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wireshark/ui/gtk/filter_autocomplete.c

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/* filter_autocomplete.h
* Definitions for filter autocomplete
*
* Copyright 2008, Bahaa Naamneh <b.naamneh@gmail.com>
*
* With several usability improvements:
* Copyright 2008, Stig Bjorlykke <stig@bjorlykke.org>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <string.h>
#include <glib.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#if GTK_CHECK_VERSION(3,0,0)
# include <gdk/gdkkeysyms-compat.h>
#endif
#include <epan/proto.h>
#include "ui/gtk/gui_utils.h"
#include "ui/gtk/filter_autocomplete.h"
#include "ui/gtk/old-gtk-compat.h"
#define E_FILT_AUTOCOMP_TREE_KEY "filter_autocomplete_tree"
static GtkWidget *filter_autocomplete_new(GtkWidget *filter_te, const gchar *protocol_name,
gboolean protocols_only, gboolean *stop_propagation);
static void autocomplete_protocol_string(GtkWidget *filter_te, gchar* selected_str);
static void autoc_filter_row_activated_cb(GtkTreeView *treeview, GtkTreePath *path,
GtkTreeViewColumn *column, gpointer data);
static gboolean filter_te_focus_out_cb(GtkWidget *filter_te, GdkEvent *event, gpointer data);
static void init_autocompletion_list(GtkWidget *list);
static void add_to_autocompletion_list(GtkWidget *list, const gchar *str);
static gboolean autocompletion_list_lookup(GtkWidget *filter_te, GtkWidget *popup_win, GtkWidget *list,
const gchar *str, gboolean *stop_propagation);
static void filter_autocomplete_handle_backspace(GtkWidget *filter_te, GtkWidget *list, GtkWidget *popup_win,
gchar *prefix, GtkWidget *main_win);
static void filter_autocomplete_win_destroy_cb(GtkWidget *win, gpointer data);
static gboolean is_protocol_name_being_typed(GtkWidget *filter_te, int str_len);
/*
* Check if the string at the cursor position is a beginning of a protocol name.
* Possible false positives:
* "NOT" at the beginning of the display filter editable text.
* "NOT" adjacent to another logical operation. (e.g: exp1 AND NOT exp2).
**/
static gboolean
is_protocol_name_being_typed(GtkWidget *filter_te, int str_len)
{
unsigned int i;
int op_len, cursor_pos;
gchar *start;
gchar *pos;
static const gchar *logic_ops[] =
{ "!", "not",
"||", "or",
"&&", "and",
"^^", "xor" };
/* If the cursor is located at the beginning of the filter editable text,
* then it's _probably_ a protocol name.
**/
if(!(cursor_pos = gtk_editable_get_position(GTK_EDITABLE(filter_te))))
return TRUE;
start = gtk_editable_get_chars(GTK_EDITABLE(filter_te), 0, (gint) cursor_pos);
/* Point to one char before the current string in the filter editable text */
pos = start + (cursor_pos - str_len);
/* Walk back through string to find last char which isn't ' ' or '(' */
while(pos > start) {
if(*pos != ' ' && *pos != '(') {
/* Check if we have one of the logical operations */
for(i = 0; i < (sizeof(logic_ops)/sizeof(logic_ops[0])); i++) {
op_len = (int) strlen(logic_ops[i]);
if(pos-start+1 < op_len)
continue;
/* If one of the logical operations is found, then the current string is _probably_ a protocol name */
if(!strncmp(pos-op_len+1, logic_ops[i], op_len)) {
g_free (start);
return TRUE;
}
}
/* If none of the logical operations was found, then the current string is not a protocol */
g_free (start);
return FALSE;
}
pos--;
}
/* The "str" preceded only by ' ' or '(' chars,
* which means that the str is _probably_ a protocol name.
