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eog-plugin-manager.c

/* Eye Of Gnome - EOG Plugin Manager 
 *
 * Copyright (C) 2007 The Free Software Foundation
 *
 * Author: Lucas Rocha <lucasr@gnome.org>
 *
 * Based on gedit code (gedit/gedit-module.c) by: 
 *    - Paolo Maggi <paolo@gnome.org>
 *
 * 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 of the License, 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 <string.h>

#include "eog-plugin-manager.h"
#include "eog-plugin-engine.h"
#include "eog-util.h"
#include "eog-plugin.h"
#include "eog-debug.h"

#include <glib/gi18n.h>
#include <glade/glade-xml.h>
#include <libgnome/gnome-url.h>

enum {
      ACTIVE_COLUMN,
      AVAILABLE_COLUMN,
      INFO_COLUMN,
      N_COLUMNS
};

#define EOG_PLUGIN_MANAGER_GET_PRIVATE(object) \
      (G_TYPE_INSTANCE_GET_PRIVATE ((object), EOG_TYPE_PLUGIN_MANAGER, EogPluginManagerPrivate))

G_DEFINE_TYPE (EogPluginManager, eog_plugin_manager, GTK_TYPE_VBOX)

#define PLUGIN_MANAGER_NAME_TITLE   _("Plugin")
#define PLUGIN_MANAGER_ACTIVE_TITLE _("Enabled")

struct _EogPluginManagerPrivate {
      GtkWidget   *tree;

      GtkWidget   *about_button;
      GtkWidget   *configure_button;

      const GList *plugins;

      GtkWidget   *about;
      
      GtkWidget   *popup_menu;
};

static EogPluginInfo *plugin_manager_get_selected_plugin (EogPluginManager *pm); 
static void plugin_manager_toggle_active (GtkTreeIter *iter, GtkTreeModel *model); 
static void eog_plugin_manager_finalize (GObject *object);

static void 
eog_plugin_manager_class_init (EogPluginManagerClass *klass)
{
      GObjectClass *object_class = G_OBJECT_CLASS (klass);

      object_class->finalize = eog_plugin_manager_finalize;

      g_type_class_add_private (object_class, sizeof (EogPluginManagerPrivate));
}

static void
about_button_cb (GtkWidget        *button,
             EogPluginManager *pm)
{
      EogPluginInfo *info;

      eog_debug (DEBUG_PLUGINS);

      info = plugin_manager_get_selected_plugin (pm);

      g_return_if_fail (info != NULL);

      /* If there is another about dialog already open destroy it */
      if (pm->priv->about)
            gtk_widget_destroy (pm->priv->about);

      pm->priv->about = g_object_new (GTK_TYPE_ABOUT_DIALOG,
            "program-name" , eog_plugin_engine_get_plugin_name (info),
            "copyright", eog_plugin_engine_get_plugin_copyright (info),
            "authors", eog_plugin_engine_get_plugin_authors (info),
            "comments", eog_plugin_engine_get_plugin_description (info),
            "website", eog_plugin_engine_get_plugin_website (info),
            "logo-icon-name", eog_plugin_engine_get_plugin_icon_name (info),
            NULL);

      gtk_window_set_destroy_with_parent (GTK_WINDOW (pm->priv->about),
                                  TRUE);

      g_signal_connect (pm->priv->about,
                    "response",
                    G_CALLBACK (gtk_widget_destroy),
                    NULL);

      g_signal_connect (pm->priv->about,
                    "destroy",
                    G_CALLBACK (gtk_widget_destroyed),
                    &pm->priv->about);

      gtk_window_set_transient_for (GTK_WINDOW (pm->priv->about),
                              GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET(pm))));

      gtk_widget_show (pm->priv->about);
}

static void
configure_button_cb (GtkWidget        *button,
                 EogPluginManager *pm)
{
      EogPluginInfo *info;
      GtkWindow *toplevel;

      eog_debug (DEBUG_PLUGINS);

      info = plugin_manager_get_selected_plugin (pm);

      g_return_if_fail (info != NULL);

      eog_debug_message (DEBUG_PLUGINS, "Configuring: %s\n", 
                     eog_plugin_engine_get_plugin_name (info));

      toplevel = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET(pm)));

