New abstracted implementations. Nicer and will be useful for history

2003-04-17  Marco Pesenti Gritti  <marco@it.gnome.org>

	* lib/widgets/Makefile.am:
	* lib/widgets/ephy-node-view.c:
	* lib/widgets/ephy-node-view.h:
	* lib/widgets/ephy-tree-model-node.c:
	* lib/widgets/ephy-tree-model-node.h:

	New abstracted implementations.
	Nicer and will be useful for
	history dialog interface rehash to make
	it more consistent with bookmarks (this
	was the hard part of the work).

	* src/bookmarks/Makefile.am:
	* src/bookmarks/ephy-bookmarks-editor.c:

	Use them.

	* src/history-dialog.c:

	Temp hack to keep the thing building until
	I actually rewrite history dialog.

2

1 files changed, 1099 insertions, 0 deletions

diff --git a/lib/widgets/ephy-node-view.c b/lib/widgets/ephy-node-view.c
new file mode 100644
index 000000000..1d8eba5cd
--- /dev/null
+++ b/lib/widgets/ephy-node-view.c
@@ -0,0 +1,1099 @@
+/* 
+ *  Copyright (C) 2002 Jorn Baayen <jorn@nl.linux.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.
+ *
+ */
+
+#include <gtk/gtktreeselection.h>
+#include <gtk/gtktreeviewcolumn.h>
+#include <gtk/gtkcellrenderertext.h>
+#include <gtk/gtkcellrendererpixbuf.h>
+#include <gtk/gtkwindow.h>
+#include <gdk/gdkkeysyms.h>
+#include <libgnome/gnome-i18n.h>
+
+#include "eggtreemodelfilter.h"
+#include "ephy-node-view.h"
+#include "ephy-tree-model-sort.h"
+#include "eggtreemultidnd.h"
+#include "ephy-dnd.h"
+#include "ephy-marshal.h"
+#include "string.h"
+
+static void ephy_node_view_class_init (EphyNodeViewClass *klass);
+static void ephy_node_view_init (EphyNodeView *view);
+static void ephy_node_view_finalize (GObject *object);
+static void ephy_node_view_set_property (GObject *object,
+				         guint prop_id,
+				         const GValue *value,
+				         GParamSpec *pspec);
+static void ephy_node_view_get_property (GObject *object,
+				         guint prop_id,
+				         GValue *value,
+				         GParamSpec *pspec);
+
+struct EphyNodeViewPrivate
+{
+	EphyNode *root;
+
+	EphyTreeModelNode *nodemodel;
+	GtkTreeModel *filtermodel;
+	GtkTreeModel *sortmodel;
+	GtkCellRenderer *editable_renderer;
+	GtkTreeViewColumn *editable_column;
+	EphyTreeModelNodeColumn editable_node_column;
+
+	EphyNodeFilter *filter;
+
+	EphyNode *selected_node;
+
+	GtkTargetList *drag_targets;
+
+	int default_sort_column_id;
+	int priority_prop_id;
+	int priority_column_id;
+
+	gboolean editing;
+	int editable_property;
+};
+
+enum
+{
+	NODE_ACTIVATED,
+	NODE_SELECTED,
+	NODE_DROPPED,
+	SHOW_POPUP,
+	LAST_SIGNAL
+};
+
+enum
+{
+	PROP_0,
+	PROP_ROOT,
+	PROP_FILTER
+};
+
+static EphyNodeView *target_view;
+
+static GObjectClass *parent_class = NULL;
+
+static guint ephy_node_view_signals[LAST_SIGNAL] = { 0 };
+
+GType
+ephy_node_view_get_type (void)
+{
+	static GType ephy_node_view_type = 0;
+
+	if (ephy_node_view_type == 0)
+	{
+		static const GTypeInfo our_info =
+		{
+			sizeof (EphyNodeViewClass),
+			NULL,
+			NULL,
+			(GClassInitFunc) ephy_node_view_class_init,
+			NULL,
+			NULL,
+			sizeof (EphyNodeView),
+			0,
+			(GInstanceInitFunc) ephy_node_view_init
+		};
+
+		ephy_node_view_type = g_type_register_static (GTK_TYPE_TREE_VIEW,
+							      "EphyNodeView",
+							      &our_info, 0);
+	}
+
+	return ephy_node_view_type;
+}
+
+static void
+ephy_node_view_class_init (EphyNodeViewClass *klass)
+{
+	GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+	parent_class = g_type_class_peek_parent (klass);
+
+	object_class->finalize = ephy_node_view_finalize;
+
+	object_class->set_property = ephy_node_view_set_property;
+	object_class->get_property = ephy_node_view_get_property;
+
+	g_object_class_install_property (object_class,
+					 PROP_ROOT,
+					 g_param_spec_object ("root",
