* Changes in the autotools stuff affecting a lot of platform dependent
[modest] / src / widgets / modest-header-view.c
index dbd51c0..78ec1b3 100644 (file)
 #include <tny-simple-list.h>
 #include <tny-folder-monitor.h>
 #include <tny-folder-change.h>
+#include <tny-error.h>
 #include <string.h>
 
 #include <modest-header-view.h>
 #include <modest-header-view-priv.h>
 #include <modest-dnd.h>
 #include <modest-tny-folder.h>
-
+#include <modest-debug.h>
 #include <modest-main-window.h>
-
+#include <modest-ui-actions.h>
 #include <modest-marshal.h>
 #include <modest-text-utils.h>
 #include <modest-icon-names.h>
@@ -71,10 +72,24 @@ static gboolean     filter_row             (GtkTreeModel *model,
                                            GtkTreeIter *iter,
                                            gpointer data);
 
+static void         on_account_removed     (TnyAccountStore *self, 
+                                           TnyAccount *account,
+                                           gpointer user_data);
+
 static void          on_selection_changed   (GtkTreeSelection *sel,
                                             gpointer user_data);
 
-static void          setup_drag_and_drop    (GtkTreeView *self);
+static gboolean      on_button_press_event  (GtkWidget * self, GdkEventButton * event,
+                                             gpointer userdata);
+
+static gboolean      on_button_release_event(GtkWidget * self, GdkEventButton * event,
+                                             gpointer userdata);
+
+static void          setup_drag_and_drop    (GtkWidget *self);
+
+static void          enable_drag_and_drop   (GtkWidget *self);
+
+static void          disable_drag_and_drop  (GtkWidget *self);
 
 static GtkTreePath * get_selected_row       (GtkTreeView *self, GtkTreeModel **model);
 
@@ -82,6 +97,10 @@ static gboolean      on_focus_in            (GtkWidget     *sef,
                                             GdkEventFocus *event,
                                             gpointer       user_data);
 
+static gboolean      on_focus_out            (GtkWidget     *self,
+                                             GdkEventFocus *event,
+                                             gpointer       user_data);
+
 static void          folder_monitor_update  (TnyFolderObserver *self, 
                                             TnyFolderChange *change);
 
@@ -91,6 +110,19 @@ static void          _clipboard_set_selected_data (ModestHeaderView *header_view
 
 static void          _clear_hidding_filter (ModestHeaderView *header_view);
 
+static void          modest_header_view_notify_observers(ModestHeaderView *header_view,
+                                                        GtkTreeModel *model,
+                                                        const gchar *tny_folder_id);
+
+static gboolean      modest_header_view_on_expose_event (GtkTreeView *header_view,
+                                                        GdkEventExpose *event,
+                                                        gpointer user_data);
+
+typedef enum {
+       HEADER_VIEW_NON_EMPTY,
+       HEADER_VIEW_EMPTY,
+       HEADER_VIEW_INIT
+} HeaderViewStatus;
 
 typedef struct _ModestHeaderViewPrivate ModestHeaderViewPrivate;
 struct _ModestHeaderViewPrivate {
@@ -100,17 +132,29 @@ struct _ModestHeaderViewPrivate {
        TnyFolderMonitor     *monitor;
        GMutex               *observers_lock;
 
+       /*header-view-observer observer*/
+       GMutex *observer_list_lock;
+       GSList *observer_list;
+
        /* not unref this object, its a singlenton */
        ModestEmailClipboard *clipboard;
 
        /* Filter tree model */
-       gchar               **hidding_ids;
-       guint                 n_selected;
+       gchar **hidding_ids;
+       guint   n_selected;
+       GtkTreeRowReference *autoselect_reference;
+
+       gint    sort_colid[2][TNY_FOLDER_TYPE_NUM];
+       gint    sort_type[2][TNY_FOLDER_TYPE_NUM];
 
-       gint                  sort_colid[2][TNY_FOLDER_TYPE_NUM];
-       gint                  sort_type[2][TNY_FOLDER_TYPE_NUM];
+       gulong  selection_changed_handler;
+       gulong  acc_removed_handler;
 
-       gulong                selection_changed_handler;
+       GList *drag_begin_cached_selected_rows;
+
+       HeaderViewStatus status;
+       guint status_timeout;
+       gboolean notify_status; /* whether or not the filter_row should notify about changes in the filtering */
 };
 
 typedef struct _HeadersCountChangedHelper HeadersCountChangedHelper;
@@ -133,6 +177,7 @@ enum {
        HEADER_ACTIVATED_SIGNAL,
        ITEM_NOT_FOUND_SIGNAL,
        MSG_COUNT_CHANGED_SIGNAL,
+       UPDATING_MSG_LIST_SIGNAL,
        LAST_SIGNAL
 };
 
@@ -226,12 +271,21 @@ modest_header_view_class_init (ModestHeaderViewClass *klass)
                              NULL, NULL,
                              modest_marshal_VOID__POINTER_POINTER,
                              G_TYPE_NONE, 2, G_TYPE_POINTER, G_TYPE_POINTER);
+
+       signals[UPDATING_MSG_LIST_SIGNAL] =
+               g_signal_new ("updating-msg-list",
+                             G_TYPE_FROM_CLASS (gobject_class),
+                             G_SIGNAL_RUN_FIRST,
+                             G_STRUCT_OFFSET (ModestHeaderViewClass, updating_msg_list),
+                             NULL, NULL,
+                             g_cclosure_marshal_VOID__BOOLEAN,
+                             G_TYPE_NONE, 1, G_TYPE_BOOLEAN);
 }
 
 static void
 tny_folder_observer_init (TnyFolderObserverIface *klass)
 {
-       klass->update_func = folder_monitor_update;
+       klass->update = folder_monitor_update;
 }
 
 static GtkTreeViewColumn*
@@ -283,7 +337,7 @@ modest_header_view_set_columns (ModestHeaderView *self, const GList *columns, Tn
        GtkTreeModel *tree_filter, *sortable;
        GtkTreeViewColumn *column=NULL;
        GtkTreeSelection *selection = NULL;
-       GtkCellRenderer *renderer_msgtype,*renderer_header,
+       GtkCellRenderer *renderer_header,
                *renderer_attach, *renderer_compact_date_or_status;
        GtkCellRenderer *renderer_compact_header, *renderer_recpt_box, 
                *renderer_subject, *renderer_subject_box, *renderer_recpt,
@@ -291,11 +345,13 @@ modest_header_view_set_columns (ModestHeaderView *self, const GList *columns, Tn
        ModestHeaderViewPrivate *priv;
        GtkTreeViewColumn *compact_column = NULL;
        const GList *cursor;
+
+       g_return_val_if_fail (self && MODEST_IS_HEADER_VIEW(self), FALSE);
+       g_return_val_if_fail (type != TNY_FOLDER_TYPE_INVALID, FALSE);
        
        priv = MODEST_HEADER_VIEW_GET_PRIVATE(self); 
 
-       /* FIXME: check whether these renderers need to be freed */
-       renderer_msgtype = gtk_cell_renderer_pixbuf_new ();
+       /* TODO: check whether these renderers need to be freed */
        renderer_attach  = gtk_cell_renderer_pixbuf_new ();
        renderer_priority  = gtk_cell_renderer_pixbuf_new ();
        renderer_header  = gtk_cell_renderer_text_new ();
@@ -323,8 +379,10 @@ modest_header_view_set_columns (ModestHeaderView *self, const GList *columns, Tn
        g_object_set_data (G_OBJECT (renderer_recpt_box), "date-renderer", renderer_compact_date_or_status);
 
        g_object_set (G_OBJECT (renderer_subject_box), "yalign", 1.0, NULL);
+#ifndef MODEST_TOOLKIT_GTK
        gtk_cell_renderer_set_fixed_size (renderer_subject_box, -1, 32);
        gtk_cell_renderer_set_fixed_size (renderer_recpt_box, -1, 32);
+#endif
        g_object_set (G_OBJECT (renderer_recpt_box), "yalign", 0.0, NULL);
        g_object_set(G_OBJECT(renderer_header),
                     "ellipsize", PANGO_ELLIPSIZE_END,
@@ -332,20 +390,29 @@ modest_header_view_set_columns (ModestHeaderView *self, const GList *columns, Tn
        g_object_set (G_OBJECT (renderer_subject),
                      "ellipsize", PANGO_ELLIPSIZE_END, "yalign", 1.0,
                      NULL);
+       gtk_cell_renderer_text_set_fixed_height_from_font (GTK_CELL_RENDERER_TEXT (renderer_subject), 1);
        g_object_set (G_OBJECT (renderer_recpt),
                      "ellipsize", PANGO_ELLIPSIZE_END, "yalign", 0.0,
                      NULL);
+       gtk_cell_renderer_text_set_fixed_height_from_font (GTK_CELL_RENDERER_TEXT (renderer_recpt), 1);
        g_object_set(G_OBJECT(renderer_compact_date_or_status),
                     "xalign", 1.0, "yalign", 0.0,
                     NULL);
+       gtk_cell_renderer_text_set_fixed_height_from_font (GTK_CELL_RENDERER_TEXT (renderer_compact_date_or_status), 1);
        g_object_set (G_OBJECT (renderer_priority),
                      "yalign", 1.0, NULL);
        g_object_set (G_OBJECT (renderer_attach),
                      "yalign", 0.0, NULL);
 
