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Add a combo box cell renderer.

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This commit is contained in:
Matthias Clasen
2004-07-16 20:27:40 +00:00
parent d8df361813
commit c0af1c1aaa
13 changed files with 867 additions and 45 deletions
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gtk/gtkcellrenderercombo.c Normal file
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/* GtkCellRendererCombo
* Copyright (C) 2004 Lorenzo Gil Sanchez
*
* 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <string.h>
#include "gtkintl.h"
#include "gtkbin.h"
#include "gtkentry.h"
#include "gtkcelllayout.h"
#include "gtkcellrenderercombo.h"
#include "gtkcellrenderertext.h"
#include "gtkcombobox.h"
#include "gtkcomboboxentry.h"
static void gtk_cell_renderer_combo_class_init (GtkCellRendererComboClass *klass);
static void gtk_cell_renderer_combo_init (GtkCellRendererCombo *self);
static void gtk_cell_renderer_combo_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_cell_renderer_combo_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static GtkCellEditable *gtk_cell_renderer_combo_start_editing (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
const gchar *path,
GdkRectangle *background_area,
GdkRectangle *cell_area,
GtkCellRendererState flags);
enum {
PROP_0,
PROP_MODEL,
PROP_TEXT_COLUMN,
PROP_HAS_ENTRY
};
static GObjectClass *parent_class = NULL;
#define GTK_CELL_RENDERER_COMBO_PATH "gtk-cell-renderer-combo-path"
GType
gtk_cell_renderer_combo_get_type (void)
{
static GType gtk_cell_renderer_combo_type = 0;
if (!gtk_cell_renderer_combo_type)
{
static const GTypeInfo gtk_cell_renderer_combo_info =
{
sizeof (GtkCellRendererComboClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gtk_cell_renderer_combo_class_init,
NULL,
NULL,
sizeof (GtkCellRendererCombo),
0,
(GInstanceInitFunc) gtk_cell_renderer_combo_init
};
gtk_cell_renderer_combo_type =
g_type_register_static (GTK_TYPE_CELL_RENDERER_TEXT,
"GtkCellRendererCombo",
&gtk_cell_renderer_combo_info,
0);
}
return gtk_cell_renderer_combo_type;
}
static void
gtk_cell_renderer_combo_class_init (GtkCellRendererComboClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->get_property = gtk_cell_renderer_combo_get_property;
object_class->set_property = gtk_cell_renderer_combo_set_property;
cell_class->start_editing = gtk_cell_renderer_combo_start_editing;
/**
* GtkCellRendererCombo:model:
*
* The :model property holds a tree model containing the possible
* values for the combo box. Use the :text_column property to specify
* the column holding the values.
*
* Since: 2.6
*/
g_object_class_install_property (object_class,
PROP_MODEL,
g_param_spec_object ("model",
P_("Model"),
P_("The model containing the possible values for the combo box"),
GTK_TYPE_TREE_MODEL,
G_PARAM_READWRITE));
/**
* GtkCellRendererCombo:text_column:
*
* The :text_column property specifies the model column which
* holds the possible values for the combo box. Note that this
* refers to the model specified in the :model property,
* <emphasis>not</emphasis> the model backing the tree view to
* which this cell renderer is attached.
*
* Since: 2.6
*/
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));
/**
* GtkCellRendererCombo:has_entry:
*
* If the :has_entry property is %TRUe, the cell renderer will
* include an entry and allow to enter values other than the ones
* in the popup list.
*
* Since: 2.6
*/
g_object_class_install_property (object_class,
PROP_HAS_ENTRY,
g_param_spec_boolean ("has_entry",
P_("Has Entry"),
P_("If %FALSE, don't allow to enter strings other than the chosen ones"),
TRUE,
G_PARAM_READWRITE));
}
static void
gtk_cell_renderer_combo_init (GtkCellRendererCombo *self)
{
self->model = NULL;
self->text_column = -1;
self->focus_out_id = 0;
}
/**
* gtk_cell_renderer_combo_new:
*
* Creates a new #GtkCellRendererCombo
* Adjust how text is drawn using object properties.
* Object properties can be set globally (with g_object_set()).
* Also, with #GtkTreeViewColumn, you can bind a property to a value
* in a #GtkTreeModel. For example, you can bind the "text" property
* on the cell renderer to a string value in the model, thus rendering
* a different string in each row of the #GtkTreeView.
