claws-mail/src/addr_compl.c
Alfons Hoogervorst 7f0ae644cf * src/addr_compl.c
replace_address_in_edit(): strict check for NULL address to
	fix "[ 607348 ] Segfault in address completion". My guess is
	that this happens with an empty address book, but it's good
	to have this check here anyway

	completion_window_button_press(): free string returned
	from the internal cache
2002-09-20 19:54:22 +00:00

970 lines
27 KiB
C

/*
* Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
*
* Copyright (c) 2000-2001 by Alfons Hoogervorst <alfons@proteus.demon.nl>
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "intl.h"
#include "defs.h"
#include <glib.h>
#include <gdk/gdkkeysyms.h>
#include <gtk/gtkmain.h>
#include <gtk/gtkwindow.h>
#include <gtk/gtkentry.h>
#include <gtk/gtkeditable.h>
#include <gtk/gtkclist.h>
#include <gtk/gtkscrolledwindow.h>
#include <string.h>
#include <ctype.h>
#if (HAVE_WCTYPE_H && HAVE_WCHAR_H)
# include <wchar.h>
# include <wctype.h>
#endif
#include "xml.h"
#include "addr_compl.h"
#include "utils.h"
#include "addressbook.h"
#include "main.h"
/* How it works:
*
* The address book is read into memory. We set up an address list
* containing all address book entries. Next we make the completion
* list, which contains all the completable strings, and store a
* reference to the address entry it belongs to.
* After calling the g_completion_complete(), we get a reference
* to a valid email address.
*
* Completion is very simplified. We never complete on another prefix,
* i.e. we neglect the next smallest possible prefix for the current
* completion cache. This is simply done so we might break up the
* addresses a little more (e.g. break up alfons@proteus.demon.nl into
* something like alfons, proteus, demon, nl; and then completing on
* any of those words).
*/
/* address_entry - structure which refers to the original address entry in the
* address book
*/
typedef struct
{
gchar *name;
gchar *address;
} address_entry;
/* completion_entry - structure used to complete addresses, with a reference
* the the real address information.
*/
typedef struct
{
gchar *string; /* string to complete */
address_entry *ref; /* address the string belongs to */
} completion_entry;
/*******************************************************************************/
static gint g_ref_count; /* list ref count */
static GList *g_completion_list; /* list of strings to be checked */
static GList *g_address_list; /* address storage */
static GCompletion *g_completion; /* completion object */
/* To allow for continuing completion we have to keep track of the state
* using the following variables. No need to create a context object. */
static gint g_completion_count; /* nr of addresses incl. the prefix */
static gint g_completion_next; /* next prev address */
static GSList *g_completion_addresses; /* unique addresses found in the
completion cache. */
static gchar *g_completion_prefix; /* last prefix. (this is cached here
* because the prefix passed to g_completion
* is g_strdown()'ed */
/*******************************************************************************/
/* completion_func() - used by GTK to find the string data to be used for
* completion
*/
static gchar *completion_func(gpointer data)
{
g_return_val_if_fail(data != NULL, NULL);
return ((completion_entry *)data)->string;
}
static void init_all(void)
{
g_completion = g_completion_new(completion_func);
g_return_if_fail(g_completion != NULL);
}
static void free_all(void)
{
GList *walk;
walk = g_list_first(g_completion_list);
for (; walk != NULL; walk = g_list_next(walk)) {
completion_entry *ce = (completion_entry *) walk->data;
g_free(ce->string);
g_free(walk->data);
}
g_list_free(g_completion_list);
g_completion_list = NULL;
walk = g_address_list;
for (; walk != NULL; walk = g_list_next(walk)) {
address_entry *ae = (address_entry *) walk->data;
g_free(ae->name);
g_free(ae->address);
g_free(walk->data);
}
g_list_free(g_address_list);
g_address_list = NULL;
g_completion_free(g_completion);
g_completion = NULL;
}
static void add_address1(const char *str, address_entry *ae)
{
completion_entry *ce1;
ce1 = g_new0(completion_entry, 1),
ce1->string = g_strdup(str);
/* GCompletion list is case sensitive */
g_strdown(ce1->string);
ce1->ref = ae;
g_completion_list = g_list_append(g_completion_list, ce1);
}
/* add_address() - adds address to the completion list. this function looks
* complicated, but it's only allocation checks.