+#ifndef MODEST_TOOLKIT_GTK
        gtk_cell_renderer_set_fixed_size (renderer_attach, 32, 26);
        gtk_cell_renderer_set_fixed_size (renderer_priority, 32, 26);
        gtk_cell_renderer_set_fixed_size (renderer_compact_header, -1, 64);
+#else
+       gtk_cell_renderer_set_fixed_size (renderer_attach, 16, 16);
+       gtk_cell_renderer_set_fixed_size (renderer_priority, 16, 16);
+       /* gtk_cell_renderer_set_fixed_size (renderer_compact_header, -1, 64); */
+#endif
        
        remove_all_columns (self);
 
@@ -366,15 +433,6 @@ modest_header_view_set_columns (ModestHeaderView *self, const GList *columns, Tn
                
                switch (col) {
                        
-               case MODEST_HEADER_VIEW_COLUMN_MSGTYPE:
-                       column = get_new_column (_("M"), renderer_msgtype, FALSE,
-                                                TNY_GTK_HEADER_LIST_MODEL_FLAGS_COLUMN,
-                                                FALSE,
-                                                (GtkTreeCellDataFunc)_modest_header_view_msgtype_cell_data,
-                                                NULL);
-                       gtk_tree_view_column_set_fixed_width (column, 45);
-                       break;
-
                case MODEST_HEADER_VIEW_COLUMN_ATTACH:
                        column = get_new_column (_("A"), renderer_attach, FALSE,
                                                 TNY_GTK_HEADER_LIST_MODEL_FLAGS_COLUMN,
@@ -486,7 +544,6 @@ modest_header_view_set_columns (ModestHeaderView *self, const GList *columns, Tn
                                                 compact_column, NULL);
        }
 
-
        return TRUE;
 }
 
@@ -502,11 +559,20 @@ modest_header_view_init (ModestHeaderView *obj)
 
        priv->monitor        = NULL;
        priv->observers_lock = g_mutex_new ();
+       priv->autoselect_reference = NULL;
+
+       priv->status  = HEADER_VIEW_INIT;
+       priv->status_timeout = 0;
+       priv->notify_status = TRUE;
+
+       priv->observer_list_lock = g_mutex_new();
+       priv->observer_list = NULL;
 
        priv->clipboard = modest_runtime_get_email_clipboard ();
        priv->hidding_ids = NULL;
        priv->n_selected = 0;
        priv->selection_changed_handler = 0;
+       priv->acc_removed_handler = 0;
 
        /* Sort parameters */
        for (j=0; j < 2; j++) {
@@ -516,7 +582,7 @@ modest_header_view_init (ModestHeaderView *obj)
                }                       
        }
 
-       setup_drag_and_drop (GTK_TREE_VIEW (obj));
+       setup_drag_and_drop (GTK_WIDGET(obj));
 }
 
 static void
@@ -524,16 +590,26 @@ modest_header_view_dispose (GObject *obj)
 {
        ModestHeaderView        *self;
        ModestHeaderViewPrivate *priv;
+       GtkTreeSelection *sel;
        
        self = MODEST_HEADER_VIEW(obj);
        priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 
+       /* Free in the dispose to avoid unref cycles */
        if (priv->folder) {
                tny_folder_remove_observer (priv->folder, TNY_FOLDER_OBSERVER (obj));
                g_object_unref (G_OBJECT (priv->folder));
                priv->folder = NULL;
        }
 
+       /* We need to do this here in the dispose because the
+          selection won't exist when finalizing */
+       sel = gtk_tree_view_get_selection (GTK_TREE_VIEW(self));
+       if (sel && g_signal_handler_is_connected (sel, priv->selection_changed_handler)) {
+               g_signal_handler_disconnect (sel, priv->selection_changed_handler);
+               priv->selection_changed_handler = 0;
+       }
+
        G_OBJECT_CLASS(parent_class)->dispose (obj);
 }
 
@@ -546,11 +622,17 @@ modest_header_view_finalize (GObject *obj)
        self = MODEST_HEADER_VIEW(obj);
        priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 
-       if (priv->selection_changed_handler) {
-               g_signal_handler_disconnect (self, priv->selection_changed_handler);
-               priv->selection_changed_handler = 0;
+       if (g_signal_handler_is_connected (modest_runtime_get_account_store (), 
+                                          priv->acc_removed_handler)) {
+               g_signal_handler_disconnect (modest_runtime_get_account_store (), 
+                                            priv->acc_removed_handler);
        }
 
+       /* There is no need to lock because there should not be any
+        * reference to self now. */
+       g_mutex_free(priv->observer_list_lock);
+       g_slist_free(priv->observer_list);
+
        g_mutex_lock (priv->observers_lock);
        if (priv->monitor) {
                tny_folder_monitor_stop (priv->monitor);
@@ -562,6 +644,11 @@ modest_header_view_finalize (GObject *obj)
        /* Clear hidding array created by cut operation */
        _clear_hidding_filter (MODEST_HEADER_VIEW (obj));
 
+       if (priv->autoselect_reference != NULL) {
+               gtk_tree_row_reference_free (priv->autoselect_reference);
+               priv->autoselect_reference = NULL;
+       }
+
        G_OBJECT_CLASS(parent_class)->finalize (obj);
 }
 
@@ -582,7 +669,6 @@ modest_header_view_new (TnyFolder *folder, ModestHeaderViewStyle style)
        priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
        
        modest_header_view_set_style   (self, style);
-/*     modest_header_view_set_folder (self, NULL, NULL, NULL); */
 
        gtk_tree_view_columns_autosize (GTK_TREE_VIEW(obj));
        gtk_tree_view_set_fixed_height_mode (GTK_TREE_VIEW(obj),TRUE);
@@ -590,8 +676,8 @@ modest_header_view_new (TnyFolder *folder, ModestHeaderViewStyle style)
        
        gtk_tree_view_set_rules_hint (GTK_TREE_VIEW(obj),
                                      TRUE); /* alternating row colors */
-       sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(self));
-       
+
+       sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(self)); 
        priv->selection_changed_handler =
                g_signal_connect_after (sel, "changed",
                                        G_CALLBACK(on_selection_changed), self);
@@ -601,7 +687,23 @@ modest_header_view_new (TnyFolder *folder, ModestHeaderViewStyle style)
 
        g_signal_connect (self, "focus-in-event",
                          G_CALLBACK(on_focus_in), NULL);
+       g_signal_connect (self, "focus-out-event",
+                         G_CALLBACK(on_focus_out), NULL);
+
+       g_signal_connect (self, "button-press-event",
+                         G_CALLBACK(on_button_press_event), NULL);
+       g_signal_connect (self, "button-release-event",
+                         G_CALLBACK(on_button_release_event), NULL);
        
+       priv->acc_removed_handler = g_signal_connect (modest_runtime_get_account_store (),
+                                                     "account_removed",
+                                                     G_CALLBACK (on_account_removed),
+                                                     self);
+
+       g_signal_connect (self, "expose-event",
+                       G_CALLBACK(modest_header_view_on_expose_event),
+                       NULL);
+
        return GTK_WIDGET(self);
 }
 
@@ -612,7 +714,7 @@ modest_header_view_count_selected_headers (ModestHeaderView *self)
        GtkTreeSelection *sel;
        guint selected_rows;
 
-       g_return_val_if_fail (self, 0);
+       g_return_val_if_fail (self && MODEST_IS_HEADER_VIEW(self), 0);
        
        /* Get selection object and check selected rows count */
        sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(self));
@@ -626,8 +728,8 @@ modest_header_view_has_selected_headers (ModestHeaderView *self)
 {
        GtkTreeSelection *sel;
        gboolean empty;
-
-       g_return_val_if_fail (self, FALSE);
+       
+       g_return_val_if_fail (self && MODEST_IS_HEADER_VIEW(self), FALSE);
        
        /* Get selection object and check selected rows count */
        sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(self));
@@ -648,7 +750,7 @@ modest_header_view_get_selected_headers (ModestHeaderView *self)
        GtkTreeModel *tree_model = NULL;
        GtkTreeIter iter;
 
-       g_return_val_if_fail (self, NULL);
+       g_return_val_if_fail (self && MODEST_IS_HEADER_VIEW(self), NULL);
        
        priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 
@@ -685,7 +787,7 @@ modest_header_view_get_selected_headers (ModestHeaderView *self)
 static void
 scroll_to_selected (ModestHeaderView *self, GtkTreeIter *iter, gboolean up)
 {
-#ifdef MODEST_PLATFORM_GNOME 
+#ifdef MODEST_TOOLKIT_GTK 
 