*
* Returns: the new cell renderer
*
* Since: 2.6
*/
GtkCellRenderer *
gtk_cell_renderer_combo_new (void)
{
return g_object_new (GTK_TYPE_CELL_RENDERER_COMBO, NULL);
}
static void
gtk_cell_renderer_combo_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkCellRendererCombo *cell;
g_return_if_fail (GTK_IS_CELL_RENDERER_COMBO (object));
cell = GTK_CELL_RENDERER_COMBO (object);
switch (prop_id)
{
case PROP_MODEL:
g_value_set_object (value, cell->model);
break;
case PROP_TEXT_COLUMN:
g_value_set_int (value, cell->text_column);
break;
case PROP_HAS_ENTRY:
g_value_set_boolean (value, cell->has_entry);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
gtk_cell_renderer_combo_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkCellRendererCombo *cell;
g_return_if_fail (GTK_IS_CELL_RENDERER_COMBO (object));
cell = GTK_CELL_RENDERER_COMBO (object);
switch (prop_id)
{
case PROP_MODEL:
cell->model = g_value_get_object (value);
break;
case PROP_TEXT_COLUMN:
cell->text_column = g_value_get_int (value);
break;
case PROP_HAS_ENTRY:
cell->has_entry = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
gtk_cell_renderer_combo_editing_done (GtkCellEditable *combo,
gpointer data)
{
const gchar *path;
gchar *new_text = NULL;
GtkTreeModel *model;
GtkTreeIter iter;
GtkCellRendererCombo *cell;
GtkEntry *entry;
cell = GTK_CELL_RENDERER_COMBO (data);
if (cell->focus_out_id > 0)
{
g_signal_handler_disconnect (combo, cell->focus_out_id);
cell->focus_out_id = 0;
}
if (_gtk_combo_box_editing_canceled (GTK_COMBO_BOX (combo)))
{
gtk_cell_renderer_editing_canceled (GTK_CELL_RENDERER (data));
return;
}
if (GTK_IS_COMBO_BOX_ENTRY (combo))
{
entry = GTK_ENTRY (gtk_bin_get_child (GTK_BIN (combo)));
new_text = g_strdup (gtk_entry_get_text (entry));
}
else
{
model = gtk_combo_box_get_model (GTK_COMBO_BOX (combo));
if (gtk_combo_box_get_active_iter (GTK_COMBO_BOX (combo), &iter))
gtk_tree_model_get (model, &iter, cell->text_column, &new_text, -1);
}
path = g_object_get_data (G_OBJECT (combo), GTK_CELL_RENDERER_COMBO_PATH);
g_signal_emit_by_name (cell, "edited", path, new_text);
g_free (new_text);
}
static gboolean
gtk_cell_renderer_combo_focus_out_event (GtkWidget *widget,
GdkEvent *event,
gpointer data)
{
gtk_cell_renderer_combo_editing_done (GTK_CELL_EDITABLE (widget), data);
return FALSE;
}
typedef struct
{
GtkCellRendererCombo *cell;
gboolean found;
GtkTreeIter iter;
} SearchData;
static gboolean
find_text (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data)
{
SearchData *search_data = (SearchData *)data;
gchar *text;
gtk_tree_model_get (model, iter, search_data->cell->text_column, &text, -1);
if (text && GTK_CELL_RENDERER_TEXT (search_data->cell)->text &&
strcmp (text, GTK_CELL_RENDERER_TEXT (search_data->cell)->text) == 0)
{
search_data->iter = *iter;
search_data->found = TRUE;
}
return search_data->found;
}
static GtkCellEditable *
gtk_cell_renderer_combo_start_editing (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
const gchar *path,
GdkRectangle *background_area,
GdkRectangle *cell_area,
GtkCellRendererState flags)
{
GtkCellRendererCombo *cell_combo;
GtkCellRendererText *cell_text;
GtkWidget *combo;
SearchData search_data;
cell_text = GTK_CELL_RENDERER_TEXT (cell);
if (cell_text->editable == FALSE)
return NULL;
cell_combo = GTK_CELL_RENDERER_COMBO (cell);
if (cell_combo->model == NULL || cell_combo->text_column < 0)
return NULL;
if (cell_combo->has_entry)
{
combo = gtk_combo_box_entry_new_with_model (cell_combo->model, cell_combo->text_column);
if (cell_text->text)
gtk_entry_set_text (GTK_ENTRY (GTK_BIN (combo)->child),
cell_text->text);
}
else
{
cell = gtk_cell_renderer_text_new ();
combo = gtk_combo_box_new_with_model (cell_combo->model);
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo), cell, TRUE);
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo),
cell, "text", cell_combo->text_column,
NULL);
/* determine the current value */
search_data.cell = cell_combo;
search_data.found = FALSE;
gtk_tree_model_foreach (cell_combo->model, find_text, &search_data);
if (search_data.found)
gtk_combo_box_set_active_iter (combo, &(search_data.iter));
}
g_object_set (combo, "has_frame", FALSE, NULL);
g_object_set_data_full (G_OBJECT (combo),
GTK_CELL_RENDERER_COMBO_PATH,
g_strdup (path), g_free);
gtk_widget_show (combo);
g_signal_connect (GTK_CELL_EDITABLE (combo), "editing_done",
G_CALLBACK (gtk_cell_renderer_combo_editing_done),
cell_combo);
cell_combo->focus_out_id =
g_signal_connect (combo, "focus_out_event",
G_CALLBACK (gtk_cell_renderer_combo_focus_out_event),
cell_combo);
return GTK_CELL_EDITABLE (combo);
}