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/**
* @file
* Display a dialog to let the user search through results.
*
* @author Jeremy A. Mowery jmowery@tresys.com
* @author Jason Tang jtang@tresys.com
* @author Brandon Whalen bwhalen@tresys.com
* @author Randy Wicks rwicks@tresys.com
*
* Copyright (C) 2005-2007 Tresys Technology, LLC
*
* 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <config.h>
#include "find_dialog.h"
#include "utilgui.h"
#include <assert.h>
#include <errno.h>
#include <stdlib.h>
#include <gdk/gdkkeysyms.h>
#include <glade/glade.h>
struct find_dialog
{
toplevel_t *top;
GladeXML *xml;
/** offset to start searching from if searching up and the
* start of the offset to select from */
gint start_offset;
/** the offset to start searching from if searching down and
* the offset to end selecting from */
gint end_offset;
/** the main window */
GtkDialog *w;
GtkEntry *entry;
GtkRadioButton *forward, *reverse;
};
static void find_dialog_search(find_dialog_t * f)
{
GtkTextView *view = toplevel_get_text_view(f->top);
GtkTextBuffer *tb = gtk_text_view_get_buffer(view);
GtkTextMark *mark = gtk_text_buffer_get_insert(tb);
GtkTextIter iter, start, end;
const gchar *search_text = gtk_entry_get_text(f->entry);
gboolean text_found;
/* if nothing is selected then start the search from the
* cursor. otherwise, if searching forward then start search
* at the end of the selection, else set start to beginning of
* selection */
if (!gtk_text_buffer_get_selection_bounds(tb, &start, &end)) {
gtk_text_buffer_get_iter_at_mark(tb, &iter, mark);
} else {
if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(f->forward))) {
iter = end;
} else {
iter = start;
}
}
if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(f->forward))) {
text_found = gtk_text_iter_forward_search(&iter, search_text, GTK_TEXT_SEARCH_VISIBLE_ONLY, &start, &end, NULL);
if (!text_found) {
/* wrap search */
gtk_text_buffer_get_start_iter(tb, &iter);
text_found =
gtk_text_iter_forward_search(&iter, search_text, GTK_TEXT_SEARCH_VISIBLE_ONLY, &start, &end, NULL);
}
} else {
text_found = gtk_text_iter_backward_search(&iter, search_text, GTK_TEXT_SEARCH_VISIBLE_ONLY, &start, &end, NULL);
if (!text_found) {
/* wrap search */
gtk_text_buffer_get_end_iter(tb, &iter);
text_found =
gtk_text_iter_backward_search(&iter, search_text, GTK_TEXT_SEARCH_VISIBLE_ONLY, &start, &end, NULL);
}
}
if (!text_found) {
GString *string = g_string_new("");
g_string_printf(string, "Text \"%s\" not found.", search_text);
util_message(GTK_WINDOW(f->w), GTK_MESSAGE_INFO, string->str);
g_string_free(string, TRUE);
} else {
gtk_text_view_scroll_to_iter(view, &start, 0.0, FALSE, 0.0, 0.5);
if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(f->forward))) {
gtk_text_buffer_select_range(tb, &end, &start);
} else {
gtk_text_buffer_select_range(tb, &start, &end);
}
}
}
static void find_dialog_on_response(GtkDialog * dialog __attribute__ ((unused)), gint response, gpointer user_data)
{
find_dialog_t *f = (find_dialog_t *) user_data;
if (response == GTK_RESPONSE_CLOSE) {
gtk_widget_hide(GTK_WIDGET(f->w));
} else if (response == GTK_RESPONSE_OK) {
find_dialog_search(f);
}
}
static gboolean find_dialog_on_key_press_event(GtkWidget * widget __attribute__ ((unused)), GdkEventKey * event, gpointer user_data)
{
find_dialog_t *f = (find_dialog_t *) user_data;
if (event->keyval == GDK_Escape) {
gtk_widget_hide(GTK_WIDGET(f->w));
return TRUE;
}
return FALSE;
}
static void find_dialog_on_entry_activate(GtkEntry * entry __attribute__ ((unused)), gpointer user_data)
{
find_dialog_t *f = (find_dialog_t *) user_data;
find_dialog_search(f);
}
find_dialog_t *find_dialog_create(toplevel_t * top)
{
find_dialog_t *f;
int error = 0;
if ((f = calloc(1, sizeof(*f))) == NULL) {
error = errno;
goto cleanup;
}
f->top = top;
f->xml = glade_xml_new(toplevel_get_glade_xml(f->top), "find_dialog", NULL);
f->w = GTK_DIALOG(glade_xml_get_widget(f->xml, "find_dialog"));
assert(f->w != NULL);
gtk_window_set_transient_for(GTK_WINDOW(f->w), toplevel_get_window(f->top));
g_signal_connect_swapped(G_OBJECT(f->w), "delete-event", G_CALLBACK(gtk_widget_hide_on_delete), f->w);
g_signal_connect(G_OBJECT(f->w), "response", G_CALLBACK(find_dialog_on_response), f);
g_signal_connect(G_OBJECT(f->w), "key-press-event", G_CALLBACK(find_dialog_on_key_press_event), f);
f->entry = GTK_ENTRY(glade_xml_get_widget(f->xml, "find entry"));
f->forward = GTK_RADIO_BUTTON(glade_xml_get_widget(f->xml, "find forward radio"));
f->reverse = GTK_RADIO_BUTTON(glade_xml_get_widget(f->xml, "find reverse radio"));
assert(f->entry != NULL && f->forward != NULL && f->reverse != NULL);
/* connect the text entry callback events */
g_signal_connect(G_OBJECT(f->entry), "activate", G_CALLBACK(find_dialog_on_entry_activate), f);
cleanup:
if (error != 0) {
find_dialog_destroy(&f);
errno = error;
return NULL;
}
return f;
}
void find_dialog_destroy(find_dialog_t ** f)
{
if (f != NULL && *f != NULL) {
free(*f);
*f = NULL;
}
}
void find_dialog_show(find_dialog_t * f)
{
gtk_widget_show(GTK_WIDGET(f->w));
gtk_widget_grab_focus(GTK_WIDGET(f->entry));
gtk_editable_set_position(GTK_EDITABLE(f->entry), -1);
gtk_editable_select_region(GTK_EDITABLE(f->entry), 0, -1);
gtk_window_present(GTK_WINDOW(f->w));
}
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