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gnome-control-center/capplets/windows/gnome-window-properties.c

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2002-05-10 Seth Nickell <snickell@stanford.edu> * .cvsignore: * Makefile.am: * gnome-window-properties.c: (wm_selection_changed), (wm_widget_clear), (wm_widget_new), (wm_widget_add_wm), (response_cb), (state_changed), (restart_label_update), (restart_dialog_raise), (restart_dialog_destroyed), (show_restart_dialog), (hide_restart_dialog), (update_session), (init_session), (update_gui), (init_callback), (restart_finalize), (restart_failure), (show_restart_info), (restart_finish), (restart_callback), (restart), (revert_callback), (cancel_callback), (apply_wm), (create_dialog), (main): * gnome-window-properties.glade: * window-capplet.png: * window-properties.desktop.in: * wm-exec.c: (wm_is_running), (find_gnome_wm_window), (find_wm_window_from_client), (window_has_wm_state), (descendent_has_wm_state), (find_wm_window_from_hunt), (find_wm_window), (start_timeout), (start_do), (kill_timeout), (wm_restart), (wm_guess_current): * wm-list.c: (is_blank), (wm_compare), (wm_free), (wm_check_present), (wm_copy), (wm_list_find), (wm_list_find_exec), (wm_list_find_files), (wm_list_read_dir), (wm_list_init), (wm_list_save), (wm_list_revert), (wm_list_add), (wm_list_delete), (wm_list_set_current), (wm_list_get_current), (wm_list_get_revert), (wm_read_from_xml), (wm_list_read_from_xml), (wm_write_to_xml), (wm_list_write_to_xml), (xml_read_bool), (xml_write_bool): * wm-properties.h:
2002-05-11 04:28:20 +00:00
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
/* Copyright (C) 1998-1999 Redhat Software Inc.
* Code available under the Gnu GPL.
* Authors: Jonathan Blandford <jrb@redhat.com>
* Owen Taylor <otaylor@redhat.com>
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <gconf/gconf-client.h>
#include <glade/glade.h>
#include <ctype.h>
#include "capplet-util.h"
#include "gconf-property-editor.h"
#include "wm-properties.h"
//#include "gnome-startup.h"
/* prototypes */
static void restart (gboolean force);
static void revert_callback (void);
static void cancel_callback (void);
/* structures */
typedef struct {
GtkWidget *dialog;
GtkWidget *name_entry;
GtkWidget *exec_entry;
GtkWidget *config_entry;
GtkWidget *sm_toggle;
} WMDialog;
/* vars. */
static GtkWidget *capplet;
static GtkWidget *wm_widget;
static GtkWidget *apply_now_button;
static WindowManager *selected_wm = NULL;
static GtkWidget *restart_dialog = NULL;
static GtkWidget *restart_label = NULL;
guint restart_dialog_timeout;
gchar *restart_name = NULL;
/* Time until dialog times out */
gdouble restart_remaining_time;
gint restart_displayed_time;
GnomeClient *client = NULL;
gchar *argv0;
/* Enumeration describing the current state of the capplet.
* in any other state than idle, all controls are !sensitive.
*/
typedef enum {
STATE_IDLE,
STATE_TRY,
STATE_REVERT,
STATE_OK,
STATE_CANCEL,
STATE_TRY_REVERT, /* Currently trying, revert afterwards */
STATE_TRY_CANCEL /* Currently trying, cancel afterwards */
} StateType;
/* The possible transitions between states are described below.
*
* operation | try revert ok cancel finish
* ===========+=================================================
* IDLE | TRY REVERT OK CANCEL
* TRY | TRY_REVERT OK TRY_CANCEL IDLE
* REVERT | CANCEL CANCEL IDLE
* OK | (quit)
* CANCEL | (quit)
* TRY_REVERT | TRY_CANCEL TRY_CANCEL REVERT
* TRY_CANCEL | CANCEL
*
* When a restart fails, there are three cases
*
* (1) The failure was because the current window manager didn't
* die. We inform the user of the situation, and then
* abort the operation.
*
* (2) The window manager didn't start, and we don't have a
* a fallback. We pop up a error dialog, tell the user
* to start a new window manager, and abort the operation.
*
* (3) The window manager didn't start, and we previously had a
* window manager runnning. We pop up a warning dialog,
* then try to go back to the old window manager.