+							      "Root node",
+							      "Root node",
+							      EPHY_TYPE_NODE,
+							      G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
+	g_object_class_install_property (object_class,
+					 PROP_FILTER,
+					 g_param_spec_object ("filter",
+							      "Filter object",
+							      "Filter object",
+							      EPHY_TYPE_NODE_FILTER,
+							      G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
+
+	ephy_node_view_signals[NODE_ACTIVATED] =
+		g_signal_new ("node_activated",
+			      G_OBJECT_CLASS_TYPE (object_class),
+			      G_SIGNAL_RUN_LAST,
+			      G_STRUCT_OFFSET (EphyNodeViewClass, node_activated),
+			      NULL, NULL,
+			      g_cclosure_marshal_VOID__OBJECT,
+			      G_TYPE_NONE,
+			      1,
+			      EPHY_TYPE_NODE);
+	ephy_node_view_signals[NODE_SELECTED] =
+		g_signal_new ("node_selected",
+			      G_OBJECT_CLASS_TYPE (object_class),
+			      G_SIGNAL_RUN_LAST,
+			      G_STRUCT_OFFSET (EphyNodeViewClass, node_selected),
+			      NULL, NULL,
+			      g_cclosure_marshal_VOID__OBJECT,
+			      G_TYPE_NONE,
+			      1,
+			      EPHY_TYPE_NODE);
+	ephy_node_view_signals[NODE_DROPPED] =
+		g_signal_new ("node_dropped",
+			      G_OBJECT_CLASS_TYPE (object_class),
+			      G_SIGNAL_RUN_LAST,
+			      G_STRUCT_OFFSET (EphyNodeViewClass, node_dropped),
+			      NULL, NULL,
+			      ephy_marshal_VOID__OBJECT_POINTER,
+			      G_TYPE_NONE,
+			      2,
+			      EPHY_TYPE_NODE,
+			      G_TYPE_POINTER);
+	ephy_node_view_signals[SHOW_POPUP] =
+		g_signal_new ("show_popup",
+			      G_OBJECT_CLASS_TYPE (object_class),
+			      G_SIGNAL_RUN_LAST,
+			      G_STRUCT_OFFSET (EphyNodeViewClass, show_popup),
+			      NULL, NULL,
+			      g_cclosure_marshal_VOID__VOID,
+			      G_TYPE_NONE,
+			      0);
+}
+
+static void
+ephy_node_view_finalize (GObject *object)
+{
+	EphyNodeView *view;
+
+	g_return_if_fail (object != NULL);
+	g_return_if_fail (EPHY_IS_NODE_VIEW (object));
+
+	view = EPHY_NODE_VIEW (object);
+
+	g_return_if_fail (view->priv != NULL);
+
+	g_object_unref (G_OBJECT (view->priv->sortmodel));
+	g_object_unref (G_OBJECT (view->priv->filtermodel));
+	g_object_unref (G_OBJECT (view->priv->nodemodel));
+
+	g_free (view->priv);
+
+	G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static EphyNode *
+get_node_from_path (EphyNodeView *view, GtkTreePath *path)
+{
+	EphyNode *node;
+	GtkTreeIter iter, iter2;
+
+	gtk_tree_model_get_iter (view->priv->sortmodel, &iter, path);
+	gtk_tree_model_sort_convert_iter_to_child_iter
+		(GTK_TREE_MODEL_SORT (view->priv->sortmodel), &iter2, &iter);
+	egg_tree_model_filter_convert_iter_to_child_iter
+		(EGG_TREE_MODEL_FILTER (view->priv->filtermodel), &iter, &iter2);
+	node = ephy_tree_model_node_node_from_iter (view->priv->nodemodel, &iter);
+
+	return node;
+}
+
+static gboolean
+drag_motion_cb (GtkWidget *widget,
+                GdkDragContext *context,
+                gint x,
+                gint y,
+                guint time,
+	        EphyNodeView *view)
+{
+	EphyNode *node;
+	GtkTreePath *path = NULL;
+	GtkTreeViewDropPosition pos;
+	gboolean res;
+	EphyNodeViewPriority priority;
+
+	g_signal_stop_emission_by_name (widget, "drag_motion");
+
+	res = gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget),
+					         x, y, &path, &pos);
+	if (!res) return TRUE;
+
+	node = get_node_from_path (view, path);
+
+	priority = ephy_node_get_property_int (node, view->priv->priority_prop_id);
+
+	if (priority != EPHY_NODE_VIEW_ALL_PRIORITY &&
+	    priority != EPHY_NODE_VIEW_SPECIAL_PRIORITY)
+
+	{
+		gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget), path,
+						 GTK_TREE_VIEW_DROP_INTO_OR_AFTER);
+		gdk_drag_status (context, context->suggested_action, time);
