanes_allocated_ptr;
char *pane_name;
{
int i;
Lisp_Object pending_maps;
Lisp_Object tail, item, item1, item2, table;
pending_maps = Qnil;
/* Make sure we have room for another pane. */
if (*p_ptr == *npanes_allocated_ptr)
{
*npanes_allocated_ptr *= 2;
*vector
= (Lisp_Object **) xrealloc (*vector,
*npanes_allocated_ptr * sizeof (Lisp_Object *));
*panes
= (char **) xrealloc (*panes,
*npanes_allocated_ptr * sizeof (char *));
*items
= (int *) xrealloc (*items,
*npanes_allocated_ptr * sizeof (int));
*prefixes
= (Lisp_Object *) xrealloc (*prefixes,
(*npanes_allocated_ptr
* sizeof (Lisp_Object)));
*names
= (char ***) xrealloc (*names,
*npanes_allocated_ptr * sizeof (char **));
*enables
= (int **) xrealloc (*enables,
*npanes_allocated_ptr * sizeof (int *));
}
/* When a menu comes from keymaps, don't give names to the panes. */
(*panes)[*p_ptr] = pane_name;
/* Normally put nil as pane's prefix key.
Caller will override this if appropriate. */
(*prefixes)[*p_ptr] = Qnil;
/* Get the length of the list level of the keymap. */
i = XFASTINT (Flength (keymap));
/* Add in lengths of any arrays. */
for (tail = keymap; XTYPE (tail) == Lisp_Cons; tail = XCONS (tail)->cdr)
if (XTYPE (XCONS (tail)->car) == Lisp_Vector)
i += XVECTOR (XCONS (tail)->car)->size;
/* Create vectors for the names and values of the items in the pane.
I is an upper bound for the number of items. */
(*vector)[*p_ptr] = (Lisp_Object *) xmalloc (i * sizeof (Lisp_Object));
(*names)[*p_ptr] = (char **) xmalloc (i * sizeof (char *));
(*enables)[*p_ptr] = (int *) xmalloc (i * sizeof (int));
/* I is now the index of the next unused slots. */
i = 0;
for (tail = keymap; XTYPE (tail) == Lisp_Cons; tail = XCONS (tail)->cdr)
{
/* Look at each key binding, and if it has a menu string,
make a menu item from it. */
item = XCONS (tail)->car;
if (XTYPE (item) == Lisp_Cons)
{
item1 = XCONS (item)->cdr;
if (XTYPE (item1) == Lisp_Cons)
{
item2 = XCONS (item1)->car;
if (XTYPE (item2) == Lisp_String)
{
Lisp_Object def, tem;
Lisp_Object enabled;
def = Fcdr (item1);
enabled = Qt;
if (XTYPE (def) == Lisp_Symbol)
{
/* No property, or nil, means enable.
Otherwise, enable if value is not nil. */
tem = Fget (def, Qmenu_enable);
if (!NILP (tem))
enabled = Feval (tem);
}
tem = Fkeymapp (def);
if (XSTRING (item2)->data[0] == '@' && !NILP (tem))
pending_maps = Fcons (Fcons (def, Fcons (item2, XCONS (item)->car)),
pending_maps);
else
{
(*names)[*p_ptr][i] = (char *) XSTRING (item2)->data;
/* The menu item "value" is the key bound here. */
(*vector)[*p_ptr][i] = XCONS (item)->car;
(*enables)[*p_ptr][i]
= (NILP (def) ? -1 : !NILP (enabled) ? 1 : 0);
i++;
}
}
}
}
else if (XTYPE (item) == Lisp_Vector)
{
/* Loop over the char values represented in the vector. */
int len = XVECTOR (item)->size;
int c;
for (c = 0; c < len; c++)
{
Lisp_Object character;
XFASTINT (character) = c;
item1 = XVECTOR (item)->contents[c];
if (XTYPE (item1) == Lisp_Cons)
{
item2 = XCONS (item1)->car;
if (XTYPE (item2) == Lisp_String)
{
Lisp_Object tem;
Lisp_Object def;
Lisp_Object enabled;
def = Fcdr (item1);
enabled = Qt;
if (XTYPE (def) == Lisp_Symbol)
{
tem = Fget (def, Qmenu_enable);
/* No property, or nil, means enable.