        GtkTreePath *selected_path;
        GtkTreePath *start, *end;
@@ -710,7 +812,7 @@ scroll_to_selected (ModestHeaderView *self, GtkTreeIter *iter, gboolean up)
        gtk_tree_path_free (start);
        gtk_tree_path_free (end);
 
-#endif /* MODEST_PLATFORM_GNOME */
+#endif /* MODEST_TOOLKIT_GTK */
 }
 
 
@@ -722,6 +824,8 @@ modest_header_view_select_next (ModestHeaderView *self)
        GtkTreeModel *model;
        GtkTreePath *path;
 
+       g_return_if_fail (self && MODEST_IS_HEADER_VIEW(self));
+
        sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (self));
        path = get_selected_row (GTK_TREE_VIEW(self), &model);
        if ((path != NULL) && (gtk_tree_model_get_iter(model, &iter, path))) {
@@ -746,6 +850,8 @@ modest_header_view_select_prev (ModestHeaderView *self)
        GtkTreeModel *model;
        GtkTreePath *path;
 
+       g_return_if_fail (self && MODEST_IS_HEADER_VIEW(self));
+
        sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (self));
        path = get_selected_row (GTK_TREE_VIEW(self), &model);
        if ((path != NULL) && (gtk_tree_model_get_iter(model, &iter, path))) {
@@ -767,19 +873,13 @@ modest_header_view_select_prev (ModestHeaderView *self)
 
 GList*
 modest_header_view_get_columns (ModestHeaderView *self)
-{
-       g_return_val_if_fail (self, FALSE);
+{      
+       g_return_val_if_fail (self && MODEST_IS_HEADER_VIEW(self), NULL);
+       
        return gtk_tree_view_get_columns (GTK_TREE_VIEW(self)); 
 }
 
 
-gboolean
-modest_header_view_is_empty (ModestHeaderView *self)
-{
-       g_return_val_if_fail (self, FALSE);
-       return FALSE; /* FIXME */
-}
-
 
 gboolean
 modest_header_view_set_style (ModestHeaderView *self,
@@ -789,10 +889,10 @@ modest_header_view_set_style (ModestHeaderView *self,
        gboolean show_col_headers = FALSE;
        ModestHeaderViewStyle old_style;
        
-       g_return_val_if_fail (self, FALSE);
+       g_return_val_if_fail (self && MODEST_IS_HEADER_VIEW(self), FALSE);
        g_return_val_if_fail (style >= 0 && MODEST_HEADER_VIEW_STYLE_NUM,
                              FALSE);
-
+       
        priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
        if (priv->style == style)
                return TRUE; /* nothing to do */
@@ -819,35 +919,99 @@ modest_header_view_set_style (ModestHeaderView *self,
 ModestHeaderViewStyle
 modest_header_view_get_style (ModestHeaderView *self)
 {
-       g_return_val_if_fail (self, FALSE);
+       g_return_val_if_fail (self && MODEST_IS_HEADER_VIEW(self), FALSE);
+
        return MODEST_HEADER_VIEW_GET_PRIVATE(self)->style;
 }
 
-/* 
- * This function sets a sortable model in the header view. It's just
- * used for developing purposes, because it only does a
- * gtk_tree_view_set_model
+/* This is used to automatically select the first header if the user
+ * has not selected any header yet.
  */
-static void
-modest_header_view_set_model (GtkTreeView *header_view, GtkTreeModel *model)
+static gboolean 
+modest_header_view_on_expose_event(GtkTreeView *header_view,
+                                  GdkEventExpose *event,
+                                  gpointer user_data)
 {
-/*     GtkTreeModel *old_model_sort = gtk_tree_view_get_model (GTK_TREE_VIEW (header_view)); */
-/*     if (old_model_sort && GTK_IS_TREE_MODEL_SORT (old_model_sort)) { */
-/*             GtkTreeModel *old_model; */
-/*             ModestHeaderViewPrivate *priv; */
-/*             priv = MODEST_HEADER_VIEW_GET_PRIVATE (header_view); */
-/*             old_model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (old_model_sort)); */
-
-/*             /\* Set new model *\/ */
-/*             gtk_tree_view_set_model (header_view, model); */
-/*     } else */
-       gtk_tree_view_set_model (header_view, model);
+       GtkTreeSelection *sel;
+       GtkTreeModel *model;
+       GtkTreeIter tree_iter;
+       ModestHeaderViewPrivate *priv;
+
+       priv = MODEST_HEADER_VIEW_GET_PRIVATE(header_view);
+       model = gtk_tree_view_get_model(header_view);
+
+       if (!model)
+               return FALSE;
+
+       sel = gtk_tree_view_get_selection(header_view);
+       if(!gtk_tree_selection_count_selected_rows(sel)) {
+               if (gtk_tree_model_get_iter_first(model, &tree_iter)) {
+                       GtkTreePath *tree_iter_path;
+                       /* Prevent the widget from getting the focus
+                          when selecting the first item */
+                       tree_iter_path = gtk_tree_model_get_path (model, &tree_iter);
+                       g_object_set(header_view, "can-focus", FALSE, NULL);
+                       gtk_tree_selection_select_iter(sel, &tree_iter);
+                       gtk_tree_view_set_cursor (header_view, tree_iter_path, NULL, FALSE);
+                       g_object_set(header_view, "can-focus", TRUE, NULL);
+                       if (priv->autoselect_reference) {
+                               gtk_tree_row_reference_free (priv->autoselect_reference);
+                       }
+                       priv->autoselect_reference = gtk_tree_row_reference_new (model, tree_iter_path);
+                       gtk_tree_path_free (tree_iter_path);
+               }
+       } else {
+               if (priv->autoselect_reference != NULL) {
+                       gboolean moved_selection = FALSE;
+                       GtkTreePath * last_path;
+                       if (gtk_tree_selection_count_selected_rows (sel) != 1) {
+                               moved_selection = TRUE;
+                       } else {
+                               GList *rows;
+
+                               rows = gtk_tree_selection_get_selected_rows (sel, NULL);
+                               last_path = gtk_tree_row_reference_get_path (priv->autoselect_reference);
+                               if (gtk_tree_path_compare (last_path, (GtkTreePath *) rows->data) != 0)
+                                       moved_selection = TRUE;
+                               g_list_foreach (rows, (GFunc) gtk_tree_path_free, NULL);
+                               g_list_free (rows);
+                               gtk_tree_path_free (last_path);
+                       }
+                       if (moved_selection) {
+                               gtk_tree_row_reference_free (priv->autoselect_reference);
+                               priv->autoselect_reference = NULL;
+                       } else {
+
+                               if (gtk_tree_model_get_iter_first (model, &tree_iter)) {
+                                       GtkTreePath *current_path;
+                                       current_path = gtk_tree_model_get_path (model, &tree_iter);
+                                       last_path = gtk_tree_row_reference_get_path (priv->autoselect_reference);
+                                       if (gtk_tree_path_compare (current_path, last_path) != 0) {
+                                               g_object_set(header_view, "can-focus", FALSE, NULL);
+                                               gtk_tree_selection_unselect_all (sel);
+                                               gtk_tree_selection_select_iter(sel, &tree_iter);
+                                               gtk_tree_view_set_cursor (header_view, current_path, NULL, FALSE);
+                                               g_object_set(header_view, "can-focus", TRUE, NULL);
+                                               gtk_tree_row_reference_free (priv->autoselect_reference);
+                                               priv->autoselect_reference = gtk_tree_row_reference_new (model, current_path);
+                                       }
+                                       gtk_tree_path_free (current_path);
+                                       gtk_tree_path_free (last_path);
+                               }
+                       }
+               }
+       }
+
+       return FALSE;
 }
 
 TnyFolder*
 modest_header_view_get_folder (ModestHeaderView *self)
 {
        ModestHeaderViewPrivate *priv;
+
+       g_return_val_if_fail (self && MODEST_IS_HEADER_VIEW(self), NULL);
+
        priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 
        if (priv->folder)
@@ -857,22 +1021,22 @@ modest_header_view_get_folder (ModestHeaderView *self)
 }
 
 static void
-modest_header_view_set_folder_intern (ModestHeaderView *self, TnyFolder *folder)
+set_folder_intern_get_headers_async_cb (TnyFolder *folder, 
+                                       gboolean cancelled, 
+                                       TnyList *headers, 
+                                       GError *err, 
+                                       gpointer user_data)
 {
-       TnyFolderType type;
-       TnyList *headers;
+       ModestHeaderView *self;
        ModestHeaderViewPrivate *priv;
-       GList *cols, *cursor;
-       GtkTreeModel *filter_model, *sortable; 
-       guint sort_colid;
-       GtkSortType sort_type;
 
-       priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
+       g_return_if_fail (MODEST_IS_HEADER_VIEW (user_data));
 
-       headers = TNY_LIST (tny_gtk_header_list_model_new ());
+       self = MODEST_HEADER_VIEW (user_data);
+       priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 
-       tny_gtk_header_list_model_set_folder (TNY_GTK_HEADER_LIST_MODEL(headers),
-                                             folder, FALSE);
+       if (cancelled || err)
+               return;
 
