Bug 516933 – Rewrite attachment UI

Rewrite the attachment UI to better utilize GIO and also to migrate from
GnomeIconList to GtkIconView.  This also introduces a "List View" option
similar to Nautilus, as well as the EAttachmentHandler framework for
extending attachment handling (may eventually replace EMFormatHook).

This commit also fixes a number of secondary attachment bugs:

Bug 311609 – new attachment bar should use regular gtk+ expander
Bug 314923 – Drag and Drop in attachment window is inconsistent and
             requires additional click
Bug 338179 – attachment saving ...
Bug 350364 – Action to get info about attachments
Bug 383047 – Viewing mail attachments
Bug 427235 – Can't copy attachment mime type string
Bug 454091 – Cannot save multiple attachments who have the same name
Bug 494629 – Rethink composer's attachment UI
Bug 553970 – Evolution ignores umask when saving attachments
Bug 577375 – mailto: and attach doesn't URL un-escape

1 files changed, 781 insertions, 0 deletions

diff --git a/widgets/misc/e-attachment-paned.c b/widgets/misc/e-attachment-paned.c
new file mode 100644
index 0000000000..853ff48cb2
--- /dev/null
+++ b/widgets/misc/e-attachment-paned.c
@@ -0,0 +1,781 @@
+/*
+ * e-attachment-paned.c
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) version 3.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with the program; if not, see <http://www.gnu.org/licenses/>  
+ *
+ *
+ * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
+ *
+ */
+
+#include "e-attachment-paned.h"
+
+#include <glib/gi18n.h>
+
+#include "e-util/e-binding.h"
+#include "e-util/gconf-bridge.h"
+
+#include "e-attachment-view.h"
+#include "e-attachment-store.h"
+#include "e-attachment-icon-view.h"
+#include "e-attachment-tree-view.h"
+
+#define E_ATTACHMENT_PANED_GET_PRIVATE(obj) \
+	(G_TYPE_INSTANCE_GET_PRIVATE \
+	((obj), E_TYPE_ATTACHMENT_PANED, EAttachmentPanedPrivate))
+
+#define NUM_VIEWS 2
+
+/* Initial height of the lower pane. */
+#define INITIAL_HEIGHT 150
+
+struct _EAttachmentPanedPrivate {
+	GtkTreeModel *model;
+	GtkWidget *expander;
+	GtkWidget *notebook;
+	GtkWidget *combo_box;
+	GtkWidget *icon_view;
+	GtkWidget *tree_view;
+	GtkWidget *show_hide_label;
+	GtkWidget *status_icon;
+	GtkWidget *status_label;
+	GtkWidget *content_area;
+
+	gint active_view;
+	guint expanded : 1;
+};
+
+enum {
+	PROP_0,
+	PROP_ACTIVE_VIEW,
+	PROP_EDITABLE,
+	PROP_EXPANDED
+};
+
+static gpointer parent_class;
+
+static void
+attachment_paned_notify_cb (EAttachmentPaned *paned,
+                            GParamSpec *pspec,
+                            GtkExpander *expander)
+{
+	GtkLabel *label;
+	const gchar *text;
+
+	label = GTK_LABEL (paned->priv->show_hide_label);
+
+	/* Update the expander label. */
+	if (gtk_expander_get_expanded (expander))
+		text = _("Hide _Attachment Bar");
+	else
+		text = _("Show _Attachment Bar");
+
+	gtk_label_set_text_with_mnemonic (label, text);
+}
+
+static void
+attachment_paned_sync_icon_view (EAttachmentPaned *paned)
+{
+	EAttachmentView *source;
+	EAttachmentView *target;
+
+	source = E_ATTACHMENT_VIEW (paned->priv->tree_view);
+	target = E_ATTACHMENT_VIEW (paned->priv->icon_view);
+
+	/* Only sync if the tree view is active.  This prevents the