+	}
+	else
+	{
+		gdk_drag_status (context, 0, time);
+	}
+
+	return TRUE;
+}
+
+static gboolean
+drag_drop_cb (GtkWidget *widget,
+              GdkDragContext *context,
+              gint x,
+              gint y,
+              guint time,
+	      EphyNodeView *view)
+{
+	GdkAtom target;
+
+	g_signal_stop_emission_by_name (widget, "drag_drop");
+
+	target = gtk_drag_dest_find_target (widget, context,
+					    view->priv->drag_targets);
+
+	if (target != GDK_NONE)
+	{
+		gtk_drag_get_data (widget, context, target, time);
+	}
+
+	return TRUE;
+}
+
+static gboolean
+drag_data_received_cb (GtkWidget *widget,
+                       GdkDragContext *context,
+                       gint x,
+                       gint y,
+	               GtkSelectionData *selection_data,
+                       guint info,
+                       guint time,
+	               EphyNodeView *view)
+{
+	GtkTreePath *path = NULL;
+	GtkTreeViewDropPosition pos;
+
+	g_signal_stop_emission_by_name (widget, "drag_data_received");
+
+	if (gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget),
+					       x, y, &path, &pos))
+	{
+		EphyNode *node;
+		GList *src_nodes;
+
+		node = get_node_from_path (view, path);
+
+		src_nodes = ephy_dnd_node_list_extract_nodes
+				(selection_data->data);
+
+		g_signal_emit (G_OBJECT (view),
+			       ephy_node_view_signals[NODE_DROPPED], 0,
+			       node, src_nodes);
+
+		g_list_free (src_nodes);
+
+	}
+
+	return TRUE;
+}
+
+void
+ephy_node_view_enable_drag_dest (EphyNodeView *view,
+				 GtkTargetEntry *types,
+				 int n_types)
+{
+	GtkWidget *treeview;
+
+	g_return_if_fail (view != NULL);
+
+	treeview = GTK_WIDGET (view);
+
+	gtk_tree_view_enable_model_drag_dest (GTK_TREE_VIEW (treeview),
+					      types, n_types,
+					      GDK_ACTION_COPY);
+	view->priv->drag_targets = gtk_target_list_new (types, n_types);
+
+	g_signal_connect (treeview, "drag_data_received",
+			  G_CALLBACK (drag_data_received_cb), view);
+	g_signal_connect (treeview, "drag_drop",
+			  G_CALLBACK (drag_drop_cb), view);
+	g_signal_connect (treeview, "drag_motion",
+			  G_CALLBACK (drag_motion_cb), view);
+}
+
+static void
+filter_changed_cb (EphyNodeFilter *filter,
+		   EphyNodeView *view)
+{
+	GtkWidget *window;
+
+	g_return_if_fail (EPHY_IS_NODE_VIEW (view));
+
+	window = gtk_widget_get_toplevel (GTK_WIDGET (view));
+
+	if (window != NULL && window->window != NULL)
+	{
+		/* nice busy cursor */
+		GdkCursor *cursor;
+
+		cursor = gdk_cursor_new (GDK_WATCH);
+		gdk_window_set_cursor (window->window, cursor);
+		gdk_cursor_unref (cursor);
+
+		gdk_flush ();
+
+		gdk_window_set_cursor (window->window, NULL);
+
+		/* no flush: this will cause the cursor to be reset
+		 * only when the UI is free again */
+	}
+}
+
+static void
+ephy_node_view_selection_changed_cb (GtkTreeSelection *selection,
+			             EphyNodeView *view)
+{
+	GList *list;
+	EphyNode *node = NULL;
+
+	view->priv->selected_node = NULL;
+
+	list = ephy_node_view_get_selection (view);
+	if (list)
+	{
+		node = EPHY_NODE (list->data);
+	}
+	g_list_free (list);
+
+	g_signal_emit (G_OBJECT (view), ephy_node_view_signals[NODE_SELECTED], 0, node);
+}
+
+static void
+ephy_node_view_row_activated_cb (GtkTreeView *treeview,
+			         GtkTreePath *path,
+			         GtkTreeViewColumn *column,
+			         EphyNodeView *view)
+{
+	GtkTreeIter iter, iter2;
+	EphyNode *node;
+
+	gtk_tree_model_get_iter (view->priv->sortmodel, &iter, path);
+	gtk_tree_model_sort_convert_iter_to_child_iter
+		(GTK_TREE_MODEL_SORT (view->priv->sortmodel), &iter2, &iter);
+	egg_tree_model_filter_convert_iter_to_child_iter
+		(EGG_TREE_MODEL_FILTER (view->priv->filtermodel), &iter, &iter2);
+
