Added duplicate_value and add_value. Use the new compare functions. Made

2000-02-24  Christopher James Lahey  <clahey@helixcode.com>

        * test-table.c: Added duplicate_value and add_value.  Use the new
        compare functions.  Made it so we only create one model to better
        test model view stuff.  Changed the test to not have as many
        extra, useless, columns.

        * test-cols.c, test-check.c: Added duplicate_value and add_value.  Use the new
        compare functions.

        * e-table.c, e-table.h: Use all the new features of e-table-groups
        (sorting and grouping).  Handle on the fly reorganization of
        groups in an idle loop.  Compare functions now are to return -1 if
        the first item is greater, 0 if they are equal, or 1 if the second
        item is greater.

        * e-table-subset.c, e-table-subset.h: Made e-table-subset
        disconnect properly from its signals when it dies.

        * e-table-subset-variable.c, e-table-subset-variable.h:
        Virtualized the add and remove commands so that
        e_table_sorted_variable could override the add command to do sorting.

        * e-table-sorted.c: Fixed this to inherit properly from
        ETableSubset.

        * e-table-simple.h, e-table-simple.c: Added handling of
        duplicate_value and free_value;

        * e-table-model.c, e-table-model.h: Added duplicate_value and
        free_value for memory allocation of table elements outside the
        table.

        * e-table-item.c: Fixed a crashing bug.

        * e-table-group.c: Added sorting.  Fixed destruction to delete the
        right things.

        * e-table-group-leaf.c, e-table-group-leaf.h: Pass column and sort
        order information into the e_table_sorted_variable.  Properly
        destroy things when deleted.

        * e-table-group-container.c, e-table-group-container.h: Properly
        handle the list of subgroups.  Handle proper sorting and grouping
        of subgroups.

        * e-table-sorted-variable.c, e-table-sorted-variable.h: Files to
        do a sorted model that stays sorted as you add and remove rows.

        * Makefile.am: Added e-table-sorted-variable.c and
        e-table-sorted-variable.h.

svn path=/trunk/; revision=1930

24 files changed, 704 insertions, 95 deletions

diff --git a/widgets/e-table/ChangeLog b/widgets/e-table/ChangeLog
index e4caa9707c..4c4a9d65cd 100644
--- a/widgets/e-table/ChangeLog
+++ b/widgets/e-table/ChangeLog
@@ -1,5 +1,57 @@
 2000-02-24  Christopher James Lahey  <clahey@helixcode.com>
 
+	* test-table.c: Added duplicate_value and add_value.  Use the new
+	compare functions.  Made it so we only create one model to better
+	test model view stuff.  Changed the test to not have as many
+	extra, useless, columns.
+
+	* test-cols.c, test-check.c: Added duplicate_value and add_value.  Use the new
+	compare functions.
+
+	* e-table.c, e-table.h: Use all the new features of e-table-groups
+	(sorting and grouping).  Handle on the fly reorganization of
+	groups in an idle loop.  Compare functions now are to return -1 if
+	the first item is greater, 0 if they are equal, or 1 if the second
+	item is greater.
+
+	* e-table-subset.c, e-table-subset.h: Made e-table-subset
+	disconnect properly from its signals when it dies.
+
+	* e-table-subset-variable.c, e-table-subset-variable.h:
+	Virtualized the add and remove commands so that
+	e_table_sorted_variable could override the add command to do sorting.
+
+	* e-table-sorted.c: Fixed this to inherit properly from
+	ETableSubset.
+
+	* e-table-simple.h, e-table-simple.c: Added handling of
+	duplicate_value and free_value;
+
+	* e-table-model.c, e-table-model.h: Added duplicate_value and
+	free_value for memory allocation of table elements outside the
+	table.
+
+	* e-table-item.c: Fixed a crashing bug.
+
+	* e-table-group.c: Added sorting.  Fixed destruction to delete the
+	right things.
+
+	* e-table-group-leaf.c, e-table-group-leaf.h: Pass column and sort
+	order information into the e_table_sorted_variable.  Properly
+	destroy things when deleted.
+
+	* e-table-group-container.c, e-table-group-container.h: Properly
+	handle the list of subgroups.  Handle proper sorting and grouping
+	of subgroups.
+
+	* e-table-sorted-variable.c, e-table-sorted-variable.h: Files to
+	do a sorted model that stays sorted as you add and remove rows.
+
+	* Makefile.am: Added e-table-sorted-variable.c and
+	e-table-sorted-variable.h.
+
+2000-02-24  Christopher James Lahey  <clahey@helixcode.com>
+
 	* e-table-item.c: Made keyboard focus navigation work across
 	groups.
 
diff --git a/widgets/e-table/Makefile.am b/widgets/e-table/Makefile.am
index 0780ae7c57..c6fe615258 100644
--- a/widgets/e-table/Makefile.am
+++ b/widgets/e-table/Makefile.am
@@ -39,6 +39,8 @@ libetable_a_SOURCES = 				\
 	e-table-simple.h			\
 	e-table-sorted.c			\
 	e-table-sorted.h			\
+	e-table-sorted-variable.c		\
+	e-table-sorted-variable.h		\
 	e-table-subset.c			\
 	e-table-subset.h			\
 	e-table-subset-variable.c		\
diff --git a/widgets/e-table/e-table-group-container.c b/widgets/e-table/e-table-group-container.c
index 634d7934ef..4b30f6af29 100644
--- a/widgets/e-table/e-table-group-container.c
+++ b/widgets/e-table/e-table-group-container.c
@@ -60,14 +60,41 @@ typedef struct {
 } ETableGroupContainerChildNode;
 
 static void
+e_table_group_container_child_node_free(ETableGroupContainer *etgc, ETableGroupContainerChildNode *child_node)
+{
+	ETableGroup *etg = E_TABLE_GROUP(etgc);
+	ETableGroup *child = child_node->child;
+	gtk_object_destroy(GTK_OBJECT(child));
+	e_table_model_free_value(etg->model, etgc->ecol->col_idx, child_node->key);
+	gtk_object_destroy(GTK_OBJECT(child_node->text));
+	gtk_object_destroy(GTK_OBJECT(child_node->rect));
+}
+
+static void
+e_table_group_container_list_free(ETableGroupContainer *etgc)
+{
+	ETableGroupContainerChildNode *child_node;
+	GList *list;
+	for ( list = etgc->children; list; list = g_list_next(list) ) {
+		child_node = (ETableGroupContainerChildNode *) list->data;
+		e_table_group_container_child_node_free(etgc, child_node);
+	}
+	g_list_free(etgc->children);
+}
+
+static void
 etgc_destroy (GtkObject *object)
 {
 	ETableGroupContainer *etgc = E_TABLE_GROUP_CONTAINER (object);
 
 	gdk_font_unref(etgc->font);
+	gtk_object_unref(GTK_OBJECT(etgc->ecol));
+	gtk_object_destroy(GTK_OBJECT(etgc->rect));
+	e_table_group_container_list_free(etgc);
 
 	GTK_OBJECT_CLASS (etgc_parent_class)->destroy (object);
 }
+
 #if 0
 void
 e_table_group_add (ETableGroup *etg, GnomeCanvasItem *item)
@@ -168,11 +195,13 @@ void
 e_table_group_container_construct (GnomeCanvasGroup *parent, ETableGroupContainer *etgc,
 				   ETableHeader *full_header,
 				   ETableHeader     *header,
-				   ETableModel *model, ETableCol *ecol, xmlNode *child_rules)
+				   ETableModel *model, ETableCol *ecol, int ascending, xmlNode *child_rules)
 {
 	e_table_group_construct (parent, E_TABLE_GROUP (etgc), full_header, header, model);
 	etgc->ecol = ecol;
+	gtk_object_ref(GTK_OBJECT(etgc->ecol));
 	etgc->child_rules = child_rules;
+	etgc->ascending = ascending;
 	
 	etgc->font = gdk_font_load ("lucidasans-10");
 #if 0
@@ -217,7 +246,7 @@ e_table_group_container_construct (GnomeCanvasGroup *parent, ETableGroupContaine
 ETableGroup *
 e_table_group_container_new       (GnomeCanvasGroup *parent, ETableHeader *full_header,
 				   ETableHeader     *header,
-				   ETableModel *model, ETableCol *ecol, xmlNode *child_rules)
+				   ETableModel *model, ETableCol *ecol, int ascending, xmlNode *child_rules)
 {
 	ETableGroupContainer *etgc;
 
