annotate src/widget.c @ 613:023b83f4e54b

[xemacs-hg @ 2001-06-10 10:42:16 by ben] ------ signal-code changes ------ data.c, device-tty.c, emacs.c, floatfns.c, linuxplay.c, nas.c, process-unix.c, signal.c, sunplay.c, sysdep.c, syssignal.h: use EMACS_SIGNAL everywhere instead of playing preprocessing games with signal(). s\windowsnt.h, s\mingw32.h, syssignal.h: Remove mswindows signal code from s+m headers and move to syssignal.h as one of the five ways of signal handling, instead of playing preprocessing games. fileio.c, sysdep.c: Rename sys_do_signal to qxe_reliable_signal. signal.c, process-unix.c, profile.c: Create set_timeout_signal(); use instead of just EMACS_SIGNAL to establish a signal handler on a timeout signal; this does special things under Cygwin. nt.c: Eliminate term_ntproc(), which is blank; used as a SIGABRT handler, which was wrong anyway. nt.c, win32.c: Move signal code from nt.c to win32.c, since Cygwin needs it too when dealing with timeout signals. s\cygwin32.h: Define CYGWIN_BROKEN_SIGNALS. ------ other changes ------ s\mingw32.h: Fix problems with NOT_C_CODE being in the wrong place and excluding defines needed when building Makefile.in.in. filelock.c, mule-canna.c, mule-ccl.c, mule-ccl.h, ralloc.c, unexalpha.c, unexapollo.c, unexcw.c, unexelfsgi.c, unexnt.c, unexsni.c, s\aix3-1.h, s\bsd4-1.h, s\bsd4-2.h, s\bsd4-3.h, s\cxux.h, s\cygwin32.h, s\dgux.h, s\dgux5-4r2.h, s\dgux5-4r3.h, s\dgux5-4r4.h, s\ewsux5r4.h, s\gnu.h, s\hpux.h, s\iris3-5.h, s\iris3-6.h, s\irix3-3.h, s\linux.h, s\mingw32.h, s\newsos5.h, s\nextstep.h, s\ptx.h, s\riscix1-1.h, s\riscix1-2.h, s\rtu.h, s\sco4.h, s\sco5.h, s\template.h, s\ultrix.h, s\umax.h, s\umips.h, s\unipl5-0.h, s\unipl5-2.h, s\usg5-0.h, s\usg5-2-2.h, s\usg5-2.h, s\usg5-3.h, s\usg5-4.h, s\windowsnt.h, s\xenix.h: Rename 'GNU Emacs' to XEmacs in the copyright and comments. nas.c: Stylistic cleanup. Avoid preprocessing games with names such as play_sound_file. ------ signal-code changes ------ data.c, device-tty.c, emacs.c, floatfns.c, linuxplay.c, nas.c, process-unix.c, signal.c, sunplay.c, sysdep.c, syssignal.h: use EMACS_SIGNAL everywhere instead of playing preprocessing games with signal(). s\windowsnt.h, s\mingw32.h, syssignal.h: Remove mswindows signal code from s+m headers and move to syssignal.h as one of the five ways of signal handling, instead of playing preprocessing games. fileio.c, sysdep.c: Rename sys_do_signal to qxe_reliable_signal. signal.c, process-unix.c, profile.c: Create set_timeout_signal(); use instead of just EMACS_SIGNAL to establish a signal handler on a timeout signal; this does special things under Cygwin. nt.c: Eliminate term_ntproc(), which is blank; used as a SIGABRT handler, which was wrong anyway. nt.c, win32.c: Move signal code from nt.c to win32.c, since Cygwin needs it too when dealing with timeout signals. s\cygwin32.h: Define CYGWIN_BROKEN_SIGNALS. ------ other changes ------ s\mingw32.h: Fix problems with NOT_C_CODE being in the wrong place and excluding defines needed when building Makefile.in.in. filelock.c, mule-canna.c, mule-ccl.c, mule-ccl.h, ralloc.c, unexalpha.c, unexapollo.c, unexcw.c, unexelfsgi.c, unexnt.c, unexsni.c, s\aix3-1.h, s\bsd4-1.h, s\bsd4-2.h, s\bsd4-3.h, s\cxux.h, s\cygwin32.h, s\dgux.h, s\dgux5-4r2.h, s\dgux5-4r3.h, s\dgux5-4r4.h, s\ewsux5r4.h, s\gnu.h, s\hpux.h, s\iris3-5.h, s\iris3-6.h, s\irix3-3.h, s\linux.h, s\mingw32.h, s\newsos5.h, s\nextstep.h, s\ptx.h, s\riscix1-1.h, s\riscix1-2.h, s\rtu.h, s\sco4.h, s\sco5.h, s\template.h, s\ultrix.h, s\umax.h, s\umips.h, s\unipl5-0.h, s\unipl5-2.h, s\usg5-0.h, s\usg5-2-2.h, s\usg5-2.h, s\usg5-3.h, s\usg5-4.h, s\windowsnt.h, s\xenix.h: Rename 'GNU Emacs' to XEmacs in the copyright and comments. nas.c: Stylistic cleanup. Avoid preprocessing games with names such as play_sound_file. xemacs-faq.texi: Update sections on Windows and MacOS availability. alist.el, apropos.el, autoload.el, bytecomp.el, cl-compat.el, cl-extra.el, cl-macs.el, cl-seq.el, cl.el, cmdloop.el, cus-edit.el, derived.el, gpm.el, itimer.el, lisp-mode.el, shadow.el, version.el, wid-browse.el: Rename 'GNU Emacs' to XEmacs in the copyright. Fix other references to GNU Emacs that should be XEmacs or just Emacs. files.el: Fix warning. simple.el: transpose-line-up/down will now move the region up or down by a line if active. cvtmail.c, fakemail.c, gnuserv.c, gnuserv.h, gnuslib.c, make-msgfile.c, make-path.c, pop.c, pop.h, profile.c, tcp.c: Rename 'GNU Emacs' to XEmacs in the copyright. Fix comments in similar ways. digest-doc.c, sorted-doc.c: Fix program and author name to reflect XEmacs.