        /* Add IDLE observer (monitor) and another folder observer for
           new messages (self) */
@@ -885,10 +1049,46 @@ modest_header_view_set_folder_intern (ModestHeaderView *self, TnyFolder *folder)
        tny_folder_monitor_add_list (priv->monitor, TNY_LIST (headers));
        tny_folder_monitor_start (priv->monitor);
        g_mutex_unlock (priv->observers_lock);
+}
+
+static void
+modest_header_view_set_folder_intern (ModestHeaderView *self, TnyFolder *folder)
+{
+       TnyFolderType type;
+       TnyList *headers;
+       ModestHeaderViewPrivate *priv;
+       GList *cols, *cursor;
+       GtkTreeModel *filter_model, *sortable; 
+       guint sort_colid;
+       GtkSortType sort_type;
+
+       priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
+
+       headers = TNY_LIST (tny_gtk_header_list_model_new ());
+
+       /* Start the monitor in the callback of the
+          tny_gtk_header_list_model_set_folder call. It's crucial to
+          do it there and not just after the call because we want the
+          monitor to observe only the headers returned by the
+          tny_folder_get_headers_async call that it's inside the
+          tny_gtk_header_list_model_set_folder call. This way the
+          monitor infrastructure could successfully cope with
+          duplicates. For example if a tny_folder_add_msg_async is
+          happening while tny_gtk_header_list_model_set_folder is
+          invoked, then the first call could add a header that will
+          be added again by tny_gtk_header_list_model_set_folder, so
+          we'd end up with duplicate headers. sergio */
+       tny_gtk_header_list_model_set_folder (TNY_GTK_HEADER_LIST_MODEL(headers),
+                                             folder, FALSE, 
+                                             set_folder_intern_get_headers_async_cb, 
+                                             NULL, self);
 
        sortable = gtk_tree_model_sort_new_with_model (GTK_TREE_MODEL(headers));
        g_object_unref (G_OBJECT (headers));
 
+       /* Init filter_row function to examine empty status */
+       priv->status  = HEADER_VIEW_INIT;
+
        /* Create a tree model filter to hide and show rows for cut operations  */
        filter_model = gtk_tree_model_filter_new (sortable, NULL);
        gtk_tree_model_filter_set_visible_func (GTK_TREE_MODEL_FILTER (filter_model),
@@ -903,6 +1103,9 @@ modest_header_view_set_folder_intern (ModestHeaderView *self, TnyFolder *folder)
        /* Restore sort column id */
        if (cols) {
                type  = modest_tny_folder_guess_folder_type (folder);
+               if (type == TNY_FOLDER_TYPE_INVALID)
+                       g_warning ("%s: BUG: TNY_FOLDER_TYPE_INVALID", __FUNCTION__);
+               
                sort_colid = modest_header_view_get_sort_column_id (self, type); 
                sort_type = modest_header_view_get_sort_type (self, type); 
                gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE(sortable),
@@ -919,10 +1122,10 @@ modest_header_view_set_folder_intern (ModestHeaderView *self, TnyFolder *folder)
        }
 
        /* Set new model */
-       modest_header_view_set_model (GTK_TREE_VIEW (self), filter_model);
+       gtk_tree_view_set_model (GTK_TREE_VIEW (self), filter_model);
+       modest_header_view_notify_observers(self, GTK_TREE_MODEL(filter_model),
+                       tny_folder_get_id(folder));
        g_object_unref (G_OBJECT (filter_model));
-/*     modest_header_view_set_model (GTK_TREE_VIEW (self), sortable); */
-/*     g_object_unref (G_OBJECT (sortable)); */
 
        /* Free */
        g_list_free (cols);
@@ -937,6 +1140,9 @@ modest_header_view_sort_by_column_id (ModestHeaderView *self,
        GtkTreeModel *tree_filter, *sortable = NULL; 
        TnyFolderType type;
 
+       g_return_if_fail (self && MODEST_IS_HEADER_VIEW(self));
+       g_return_if_fail (sort_type == GTK_SORT_ASCENDING || sort_type == GTK_SORT_DESCENDING);
+       
        /* Get model and private data */
        priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);            
        tree_filter = gtk_tree_view_get_model (GTK_TREE_VIEW (self));
@@ -945,16 +1151,15 @@ modest_header_view_sort_by_column_id (ModestHeaderView *self,
        
        /* Sort tree model */
        type  = modest_tny_folder_guess_folder_type (priv->folder);
-       gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE(sortable),
+       if (type == TNY_FOLDER_TYPE_INVALID)
+               g_warning ("%s: BUG: TNY_FOLDER_TYPE_INVALID", __FUNCTION__);
+       else {
+               gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE(sortable),
                                              sort_colid,
                                              sort_type);
-       /* Store new sort parameters */
-       modest_header_view_set_sort_params (self, sort_colid, sort_type, type);
-
-       /* Save GConf parameters */
-/*     modest_widget_memory_save (modest_runtime_get_conf(), */
-/*                                G_OBJECT(self), "header-view"); */
-       
+               /* Store new sort parameters */
+               modest_header_view_set_sort_params (self, sort_colid, sort_type, type);
+       }       
 }
 
 void
@@ -965,7 +1170,11 @@ modest_header_view_set_sort_params (ModestHeaderView *self,
 {
        ModestHeaderViewPrivate *priv;
        ModestHeaderViewStyle style;
-
+       
+       g_return_if_fail (self && MODEST_IS_HEADER_VIEW(self));
+       g_return_if_fail (sort_type == GTK_SORT_ASCENDING || sort_type == GTK_SORT_DESCENDING);
+       g_return_if_fail (type != TNY_FOLDER_TYPE_INVALID);
+       
        style = modest_header_view_get_style   (self);
        priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 
@@ -980,6 +1189,9 @@ modest_header_view_get_sort_column_id (ModestHeaderView *self,
        ModestHeaderViewPrivate *priv;
        ModestHeaderViewStyle style;
 
+       g_return_val_if_fail (self && MODEST_IS_HEADER_VIEW(self), 0);
+       g_return_val_if_fail (type != TNY_FOLDER_TYPE_INVALID, 0);
+       
        style = modest_header_view_get_style   (self);
        priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 
@@ -992,7 +1204,10 @@ modest_header_view_get_sort_type (ModestHeaderView *self,
 {
        ModestHeaderViewPrivate *priv;
        ModestHeaderViewStyle style;
-
+       
+       g_return_val_if_fail (self && MODEST_IS_HEADER_VIEW(self), GTK_SORT_DESCENDING);
+       g_return_val_if_fail (type != TNY_FOLDER_TYPE_INVALID, GTK_SORT_DESCENDING);
+       
        style = modest_header_view_get_style   (self);
        priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 
@@ -1029,24 +1244,68 @@ folder_refreshed_cb (ModestMailOperation *mail_op,
        tny_folder_add_observer (folder, TNY_FOLDER_OBSERVER (info->header_view));
        g_mutex_unlock (priv->observers_lock);
 
+       /* Notify the observers that the update is over */
+       g_signal_emit (G_OBJECT (info->header_view), 
+                      signals[UPDATING_MSG_LIST_SIGNAL], 0, FALSE, NULL);
+
+       /* Allow filtering notifications from now on if the current
+          folder is still the same (if not then the user has selected
+          another one to refresh, we should wait until that refresh
+          finishes) */
+       if (priv->folder == folder)
+               priv->notify_status = TRUE;
+
        /* Frees */
+       g_object_unref (info->header_view);
        g_free (info);
 }
 
+static void
+refresh_folder_error_handler (ModestMailOperation *mail_op, 
+                             gpointer user_data)
+{
+       const GError *error = modest_mail_operation_get_error (mail_op);
+
+       if (error->code == TNY_SYSTEM_ERROR_MEMORY ||
+           error->code == TNY_IO_ERROR_WRITE ||
+           error->code == TNY_IO_ERROR_READ) {
+               ModestMailOperationStatus st = modest_mail_operation_get_status (mail_op);
+               /* If the mail op has been cancelled then it's not an error: don't show any message */
+               if (st != MODEST_MAIL_OPERATION_STATUS_CANCELED) {
+                       modest_platform_information_banner (NULL, NULL,
+                                                           dgettext("ke-recv",
+                                                                    "cerm_device_memory_full"));
+               }
+       }
+}
+
 void
 modest_header_view_set_folder (ModestHeaderView *self, 
                               TnyFolder *folder,
+                              gboolean refresh,
                               RefreshAsyncUserCallback callback,
                               gpointer user_data)
 {
        ModestHeaderViewPrivate *priv;
-       ModestWindowMgr *mgr = NULL;
-       GObject *source = NULL;
-       SetFolderHelper *info;
-       priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
+       ModestWindow *main_win;
+       
+       g_return_if_fail (self);
+
+       priv =     MODEST_HEADER_VIEW_GET_PRIVATE(self);
 