      eog_plugin_engine_configure_plugin (info, toplevel);

      eog_debug_message (DEBUG_PLUGINS, "Done");
}

static void
plugin_manager_view_info_cell_cb (GtkTreeViewColumn *tree_column,
                          GtkCellRenderer   *cell,
                          GtkTreeModel      *tree_model,
                          GtkTreeIter       *iter,
                          gpointer           data)
{
      EogPluginInfo *info;
      gchar *text;
      
      g_return_if_fail (tree_model != NULL);
      g_return_if_fail (tree_column != NULL);

      gtk_tree_model_get (tree_model, iter, INFO_COLUMN, &info, -1);

      if (info == NULL)
            return;

      text = g_markup_printf_escaped ("<b>%s</b>\n%s",
                              eog_plugin_engine_get_plugin_name (info),
                              eog_plugin_engine_get_plugin_description (info));

      g_object_set (G_OBJECT (cell),
                  "markup", text,
                  "sensitive", eog_plugin_engine_plugin_is_available (info),
                  NULL);

      g_free (text);
}

static void
plugin_manager_view_icon_cell_cb (GtkTreeViewColumn *tree_column,
                          GtkCellRenderer   *cell,
                          GtkTreeModel      *tree_model,
                          GtkTreeIter       *iter,
                          gpointer           data)
{
      EogPluginInfo *info;
      
      g_return_if_fail (tree_model != NULL);
      g_return_if_fail (tree_column != NULL);

      gtk_tree_model_get (tree_model, iter, INFO_COLUMN, &info, -1);

      if (info == NULL)
            return;

      g_object_set (G_OBJECT (cell),
                  "icon-name", eog_plugin_engine_get_plugin_icon_name (info),
                  "sensitive", eog_plugin_engine_plugin_is_available (info),
                  NULL);
}


static void
active_toggled_cb (GtkCellRendererToggle *cell,
               gchar                 *path_str,
               EogPluginManager    *pm)
{
      GtkTreeIter iter;
      GtkTreePath *path;
      GtkTreeModel *model;

      eog_debug (DEBUG_PLUGINS);

      path = gtk_tree_path_new_from_string (path_str);

      model = gtk_tree_view_get_model (GTK_TREE_VIEW (pm->priv->tree));

      g_return_if_fail (model != NULL);

      gtk_tree_model_get_iter (model, &iter, path);

      if (&iter != NULL)
            plugin_manager_toggle_active (&iter, model);

      gtk_tree_path_free (path);
}

static void
cursor_changed_cb (GtkTreeView *view,
               gpointer     data)
{
      EogPluginManager *pm = data;
      EogPluginInfo *info;

      eog_debug (DEBUG_PLUGINS);

      info = plugin_manager_get_selected_plugin (pm);

      gtk_widget_set_sensitive (GTK_WIDGET (pm->priv->about_button),
                          info != NULL);

      gtk_widget_set_sensitive (GTK_WIDGET (pm->priv->configure_button),
                          (info != NULL) && 
                           eog_plugin_engine_plugin_is_configurable (info));
}

static void
row_activated_cb (GtkTreeView       *tree_view,
              GtkTreePath       *path,
              GtkTreeViewColumn *column,
              gpointer           data)
{
      EogPluginManager *pm = data;
      GtkTreeIter iter;
      GtkTreeModel *model;

      eog_debug (DEBUG_PLUGINS);

      model = gtk_tree_view_get_model (GTK_TREE_VIEW (pm->priv->tree));

      g_return_if_fail (model != NULL);

      gtk_tree_model_get_iter (model, &iter, path);

      g_return_if_fail (&iter != NULL);

      plugin_manager_toggle_active (&iter, model);
}

static void
plugin_manager_populate_lists (EogPluginManager *pm)
{
      const GList *plugins;
      GtkListStore *model;
      GtkTreeIter iter;

      eog_debug (DEBUG_PLUGINS);

      plugins = pm->priv->plugins;

      model = GTK_LIST_STORE (gtk_tree_view_get_model (GTK_TREE_VIEW (pm->priv->tree)));

      while (plugins) {
            EogPluginInfo *info;
            info = (EogPluginInfo *)plugins->data;