*
* operation | (1) (2) (3)
* ===========+=================================================
* IDLE |
* TRY | IDLE IDLE TRY
* REVERT | IDLE IDLE REVERT
* OK | (quit) (quit) OK
* CANCEL | (quit) (quit) CANCEL
* TRY_REVERT | REVERT REVERT REVERT
* TRY_CANCEL | CANCEL CANCEL CANCEL
*/
/* Current state
*/
StateType state = STATE_IDLE;
/* Set TRUE when we've exited the main loop, but restart_pending
*/
gboolean quit_pending = FALSE;
/* Set TRUE when we're waiting for the WM to restart
*/
gboolean restart_pending = FALSE;
/* Set TRUE while we are filling in the list
*/
gboolean in_fill = FALSE;
static gint cap_session_init = 0;
static struct poptOption cap_options[] = {
{"init-session-settings", '\0', POPT_ARG_NONE, &cap_session_init, 0,
N_("Initialize session settings"), NULL},
{NULL, '\0', 0, NULL, 0}
};
static void state_changed (void);
static void update_session (void);
static GtkWidget *wm_menu;
static GtkWidget *option_menu;
static GList *wm_menu_window_managers;
static void
wm_selection_changed (GtkOptionMenu *option_menu, gpointer data)
{
int index;
WindowManager *wm;
index = gtk_option_menu_get_history (option_menu);
wm = (WindowManager *) g_list_nth (wm_menu_window_managers, index)->data;
if (!in_fill) {
if (wm != selected_wm) {
selected_wm = wm;
state_changed ();
}
}
}
static void
wm_widget_clear ()
{
wm_menu_window_managers = NULL;
wm_menu = gtk_menu_new ();
gtk_widget_show_all (wm_menu);
gtk_option_menu_set_menu (GTK_OPTION_MENU (option_menu), wm_menu);
}
GtkWidget *
wm_widget_new ()
{
option_menu = gtk_option_menu_new ();
g_signal_connect (G_OBJECT (option_menu), "changed",
wm_selection_changed, NULL);
wm_widget_clear ();
gtk_widget_show_all (option_menu);
return option_menu;
}
static void
wm_widget_add_wm (WindowManager *wm, const char *row_text)
{
GtkWidget *menu_item;
menu_item = gtk_menu_item_new_with_label (row_text);
gtk_widget_show_all (menu_item);
gtk_menu_shell_prepend (GTK_MENU_SHELL (wm_menu), menu_item);
wm_menu_window_managers = g_list_prepend (wm_menu_window_managers, wm);
if (wm == selected_wm)
gtk_option_menu_set_history (GTK_OPTION_MENU (option_menu), 0);
}
static void
response_cb (GtkDialog *dialog, gint response_id, gpointer data)
{
switch (response_id)
{
case GTK_RESPONSE_NONE:
case GTK_RESPONSE_CLOSE:
gtk_main_quit ();
break;
}
}
static void
state_changed (void)
{
gtk_widget_set_sensitive (apply_now_button, TRUE);
}
static void
restart_label_update (void)
{
gchar *tmp;
if ((gint)restart_remaining_time != restart_displayed_time) {
restart_displayed_time = restart_remaining_time;
tmp = g_strdup_printf (_("Starting %s\n"
"(%d seconds left before operation times out)"),
restart_name,
restart_displayed_time);
gtk_label_set_text (GTK_LABEL (restart_label), tmp);
g_free (tmp);
}
}
static gboolean
restart_dialog_raise (gpointer data)
{
if (restart_dialog && GTK_WIDGET_REALIZED (restart_dialog)) {
restart_remaining_time -= 0.25;
restart_label_update();
gdk_window_raise (restart_dialog->window);
}
return TRUE;
}
static void
restart_dialog_destroyed (GtkWidget *widget)
{
if (restart_dialog_timeout) {
gtk_timeout_remove (restart_dialog_timeout);
restart_dialog_timeout = 0;
}
restart_dialog = NULL;
}
static void
show_restart_dialog (gchar *name)
{
GtkWidget *hbox;
GtkWidget *frame;
GtkWidget *pixmap;
gchar *tmp;
if (!restart_dialog) {
restart_dialog = gtk_window_new (GTK_WINDOW_POPUP);
gtk_window_set_position (GTK_WINDOW (restart_dialog),
GTK_WIN_POS_CENTER);
gtk_signal_connect (GTK_OBJECT (restart_dialog), "destroy",
GTK_SIGNAL_FUNC (restart_dialog_destroyed),
&restart_dialog);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