+       main_win = modest_window_mgr_get_main_window (modest_runtime_get_window_mgr (),
+                                                     FALSE); /* don't create */
+       if (!main_win) {
+               g_warning ("%s: BUG: no main window", __FUNCTION__);
+               return;
+       }
+                                                     
        if (priv->folder) {
+               if (priv->status_timeout) {
+                       g_source_remove (priv->status_timeout);
+                       priv->status_timeout = 0;
+               }
+
                g_mutex_lock (priv->observers_lock);
                tny_folder_remove_observer (priv->folder, TNY_FOLDER_OBSERVER (self));
                g_object_unref (priv->folder);
@@ -1055,42 +1314,50 @@ modest_header_view_set_folder (ModestHeaderView *self,
        }
 
        if (folder) {
-               ModestMailOperation *mail_op = NULL;
                GtkTreeSelection *selection;
-
-               /* Get main window to use it as source of mail operation */
-               mgr = modest_runtime_get_window_mgr ();
-               source = G_OBJECT (modest_window_mgr_get_main_window (modest_runtime_get_window_mgr ()));
+               SetFolderHelper *info;
+               ModestMailOperation *mail_op = NULL;
 
                /* Set folder in the model */
                modest_header_view_set_folder_intern (self, folder);
-
+               
                /* Pick my reference. Nothing to do with the mail operation */
                priv->folder = g_object_ref (folder);
 
-               /* no message selected */
-               g_signal_emit (G_OBJECT(self), signals[HEADER_SELECTED_SIGNAL], 0, NULL);
-
-               info = g_malloc0 (sizeof(SetFolderHelper));
-               info->header_view = self;
-               info->cb = callback;
-               info->user_data = user_data;
+               /* Do not notify about filterings until the refresh finishes */
+               priv->notify_status = FALSE;
 
-               /* bug 57631: Clear the selection if exists */
+               /* Clear the selection if exists */
                selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(self));
                gtk_tree_selection_unselect_all(selection);
+               g_signal_emit (G_OBJECT(self), signals[HEADER_SELECTED_SIGNAL], 0, NULL);
 
-               /* Create the mail operation (source will be the parent widget) */
-               mail_op = modest_mail_operation_new (MODEST_MAIL_OPERATION_TYPE_RECEIVE, source);
-               modest_mail_operation_queue_add (modest_runtime_get_mail_operation_queue (),
-                                                mail_op);
+               /* Notify the observers that the update begins */
+               g_signal_emit (G_OBJECT (self), signals[UPDATING_MSG_LIST_SIGNAL], 
+                              0, TRUE, NULL);
 
-               /* Refresh the folder asynchronously */
-               modest_mail_operation_refresh_folder (mail_op,
-                                                     folder,
-                                                     folder_refreshed_cb,
-                                                     info);
+               /* create the helper */
+               info = g_malloc0 (sizeof (SetFolderHelper));
+               info->header_view = g_object_ref (self);
+               info->cb = callback;
+               info->user_data = user_data;
 
+               /* Create the mail operation (source will be the parent widget) */
+               mail_op = modest_mail_operation_new_with_error_handling (G_OBJECT(main_win),
+                                                                        refresh_folder_error_handler,
+                                                                        NULL, NULL);
+               if (refresh) {                  
+                       modest_mail_operation_queue_add (modest_runtime_get_mail_operation_queue (),
+                                                        mail_op);
+                       
+                       /* Refresh the folder asynchronously */
+                       modest_mail_operation_refresh_folder (mail_op,
+                                                             folder,
+                                                             folder_refreshed_cb,
+                                                             info);
+               } else {
+                       folder_refreshed_cb (mail_op, folder, info);
+               }
                /* Free */
                g_object_unref (mail_op);
        } else {
@@ -1101,9 +1368,21 @@ modest_header_view_set_folder (ModestHeaderView *self,
                        g_object_unref (G_OBJECT (priv->monitor));
                        priv->monitor = NULL;
                }
-               modest_header_view_set_model (GTK_TREE_VIEW (self), NULL); 
+
+               if (priv->autoselect_reference) {
+                       gtk_tree_row_reference_free (priv->autoselect_reference);
+                       priv->autoselect_reference = NULL;
+               }
+
+               gtk_tree_view_set_model (GTK_TREE_VIEW (self), NULL); 
+
+               modest_header_view_notify_observers(self, NULL, NULL);
 
                g_mutex_unlock (priv->observers_lock);
+
+               /* Notify the observers that the update is over */
+               g_signal_emit (G_OBJECT (self), signals[UPDATING_MSG_LIST_SIGNAL], 
+                              0, FALSE, NULL);
        }
 }
 
@@ -1133,7 +1412,12 @@ on_header_row_activated (GtkTreeView *treeview, GtkTreePath *path,
 
        /* Dont open DELETED messages */
        if (flags & TNY_HEADER_FLAG_DELETED) {
-               modest_platform_information_banner (NULL, NULL, _("mcen_ib_message_already_deleted"));
+               GtkWidget *win;
+               gchar *msg;
+               win = gtk_widget_get_ancestor (GTK_WIDGET (treeview), GTK_TYPE_WINDOW);
+               msg = modest_ui_actions_get_msg_already_deleted_error_msg (MODEST_WINDOW (win));
+               modest_platform_information_banner (NULL, NULL, msg);
+               g_free (msg);
                goto frees;
        }
 
@@ -1198,20 +1482,32 @@ _modest_header_view_change_selection (GtkTreeSelection *selection,
                                      gpointer user_data)
 {
        g_return_if_fail (GTK_IS_TREE_SELECTION (selection));
-       g_return_if_fail (MODEST_IS_HEADER_VIEW (user_data));
-
+       g_return_if_fail (user_data && MODEST_IS_HEADER_VIEW (user_data));
+       
        on_selection_changed (selection, user_data);
 }
 
-static gint compare_priorities (TnyHeaderFlags p1, TnyHeaderFlags p2)
+static gint
+compare_priorities (TnyHeaderFlags p1, TnyHeaderFlags p2)
 {
-       p1 = p1 & TNY_HEADER_FLAG_PRIORITY;
-       p2 = p2 & TNY_HEADER_FLAG_PRIORITY;
-       if (p1 == 0) 
-               p1 = TNY_HEADER_FLAG_LOW_PRIORITY + 1;
-       if (p2 == 0) 
-               p2 = TNY_HEADER_FLAG_LOW_PRIORITY + 1;
-       return p1 - p2;
+       /* HH, LL, NN */
+       if (p1 == p2)
+               return 0;
+
+       /* HL HN */
+       if (p1 == TNY_HEADER_FLAG_HIGH_PRIORITY)
+               return 1;
+
+       /* LH LN */
+       if (p1 == TNY_HEADER_FLAG_LOW_PRIORITY)
+               return -1;
+
+       /* NH */
+       if ((p1 == TNY_HEADER_FLAG_NORMAL_PRIORITY) && (p2 == TNY_HEADER_FLAG_HIGH_PRIORITY))
+               return -1;
+
+       /* NL */
+       return 1;
 }
 
 static gint
@@ -1242,18 +1538,28 @@ cmp_rows (GtkTreeModel *tree_model, GtkTreeIter *iter1, GtkTreeIter *iter2,
 
                return cmp ? cmp : t1 - t2;
                
-       case TNY_HEADER_FLAG_PRIORITY:
-               gtk_tree_model_get (tree_model, iter1, TNY_GTK_HEADER_LIST_MODEL_FLAGS_COLUMN, &val1,
+       case TNY_HEADER_FLAG_PRIORITY_MASK: {
+               TnyHeader *header1 = NULL, *header2 = NULL;
+
+               gtk_tree_model_get (tree_model, iter1, TNY_GTK_HEADER_LIST_MODEL_INSTANCE_COLUMN, &header1,
                                    TNY_GTK_HEADER_LIST_MODEL_DATE_SENT_TIME_T_COLUMN, &t1,-1);
-               gtk_tree_model_get (tree_model, iter2, TNY_GTK_HEADER_LIST_MODEL_FLAGS_COLUMN, &val2,
+               gtk_tree_model_get (tree_model, iter2, TNY_GTK_HEADER_LIST_MODEL_INSTANCE_COLUMN, &header2,
                                    TNY_GTK_HEADER_LIST_MODEL_DATE_SENT_TIME_T_COLUMN, &t2,-1);
 
                /* This is for making priority values respect the intuitive sort relationship 
-                * as HIGH is 11, LOW is 01, and we put NORMAL AS 10 (2) */
-               cmp =  compare_priorities (val1, val2);
+                * as HIGH is 01, LOW is 10, and NORMAL is 00 */
 
-               return cmp ? cmp : t1 - t2;
+               if (header1 && header2) {
+                       cmp =  compare_priorities (tny_header_get_priority (header1), 
+                               tny_header_get_priority (header2));
+                       g_object_unref (header1);
+                       g_object_unref (header2);
 