+	 * two views from endlessly trying to sync with each other. */
+	if (e_attachment_paned_get_active_view (paned) == 1)
+		e_attachment_view_sync_selection (source, target);
+}
+
+static void
+attachment_paned_sync_tree_view (EAttachmentPaned *paned)
+{
+	EAttachmentView *source;
+	EAttachmentView *target;
+
+	source = E_ATTACHMENT_VIEW (paned->priv->icon_view);
+	target = E_ATTACHMENT_VIEW (paned->priv->tree_view);
+
+	/* Only sync if the icon view is active.  This prevents the
+	 * two views from endlessly trying to sync with each other. */
+	if (e_attachment_paned_get_active_view (paned) == 0)
+		e_attachment_view_sync_selection (source, target);
+}
+
+static void
+attachment_paned_update_status (EAttachmentPaned *paned)
+{
+	EAttachmentView *view;
+	EAttachmentStore *store;
+	GtkExpander *expander;
+	GtkLabel *label;
+	guint num_attachments;
+	guint64 total_size;
+	gchar *display_size;
+	gchar *markup;
+
+	view = E_ATTACHMENT_VIEW (paned);
+	store = e_attachment_view_get_store (view);
+	expander = GTK_EXPANDER (paned->priv->expander);
+	label = GTK_LABEL (paned->priv->status_label);
+
+	num_attachments = e_attachment_store_get_num_attachments (store);
+	total_size = e_attachment_store_get_total_size (store);
+	display_size = g_format_size_for_display (total_size);
+
+	markup = g_strdup_printf (
+		"<b>%d</b> %s (%s)", num_attachments, ngettext (
+		"Attachment", "Attachments", num_attachments),
+		display_size);
+	gtk_label_set_markup (label, markup);
+	g_free (markup);
+
+	g_free (display_size);
+
+	if (num_attachments > 0) {
+		gtk_widget_show (paned->priv->status_icon);
+		gtk_widget_show (paned->priv->status_label);
+		gtk_expander_set_expanded (expander, TRUE);
+	} else {
+		gtk_widget_hide (paned->priv->status_icon);
+		gtk_widget_hide (paned->priv->status_label);
+		gtk_expander_set_expanded (expander, FALSE);
+	}
+}
+
+static void
+attachment_paned_set_property (GObject *object,
+                               guint property_id,
+                               const GValue *value,
+                               GParamSpec *pspec)
+{
+	switch (property_id) {
+		case PROP_ACTIVE_VIEW:
+			e_attachment_paned_set_active_view (
+				E_ATTACHMENT_PANED (object),
+				g_value_get_int (value));
+			return;
+
+		case PROP_EDITABLE:
+			e_attachment_view_set_editable (
+				E_ATTACHMENT_VIEW (object),
+				g_value_get_boolean (value));
+			return;
+
+		case PROP_EXPANDED:
+			e_attachment_paned_set_expanded (
+				E_ATTACHMENT_PANED (object),
+				g_value_get_boolean (value));
+			return;
+	}
+
+	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+}
+
+static void
+attachment_paned_get_property (GObject *object,
+                               guint property_id,
+                               GValue *value,
+                               GParamSpec *pspec)
+{
+	switch (property_id) {
+		case PROP_ACTIVE_VIEW:
+			g_value_set_int (
+				value, e_attachment_paned_get_active_view (
+				E_ATTACHMENT_PANED (object)));
+			return;
+
+		case PROP_EDITABLE:
+			g_value_set_boolean (
+				value, e_attachment_view_get_editable (
+				E_ATTACHMENT_VIEW (object)));
+			return;
+
+		case PROP_EXPANDED:
+			g_value_set_boolean (
+				value, e_attachment_paned_get_expanded (
+				E_ATTACHMENT_PANED (object)));
+			return;
+	}
+
