/* $Id$ */
/*-
 * Copyright (c) 2005 Benedikt Meurer <benny@xfce.org>
 * Copyright (c) 2008 Jannis Pohlmann <jannis@xfce.org>
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *                                                                              
 * 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 General Public License for more details.
 *                                                                              
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 */

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

#include "xfae-dialog.h"
#include "xfae-model.h"
#include "xfae-window.h"



static void     xfae_window_class_init          (XfaeWindowClass  *klass);
static void     xfae_window_init                (XfaeWindow       *window);
static void     xfae_window_add                 (XfaeWindow       *window);
static void     xfae_window_remove              (XfaeWindow       *window);
static gboolean xfae_window_button_press_event  (GtkWidget        *treeview,
                                                 GdkEventButton   *event,
                                                 XfaeWindow       *window);
static void     xfae_window_item_toggled        (XfaeWindow       *window,
                                                 gchar            *path_string);
static void     xfae_window_selection_changed   (GtkTreeSelection *selection,
                                                 GtkWidget        *remove_button);



struct _XfaeWindowClass
{
  GtkVBoxClass __parent__;
};

struct _XfaeWindow
{
  GtkVBox           __parent__;

  GtkTreeSelection *selection;

  GtkWidget        *treeview;
};



G_DEFINE_TYPE (XfaeWindow, xfae_window, GTK_TYPE_VBOX);



static void
xfae_window_class_init (XfaeWindowClass *klass)
{
}



static void
xfae_window_init (XfaeWindow *window)
{
  GtkTreeViewColumn *column;
  GtkCellRenderer   *renderer;
  GtkTreeModel      *model;
  GtkWidget         *vbox;
  GtkWidget         *hbox;
  GtkWidget         *img;
  GtkWidget         *label;
  GtkWidget         *swin;
  GtkWidget         *bbox;
  GtkWidget         *button;

  vbox = GTK_WIDGET(window);
  gtk_box_set_spacing (GTK_BOX (vbox), 6);
  gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);

  hbox = gtk_hbox_new (FALSE, 12);
  gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, TRUE, 0);
  gtk_widget_show (hbox);

  img = gtk_image_new_from_stock (GTK_STOCK_DIALOG_INFO, GTK_ICON_SIZE_DIALOG);
  gtk_box_pack_start (GTK_BOX (hbox), img, FALSE, FALSE, 0);
  gtk_widget_show (img);

  label = g_object_new (GTK_TYPE_LABEL,
                        "justify", GTK_JUSTIFY_FILL,
                        "label", _("Below is the list of applications that will be started "
                                   "automatically when you login to your Xfce desktop, "
                                   "in addition to the applications that were saved when "
                                   "you logged out last time:"),
                        "xalign", 0.0f,
                        NULL);
  gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
  gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 0);
  gtk_widget_show (label);

  swin = g_object_new (GTK_TYPE_SCROLLED_WINDOW,
                       "hadjustment", NULL,
                       "vadjustment", NULL,
                       "shadow-type", GTK_SHADOW_IN,
                       "vscrollbar-policy", GTK_POLICY_AUTOMATIC,
                       "hscrollbar-policy", GTK_POLICY_NEVER,
                       NULL);
  gtk_box_pack_start (GTK_BOX (vbox), swin, TRUE, TRUE, 0);
  gtk_widget_show (swin);

  window->treeview = g_object_new (GTK_TYPE_TREE_VIEW,
                                   "headers-visible", FALSE,
                                   "hadjustment", NULL,
                                   "vadjustment", NULL,
                                   NULL);
  g_signal_connect (G_OBJECT (window->treeview), "button-press-event",
                    G_CALLBACK (xfae_window_button_press_event), window);
  gtk_container_add (GTK_CONTAINER (swin), window->treeview);
  gtk_widget_show (window->treeview);

  model = xfae_model_new ();
  gtk_tree_view_set_model (GTK_TREE_VIEW (window->treeview), model);
  g_object_unref (G_OBJECT (model));

  window->selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (window->treeview));
  gtk_tree_selection_set_mode (window->selection, GTK_SELECTION_SINGLE);

  column = g_object_new (GTK_TYPE_TREE_VIEW_COLUMN,
                         "reorderable", FALSE,
                         "resizable", FALSE,
                         NULL);
  renderer = gtk_cell_renderer_toggle_new ();
  g_signal_connect_swapped (G_OBJECT (renderer), "toggled",
                            G_CALLBACK (xfae_window_item_toggled), window);
  gtk_tree_view_column_pack_start (column, renderer, FALSE);
  gtk_tree_view_column_set_attributes (column, renderer,
                                       "active", XFAE_MODEL_COLUMN_ENABLED,
                                       NULL);
  gtk_tree_view_append_column (GTK_TREE_VIEW (window->treeview), column);