@@ -227,7 +256,7 @@ e_table_group_container_new       (GnomeCanvasGroup *parent, ETableHeader *full_
 	etgc = gtk_type_new (e_table_group_container_get_type ());
 
 	e_table_group_container_construct (parent, etgc, full_header, header,
-					   model, ecol, child_rules);
+					   model, ecol, ascending, child_rules);
 	return E_TABLE_GROUP (etgc);
 }
 
@@ -498,15 +527,21 @@ static void etgc_add (ETableGroup *etg, gint row)
 	GList *list = etgc->children;
 	ETableGroup *child;
 	ETableGroupContainerChildNode *child_node;
-	for ( ; list; list = g_list_next(list) ) {
+	int i = 0;
+	for ( ; list; list = g_list_next(list), i++ ) {
+		int comp_val;
 		child_node = (ETableGroupContainerChildNode *)(list->data);
-		if ( (*comp)(child_node->key, val) ) {
+		comp_val = (*comp)(child_node->key, val);
+		if ( comp_val == 0 ) {
 			child = child_node->child;
 			child_node->count ++;
 			e_table_group_add(child, row);
 			compute_text(etgc, child_node);
 			return;
 		}
+		if ( (comp_val > 0 && etgc->ascending) ||
+		     (comp_val < 0 && (!etgc->ascending)) )
+			break;
 	}
 	child_node = g_new(ETableGroupContainerChildNode, 1);
 	child_node->rect = gnome_canvas_item_new(GNOME_CANVAS_GROUP(etgc),
@@ -524,13 +559,17 @@ static void etgc_add (ETableGroup *etg, gint row)
 						 NULL);
 	child = e_table_group_new(GNOME_CANVAS_GROUP(etgc), etg->full_header, etg->header, etg->model, etgc->child_rules);
 	child_node->child = child;
-	child_node->key = val;
+	child_node->key = e_table_model_duplicate_value(etg->model, etgc->ecol->col_idx, val);
 
 	gtk_signal_connect(GTK_OBJECT(child), "resize",
 			   etgc_child_resize, etgc);
 	child_node->count = 1;
 	e_table_group_add(child, row);
-	etgc->children = g_list_append(etgc->children, child_node);
+	if ( list ) {
+		etgc->children = g_list_insert(etgc->children, child_node, i);
+	}
+	else
+		etgc->children = g_list_append(etgc->children, child_node);
 	compute_text(etgc, child_node);
 	etgc_queue_reposition(E_TABLE_GROUP_CONTAINER(etg));
 }
@@ -545,8 +584,7 @@ static gboolean etgc_remove (ETableGroup *etg, gint row)
 		if ( e_table_group_remove(child, row) ) {
 			child_node->count --;
 			if ( child_node->count == 0 ) {
-				gtk_object_unref(GTK_OBJECT(child_node->text));
-				gtk_object_unref(GTK_OBJECT(child));
+				e_table_group_container_child_node_free(etgc, child_node);
 				etgc->children = g_list_remove(etgc->children, child_node);
 				g_free(child_node);
 			} else {
diff --git a/widgets/e-table/e-table-group-container.h b/widgets/e-table/e-table-group-container.h
index 4942f9e695..2234e77ac1 100644
--- a/widgets/e-table/e-table-group-container.h
+++ b/widgets/e-table/e-table-group-container.h
@@ -20,6 +20,7 @@ typedef struct {
 	 * The ETableCol used to group this set
 	 */
 	ETableCol    *ecol;
+	gint          ascending;
 
 	/*
 	 * List of ETableGroups we stack
@@ -55,11 +56,11 @@ typedef struct {
 } ETableGroupContainerClass;
 
 ETableGroup *e_table_group_container_new       (GnomeCanvasGroup *parent, ETableHeader *full_header, ETableHeader     *header,
-						ETableModel *model, ETableCol *ecol, xmlNode *child_rules);
+						ETableModel *model, ETableCol *ecol, int ascending, xmlNode *child_rules);
 void         e_table_group_container_construct (GnomeCanvasGroup *parent, ETableGroupContainer *etgc,
 						ETableHeader *full_header,
 						ETableHeader     *header,
-						ETableModel *model, ETableCol *ecol, xmlNode *child_rules);
+						ETableModel *model, ETableCol *ecol, int ascending, xmlNode *child_rules);
 
 GtkType      e_table_group_container_get_type  (void);
 
diff --git a/widgets/e-table/e-table-group-leaf.c b/widgets/e-table/e-table-group-leaf.c
index ba73ad9886..2e939453d7 100644
--- a/widgets/e-table/e-table-group-leaf.c
+++ b/widgets/e-table/e-table-group-leaf.c
@@ -36,23 +36,31 @@ static void etgl_get_arg (GtkObject *object, GtkArg *arg, guint arg_id);
 static void
 etgl_destroy (GtkObject *object)
 {
-	GTK_OBJECT_CLASS (etgl_parent_class)->destroy (object);
+	ETableGroupLeaf *etgl = E_TABLE_GROUP_LEAF(object);
+	gtk_object_unref(GTK_OBJECT(etgl->subset));
+	gtk_object_destroy(GTK_OBJECT(etgl->item));
+	if ( GTK_OBJECT_CLASS (etgl_parent_class)->destroy )
+		GTK_OBJECT_CLASS (etgl_parent_class)->destroy (object);
 }
 
 static void
 e_table_group_leaf_construct (GnomeCanvasGroup *parent, ETableGroupLeaf *etgl,
 			      ETableHeader *full_header,
 			      ETableHeader     *header,
-			      ETableModel *model)
+			      ETableModel *model,
+			      int          col,
+			      int          ascending)
 {
+	etgl->subset = E_TABLE_SUBSET_VARIABLE(e_table_sorted_variable_new(model, col, ascending, e_table_header_get_column(full_header, col)->compare));
 	e_table_group_construct (parent, E_TABLE_GROUP (etgl), full_header, header, model);
-	etgl->subset = E_TABLE_SUBSET_VARIABLE(e_table_subset_variable_new(model));
 }
 
 ETableGroup *
 e_table_group_leaf_new       (GnomeCanvasGroup *parent, ETableHeader *full_header,
 			      ETableHeader     *header,
-			      ETableModel *model)
+			      ETableModel *model,
+			      int          col,
+			      int          ascending)
 {
 	ETableGroupLeaf *etgl;
 
@@ -61,7 +69,7 @@ e_table_group_leaf_new       (GnomeCanvasGroup *parent, ETableHeader *full_heade
 	etgl = gtk_type_new (e_table_group_leaf_get_type ());
 
 	e_table_group_leaf_construct (parent, etgl, full_header,
-				      header, model);
+				      header, model, col, ascending);
 	return E_TABLE_GROUP (etgl);
 }
 
diff --git a/widgets/e-table/e-table-group-leaf.h b/widgets/e-table/e-table-group-leaf.h
index 372bf4cc70..6ffd9066d1 100644
--- a/widgets/e-table/e-table-group-leaf.h
+++ b/widgets/e-table/e-table-group-leaf.h
@@ -4,7 +4,7 @@
 
 #include <libgnomeui/gnome-canvas.h>
 #include "e-table-group.h"
-#include "e-table-subset-variable.h"
+#include "e-table-sorted-variable.h"
 #include "e-table-item.h"
 
 #define E_TABLE_GROUP_LEAF_TYPE        (e_table_group_leaf_get_type ())
@@ -33,7 +33,9 @@ typedef struct {
 ETableGroup *e_table_group_leaf_new       (GnomeCanvasGroup *parent,
 					   ETableHeader *full_header,
 					   ETableHeader     *header,
-					   ETableModel *model);
+					   ETableModel *model,
+					   int          col,
+					   int          ascending);
 GtkType          e_table_group_leaf_get_type  (void);
 
 #endif /* _E_TABLE_GROUP_LEAF_H_ */
diff --git a/widgets/e-table/e-table-group.c b/widgets/e-table/e-table-group.c
index 1f4e2037cd..6ae8a25db7 100644
--- a/widgets/e-table/e-table-group.c
+++ b/widgets/e-table/e-table-group.c
@@ -17,6 +17,7 @@
 #include <libgnomeui/gnome-canvas-rect-ellipse.h>
 #include <gnome-xml/parser.h>
 #include "e-util/e-util.h"
+#include "e-util/e-xml-utils.h"
 