author ben
date Sun, 10 Jun 2001 10:42:39 +0000
parents 183866b06e0b
children 80cd90837ac5
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1 /* Primitives for work of the "widget" library.
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2 Copyright (C) 1997 Free Software Foundation, Inc.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: Not in FSF. */
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22
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23 /* In an ideal world, this file would not have been necessary.
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24 However, elisp function calls being as slow as they are, it turns
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25 out that some functions in the widget library (wid-edit.el) are the
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26 bottleneck of Widget operation. Here is their translation to C,
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27 for the sole reason of efficiency. */
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28
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29 #include <config.h>
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30 #include "lisp.h"
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31 #include "buffer.h"
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32
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33
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34 Lisp_Object Qwidget_type;
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35
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36
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37 DEFUN ("widget-plist-member", Fwidget_plist_member, 2, 2, 0, /*
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38 Like `plist-get', but returns the tail of PLIST whose car is PROP.
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39 */
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40 (plist, prop))
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41 {
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42 while (!NILP (plist) && !EQ (Fcar (plist), prop))
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43 {
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44 /* Check for QUIT, so a circular plist doesn't lock up the
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45 editor. */
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46 QUIT;
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47 plist = Fcdr (Fcdr (plist));
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48 }
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49 return plist;
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50 }
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51
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52 DEFUN ("widget-put", Fwidget_put, 3, 3, 0, /*
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53 In WIDGET set PROPERTY to VALUE.
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54 The value can later be retrieved with `widget-get'.
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55 */
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56 (widget, property, value))
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57 {
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58 CHECK_CONS (widget);
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59 XCDR (widget) = Fplist_put (XCDR (widget), property, value);
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60 return widget;
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61 }
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62
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63 DEFUN ("widget-get", Fwidget_get, 2, 2, 0, /*
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64 In WIDGET, get the value of PROPERTY.
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65 The value could either be specified when the widget was created, or
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66 later with `widget-put'.
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67 */
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68 (widget, property))
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69 {
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70 Lisp_Object value = Qnil;
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71
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72 while (1)
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73 {
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74 Lisp_Object tmp = Fwidget_plist_member (Fcdr (widget), property);
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75 if (!NILP (tmp))
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76 {
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77 value = Fcar (Fcdr (tmp));
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78 break;
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79 }
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80 tmp = Fcar (widget);
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81 if (!NILP (tmp))
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82 {
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83 widget = Fget (tmp, Qwidget_type, Qnil);
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84 continue;
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85 }
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86 break;
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87 }
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88 return value;
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89 }
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90
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91 DEFUN ("widget-apply", Fwidget_apply, 2, MANY, 0, /*
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92 Apply the value of WIDGET's PROPERTY to the widget itself.
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93 ARGS are passed as extra arguments to the function.
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94 */
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95 (int nargs, Lisp_Object *args))
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96 {
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97 /* This function can GC */
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98 Lisp_Object newargs[3];
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99 struct gcpro gcpro1;
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100
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101 newargs[0] = Fwidget_get (args[0], args[1]);
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102 newargs[1] = args[0];
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103 newargs[2] = Flist (nargs - 2, args + 2);
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104 GCPRO1 (newargs[2]);
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105 RETURN_UNGCPRO (Fapply (3, newargs));
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106 }
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107
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108 void
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109 syms_of_widget (void)
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110 {
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111 DEFSYMBOL (Qwidget_type);
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112
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113 DEFSUBR (Fwidget_plist_member);
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114 DEFSUBR (Fwidget_put);
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115 DEFSUBR (Fwidget_get);
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116 DEFSUBR (Fwidget_apply);
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117 }