*/
static gint add_address(const gchar *name, const gchar *address, const gchar *alias)
{
address_entry *ae;
if (!name || !address) return -1;
debug_print( "completion: add_address: %s - %s\n", name, address );
ae = g_new0(address_entry, 1);
g_return_val_if_fail(ae != NULL, -1);
ae->name = g_strdup(name);
ae->address = g_strdup(address);
g_address_list = g_list_append(g_address_list, ae);
add_address1(name, ae);
add_address1(address, ae);
add_address1(alias, ae);
return 0;
}
/* read_address_book()
*/
static void read_address_book(void) {
addressbook_load_completion( add_address );
}
/* start_address_completion() - returns the number of addresses
* that should be matched for completion.
*/
gint start_address_completion(void)
{
clear_completion_cache();
if (!g_ref_count) {
init_all();
/* open the address book */
read_address_book();
/* merge the completion entry list into g_completion */
if (g_completion_list)
g_completion_add_items(g_completion, g_completion_list);
}
g_ref_count++;
debug_print("start_address_completion ref count %d\n", g_ref_count);
return g_list_length(g_completion_list);
}
/* get_address_from_edit() - returns a possible address (or a part)
* from an entry box. To make life easier, we only look at the last valid address
* component; address completion only works at the last string component in
* the entry box.
*/
gchar *get_address_from_edit(GtkEntry *entry, gint *start_pos)
{
const gchar *edit_text;
gint cur_pos;
wchar_t *wtext;
wchar_t *wp;
wchar_t rfc_mail_sep;
wchar_t quote;
wchar_t lt;
wchar_t gt;
gboolean in_quote = FALSE;
gboolean in_bracket = FALSE;
gchar *str;
if (mbtowc(&rfc_mail_sep, ",", 1) < 0) return NULL;
if (mbtowc(&quote, "\"", 1) < 0) return NULL;
if (mbtowc(&lt, "<", 1) < 0) return NULL;
if (mbtowc(&gt, ">", 1) < 0) return NULL;
edit_text = gtk_entry_get_text(entry);
if (edit_text == NULL) return NULL;
wtext = strdup_mbstowcs(edit_text);
g_return_val_if_fail(wtext != NULL, NULL);
cur_pos = gtk_editable_get_position(GTK_EDITABLE(entry));
/* scan for a separator. doesn't matter if walk points at null byte. */
for (wp = wtext + cur_pos; wp > wtext; wp--) {
if (*wp == quote)
in_quote ^= TRUE;
else if (!in_quote) {
if (!in_bracket && *wp == rfc_mail_sep)
break;
else if (*wp == gt)
in_bracket = TRUE;
else if (*wp == lt)
in_bracket = FALSE;
}
}
/* have something valid */
if (wcslen(wp) == 0) {
g_free(wtext);
return NULL;
}
#define IS_VALID_CHAR(x) \
(iswalnum(x) || (x) == quote || (x) == lt || ((x) > 0x7f))
/* now scan back until we hit a valid character */
for (; *wp && !IS_VALID_CHAR(*wp); wp++)
;
#undef IS_VALID_CHAR
if (wcslen(wp) == 0) {
g_free(wtext);
return NULL;
}
if (start_pos) *start_pos = wp - wtext;
str = strdup_wcstombs(wp);
g_free(wtext);
return str;
}
/* replace_address_in_edit() - replaces an incompleted address with a completed one.
*/
void replace_address_in_edit(GtkEntry *entry, const gchar *newtext,
gint start_pos)
{
if (!newtext) return;
gtk_editable_delete_text(GTK_EDITABLE(entry), start_pos, -1);
gtk_editable_insert_text(GTK_EDITABLE(entry), newtext, strlen(newtext),
&start_pos);
gtk_editable_set_position(GTK_EDITABLE(entry), -1);
}
/* complete_address() - tries to complete an addres, and returns the
* number of addresses found. use get_complete_address() to get one.