 #define TITLE_HEIGHT         16
 #define GROUP_INDENT         10
@@ -45,7 +46,7 @@ enum {
 static void etg_set_arg (GtkObject *object, GtkArg *arg, guint arg_id);
 static void etg_get_arg (GtkObject *object, GtkArg *arg, guint arg_id);
 static gboolean etg_get_focus (ETableGroup      *etg);
-
+static void etg_destroy (GtkObject *object);
 #if 0
 GnomeCanvasItem *
 e_table_group_new (GnomeCanvasGroup *parent, ETableCol *ecol, 
@@ -64,6 +65,17 @@ e_table_group_new (GnomeCanvasGroup *parent, ETableCol *ecol,
 }
 #endif
 
+static void
+etg_destroy (GtkObject *object)
+{
+	ETableGroup *etg = E_TABLE_GROUP(object);
+	gtk_object_unref(GTK_OBJECT(etg->header));
+	gtk_object_unref(GTK_OBJECT(etg->full_header));
+	gtk_object_unref(GTK_OBJECT(etg->model));
+	if ( GTK_OBJECT_CLASS (etg_parent_class)->destroy )
+		GTK_OBJECT_CLASS (etg_parent_class)->destroy (object);
+}
+
 ETableGroup *
 e_table_group_new (GnomeCanvasGroup *parent,
 		   ETableHeader     *full_header,
@@ -71,17 +83,22 @@ e_table_group_new (GnomeCanvasGroup *parent,
 		   ETableModel      *model,
 		   xmlNode          *rules)
 {
+	int column;
+	int ascending;
+
 	g_return_val_if_fail (model != NULL, NULL);
-	
+
+	column = e_xml_get_integer_prop_by_name(rules, "column");
+	ascending = e_xml_get_integer_prop_by_name(rules, "ascending");
+
 	if(rules && !xmlStrcmp(rules->name, "group")) {
-		gint col_idx = atoi(xmlGetProp(rules, "column"));
 		ETableCol *col;
-		if ( col_idx > e_table_header_count(full_header) )
-			return e_table_group_leaf_new(parent, full_header, header, model);
-		col = e_table_header_get_columns(full_header)[col_idx];
-		return e_table_group_container_new(parent, full_header, header, model, col, rules->childs);
+		if ( column > e_table_header_count(full_header) )
+			return e_table_group_leaf_new(parent, full_header, header, model, column, ascending);
+		col = e_table_header_get_columns(full_header)[column];
+		return e_table_group_container_new(parent, full_header, header, model, col, ascending, rules->childs);
 	} else {
-		return e_table_group_leaf_new(parent, full_header, header, model);
+		return e_table_group_leaf_new(parent, full_header, header, model, column, ascending);
 	}
 	return NULL;
 }
@@ -93,10 +110,13 @@ e_table_group_construct (GnomeCanvasGroup *parent,
 			 ETableHeader     *header,
 			 ETableModel      *model)
 {
-	gnome_canvas_item_constructv (GNOME_CANVAS_ITEM (etg), parent, 0, NULL);
 	etg->full_header = full_header;
+	gtk_object_ref(GTK_OBJECT(etg->full_header));
 	etg->header = header;
+	gtk_object_ref(GTK_OBJECT(etg->header));
 	etg->model = model;
+	gtk_object_ref(GTK_OBJECT(etg->model));
+	gnome_canvas_item_constructv (GNOME_CANVAS_ITEM (etg), parent, 0, NULL);
 }
 
 void
@@ -311,6 +331,7 @@ etg_class_init (GtkObjectClass *object_class)
 	
 	object_class->set_arg = etg_set_arg;
 	object_class->get_arg = etg_get_arg;
+	object_class->destroy = etg_destroy;
 
 	item_class->event = etg_event;
 
diff --git a/widgets/e-table/e-table-item.c b/widgets/e-table/e-table-item.c
index 286b1a8352..a7d5573fad 100644
--- a/widgets/e-table/e-table-item.c
+++ b/widgets/e-table/e-table-item.c
@@ -307,6 +307,10 @@ static void
 eti_table_model_changed (ETableModel *table_model, ETableItem *eti)
 {
 	eti->rows = e_table_model_row_count (eti->table_model);
+	
+	if (eti->focused_row > eti->rows - 1) {
+		eti->focused_row = eti->rows - 1;
+	}
 
 	if (eti->cell_views)
 		eti_compute_height (eti);
diff --git a/widgets/e-table/e-table-model.c b/widgets/e-table/e-table-model.c
index e84e6da4d3..ef14b98018 100644
--- a/widgets/e-table/e-table-model.c
+++ b/widgets/e-table/e-table-model.c
@@ -13,6 +13,9 @@
 
 #define ETM_CLASS(e) ((ETableModelClass *)((GtkObject *)e)->klass)
 
+#define PARENT_TYPE gtk_object_get_type();
+					  
+
 static GtkObjectClass *e_table_model_parent_class;
 
 enum {
@@ -80,6 +83,28 @@ e_table_model_is_cell_editable (ETableModel *e_table_model, int col, int row)
 	return ETM_CLASS (e_table_model)->is_cell_editable (e_table_model, col, row);
 }
 
+void *
+e_table_model_duplicate_value (ETableModel *e_table_model, int col, const void *value)
+{
+	g_return_val_if_fail (e_table_model != NULL, NULL);
+	g_return_val_if_fail (E_IS_TABLE_MODEL (e_table_model), NULL);
+
+	if (ETM_CLASS (e_table_model)->duplicate_value)
+		return ETM_CLASS (e_table_model)->duplicate_value (e_table_model, col, value);
+	else
+		return NULL;
+}
+
+void
+e_table_model_free_value (ETableModel *e_table_model, int col, void *value)
+{
+	g_return_if_fail (e_table_model != NULL);
+	g_return_if_fail (E_IS_TABLE_MODEL (e_table_model));
+
+	if (ETM_CLASS (e_table_model)->free_value)
+		ETM_CLASS (e_table_model)->free_value (e_table_model, col, value);
+}
+
 static void
 e_table_model_destroy (GtkObject *object)
 {
@@ -121,27 +146,30 @@ e_table_model_class_init (GtkObjectClass *object_class)
 	gtk_object_class_add_signals (object_class, e_table_model_signals, LAST_SIGNAL);
 }
 
-GtkType
+
+guint
 e_table_model_get_type (void)
 {
-	static GtkType type = 0;
-
-	if (!type){
-		GtkTypeInfo info = {
-			"ETableModel",
-			sizeof (ETableModel),
-			sizeof (ETableModelClass),
-			(GtkClassInitFunc) e_table_model_class_init,
-			(GtkObjectInitFunc) NULL,
-			NULL, /* reserved 1 */
-			NULL, /* reserved 2 */
-			(GtkClassInitFunc) NULL
-		};
-
-		type = gtk_type_unique (gtk_object_get_type (), &info);
-	}
-
-	return type;
+  static guint type = 0;
+
+  if (!type)
+    {
+      GtkTypeInfo info =
+      {
+	"ETableModle",
+	sizeof (ETableModel),
+	sizeof (ETableModelClass),
+	(GtkClassInitFunc) e_table_model_class_init,
+	NULL,
+	/* reserved_1 */ NULL,
+        /* reserved_2 */ NULL,
+        (GtkClassInitFunc) NULL,
+      };
+
+      type = gtk_type_unique (gtk_object_get_type(), &info);
+    }
+
+  return type;
 }
 
 void
diff --git a/widgets/e-table/e-table-model.h b/widgets/e-table/e-table-model.h
index 9f2dbbf87c..ceca8e348f 100644
--- a/widgets/e-table/e-table-model.h
+++ b/widgets/e-table/e-table-model.h
@@ -27,6 +27,10 @@ typedef struct {
 	void       *(*value_at)         (ETableModel *etm, int col, int row);
 	void        (*set_value_at)     (ETableModel *etm, int col, int row, const void *value);
 	gboolean    (*is_cell_editable) (ETableModel *etm, int col, int row);
+
+	void       *(*duplicate_value)   (ETableModel *etm, int col, const void *value);
+	void        (*free_value)        (ETableModel *etm, int col, void *value);
+	
 	void        (*thaw)             (ETableModel *etm);
 	/*
 	 * Signals
@@ -48,9 +52,12 @@ int         e_table_model_column_count     (ETableModel *e_table_model);
 const char *e_table_model_column_name      (ETableModel *e_table_model, int col);
 int         e_table_model_row_count        (ETableModel *e_table_model);
 void       *e_table_model_value_at         (ETableModel *e_table_model, int col, int row);
-void        e_table_model_set_value_at     (ETableModel *e_table_model, int col, int row, const void *data);
+void        e_table_model_set_value_at     (ETableModel *e_table_model, int col, int row, const void *value);
 gboolean    e_table_model_is_cell_editable (ETableModel *e_table_model, int col, int row);
 