+	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+}
+
+static void
+attachment_paned_dispose (GObject *object)
+{
+	EAttachmentPanedPrivate *priv;
+
+	priv = E_ATTACHMENT_PANED_GET_PRIVATE (object);
+
+	if (priv->model != NULL) {
+		g_object_unref (priv->model);
+		priv->model = NULL;
+	}
+
+	if (priv->expander != NULL) {
+		g_object_unref (priv->expander);
+		priv->expander = NULL;
+	}
+
+	if (priv->notebook != NULL) {
+		g_object_unref (priv->notebook);
+		priv->notebook = NULL;
+	}
+
+	if (priv->combo_box != NULL) {
+		g_object_unref (priv->combo_box);
+		priv->combo_box = NULL;
+	}
+
+	if (priv->icon_view != NULL) {
+		g_object_unref (priv->icon_view);
+		priv->icon_view = NULL;
+	}
+
+	if (priv->tree_view != NULL) {
+		g_object_unref (priv->tree_view);
+		priv->tree_view = NULL;
+	}
+
+	if (priv->show_hide_label != NULL) {
+		g_object_unref (priv->show_hide_label);
+		priv->show_hide_label = NULL;
+	}
+
+	if (priv->status_icon != NULL) {
+		g_object_unref (priv->status_icon);
+		priv->status_icon = NULL;
+	}
+
+	if (priv->status_label != NULL) {
+		g_object_unref (priv->status_label);
+		priv->status_label = NULL;
+	}
+
+	if (priv->content_area != NULL) {
+		g_object_unref (priv->content_area);
+		priv->content_area = NULL;
+	}
+
+	/* Chain up to parent's dispose() method. */
+	G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+attachment_paned_constructed (GObject *object)
+{
+	EAttachmentPanedPrivate *priv;
+	GConfBridge *bridge;
+	const gchar *key;
+
+	priv = E_ATTACHMENT_PANED_GET_PRIVATE (object);
+
+	bridge = gconf_bridge_get ();
+
+	/* Set up property-to-property bindings. */
+
+	e_mutual_binding_new (
+		G_OBJECT (object), "active-view",
+		G_OBJECT (priv->combo_box), "active");
+
+	e_mutual_binding_new (
+		G_OBJECT (object), "active-view",
+		G_OBJECT (priv->notebook), "page");
+
+	e_mutual_binding_new (
+		G_OBJECT (object), "editable",
+		G_OBJECT (priv->icon_view), "editable");
+
+	e_mutual_binding_new (
+		G_OBJECT (object), "editable",
+		G_OBJECT (priv->tree_view), "editable");
+
+	e_mutual_binding_new (
+		G_OBJECT (object), "expanded",
+		G_OBJECT (priv->expander), "expanded");
+
+	e_mutual_binding_new (
+		G_OBJECT (object), "expanded",
+		G_OBJECT (priv->combo_box), "sensitive");
+
+	e_mutual_binding_new (
+		G_OBJECT (object), "expanded",
+		G_OBJECT (priv->notebook), "visible");
+
+	/* Set up property-to-GConf bindings. */
+
+	key = "/apps/evolution/shell/attachment_view";
+	gconf_bridge_bind_property (bridge, key, object, "active-view");
+}
+
+static EAttachmentViewPrivate *
+attachment_paned_get_private (EAttachmentView *view)
+{
+	EAttachmentPanedPrivate *priv;
+
+	priv = E_ATTACHMENT_PANED_GET_PRIVATE (view);
+	view = E_ATTACHMENT_VIEW (priv->icon_view);
+
+	return e_attachment_view_get_private (view);
+}
+
+static EAttachmentStore *
+attachment_paned_get_store (EAttachmentView *view)
+{
+	EAttachmentPanedPrivate *priv;
+
+	priv = E_ATTACHMENT_PANED_GET_PRIVATE (view);
+	view = E_ATTACHMENT_VIEW (priv->icon_view);
+
+	return e_attachment_view_get_store (view);
+}
+
+static GtkTreePath *
+attachment_paned_get_path_at_pos (EAttachmentView *view,
+                                  gint x,
+                                  gint y)
+{
+	EAttachmentPanedPrivate *priv;
