gtk2/gtk/gtkcomboboxentry.c

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/* gtkcomboboxentry.c
* Copyright (C) 2002, 2003 Kristian Rietveld <kris@gtk.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "gtkcomboboxentry.h"
#include "gtkcelllayout.h"
#include "gtkentry.h"
#include "gtkcellrenderertext.h"
#include "gtkintl.h"
#define GTK_COMBO_BOX_ENTRY_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_COMBO_BOX_ENTRY, GtkComboBoxEntryPrivate))
struct _GtkComboBoxEntryPrivate
{
GtkWidget *entry;
GtkCellRenderer *text_renderer;
gint text_column;
};
static void gtk_combo_box_entry_class_init (GtkComboBoxEntryClass *klass);
static void gtk_combo_box_entry_init (GtkComboBoxEntry *entry_box);
static void gtk_combo_box_entry_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_combo_box_entry_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_combo_box_entry_active_changed (GtkComboBox *combo_box,
gpointer user_data);
static void gtk_combo_box_entry_contents_changed (GtkEntry *entry,
gpointer user_data);
enum
{
PROP_0,
PROP_TEXT_COLUMN
};
GType
gtk_combo_box_entry_get_type (void)
{
static GType combo_box_entry_type = 0;
if (!combo_box_entry_type)
{
static const GTypeInfo combo_box_entry_info =
{
sizeof (GtkComboBoxEntryClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_combo_box_entry_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkComboBoxEntry),
0,
(GInstanceInitFunc) gtk_combo_box_entry_init
};
combo_box_entry_type = g_type_register_static (GTK_TYPE_COMBO_BOX,
"GtkComboBoxEntry",
&combo_box_entry_info,
0);
}
return combo_box_entry_type;
}
static void
gtk_combo_box_entry_class_init (GtkComboBoxEntryClass *klass)
{
GObjectClass *object_class;
object_class = (GObjectClass *)klass;
object_class->set_property = gtk_combo_box_entry_set_property;
object_class->get_property = gtk_combo_box_entry_get_property;
g_object_class_install_property (object_class,
PROP_TEXT_COLUMN,
g_param_spec_int ("text_column",
P_("Text Column"),
P_("A column in the data source model to get the strings from"),
-1,
G_MAXINT,
-1,
G_PARAM_READWRITE));
g_type_class_add_private ((GObjectClass *) klass,
sizeof (GtkComboBoxEntryPrivate));
}
static void
gtk_combo_box_entry_init (GtkComboBoxEntry *entry_box)
{
entry_box->priv = GTK_COMBO_BOX_ENTRY_GET_PRIVATE (entry_box);
entry_box->priv->text_column = -1;
entry_box->priv->entry = gtk_entry_new ();
gtk_container_add (GTK_CONTAINER (entry_box), entry_box->priv->entry);
gtk_widget_show (entry_box->priv->entry);
entry_box->priv->text_renderer = gtk_cell_renderer_text_new ();
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (entry_box),
entry_box->priv->text_renderer, TRUE);
gtk_combo_box_set_active (GTK_COMBO_BOX (entry_box), -1);
g_signal_connect (entry_box->priv->entry, "changed",
G_CALLBACK (gtk_combo_box_entry_contents_changed),
entry_box);
g_signal_connect (entry_box, "changed",
G_CALLBACK (gtk_combo_box_entry_active_changed), NULL);
}
static void
gtk_combo_box_entry_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkComboBoxEntry *entry_box = GTK_COMBO_BOX_ENTRY (object);
switch (prop_id)
{
case PROP_TEXT_COLUMN:
gtk_combo_box_entry_set_text_column (entry_box,
g_value_get_int (value));
break;
default:
break;
}
}
static void
gtk_combo_box_entry_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkComboBoxEntry *entry_box = GTK_COMBO_BOX_ENTRY (object);
switch (prop_id)
{
case PROP_TEXT_COLUMN:
g_value_set_int (value, entry_box->priv->text_column);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_combo_box_entry_active_changed (GtkComboBox *combo_box,
