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/* GTK - The GIMP Toolkit
* Copyright (C) 2012 Red Hat, Inc.
*
* Authors:
* - Bastien Nocera <bnocera@redhat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Modified by the GTK+ Team and others 2012. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include "gtksearchentry.h"
/**
* SECTION:gtksearchentry
* @Short_description: An entry which shows a search icon
* @Title: GtkSearchEntry
*
* #GtkSearchEntry is a subclass of #GtkEntry that has
* been tailored for use as a search entry.
*
* It will show an inactive symbolic "find" icon when the
* search entry is empty, and a symbolic "clear" icon when
* there is text. Clicking on the "clear" icon will empty
* the search entry.
*
* Note that the search/clear icon is shown using a secondary
* icon, and thus does not work if you are using the secondary
* icon position for some other purpose.
*
* Since: 3.6
*/
G_DEFINE_TYPE (GtkSearchEntry, gtk_search_entry, GTK_TYPE_ENTRY)
typedef struct {
guint delayed_changed_id;
gboolean in_timeout;
} GtkSearchEntryPrivate;
/* 150 mseconds of delay */
#define DELAYED_TIMEOUT_ID 150
/* This widget got created without a private structure, meaning
* that we cannot now have one without breaking ABI */
#define GET_PRIV(e) G_TYPE_INSTANCE_GET_PRIVATE (e, GTK_TYPE_SEARCH_ENTRY, GtkSearchEntryPrivate)
static void
gtk_search_entry_finalize (GObject *object)
{
GtkSearchEntryPrivate *priv = GET_PRIV (object);
if (priv->delayed_changed_id > 0)
g_source_remove (priv->delayed_changed_id);
G_OBJECT_CLASS (gtk_search_entry_parent_class)->finalize (object);
}
static void
gtk_search_entry_class_init (GtkSearchEntryClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gtk_search_entry_finalize;
g_type_class_add_private (klass, sizeof (GtkSearchEntryPrivate));
}
static void
search_entry_clear_cb (GtkEntry *entry,
gpointer user_data)
{
gtk_entry_set_text (entry, "");
}
static gboolean
gtk_search_entry_changed_timeout_cb (gpointer user_data)
{
GtkSearchEntry *entry = user_data;
GtkSearchEntryPrivate *priv = GET_PRIV (entry);
priv->in_timeout = TRUE;
g_signal_emit_by_name (entry, "changed");
priv->delayed_changed_id = 0;
priv->in_timeout = FALSE;
return G_SOURCE_REMOVE;
}
static void
reset_timeout (GtkSearchEntry *entry)
{
GtkSearchEntryPrivate *priv = GET_PRIV (entry);
if (priv->delayed_changed_id > 0)
g_source_remove (priv->delayed_changed_id);
priv->delayed_changed_id = g_timeout_add (DELAYED_TIMEOUT_ID,
gtk_search_entry_changed_timeout_cb,
entry);
}
static void
search_entry_changed_cb (GtkSearchEntry *entry,
gpointer user_data)
{
GtkSearchEntryPrivate *priv = GET_PRIV (entry);
const char *str, *icon_name;
gboolean active;
gboolean cleared = FALSE;
/* Update the icons first */
str = gtk_entry_get_text (GTK_ENTRY (entry));
if (str == NULL || *str == '\0')
{
icon_name = NULL;
active = FALSE;
cleared = TRUE;
}
else
{
if (gtk_widget_get_direction (GTK_WIDGET (entry)) == GTK_TEXT_DIR_RTL)
icon_name = "edit-clear-rtl-symbolic";
else
icon_name = "edit-clear-symbolic";
active = TRUE;
}
g_object_set (entry,
"secondary-icon-name", icon_name,
"secondary-icon-activatable", active,
"secondary-icon-sensitive", active,
NULL);
/* Don't stop the emission if it's the timeout
* emitting the signal, otherwise we'll get in a loop */
if (priv->in_timeout)
return;
/* Don't emit the signal in a timeout if we've cleared
* the entry, we don't want a delay */
if (cleared)
return;
/* Queue up the timeout */
reset_timeout (entry);
g_signal_stop_emission_by_name (entry, "changed");
}
static void
gtk_search_entry_init (GtkSearchEntry *entry)
{
g_signal_connect (entry, "changed",
G_CALLBACK (search_entry_changed_cb), NULL);
g_signal_connect (entry, "icon-release",
G_CALLBACK (search_entry_clear_cb), NULL);
g_object_set (entry,
"primary-icon-name", "edit-find-symbolic",
"primary-icon-activatable", FALSE,
"primary-icon-sensitive", FALSE,
NULL);
}
/**
* gtk_search_entry_new:
*
* Creates a #GtkSearchEntry, with a find icon when the search field is
* empty, and a clear icon when it isn't.
*
* Return value: a new #GtkSearchEntry
*
* Since: 3.6
*/
GtkWidget *
gtk_search_entry_new (void)
{
return GTK_WIDGET (g_object_new (GTK_TYPE_SEARCH_ENTRY, NULL));
}
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