+
+	priv = E_ATTACHMENT_PANED_GET_PRIVATE (view);
+	view = E_ATTACHMENT_VIEW (priv->icon_view);
+
+	return e_attachment_view_get_path_at_pos (view, x, y);
+}
+
+static GList *
+attachment_paned_get_selected_paths (EAttachmentView *view)
+{
+	EAttachmentPanedPrivate *priv;
+
+	priv = E_ATTACHMENT_PANED_GET_PRIVATE (view);
+	view = E_ATTACHMENT_VIEW (priv->icon_view);
+
+	return e_attachment_view_get_selected_paths (view);
+}
+
+static gboolean
+attachment_paned_path_is_selected (EAttachmentView *view,
+                                   GtkTreePath *path)
+{
+	EAttachmentPanedPrivate *priv;
+
+	priv = E_ATTACHMENT_PANED_GET_PRIVATE (view);
+	view = E_ATTACHMENT_VIEW (priv->icon_view);
+
+	return e_attachment_view_path_is_selected (view, path);
+}
+
+static void
+attachment_paned_select_path (EAttachmentView *view,
+                              GtkTreePath *path)
+{
+	EAttachmentPanedPrivate *priv;
+
+	priv = E_ATTACHMENT_PANED_GET_PRIVATE (view);
+	view = E_ATTACHMENT_VIEW (priv->icon_view);
+
+	e_attachment_view_select_path (view, path);
+}
+
+static void
+attachment_paned_unselect_path (EAttachmentView *view,
+                                GtkTreePath *path)
+{
+	EAttachmentPanedPrivate *priv;
+
+	priv = E_ATTACHMENT_PANED_GET_PRIVATE (view);
+	view = E_ATTACHMENT_VIEW (priv->icon_view);
+
+	e_attachment_view_unselect_path (view, path);
+}
+
+static void
+attachment_paned_select_all (EAttachmentView *view)
+{
+	EAttachmentPanedPrivate *priv;
+
+	priv = E_ATTACHMENT_PANED_GET_PRIVATE (view);
+	view = E_ATTACHMENT_VIEW (priv->icon_view);
+
+	e_attachment_view_select_all (view);
+}
+
+static void
+attachment_paned_unselect_all (EAttachmentView *view)
+{
+	EAttachmentPanedPrivate *priv;
+
+	priv = E_ATTACHMENT_PANED_GET_PRIVATE (view);
+	view = E_ATTACHMENT_VIEW (priv->icon_view);
+
+	e_attachment_view_unselect_all (view);
+}
+
+static void
+attachment_paned_update_actions (EAttachmentView *view)
+{
+	EAttachmentPanedPrivate *priv;
+
+	priv = E_ATTACHMENT_PANED_GET_PRIVATE (view);
+	view = E_ATTACHMENT_VIEW (priv->icon_view);
+
+	e_attachment_view_update_actions (view);
+}
+
+static void
+attachment_paned_class_init (EAttachmentPanedClass *class)
+{
+	GObjectClass *object_class;
+
+	parent_class = g_type_class_peek_parent (class);
+	g_type_class_add_private (class, sizeof (EAttachmentPanedPrivate));
+
+	object_class = G_OBJECT_CLASS (class);
+	object_class->set_property = attachment_paned_set_property;
+	object_class->get_property = attachment_paned_get_property;
+	object_class->dispose = attachment_paned_dispose;
+	object_class->constructed = attachment_paned_constructed;
+
+	g_object_class_install_property (
+		object_class,
+		PROP_ACTIVE_VIEW,
+		g_param_spec_int (
+			"active-view",
+			"Active View",
+			NULL,
+			0,
+			NUM_VIEWS,
+			0,
+			G_PARAM_READWRITE |
+			G_PARAM_CONSTRUCT));
+
+	g_object_class_install_property (
+		object_class,
+		PROP_EXPANDED,
+		g_param_spec_boolean (
+			"expanded",
+			"Expanded",
+			NULL,
+			FALSE,
+			G_PARAM_READWRITE |
+			G_PARAM_CONSTRUCT));
+
+	g_object_class_override_property (
+		object_class, PROP_EDITABLE, "editable");
+}
+
+static void
+attachment_paned_iface_init (EAttachmentViewIface *iface)
+{
+	iface->get_private = attachment_paned_get_private;