            gtk_list_store_append (model, &iter);
            gtk_list_store_set (model, &iter,
                            ACTIVE_COLUMN, eog_plugin_engine_plugin_is_active (info),
                            AVAILABLE_COLUMN, eog_plugin_engine_plugin_is_available (info),
                            INFO_COLUMN, info,
                            -1);

            plugins = plugins->next;
      }

      if (gtk_tree_model_get_iter_first (GTK_TREE_MODEL (model), &iter)) {
            GtkTreeSelection *selection;
            EogPluginInfo* info;

            selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (pm->priv->tree));

            g_return_if_fail (selection != NULL);
            
            gtk_tree_selection_select_iter (selection, &iter);

            gtk_tree_model_get (GTK_TREE_MODEL (model), &iter,
                            INFO_COLUMN, &info, -1);

            gtk_widget_set_sensitive (GTK_WIDGET (pm->priv->configure_button),
                                eog_plugin_engine_plugin_is_configurable (info));
      }
}

static gboolean
plugin_manager_set_active (GtkTreeIter  *iter,
                     GtkTreeModel *model,
                     gboolean      active)
{
      EogPluginInfo *info;
      gboolean res = TRUE;
      
      eog_debug (DEBUG_PLUGINS);

      gtk_tree_model_get (model, iter, INFO_COLUMN, &info, -1);

      g_return_val_if_fail (info != NULL, FALSE);

      if (active) {
            /* Activate the plugin */
            if (!eog_plugin_engine_activate_plugin (info)) {
                  eog_debug_message (DEBUG_PLUGINS, "Could not activate %s.\n", 
                                 eog_plugin_engine_get_plugin_name (info));
  
                  res = FALSE;
            }
      } else {
            /* Deactivate the plugin */
            if (!eog_plugin_engine_deactivate_plugin (info)) {
                  eog_debug_message (DEBUG_PLUGINS, "Could not deactivate %s.\n", 
                                   eog_plugin_engine_get_plugin_name (info));

                  res = FALSE;
            }
      }
  
      /* Set new value */
      gtk_list_store_set (GTK_LIST_STORE (model), 
                      iter, 
                      ACTIVE_COLUMN, eog_plugin_engine_plugin_is_active (info),
                      AVAILABLE_COLUMN, eog_plugin_engine_plugin_is_available (info),
                      -1);

      return res;
}

static void
plugin_manager_toggle_active (GtkTreeIter  *iter,
                        GtkTreeModel *model)
{
      gboolean active;
      
      eog_debug (DEBUG_PLUGINS);

      gtk_tree_model_get (model, iter, ACTIVE_COLUMN, &active, -1);

      active ^= 1;

      plugin_manager_set_active (iter, model, active);
}

static EogPluginInfo *
plugin_manager_get_selected_plugin (EogPluginManager *pm)
{
      EogPluginInfo *info = NULL;
      GtkTreeModel *model;
      GtkTreeIter iter;
      GtkTreeSelection *selection;

      eog_debug (DEBUG_PLUGINS);

      model = gtk_tree_view_get_model (GTK_TREE_VIEW (pm->priv->tree));

      g_return_val_if_fail (model != NULL, NULL);

      selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (pm->priv->tree));

      g_return_val_if_fail (selection != NULL, NULL);

      if (gtk_tree_selection_get_selected (selection, NULL, &iter)) {
            gtk_tree_model_get (model, &iter, INFO_COLUMN, &info, -1);
      }

      return info;
}

static void
plugin_manager_set_active_all (EogPluginManager *pm,
                         gboolean            active)
{
      GtkTreeModel *model;
      GtkTreeIter iter;

      eog_debug (DEBUG_PLUGINS);

      model = gtk_tree_view_get_model (GTK_TREE_VIEW (pm->priv->tree));

      g_return_if_fail (model != NULL);

      gtk_tree_model_get_iter_first (model, &iter);

      do {
            plugin_manager_set_active (&iter, model, active);           
      } while (gtk_tree_model_iter_next (model, &iter));
}

