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/*
This file is part of anastasis-gtk.
Copyright (C) 2021 Anastasis SARL
Anastasis 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 3, or (at your
option) any later version.
Anastasis 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 Anastasis; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
/**
* @file src/anastasis/anastasis-gtk_autocomplete.c
* @brief Autocomplete logic for GtkEntry widgets
* @author Christian Grothoff
*/
#include <gnunet/platform.h>
#include <gnunet/gnunet_util_lib.h>
#include "anastasis-gtk_attributes.h"
#include "anastasis-gtk_dispatch.h"
#include "anastasis-gtk_helper.h"
#include <jansson.h>
/**
* Lookup autocompletion string for @a editable widget.
*
* @param editable widget to lookup
* @return NULL if not found
*/
static const char *
lookup_autocomplete (GtkEditable *editable)
{
json_t *a;
size_t index;
json_t *ra = json_object_get (AG_redux_state,
"required_attributes");
if (NULL == ra)
{
GNUNET_break (0);
return NULL;
}
json_array_foreach (ra, index, a)
{
const char *widget_name = json_string_value (json_object_get (a,
"widget"));
if (editable ==
GTK_EDITABLE (GCG_get_main_window_object (ai[i].widget_name)))
return json_string_value (json_object_get (a,
"autocomplete"));
}
GNUNET_break (0);
return NULL;
}
/**
* Function called from an auto-completed entry widget up on upon text
* deletion.
*
* @param editable the widget
* @param start_pos starting position
* @param end_pos end position
* @param user_data unused
*/
void
anastasis_gtk_autocomplete_delete_text (GtkEditable *editable,
int start_pos,
int end_pos,
void *user_data)
{
const char *ac;
(void) user_data;
ac = lookup_autocomplete (editable);
if (NULL == ac)
return;
if (0 == start_pos)
return;
#if CONFUSING_UX_DESIRED
if (ac[start_pos] != '?')
{
g_signal_stop_emission_by_name (editable,
"delete-text");
gtk_editable_delete_text (editable,
start_pos - 1,
end_pos);
}
#endif
}
/**
* Function called from an auto-completed widget upon text insertion.
*
* @param editable the widget
* @param new_text inserted text
* @param new_text_length number of bytes in @a new_text
* @param position insertion position
* @param user_data unused
*/
void
anastasis_gtk_autocomplete_insert_text (GtkEditable *editable,
const char *new_text,
int new_text_length,
gpointer position,
void *user_data)
{
const char *ac;
(void) user_data;
gint pos;
char *replacement;
ac = lookup_autocomplete (editable);
if (NULL == ac)
return;
pos = gtk_editable_get_position (editable);
if (strlen (ac) <= pos + new_text_length)
return;
if (ac[pos+new_text_length] != '?')
{
g_signal_stop_emission_by_name (editable,
"insert-text");
GNUNET_asprintf (&replacement,
"%.*s%c",
new_text_length,
new_text,
ac[pos+new_text_length]);
gtk_editable_insert_text (editable,
replacement,
-1,
position);
GNUNET_free (replacement);
}
}
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