+	iface->get_store = attachment_paned_get_store;
+	iface->get_path_at_pos = attachment_paned_get_path_at_pos;
+	iface->get_selected_paths = attachment_paned_get_selected_paths;
+	iface->path_is_selected = attachment_paned_path_is_selected;
+	iface->select_path = attachment_paned_select_path;
+	iface->unselect_path = attachment_paned_unselect_path;
+	iface->select_all = attachment_paned_select_all;
+	iface->unselect_all = attachment_paned_unselect_all;
+	iface->update_actions = attachment_paned_update_actions;
+}
+
+static void
+attachment_paned_init (EAttachmentPaned *paned)
+{
+	EAttachmentView *view;
+	GtkTreeSelection *selection;
+	GtkSizeGroup *size_group;
+	GtkWidget *container;
+	GtkWidget *widget;
+	GtkAction *action;
+
+	paned->priv = E_ATTACHMENT_PANED_GET_PRIVATE (paned);
+	paned->priv->model = e_attachment_store_new ();
+
+	/* Keep the expander label and combo box the same height. */
+	size_group = gtk_size_group_new (GTK_SIZE_GROUP_VERTICAL);
+
+	/* Construct the Attachment Views */
+
+	container = GTK_WIDGET (paned);
+
+	widget = gtk_notebook_new ();
+	gtk_widget_set_size_request (widget, -1, INITIAL_HEIGHT);
+	gtk_notebook_set_show_tabs (GTK_NOTEBOOK (widget), FALSE);
+	gtk_notebook_set_show_border (GTK_NOTEBOOK (widget), FALSE);
+	gtk_paned_pack2 (GTK_PANED (container), widget, FALSE, FALSE);
+	paned->priv->notebook = g_object_ref (widget);
+	gtk_widget_hide (widget);
+
+	container = paned->priv->notebook;
+
+	widget = gtk_scrolled_window_new (NULL, NULL);
+	gtk_scrolled_window_set_policy (
+		GTK_SCROLLED_WINDOW (widget),
+		GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
+	gtk_scrolled_window_set_shadow_type (
+		GTK_SCROLLED_WINDOW (widget), GTK_SHADOW_IN);
+	gtk_notebook_append_page (GTK_NOTEBOOK (container), widget, NULL);
+	gtk_widget_show (widget);
+
+	container = widget;
+
+	widget = e_attachment_icon_view_new ();
+	GTK_WIDGET_SET_FLAGS (widget, GTK_CAN_FOCUS);
+	gtk_icon_view_set_model (GTK_ICON_VIEW (widget), paned->priv->model);
+	gtk_container_add (GTK_CONTAINER (container), widget);
+	paned->priv->icon_view = g_object_ref (widget);
+	gtk_widget_show (widget);
+
+	container = paned->priv->notebook;
+
+	widget = gtk_scrolled_window_new (NULL, NULL);
+	gtk_scrolled_window_set_policy (
+		GTK_SCROLLED_WINDOW (widget),
+		GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
+	gtk_scrolled_window_set_shadow_type (
+		GTK_SCROLLED_WINDOW (widget), GTK_SHADOW_IN);
+	gtk_notebook_append_page (GTK_NOTEBOOK (container), widget, NULL);
+	gtk_widget_show (widget);
+
+	container = widget;
+
+	widget = e_attachment_tree_view_new ();
+	GTK_WIDGET_SET_FLAGS (widget, GTK_CAN_FOCUS);
+	gtk_tree_view_set_model (GTK_TREE_VIEW (widget), paned->priv->model);
+	gtk_container_add (GTK_CONTAINER (container), widget);
+	paned->priv->tree_view = g_object_ref (widget);
+	gtk_widget_show (widget);
+
+	/* Construct the Controls */
+
+	container = GTK_WIDGET (paned);
+
+	widget = gtk_vbox_new (FALSE, 6);
+	gtk_paned_pack1 (GTK_PANED (container), widget, TRUE, FALSE);
+	paned->priv->content_area = g_object_ref (widget);
+	gtk_widget_show (widget);
+
+	container = widget;
+
+	widget = gtk_hbox_new (FALSE, 6);
+	gtk_box_pack_end (GTK_BOX (container), widget, FALSE, FALSE, 0);
+	gtk_widget_show (widget);