**/
g_free (start);
return TRUE;
}
static void
autocomplete_protocol_string(GtkWidget *filter_te, gchar *selected_str)
{
int pos;
gchar *filter_str;
gchar *pch;
/* Get the current filter string */
pos = gtk_editable_get_position(GTK_EDITABLE(filter_te));
filter_str = gtk_editable_get_chars(GTK_EDITABLE(filter_te), 0, pos);
/* Start from the end */
pch = filter_str + strlen(filter_str);
/* Walk back through string to find last non-punctuation */
while(pch != filter_str) {
pch--;
if(!g_ascii_isalnum(*pch) && (*pch) != '.' && (*pch) != '_' && (*pch) != '-') {
pch++;
break;
}
}
if(strncmp(pch, selected_str, pos-(pch-filter_str))) {
gtk_editable_delete_text(GTK_EDITABLE(filter_te), (gint) (pch-filter_str), pos);
pos = (int) (pch-filter_str);
pch = selected_str;
} else {
pch = (selected_str + strlen(pch));
}
gtk_editable_insert_text(GTK_EDITABLE(filter_te), pch, (gint) strlen(pch), &pos);
gtk_editable_set_position(GTK_EDITABLE(filter_te), pos);
g_free (filter_str);
}
/* On row activated signal, complete the protocol string automatically */
static void
autoc_filter_row_activated_cb(GtkTreeView *treeview,
GtkTreePath *path,
GtkTreeViewColumn *column _U_,
gpointer data)
{
GtkWidget *w_main;
GtkTreeModel *model;
GtkTreeIter iter;
GtkWidget *win;
gchar *proto;
model = gtk_tree_view_get_model(treeview);
if (gtk_tree_model_get_iter(model, &iter, path)) {
gtk_tree_model_get(model, &iter, 0, &proto, -1);
autocomplete_protocol_string(GTK_WIDGET(data), proto);
g_free (proto);
}
w_main = gtk_widget_get_toplevel(GTK_WIDGET(data));
win = (GtkWidget *)g_object_get_data(G_OBJECT(w_main), E_FILT_AUTOCOMP_PTR_KEY);
if(win != NULL) {
gtk_widget_destroy(win);
g_object_set_data(G_OBJECT(w_main), E_FILT_AUTOCOMP_PTR_KEY, NULL);
}
}
static gboolean
filter_te_focus_out_cb(GtkWidget *filter_te _U_,
GdkEvent *event _U_,
gpointer data)
{
GtkWidget *win;
win = (GtkWidget *)g_object_get_data(G_OBJECT(data), E_FILT_AUTOCOMP_PTR_KEY);
if(win != NULL) {
gtk_widget_destroy(win);
g_object_set_data(G_OBJECT(data), E_FILT_AUTOCOMP_PTR_KEY, NULL);
}
return FALSE;
}
static gboolean
check_select_region (GtkWidget *filter_te, GtkWidget *popup_win,
const gchar *string, unsigned int str_len)
{
gint pos1 = gtk_editable_get_position(GTK_EDITABLE(filter_te));
gint pos2 = pos1 + (gint) strlen(string) - str_len;
gint pos3 = pos1;
if (pos2 > pos1) {
gtk_editable_insert_text(GTK_EDITABLE(filter_te), &string[str_len-1],
pos2-pos1+1, &pos3);
gtk_editable_set_position(GTK_EDITABLE(filter_te), pos1+1);
gtk_editable_select_region(GTK_EDITABLE(filter_te), pos1+1, pos2+1);
gtk_widget_hide (popup_win);
return TRUE;
}
return FALSE;
}
static void
init_autocompletion_list(GtkWidget *list)
{
GtkCellRenderer *renderer;
GtkTreeViewColumn *column;
GtkListStore *store;
renderer = gtk_cell_renderer_text_new();
column = gtk_tree_view_column_new_with_attributes(NULL, renderer, "text", 0, NULL);
gtk_tree_view_append_column(GTK_TREE_VIEW(list), column);
gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(list), FALSE);
store = gtk_list_store_new(1, G_TYPE_STRING);
gtk_tree_view_set_model(GTK_TREE_VIEW(list), GTK_TREE_MODEL(store));
g_object_unref(store);
}
static void
add_to_autocompletion_list(GtkWidget *list, const gchar *str)
{
GtkListStore *store;
GtkTreeIter iter;
store = GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW(list)));
gtk_list_store_append(store, &iter);
gtk_list_store_set(store, &iter, 0, str, -1);
}
static gboolean
autocompletion_list_lookup(GtkWidget *filter_te, GtkWidget *popup_win, GtkWidget *list,
const gchar *str, gboolean *stop_propagation)
{
GtkRequisition requisition;
GtkListStore *store;
GtkTreeIter iter;
GtkAllocation popup_win_alloc;
gchar *curr_str;