+	node = ephy_tree_model_node_node_from_iter (view->priv->nodemodel, &iter);
+
+	g_signal_emit (G_OBJECT (view), ephy_node_view_signals[NODE_ACTIVATED], 0, node);
+}
+
+static gboolean
+ephy_node_view_key_press_cb (GtkTreeView *treeview,
+			     GdkEventKey *event,
+			     EphyNodeView *view)
+{
+	if ((event->state & GDK_SHIFT_MASK) &&
+	    (event->keyval == GDK_F10))
+	{
+		g_signal_emit (G_OBJECT (view), ephy_node_view_signals[SHOW_POPUP], 0);
+
+		return TRUE;
+	}
+
+	return FALSE;
+}
+
+static gboolean
+ephy_node_view_button_press_cb (GtkTreeView *treeview,
+			        GdkEventButton *event,
+			        EphyNodeView *view)
+{
+	GtkTreePath *path;
+	GtkTreeSelection *selection;
+	gboolean result = FALSE;
+
+	if (event->button == 3)
+	{
+		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));
+			if (gtk_tree_selection_path_is_selected (selection, path))
+			{
+				/* We handle the event (so the view won't be
+				 * changed by the user click) because the user
+				 * clicked on an already selected element */
+				result = TRUE;
+			}
+			else
+			{
+				view->priv->selected_node =
+					get_node_from_path (view, path);
+			}
+
+			target_view = view;
+			g_signal_emit (G_OBJECT (view), ephy_node_view_signals[SHOW_POPUP], 0);
+			target_view = NULL;
+		}
+	}
+
+	return result;
+}
+
+static void
+ephy_node_view_set_property (GObject *object,
+			     guint prop_id,
+			     const GValue *value,
+			     GParamSpec *pspec)
+{
+	EphyNodeView *view = EPHY_NODE_VIEW (object);
+
+	switch (prop_id)
+	{
+	case PROP_ROOT:
+		view->priv->root = g_value_get_object (value);
+		break;
+	case PROP_FILTER:
+		view->priv->filter = g_value_get_object (value);
+
+		if (view->priv->filter != NULL)
+		{
+			g_signal_connect_object (G_OBJECT (view->priv->filter),
+					         "changed",
+					         G_CALLBACK (filter_changed_cb),
+					         G_OBJECT (view),
+						 0);
+		}
+		break;
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+		break;
+	}
+}
+
+static void
+ephy_node_view_get_property (GObject *object,
+			     guint prop_id,
+			     GValue *value,
+			     GParamSpec *pspec)
+{
+	EphyNodeView *view = EPHY_NODE_VIEW (object);
+
+	switch (prop_id)
+	{
+	case PROP_ROOT:
+		g_value_set_object (value, view->priv->root);
+		break;
+	case PROP_FILTER:
+		g_value_set_object (value, view->priv->filter);
+		break;
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+		break;
+	}
+}
+
+static void
+node_from_sort_iter_cb (EphyTreeModelSort *model,
+		        GtkTreeIter *iter,
+		        void **node,
+		        EphyNodeView *view)
+{
+	GtkTreeIter filter_iter, node_iter;
+
+	gtk_tree_model_sort_convert_iter_to_child_iter (GTK_TREE_MODEL_SORT (model),
+							&filter_iter, iter);
+	egg_tree_model_filter_convert_iter_to_child_iter (EGG_TREE_MODEL_FILTER (view->priv->filtermodel),
+							  &node_iter, &filter_iter);
+	*node = ephy_tree_model_node_node_from_iter
+		(EPHY_TREE_MODEL_NODE (view->priv->nodemodel), &node_iter);
+}
+
+static void
+ephy_node_view_construct (EphyNodeView *view)
+{
+	GtkTreeSelection *selection;
+
+
+	view->priv->nodemodel = ephy_tree_model_node_new (view->priv->root,
+							  view->priv->filter);
+	view->priv->filtermodel = egg_tree_model_filter_new (GTK_TREE_MODEL (view->priv->nodemodel),
+							     NULL);
+	egg_tree_model_filter_set_visible_column (EGG_TREE_MODEL_FILTER (view->priv->filtermodel),
+						  EPHY_TREE_MODEL_NODE_COL_VISIBLE);
+	view->priv->sortmodel = ephy_tree_model_sort_new (view->priv->filtermodel);
+	g_signal_connect_object (G_OBJECT (view->priv->sortmodel),
+				 "node_from_iter",
+				 G_CALLBACK (node_from_sort_iter_cb),
+				 view,
+				 0);
+	gtk_tree_view_set_model (GTK_TREE_VIEW (view), GTK_TREE_MODEL (view->priv->sortmodel));