/* Callback used as the interactive search comparison function */
static gboolean
name_search_cb (GtkTreeModel *model,
            gint          column,
            const gchar  *key,
            GtkTreeIter  *iter,
            gpointer      data)
{
      EogPluginInfo *info;
      gchar *normalized_string;
      gchar *normalized_key;
      gchar *case_normalized_string;
      gchar *case_normalized_key;
      gint key_len;
      gboolean retval;

      gtk_tree_model_get (model, iter, INFO_COLUMN, &info, -1);

      if (!info)
            return FALSE;

      normalized_string = g_utf8_normalize (eog_plugin_engine_get_plugin_name (info), -1, G_NORMALIZE_ALL);
      normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
      case_normalized_string = g_utf8_casefold (normalized_string, -1);
      case_normalized_key = g_utf8_casefold (normalized_key, -1);

      key_len = strlen (case_normalized_key);

      /* Oddly enough, this callback must return whether to stop the search
       * because we found a match, not whether we actually matched. */
      retval = (strncmp (case_normalized_key, case_normalized_string, key_len) != 0);

      g_free (normalized_key);
      g_free (normalized_string);
      g_free (case_normalized_key);
      g_free (case_normalized_string);

      return retval;
}

static void
enable_plugin_menu_cb (GtkMenu            *menu,
                   EogPluginManager *pm)
{
      GtkTreeModel *model;
      GtkTreeIter iter;
      GtkTreeSelection *selection;

      model = gtk_tree_view_get_model (GTK_TREE_VIEW (pm->priv->tree));

      g_return_if_fail (model != NULL);

      selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (pm->priv->tree));

      g_return_if_fail (selection != NULL);

      if (gtk_tree_selection_get_selected (selection, NULL, &iter))
            plugin_manager_toggle_active (&iter, model);
}

static void
enable_all_menu_cb (GtkMenu          *menu,
                EogPluginManager *pm)
{
      plugin_manager_set_active_all (pm, TRUE);
}

static void
disable_all_menu_cb (GtkMenu          *menu,
                 EogPluginManager *pm)
{
      plugin_manager_set_active_all (pm, FALSE);
}

static GtkWidget *
create_tree_popup_menu (EogPluginManager *pm)
{
      GtkWidget *menu;
      GtkWidget *item;
      GtkWidget *image;
      EogPluginInfo *info;

      info = plugin_manager_get_selected_plugin (pm);

      if (info == NULL)
            return NULL;

      menu = gtk_menu_new ();

      item = gtk_image_menu_item_new_with_mnemonic (_("_About"));
      image = gtk_image_new_from_stock (GTK_STOCK_ABOUT,
                                GTK_ICON_SIZE_MENU);
      gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (item), image);
      g_signal_connect (item, "activate",
                    G_CALLBACK (about_button_cb), pm);
      gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);

      item = gtk_image_menu_item_new_with_mnemonic (_("C_onfigure"));
      image = gtk_image_new_from_stock (GTK_STOCK_PREFERENCES,
                                GTK_ICON_SIZE_MENU);
      gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (item), image);
      g_signal_connect (item, "activate",
                    G_CALLBACK (configure_button_cb), pm);
      gtk_widget_set_sensitive (item,
                          eog_plugin_engine_plugin_is_configurable (info));
      gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);

      item = gtk_check_menu_item_new_with_mnemonic (_("A_ctivate"));
      gtk_widget_set_sensitive (item,
                          eog_plugin_engine_plugin_is_available (info));      
      gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (item),
                              eog_plugin_engine_plugin_is_active (info));
      g_signal_connect (item, "toggled",
                    G_CALLBACK (enable_plugin_menu_cb), pm);
      gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);

      item = gtk_separator_menu_item_new ();
      gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);

      item = gtk_menu_item_new_with_mnemonic (_("Ac_tivate All"));
      g_signal_connect (item, "activate",
                    G_CALLBACK (enable_all_menu_cb), pm);
      gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);

      item = gtk_menu_item_new_with_mnemonic (_("_Deactivate All"));
      g_signal_connect (item, "activate",
                    G_CALLBACK (disable_all_menu_cb), pm);
      gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);

      gtk_widget_show_all (menu);
      
      return menu;
}

static void
tree_popup_menu_detach (EogPluginManager *pm,
                  GtkMenu            *menu)
{
      pm->priv->popup_menu = NULL;
}

static void
menu_position_under_widget (GtkMenu  *menu,
                      gint     *x,
                      gint     *y,
                      gboolean *push_in,
                      gpointer  user_data)
{
      GtkWidget *w = GTK_WIDGET (user_data);
      GtkRequisition requisition;

      gdk_window_get_origin (w->window, x, y);
      gtk_widget_size_request (GTK_WIDGET (menu), &requisition);

      if (gtk_widget_get_direction (w) == GTK_TEXT_DIR_RTL) {
            *x += w->allocation.x + w->allocation.width - requisition.width;
      } else {
            *x += w->allocation.x;
      }