  column = g_object_new (GTK_TYPE_TREE_VIEW_COLUMN,
                         "reorderable", FALSE,
                         "resizable", FALSE,
                         NULL);
  renderer = gtk_cell_renderer_pixbuf_new ();
  gtk_tree_view_column_pack_start (column, renderer, FALSE);
  gtk_tree_view_column_set_attributes (column, renderer,
                                       "pixbuf", XFAE_MODEL_COLUMN_ICON,
                                       NULL);
  renderer = gtk_cell_renderer_text_new ();
  gtk_tree_view_column_pack_start (column, renderer, TRUE);
  gtk_tree_view_column_set_attributes (column, renderer,
                                       "text", XFAE_MODEL_COLUMN_NAME,
                                       NULL);
  renderer = gtk_cell_renderer_text_new ();
  gtk_tree_view_append_column (GTK_TREE_VIEW (window->treeview), column);

  bbox = gtk_hbox_new (FALSE, 6);
  gtk_box_pack_start (GTK_BOX (vbox), bbox, FALSE, TRUE, 0);
  gtk_widget_show (bbox);

  button = gtk_button_new_from_stock (GTK_STOCK_ADD);
  g_signal_connect_swapped (G_OBJECT (button), "clicked",
                            G_CALLBACK (xfae_window_add), window);
  gtk_box_pack_start (GTK_BOX (bbox), button, FALSE, FALSE, 0);
  gtk_widget_show (button);

  button = gtk_button_new_from_stock (GTK_STOCK_REMOVE);
  g_signal_connect_swapped (G_OBJECT (button), "clicked",
                            G_CALLBACK (xfae_window_remove), window);
  g_signal_connect (G_OBJECT (window->selection), "changed",
                    G_CALLBACK (xfae_window_selection_changed), button);
  xfae_window_selection_changed (window->selection, button);
  gtk_box_pack_start (GTK_BOX (bbox), button, FALSE, FALSE, 0);
  gtk_widget_show (button);
}



static gboolean
xfae_window_button_press_event (GtkWidget      *treeview,
                                GdkEventButton *event,
                                XfaeWindow     *window)
{
  GtkTreeSelection *selection;
  GtkTreeModel     *model;
  GtkTreePath      *path;
  GtkTreeIter       iter;
  GMainLoop        *loop;
  GtkWidget        *menu;
  GtkWidget        *item;
  gboolean          removable = FALSE;

  if (event->button == 3 && event->type == GDK_BUTTON_PRESS)
    {
      if (gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (treeview),
                                         event->x, event->y,
                                         &path, NULL, NULL, NULL))
        {
          selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (treeview));
          gtk_tree_selection_select_path (selection, path);
          gtk_tree_path_free (path);

          if (gtk_tree_selection_get_selected (selection, &model, &iter))
            gtk_tree_model_get (model, &iter, XFAE_MODEL_COLUMN_REMOVABLE, &removable, -1);

          menu = gtk_menu_new ();

          item = gtk_image_menu_item_new_from_stock (GTK_STOCK_ADD, NULL);
          g_signal_connect_swapped (G_OBJECT (item), "activate",
                                    G_CALLBACK (xfae_window_add), window);
          gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
          gtk_widget_show (item);

          item = gtk_image_menu_item_new_from_stock (GTK_STOCK_REMOVE, NULL);
          g_signal_connect_swapped (G_OBJECT (item), "activate",
                                    G_CALLBACK (xfae_window_remove), window);
          gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
          gtk_widget_set_sensitive (item, removable);
          gtk_widget_show (item);

          gtk_menu_set_screen (GTK_MENU (menu), gtk_widget_get_screen (treeview));

          loop = g_main_loop_new (NULL, FALSE);
          g_signal_connect_swapped (G_OBJECT (menu), "deactivate",
                                    G_CALLBACK (g_main_loop_quit), loop);
          gtk_grab_add (menu);
          gtk_menu_popup (GTK_MENU (menu), NULL, NULL, NULL,
                          NULL, event->button, event->time);
          g_main_loop_run (loop);
          g_main_loop_unref (loop);
          gtk_grab_remove (menu);

          gtk_object_sink (GTK_OBJECT (menu));

          return TRUE;
        }
    }

  return FALSE;
}



static void
xfae_window_add (XfaeWindow *window)
{
  GtkTreeModel *model;
  GtkWidget    *dialog;
  GError       *error = NULL;
  gchar        *name;
  gchar        *descr;
  gchar        *command;