+	g_signal_connect_object (G_OBJECT (view),
+			         "button_press_event",
+			         G_CALLBACK (ephy_node_view_button_press_cb),
+			         view,
+				 0);
+	g_signal_connect_object (G_OBJECT (view),
+			         "key_press_event",
+			         G_CALLBACK (ephy_node_view_key_press_cb),
+			         view,
+				 0);
+	g_signal_connect_object (G_OBJECT (view),
+			         "row_activated",
+			         G_CALLBACK (ephy_node_view_row_activated_cb),
+			         view,
+				 0);
+
+	selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (view));
+	gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
+	g_signal_connect_object (G_OBJECT (selection),
+			         "changed",
+			         G_CALLBACK (ephy_node_view_selection_changed_cb),
+			         view,
+				 0);
+}
+
+GtkWidget *
+ephy_node_view_new (EphyNode *root,
+		    EphyNodeFilter *filter)
+{
+	EphyNodeView *view;
+
+	view = EPHY_NODE_VIEW (g_object_new (EPHY_TYPE_NODE_VIEW,
+					     "filter", filter,
+					     "root", root,
+					     NULL));
+
+	ephy_node_view_construct (view);
+
+	g_return_val_if_fail (view->priv != NULL, NULL);
+
+	return GTK_WIDGET (view);
+}
+
+static void
+cell_renderer_edited (GtkCellRendererText *cell,
+                      const char *path_str,
+                      const char *new_text,
+                      EphyNodeView *view)
+{
+	GValue value = { 0, };
+	GtkTreePath *path;
+	GtkTreeIter iter, iter2;
+	EphyNode *node;
+
+	view->priv->editing = FALSE;
+
+	g_object_set (G_OBJECT (view->priv->editable_renderer),
+                      "editable", FALSE,
+                      NULL);
+
+	path = gtk_tree_path_new_from_string (path_str);
+	gtk_tree_model_get_iter (view->priv->sortmodel, &iter, path);
+	gtk_tree_model_sort_convert_iter_to_child_iter
+		(GTK_TREE_MODEL_SORT (view->priv->sortmodel), &iter2, &iter);
+	egg_tree_model_filter_convert_iter_to_child_iter
+		(EGG_TREE_MODEL_FILTER (view->priv->filtermodel), &iter, &iter2);
+	node = ephy_tree_model_node_node_from_iter (view->priv->nodemodel, &iter);
+
+	g_value_init (&value, G_TYPE_STRING);
+	g_value_set_string (&value, new_text);
+	ephy_node_set_property (node,
+			        view->priv->editable_property,
+			        &value);
+	g_value_unset (&value);
+}
+
+static int
+ephy_node_view_sort_func (GtkTreeModel *model,
+			  GtkTreeIter *a,
+			  GtkTreeIter *b,
+			  gpointer user_data)
+{
+	GList *order;
+	GList *l;
+	int retval = 0;
+
+	g_return_val_if_fail (model != NULL, 0);
+	g_return_val_if_fail (user_data != NULL, 0);
+
+	order = (GList *) user_data;
+
+	for (l = order; l != NULL && retval == 0; l = g_list_next (l))
+	{
+		EphyTreeModelNodeColumn column = GPOINTER_TO_INT (l->data);
+		GType type = gtk_tree_model_get_column_type (model, column);
+		GValue a_value = {0, };
+		GValue b_value = {0, };
+		gchar *stra, *strb;
+
+		gtk_tree_model_get_value (model, a, column, &a_value);
+		gtk_tree_model_get_value (model, b, column, &b_value);
+
+		switch (G_TYPE_FUNDAMENTAL (type))
+		{
+		case G_TYPE_STRING:
+			stra = g_utf8_casefold (g_value_get_string (&a_value), -1);
+			strb = g_utf8_casefold (g_value_get_string (&b_value), -1);
+			g_return_val_if_fail (stra != NULL || strb != NULL, 0);
+			retval = g_utf8_collate (stra, strb);
+			g_free (stra);
+			g_free (strb);
+			break;
+		case G_TYPE_INT:
+			if (g_value_get_int (&a_value) < g_value_get_int (&b_value))
+				retval = -1;
+			else if (g_value_get_int (&a_value) == g_value_get_int (&b_value))
+				retval = 0;
+			else
+				retval = 1;
+			break;
+		case G_TYPE_BOOLEAN:
+			if (g_value_get_boolean (&a_value) < g_value_get_boolean (&b_value))
+				retval = -1;
+			else if (g_value_get_boolean (&a_value) == g_value_get_boolean (&b_value))