Otherwise, enable if value is not nil. */
if (!NILP (tem))
enabled = Feval (tem);
}
tem = Fkeymapp (def);
if (XSTRING (item2)->data[0] == '@' && !NILP (tem))
pending_maps = Fcons (Fcons (def, Fcons (item2, character)),
pending_maps);
else
{
(*names)[*p_ptr][i] = (char *) XSTRING (item2)->data;
/* The menu item "value" is the key bound here. */
(*vector)[*p_ptr][i] = character;
(*enables)[*p_ptr][i]
= (NILP (def) ? -1 : !NILP (enabled) ? 1 : 0);
i++;
}
}
}
}
}
}
/* Record the number of items in the pane. */
(*items)[*p_ptr] = i;
/* If we just made an empty pane, get rid of it. */
if (i == 0)
{
xfree ((*vector)[*p_ptr]);
xfree ((*names)[*p_ptr]);
xfree ((*enables)[*p_ptr]);
}
/* Otherwise, advance past it. */
else
(*p_ptr)++;
/* Process now any submenus which want to be panes at this level. */
while (!NILP (pending_maps))
{
Lisp_Object elt, eltcdr;
int panenum = *p_ptr;
elt = Fcar (pending_maps);
eltcdr = XCONS (elt)->cdr;
single_keymap_panes (Fcar (elt), panes, vector, names, enables, items,
prefixes, p_ptr, npanes_allocated_ptr,
/* Add 1 to discard the @. */
(char *) XSTRING (XCONS (eltcdr)->car)->data + 1);
(*prefixes)[panenum] = XCONS (eltcdr)->cdr;
pending_maps = Fcdr (pending_maps);
}
}
/* Construct the vectors that describe a menu
and store them in *VECTOR, *PANES, *NAMES, *ENABLES and *ITEMS.
Each of those four values is a vector indexed by pane number.
Return the number of panes.
MENU is the argument that was given to Fx_popup_menu. */
int
list_of_panes (vector, panes, names, enables, items, menu)
Lisp_Object ***vector; /* RETURN all menu objects */
char ***panes; /* RETURN pane names */
char ****names; /* RETURN all line names */
int ***enables; /* RETURN enable flags of lines */
int **items; /* RETURN number of items per pane */
Lisp_Object menu;
{
Lisp_Object tail, item, item1;
int i;
if (XTYPE (menu) != Lisp_Cons) menu = wrong_type_argument (Qlistp, menu);
i = XFASTINT (Flength (menu));
*vector = (Lisp_Object **) xmalloc (i * sizeof (Lisp_Object *));
*panes = (char **) xmalloc (i * sizeof (char *));
*items = (int *) xmalloc (i * sizeof (int));
*names = (char ***) xmalloc (i * sizeof (char **));
*enables = (int **) xmalloc (i * sizeof (int *));
for (i = 0, tail = menu; !NILP (tail); tail = Fcdr (tail), i++)
{
item = Fcdr (Fcar (tail));
if (XTYPE (item) != Lisp_Cons) (void) wrong_type_argument (Qlistp, item);
#ifdef XDEBUG
fprintf (stderr, "list_of_panes check tail, i=%d\n", i);
#endif
item1 = Fcar (Fcar (tail));
CHECK_STRING (item1, 1);
#ifdef XDEBUG
fprintf (stderr, "list_of_panes check pane, i=%d%s\n", i,
XSTRING (item1)->data);
#endif
(*panes)[i] = (char *) XSTRING (item1)->data;
(*items)[i] = list_of_items ((*vector)+i, (*names)+i, (*enables)+i, item);
/* (*panes)[i] = (char *) xmalloc ((XSTRING (item1)->size)+1);
bcopy (XSTRING (item1)->data, (*panes)[i], XSTRING (item1)->size + 1)
; */
}
return i;
}
/* Construct the lists of values and names for a single pane, from the
alist PANE. Put them in *VECTOR and *NAMES. Put the enable flags
int *ENABLES. Return the number of items. */
int
list_of_items (vector, names, enables, pane)
Lisp_Object **vector; /* RETURN menu "objects" */
char ***names; /* RETURN line names */
int **enables; /* RETURN enable flags of lines */
Lisp_Object pane;
{
Lisp_Object tail, item, item1;
int i;
if (XTYPE (pane) != Lisp_Cons) pane = wrong_type_argument (Qlistp, pane);
i = XFASTINT (Flength (pane));
*vector = (Lisp_Object *) xmalloc (i * sizeof (Lisp_Object));
*names = (char **) xmalloc (i * sizeof (char *));
*enables = (int *) xmalloc (i * sizeof (int));
for (i = 0, tail = pane; !NILP (tail); tail = Fcdr (tail), i++)
{
item = Fcar (tail);
if (STRINGP (item))
{
(*vector)[i] = Qnil;
(*names)[i] = (char *) XSTRING (item)->data;
(*enables)[i] = -1;
}
else
{
CHECK_CONS (item, 0);
(*vector)[i] = Fcdr (item);
item1 = Fcar (item);
CHECK_STRING (item1, 1);
(*names)[i] = (char *) XSTRING (item1)->data;
(*enables)[i] = 1;
}
}
return i;
}