+void       *e_table_model_duplicate_value  (ETableModel *e_table_model, int col, const void *value);
+void        e_table_model_free_value       (ETableModel *e_table_model, int col, void *value);
+
 void        e_table_model_freeze           (ETableModel *e_table_model);
 void        e_table_model_thaw             (ETableModel *e_table_model);
 
diff --git a/widgets/e-table/e-table-simple.c b/widgets/e-table/e-table-simple.c
index 1f64d08f39..e90abfcc4f 100644
--- a/widgets/e-table/e-table-simple.c
+++ b/widgets/e-table/e-table-simple.c
@@ -55,6 +55,22 @@ simple_is_cell_editable (ETableModel *etm, int col, int row)
 	return simple->is_cell_editable (etm, col, row, simple->data);
 }
 
+static void *
+simple_duplicate_value (ETableModel *etm, int col, const void *value)
+{
+	ETableSimple *simple = (ETableSimple *)etm;
+
+	return simple->duplicate_value (etm, col, value, simple->data);
+}
+
+static void
+simple_free_value (ETableModel *etm, int col, void *value)
+{
+	ETableSimple *simple = (ETableSimple *)etm;
+
+	simple->free_value (etm, col, value, simple->data);
+}
+
 static void
 simple_thaw (ETableModel *etm)
 {
@@ -73,6 +89,8 @@ e_table_simple_class_init (GtkObjectClass *object_class)
 	model_class->value_at = simple_value_at;
 	model_class->set_value_at = simple_set_value_at;
 	model_class->is_cell_editable = simple_is_cell_editable;
+	model_class->duplicate_value = simple_duplicate_value;
+	model_class->free_value = simple_free_value;
 	model_class->thaw = simple_thaw;
 }
 
@@ -105,6 +123,8 @@ e_table_simple_new (ETableSimpleColumnCountFn col_count,
 		    ETableSimpleValueAtFn value_at,
 		    ETableSimpleSetValueAtFn set_value_at,
 		    ETableSimpleIsCellEditableFn is_cell_editable,
+		    ETableSimpleDuplicateValueFn duplicate_value,
+		    ETableSimpleFreeValueFn free_value,
 		    ETableSimpleThawFn thaw,
 		    void *data)
 {
@@ -118,6 +138,8 @@ e_table_simple_new (ETableSimpleColumnCountFn col_count,
 	et->set_value_at = set_value_at;
 	et->is_cell_editable = is_cell_editable;
 	et->thaw = thaw;
+	et->duplicate_value = duplicate_value;
+	et->free_value = free_value;
 	et->data = data;
 	
 	return (ETableModel *) et;
diff --git a/widgets/e-table/e-table-simple.h b/widgets/e-table/e-table-simple.h
index a3164eefc0..51134f45aa 100644
--- a/widgets/e-table/e-table-simple.h
+++ b/widgets/e-table/e-table-simple.h
@@ -9,6 +9,8 @@ typedef	int         (*ETableSimpleRowCountFn)       (ETableModel *etm, void *dat
 typedef	void       *(*ETableSimpleValueAtFn)        (ETableModel *etm, int col, int row, void *data);
 typedef	void        (*ETableSimpleSetValueAtFn)     (ETableModel *etm, int col, int row, const void *val, void *data);
 typedef	gboolean    (*ETableSimpleIsCellEditableFn) (ETableModel *etm, int col, int row, void *data);
+typedef	void       *(*ETableSimpleDuplicateValueFn) (ETableModel *etm, int col, const void *val, void *data);
+typedef	void        (*ETableSimpleFreeValueFn)      (ETableModel *etm, int col, void *val, void *data);
 typedef void        (*ETableSimpleThawFn)           (ETableModel *etm, void *data);
 
 typedef struct {
@@ -19,6 +21,8 @@ typedef struct {
 	ETableSimpleValueAtFn        value_at;
 	ETableSimpleSetValueAtFn     set_value_at;
 	ETableSimpleIsCellEditableFn is_cell_editable;
+	ETableSimpleDuplicateValueFn duplicate_value;
+	ETableSimpleFreeValueFn      free_value;
 	ETableSimpleThawFn           thaw;
 	void *data;
 } ETableSimple;
@@ -34,6 +38,8 @@ ETableModel *e_table_simple_new (ETableSimpleColumnCountFn col_count,
 				 ETableSimpleValueAtFn value_at,
 				 ETableSimpleSetValueAtFn set_value_at,
 				 ETableSimpleIsCellEditableFn is_cell_editable,
+				 ETableSimpleDuplicateValueFn duplicate_value,
+				 ETableSimpleFreeValueFn free_value,
 				 ETableSimpleThawFn thaw,
 				 void *data);
 