+				retval = 0;
+			else
+				retval = 1;
+			break;
+		default:
+			g_warning ("Attempting to sort on invalid type %s\n", g_type_name (type));
+			break;
+		}
+
+		g_value_unset (&a_value);
+		g_value_unset (&b_value);
+	}
+
+	return retval;
+
+}
+
+static gboolean
+set_sort_column_id (EphyNodeView *view)
+{
+	GList *sort_order = NULL;
+	sort_order = g_list_append (sort_order, GINT_TO_POINTER (view->priv->priority_column_id));
+	sort_order = g_list_append (sort_order, GINT_TO_POINTER (view->priv->default_sort_column_id));
+
+	gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (view->priv->sortmodel),
+			GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID,
+			GTK_SORT_ASCENDING);
+	gtk_tree_sortable_set_default_sort_func (GTK_TREE_SORTABLE (view->priv->sortmodel),
+			ephy_node_view_sort_func,
+			sort_order,
+			(GtkDestroyNotify) g_list_free);
+
+	return FALSE;
+}
+
+static void
+provide_priority (EphyNode *node, GValue *value, EphyNodeView *view)
+{
+	int priority;
+
+	g_value_init (value, G_TYPE_INT);
+	priority = ephy_node_get_property_int (node, view->priv->priority_prop_id);
+	if (priority == EPHY_NODE_VIEW_ALL_PRIORITY ||
+	    priority == EPHY_NODE_VIEW_SPECIAL_PRIORITY)
+		g_value_set_int (value, priority);
+	else
+		g_value_set_int (value, EPHY_NODE_VIEW_NORMAL_PRIORITY);
+}
+
+static void
+provide_text_weight (EphyNode *node, GValue *value, EphyNodeView *view)
+{
+	int priority;
+
+	g_value_init (value, G_TYPE_INT);
+	priority = ephy_node_get_property_int
+		(node, view->priv->priority_prop_id);
+	if (priority == EPHY_NODE_VIEW_ALL_PRIORITY ||
+	    priority == EPHY_NODE_VIEW_SPECIAL_PRIORITY)
+		g_value_set_int (value, PANGO_WEIGHT_BOLD);
+	else
+		g_value_set_int (value, PANGO_WEIGHT_NORMAL);
+}
+
+GtkTreeViewColumn *
+ephy_node_view_add_column (EphyNodeView *view,
+			   const char  *title,
+			   GType value_type,
+			   int prop_id,
+			   int priority_prop_id,
+			   gboolean editable,
+			   gboolean sortable)
+{
+	GtkTreeViewColumn *gcolumn;
+	GtkCellRenderer *renderer;
+	int column;
+
+	g_return_val_if_fail (!editable || view->priv->editable_renderer == NULL, NULL);
+
+	column = ephy_tree_model_node_add_prop_column
+		(view->priv->nodemodel, value_type, prop_id);
+
+	gcolumn = (GtkTreeViewColumn *) gtk_tree_view_column_new ();
+	renderer = gtk_cell_renderer_text_new ();
+
+	if (editable)
+	{
+		view->priv->editable_renderer = renderer;
+		view->priv->editable_column = gcolumn;
+		view->priv->editable_node_column = column;
+		g_signal_connect (renderer, "edited", G_CALLBACK (cell_renderer_edited), view);
+	}
+
+	gtk_tree_view_column_pack_start (gcolumn, renderer, TRUE);
+	gtk_tree_view_column_set_attributes (gcolumn, renderer,
+					     "text", column,
+					     NULL);
+	if (priority_prop_id > 0)
+	{
+		int wcol;
+
+		wcol = ephy_tree_model_node_add_func_column
+			(view->priv->nodemodel, G_TYPE_INT,
+			 (EphyTreeModelNodeValueFunc) provide_text_weight,
+			 view);
+		gtk_tree_view_column_add_attribute (gcolumn, renderer,
+						    "weight", wcol);
+	}
+
+	gtk_tree_view_column_set_sizing (gcolumn,
+					 GTK_TREE_VIEW_COLUMN_AUTOSIZE);
+	gtk_tree_view_column_set_title (gcolumn, title);
+	gtk_tree_view_append_column (GTK_TREE_VIEW (view),
+				     gcolumn);
+
+	if (sortable)
+	{
+		int scol;
+
+		scol = ephy_tree_model_node_add_func_column
+			(view->priv->nodemodel, G_TYPE_INT,
+			 (EphyTreeModelNodeValueFunc) provide_priority,
+			 view);
+		view->priv->priority_column_id = scol;
+
+		view->priv->priority_prop_id = priority_prop_id;
+		view->priv->default_sort_column_id = column;
+		g_idle_add ((GSourceFunc) set_sort_column_id, view);
+	}
+
+	return gcolumn;
+}
+
+void
+ephy_node_view_add_icon_column (EphyNodeView *view,