* returns zero if no match was found, otherwise the number of addresses,
* with the original prefix at index 0.
*/
guint complete_address(const gchar *str)
{
GList *result;
gchar *d;
guint count, cpl;
completion_entry *ce;
g_return_val_if_fail(str != NULL, 0);
Xstrdup_a(d, str, return 0);
clear_completion_cache();
g_completion_prefix = g_strdup(str);
/* g_completion is case sensitive */
g_strdown(d);
result = g_completion_complete(g_completion, d, NULL);
count = g_list_length(result);
if (count) {
/* create list with unique addresses */
for (cpl = 0, result = g_list_first(result);
result != NULL;
result = g_list_next(result)) {
ce = (completion_entry *)(result->data);
if (NULL == g_slist_find(g_completion_addresses,
ce->ref)) {
cpl++;
g_completion_addresses =
g_slist_append(g_completion_addresses,
ce->ref);
}
}
count = cpl + 1; /* index 0 is the original prefix */
g_completion_next = 1; /* we start at the first completed one */
} else {
g_free(g_completion_prefix);
g_completion_prefix = NULL;
}
g_completion_count = count;
return count;
}
/* get_complete_address() - returns a complete address. the returned
* string should be freed
*/
gchar *get_complete_address(gint index)
{
const address_entry *p;
gchar *address = NULL;
if (index < g_completion_count) {
if (index == 0)
address = g_strdup(g_completion_prefix);
else {
/* get something from the unique addresses */
p = (address_entry *)g_slist_nth_data
(g_completion_addresses, index - 1);
if (p != NULL) {
if (!p->name || p->name[0] == '\0')
address = g_strdup_printf(p->address);
else if (strchr_with_skip_quote(p->name, '"', ','))
address = g_strdup_printf
("\"%s\" <%s>", p->name, p->address);
else
address = g_strdup_printf
("%s <%s>", p->name, p->address);
}
}
}
return address;
}
gchar *get_next_complete_address(void)
{
if (is_completion_pending()) {
gchar *res;
res = get_complete_address(g_completion_next);
g_completion_next += 1;
if (g_completion_next >= g_completion_count)
g_completion_next = 0;
return res;
} else
return NULL;
}
gchar *get_prev_complete_address(void)
{
if (is_completion_pending()) {
int n = g_completion_next - 2;
/* real previous */
n = (n + (g_completion_count * 5)) % g_completion_count;
/* real next */
g_completion_next = n + 1;
if (g_completion_next >= g_completion_count)
g_completion_next = 0;
return get_complete_address(n);
} else
return NULL;
}
guint get_completion_count(void)
{
if (is_completion_pending())
return g_completion_count;
else
return 0;
}
/* should clear up anything after complete_address() */
void clear_completion_cache(void)
{
if (is_completion_pending()) {
if (g_completion_prefix)
g_free(g_completion_prefix);
if (g_completion_addresses) {
g_slist_free(g_completion_addresses);
g_completion_addresses = NULL;
}
g_completion_count = g_completion_next = 0;
}
}
gboolean is_completion_pending(void)
{
/* check if completion pending, i.e. we might satisfy a request for the next
* or previous address */
return g_completion_count;
}
/* invalidate_address_completion() - should be called if address book
* changed;
*/
gint invalidate_address_completion(void)
{
if (g_ref_count) {
/* simply the same as start_address_completion() */
debug_print("Invalidation request for address completion\n");
free_all();
init_all();
read_address_book();
g_completion_add_items(g_completion, g_completion_list);
clear_completion_cache();
}
return g_list_length(g_completion_list);
}
gint end_address_completion(void)
{
clear_completion_cache();
if (0 == --g_ref_count)
free_all();
debug_print("end_address_completion ref count %d\n", g_ref_count);
return g_ref_count;
}
/* address completion entry ui. the ui (completion list was inspired by galeon's
* auto completion list). remaining things powered by sylpheed's completion engine.