+                       return cmp ? cmp : t1 - t2;
+               }
+
+               return t1 - t2;
+       }
        default:
                return &iter1 - &iter2; /* oughhhh  */
        }
@@ -1285,61 +1591,108 @@ cmp_subject_rows (GtkTreeModel *tree_model, GtkTreeIter *iter1, GtkTreeIter *ite
 
 /* Drag and drop stuff */
 static void
-drag_data_get_cb (GtkWidget *widget, GdkDragContext *context, 
+drag_data_get_cb (GtkWidget *widget, 
+                 GdkDragContext *context, 
                  GtkSelectionData *selection_data, 
-                 guint info,  guint time, gpointer data)
+                 guint info,  
+                 guint time, 
+                 gpointer data)
 {
-       GtkTreeModel *model = NULL;
-       GtkTreeIter iter;
-       GtkTreePath *source_row = NULL;
-       GtkTreeSelection *sel = NULL;   
-       
-       source_row = get_selected_row (GTK_TREE_VIEW (widget), &model);
-       if ((source_row == NULL) || (!gtk_tree_model_get_iter(model, &iter, source_row))) return;
+       ModestHeaderView *self = NULL;
+       ModestHeaderViewPrivate *priv = NULL;
 
-       switch (info) {
-       case MODEST_HEADER_ROW:
-               gtk_tree_set_row_drag_data (selection_data, model, source_row);
-               break;
-       case MODEST_MSG: {
-               TnyHeader *hdr = NULL;
-               gtk_tree_model_get (model, &iter,
-                                   TNY_GTK_HEADER_LIST_MODEL_INSTANCE_COLUMN, &hdr,
-                                   -1);
-               if (hdr) {
-                       g_object_unref (G_OBJECT(hdr));
-               }
-               break;
-       }
-       default:
-               g_message ("%s: default switch case.", __FUNCTION__);
-       }
+       self = MODEST_HEADER_VIEW (widget);
+       priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 
-       /* Set focus on next header */
-       sel = gtk_tree_view_get_selection(GTK_TREE_VIEW (widget));
-       gtk_tree_path_next (source_row);
-       gtk_tree_selection_select_path (sel, source_row);
+       /* Set the data. Do not use the current selection because it
+          could be different than the selection at the beginning of
+          the d&d */
+       modest_dnd_selection_data_set_paths (selection_data, 
+                                            priv->drag_begin_cached_selected_rows);
+}
+
+/**
+ * We're caching the selected rows at the beginning because the
+ * selection could change between drag-begin and drag-data-get, for
+ * example if we have a set of rows already selected, and then we
+ * click in one of them (without SHIFT key pressed) and begin a drag,
+ * the selection at that moment contains all the selected lines, but
+ * after dropping the selection, the release event provokes that only
+ * the row used to begin the drag is selected, so at the end the
+ * drag&drop affects only one rows instead of all the selected ones.
+ *
+ */
+static void
+drag_begin_cb (GtkWidget *widget, 
+              GdkDragContext *context, 
+              gpointer data)
+{
+       ModestHeaderView *self = NULL;
+       ModestHeaderViewPrivate *priv = NULL;
+       GtkTreeSelection *selection;
+
+       self = MODEST_HEADER_VIEW (widget);
+       priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
 
-       gtk_tree_path_free (source_row);
+       selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (widget));
+       priv->drag_begin_cached_selected_rows = 
+               gtk_tree_selection_get_selected_rows (selection, NULL);
+}
+
+/**
+ * We use the drag-end signal to clear the cached selection, we use
+ * this because this allways happens, whether or not the d&d was a
+ * success
+ */
+static void
+drag_end_cb (GtkWidget *widget, 
+            GdkDragContext *dc, 
+            gpointer data)
+{
+       ModestHeaderView *self = NULL;
+       ModestHeaderViewPrivate *priv = NULL;
+
+       self = MODEST_HEADER_VIEW (widget);
+       priv = MODEST_HEADER_VIEW_GET_PRIVATE(self);
+
+       /* Free cached data */
+       g_list_foreach (priv->drag_begin_cached_selected_rows, (GFunc) gtk_tree_path_free, NULL);
+       g_list_free (priv->drag_begin_cached_selected_rows);
+       priv->drag_begin_cached_selected_rows = NULL;
 }
 
 /* Header view drag types */
 const GtkTargetEntry header_view_drag_types[] = {
-       { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_APP, MODEST_HEADER_ROW },
-       { "text/uri-list",      0,                   MODEST_MSG }, 
+       { GTK_TREE_PATH_AS_STRING_LIST, GTK_TARGET_SAME_APP, MODEST_HEADER_ROW }
 };
 
 static void
-setup_drag_and_drop (GtkTreeView *self)
+enable_drag_and_drop (GtkWidget *self)
 {
-       gtk_drag_source_set (GTK_WIDGET (self),
-                            GDK_BUTTON1_MASK,
+       gtk_drag_source_set (self, GDK_BUTTON1_MASK,
                             header_view_drag_types,
                             G_N_ELEMENTS (header_view_drag_types),
                             GDK_ACTION_MOVE | GDK_ACTION_COPY);
+}
+
+static void
+disable_drag_and_drop (GtkWidget *self)
+{
+       gtk_drag_source_unset (self);
+}
 
+static void
+setup_drag_and_drop (GtkWidget *self)
+{
+       enable_drag_and_drop(self);
        g_signal_connect(G_OBJECT (self), "drag_data_get",
                         G_CALLBACK(drag_data_get_cb), NULL);
+
+       g_signal_connect(G_OBJECT (self), "drag_begin",
+                        G_CALLBACK(drag_begin_cb), NULL);
+
+       g_signal_connect(G_OBJECT (self), "drag_end",
+                        G_CALLBACK(drag_end_cb), NULL);
 }
 
 static GtkTreePath *
@@ -1404,33 +1757,6 @@ on_focus_in (GtkWidget     *self,
        if (selected == NULL) return FALSE;
        selected_path = (GtkTreePath *) selected->data;
 
-       /* Check if we need to scroll */
-       #if GTK_CHECK_VERSION(2, 8, 0) /* TODO: gtk_tree_view_get_visible_range() is only available in GTK+ 2.8 */
-       GtkTreePath *start_path = NULL;
-       GtkTreePath *end_path = NULL;
-       if (gtk_tree_view_get_visible_range (GTK_TREE_VIEW (self),
-                                            &start_path,
-                                            &end_path)) {
-
-               if ((gtk_tree_path_compare (start_path, selected_path) != -1) ||
-                   (gtk_tree_path_compare (end_path, selected_path) != 1)) {
-
-                       /* Scroll to first path */
-                       gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW (self),
-                                                     selected_path,
-                                                     NULL,
-                                                     TRUE,
-                                                     0.5,
-                                                     0.0);
-               }
-       }
-       if (start_path)
-               gtk_tree_path_free (start_path);
-       if (end_path)
-               gtk_tree_path_free (end_path);
-
-       #endif /* GTK_CHECK_VERSION */
-
        /* Frees */     
        g_list_foreach (selected, (GFunc) gtk_tree_path_free, NULL);
        g_list_free (selected);
@@ -1438,47 +1764,85 @@ on_focus_in (GtkWidget     *self,
        return FALSE;
 }
 
-static void
-idle_notify_headers_count_changed_destroy (gpointer data)
+static gboolean 
+on_focus_out (GtkWidget     *self,
+            GdkEventFocus *event,
+            gpointer       user_data)
 {
-       HeadersCountChangedHelper *helper = NULL;
 
-       g_return_if_fail (data != NULL);
-       helper = (HeadersCountChangedHelper *) data; 
-
-       g_object_unref (helper->change);
-       g_slice_free (HeadersCountChangedHelper, helper);
+       if (!gtk_widget_is_focus (self)) {
+               GtkTreeSelection *selection = NULL;
+               GList *selected_rows = NULL;
+               selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (self));
+               if (gtk_tree_selection_count_selected_rows (selection) > 1) {
+                       selected_rows = gtk_tree_selection_get_selected_rows (selection, NULL);
+                       g_signal_handlers_block_by_func (selection, on_selection_changed, self);
+                       gtk_tree_selection_unselect_all (selection);
+                       gtk_tree_selection_select_path (selection, (GtkTreePath *) selected_rows->data);
+                       g_signal_handlers_unblock_by_func (selection, on_selection_changed, self);
+                       g_list_foreach (selected_rows, (GFunc) gtk_tree_path_free, NULL);
+                       g_list_free (selected_rows);
+               }
+       }
+       return FALSE;
 }
 
 static gboolean
-idle_notify_headers_count_changed (gpointer data)
+on_button_release_event(GtkWidget * self, GdkEventButton * event, gpointer userdata)
 {
-       TnyFolder *folder = NULL;
-       ModestHeaderViewPrivate *priv = NULL;
-       HeadersCountChangedHelper *helper = NULL;
+       enable_drag_and_drop(self);
+       return FALSE;
+}
 