+			        EphyTreeModelNodeValueFunc func)
+{
+	GtkTreeViewColumn *gcolumn;
+	GtkCellRenderer *renderer;
+	int column;
+
+	column = ephy_tree_model_node_add_func_column
+                 (view->priv->nodemodel, GDK_TYPE_PIXBUF, func, NULL);
+
+	gcolumn = (GtkTreeViewColumn *) gtk_tree_view_column_new ();
+	renderer = gtk_cell_renderer_pixbuf_new ();
+	gtk_tree_view_column_pack_start (gcolumn, renderer, TRUE);
+	gtk_tree_view_column_set_attributes (gcolumn, renderer,
+					     "pixbuf", column,
+					     NULL);
+	gtk_tree_view_column_set_sizing (gcolumn,
+					 GTK_TREE_VIEW_COLUMN_GROW_ONLY);
+	gtk_tree_view_append_column (GTK_TREE_VIEW (view),
+				     gcolumn);
+}
+
+static void
+ephy_node_view_init (EphyNodeView *view)
+{
+	view->priv = g_new0 (EphyNodeViewPrivate, 1);
+	view->priv->editable_renderer = NULL;
+	view->priv->editing = TRUE;
+	view->priv->selected_node = NULL;
+}
+
+static void
+get_selection (GtkTreeModel *model,
+	       GtkTreePath *path,
+	       GtkTreeIter *iter,
+	       void **data)
+{
+	GtkTreeModelSort *sortmodel = GTK_TREE_MODEL_SORT (model);
+	EggTreeModelFilter *filtermodel = EGG_TREE_MODEL_FILTER (sortmodel->child_model);
+	EphyTreeModelNode *nodemodel = EPHY_TREE_MODEL_NODE (filtermodel->child_model);
+	GList **list = (GList **) data;
+	GtkTreeIter *iter2 = gtk_tree_iter_copy (iter);
+	GtkTreeIter iter3;
+	GtkTreeIter iter4;
+	EphyNode *node;
+
+	gtk_tree_model_sort_convert_iter_to_child_iter (GTK_TREE_MODEL_SORT (model),
+							&iter3, iter2);
+	egg_tree_model_filter_convert_iter_to_child_iter (filtermodel, &iter4, &iter3);
+
+	node = ephy_tree_model_node_node_from_iter (nodemodel, &iter4);
+
+	gtk_tree_iter_free (iter2);
+
+	*list = g_list_prepend (*list, node);
+}
+
+GList *
+ephy_node_view_get_selection (EphyNodeView *view)
+{
+	GList *list = NULL;
+	GtkTreeSelection *selection;
+
+	if (view->priv->selected_node)
+	{
+		list = g_list_append (list, view->priv->selected_node);
+	}
+	else
+	{
+		selection = gtk_tree_view_get_selection
+			(GTK_TREE_VIEW (view));
+
+		gtk_tree_selection_selected_foreach
+			(selection,
+			 (GtkTreeSelectionForeachFunc) get_selection,
+			 (void **) &list);
+	}
+
+	return list;
+}
+
+void
+ephy_node_view_remove (EphyNodeView *view)
+{
+	GList *list;
+	EphyNode *node;
+	GtkTreeIter iter, iter2;
+	GtkTreePath *path;
+
+	/* Before removing we try to select the next node in the view. If that is
+	 * not available we try with the previous one, and if that is absent too,
+	 * we do not select anything (which equals to select the topic "All")
+	 */
+
+	list = ephy_node_view_get_selection (view);
+	g_return_if_fail (list != NULL);
+	node = EPHY_NODE ((g_list_last (list))->data);
+	ephy_tree_model_node_iter_from_node (EPHY_TREE_MODEL_NODE (view->priv->nodemodel),
+					     node, &iter);
+	egg_tree_model_filter_convert_child_iter_to_iter (EGG_TREE_MODEL_FILTER (view->priv->filtermodel),
+							  &iter2, &iter);
+	gtk_tree_model_sort_convert_child_iter_to_iter (GTK_TREE_MODEL_SORT (view->priv->sortmodel),
+							&iter, &iter2);
+	iter2 = iter;
+	
+	if (gtk_tree_model_iter_next (GTK_TREE_MODEL (view->priv->sortmodel), &iter))
+	{
+		path = gtk_tree_model_get_path (GTK_TREE_MODEL (view->priv->sortmodel), &iter);
+		gtk_tree_view_set_cursor (GTK_TREE_VIEW (view), path, NULL, FALSE);
+		gtk_tree_path_free (path);
+	}
+	else
+	{
+		path = gtk_tree_model_get_path (GTK_TREE_MODEL (view->priv->sortmodel), &iter2);
+		if (gtk_tree_path_prev (path))
+		{
+			gtk_tree_view_set_cursor (GTK_TREE_VIEW (view), path, NULL, FALSE);
+		}
+		gtk_tree_path_free (path);
+	}
+
+	for (; list != NULL; list = list->next)
+	{
+		ephy_node_unref (EPHY_NODE (list->data));
+	}
+
+	g_list_free (list);
+}
+
+void