unsigned int str_len = (unsigned int) strlen(str);
gchar *first = NULL;
gint count = 0;
gboolean loop = TRUE;
gboolean exact_match = FALSE;
store = GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW(list)));
if( gtk_tree_model_get_iter_first(GTK_TREE_MODEL(store), &iter) ) {
do {
gtk_tree_model_get(GTK_TREE_MODEL(store), &iter, 0, &curr_str, -1);
if( !g_ascii_strncasecmp(str, curr_str, str_len) ) {
loop = gtk_tree_model_iter_next(GTK_TREE_MODEL(store), &iter);
if (strlen(curr_str) == str_len) {
exact_match = TRUE;
}
count++;
if (count == 1)
first = g_strdup (curr_str);
} else {
loop = gtk_list_store_remove(store, &iter);
}
g_free(curr_str);
} while( loop );
if (count == 1 && !exact_match && strncmp(str, first, str_len) == 0) {
/* Only one match (not exact) with correct case */
*stop_propagation = check_select_region(filter_te, popup_win, first, str_len);
}
/* Don't show an autocompletion-list with only one entry with exact match */
if ((count == 1 && exact_match && strncmp(str, first, str_len) == 0) ||
!gtk_tree_model_get_iter_first(GTK_TREE_MODEL(store), &iter))
{
g_free (first);
return FALSE;
}
g_free (first);
gtk_tree_view_columns_autosize(GTK_TREE_VIEW(list));
#if GTK_CHECK_VERSION(3,0,0)
gtk_widget_get_preferred_size(list, &requisition, NULL);
#else
gtk_widget_size_request(list, &requisition);
#endif
gtk_widget_get_allocation(popup_win, &popup_win_alloc);
gtk_widget_set_size_request(popup_win, popup_win_alloc.width,
(requisition.height<200? requisition.height+8:200));
gtk_window_resize(GTK_WINDOW(popup_win), popup_win_alloc.width,
(requisition.height<200? requisition.height+8:200));
return TRUE;
}
return FALSE;
}
gboolean
filter_string_te_key_pressed_cb(GtkWidget *filter_te, GdkEventKey *event, gpointer user_data _U_)
{
GtkWidget *popup_win;
GtkWidget *w_toplevel;
GtkWidget *treeview;
GtkTreeModel *model;
GtkTreePath *path;
GtkTreeSelection *selection;
GtkTreeIter iter;
gchar* prefix;
gchar* prefix_start = NULL;
gboolean stop_propagation = FALSE;
guint k;
guint32 ckey = '\0';
gint string_buf_len;
gchar string_buf[6]; /* g_unichar_to_utf8 needs 6 bytes to convert a single
char to a code point. (ISO/IEC 10646 defines this
maximum byte length, RFC 3629 changed this to 4) */
gchar *key_string = NULL;
gint pos;
w_toplevel = gtk_widget_get_toplevel(filter_te);
popup_win = (GtkWidget *)g_object_get_data(G_OBJECT(w_toplevel), E_FILT_AUTOCOMP_PTR_KEY);
k = event->keyval;
if (k != GDK_VoidSymbol) {
ckey = gdk_keyval_to_unicode(k);
string_buf_len = g_unichar_to_utf8(ckey, string_buf);
key_string =
g_locale_from_utf8(string_buf, string_buf_len, NULL, NULL, NULL);
}
if (!key_string)
key_string = g_strdup("");
/* Ignore Ctrl combinations (Ctrl-C, Ctrl-V, Ctrl-Right, ...). */
if (event->state & GDK_CONTROL_MASK)
goto exit;
/* Pressing modifiers such as Shift or Ctrl should not hide the list. */
switch (k) {
case GDK_Shift_L:
case GDK_Shift_R:
case GDK_Control_L:
case GDK_Control_R:
goto exit;
}
if (popup_win)
gtk_widget_show(popup_win);
pos = gtk_editable_get_position(GTK_EDITABLE(filter_te));
if (g_ascii_isalnum(ckey) ||
k == GDK_KP_Decimal || k == GDK_period ||
k == GDK_underscore || k == GDK_minus)
{
/* Ensure we delete the selected text */
gtk_editable_delete_selection(GTK_EDITABLE(filter_te));
} else if (k == GDK_Return || k == GDK_KP_Enter) {
/* Remove selection */
gtk_editable_select_region(GTK_EDITABLE(filter_te), pos, pos);
}
/* get the string from filter_te, start from 0 till cursor's position */
prefix_start = gtk_editable_get_chars(GTK_EDITABLE(filter_te), 0, pos);
/* If the pressed key is non-alphanumeric or one of the keys specified
* in the condition (decimal, period...) then destroy popup window.