diff --git a/widgets/e-table/e-table-sorted-variable.c b/widgets/e-table/e-table-sorted-variable.c
new file mode 100644
index 0000000000..478038fdb7
--- /dev/null
+++ b/widgets/e-table/e-table-sorted-variable.c
@@ -0,0 +1,148 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * E-table-sorted.c: Implements a table that sorts another table
+ *
+ * Author:
+ *   Miguel de Icaza (miguel@gnu.org)
+ *
+ * (C) 1999 Helix Code, Inc.
+ */
+#include <config.h>
+#include <stdlib.h>
+#include <gtk/gtksignal.h>
+#include <string.h>
+#include "e-util/e-util.h"
+#include "e-table-sorted-variable.h"
+
+#define PARENT_TYPE E_TABLE_SUBSET_VARIABLE_TYPE
+
+#define INCREMENT_AMOUNT 10
+
+static ETableSubsetVariableClass *etsv_parent_class;
+
+static void etsv_proxy_model_changed (ETableModel *etm, ETableSortedVariable *etsv);
+static void etsv_proxy_model_row_changed (ETableModel *etm, int row, ETableSortedVariable *etsv);
+static void etsv_proxy_model_cell_changed (ETableModel *etm, int col, int row, ETableSortedVariable *etsv);
+static void etsv_add       (ETableSubsetVariable *etssv, gint                  row);
+
+static void
+etsv_destroy (GtkObject *object)
+{
+	ETableSortedVariable *etsv = E_TABLE_SORTED_VARIABLE (object);
+	ETableSubset *etss = E_TABLE_SUBSET (object);
+
+	gtk_signal_disconnect (GTK_OBJECT (etss->source),
+			       etsv->table_model_changed_id);
+	gtk_signal_disconnect (GTK_OBJECT (etss->source),
+			       etsv->table_model_row_changed_id);
+	gtk_signal_disconnect (GTK_OBJECT (etss->source),
+			       etsv->table_model_cell_changed_id);
+
+	etsv->table_model_changed_id = 0;
+	etsv->table_model_row_changed_id = 0;
+	etsv->table_model_cell_changed_id = 0;
+
+	GTK_OBJECT_CLASS (etsv_parent_class)->destroy (object);
+}
+
+static void
+etsv_class_init (GtkObjectClass *object_class)
+{
+	ETableSubsetVariableClass *etssv_class = E_TABLE_SUBSET_VARIABLE_CLASS(object_class);
+
+	etsv_parent_class = gtk_type_class (PARENT_TYPE);
+
+	object_class->destroy = etsv_destroy;
+
+	etssv_class->add = etsv_add;
+}
+
+E_MAKE_TYPE(e_table_sorted_variable, "ETableSortedVariable", ETableSortedVariable, etsv_class_init, NULL, PARENT_TYPE);
+
+static void
+etsv_add       (ETableSubsetVariable *etssv,
+		gint                  row)
+{
+	ETableModel *etm = E_TABLE_MODEL(etssv);
+	ETableSubset *etss = E_TABLE_SUBSET(etssv);
+	ETableSortedVariable *etsv = E_TABLE_SORTED_VARIABLE(etssv);
+	int i;
+	int col = etsv->sort_col;
+	GCompareFunc comp = etsv->compare;
+	gint ascending = etsv->ascending;
+
+	void *val = e_table_model_value_at(etss->source, col, row);
+	
+	/* FIXME: binary search anyone? */
+	for ( i = 0; i < etss->n_map; i++ ) {
+		int comp_val = (*comp)(val, e_table_model_value_at(etss->source, col, etss->map_table[i]));
+		if ( (ascending && comp_val < 0) || ((!ascending) && comp_val > 0) )
+			break;
+	}
+	if ( etss->n_map + 1 > etssv->n_vals_allocated ) {
+		etss->map_table = g_realloc(etss->map_table, (etssv->n_vals_allocated + INCREMENT_AMOUNT) * sizeof(int));
+		etssv->n_vals_allocated += INCREMENT_AMOUNT;
+	}
+	if ( i < etss->n_map )
+		memmove(etss->map_table + i + 1, etss->map_table + i, (etss->n_map - i) * sizeof(int));
+	etss->map_table[i] = row;
+	etss->n_map++;
+	if ( !etm->frozen )
+		e_table_model_changed(etm);
+}
+
+ETableModel *
+e_table_sorted_variable_new (ETableModel *source, int col, int ascending, GCompareFunc compare)
+{
+	ETableSortedVariable *etsv = gtk_type_new (E_TABLE_SORTED_VARIABLE_TYPE);
+	ETableSubsetVariable *etssv = E_TABLE_SUBSET_VARIABLE (etsv);
+
+	if (e_table_subset_variable_construct (etssv, source) == NULL){
+		gtk_object_destroy (GTK_OBJECT (etsv));
+		return NULL;
+	}
+	
+	etsv->sort_col = col;
+	etsv->ascending = ascending;
+	etsv->compare = compare;
+
+	etsv->table_model_changed_id = gtk_signal_connect (GTK_OBJECT (source), "model_changed",
+							   GTK_SIGNAL_FUNC (etsv_proxy_model_changed), etsv);
+	etsv->table_model_row_changed_id = gtk_signal_connect (GTK_OBJECT (source), "model_row_changed",
+							       GTK_SIGNAL_FUNC (etsv_proxy_model_row_changed), etsv);
+	etsv->table_model_cell_changed_id = gtk_signal_connect (GTK_OBJECT (source), "model_cell_changed",
+								GTK_SIGNAL_FUNC (etsv_proxy_model_cell_changed), etsv);
+	
+	return E_TABLE_MODEL(etsv);
+}
+
+static void
+etsv_proxy_model_changed (ETableModel *etm, ETableSortedVariable *etsv)
+{
+	if ( !E_TABLE_MODEL(etsv)->frozen ) {
+		/*		FIXME: do_resort(); */
+	}
+}
+
+static void
+etsv_proxy_model_row_changed (ETableModel *etm, int row, ETableSortedVariable *etsv)
+{
+	ETableSubsetVariable *etssv = E_TABLE_SUBSET_VARIABLE(etsv);
+	if ( !E_TABLE_MODEL(etsv)->frozen ) {
+		if(e_table_subset_variable_remove(etssv, row))
+			e_table_subset_variable_add(etssv, row);
+	}
+}
+
+static void
+etsv_proxy_model_cell_changed (ETableModel *etm, int col, int row, ETableSortedVariable *etsv)
+{
+	ETableSubsetVariable *etssv = E_TABLE_SUBSET_VARIABLE(etsv);
+	if ( !E_TABLE_MODEL(etsv)->frozen ) {
+		if ( col == etsv->sort_col ) {
+			if(e_table_subset_variable_remove(etssv, row))
+				e_table_subset_variable_add(etssv, row);
+		}
+	}
+}
+
diff --git a/widgets/e-table/e-table-sorted-variable.h b/widgets/e-table/e-table-sorted-variable.h
new file mode 100644
index 0000000000..cf188acd4a
--- /dev/null
+++ b/widgets/e-table/e-table-sorted-variable.h
@@ -0,0 +1,34 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+#ifndef _E_TABLE_SORTED_VARIABLE_H_
+#define _E_TABLE_SORTED_VARIABLE_H_
+
+#include <gtk/gtkobject.h>
+#include "e-table-model.h"
+#include "e-table-subset-variable.h"
+
+#define E_TABLE_SORTED_VARIABLE_TYPE        (e_table_sorted_variable_get_type ())
+#define E_TABLE_SORTED_VARIABLE(o)          (GTK_CHECK_CAST ((o), E_TABLE_SORTED_VARIABLE_TYPE, ETableSortedVariable))
+#define E_TABLE_SORTED_VARIABLE_CLASS(k)    (GTK_CHECK_CLASS_CAST((k), E_TABLE_SORTED_VARIABLE_TYPE, ETableSortedVariableClass))
+#define E_IS_TABLE_SORTED_VARIABLE(o)       (GTK_CHECK_TYPE ((o), E_TABLE_SORTED_VARIABLE_TYPE))
+#define E_IS_TABLE_SORTED_VARIABLE_CLASS(k) (GTK_CHECK_CLASS_TYPE ((k), E_TABLE_SORTED_VARIABLE_TYPE))
+
+typedef struct {
+	ETableSubsetVariable base;
+
+	short         sort_col;
+	int           ascending;
+	GCompareFunc  compare;
+
+	int              table_model_changed_id;
+	int              table_model_row_changed_id;
+	int              table_model_cell_changed_id;
+} ETableSortedVariable;
+
+typedef struct {
+	ETableSubsetVariableClass parent_class;
+} ETableSortedVariableClass;
+
+GtkType      e_table_sorted_variable_get_type (void);
+ETableModel *e_table_sorted_variable_new      (ETableModel *etm, int col, int ascending, GCompareFunc compare);
+
+#endif /* _E_TABLE_SORTED_VARIABLE_H_ */
diff --git a/widgets/e-table/e-table-sorted.c b/widgets/e-table/e-table-sorted.c
index 16644a45b1..c754f4cff7 100644
--- a/widgets/e-table/e-table-sorted.c
+++ b/widgets/e-table/e-table-sorted.c
@@ -13,7 +13,7 @@
 
 #define PARENT_TYPE E_TABLE_SUBSET_TYPE
 
-static ETableModelClass *ets_parent_class;
+static ETableSubsetClass *ets_parent_class;
 
 static void
 ets_class_init (GtkObjectClass *klass)
diff --git a/widgets/e-table/e-table-subset-variable.c b/widgets/e-table/e-table-subset-variable.c
index 76da03c44f..5a3e0f2ddf 100644
--- a/widgets/e-table/e-table-subset-variable.c
+++ b/widgets/e-table/e-table-subset-variable.c
@@ -14,16 +14,58 @@
 #include "e-util/e-util.h"
 #include "e-table-subset-variable.h"
 
+#define ETSSV_CLASS(e) ((ETableSubsetVariableClass *)((GtkObject *)e)->klass)
+
 #define PARENT_TYPE E_TABLE_SUBSET_TYPE
 