gtk_container_add (GTK_CONTAINER (restart_dialog), frame);
hbox = gtk_hbox_new (FALSE, GNOME_PAD);
gtk_container_set_border_width (GTK_CONTAINER (hbox), GNOME_PAD);
gtk_container_add (GTK_CONTAINER (frame), hbox);
tmp = gnome_unconditional_pixmap_file("gnome-info.png");
if (tmp) {
pixmap = gnome_pixmap_new_from_file(tmp);
g_free(tmp);
gtk_box_pack_start (GTK_BOX (hbox), pixmap, FALSE, FALSE, 0);
}
restart_label = gtk_label_new ("");
gtk_box_pack_start (GTK_BOX (hbox), restart_label, FALSE, FALSE, GNOME_PAD);
}
if (!restart_dialog_timeout) {
restart_dialog_timeout = gtk_timeout_add (250, restart_dialog_raise, NULL);
}
restart_remaining_time = 10.0;
restart_displayed_time = -1;
if (restart_name)
g_free (restart_name);
restart_name = g_strdup (name);
restart_label_update ();
gtk_widget_show_all (restart_dialog);
}
static void
hide_restart_dialog (void)
{
if (restart_dialog)
gtk_widget_destroy (restart_dialog);
}
static void
update_session (void)
{
WindowManager *current_wm = wm_list_get_current();
gchar *session_args[3];
if (!current_wm)
return;
if (current_wm->session_managed) {
gnome_client_set_restart_style (client,
GNOME_RESTART_NEVER);
} else {
session_args[0] = argv0;
session_args[1] = "--init-session-settings";
session_args[2] = NULL;
/* We use a priority of 15 so that we start after
* session-managed WM's (priority 10), for safety.
*/
gnome_client_set_priority (client, 15);
gnome_client_set_restart_style (client,
GNOME_RESTART_ANYWAY);
gnome_client_set_restart_command (client, 2,
session_args);
}
gnome_client_flush (client);
}
static void
init_session (void)
{
GnomeClientFlags flags;
gint token;
return;
client = gnome_master_client ();
flags = gnome_client_get_flags (client);
if (flags & GNOME_CLIENT_IS_CONNECTED) {
/*token = gnome_startup_acquire_token("GNOME_WM_PROPERTIES",
gnome_client_get_id(client));*/
if (token)
update_session();
else {
gnome_client_set_restart_style (client,
GNOME_RESTART_NEVER);
gnome_client_flush (client);
}
}
}
static void
update_gui (void)
{
GList *tmp_list;
wm_widget_clear ();
in_fill = TRUE;
tmp_list = window_managers;
while (tmp_list) {
gchar *row_text;
WindowManager *wm;
wm = tmp_list->data;
if (wm->is_user && !wm->is_present) {
row_text = g_strconcat (gnome_desktop_item_get_string (wm->dentry, GNOME_DESKTOP_ITEM_NAME),
_(" (Not found)"), NULL);
} else {
row_text = g_strdup (gnome_desktop_item_get_string (wm->dentry, GNOME_DESKTOP_ITEM_NAME));
}
wm_widget_add_wm (wm, row_text);
g_free (row_text);
tmp_list = tmp_list->next;
}
in_fill = FALSE;
}
static void
init_callback (WMResult result, gpointer data)
{
switch (result) {
case WM_SUCCESS:
break;
case WM_ALREADY_RUNNING:
g_warning (_("wm-properties-capplet: Unable to initialize window manager.\n"
"\tAnother window manager is already running and could not be killed\n"));
break;
case WM_CANT_START:
g_warning (_("wm-properties-capplet: Unable to initialize window manager.\n"
"\t'%s' didn't start\n"), (gchar *)data);
break;
}
g_free (data);
gtk_main_quit ();
}
static void
restart_finalize ()
{
wm_list_set_current (selected_wm);
hide_restart_dialog();
switch (state) {
case STATE_TRY:
case STATE_REVERT:
gtk_widget_set_sensitive (capplet, TRUE);
update_gui();
state = STATE_IDLE;
break;
case STATE_OK:
case STATE_CANCEL:
if (quit_pending)
gtk_main_quit();
break;
default:
g_warning ("Finalize in state %d!!!\n", state);
return;
}
restart_pending = FALSE;
}
static void
restart_failure (WMResult reason)
{
GtkWidget *msgbox;
WindowManager *current_wm;
gchar *msg = NULL;
gboolean modal = FALSE;
current_wm = wm_list_get_current ();
/* Did the previous window manager not die?