**/
if( !g_ascii_isalnum(ckey) &&
k != GDK_KP_Decimal && k != GDK_period &&
k != GDK_underscore && k != GDK_minus &&
k != GDK_space && k != GDK_Return && k != GDK_KP_Enter &&
k != GDK_Page_Down && k != GDK_Down && k != GDK_Page_Up && k != GDK_Up &&
k != GDK_BackSpace)
{
if (popup_win) {
gtk_widget_destroy(popup_win);
g_object_set_data(G_OBJECT(w_toplevel), E_FILT_AUTOCOMP_PTR_KEY, NULL);
}
return FALSE;
}
/* Let prefix points to the first char that is not aphanumeric,'.', '_' or '-',
* start from the end of filter_te_str.
**/
prefix = prefix_start + strlen(prefix_start);
while(prefix != prefix_start) {
prefix--;
if(!g_ascii_isalnum((*prefix)) && (*prefix) != '.' && (*prefix) != '_' && (*prefix) != '-') {
prefix++;
break;
}
}
/* Now, if the pressed key is decimal or period, and there is no period or
* decimal before it in prefix then construct the popup window.
*
* If the pressed key is backspace, and there is no existing popup window
* then construct the popup window again.
**/
if(k==GDK_period || k==GDK_KP_Decimal) {
if( !strchr(prefix, '.') || !popup_win) {
gchar* name_with_period;
if (popup_win) {
gtk_widget_destroy (popup_win);
}
name_with_period = g_strconcat(prefix, key_string, NULL);
popup_win = filter_autocomplete_new(filter_te, name_with_period, FALSE, &stop_propagation);
g_object_set_data(G_OBJECT(w_toplevel), E_FILT_AUTOCOMP_PTR_KEY, popup_win);
g_free(name_with_period);
goto exit;
}
} else if(k==GDK_BackSpace && !popup_win) {
if(strlen(prefix) > 1) {
/* Delete the last character in the prefix string */
prefix[strlen(prefix)-1] = '\0';
if(strchr(prefix, '.')) {
popup_win = filter_autocomplete_new(filter_te, prefix, FALSE, NULL);
g_object_set_data(G_OBJECT(w_toplevel), E_FILT_AUTOCOMP_PTR_KEY, popup_win);
} else if(strlen(prefix) && is_protocol_name_being_typed(filter_te, (int) strlen(prefix)+2)) {
popup_win = filter_autocomplete_new(filter_te, prefix, TRUE, NULL);
g_object_set_data(G_OBJECT(w_toplevel), E_FILT_AUTOCOMP_PTR_KEY, popup_win);
}
}
goto exit;
} else if(g_ascii_isalnum(ckey) && !popup_win) {
gchar *name = g_strconcat(prefix, key_string, NULL);
if( !strchr(name, '.') && is_protocol_name_being_typed(filter_te, (int) strlen(name)) ) {
popup_win = filter_autocomplete_new(filter_te, name, TRUE, &stop_propagation);
g_object_set_data(G_OBJECT(w_toplevel), E_FILT_AUTOCOMP_PTR_KEY, popup_win);
}
g_free(name);
goto exit;
}
/* If the popup window hasn't been constructed yet then we have nothing to do */
if( !popup_win ) {
stop_propagation = FALSE;
goto exit;
}
treeview = (GtkWidget *)g_object_get_data(G_OBJECT(popup_win), E_FILT_AUTOCOMP_TREE_KEY);
selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(treeview));
model = gtk_tree_view_get_model(GTK_TREE_VIEW(treeview));
switch(k)
{
/* a better implementation for UP/DOWN keys would be moving the control to the popup'ed window, and letting
* the treeview handle the up, down actions directly and return the control to the filter text once
* the user press Enter or any key except for UP, DOWN arrows. * I wasn't able to find a way to do that. *
**/
case GDK_Page_Down:
case GDK_Down:
if (gtk_tree_selection_get_selected(selection, &model, &iter)) {
if (gtk_tree_model_iter_next(model, &iter)) {
if (k == GDK_Page_Down) {
/* Skip up to 8 entries */
GtkTreeIter last_iter;
gint count = 0;
do {
last_iter = iter;
} while (++count < 8 && gtk_tree_model_iter_next(model, &iter));
iter = last_iter;
}
gtk_tree_selection_select_iter(GTK_TREE_SELECTION(selection), &iter);
path = gtk_tree_model_get_path(model, &iter);
gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(treeview), path,
NULL, FALSE, 0, 0);
gtk_tree_path_free(path);
} else {
gtk_tree_selection_unselect_all(selection);
}
} else if (gtk_tree_model_get_iter_first(model, &iter)) {
gtk_tree_selection_select_iter(GTK_TREE_SELECTION(selection), &iter);
path = gtk_tree_model_get_path(model, &iter);
gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(treeview), path,
NULL, FALSE, 0, 0);
gtk_tree_path_free(path);
}
/* stop event propagation */
stop_propagation = TRUE;
goto exit;
case GDK_Page_Up:
case GDK_Up:
{
GtkTreeIter last_iter;
if (gtk_tree_selection_get_selected(selection, &model, &iter) ) {
path = gtk_tree_model_get_path(model, &iter);
if (gtk_tree_path_prev(path)) {
if (k == GDK_Page_Up) {
/* Skip up to 8 entries */
GtkTreePath *last_path;
gint count = 0;
do {
last_path = path;
} while (++count < 8 && gtk_tree_path_prev(path));
path = last_path;
}
gtk_tree_selection_select_path(GTK_TREE_SELECTION(selection), path);
gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(treeview), path, NULL, FALSE, 0, 0);
} else {
gtk_tree_selection_unselect_iter(selection, &iter);
}
gtk_tree_path_free(path);
} else if (gtk_tree_model_get_iter_first(model, &iter)) {
do {
last_iter = iter;
} while (gtk_tree_model_iter_next(model, &iter));
gtk_tree_selection_select_iter(GTK_TREE_SELECTION(selection), &last_iter);
path = gtk_tree_model_get_path(model, &last_iter);
gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(treeview), path,
NULL, FALSE, 0, 0);
gtk_tree_path_free(path);
}
/* stop event propagation */
stop_propagation = TRUE;
goto exit;
}
/* if pressed key is Space or Enter then autocomplete protocol string */
case GDK_space:
case GDK_Return:
case GDK_KP_Enter:
if(gtk_tree_selection_get_selected(selection, &model, &iter) ) {
gchar *value;
/* Do not autocomplete protocols with space yet, because we can be in
* a operator or a value field.
**/
if(k != GDK_space || strchr(prefix, '.')) {
/* Use chosen string */
gtk_tree_model_get(model, &iter, 0, &value, -1);
autocomplete_protocol_string(filter_te, value);
g_free(value);
}
if(k != GDK_space) {
stop_propagation = TRUE; /* stop event propagation */
}
}
/* Lose popup */
gtk_widget_destroy(popup_win);
g_object_set_data(G_OBJECT(w_toplevel), E_FILT_AUTOCOMP_PTR_KEY, NULL);
break;
case GDK_BackSpace:
filter_autocomplete_handle_backspace(filter_te, treeview, popup_win, prefix, w_toplevel);
break;
default: {
gchar* updated_str;
updated_str = g_strconcat(prefix, key_string, NULL);
if( !autocompletion_list_lookup(filter_te, popup_win, treeview, updated_str, &stop_propagation) ) {
/* function returned false, ie the list is empty -> close popup */
gtk_widget_destroy(popup_win);
g_object_set_data(G_OBJECT(w_toplevel), E_FILT_AUTOCOMP_PTR_KEY, NULL);
}
g_free(updated_str);
}
}
exit:
g_free(prefix_start);
g_free(key_string);
return stop_propagation;
}
/*
* In my implementation, I'm looking for fields that match the protocol name in the whole fields list
* and not only restrict the process by returning all the fields of the protocol that match the prefix using
* 'proto_get_id_by_filter_name(protocol_name)'; because I have noticed that some of the fields
* have a prefix different than its parent protocol; for example SIP protocol had this field raw_sip.line despite
* that there is a protocol called RAW_SIP which it should be associated with it.
* so the unorganized fields and nonexistent of a standardized protocols and fields naming rules prevent me from
* implementing the autocomplete in an optimized way.