 #define INCREMENT_AMOUNT 10
 
-static ETableModelClass *etssv_parent_class;
+static ETableSubsetClass *etssv_parent_class;
+
+static void
+etssv_add       (ETableSubsetVariable *etssv,
+		 gint                  row)
+{
+	ETableModel *etm = E_TABLE_MODEL(etssv);
+	ETableSubset *etss = E_TABLE_SUBSET(etssv);
+	
+	if ( etss->n_map + 1 > etssv->n_vals_allocated ) {
+		etss->map_table = g_realloc(etss->map_table, (etssv->n_vals_allocated + INCREMENT_AMOUNT) * sizeof(int));
+		etssv->n_vals_allocated += INCREMENT_AMOUNT;
+	}
+	etss->map_table[etss->n_map++] = row;
+	if ( !etm->frozen )
+		e_table_model_changed(etm);
+}
+
+static gboolean
+etssv_remove    (ETableSubsetVariable *etssv,
+		 gint                  row)
+{
+	ETableModel *etm = E_TABLE_MODEL(etssv);
+	ETableSubset *etss = E_TABLE_SUBSET(etssv);
+	int i;
+	
+	for ( i = 0; i < etss->n_map; i++ ) {
+		if (etss->map_table[i] == row) {
+			memmove(etss->map_table + i, etss->map_table + i + 1, (etss->n_map - i - 1) * sizeof(int));
+			etss->n_map --;
+			if ( !etm->frozen )
+				e_table_model_changed(etm);
+			return TRUE;
+		}
+	}
+	return FALSE;
+}
 
 static void
-etssv_class_init (GtkObjectClass *klass)
+etssv_class_init (GtkObjectClass *object_class)
 {
+	ETableSubsetVariableClass *klass = E_TABLE_SUBSET_VARIABLE_CLASS(object_class);
 	etssv_parent_class = gtk_type_class (PARENT_TYPE);
+
+	klass->add = etssv_add;
+	klass->remove = etssv_remove;
 }
 
 E_MAKE_TYPE(e_table_subset_variable, "ETableSubsetVariable", ETableSubsetVariable, etssv_class_init, NULL, PARENT_TYPE);
@@ -56,34 +98,24 @@ void
 e_table_subset_variable_add       (ETableSubsetVariable *etssv,
 				   gint                  row)
 {
-	ETableModel *etm = E_TABLE_MODEL(etssv);
-	ETableSubset *etss = E_TABLE_SUBSET(etssv);
-	
-	if ( etss->n_map + 1 > etssv->n_vals_allocated )
-		etss->map_table = g_realloc(etss->map_table, (etssv->n_vals_allocated + INCREMENT_AMOUNT) * sizeof(int));
-	etss->map_table[etss->n_map++] = row;
-	if ( !etm->frozen )
-		e_table_model_changed(etm);
+	g_return_if_fail (etssv != NULL);
+	g_return_if_fail (E_IS_TABLE_SUBSET_VARIABLE(etssv));
+
+	if (ETSSV_CLASS(etssv)->add)
+		ETSSV_CLASS (etssv)->add (etssv, row);
 }
 
 gboolean
 e_table_subset_variable_remove    (ETableSubsetVariable *etssv,
 				   gint                  row)
 {
-	ETableModel *etm = E_TABLE_MODEL(etssv);
-	ETableSubset *etss = E_TABLE_SUBSET(etssv);
-	int i;
-	
-	for ( i = 0; i < etss->n_map; i++ ) {
-		if (etss->map_table[i] == row) {
-			memmove(etss->map_table + i, etss->map_table + i + 1, (etss->n_map - i - 1) * sizeof(int));
-			etss->n_map --;
-			if ( !etm->frozen )
-				e_table_model_changed(etm);
-			return TRUE;
-		}
-	}
-	return FALSE;
+	g_return_val_if_fail (etssv != NULL, FALSE);
+	g_return_val_if_fail (E_IS_TABLE_SUBSET_VARIABLE(etssv), FALSE);
+
+	if (ETSSV_CLASS(etssv)->remove)
+		return ETSSV_CLASS (etssv)->remove (etssv, row);
+	else
+		return FALSE;
 }
 
 void
diff --git a/widgets/e-table/e-table-subset-variable.h b/widgets/e-table/e-table-subset-variable.h
index 9755fb2477..8ac0af0382 100644
--- a/widgets/e-table/e-table-subset-variable.h
+++ b/widgets/e-table/e-table-subset-variable.h
@@ -19,6 +19,11 @@ typedef struct {
 
 typedef struct {
 	ETableSubsetClass parent_class;
+	
+	void     (*add)    (ETableSubsetVariable *ets,
+			    gint                  row);
+	gboolean (*remove) (ETableSubsetVariable *ets,
+			    gint                  row);
 } ETableSubsetVariableClass;
 
 GtkType      e_table_subset_variable_get_type  (void);
diff --git a/widgets/e-table/e-table-subset.c b/widgets/e-table/e-table-subset.c
index a09d221980..b4473b87ef 100644
--- a/widgets/e-table/e-table-subset.c
+++ b/widgets/e-table/e-table-subset.c
@@ -25,6 +25,17 @@ etss_destroy (GtkObject *object)
 	if (etss->source)
 		gtk_object_unref (GTK_OBJECT (etss->source));
 
+	gtk_signal_disconnect (GTK_OBJECT (etss->source),
+			       etss->table_model_changed_id);
+	gtk_signal_disconnect (GTK_OBJECT (etss->source),
+			       etss->table_model_row_changed_id);
+	gtk_signal_disconnect (GTK_OBJECT (etss->source),
+			       etss->table_model_cell_changed_id);
+
+	etss->table_model_changed_id = 0;
+	etss->table_model_row_changed_id = 0;
+	etss->table_model_cell_changed_id = 0;
+
 	if (etss->map_table)
 		free (etss->map_table);
 
@@ -71,6 +82,22 @@ etss_is_cell_editable (ETableModel *etm, int col, int row)
 	return e_table_model_is_cell_editable (etss->source, col, etss->map_table [row]);
 }
 
+static void *
+etss_duplicate_value (ETableModel *etm, int col, const void *value)
+{
+	ETableSubset *etss = (ETableSubset *)etm;
+
+	return e_table_model_duplicate_value (etss->source, col, value);
+}
+
+static void
+etss_free_value (ETableModel *etm, int col, void *value)
+{
+	ETableSubset *etss = (ETableSubset *)etm;
+
+	e_table_model_free_value (etss->source, col, value);
+}
+
 static void
 etss_thaw (ETableModel *etm)
 {
@@ -91,6 +118,8 @@ etss_class_init (GtkObjectClass *klass)
 	table_class->value_at         = etss_value_at;
 	table_class->set_value_at     = etss_set_value_at;
 	table_class->is_cell_editable = etss_is_cell_editable;
+	table_class->duplicate_value  = etss_duplicate_value;
+	table_class->free_value       = etss_free_value;
 	table_class->thaw             = etss_thaw;
 }
 
@@ -155,12 +184,12 @@ e_table_subset_construct (ETableSubset *etss, ETableModel *source, int nvals)
 	for (i = 0; i < nvals; i++)
 		etss->map_table [i] = i;
 
-	gtk_signal_connect (GTK_OBJECT (source), "model_changed",
-			    GTK_SIGNAL_FUNC (etss_proxy_model_changed), etss);
-	gtk_signal_connect (GTK_OBJECT (source), "model_row_changed",
-			    GTK_SIGNAL_FUNC (etss_proxy_model_row_changed), etss);
-	gtk_signal_connect (GTK_OBJECT (source), "model_cell_changed",
-			    GTK_SIGNAL_FUNC (etss_proxy_model_cell_changed), etss);
+	etss->table_model_changed_id = gtk_signal_connect (GTK_OBJECT (source), "model_changed",
+						     GTK_SIGNAL_FUNC (etss_proxy_model_changed), etss);
+	etss->table_model_row_changed_id = gtk_signal_connect (GTK_OBJECT (source), "model_row_changed",
+							 GTK_SIGNAL_FUNC (etss_proxy_model_row_changed), etss);
+	etss->table_model_cell_changed_id = gtk_signal_connect (GTK_OBJECT (source), "model_cell_changed",
+							  GTK_SIGNAL_FUNC (etss_proxy_model_cell_changed), etss);
 	
 	return E_TABLE_MODEL (etss);
 }
diff --git a/widgets/e-table/e-table-subset.h b/widgets/e-table/e-table-subset.h
index d8af1696f5..074120a410 100644
--- a/widgets/e-table/e-table-subset.h
+++ b/widgets/e-table/e-table-subset.h
@@ -17,6 +17,10 @@ typedef struct {
 	ETableModel  *source;
 	int  n_map;
 	int *map_table;
+
+	int              table_model_changed_id;
+	int              table_model_row_changed_id;
+	int              table_model_cell_changed_id;
 } ETableSubset;
 
 typedef struct {
diff --git a/widgets/e-table/e-table.c b/widgets/e-table/e-table.c
index 551ef52227..e508e24e02 100644
--- a/widgets/e-table/e-table.c
+++ b/widgets/e-table/e-table.c
@@ -34,6 +34,8 @@
 
 static GtkObjectClass *e_table_parent_class;
 