*/
#define ENTRY_DATA_TAB_HOOK "tab_hook" /* used to lookup entry */
#define WINDOW_DATA_COMPL_ENTRY "compl_entry" /* used to store entry for compl. window */
#define WINDOW_DATA_COMPL_CLIST "compl_clist" /* used to store clist for compl. window */
static void address_completion_mainwindow_set_focus (GtkWindow *window,
GtkWidget *widget,
gpointer data);
static gboolean address_completion_entry_key_pressed (GtkEntry *entry,
GdkEventKey *ev,
gpointer data);
static gboolean address_completion_complete_address_in_entry
(GtkEntry *entry,
gboolean next);
static void address_completion_create_completion_window (GtkEntry *entry);
static void completion_window_select_row(GtkCList *clist,
gint row,
gint col,
GdkEvent *event,
GtkWidget **completion_window);
static gboolean completion_window_button_press
(GtkWidget *widget,
GdkEventButton *event,
GtkWidget **completion_window);
static gboolean completion_window_key_press
(GtkWidget *widget,
GdkEventKey *event,
GtkWidget **completion_window);
static void completion_window_advance_to_row(GtkCList *clist, gint row)
{
g_return_if_fail(row < g_completion_count);
gtk_clist_select_row(clist, row, 0);
}
static void completion_window_advance_selection(GtkCList *clist, gboolean forward)
{
int row;
g_return_if_fail(clist != NULL);
g_return_if_fail(clist->selection != NULL);
row = GPOINTER_TO_INT(clist->selection->data);
row = forward ? (row + 1) % g_completion_count :
(row - 1) < 0 ? g_completion_count - 1 : row - 1;
gtk_clist_freeze(clist);
completion_window_advance_to_row(clist, row);
gtk_clist_thaw(clist);
}
#if 0
/* completion_window_accept_selection() - accepts the current selection in the
* clist, and destroys the window */
static void completion_window_accept_selection(GtkWidget **window,
GtkCList *clist,
GtkEntry *entry)
{
gchar *address = NULL, *text = NULL;
gint cursor_pos, row;
g_return_if_fail(window != NULL);
g_return_if_fail(*window != NULL);
g_return_if_fail(clist != NULL);
g_return_if_fail(entry != NULL);
g_return_if_fail(clist->selection != NULL);
/* FIXME: I believe it's acceptable to access the selection member directly */
row = GPOINTER_TO_INT(clist->selection->data);
/* we just need the cursor position */
address = get_address_from_edit(entry, &cursor_pos);
g_free(address);
gtk_clist_get_text(clist, row, 0, &text);
replace_address_in_edit(entry, text, cursor_pos);
clear_completion_cache();
gtk_widget_destroy(*window);
*window = NULL;
}
#endif
/* completion_window_apply_selection() - apply the current selection in the
* clist */
static void completion_window_apply_selection(GtkCList *clist, GtkEntry *entry)
{
gchar *address = NULL, *text = NULL;
gint cursor_pos, row;
g_return_if_fail(clist != NULL);
g_return_if_fail(entry != NULL);
g_return_if_fail(clist->selection != NULL);
row = GPOINTER_TO_INT(clist->selection->data);
address = get_address_from_edit(entry, &cursor_pos);
g_free(address);
gtk_clist_get_text(clist, row, 0, &text);
replace_address_in_edit(entry, text, cursor_pos);
}
/* should be called when creating the main window containing address
* completion entries */
void address_completion_start(GtkWidget *mainwindow)
{
start_address_completion();
/* register focus change hook */
gtk_signal_connect(GTK_OBJECT(mainwindow), "set_focus",
GTK_SIGNAL_FUNC(address_completion_mainwindow_set_focus),
mainwindow);
}
/* Need unique data to make unregistering signal handler possible for the auto
* completed entry */
#define COMPLETION_UNIQUE_DATA (GINT_TO_POINTER(0xfeefaa))
void address_completion_register_entry(GtkEntry *entry)
{
g_return_if_fail(entry != NULL);
g_return_if_fail(GTK_IS_ENTRY(entry));
/* add hooked property */
gtk_object_set_data(GTK_OBJECT(entry), ENTRY_DATA_TAB_HOOK, entry);
/* add keypress event */
gtk_signal_connect_full(GTK_OBJECT(entry), "key_press_event",
GTK_SIGNAL_FUNC(address_completion_entry_key_pressed),
NULL,
COMPLETION_UNIQUE_DATA,
NULL,
0,
0); /* magic */
}
void address_completion_unregister_entry(GtkEntry *entry)
{
GtkObject *entry_obj;
g_return_if_fail(entry != NULL);
g_return_if_fail(GTK_IS_ENTRY(entry));
entry_obj = gtk_object_get_data(GTK_OBJECT(entry), ENTRY_DATA_TAB_HOOK);
g_return_if_fail(entry_obj);
g_return_if_fail(entry_obj == GTK_OBJECT(entry));
/* has the hooked property? */
gtk_object_set_data(GTK_OBJECT(entry), ENTRY_DATA_TAB_HOOK, NULL);
/* remove the hook */
gtk_signal_disconnect_by_func(GTK_OBJECT(entry),
GTK_SIGNAL_FUNC(address_completion_entry_key_pressed),
COMPLETION_UNIQUE_DATA);
}
/* should be called when main window with address completion entries
* terminates.
