path: root/widgets/misc/e-cell-renderer-combo.c

/*
 * This program 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) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *      Mike Kestner  <mkestner@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "e-combo-cell-editable.h"
#include "e-cell-renderer-combo.h"

enum {
    PROP_0,
    PROP_LIST
};

struct _ECellRendererComboPriv {
    EComboCellEditable *editable;
    gchar *path;
    GList *list;
};

G_DEFINE_TYPE (
    ECellRendererCombo,
    e_cell_renderer_combo,
    GTK_TYPE_CELL_RENDERER_TEXT)

static void
ecrc_editing_done (GtkCellEditable *editable, ECellRendererCombo *cell)
{
    const gchar *new_text;

    if (e_combo_cell_editable_cancelled (E_COMBO_CELL_EDITABLE (editable)))
        return;

    new_text = e_combo_cell_editable_get_text (E_COMBO_CELL_EDITABLE (editable));

    g_signal_emit_by_name (cell, "edited", cell->priv->path, new_text);
    g_free (cell->priv->path);
    cell->priv->path = NULL;
}

static GtkCellEditable *
ecrc_start_editing (GtkCellRenderer *cell, GdkEvent *event, GtkWidget *widget, const gchar *path,
            const GdkRectangle *bg_area, const GdkRectangle *cell_area, GtkCellRendererState flags)
{
    ECellRendererCombo *combo_cell = E_CELL_RENDERER_COMBO (cell);
    GtkCellRendererText *text_cell = GTK_CELL_RENDERER_TEXT (cell);
    EComboCellEditable *editable;
    gboolean is_editable;
    gchar *text;

    g_object_get (text_cell, "editable", &is_editable, NULL);

    if (!is_editable)
        return NULL;

    g_object_get (text_cell, "text", &text, NULL);

    editable = E_COMBO_CELL_EDITABLE (e_combo_cell_editable_new ());
    e_combo_cell_editable_set_text (editable, text);
    e_combo_cell_editable_set_list (editable, combo_cell->priv->list);
    gtk_widget_show (GTK_WIDGET (editable));

    g_free (text);

    g_signal_connect (editable, "editing-done", G_CALLBACK (ecrc_editing_done), combo_cell);

    combo_cell->priv->editable = g_object_ref (editable);
    combo_cell->priv->path = g_strdup (path);

    return GTK_CELL_EDITABLE (editable);
}

static void
ecrc_get_size (GtkCellRenderer *cell, GtkWidget *widget, const GdkRectangle *cell_area,
           gint *x_offset, gint *y_offset, gint *width, gint *height)
{
    GtkWidget *btn;
    GtkRequisition req;

    if (GTK_CELL_RENDERER_CLASS (e_cell_renderer_combo_parent_class)->get_size)
        GTK_CELL_RENDERER_CLASS (e_cell_renderer_combo_parent_class)->get_size (cell, widget, cell_area, x_offset, y_offset, width, height);

    btn = gtk_button_new ();
    gtk_container_add (GTK_CONTAINER (btn), gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_NONE));
    gtk_widget_get_preferred_size (btn, &req, NULL);
    *width += req.width;
    gtk_widget_destroy (btn);
}

static void
ecrc_get_prop (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
    ECellRendererCombo *ecrc = E_CELL_RENDERER_COMBO (object);

    switch (prop_id) {
    case PROP_LIST:
        g_value_set_pointer (value, ecrc->priv->list);
        break;
    default:
        break;
    }
}

static void
ecrc_set_prop (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
    ECellRendererCombo *ecrc = E_CELL_RENDERER_COMBO (object);

    switch (prop_id) {
    case PROP_LIST:
        ecrc->priv->list = g_value_get_pointer (value);
        break;
    default:
        break;
    }
}

static void
ecrc_finalize (GObject *object)
{
    ECellRendererCombo *cell = (ECellRendererCombo *) object;

    if (cell->priv->editable)
        g_object_unref (cell->priv->editable);
    cell->priv->editable = NULL;

    if (cell->priv->path)
        g_free (cell->priv->path);
    cell->priv->path = NULL;

    g_free (cell->priv);

    /* Chain up to parent's finalize() method. */
    G_OBJECT_CLASS (e_cell_renderer_combo_parent_class)->finalize (object);
}

static void
e_cell_renderer_combo_init (ECellRendererCombo *cell)
{
    cell->priv = g_new0 (ECellRendererComboPriv, 1);
}

static void
e_cell_renderer_combo_class_init (ECellRendererComboClass *class)
{
    GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS (class);
    GObjectClass *obj_class = G_OBJECT_CLASS (class);

    obj_class->get_property = ecrc_get_prop;
    obj_class->set_property = ecrc_set_prop;
    obj_class->finalize = ecrc_finalize;

    cell_class->start_editing = ecrc_start_editing;
    cell_class->get_size = ecrc_get_size;

    g_object_class_install_property (obj_class, PROP_LIST,
                     g_param_spec_pointer ("list", "List", "List of items to popup.", G_PARAM_READWRITE));
}

GtkCellRenderer *
e_cell_renderer_combo_new (void)
{
    return GTK_CELL_RENDERER (g_object_new (E_TYPE_CELL_RENDERER_COMBO, NULL));
}