+static void e_table_fill_table (ETable *e_table, ETableModel *model);
+
 static void
 et_destroy (GtkObject *object)
 {
@@ -42,6 +44,20 @@ et_destroy (GtkObject *object)
 	gtk_object_unref (GTK_OBJECT (et->model));
 	gtk_object_unref (GTK_OBJECT (et->full_header));
 	gtk_object_unref (GTK_OBJECT (et->header));
+	gtk_widget_destroy (GTK_WIDGET (et->header_canvas));
+	gtk_widget_destroy (GTK_WIDGET (et->table_canvas));
+
+	gtk_signal_disconnect (GTK_OBJECT (et->model),
+			       et->table_model_change_id);
+	gtk_signal_disconnect (GTK_OBJECT (et->model),
+			       et->table_row_change_id);
+	gtk_signal_disconnect (GTK_OBJECT (et->model),
+			       et->table_cell_change_id);
+
+	if (et->rebuild_idle_id) {
+		g_source_remove(et->rebuild_idle_id);
+		et->rebuild_idle_id = 0;
+	}
 
 	(*e_table_parent_class->destroy)(object);
 }
@@ -54,6 +70,11 @@ e_table_init (GtkObject *object)
 	e_table->draw_grid = 1;
 	e_table->draw_focus = 1;
 	e_table->spreadsheet = 1;
+	
+	e_table->need_rebuild = 0;
+	e_table->need_row_changes = 0;
+	e_table->row_changes_list = NULL;
+	e_table->rebuild_idle_id = 0;
 }
 
 static ETableHeader *
@@ -528,6 +549,72 @@ table_canvas_size_allocate (GtkWidget *widget, GtkAllocation *alloc, ETable *e_t
 }
 
 static void
+change_row (gpointer key, gpointer value, gpointer data)
+{
+	ETable *et = E_TABLE(data);
+	gint row = GPOINTER_TO_INT(key);
+	if ( e_table_group_remove(et->group, row) ) {
+		e_table_group_add(et->group, row);
+	}
+}
+
+static gboolean
+changed_idle (gpointer data)
+{
+	ETable *et = E_TABLE(data);
+	if ( et->need_rebuild ) {
+		gtk_object_destroy( GTK_OBJECT(et->group ) );
+		et->group = e_table_group_new(GNOME_CANVAS_GROUP(et->table_canvas->root),
+					      et->full_header,
+					      et->header,
+					      et->model,
+					      e_xml_get_child_by_name(xmlDocGetRootElement(et->specification), "grouping")->childs);
+		e_table_fill_table(et, et->model);
+	} else if (et->need_row_changes) {
+		g_hash_table_foreach(et->row_changes_list, change_row, et);
+	}	
+	et->need_rebuild = 0;
+	et->need_row_changes = 0;
+	if (et->row_changes_list)
+		g_hash_table_destroy(et->row_changes_list);
+	et->row_changes_list = NULL;
+	et->rebuild_idle_id = 0;
+	return FALSE;
+}
+
+static void
+et_table_model_changed (ETableModel *model, ETable *et)
+{
+	et->need_rebuild = TRUE;
+	if ( !et->rebuild_idle_id ) {
+		et->rebuild_idle_id = g_idle_add(changed_idle, et);
+	}
+}
+
+static void
+et_table_row_changed (ETableModel *table_model, int row, ETable *et)
+{
+	if ( !et->need_rebuild ) {
+		if (!et->need_row_changes) {
+			et->need_row_changes = 1;
+			et->row_changes_list = g_hash_table_new (g_direct_hash, g_direct_equal);
+		}
+		if (!g_hash_table_lookup(et->row_changes_list, GINT_TO_POINTER(row))) {
+			g_hash_table_insert(et->row_changes_list, GINT_TO_POINTER(row), GINT_TO_POINTER(row + 1));
+		}
+	}
+	if ( !et->rebuild_idle_id ) {
+		et->rebuild_idle_id = g_idle_add(changed_idle, et);
+	}
+}
+
+static void
+et_table_cell_changed (ETableModel *table_model, int view_col, int row, ETable *et)
+{
+	et_table_row_changed(table_model, row, et);
+}
+
+static void
 e_table_setup_table (ETable *e_table, ETableHeader *full_header, ETableHeader *header, ETableModel *model, xmlNode *xml_grouping)
 {
 	e_table->table_canvas = GNOME_CANVAS(gnome_canvas_new ());
@@ -546,6 +633,17 @@ e_table_setup_table (ETable *e_table, ETableHeader *full_header, ETableHeader *h
 					   model,
 					   xml_grouping->childs);
 	
+	e_table->table_model_change_id = gtk_signal_connect (
+		GTK_OBJECT (model), "model_changed",
+		GTK_SIGNAL_FUNC (et_table_model_changed), e_table);
+
+	e_table->table_row_change_id = gtk_signal_connect (
+		GTK_OBJECT (model), "model_row_changed",
+		GTK_SIGNAL_FUNC (et_table_row_changed), e_table);
+
+	e_table->table_cell_change_id = gtk_signal_connect (
+		GTK_OBJECT (model), "model_cell_changed",
+		GTK_SIGNAL_FUNC (et_table_cell_changed), e_table);
 }
 
 static void
diff --git a/widgets/e-table/e-table.h b/widgets/e-table/e-table.h
index a372d8042c..841013c09a 100644
--- a/widgets/e-table/e-table.h
+++ b/widgets/e-table/e-table.h
@@ -26,6 +26,10 @@ typedef struct {
 
 	ETableGroup  *group;
 
+	int table_model_change_id;
+	int table_row_change_id;
+	int table_cell_change_id;
+
 	GnomeCanvas *header_canvas, *table_canvas;
 
 	GnomeCanvasItem *header_item, *root;
@@ -35,6 +39,12 @@ typedef struct {
 	guint draw_grid:1;
 	guint draw_focus:1;
 	guint spreadsheet:1;
+	
+	guint need_rebuild:1;
+	guint need_row_changes:1;
+	
+	GHashTable *row_changes_list;
+	gint rebuild_idle_id;
 } ETable;
 
 typedef struct {
diff --git a/widgets/e-table/test-check.c b/widgets/e-table/test-check.c
index a6a59788ad..7894898255 100644
--- a/widgets/e-table/test-check.c
+++ b/widgets/e-table/test-check.c
@@ -14,6 +14,7 @@
 #include "e-table-item.h"
 #include "e-util/e-cursors.h"
 #include "e-util/e-canvas-utils.h"
+#include "e-util/e-util.h"
 #include "e-cell-text.h"
 #include "e-cell-checkbox.h"
 
@@ -79,6 +80,24 @@ is_cell_editable (ETableModel *etc, int col, int row, void *data)
 	return TRUE;
 }
 
+static void *
+duplicate_value (ETableModel *etc, int col, const void *value, void *data)
+{
+  if (col == 0){
+    return (void *) value;
+  } else {
+    return g_strdup(value);
+  }
+}
+
+static void
+free_value (ETableModel *etc, int col, void *value, void *data)
+{
+  if (col != 0){
+    g_free(value);
+  }
+}
+
 static void
 thaw (ETableModel *etc, void *data)
 {
@@ -107,7 +126,8 @@ check_test (void)
 	
 	e_table_model = e_table_simple_new (
 		col_count, row_count, value_at,
-		set_value_at, is_cell_editable, thaw, NULL);
+		set_value_at, is_cell_editable, 
+		duplicate_value, free_value, thaw, NULL);
 
 	/*
 	 * Header
@@ -118,11 +138,11 @@ check_test (void)
 
 	cell_image_check = e_cell_checkbox_new ();
 	pixbuf = gdk_pixbuf_new_from_file("clip.png");
-	col_0 = e_table_col_new_with_pixbuf (0, pixbuf, 18, 18, cell_image_check, g_int_equal, TRUE);
+	col_0 = e_table_col_new_with_pixbuf (0, pixbuf, 18, 18, cell_image_check, g_int_compare, TRUE);
 	gdk_pixbuf_unref(pixbuf);
 	e_table_header_add_column (e_table_header, col_0, 0);
 	