-       g_return_val_if_fail (data != NULL, FALSE);
-       helper = (HeadersCountChangedHelper *) data; 
-       g_return_val_if_fail (MODEST_IS_HEADER_VIEW(helper->self), FALSE);
-       g_return_val_if_fail (TNY_FOLDER_CHANGE(helper->change), FALSE);
+static gboolean
+on_button_press_event(GtkWidget * self, GdkEventButton * event, gpointer userdata)
+{
+       GtkTreeSelection *selection = NULL;
+       GtkTreePath *path = NULL;
+       gboolean already_selected = FALSE, already_opened = FALSE;
+       ModestTnySendQueueStatus status = MODEST_TNY_SEND_QUEUE_UNKNOWN;
 
-       folder = tny_folder_change_get_folder (helper->change);
+       if (gtk_tree_view_get_path_at_pos(GTK_TREE_VIEW(self), event->x, event->y, &path, NULL, NULL, NULL)) {
+               GtkTreeIter iter;
+               GtkTreeModel *model;
 
-       priv = MODEST_HEADER_VIEW_GET_PRIVATE (helper->self);
+               selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(self));
+               already_selected = gtk_tree_selection_path_is_selected (selection, path);
+
+               /* Get header from model */
+               model = gtk_tree_view_get_model (GTK_TREE_VIEW (self));
+               if (gtk_tree_model_get_iter (model, &iter, path)) {
+                       GValue value = {0,};
+                       TnyHeader *header;
+
+                       gtk_tree_model_get_value (model, &iter, 
+                                                 TNY_GTK_HEADER_LIST_MODEL_INSTANCE_COLUMN, 
+                                                 &value);
+                       header = (TnyHeader *) g_value_get_object (&value);
+                       if (TNY_IS_HEADER (header)) {
+                               status = modest_tny_all_send_queues_get_msg_status (header);
+                               already_opened = modest_window_mgr_find_registered_header (modest_runtime_get_window_mgr (), 
+                                                                                          header, NULL);
+                       }
+                       g_value_unset (&value);
+               }
+       }
 
-       g_mutex_lock (priv->observers_lock);
+       /* Enable drag and drop only if the user clicks on a row that
+          it's already selected. If not, let him select items using
+          the pointer. If the message is in an OUTBOX and in sending
+          status disable drag and drop as well */
+       if (!already_selected ||
+           status == MODEST_TNY_SEND_QUEUE_SENDING ||
+           already_opened)
+               disable_drag_and_drop(self);
 
-       /* Emit signal to evaluate how headers changes affects to the window view  */
-       g_signal_emit (G_OBJECT(helper->self), 
-                      signals[MSG_COUNT_CHANGED_SIGNAL], 
-                      0, folder, helper->change);
-               
-       /* Added or removed headers, so data stored on cliboard are invalid  */
-       if (modest_email_clipboard_check_source_folder (priv->clipboard, folder))
-           modest_email_clipboard_clear (priv->clipboard);
-           
-       g_mutex_unlock (priv->observers_lock);
+       if (path != NULL)
+               gtk_tree_path_free(path);
 
+       /* If it's already opened then do not let the button-press
+          event go on because it'll perform a message open because
+          we're clicking on to an already selected header */
        return FALSE;
 }
 
@@ -1486,9 +1850,9 @@ static void
 folder_monitor_update (TnyFolderObserver *self, 
                       TnyFolderChange *change)
 {
-       ModestHeaderViewPrivate *priv;
+       ModestHeaderViewPrivate *priv = NULL;
        TnyFolderChangeChanged changed;
-       HeadersCountChangedHelper *helper = NULL;
+       TnyFolder *folder = NULL;
 
        changed = tny_folder_change_get_changed (change);
        
@@ -1496,37 +1860,84 @@ folder_monitor_update (TnyFolderObserver *self,
           view has changed before this call to the observer
           happens */
        priv = MODEST_HEADER_VIEW_GET_PRIVATE (MODEST_HEADER_VIEW (self));
-       if (tny_folder_change_get_folder (change) != priv->folder)
-               return;
+       folder = tny_folder_change_get_folder (change);
+       if (folder != priv->folder)
+               goto frees;
 
-       /* Check header removed  (hide marked as DELETED headers) */
-       if (changed & TNY_FOLDER_CHANGE_CHANGED_ADDED_HEADERS) {
-               modest_header_view_refilter (MODEST_HEADER_VIEW(self));
-       }
+       MODEST_DEBUG_BLOCK (
+                           if (changed & TNY_FOLDER_CHANGE_CHANGED_ADDED_HEADERS)
+                                   g_print ("ADDED %d/%d (r/t) \n", 
+                                            tny_folder_change_get_new_unread_count (change),
+                                            tny_folder_change_get_new_all_count (change));
+                           if (changed & TNY_FOLDER_CHANGE_CHANGED_ALL_COUNT)
+                                   g_print ("ALL COUNT %d\n", 
+                                            tny_folder_change_get_new_all_count (change));
+                           if (changed & TNY_FOLDER_CHANGE_CHANGED_UNREAD_COUNT)
+                                   g_print ("UNREAD COUNT %d\n", 
+                                            tny_folder_change_get_new_unread_count (change));
+                           if (changed & TNY_FOLDER_CHANGE_CHANGED_EXPUNGED_HEADERS)
+                                   g_print ("EXPUNGED %d/%d (r/t) \n", 
+                                            tny_folder_change_get_new_unread_count (change),
+                                            tny_folder_change_get_new_all_count (change));
+                           if (changed & TNY_FOLDER_CHANGE_CHANGED_FOLDER_RENAME)
+                                   g_print ("FOLDER RENAME\n");
+                           if (changed & TNY_FOLDER_CHANGE_CHANGED_MSG_RECEIVED)
+                                   g_print ("MSG RECEIVED %d/%d (r/t) \n", 
+                                            tny_folder_change_get_new_unread_count (change),
+                                            tny_folder_change_get_new_all_count (change));
+                           g_print ("---------------------------------------------------\n");
+                           );
 
        /* Check folder count */
        if ((changed & TNY_FOLDER_CHANGE_CHANGED_ADDED_HEADERS) ||
            (changed & TNY_FOLDER_CHANGE_CHANGED_EXPUNGED_HEADERS)) {
-               helper = g_slice_new0 (HeadersCountChangedHelper);
-               helper->self = MODEST_HEADER_VIEW(self);
-               helper->change = g_object_ref(change);
+
+               g_mutex_lock (priv->observers_lock);
+
+               /* Emit signal to evaluate how headers changes affects
+                  to the window view  */
+               g_signal_emit (G_OBJECT(self), 
+                              signals[MSG_COUNT_CHANGED_SIGNAL], 
+                              0, folder, change);
                
-               g_idle_add_full (G_PRIORITY_DEFAULT, 
-                                idle_notify_headers_count_changed, 
-                                helper,
-                                idle_notify_headers_count_changed_destroy);
+               /* Added or removed headers, so data stored on cliboard are invalid  */
+               if (modest_email_clipboard_check_source_folder (priv->clipboard, folder))
+                       modest_email_clipboard_clear (priv->clipboard);
+           
+               g_mutex_unlock (priv->observers_lock);
        }       
+
+       /* Free */
+ frees:
+       if (folder != NULL)
+               g_object_unref (folder);
+}
+
+gboolean
+modest_header_view_is_empty (ModestHeaderView *self)
+{
+       ModestHeaderViewPrivate *priv;
+       
+       g_return_val_if_fail (self && MODEST_IS_HEADER_VIEW(self), TRUE);
+       
+       priv = MODEST_HEADER_VIEW_GET_PRIVATE (MODEST_HEADER_VIEW (self));
+
+       return priv->status == HEADER_VIEW_EMPTY;
 }
 
 void
 modest_header_view_clear (ModestHeaderView *self)
 {
-       modest_header_view_set_folder (self, NULL, NULL, NULL);
+       g_return_if_fail (self && MODEST_IS_HEADER_VIEW(self));
+       
+       modest_header_view_set_folder (self, NULL, FALSE, NULL, NULL);
 }
 
 void 
 modest_header_view_copy_selection (ModestHeaderView *header_view)
 {
+       g_return_if_fail (header_view && MODEST_IS_HEADER_VIEW(header_view));
+       
        /* Copy selection */
        _clipboard_set_selected_data (header_view, FALSE);
 }
@@ -1538,7 +1949,8 @@ modest_header_view_cut_selection (ModestHeaderView *header_view)
        const gchar **hidding = NULL;
        guint i, n_selected;
 
-       g_return_if_fail (MODEST_IS_HEADER_VIEW (header_view));
+       g_return_if_fail (header_view && MODEST_IS_HEADER_VIEW (header_view));
+       
        priv = MODEST_HEADER_VIEW_GET_PRIVATE (header_view);
 
        /* Copy selection */
@@ -1582,7 +1994,36 @@ _clipboard_set_selected_data (ModestHeaderView *header_view,
        g_object_unref (headers);
 }
 
