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Add `kill-xwidget'

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* doc/lispref/display.texi (Xwidgets): Document 'kill-xwidget'.
* src/xwidget.c (kill_xwidget, Fkill_xwidget): New function.
(syms_of_xwidget): Define new subr.
(kill_buffer_xwidgets): Use `kill_xwidget' instead.
This commit is contained in:
Po Lu 2021-11-14 13:02:41 +08:00
parent 06632fbaf8
commit 609bc1d33a
2 changed files with 67 additions and 28 deletions
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14
doc/lispref/display.texi
View file

@ -6806,10 +6806,11 @@ widget that the newly created widget should share settings and
subprocesses with.
The xwidget that is returned will be killed alongside its buffer
(@pxref{Killing Buffers}). Once it is killed, the xwidget may
continue to exist as a Lisp object and act as a @code{display}
property until all references to it are gone, but most actions that
can be performed on live xwidgets will no longer be available.
(@pxref{Killing Buffers}). You can also kill it using
@code{xwidget-kill}. Once it is killed, the xwidget may continue to
exist as a Lisp object and act as a @code{display} property until all
references to it are gone, but most actions that can be performed on
live xwidgets will no longer be available.
@end defun
@defun xwidgetp object
@ -6822,6 +6823,11 @@ This function returns @code{t} if @var{object} is an xwidget that
hasn't been killed, and @code{nil} otherwise.
@end defun
@defun kill-xwidget xwidget
This function kills @var{xwidget}, by removing it from its buffer and
releasing window system resources it holds.
@end defun
@defun xwidget-plist xwidget
This function returns the property list of @var{xwidget}.
@end defun

81
src/xwidget.c
View file

@ -76,6 +76,8 @@ allocate_xwidget_view (void)
static struct xwidget_view *xwidget_view_lookup (struct xwidget *,
struct window *);
static void kill_xwidget (struct xwidget *);
#ifdef USE_GTK
static void webkit_view_load_changed_cb (WebKitWebView *,
WebKitLoadEvent,
@ -2386,6 +2388,25 @@ using `xwidget-webkit-search'. */)
return Qnil;
}
DEFUN ("kill-xwidget", Fkill_xwidget, Skill_xwidget,
1, 1, 0,
doc: /* Kill the specified XWIDGET.
This releases all window system resources associated with XWIDGET,
removes it from `xwidget-list', and detaches it from its buffer. */)
(Lisp_Object xwidget)
{
struct xwidget *xw;
CHECK_LIVE_XWIDGET (xwidget);
xw = XXWIDGET (xwidget);
block_input ();
kill_xwidget (xw);
unblock_input ();
return Qnil;
}
#ifdef USE_GTK
DEFUN ("xwidget-webkit-load-html", Fxwidget_webkit_load_html,
Sxwidget_webkit_load_html, 2, 3, 0,
@ -2468,6 +2489,7 @@ syms_of_xwidget (void)
#ifdef USE_GTK
defsubr (&Sxwidget_webkit_load_html);
#endif
defsubr (&Skill_xwidget);
DEFSYM (QCxwidget, ":xwidget");
DEFSYM (QCtitle, ":title");
@ -2708,6 +2730,40 @@ kill_frame_xwidget_views (struct frame *f)
}
#endif
static void
kill_xwidget (struct xwidget *xw)
{
#ifdef USE_GTK
xw->buffer = Qnil;
if (xw->widget_osr && xw->widgetwindow_osr)
{
gtk_widget_destroy (xw->widget_osr);
gtk_widget_destroy (xw->widgetwindow_osr);
}
if (xw->find_text)
xfree (xw->find_text);
if (!NILP (xw->script_callbacks))
{
for (ptrdiff_t idx = 0; idx < ASIZE (xw->script_callbacks); idx++)
{
Lisp_Object cb = AREF (xw->script_callbacks, idx);
if (!NILP (cb))
xfree (xmint_pointer (XCAR (cb)));
ASET (xw->script_callbacks, idx, Qnil);
}
}
xw->widget_osr = NULL;
xw->widgetwindow_osr = NULL;
xw->find_text = NULL;
#elif defined NS_IMPL_COCOA
nsxwidget_kill (xw);
#endif
}
/* Kill all xwidget in BUFFER. */
void
kill_buffer_xwidgets (Lisp_Object buffer)
@ -2721,31 +2777,8 @@ kill_buffer_xwidgets (Lisp_Object buffer)
{
CHECK_LIVE_XWIDGET (xwidget);
struct xwidget *xw = XXWIDGET (xwidget);
xw->buffer = Qnil;
#ifdef USE_GTK
if (xw->widget_osr && xw->widgetwindow_osr)
{
gtk_widget_destroy (xw->widget_osr);
gtk_widget_destroy (xw->widgetwindow_osr);
}
if (xw->find_text)
xfree (xw->find_text);
if (!NILP (xw->script_callbacks))
for (ptrdiff_t idx = 0; idx < ASIZE (xw->script_callbacks); idx++)
{
Lisp_Object cb = AREF (xw->script_callbacks, idx);
if (!NILP (cb))
xfree (xmint_pointer (XCAR (cb)));
ASET (xw->script_callbacks, idx, Qnil);
}
xw->widget_osr = NULL;
xw->widgetwindow_osr = NULL;
xw->find_text = NULL;
#elif defined NS_IMPL_COCOA
nsxwidget_kill (xw);
#endif
kill_xwidget (xw);
}
}
}