  dialog = xfae_dialog_new ();
  gtk_window_set_transient_for (GTK_WINDOW (dialog), GTK_WINDOW (window));
  if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_OK)
    {
      gtk_widget_hide (dialog);

      xfae_dialog_get (XFAE_DIALOG (dialog), &name, &descr, &command);

      model = gtk_tree_view_get_model (GTK_TREE_VIEW (window->treeview));
      if (!xfae_model_add (XFAE_MODEL (model), name, descr, command, &error))
        {
          xfce_err (error->message);
          g_error_free (error);
        }

      g_free (command);
      g_free (descr);
      g_free (name);
    }
  gtk_widget_destroy (dialog);
}



static void
xfae_window_remove (XfaeWindow *window)
{
  GtkTreeSelection *selection;
  GtkTreeModel     *model;
  GtkTreeIter       iter;
  GError           *error = NULL;

  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (window->treeview));
  if (gtk_tree_selection_get_selected (selection, &model, &iter))
    {
      if (!xfae_model_remove (XFAE_MODEL (model), &iter, &error))
        {
          xfce_err (error->message);
          g_error_free (error);
        }
    }
}



static void
xfae_window_item_toggled (XfaeWindow *window,
                          gchar      *path_string)
{
  GtkTreeModel *model;
  GtkTreePath  *path;
  GtkTreeIter   iter;
  GError       *error = NULL;

  model = gtk_tree_view_get_model (GTK_TREE_VIEW (window->treeview));
  path = gtk_tree_path_new_from_string (path_string);
  if (gtk_tree_model_get_iter (model, &iter, path))
    {
      if (!xfae_model_toggle (XFAE_MODEL (model), &iter, &error))
        {
          xfce_err (error->message);
          g_error_free (error);
        }
    }
  gtk_tree_path_free (path);
}



static void
xfae_window_selection_changed (GtkTreeSelection *selection,
                               GtkWidget        *remove_button)
{
  GtkTreeModel *model;
  GtkTreeIter   iter;
  gboolean      removable = FALSE;

  if (gtk_tree_selection_get_selected (selection, &model, &iter))
    gtk_tree_model_get (model, &iter, XFAE_MODEL_COLUMN_REMOVABLE, &removable, -1);

  gtk_widget_set_sensitive (remove_button, removable);
}



/**
 * xfae_window_new:
 *
 * Allocates a new #XfaeWindow instance.
 *
 * Return value: the newly allocated #XfaeWindow instance.
 **/
GtkWidget*
xfae_window_new (void)
{
  return g_object_new (XFAE_TYPE_WINDOW, NULL);
}




#if 0
/**
 * xfae_window_create_plug_child:
 *
 * Creates a widget that can be used to embed the window contents 
 * into a GtkPlug widget. After this function call, the XfaeWindow can
 * no longer be used and has to be re-created.
 *
 * Return value: A widget holding the most important contents of the 
 *               window.
 **/
GtkWidget*
xfae_window_create_plug_child (XfaeWindow *window)
{
  GtkWidget *vbox;
  GtkWidget *bbox;
  GtkWidget *button;

  g_return_val_if_fail (XFAE_IS_WINDOW (window), NULL);

  vbox = gtk_vbox_new (FALSE, 6);
  gtk_container_set_border_width (GTK_CONTAINER (vbox), 6);
  gtk_widget_show (vbox);

  gtk_widget_reparent (window->ibox, vbox);
  gtk_widget_show (window->ibox);

  bbox = gtk_hbutton_box_new ();
  gtk_box_set_spacing (GTK_BOX (bbox), 12);
  gtk_button_box_set_layout (GTK_BUTTON_BOX (bbox), GTK_BUTTONBOX_CENTER);
  gtk_box_pack_start (GTK_BOX (vbox), bbox, FALSE, TRUE, 0);
  gtk_widget_show (bbox);

  button = gtk_button_new_from_stock (GTK_STOCK_ADD);
  g_signal_connect_swapped (G_OBJECT (button), "clicked",
                            G_CALLBACK (xfae_window_add), window);
  gtk_box_pack_start (GTK_BOX (bbox), button, FALSE, FALSE, 0);
  gtk_widget_show (button);

  button = gtk_button_new_from_stock (GTK_STOCK_REMOVE);
  g_signal_connect_swapped (G_OBJECT (button), "clicked",
                            G_CALLBACK (xfae_window_remove), window);
  g_signal_connect (G_OBJECT (window->selection), "changed",
                    G_CALLBACK (xfae_window_selection_changed), button);
  xfae_window_selection_changed (window->selection, button);
  gtk_box_pack_start (GTK_BOX (bbox), button, FALSE, FALSE, 0);
  gtk_widget_show (button);

  return vbox;
}
#endif