* NOTE: this function assumes that it is called upon destruction of
* the window */
void address_completion_end(GtkWidget *mainwindow)
{
/* if address_completion_end() is really called on closing the window,
* we don't need to unregister the set_focus_cb */
end_address_completion();
}
/* if focus changes to another entry, then clear completion cache */
static void address_completion_mainwindow_set_focus(GtkWindow *window,
GtkWidget *widget,
gpointer data)
{
if (widget)
clear_completion_cache();
}
/* watch for tabs in one of the address entries. if no tab then clear the
* completion cache */
static gboolean address_completion_entry_key_pressed(GtkEntry *entry,
GdkEventKey *ev,
gpointer data)
{
if (ev->keyval == GDK_Tab) {
if (address_completion_complete_address_in_entry(entry, TRUE)) {
address_completion_create_completion_window(entry);
/* route a void character to the default handler */
/* this is a dirty hack; we're actually changing a key
* reported by the system. */
ev->keyval = GDK_AudibleBell_Enable;
ev->state &= ~GDK_SHIFT_MASK;
gtk_signal_emit_stop_by_name(GTK_OBJECT(entry),
"key_press_event");
} else {
/* old behaviour */
}
} else if (ev->keyval == GDK_Shift_L
|| ev->keyval == GDK_Shift_R
|| ev->keyval == GDK_Control_L
|| ev->keyval == GDK_Control_R
|| ev->keyval == GDK_Caps_Lock
|| ev->keyval == GDK_Shift_Lock
|| ev->keyval == GDK_Meta_L
|| ev->keyval == GDK_Meta_R
|| ev->keyval == GDK_Alt_L
|| ev->keyval == GDK_Alt_R) {
/* these buttons should not clear the cache... */
} else
clear_completion_cache();
return TRUE;
}
/* initialize the completion cache and put first completed string
* in entry. this function used to do back cycling but this is not
* currently used. since the address completion behaviour has been
* changed regularly, we keep the feature in case someone changes
* his / her mind again. :) */
static gboolean address_completion_complete_address_in_entry(GtkEntry *entry,
gboolean next)
{
gint ncount, cursor_pos;
gchar *address, *new = NULL;
gboolean completed = FALSE;
g_return_val_if_fail(entry != NULL, FALSE);
if (!GTK_WIDGET_HAS_FOCUS(entry)) return FALSE;
/* get an address component from the cursor */
address = get_address_from_edit(entry, &cursor_pos);
if (!address) return FALSE;
/* still something in the cache */
if (is_completion_pending()) {
new = next ? get_next_complete_address() :
get_prev_complete_address();
} else {
if (0 < (ncount = complete_address(address)))
new = get_next_complete_address();
}
if (new) {
/* prevent "change" signal */
/* replace_address_in_edit(entry, new, cursor_pos); */
g_free(new);
completed = TRUE;
}
g_free(address);
return completed;
}
static void address_completion_create_completion_window(GtkEntry *entry_)
{
static GtkWidget *completion_window;
gint x, y, height, width, depth;
GtkWidget *scroll, *clist;
GtkRequisition r;
guint count = 0;
GtkWidget *entry = GTK_WIDGET(entry_);
if (completion_window) {
gtk_widget_destroy(completion_window);
completion_window = NULL;
}
scroll = gtk_scrolled_window_new(NULL, NULL);
clist = gtk_clist_new(1);
gtk_clist_set_selection_mode(GTK_CLIST(clist), GTK_SELECTION_SINGLE);
completion_window = gtk_window_new(GTK_WINDOW_POPUP);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
gtk_container_add(GTK_CONTAINER(completion_window), scroll);
