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Rationalisation of the system of frontend handles. Most modular bits

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of PuTTY (terminal, backend, logctx etc) take a `void *' handle
passed to them from the frontend, and used as a context for all
their callbacks. Most of these point at the frontend structure
itself (on platforms where this is meaningful), except that the
handle passed to the backend has always pointed at the terminal
because from_backend() was implemented in terminal.c. This has
finally bitten Unix PuTTY, because both backend and logctx have
been passing their respective and very different frontend handles to
logevent(), so I've fixed it.
from_backend() is now a function supplied by the _frontend_ itself,
in all cases, and the frontend handle passed to backends must be the
same as that passed to everything else. What was from_backend() in
terminal.c is now called term_data(), and the typical implementation
of from_backend() in a GUI frontend will just extract the terminal
handle from the frontend structure and delegate to that.
This appears to work on Unix and Windows, but has most likely broken
the Mac build.

[originally from svn r3100]
This commit is contained in:
Simon Tatham
2003-04-11 18:36:27 +00:00
parent 8e3c37d309
commit d93f7113d1
5 changed files with 29 additions and 29 deletions
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29
unix/pterm.c
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@ -93,8 +93,7 @@ char *x_get_default(const char *key)
void connection_fatal(void *frontend, char *p, ...)
{
Terminal *term = (Terminal *)frontend;
struct gui_data *inst = (struct gui_data *)term->frontend;
struct gui_data *inst = (struct gui_data *)frontend;
va_list ap;
char *msg;
@ -164,10 +163,15 @@ int askappend(void *frontend, Filename filename)
return 2;
}
int from_backend(void *frontend, int is_stderr, const char *data, int len)
{
struct gui_data *inst = (struct gui_data *)frontend;
return term_data(inst->term, is_stderr, data, len);
}
void logevent(void *frontend, char *string)
{
Terminal *term = (Terminal *)frontend;
struct gui_data *inst = (struct gui_data *)term->frontend;
struct gui_data *inst = (struct gui_data *)frontend;
log_eventlog(inst->logctx, string);
@ -212,8 +216,7 @@ static Mouse_Button translate_button(Mouse_Button button)
*/
void *get_window(void *frontend)
{
Terminal *term = (Terminal *)frontend;
struct gui_data *inst = (struct gui_data *)term->frontend;
struct gui_data *inst = (struct gui_data *)frontend;
return inst->window;
}
@ -351,7 +354,7 @@ gint delete_window(GtkWidget *widget, GdkEvent *event, gpointer data)
{
struct gui_data *inst = (struct gui_data *)data;
if (inst->cfg.warn_on_close) {
if (!reallyclose(inst->term))
if (!reallyclose(inst))
return TRUE;
}
return FALSE;
@ -1981,8 +1984,7 @@ char *get_x_display(void *frontend)
long get_windowid(void *frontend)
{
Terminal *term = (Terminal *)frontend;
struct gui_data *inst = (struct gui_data *)(term->frontend);
struct gui_data *inst = (struct gui_data *)frontend;
return (long)GDK_WINDOW_XWINDOW(inst->area->window);
}
@ -2508,8 +2510,6 @@ void change_settings_menuitem(GtkMenuItem *item, gpointer data)
oldcfg.window_border != cfg2.window_border || need_size) {
set_geom_hints(inst);
request_resize(inst, cfg2.width, cfg2.height);
//term_size(inst->term, cfg2.height, cfg2.width, cfg2.savelines);
// where TF is our configure event going?!
}
term_invalidate(inst->term);
@ -2519,8 +2519,7 @@ void change_settings_menuitem(GtkMenuItem *item, gpointer data)
void update_specials_menu(void *frontend)
{
Terminal *term = (Terminal *)frontend;
struct gui_data *inst = (struct gui_data *)term->frontend;
struct gui_data *inst = (struct gui_data *)frontend;
const struct telnet_special *specials;
@ -2737,7 +2736,7 @@ int pt_main(int argc, char **argv)
{
char *realhost, *error;
error = inst->back->init((void *)inst->term, &inst->backhandle,
error = inst->back->init((void *)inst, &inst->backhandle,
&inst->cfg, inst->cfg.host, inst->cfg.port,
&realhost, inst->cfg.tcp_nodelay);
@ -2759,7 +2758,7 @@ int pt_main(int argc, char **argv)
}
}
inst->back->provide_logctx(inst->backhandle, inst->logctx);
update_specials_menu(inst->term);
update_specials_menu(inst);
term_provide_resize_fn(inst->term, inst->back->size, inst->backhandle);