      *y += w->allocation.y + w->allocation.height;

      *push_in = TRUE;
}

static void
menu_position_under_tree_view (GtkMenu  *menu,
                         gint     *x,
                         gint     *y,
                         gboolean *push_in,
                         gpointer  user_data)
{
      GtkTreeView *tree = GTK_TREE_VIEW (user_data);
      GtkTreeModel *model;
      GtkTreeSelection *selection;
      GtkTreeIter iter;

      model = gtk_tree_view_get_model (tree);

      g_return_if_fail (model != NULL);

      selection = gtk_tree_view_get_selection (tree);

      g_return_if_fail (selection != NULL);

      if (gtk_tree_selection_get_selected (selection, NULL, &iter)) {
            GtkTreePath *path;
            GdkRectangle rect;

            gdk_window_get_origin (GTK_WIDGET (tree)->window, x, y);
                  
            path = gtk_tree_model_get_path (model, &iter);

            gtk_tree_view_get_cell_area (tree, 
                                   path,
                                   gtk_tree_view_get_column (tree, 0), /* FIXME 0 for RTL ? */
                                   &rect);
            gtk_tree_path_free (path);
            
            *x += rect.x;
            *y += rect.y + rect.height;
            
            if (gtk_widget_get_direction (GTK_WIDGET (tree)) == GTK_TEXT_DIR_RTL) {
                  GtkRequisition requisition;

                  gtk_widget_size_request (GTK_WIDGET (menu), &requisition);

                  *x += rect.width - requisition.width;
            }
      } else {
            /* No selection -> regular "under widget" positioning */
            menu_position_under_widget (menu,
                                  x, y, push_in,
                                  tree);
      }
}
static void
show_tree_popup_menu (GtkTreeView        *tree,
                  EogPluginManager *pm,
                  GdkEventButton     *event)
{
      if (pm->priv->popup_menu)
            gtk_widget_destroy (pm->priv->popup_menu);

      pm->priv->popup_menu = create_tree_popup_menu (pm);

      if (pm->priv->popup_menu == NULL)
            return;     

      gtk_menu_attach_to_widget (GTK_MENU (pm->priv->popup_menu),
                           GTK_WIDGET (pm),
                           (GtkMenuDetachFunc) tree_popup_menu_detach);

      if (event != NULL) {
            gtk_menu_popup (GTK_MENU (pm->priv->popup_menu), NULL, NULL,
                        NULL, NULL,
                        event->button, event->time);
      } else {
            gtk_menu_popup (GTK_MENU (pm->priv->popup_menu), NULL, NULL,
                        menu_position_under_tree_view, tree,
                        0, gtk_get_current_event_time ());

            gtk_menu_shell_select_first (GTK_MENU_SHELL (pm->priv->popup_menu),
                                   FALSE);
      }
}

static gboolean
button_press_event_cb (GtkWidget          *tree,
                   GdkEventButton     *event,
                   EogPluginManager *pm)
{
      /* We want the treeview selection to be updated before showing the menu.
       * This code is evil, thanks to Federico Mena Quintero's black magic.
       * See: http://mail.gnome.org/archives/gtk-devel-list/2006-February/msg00168.html
       * FIXME: Let's remove it asap.
       */
      static gboolean in_press = FALSE;
      gboolean handled;

      if (in_press)
            return FALSE; /* we re-entered */

      if (GDK_BUTTON_PRESS != event->type || 3 != event->button)
            return FALSE; /* let the normal handler run */

      in_press = TRUE;
      handled = gtk_widget_event (tree, (GdkEvent *) event);
      in_press = FALSE;

      if (!handled)
            return FALSE;