gtk_container_add(GTK_CONTAINER(scroll), clist);
/* set the unique data so we can always get back the entry and
* clist window to which this completion window has been attached */
gtk_object_set_data(GTK_OBJECT(completion_window),
WINDOW_DATA_COMPL_ENTRY, entry_);
gtk_object_set_data(GTK_OBJECT(completion_window),
WINDOW_DATA_COMPL_CLIST, clist);
gtk_signal_connect(GTK_OBJECT(clist), "select_row",
GTK_SIGNAL_FUNC(completion_window_select_row),
&completion_window);
for (count = 0; count < get_completion_count(); count++) {
gchar *text[] = {NULL, NULL};
text[0] = get_complete_address(count);
gtk_clist_append(GTK_CLIST(clist), text);
g_free(text[0]);
}
gdk_window_get_geometry(entry->window, &x, &y, &width, &height, &depth);
gdk_window_get_deskrelative_origin (entry->window, &x, &y);
y += height;
gtk_widget_set_uposition(completion_window, x, y);
gtk_widget_size_request(clist, &r);
gtk_widget_set_usize(completion_window, width, r.height);
gtk_widget_show_all(completion_window);
gtk_widget_size_request(clist, &r);
if ((y + r.height) > gdk_screen_height()) {
gtk_window_set_policy(GTK_WINDOW(completion_window),
TRUE, FALSE, FALSE);
gtk_widget_set_usize(completion_window, width,
gdk_screen_height () - y);
}
gtk_signal_connect(GTK_OBJECT(completion_window),
"button-press-event",
GTK_SIGNAL_FUNC(completion_window_button_press),
&completion_window);
gtk_signal_connect(GTK_OBJECT(completion_window),
"key-press-event",
GTK_SIGNAL_FUNC(completion_window_key_press),
&completion_window);
gdk_pointer_grab(completion_window->window, TRUE,
GDK_POINTER_MOTION_MASK | GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK,
NULL, NULL, GDK_CURRENT_TIME);
gtk_grab_add(completion_window);
/* this gets rid of the irritating focus rectangle that doesn't
* follow the selection */
GTK_WIDGET_UNSET_FLAGS(clist, GTK_CAN_FOCUS);
gtk_clist_select_row(GTK_CLIST(clist), 1, 0);
}
/* row selection sends completed address to entry.
* note: event is NULL if selected by anything else than a mouse button. */
static void completion_window_select_row(GtkCList *clist, gint row, gint col,
GdkEvent *event,
GtkWidget **completion_window)
{
GtkEntry *entry;
g_return_if_fail(completion_window != NULL);
g_return_if_fail(*completion_window != NULL);
entry = GTK_ENTRY(gtk_object_get_data(GTK_OBJECT(*completion_window),
WINDOW_DATA_COMPL_ENTRY));
g_return_if_fail(entry != NULL);
completion_window_apply_selection(clist, entry);
if (!event || event->type != GDK_BUTTON_RELEASE)
return;
clear_completion_cache();
gtk_widget_destroy(*completion_window);
*completion_window = NULL;
}
/* completion_window_button_press() - check is mouse click is anywhere
* else (not in the completion window). in that case the completion
* window is destroyed, and the original prefix is restored */
static gboolean completion_window_button_press(GtkWidget *widget,
GdkEventButton *event,
GtkWidget **completion_window)
{
GtkWidget *event_widget, *entry;
gchar *prefix;
gint cursor_pos;
gboolean restore = TRUE;
g_return_val_if_fail(completion_window != NULL, FALSE);
g_return_val_if_fail(*completion_window != NULL, FALSE);
entry = GTK_WIDGET(gtk_object_get_data(GTK_OBJECT(*completion_window),
WINDOW_DATA_COMPL_ENTRY));
g_return_val_if_fail(entry != NULL, FALSE);