-	col_1 = e_table_col_new (1, "Item Name", 180, 20, cell_left_just, g_str_equal, TRUE);
+	col_1 = e_table_col_new (1, "Item Name", 180, 20, cell_left_just, g_str_compare, TRUE);
 	e_table_header_add_column (e_table_header, col_1, 1);
 	e_table_col_set_arrow ( col_1, E_TABLE_COL_ARROW_DOWN );
 
diff --git a/widgets/e-table/test-cols.c b/widgets/e-table/test-cols.c
index adc9ed6c20..d65b9945b7 100644
--- a/widgets/e-table/test-cols.c
+++ b/widgets/e-table/test-cols.c
@@ -10,6 +10,7 @@
 #include <gnome.h>
 #include "e-util/e-canvas-utils.h"
 #include "e-util/e-cursors.h"
+#include "e-util/e-util.h"
 #include "e-table-simple.h"
 #include "e-table-header.h"
 #include "e-table-header-item.h"
@@ -79,6 +80,24 @@ is_cell_editable (ETableModel *etc, int col, int row, void *data)
 	return TRUE;
 }
 
+static void *
+duplicate_value (ETableModel *etc, int col, const void *value, void *data)
+{
+  if (col == 0){
+    return (void *)value;
+  } else {
+    return g_strdup(value);
+  }
+}
+
+static void
+free_value (ETableModel *etc, int col, void *value, void *data)
+{
+  if (col != 0){
+    g_free(value);
+  }
+}
+
 static void
 set_canvas_size (GnomeCanvas *canvas, GtkAllocation *alloc)
 {
@@ -106,7 +125,9 @@ multi_cols_test (void)
 	
 	e_table_model = e_table_simple_new (
 		col_count, row_count, value_at,
-		set_value_at, is_cell_editable, thaw, NULL);
+		set_value_at, is_cell_editable,
+		duplicate_value, free_value,
+		thaw, NULL);
 
 	/*
 	 * Header
@@ -131,10 +152,10 @@ multi_cols_test (void)
 		g_free (images);
 	} 
 					       
-	col_1 = e_table_col_new (1, "Item Name", 180, 20, cell_left_just, g_str_equal, TRUE);
+	col_1 = e_table_col_new (1, "Item Name", 180, 20, cell_left_just, g_str_compare, TRUE);
 	e_table_header_add_column (e_table_header, col_1, 0);
 
-	col_0 = e_table_col_new (0, "A", 48, 48, cell_image_toggle, g_int_equal, TRUE);
+	col_0 = e_table_col_new (0, "A", 48, 48, cell_image_toggle, g_int_compare, TRUE);
 	e_table_header_add_column (e_table_header, col_0, 1);
 
 	/*
diff --git a/widgets/e-table/test-table.c b/widgets/e-table/test-table.c
index 1bd50e1479..0fdf32fcbe 100644
--- a/widgets/e-table/test-table.c
+++ b/widgets/e-table/test-table.c
@@ -176,6 +176,18 @@ is_cell_editable (ETableModel *etc, int col, int row, void *data)
 	return TRUE;
 }
 
+static void *
+duplicate_value (ETableModel *etc, int col, const void *value, void *data)
+{
+	return g_strdup(value);
+}
+
+static void
+free_value (ETableModel *etc, int col, void *value, void *data)
+{
+	g_free(value);
+}
+
 static void
 thaw (ETableModel *etc, void *data)
 {
@@ -205,7 +217,8 @@ table_browser_test (void)
 	 */
 	e_table_model = e_table_simple_new (
 		col_count, row_count, value_at,
-		set_value_at, is_cell_editable, thaw, NULL);
+		set_value_at, is_cell_editable,
+		duplicate_value, free_value, thaw, NULL);
 
 	/*
 	 * Header
@@ -217,7 +230,7 @@ table_browser_test (void)
 		ETableCol *ecol = e_table_col_new (
 			i, column_labels [i],
 			80, 20, cell_left_just,
-			g_str_equal, TRUE);
+			g_str_compare, TRUE);
 
 		e_table_header_add_column (e_table_header, ecol, i);
 	}
@@ -263,7 +276,6 @@ static void
 do_e_table_demo (const char *spec)
 {
 	GtkWidget *e_table, *window, *frame;
-	ETableModel *e_table_model;
 	ECell *cell_left_just;
 	ETableHeader *full_header;
 	int i;
@@ -271,9 +283,14 @@ do_e_table_demo (const char *spec)
 	/*
 	 * Data model
 	 */
-	e_table_model = e_table_simple_new (
-		col_count, row_count, value_at,
-		set_value_at, is_cell_editable, thaw, NULL);
+	static ETableModel *e_table_model = NULL;
+
+	if ( e_table_model == NULL )
+		e_table_model = 
+			e_table_simple_new (col_count, row_count, value_at,
+					    set_value_at, is_cell_editable,
+					    duplicate_value, free_value, 
+					    thaw, NULL);
 
 	full_header = e_table_header_new ();
 	cell_left_just = e_cell_text_new (e_table_model, NULL, GTK_JUSTIFY_LEFT, TRUE);
@@ -282,7 +299,7 @@ do_e_table_demo (const char *spec)
 		ETableCol *ecol = e_table_col_new (
 			i, column_labels [i],
 			80, 20, cell_left_just,
-			g_str_equal, TRUE);
+			g_str_compare, TRUE);
 
 		e_table_header_add_column (full_header, ecol, i);
 	}
@@ -306,9 +323,9 @@ e_table_test (void)
 	load_data ();
 
 	if (1){/*getenv ("DO")){*/
-	  do_e_table_demo ("<ETableSpecification> <columns-shown> <column> 0 </column> <column> 1 </column> <column> 2 </column> <column> 3 </column> <column> 4 </column> </columns-shown> <grouping> <leaf/> </grouping> </ETableSpecification>");
-	  do_e_table_demo ("<ETableSpecification> <columns-shown> <column> 0 </column> <column> 0 </column> <column> 0 </column> <column> 0 </column> <column> 0 </column> <column> 1 </column> <column> 2 </column> <column> 3 </column> <column> 4 </column> </columns-shown> <grouping> <group column=\"3\"> <group column=\"4\"> <leaf/> </group> </group> </grouping> </ETableSpecification>");
+	  do_e_table_demo ("<ETableSpecification> <columns-shown> <column> 0 </column> <column> 1 </column> <column> 2 </column> <column> 3 </column> <column> 4 </column> </columns-shown> <grouping> <leaf column=\"3\" ascending=\"1\"/> </grouping> </ETableSpecification>");
+	  do_e_table_demo ("<ETableSpecification> <columns-shown> <column> 0 </column> <column> 0 </column> <column> 1 </column> <column> 2 </column> <column> 3 </column> <column> 4 </column> </columns-shown> <grouping> <group column=\"3\" ascending=\"1\"> <group column=\"4\" ascending=\"0\"> <leaf column=\"2\" ascending=\"1\"/> </group> </group> </grouping> </ETableSpecification>");
 	}
-	  do_e_table_demo ("<ETableSpecification> <columns-shown> <column> 0 </column> <column> 1 </column> <column> 2 </column> <column> 3 </column> <column> 4 </column> </columns-shown> <grouping> <group column=\"4\"> <leaf/> </group> </grouping> </ETableSpecification>");
-	  do_e_table_demo ("<ETableSpecification> <columns-shown> <column> 0 </column> <column> 1 </column> <column> 2 </column> <column> 3 </column> <column> 4 </column> </columns-shown> <grouping> <group column=\"3\"> <leaf/> </group> </grouping> </ETableSpecification>");
+	  do_e_table_demo ("<ETableSpecification> <columns-shown> <column> 0 </column> <column> 1 </column> <column> 2 </column> <column> 3 </column> <column> 4 </column> </columns-shown> <grouping> <group column=\"4\" ascending=\"1\"> <leaf column=\"2\" ascending=\"1\"/> </group> </grouping> </ETableSpecification>");
+	  do_e_table_demo ("<ETableSpecification> <columns-shown> <column> 0 </column> <column> 1 </column> <column> 2 </column> <column> 3 </column> <column> 4 </column> </columns-shown> <grouping> <group column=\"3\" ascending=\"1\"> <leaf column=\"2\" ascending=\"1\"/> </group> </grouping> </ETableSpecification>");
 }