/*
 * Copyright (C) 2008 Tristan Van Berkom.
 *
 * This library is free software; you can redistribute it and/or it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 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 program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * Authors:
 *   Tristan Van Berkom <tvb@gnome.org>
 */

#include <config.h>
#include <gladeui/glade.h>
#include <glib/gi18n-lib.h>
#include <gdk/gdkkeysyms.h>

#include "glade-text-button.h"


#define GLADE_CELL_RENDERER_BUTTON_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GLADE_TYPE_CELL_RENDERER_BUTTON, GladeTextButtonPrivate))

typedef struct
{
  gchar *button_text;
} GladeTextButtonPrivate;

static void glade_text_button_finalize (GObject * object);

static void glade_text_button_cell_editable_init (GtkCellEditableIface * iface);

static void glade_text_button_grab_focus (GtkWidget * widget);


G_DEFINE_TYPE_WITH_CODE (GladeTextButton, glade_text_button, GTK_TYPE_ALIGNMENT,
                         G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_EDITABLE,
                                                glade_text_button_cell_editable_init));


static void
glade_text_button_class_init (GladeTextButtonClass * klass)
{
  GObjectClass *object_class = G_OBJECT_CLASS (klass);
  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);

  object_class->finalize = glade_text_button_finalize;
  widget_class->grab_focus = glade_text_button_grab_focus;

  g_type_class_add_private (object_class, sizeof (GladeTextButtonPrivate));
}

static void
glade_text_button_init (GladeTextButton * self)
{
  GtkWidget *image;

  gtk_alignment_set_padding (GTK_ALIGNMENT (self), 1, 1, 2, 2);

  self->hbox = gtk_hbox_new (FALSE, 2);

  gtk_container_add (GTK_CONTAINER (self), self->hbox);

  self->entry = gtk_entry_new ();
  gtk_box_pack_start (GTK_BOX (self->hbox), self->entry, TRUE, TRUE, 0);

  self->button = gtk_button_new ();
  gtk_box_pack_start (GTK_BOX (self->hbox), self->button, FALSE, FALSE, 0);

  image = gtk_image_new_from_stock (GTK_STOCK_EDIT, GTK_ICON_SIZE_MENU);
  gtk_widget_show (image);
  gtk_container_add (GTK_CONTAINER (self->button), image);
}

static void
glade_text_button_clicked (GtkWidget * widget, GladeTextButton * button)
{
  gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (button));
  gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (button));
}

/* GtkCellEditable method implementations
 */
static void
glade_text_button_entry_activated (GtkEntry * entry, GladeTextButton * button)
{
  gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (button));
  gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (button));
}

static gboolean
glade_text_button_key_press_event (GtkEntry * entry,
                                   GdkEventKey * key_event,
                                   GladeTextButton * button)
{
  if (key_event->keyval == GDK_KEY_Escape)
    {
      g_object_get (entry, "editing-canceled", TRUE, NULL);
      gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (button));
      gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (button));

      return TRUE;
    }

  /* override focus */
  if (key_event->keyval == GDK_KEY_Up || key_event->keyval == GDK_KEY_Down)
    {
      gtk_cell_editable_editing_done (GTK_CELL_EDITABLE (button));
      gtk_cell_editable_remove_widget (GTK_CELL_EDITABLE (button));
      return TRUE;
    }
  return FALSE;
}


static void
glade_text_button_start_editing (GtkCellEditable * cell_editable,
                                 GdkEvent * event)
{
  g_signal_connect (GLADE_TEXT_BUTTON (cell_editable)->button, "clicked",
                    G_CALLBACK (glade_text_button_clicked), cell_editable);
  g_signal_connect (GLADE_TEXT_BUTTON (cell_editable)->entry, "activate",
                    G_CALLBACK (glade_text_button_entry_activated),
                    cell_editable);
  g_signal_connect (cell_editable, "key-press-event",
                    G_CALLBACK (glade_text_button_key_press_event),
                    cell_editable);
}

static void
glade_text_button_cell_editable_init (GtkCellEditableIface * iface)
{
  iface->start_editing = glade_text_button_start_editing;
}

static void
glade_text_button_finalize (GObject * object)
{
  G_OBJECT_CLASS (glade_text_button_parent_class)->finalize (object);
}

static void
glade_text_button_grab_focus (GtkWidget * widget)
{
  GladeTextButton *text_button = GLADE_TEXT_BUTTON (widget);

  gtk_widget_grab_focus (text_button->entry);
}

/**
 * glade_text_button_new:
 *
 * Creates a new #GladeTextButton. 
 *
 * Returns: a new #GladeTextButton
 *
 */
GtkWidget *
glade_text_button_new (void)
{
  return g_object_new (GLADE_TYPE_TEXT_BUTTON, NULL);
}