New folder-tree widget that replaces the shell's folder-tree widget.

2003-11-13  Jeffrey Stedfast  <fejj@ximian.com>

	* em-folder-tree.[c,h]: New folder-tree widget that replaces the
	shell's folder-tree widget.

	* em-folder-tree-model.[c,h]: New source files subclassing
	GtkTreeStore for handling the mess that is drag&drop.

	* em-folder-selection-button.c: Ported to use EMFolderTree.

	* em-folder-selection.c: Ported to use EMFolderTree.

	* em-folder-selector.c: Ported to use EMFolderTree.

	* mail-component.c: Ported to use EMFolderTree.

	* mail-offline-handler.c (storage_go_online): Updated to not pass
	a storage argument.

	* mail-folder-cache.c: Removed storage stuff.

	* mail-send-recv.c (receive_update_got_store): Don't do EStorage*
	stuff anymore.

svn path=/trunk/; revision=23331

1 files changed, 284 insertions, 0 deletions

diff --git a/mail/em-folder-tree-model.c b/mail/em-folder-tree-model.c
new file mode 100644
index 0000000000..786ac94d68
--- /dev/null
+++ b/mail/em-folder-tree-model.c
@@ -0,0 +1,284 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ *  Authors: Jeffrey Stedfast <fejj@ximian.com>
+ *
+ *  Copyright 2003 Ximian, Inc. (www.ximian.com)
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "em-marshal.h"
+#include "em-folder-tree-model.h"
+
+
+/* GObject virtual method overrides */
+static void em_folder_tree_model_class_init (EMFolderTreeModelClass *klass);
+static void em_folder_tree_model_init (EMFolderTreeModel *model);
+static void em_folder_tree_model_finalize (GObject *obj);
+
+/* interface init methods */
+static void tree_model_iface_init (GtkTreeModelIface *iface);
+static void tree_drag_dest_iface_init (GtkTreeDragDestIface *iface);
+static void tree_drag_source_iface_init (GtkTreeDragSourceIface *iface);
+
+/* drag & drop iface methods */
+static gboolean model_drag_data_received (GtkTreeDragDest *drag_dest,
+					  GtkTreePath *dest_path,
+					  GtkSelectionData *selection_data);
+static gboolean model_row_drop_possible  (GtkTreeDragDest *drag_dest,
+					  GtkTreePath *dest_path,
+					  GtkSelectionData *selection_data);
+static gboolean model_row_draggable      (GtkTreeDragSource *drag_source,
+					  GtkTreePath *src_path);
+static gboolean model_drag_data_get      (GtkTreeDragSource *drag_source,
+					  GtkTreePath *src_path,
+					  GtkSelectionData *selection_data);
+static gboolean model_drag_data_delete   (GtkTreeDragSource *drag_source,
+					  GtkTreePath *src_path);
+
+
+enum {
+	DRAG_DATA_RECEIVED,
+	ROW_DROP_POSSIBLE,
+	ROW_DRAGGABLE,
+	DRAG_DATA_GET,
+	DRAG_DATA_DELETE,
+	LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0, };
+
+
+static GtkTreeStore *parent_class = NULL;
+
+
+GType
+em_folder_tree_model_get_type (void)
+{
+	static GType type = 0;
+	
+	if (!type) {
+		static const GTypeInfo info = {
+			sizeof (EMFolderTreeModelClass),
+			NULL, /* base_class_init */
+			NULL, /* base_class_finalize */
+			(GClassInitFunc) em_folder_tree_model_class_init,
+			NULL, /* class_finalize */
+			NULL, /* class_data */
+			sizeof (EMFolderTreeModel),
+			0,    /* n_preallocs */
+			(GInstanceInitFunc) em_folder_tree_model_init,
+		};
+		static const GInterfaceInfo tree_model_info = {
+			(GInterfaceInitFunc) tree_model_iface_init,
+			NULL,
+			NULL
+		};
+		static const GInterfaceInfo drag_dest_info = {
+			(GInterfaceInitFunc) tree_drag_dest_iface_init,
+			NULL,
+			NULL
+		};
+		static const GInterfaceInfo drag_source_info = {
+			(GInterfaceInitFunc) tree_drag_source_iface_init,
+			NULL,
+			NULL
+		};
+		
+		type = g_type_register_static (GTK_TYPE_TREE_STORE, "EMFolderTreeModel", &info, 0);
+		
+		g_type_add_interface_static (type, GTK_TYPE_TREE_MODEL,
+					     &tree_model_info);
+		g_type_add_interface_static (type, GTK_TYPE_TREE_DRAG_DEST,
+					     &drag_dest_info);
+		g_type_add_interface_static (type, GTK_TYPE_TREE_DRAG_SOURCE,
+					     &drag_source_info);
+	}
+	
+	return type;
+}
+
+
+static void
+em_folder_tree_model_class_init (EMFolderTreeModelClass *klass)
+{
+	GObjectClass *object_class = G_OBJECT_CLASS (klass);
+	
+	parent_class = g_type_class_ref (GTK_TYPE_TREE_STORE);
+	
+	object_class->finalize = em_folder_tree_model_finalize;
+	
+	/* signals */
+	signals[DRAG_DATA_RECEIVED] =
