/*
* Copyright (C) 2002 Marco Pesenti Gritti
*
* 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, 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.
*/
#include "ephy-keywords-entry.h"
#include "ephy-marshal.h"
#include "ephy-gobject-misc.h"
#include <gdk/gdkkeysyms.h>
//#define DEBUG_MSG(x) g_print x
#define DEBUG_MSG(x)
#define NOT_IMPLEMENTED g_warning ("not implemented: " G_STRLOC);
/**
* Private data
*/
struct _EphyKeywordsEntryPrivate
{
EphyBookmarks *bookmarks;
};
/**
* Private functions, only availble from this file
*/
static void ephy_keywords_entry_class_init (EphyKeywordsEntryClass *klass);
static void ephy_keywords_entry_init (EphyKeywordsEntry *w);
static void ephy_keywords_entry_finalize_impl (GObject *o);
static gint ephy_keywords_entry_key_press (GtkWidget *widget,
GdkEventKey *event);
enum
{
KEYWORDS_CHANGED,
LAST_SIGNAL
};
static GObjectClass *parent_class = NULL;
static guint keywords_entry_signals[LAST_SIGNAL] = { 0 };
MAKE_GET_TYPE (ephy_keywords_entry, "EphyKeywordsEntry", EphyKeywordsEntry,
ephy_keywords_entry_class_init,
ephy_keywords_entry_init, GTK_TYPE_ENTRY);
static void
ephy_keywords_entry_class_init (EphyKeywordsEntryClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class;
parent_class = g_type_class_peek_parent (class);
widget_class = (GtkWidgetClass*) class;
gobject_class->finalize = ephy_keywords_entry_finalize_impl;
widget_class->key_press_event = ephy_keywords_entry_key_press;
keywords_entry_signals[KEYWORDS_CHANGED] =
g_signal_new ("keywords_changed",
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (EphyKeywordsEntryClass, keywords_changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE,
0);
}
static void
try_to_expand_keyword (GtkEditable *editable)
{
char *entry_text;
char *user_text;
const char *expand_text;
char *insert_text;
int user_text_length;
int expand_text_length;
int keyword_offset = 0;
int tmp;
EphyKeywordsEntry *entry = EPHY_KEYWORDS_ENTRY (editable);
EphyNode *node;
entry_text = gtk_editable_get_chars (editable, 0, -1);
g_return_if_fail (entry_text != NULL);
DEBUG_MSG (("Entry text \"%s\"\n", entry_text));
user_text = g_utf8_strrchr (entry_text, -1, ' ');
if (user_text)
{
user_text = g_utf8_find_next_char (user_text, NULL);
keyword_offset = g_utf8_pointer_to_offset
(entry_text, user_text);
}
else
{
user_text = entry_text;
}
DEBUG_MSG (("User text \"%s\"\n", user_text));
node = ephy_bookmarks_find_keyword (entry->priv->bookmarks,
user_text, TRUE);
if (node)
{
expand_text = ephy_node_get_property_string
(node, EPHY_NODE_KEYWORD_PROP_NAME);
DEBUG_MSG (("Expand text %s\n", expand_text));
expand_text_length = g_utf8_strlen (expand_text, -1);
user_text_length = g_utf8_strlen (user_text, -1);
insert_text = g_utf8_offset_to_pointer (expand_text, user_text_length);
gtk_editable_insert_text (editable,
insert_text,
g_utf8_strlen (insert_text, -1),
&tmp);
gtk_editable_select_region (editable, user_text_length + keyword_offset, -1);
}
else
{
DEBUG_MSG (("No expansion.\n"));
}
g_free (entry_text);
}
/* Until we have a more elegant solution, this is how we figure out if
* the GtkEntry inserted characters, assuming that the return value is
* TRUE indicating that the GtkEntry consumed the key event for some
* reason. This is a clone of code from GtkEntry.
*/
static gboolean
entry_would_have_inserted_characters (const GdkEventKey *event)
{
switch (event->keyval) {
case GDK_BackSpace:
case GDK_Clear:
case GDK_Insert:
case GDK_Delete:
case GDK_Home:
case GDK_End:
case GDK_Left:
case GDK_Right:
case GDK_Return:
return FALSE;
default:
if (event->keyval >= 0x20 && event->keyval <= 0xFF) {
if ((event->state & GDK_CONTROL_MASK) != 0) {
return FALSE;
}
if ((event->state & GDK_MOD1_MASK) != 0) {
return FALSE;
}
}
return event->length > 0;
}
}
static int
get_editable_number_of_chars (GtkEditable *editable)
{
char *text;
int length;
text = gtk_editable_get_chars (editable, 0, -1);
length = g_utf8_strlen (text, -1);
g_free (text);
return length;
}
static void
set_position_and_selection_to_end (GtkEditable *editable)
{
int end;
end = get_editable_number_of_chars (editable);
gtk_editable_select_region (editable, end, end);
gtk_editable_set_position (editable, end);
}
static gboolean
position_and_selection_are_at_end (GtkEditable *editable)
{
int end;
int start_sel, end_sel;
end = get_editable_number_of_chars (editable);
if (gtk_editable_get_selection_bounds (editable, &start_sel, &end_sel))
{
if (start_sel != end || end_sel != end)
{
return FALSE;
}
}
return gtk_editable_get_position (editable) == end;
}
static gint
ephy_keywords_entry_key_press (GtkWidget *widget,
GdkEventKey *event)
{
GtkEditable *editable;
GdkEventKey *keyevent;
EphyKeywordsEntry *entry;
gboolean result;
entry = EPHY_KEYWORDS_ENTRY (widget);
editable = GTK_EDITABLE (entry);
keyevent = (GdkEventKey *)event;
/* After typing the right arrow key we move the selection to
* the end, if we have a valid selection - since this is most
* likely an auto-completion. We ignore shift / control since
* they can validly be used to extend the selection.
*/
if ((keyevent->keyval == GDK_Right || keyevent->keyval == GDK_End) &&
!(keyevent->state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK)) &&
gtk_editable_get_selection_bounds (editable, NULL, NULL))
{
set_position_and_selection_to_end (editable);
}
result = GTK_WIDGET_CLASS (parent_class)->key_press_event (widget, event);
/* Only do expanding when we are typing at the end of the
* text.
*/
if (entry_would_have_inserted_characters (event)
&& position_and_selection_are_at_end (editable))
{
try_to_expand_keyword (editable);
}
g_signal_emit (G_OBJECT (entry), keywords_entry_signals[KEYWORDS_CHANGED], 0);
return result;
}
static void
ephy_keywords_entry_init (EphyKeywordsEntry *w)
{
w->priv = g_new0 (EphyKeywordsEntryPrivate, 1);
w->priv->bookmarks = NULL;
}
static void
ephy_keywords_entry_finalize_impl (GObject *o)
{
EphyKeywordsEntry *w = EPHY_KEYWORDS_ENTRY (o);
EphyKeywordsEntryPrivate *p = w->priv;
g_free (p);
G_OBJECT_CLASS (parent_class)->finalize (o);
}
GtkWidget *
ephy_keywords_entry_new (void)
{
return GTK_WIDGET (g_object_new (EPHY_TYPE_LOCATION_ENTRY, NULL));
}
void
ephy_keywords_entry_set_bookmarks (EphyKeywordsEntry *w,
EphyBookmarks *bookmarks)
{
w->priv->bookmarks = bookmarks;
}