+typedef struct {
+       ModestHeaderView *self;
+       TnyFolder *folder;
+} NotifyFilterInfo;
+
+static gboolean
+notify_filter_change (gpointer data)
+{
+       NotifyFilterInfo *info = (NotifyFilterInfo *) data;
+
+       g_signal_emit (info->self, 
+                      signals[MSG_COUNT_CHANGED_SIGNAL], 
+                      0, info->folder, NULL);
+
+       return FALSE;
+}
+
+static void
+notify_filter_change_destroy (gpointer data)
+{
+       NotifyFilterInfo *info = (NotifyFilterInfo *) data;
+       ModestHeaderViewPrivate *priv;
+
+       priv = MODEST_HEADER_VIEW_GET_PRIVATE (info->self);
+       priv->status_timeout = 0;
 
+       g_object_unref (info->self);
+       g_object_unref (info->folder);
+       g_slice_free (NotifyFilterInfo, info);
+}
 
 static gboolean
 filter_row (GtkTreeModel *model,
@@ -1596,18 +2037,23 @@ filter_row (GtkTreeModel *model,
        gchar *id = NULL;
        gboolean visible = TRUE;
        gboolean found = FALSE;
-       
+       GValue value = {0,};
+       HeaderViewStatus old_status;
+
        g_return_val_if_fail (MODEST_IS_HEADER_VIEW (user_data), FALSE);
        priv = MODEST_HEADER_VIEW_GET_PRIVATE (user_data);
 
        /* Get header from model */
-       gtk_tree_model_get (model, iter,
-                           TNY_GTK_HEADER_LIST_MODEL_FLAGS_COLUMN, &flags,
-                           TNY_GTK_HEADER_LIST_MODEL_INSTANCE_COLUMN, &header,
-                           -1);
+       gtk_tree_model_get_value (model, iter, TNY_GTK_HEADER_LIST_MODEL_FLAGS_COLUMN, &value);
+       flags = (TnyHeaderFlags) g_value_get_int (&value);
+       g_value_unset (&value);
+       gtk_tree_model_get_value (model, iter, TNY_GTK_HEADER_LIST_MODEL_INSTANCE_COLUMN, &value);
+       header = (TnyHeader *) g_value_get_object (&value);
+       g_value_unset (&value);
        
-       /* Hide mark as deleted heders */
-       if (flags & TNY_HEADER_FLAG_DELETED) {
+       /* Hide deleted and mark as deleted heders */
+       if (flags & TNY_HEADER_FLAG_DELETED ||
+           flags & TNY_HEADER_FLAG_EXPUNGED) {
                visible = FALSE;
                goto frees;
        }
@@ -1619,23 +2065,39 @@ filter_row (GtkTreeModel *model,
        }               
 
        /* Get message id from header (ensure is a valid id) */
-       if (!header) return FALSE;
-       id = g_strdup(tny_header_get_message_id (header));
+       if (!header) {
+               visible = FALSE;
+               goto frees;
+       }
        
        /* Check hiding */
        if (priv->hidding_ids != NULL) {
+               id = tny_header_dup_message_id (header);
                for (i=0; i < priv->n_selected && !found; i++)
                        if (priv->hidding_ids[i] != NULL && id != NULL)
                                found = (!strcmp (priv->hidding_ids[i], id));
        
                visible = !found;
+               g_free(id);
        }
 
-       /* Free */
  frees:
-       if (header)
-               g_object_unref (header);
-       g_free(id);
+       old_status = priv->status;
+       priv->status = ((gboolean) priv->status) && !visible;
+       if ((priv->notify_status) && (priv->status != old_status)) {
+               NotifyFilterInfo *info;
+
+               if (priv->status_timeout)
+                       g_source_remove (priv->status_timeout);
+
+               info = g_slice_new0 (NotifyFilterInfo);
+               info->self = g_object_ref (G_OBJECT (user_data));
+               info->folder = tny_header_get_folder (header);
+               priv->status_timeout = g_timeout_add_full (G_PRIORITY_DEFAULT, 1000,
+                                                          notify_filter_change,
+                                                          info,
+                                                          notify_filter_change_destroy);
+       }
 
        return visible;
 }
@@ -1643,7 +2105,7 @@ filter_row (GtkTreeModel *model,
 static void
 _clear_hidding_filter (ModestHeaderView *header_view) 
 {
-       ModestHeaderViewPrivate *priv;
+       ModestHeaderViewPrivate *priv = NULL;
        guint i;
        
        g_return_if_fail (MODEST_IS_HEADER_VIEW (header_view)); 
@@ -1659,35 +2121,101 @@ _clear_hidding_filter (ModestHeaderView *header_view)
 void 
 modest_header_view_refilter (ModestHeaderView *header_view)
 {
-       GtkTreeModel *model;
-
-       g_return_if_fail (MODEST_IS_HEADER_VIEW (header_view));
+       GtkTreeModel *model = NULL;
+       ModestHeaderViewPrivate *priv = NULL;
 
+       g_return_if_fail (header_view && MODEST_IS_HEADER_VIEW (header_view));
+       priv = MODEST_HEADER_VIEW_GET_PRIVATE(header_view);
+       
        /* Hide cut headers */
        model = gtk_tree_view_get_model (GTK_TREE_VIEW (header_view));
-       if (GTK_IS_TREE_MODEL_FILTER (model))
+       if (GTK_IS_TREE_MODEL_FILTER (model)) {
+               priv->status = HEADER_VIEW_INIT;
                gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (model));
+       }
 }
 
-/**
- * Protected method, selects a row pointed by path
- **/
-void 
-_modest_header_view_select_from_path (ModestHeaderView *self, 
-                                     GtkTreePath *path)
+/* 
+ * Called when an account is removed. If I'm showing a folder of the
+ * account that has been removed then clear the view
+ */
+static void
+on_account_removed (TnyAccountStore *self, 
+                   TnyAccount *account,
+                   gpointer user_data)
+{
+       ModestHeaderViewPrivate *priv = NULL;
+
+       /* Ignore changes in transport accounts */
+       if (TNY_IS_TRANSPORT_ACCOUNT (account))
+               return;
+
+       priv = MODEST_HEADER_VIEW_GET_PRIVATE (user_data);
+
+       if (priv->folder) {
+               TnyAccount *my_account;
+
+               my_account = tny_folder_get_account (priv->folder);
+               if (my_account == account)
+                       modest_header_view_clear (MODEST_HEADER_VIEW (user_data));
+               g_object_unref (my_account);
+       }
+}
+
+void
+modest_header_view_add_observer(ModestHeaderView *header_view,
+                                    ModestHeaderViewObserver *observer)
 {
-       GtkTreeSelection *selection = NULL;
        ModestHeaderViewPrivate *priv;
        
-       g_return_if_fail (MODEST_HEADER_VIEW (self));
-       g_return_if_fail (path != NULL);
+       g_return_if_fail (header_view && MODEST_IS_HEADER_VIEW(header_view));
+       g_return_if_fail (observer && MODEST_IS_HEADER_VIEW_OBSERVER(observer));
 
-       priv = MODEST_HEADER_VIEW_GET_PRIVATE (self);
-       selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (self));
+       priv = MODEST_HEADER_VIEW_GET_PRIVATE(header_view);
+
+       g_mutex_lock(priv->observer_list_lock);
+       priv->observer_list = g_slist_prepend(priv->observer_list, observer);
+       g_mutex_unlock(priv->observer_list_lock);
+}
+
+void 
+modest_header_view_remove_observer(ModestHeaderView *header_view,
+                                  ModestHeaderViewObserver *observer)
+{
+       ModestHeaderViewPrivate *priv;
+
+       g_return_if_fail (header_view && MODEST_IS_HEADER_VIEW(header_view));
+       g_return_if_fail (observer && MODEST_IS_HEADER_VIEW_OBSERVER(observer));
+
+       priv = MODEST_HEADER_VIEW_GET_PRIVATE(header_view);
+
+       g_mutex_lock(priv->observer_list_lock);
+       priv->observer_list = g_slist_remove(priv->observer_list, observer);
+       g_mutex_unlock(priv->observer_list_lock);
+}
+
+static void 
+modest_header_view_notify_observers(ModestHeaderView *header_view,
+                                   GtkTreeModel *model,
+                                   const gchar *tny_folder_id)
+{
+       ModestHeaderViewPrivate *priv = NULL;
+       GSList *iter;
+       ModestHeaderViewObserver *observer;
 
-       /* Unselect previous selection */
-       gtk_tree_selection_unselect_all (selection);
 
-       /* Select new path*/
-       gtk_tree_selection_select_path (selection, path);
+       g_return_if_fail (header_view && MODEST_IS_HEADER_VIEW(header_view));
+       
+       priv = MODEST_HEADER_VIEW_GET_PRIVATE(header_view);
+
+       g_mutex_lock(priv->observer_list_lock);
+       iter = priv->observer_list;
+       while(iter != NULL){
+               observer = MODEST_HEADER_VIEW_OBSERVER(iter->data);
+               modest_header_view_observer_update(observer, model,
+                               tny_folder_id);
+               iter = g_slist_next(iter);
+       }
+       g_mutex_unlock(priv->observer_list_lock);
 }
+