**/
static gboolean
build_autocompletion_list(GtkWidget *filter_te, GtkWidget *treeview, GtkWidget *popup_win,
const gchar *protocol_name, gboolean protocols_only, gboolean *stop_propagation)
{
void *cookie, *cookie2;
protocol_t *protocol;
unsigned int protocol_name_len;
header_field_info *hfinfo;
gint count = 0;
gboolean exact_match = FALSE;
const gchar *first = NULL;
int i;
protocol_name_len = (unsigned int) strlen(protocol_name);
/* Force load protocol fields, if not already done */
if(protocol_name[protocol_name_len-1] == '.')
proto_registrar_get_byname(protocol_name);
/* Walk protocols list */
for (i = proto_get_first_protocol(&cookie); i != -1; i = proto_get_next_protocol(&cookie)) {
protocol = find_protocol_by_id(i);
if (!proto_is_protocol_enabled(protocol))
continue;
if (protocols_only) {
const gchar *name = proto_get_protocol_filter_name (i);
if (!g_ascii_strncasecmp(protocol_name, name, protocol_name_len)) {
add_to_autocompletion_list(treeview, name);
if (strlen(name) == protocol_name_len) {
exact_match = TRUE;
}
count++;
if (count == 1)
first = name;
}
} else {
for (hfinfo = proto_get_first_protocol_field(i, &cookie2);
hfinfo != NULL;
hfinfo = proto_get_next_protocol_field(i, &cookie2))
{
if (hfinfo->same_name_prev_id != -1) /* ignore duplicate names */
continue;
if(!g_ascii_strncasecmp(protocol_name, hfinfo->abbrev, protocol_name_len)) {
add_to_autocompletion_list(treeview, hfinfo->abbrev);
if (strlen(hfinfo->abbrev) == protocol_name_len) {
exact_match = TRUE;
}
count++;
if (count == 1)
first = hfinfo->abbrev;
}
}
}
}
if (count == 1 && !exact_match && stop_propagation &&
strncmp(protocol_name, first, protocol_name_len) == 0)
{
/* Only one match (not exact) with correct case */
*stop_propagation = check_select_region(filter_te, popup_win, first, protocol_name_len);
}
/* Don't show an empty autocompletion-list or
* an autocompletion-list with only one entry with exact match
**/
if (count == 0 || (count == 1 && exact_match &&
strncmp(protocol_name, first, protocol_name_len) == 0))
return FALSE;
return TRUE;
}
static void
filter_autocomplete_disable_sorting(GtkTreeModel *model)
{
gtk_tree_sortable_set_sort_column_id(GTK_TREE_SORTABLE(model),
GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID, GTK_SORT_ASCENDING);
}
static void
filter_autocomplete_enable_sorting(GtkTreeModel *model)
{
gtk_tree_sortable_set_sort_column_id(GTK_TREE_SORTABLE(model), 0, GTK_SORT_ASCENDING);
}
static GtkWidget *
filter_autocomplete_new(GtkWidget *filter_te, const gchar *protocol_name,
gboolean protocols_only, gboolean *stop_propagation)
{
GtkWidget *popup_win;
GtkWidget *treeview;
GtkWidget *filter_sc;
gint x_pos, y_pos;
GtkTreeModel *model;
GtkTreeSelection *selection;
GtkRequisition requisition;
GtkWidget *w_toplevel;
GtkAllocation filter_te_alloc;
w_toplevel = gtk_widget_get_toplevel(filter_te);
/* Create popup window */
popup_win = gtk_window_new (GTK_WINDOW_POPUP);
/* Create scrolled window */
filter_sc = scrolled_window_new(NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (filter_sc), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(filter_sc), GTK_SHADOW_IN);
gtk_container_add(GTK_CONTAINER(popup_win), filter_sc);
/* Create tree view */
treeview = gtk_tree_view_new();
gtk_tree_view_set_hover_selection(GTK_TREE_VIEW(treeview), TRUE);
init_autocompletion_list(treeview);
g_object_set_data(G_OBJECT(popup_win), E_FILT_AUTOCOMP_TREE_KEY, treeview);
/* Build list */
if (!build_autocompletion_list(filter_te, treeview, popup_win, protocol_name, protocols_only, stop_propagation)) {
gtk_widget_destroy(popup_win);
return NULL;
}
/* Sort treeview */
model = gtk_tree_view_get_model(GTK_TREE_VIEW(treeview));
if(model)
filter_autocomplete_enable_sorting(model);
gtk_container_add (GTK_CONTAINER (filter_sc), treeview);