*/
if (reason == WM_ALREADY_RUNNING) {
msg = g_strdup (_("Previous window manager did not die\n"));
switch (state) {
case STATE_TRY:
case STATE_REVERT:
case STATE_OK:
case STATE_CANCEL:
selected_wm = current_wm;
restart_finalize ();
break;
case STATE_TRY_REVERT:
revert_callback ();
break;
case STATE_TRY_CANCEL:
cancel_callback ();
break;
default:
g_warning ("Failure in state %d!!!\n", state);
return;
}
}
/* Is there something reasonable to try to fall back to?
*/
else if (current_wm != selected_wm) {
switch (state) {
case STATE_TRY:
case STATE_REVERT:
case STATE_OK:
case STATE_CANCEL:
msg = g_strdup_printf (_("Could not start '%s'.\n"
"Falling back to previous window manager '%s'\n"),
selected_wm?gnome_desktop_item_get_string (selected_wm->dentry, GNOME_DESKTOP_ITEM_NAME):"Unknown",
current_wm?gnome_desktop_item_get_string (current_wm->dentry, GNOME_DESKTOP_ITEM_NAME):"Unknown");
selected_wm = current_wm;
restart(TRUE);
break;
case STATE_TRY_REVERT:
revert_callback ();
break;
case STATE_TRY_CANCEL:
cancel_callback ();
break;
default:
g_warning ("Failure in state %d!!!\n", state);
return;
}
/* Give up */
} else {
switch (state) {
case STATE_OK:
case STATE_CANCEL:
modal = TRUE; /* prevent an immediate exit */
/* Fall through */
case STATE_TRY:
case STATE_REVERT:
msg = g_strdup (_("Could not start fallback window manager.\n"
"Please run a window manager manually. You can\n"
"do this by selecting \"Run Program\" in the\n"
"foot menu\n"));
restart_finalize();
break;
case STATE_TRY_REVERT:
revert_callback ();
break;
case STATE_TRY_CANCEL:
cancel_callback ();
break;
default:
g_warning ("Failure in state %d!!!\n", state);
return;
}
}
if (msg) {
msgbox = gnome_message_box_new (msg,
GNOME_MESSAGE_BOX_ERROR,
_("OK"), NULL);
if (modal)
gnome_dialog_run (GNOME_DIALOG (msgbox));
else
gtk_widget_show (msgbox);
g_free (msg);
}
}
static void
show_restart_info (void)
{
gchar *save_session;
save_session = gnome_is_program_in_path ("save-session");
if (save_session != NULL) {
system (save_session);
}
g_free (save_session);
}
static void
restart_finish (void)
{
switch (state) {
case STATE_TRY:
case STATE_REVERT:
case STATE_OK:
case STATE_CANCEL:
hide_restart_dialog();
show_restart_info ();
restart_finalize();
break;
case STATE_TRY_REVERT:
revert_callback ();
break;
case STATE_TRY_CANCEL:
cancel_callback ();
break;
default:
g_warning ("Finished in state %d!!!\n", state);
return;
}
}
static void
restart_callback (WMResult result, gpointer data)
{
if (result == WM_SUCCESS)
restart_finish ();
else
restart_failure (result);
}
static void
restart (gboolean force)
{
WindowManager *current_wm = wm_list_get_current(), *mywm;
static gboolean last_try_was_twm = FALSE;
GnomeDesktopItem *twm_dentry = gnome_desktop_item_new ();
WindowManager twm_fallback = {twm_dentry, "twm", "twm", 0, 0, 1, 0};
gnome_desktop_item_set_entry_type (twm_dentry, GNOME_DESKTOP_ITEM_TYPE_APPLICATION);
gnome_desktop_item_set_string (twm_dentry,
GNOME_DESKTOP_ITEM_NAME, "twm");
gnome_desktop_item_set_string (twm_dentry,
GNOME_DESKTOP_ITEM_COMMENT, "twm");
gnome_desktop_item_set_string (twm_dentry,
GNOME_DESKTOP_ITEM_EXEC, "twm");
if(selected_wm) {
last_try_was_twm = FALSE;
mywm = selected_wm;
} else if(!last_try_was_twm) {
last_try_was_twm = TRUE;