gpointer user_data)
{
gint index;
GtkComboBoxEntry *entry_box = GTK_COMBO_BOX_ENTRY (combo_box);
index = gtk_combo_box_get_active (combo_box);
g_signal_handlers_block_by_func (entry_box->priv->entry,
gtk_combo_box_entry_contents_changed,
combo_box);
if (index >= 0)
{
gchar *str = NULL;
GtkTreeIter iter;
GtkTreeModel *model;
model = gtk_combo_box_get_model (combo_box);
gtk_tree_model_iter_nth_child (model, &iter, NULL, index);
gtk_tree_model_get (model, &iter,
entry_box->priv->text_column, &str,
-1);
gtk_entry_set_text (GTK_ENTRY (entry_box->priv->entry), str);
g_free (str);
}
g_signal_handlers_unblock_by_func (entry_box->priv->entry,
gtk_combo_box_entry_contents_changed,
combo_box);
}
static void
gtk_combo_box_entry_contents_changed (GtkEntry *entry,
gpointer user_data)
{
GtkComboBox *combo_box = GTK_COMBO_BOX (user_data);
g_signal_handlers_block_by_func (combo_box,
gtk_combo_box_entry_active_changed,
NULL);
gtk_combo_box_set_active (combo_box, -1);
g_signal_handlers_unblock_by_func (combo_box,
gtk_combo_box_entry_active_changed,
NULL);
}
/* public API */
/**
* gtk_combo_box_entry_new:
*
* Creates a new #GtkComboBoxEntry which has a #GtkEntry as child. After
* construction, you should set a model using gtk_combo_box_set_model() and a
* text_column * using gtk_combo_box_entry_set_text_column().
*
* Return value: A new #GtkComboBoxEntry.
*
* Since: 2.4
*/
GtkWidget *
gtk_combo_box_entry_new (void)
{
return GTK_WIDGET (g_object_new (gtk_combo_box_entry_get_type (), NULL));
}
/**
* gtk_combo_box_entry_new_with_model:
* @model: A #GtkTreeModel.
* @text_column: A column in @model to get the strings from.
*
* Creates a new #GtkComboBoxEntry which has a #GtkEntry as child and a list
* of strings as popup. You can get the #GtkEntry from a #GtkComboBoxEntry
* using GTK_ENTRY (GTK_BIN (combo_box_entry)->child). To add and remove
* strings from the list, just modify @model using its data manipulation
* API.
*
* Return value: A new #GtkComboBoxEntry.
*
* Since: 2.4
*/
GtkWidget *
gtk_combo_box_entry_new_with_model (GtkTreeModel *model,
gint text_column)
{
GtkWidget *ret;
g_return_val_if_fail (GTK_IS_TREE_MODEL (model), NULL);
g_return_val_if_fail (text_column >= 0, NULL);
g_return_val_if_fail (text_column < gtk_tree_model_get_n_columns (model), NULL);
ret = g_object_new (gtk_combo_box_entry_get_type (),
"model", model,
"text_column", text_column,
NULL);
return ret;
}
/**
* gtk_combo_box_entry_set_text_column:
* @entry_box: A #GtkComboBoxEntry.
* @text_column: A column in @model to get the strings from.
*
* Sets the model column which @entry_box should use to get strings from
* to be @text_column.
*
* Since: 2.4.
*/
void
gtk_combo_box_entry_set_text_column (GtkComboBoxEntry *entry_box,
gint text_column)
{
g_return_if_fail (text_column >= 0);
g_return_if_fail (text_column < gtk_tree_model_get_n_columns (gtk_combo_box_get_model (GTK_COMBO_BOX (entry_box))));
g_return_if_fail (entry_box->priv->text_column == -1);
entry_box->priv->text_column = text_column;
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (entry_box),
entry_box->priv->text_renderer,
"text", text_column,
NULL);
}
/**
* gtk_combo_box_entry_get_text_column:
* @entry_box: A #GtkComboBoxEntry.
*
* Returns the column which @entry_box is using to get the strings from.
*
* Return value: A column in the data source model of @entry_box.
*
* Since: 2.4
*/
gint
gtk_combo_box_entry_get_text_column (GtkComboBoxEntry *entry_box)
{
g_return_val_if_fail (GTK_IS_COMBO_BOX_ENTRY (entry_box), 0);
return entry_box->priv->text_column;
}