+		g_signal_new ("drag-data-received",
+			      G_OBJECT_CLASS_TYPE (object_class),
+			      G_SIGNAL_NO_HOOKS,
+			      G_STRUCT_OFFSET (EMFolderTreeModelClass, drag_data_received),
+			      NULL, NULL,
+			      em_marshal_BOOLEAN__POINTER_POINTER,
+			      G_TYPE_BOOLEAN, 2,
+			      G_TYPE_POINTER,
+			      G_TYPE_POINTER);
+	
+	signals[ROW_DROP_POSSIBLE] =
+		g_signal_new ("row-drop-possible",
+			      G_OBJECT_CLASS_TYPE (object_class),
+			      G_SIGNAL_NO_HOOKS,
+			      G_STRUCT_OFFSET (EMFolderTreeModelClass, row_drop_possible),
+			      NULL, NULL,
+			      em_marshal_BOOLEAN__POINTER_POINTER,
+			      G_TYPE_BOOLEAN, 2,
+			      G_TYPE_POINTER,
+			      G_TYPE_POINTER);
+	
+	signals[ROW_DRAGGABLE] =
+		g_signal_new ("row-draggable",
+			      G_OBJECT_CLASS_TYPE (object_class),
+			      G_SIGNAL_NO_HOOKS,
+			      G_STRUCT_OFFSET (EMFolderTreeModelClass, row_draggable),
+			      NULL, NULL,
+			      em_marshal_BOOLEAN__POINTER,
+			      G_TYPE_BOOLEAN, 1,
+			      G_TYPE_POINTER);
+	
+	signals[DRAG_DATA_GET] =
+		g_signal_new ("drag-data-get",
+			      G_OBJECT_CLASS_TYPE (object_class),
+			      G_SIGNAL_NO_HOOKS,
+			      G_STRUCT_OFFSET (EMFolderTreeModelClass, drag_data_get),
+			      NULL, NULL,
+			      em_marshal_BOOLEAN__POINTER_POINTER,
+			      G_TYPE_BOOLEAN, 2,
+			      G_TYPE_POINTER,
+			      G_TYPE_POINTER);
+	
+	signals[DRAG_DATA_DELETE] =
+		g_signal_new ("drag-data-delete",
+			      G_OBJECT_CLASS_TYPE (object_class),
+			      G_SIGNAL_NO_HOOKS,
+			      G_STRUCT_OFFSET (EMFolderTreeModelClass, drag_data_delete),
+			      NULL, NULL,
+			      em_marshal_BOOLEAN__POINTER,
+			      G_TYPE_BOOLEAN, 1,
+			      G_TYPE_POINTER);
+}
+
+static void
+em_folder_tree_model_init (EMFolderTreeModel *model)
+{
+	;
+}
+
+static void
+em_folder_tree_model_finalize (GObject *obj)
+{
+	G_OBJECT_CLASS (parent_class)->finalize (obj);
+}
+
+
+static void
+tree_model_iface_init (GtkTreeModelIface *iface)
+{
+	;
+}
+
+static void
+tree_drag_dest_iface_init (GtkTreeDragDestIface *iface)
+{
+	iface->drag_data_received = model_drag_data_received;
+	iface->row_drop_possible = model_row_drop_possible;
+}
+
+static void
+tree_drag_source_iface_init (GtkTreeDragSourceIface *iface)
+{
+	iface->row_draggable = model_row_draggable;
+	iface->drag_data_get = model_drag_data_get;
+	iface->drag_data_delete = model_drag_data_delete;
+}
+
+
+static gboolean
+model_drag_data_received (GtkTreeDragDest *drag_dest, GtkTreePath *dest_path, GtkSelectionData *selection_data)
+{
+	EMFolderTreeModel *model = (EMFolderTreeModel *) drag_dest;
+	gboolean retval = FALSE;
+	
+	g_signal_emit (model, signals[DRAG_DATA_RECEIVED], 0, &retval, dest_path, selection_data);
+	
+	return retval;
+}
+
+static gboolean
+model_row_drop_possible (GtkTreeDragDest *drag_dest, GtkTreePath *dest_path, GtkSelectionData *selection_data)
+{
+	EMFolderTreeModel *model = (EMFolderTreeModel *) drag_dest;
+	gboolean retval = FALSE;
+	
+	g_signal_emit (model, signals[ROW_DROP_POSSIBLE], 0, &retval, dest_path, selection_data);
+	
+	return retval;
+}
+
+static gboolean
+model_row_draggable (GtkTreeDragSource *drag_source, GtkTreePath *src_path)
+{
+	EMFolderTreeModel *model = (EMFolderTreeModel *) drag_source;
+	gboolean retval = FALSE;
+	
+	g_signal_emit (model, signals[ROW_DRAGGABLE], 0, &retval, src_path);
+	
+	return retval;
+}
+
+static gboolean
+model_drag_data_get (GtkTreeDragSource *drag_source, GtkTreePath *src_path, GtkSelectionData *selection_data)
+{
+	EMFolderTreeModel *model = (EMFolderTreeModel *) drag_source;
+	gboolean retval = FALSE;
+	
+	g_signal_emit (model, signals[DRAG_DATA_GET], 0, &retval, src_path, selection_data);
+	
+	return retval;
+}
+
+static gboolean
+model_drag_data_delete (GtkTreeDragSource *drag_source, GtkTreePath *src_path)
+{
+	EMFolderTreeModel *model = (EMFolderTreeModel *) drag_source;
+	gboolean retval = FALSE;
+	
+	g_signal_emit (model, signals[DRAG_DATA_DELETE], 0, &retval, src_path);
+	
+	return retval;
+}
+
+
+EMFolderTreeModel *
+em_folder_tree_model_new (int n_columns, GType *types)
+{
+	EMFolderTreeModel *model;
+	
+	model = g_object_new (EM_TYPE_FOLDER_TREE_MODEL, NULL);
+	gtk_tree_store_set_column_types ((GtkTreeStore *) model, n_columns, types);
+	
+	return model;
+}