mywm = (WindowManager*)&twm_fallback;
} else {
restart_finalize();
gnome_desktop_item_unref (twm_dentry);
return;
}
if (force || current_wm != mywm) {
show_restart_dialog (g_strdup (gnome_desktop_item_get_string (mywm->dentry, GNOME_DESKTOP_ITEM_NAME)));
if (state != STATE_OK && state != STATE_CANCEL)
gtk_widget_set_sensitive (capplet, FALSE);
restart_pending = TRUE;
wm_restart (mywm,
capplet->window,
restart_callback,
NULL);
} else {
restart_finalize ();
}
gnome_desktop_item_unref (twm_dentry);
}
static void
revert_callback (void)
{
StateType old_state = state;
switch (state) {
case STATE_IDLE:
case STATE_TRY_REVERT:
wm_list_revert();
selected_wm = wm_list_get_revert();
state = STATE_REVERT;
restart (old_state == STATE_TRY_REVERT);
update_gui();
break;
case STATE_TRY:
state = STATE_TRY_REVERT;
break;
default:
g_warning ("revert callback in state %d!!!\n", state);
return;
}
}
static void
cancel_callback (void)
{
StateType old_state = state;
switch (state) {
case STATE_IDLE:
case STATE_TRY_CANCEL:
wm_list_revert();
selected_wm = wm_list_get_revert();
state = STATE_CANCEL;
restart (old_state == STATE_TRY_CANCEL);
break;
case STATE_TRY:
state = STATE_TRY_CANCEL;
break;
case STATE_REVERT:
state = STATE_CANCEL;
break;
case STATE_TRY_REVERT:
state = STATE_TRY_CANCEL;
break;
default:
g_warning ("ok callback in state %d!!!\n", state);
return;
}
}
static void
apply_wm (GObject *object, gpointer data)
{
state = STATE_TRY;
restart(FALSE);
wm_list_set_current (selected_wm);
wm_list_save ();
update_session ();
}
static GladeXML *
create_dialog (void)
{
GladeXML *dialog;
dialog = glade_xml_new (GNOMECC_DATA_DIR "/interfaces/gnome-window-properties.glade", "prefs_widget", NULL);
apply_now_button = WID ("apply_now_button");
gtk_widget_set_sensitive (apply_now_button, FALSE);
g_signal_connect (G_OBJECT (apply_now_button), "clicked", apply_wm, NULL);
wm_widget = wm_widget_new ();
gtk_box_pack_start (GTK_BOX (WID ("wm_widget_box")), wm_widget, TRUE, TRUE, 0);
update_gui();
return dialog;
}
int
main (int argc, char **argv)
{
GladeXML *dialog;
GtkWidget *dialog_win;
bindtextdomain (PACKAGE, GNOMELOCALEDIR);
textdomain (PACKAGE);
argv0 = g_strdup (argv[0]);
gnome_program_init ("wm-properties", VERSION,
LIBGNOMEUI_MODULE, argc, argv,
GNOME_PARAM_POPT_TABLE, &cap_options,
NULL);
/* Read in the list of window managers, and the current
* window manager
*/
wm_list_init();
selected_wm = wm_list_get_current();
if (!cap_session_init)
{
init_session();
dialog = create_dialog ();
dialog_win = gtk_dialog_new_with_buttons
(_("Window Preferences"), NULL, -1,
GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE,
NULL);
g_signal_connect (G_OBJECT (dialog_win), "response", response_cb, NULL);
capplet = dialog_win;
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dialog_win)->vbox), WID ("prefs_widget"), TRUE, TRUE, GNOME_PAD_SMALL);
gtk_widget_show_all (dialog_win);
gtk_main ();
if (restart_pending) {
quit_pending = TRUE;
gtk_main();
}
}
else {
if (selected_wm &&
!selected_wm->session_managed &&
!wm_is_running()) {
wm_restart (selected_wm, NULL, init_callback,
g_strdup (gnome_desktop_item_get_string (selected_wm->dentry, GNOME_DESKTOP_ITEM_NAME)));
gtk_main ();
}
init_session();
}
return 0;
}
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