      /* The selection is fully updated by now */
      show_tree_popup_menu (GTK_TREE_VIEW (tree), pm, event);

      return TRUE;
}

static gboolean
popup_menu_cb (GtkTreeView      *tree,
             EogPluginManager *pm)
{
      show_tree_popup_menu (tree, pm, NULL);

      return TRUE;
}

static gint 
model_name_sort_func (GtkTreeModel *model,
                  GtkTreeIter  *iter1,
                  GtkTreeIter  *iter2,
                  gpointer      user_data)
{
      EogPluginInfo *info1, *info2;
      
      gtk_tree_model_get (model, iter1, INFO_COLUMN, &info1, -1);
      gtk_tree_model_get (model, iter2, INFO_COLUMN, &info2, -1);

      return g_utf8_collate (eog_plugin_engine_get_plugin_name (info1),
                         eog_plugin_engine_get_plugin_name (info2));
}

static void
plugin_manager_construct_tree (EogPluginManager *pm)
{
      GtkTreeViewColumn *column;
      GtkCellRenderer *cell;
      GtkListStore *model;

      eog_debug (DEBUG_PLUGINS);

      model = gtk_list_store_new (N_COLUMNS, 
                            G_TYPE_BOOLEAN, 
                            G_TYPE_BOOLEAN, 
                            G_TYPE_POINTER);

      gtk_tree_view_set_model (GTK_TREE_VIEW (pm->priv->tree),
                         GTK_TREE_MODEL (model));

      g_object_unref (model);

      gtk_tree_view_set_rules_hint (GTK_TREE_VIEW (pm->priv->tree), TRUE);
      gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (pm->priv->tree), FALSE);

      /* First column */
      cell = gtk_cell_renderer_toggle_new ();
      g_object_set (cell, "xpad", 6, NULL);
      g_signal_connect (cell,
                    "toggled",
                    G_CALLBACK (active_toggled_cb),
                    pm);
      column = gtk_tree_view_column_new_with_attributes (PLUGIN_MANAGER_ACTIVE_TITLE,
                                             cell,
                                             "active", ACTIVE_COLUMN,
                                             "activatable", AVAILABLE_COLUMN,
                                             "sensitive", AVAILABLE_COLUMN,
                                             NULL);
      gtk_tree_view_append_column (GTK_TREE_VIEW (pm->priv->tree), column);

      /* Second column */
      column = gtk_tree_view_column_new ();
      gtk_tree_view_column_set_title (column, PLUGIN_MANAGER_NAME_TITLE);
      gtk_tree_view_column_set_resizable (column, TRUE);

      cell = gtk_cell_renderer_pixbuf_new ();
      gtk_tree_view_column_pack_start (column, cell, FALSE);
      g_object_set (cell, "stock-size", GTK_ICON_SIZE_SMALL_TOOLBAR, NULL);
      gtk_tree_view_column_set_cell_data_func (column, cell,
                                     plugin_manager_view_icon_cell_cb,
                                     pm, NULL);
      
      cell = gtk_cell_renderer_text_new ();
      gtk_tree_view_column_pack_start (column, cell, TRUE);
      g_object_set (cell, "ellipsize", PANGO_ELLIPSIZE_END, NULL);
      gtk_tree_view_column_set_cell_data_func (column, cell,
                                     plugin_manager_view_info_cell_cb,
                                     pm, NULL);
      
      gtk_tree_view_column_set_spacing (column, 6);
      gtk_tree_view_append_column (GTK_TREE_VIEW (pm->priv->tree), column);

      /* Sort on the plugin names */
      gtk_tree_sortable_set_default_sort_func (GTK_TREE_SORTABLE (model),
                                               model_name_sort_func,
                                             NULL,
                                           NULL);
      gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (model),
                                    GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID,
                                    GTK_SORT_ASCENDING);