+ephy_node_view_select_node (EphyNodeView *view,
+			    EphyNode *node)
+{
+	GtkTreeIter iter, iter2;
+	GValue val = { 0, };
+	gboolean visible;
+	GtkTreeSelection *selection;
+	GtkTreePath *path;
+
+	selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (view));
+
+	g_return_if_fail (node != NULL);
+
+	ephy_tree_model_node_iter_from_node (EPHY_TREE_MODEL_NODE (view->priv->nodemodel),
+					     node, &iter);
+	gtk_tree_model_get_value (GTK_TREE_MODEL (view->priv->nodemodel), &iter,
+				  EPHY_TREE_MODEL_NODE_COL_VISIBLE, &val);
+	visible = g_value_get_boolean (&val);
+	g_value_unset (&val);
+	if (visible == FALSE) return;
+
+	egg_tree_model_filter_convert_child_iter_to_iter (EGG_TREE_MODEL_FILTER (view->priv->filtermodel),
+							  &iter2, &iter);
+	gtk_tree_model_sort_convert_child_iter_to_iter (GTK_TREE_MODEL_SORT (view->priv->sortmodel),
+							&iter, &iter2);
+
+	path = gtk_tree_model_get_path (GTK_TREE_MODEL (view->priv->sortmodel), &iter);
+	gtk_tree_view_set_cursor (GTK_TREE_VIEW (view),
+				  path, NULL, FALSE);
+	gtk_tree_path_free (path);
+}
+
+void
+ephy_node_view_enable_drag_source (EphyNodeView *view,
+				   GtkTargetEntry *types,
+				   int n_types,
+				   guint prop_id)
+{
+	GtkWidget *treeview;
+
+	g_return_if_fail (view != NULL);
+
+	treeview = GTK_WIDGET (view);
+
+	egg_tree_multi_drag_add_drag_support (GTK_TREE_VIEW (treeview));
+
+	gtk_tree_view_enable_model_drag_source (GTK_TREE_VIEW (treeview),
+						GDK_BUTTON1_MASK,
+						types, n_types,
+						GDK_ACTION_COPY);
+
+	ephy_tree_model_sort_set_drag_property (EPHY_TREE_MODEL_SORT (view->priv->sortmodel),
+						prop_id);
+}
+
+void
+ephy_node_view_edit (EphyNodeView *view)
+{
+	GtkTreeSelection *selection;
+	GList *rows;
+	GtkTreeModel *model;
+
+	g_return_if_fail (view->priv->editable_renderer != NULL);
+
+	selection = gtk_tree_view_get_selection
+		(GTK_TREE_VIEW (view));
+	rows = gtk_tree_selection_get_selected_rows (selection, &model);
+	if (rows == NULL) return;
+
+	g_object_set (G_OBJECT (view->priv->editable_renderer),
+                      "editable", TRUE,
+                      NULL);
+
+	gtk_tree_view_set_cursor (GTK_TREE_VIEW (view),
+                                  (GtkTreePath *)rows->data,
+                                  view->priv->editable_column,
+                                  TRUE);
+
+	view->priv->editing = TRUE;
+
+	g_list_foreach (rows, (GFunc)gtk_tree_path_free, NULL);
+        g_list_free (rows);
+}
+
+gboolean
+ephy_node_view_is_editing (EphyNodeView *view,
+			   int property)
+{
+	view->priv->editable_property = property;
+
+	return view->priv->editing;
+}
+
+gboolean
+ephy_node_view_is_target (EphyNodeView *view)
+{
+	if (target_view == view)
+	{
+		return TRUE;
+	}
+	else if (target_view != NULL)
+	{
+		return FALSE;
+	}
+	else
+	{
+		return gtk_widget_is_focus (GTK_WIDGET (view));
+	}
+}
+
+gboolean
+ephy_node_view_has_selection (EphyNodeView *view, gboolean *multiple)
+{
+	GtkTreeSelection *selection;
+	int rows;
+
+	if (view->priv->selected_node)
+	{
+		rows = 1;
+	}
+	else
+	{
+		selection = gtk_tree_view_get_selection
+			(GTK_TREE_VIEW (view));
+
+		rows = gtk_tree_selection_count_selected_rows (selection);
+	}
+
+	if (multiple)
+	{
+		*multiple = rows > 1;
+	}
+
+	return rows > 0;
+}
+
+void
+ephy_node_view_enable_sort (EphyNodeView *view,
+			    GtkTreeIterCompareFunc sort_func,
+			    gpointer data,
+			    GtkDestroyNotify destroy)
+{
+	gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (view->priv->sortmodel),
+					      GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID,
+					      GTK_SORT_ASCENDING);
+	gtk_tree_sortable_set_default_sort_func (GTK_TREE_SORTABLE (view->priv->sortmodel),
+						 sort_func, data, destroy);
+}