event_widget = gtk_get_event_widget((GdkEvent *)event);
if (event_widget != widget) {
while (event_widget) {
if (event_widget == widget)
return FALSE;
else if (event_widget == entry) {
restore = FALSE;
break;
}
event_widget = event_widget->parent;
}
}
if (restore) {
prefix = get_complete_address(0);
g_free(get_address_from_edit(GTK_ENTRY(entry), &cursor_pos));
replace_address_in_edit(GTK_ENTRY(entry), prefix, cursor_pos);
g_free(prefix);
}
clear_completion_cache();
gtk_widget_destroy(*completion_window);
*completion_window = NULL;
return TRUE;
}
static gboolean completion_window_key_press(GtkWidget *widget,
GdkEventKey *event,
GtkWidget **completion_window)
{
GdkEventKey tmp_event;
GtkWidget *entry;
gchar *prefix;
gint cursor_pos;
GtkWidget *clist;
g_return_val_if_fail(completion_window != NULL, FALSE);
g_return_val_if_fail(*completion_window != NULL, FALSE);
entry = GTK_WIDGET(gtk_object_get_data(GTK_OBJECT(*completion_window),
WINDOW_DATA_COMPL_ENTRY));
clist = GTK_WIDGET(gtk_object_get_data(GTK_OBJECT(*completion_window),
WINDOW_DATA_COMPL_CLIST));
g_return_val_if_fail(entry != NULL, FALSE);
/* allow keyboard navigation in the alternatives clist */
if (event->keyval == GDK_Up || event->keyval == GDK_Down ||
event->keyval == GDK_Page_Up || event->keyval == GDK_Page_Down) {
completion_window_advance_selection
(GTK_CLIST(clist),
event->keyval == GDK_Down ||
event->keyval == GDK_Page_Down ? TRUE : FALSE);
return FALSE;
}
/* also make tab / shift tab go to next previous completion entry. we're
* changing the key value */
if (event->keyval == GDK_Tab || event->keyval == GDK_ISO_Left_Tab) {
event->keyval = (event->state & GDK_SHIFT_MASK)
? GDK_Up : GDK_Down;
/* need to reset shift state if going up */
if (event->state & GDK_SHIFT_MASK)
event->state &= ~GDK_SHIFT_MASK;
completion_window_advance_selection(GTK_CLIST(clist),
event->keyval == GDK_Down ? TRUE : FALSE);
return FALSE;
}
/* look for presses that accept the selection */
if (event->keyval == GDK_Return || event->keyval == GDK_space) {
clear_completion_cache();
gtk_widget_destroy(*completion_window);
*completion_window = NULL;
return FALSE;
}
/* key state keys should never be handled */
if (event->keyval == GDK_Shift_L
|| event->keyval == GDK_Shift_R
|| event->keyval == GDK_Control_L
|| event->keyval == GDK_Control_R
|| event->keyval == GDK_Caps_Lock
|| event->keyval == GDK_Shift_Lock
|| event->keyval == GDK_Meta_L
|| event->keyval == GDK_Meta_R
|| event->keyval == GDK_Alt_L
|| event->keyval == GDK_Alt_R) {
return FALSE;
}
/* other key, let's restore the prefix (orignal text) */
prefix = get_complete_address(0);
g_free(get_address_from_edit(GTK_ENTRY(entry), &cursor_pos));
replace_address_in_edit(GTK_ENTRY(entry), prefix, cursor_pos);
g_free(prefix);
clear_completion_cache();
/* make sure anything we typed comes in the edit box */
tmp_event.type = event->type;
tmp_event.window = entry->window;
tmp_event.send_event = TRUE;
tmp_event.time = event->time;
tmp_event.state = event->state;
tmp_event.keyval = event->keyval;
tmp_event.length = event->length;
tmp_event.string = event->string;
gtk_widget_event(entry, (GdkEvent *)&tmp_event);
/* and close the completion window */
gtk_widget_destroy(*completion_window);
*completion_window = NULL;
return TRUE;
}