      /* Enable search for our non-string column */
      gtk_tree_view_set_search_column (GTK_TREE_VIEW (pm->priv->tree),
                               INFO_COLUMN);
      gtk_tree_view_set_search_equal_func (GTK_TREE_VIEW (pm->priv->tree),
                                   name_search_cb,
                                   NULL,
                                   NULL);

      g_signal_connect (pm->priv->tree,
                    "cursor_changed",
                    G_CALLBACK (cursor_changed_cb),
                    pm);

      g_signal_connect (pm->priv->tree,
                    "row_activated",
                    G_CALLBACK (row_activated_cb),
                    pm);

      g_signal_connect (pm->priv->tree,
                    "button-press-event",
                    G_CALLBACK (button_press_event_cb),
                    pm);

      g_signal_connect (pm->priv->tree,
                    "popup-menu",
                    G_CALLBACK (popup_menu_cb),
                    pm);

      gtk_widget_show (pm->priv->tree);
}

static void 
eog_plugin_manager_init (EogPluginManager *pm)
{
      GtkWidget *label;
      GtkWidget *viewport;
      GtkWidget *hbuttonbox;

      eog_debug (DEBUG_PLUGINS);

      pm->priv = EOG_PLUGIN_MANAGER_GET_PRIVATE (pm);

      gtk_box_set_spacing (GTK_BOX (pm), 6);

      label = gtk_label_new_with_mnemonic (_("Active _Plugins:"));

      gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_LEFT);

      gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
      
      gtk_box_pack_start (GTK_BOX (pm), label, FALSE, TRUE, 0);
      
      viewport = gtk_scrolled_window_new (NULL, NULL);
      gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (viewport),
                              GTK_POLICY_AUTOMATIC,
                              GTK_POLICY_AUTOMATIC);
      gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (viewport), 
                                   GTK_SHADOW_IN);

      gtk_box_pack_start (GTK_BOX (pm), viewport, TRUE, TRUE, 0);

      pm->priv->tree = gtk_tree_view_new ();
      gtk_container_add (GTK_CONTAINER (viewport), pm->priv->tree);

      gtk_label_set_mnemonic_widget (GTK_LABEL (label), pm->priv->tree);

      hbuttonbox = gtk_hbutton_box_new ();

      gtk_box_pack_start (GTK_BOX (pm), hbuttonbox, FALSE, FALSE, 0);

      gtk_button_box_set_layout (GTK_BUTTON_BOX (hbuttonbox), GTK_BUTTONBOX_END);
      gtk_box_set_spacing (GTK_BOX (hbuttonbox), 8);

      pm->priv->about_button = gtk_button_new_with_mnemonic (_("_About Plugin"));
      gtk_button_set_image (GTK_BUTTON (pm->priv->about_button),
                        gtk_image_new_from_stock (GTK_STOCK_ABOUT,
                                          GTK_ICON_SIZE_BUTTON));

      gtk_container_add (GTK_CONTAINER (hbuttonbox), pm->priv->about_button);

      pm->priv->configure_button = gtk_button_new_with_mnemonic (_("C_onfigure Plugin"));
      gtk_button_set_image (GTK_BUTTON (pm->priv->configure_button),
                        gtk_image_new_from_stock (GTK_STOCK_PREFERENCES,
                                          GTK_ICON_SIZE_BUTTON));

      gtk_container_add (GTK_CONTAINER (hbuttonbox), pm->priv->configure_button);

      gtk_widget_set_size_request (GTK_WIDGET (viewport), 270, 100);

      g_signal_connect (pm->priv->about_button,
                    "clicked",
                    G_CALLBACK (about_button_cb),
                    pm);

      g_signal_connect (pm->priv->configure_button,
                    "clicked",
                    G_CALLBACK (configure_button_cb),
                    pm);

      plugin_manager_construct_tree (pm);

      /* Get the list of available plugins (or installed) */
      pm->priv->plugins = eog_plugin_engine_get_plugins_list ();

      if (pm->priv->plugins != NULL) {
            plugin_manager_populate_lists (pm);
      } else {
            gtk_widget_set_sensitive (pm->priv->about_button, FALSE);
            gtk_widget_set_sensitive (pm->priv->configure_button, FALSE);
      }
}

static void
eog_plugin_manager_finalize (GObject *object)
{
      EogPluginManager *pm = EOG_PLUGIN_MANAGER (object);

      if (pm->priv->popup_menu)
            gtk_widget_destroy (pm->priv->popup_menu);

      G_OBJECT_CLASS (eog_plugin_manager_parent_class)->finalize (object);
}

GtkWidget *
eog_plugin_manager_new (void)
{
      return g_object_new (EOG_TYPE_PLUGIN_MANAGER, NULL);
}

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