g_signal_connect(treeview, "row-activated", G_CALLBACK(autoc_filter_row_activated_cb), filter_te);
g_signal_connect(filter_te, "focus-out-event", G_CALLBACK(filter_te_focus_out_cb), w_toplevel);
g_signal_connect(popup_win, "destroy", G_CALLBACK(filter_autocomplete_win_destroy_cb), NULL);
#if GTK_CHECK_VERSION(3,0,0)
gtk_widget_get_preferred_size(treeview, &requisition, NULL);
#else
gtk_widget_size_request(treeview, &requisition);
#endif
gtk_widget_get_allocation(filter_te, &filter_te_alloc);
gtk_widget_set_size_request(popup_win, filter_te_alloc.width,
(requisition.height<200? requisition.height+8:200));
gtk_window_resize(GTK_WINDOW(popup_win), filter_te_alloc.width,
(requisition.height<200? requisition.height+8:200));
gdk_window_get_origin(gtk_widget_get_window(filter_te), &x_pos, &y_pos);
#if GTK_CHECK_VERSION(3,0,0)
x_pos += filter_te_alloc.x;
y_pos += (filter_te_alloc.y + filter_te_alloc.height);
#else
y_pos += filter_te_alloc.height;
#endif
gtk_window_move(GTK_WINDOW(popup_win), x_pos, y_pos);
gtk_widget_show_all (popup_win);
selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(treeview));
gtk_tree_selection_unselect_all(selection);
return popup_win;
}
static void
filter_autocomplete_handle_backspace(GtkWidget *filter_te, GtkWidget *list, GtkWidget *popup_win,
gchar *prefix, GtkWidget *main_win)
{
GtkTreeModel *model;
GtkListStore *store;
GtkRequisition requisition;
size_t prefix_len;
gboolean protocols_only = FALSE;
GtkAllocation popup_win_alloc;
prefix_len = strlen(prefix);
if (prefix_len <= 1) {
/* Remove the popup window for protocols */
gtk_widget_destroy(popup_win);
g_object_set_data(G_OBJECT(main_win), E_FILT_AUTOCOMP_PTR_KEY, NULL);
return;
}
/* Delete the last character in the prefix string */
prefix_len--;
prefix[prefix_len] = '\0';
if(strchr(prefix, '.') == NULL) {
protocols_only = TRUE;
}
/* Empty list */
model = gtk_tree_view_get_model(GTK_TREE_VIEW(list));
store = GTK_LIST_STORE(model);
gtk_list_store_clear(store);
/* Disable sorting */
filter_autocomplete_disable_sorting(model);
/* Build new list */
if (!build_autocompletion_list(filter_te, list, popup_win, prefix, protocols_only, NULL)) {
gtk_widget_destroy(popup_win);
g_object_set_data(G_OBJECT(main_win), E_FILT_AUTOCOMP_PTR_KEY, NULL);
return;
}
/* Enable sorting */
filter_autocomplete_enable_sorting(model);
gtk_tree_view_columns_autosize(GTK_TREE_VIEW(list));
#if GTK_CHECK_VERSION(3,0,0)
gtk_widget_get_preferred_size(list, &requisition, NULL);
#else
gtk_widget_size_request(list, &requisition);
#endif
gtk_widget_get_allocation(popup_win, &popup_win_alloc);
/* XXX use gtk_window_set_default_size()? */
gtk_widget_set_size_request(popup_win, popup_win_alloc.width,
(requisition.height<200? requisition.height+8:200));
gtk_window_resize(GTK_WINDOW(popup_win), popup_win_alloc.width,
(requisition.height<200? requisition.height+8:200));
}
static void
filter_autocomplete_win_destroy_cb(GtkWidget *win, gpointer data _U_)
{
/* tell that the autocomplete window doesn't exist anymore */
g_object_set_data(G_OBJECT(win), E_FILT_AUTOCOMP_PTR_KEY, NULL);
}
gboolean
filter_parent_dlg_key_pressed_cb(GtkWidget *win, GdkEventKey *event, gpointer user_data _U_)
{
GtkWidget *popup_win;
popup_win = (GtkWidget *)g_object_get_data(G_OBJECT(win), E_FILT_AUTOCOMP_PTR_KEY);
if(popup_win && event->keyval == GDK_Escape) {
gtk_widget_destroy(popup_win);
g_object_set_data(G_OBJECT(win), E_FILT_AUTOCOMP_PTR_KEY, NULL);
/* stop event propagation */
return TRUE;
}
return FALSE;
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local Variables:
* c-basic-offset: 2
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=2 tabstop=8 expandtab:
* :indentSize=2:tabSize=8:noTabs=true:
*/
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