+
+	container = widget;
+
+	widget = gtk_expander_new (NULL);
+	gtk_expander_set_spacing (GTK_EXPANDER (widget), 0);
+	gtk_box_pack_start (GTK_BOX (container), widget, TRUE, TRUE, 0);
+	paned->priv->expander = g_object_ref (widget);
+	gtk_widget_show (widget);
+
+	/* The "Add Attachment" button proxies the "add" action from
+	 * one of the two attachment views.  Doesn't matter which. */
+	widget = gtk_button_new ();
+	view = E_ATTACHMENT_VIEW (paned->priv->icon_view);
+	action = e_attachment_view_get_action (view, "add");
+	gtk_button_set_image (GTK_BUTTON (widget), gtk_image_new ());
+#if GTK_CHECK_VERSION(2,16,0)
+	gtk_activatable_set_related_action (GTK_ACTIVATABLE (widget), action);
+#else
+	gtk_action_connect_proxy (action, widget);  /* XXX Deprecated */
+#endif
+	gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
+	gtk_widget_show (widget);
+
+	widget = gtk_combo_box_new_text ();
+	gtk_size_group_add_widget (size_group, widget);
+	gtk_combo_box_append_text (GTK_COMBO_BOX (widget), _("Icon View"));
+	gtk_combo_box_append_text (GTK_COMBO_BOX (widget), _("List View"));
+	gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
+	paned->priv->combo_box = g_object_ref (widget);
+	gtk_widget_show (widget);
+
+	container = paned->priv->expander;
+
+	/* Request the width to be as large as possible, and let the
+	 * GtkExpander allocate what space there is.  This effectively
+	 * packs the widget to expand. */
+	widget = gtk_hbox_new (FALSE, 6);
+	gtk_size_group_add_widget (size_group, widget);
+	gtk_widget_set_size_request (widget, G_MAXINT, -1);
+	gtk_expander_set_label_widget (GTK_EXPANDER (container), widget);
+	gtk_widget_show (widget);
+
+	container = widget;
+
+	widget = gtk_label_new_with_mnemonic (_("Show _Attachment Bar"));
+	gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
+	paned->priv->show_hide_label = g_object_ref (widget);
+	gtk_widget_show (widget);
+
+	widget = gtk_alignment_new (0.5, 0.5, 0.0, 1.0);
+	gtk_box_pack_start (GTK_BOX (container), widget, TRUE, TRUE, 0);
+	gtk_widget_show (widget);
+
+	container = widget;
+
+	widget = gtk_hbox_new (FALSE, 6);
+	gtk_container_add (GTK_CONTAINER (container), widget);
+	gtk_widget_show (widget);
+
+	container = widget;
+
+	widget = gtk_image_new_from_icon_name (
+		"mail-attachment", GTK_ICON_SIZE_MENU);
+	gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
+	paned->priv->status_icon = g_object_ref (widget);
+	gtk_widget_hide (widget);
+
+	widget = gtk_label_new (NULL);
+	gtk_label_set_use_markup (GTK_LABEL (widget), TRUE);
+	gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
+	paned->priv->status_label = g_object_ref (widget);
+	gtk_widget_hide (widget);
+
+	selection = gtk_tree_view_get_selection (
+		GTK_TREE_VIEW (paned->priv->tree_view));
+
+	g_signal_connect_swapped (
+		selection, "changed",
+		G_CALLBACK (attachment_paned_sync_icon_view), paned);
+
+	g_signal_connect_swapped (
+		paned->priv->icon_view, "selection-changed",
+		G_CALLBACK (attachment_paned_sync_tree_view), paned);
+
+	g_signal_connect_swapped (
+		paned->priv->expander, "notify::expanded",
+		G_CALLBACK (attachment_paned_notify_cb), paned);
+
+	g_signal_connect_swapped (
+		paned->priv->model, "notify::num-attachments",
+		G_CALLBACK (attachment_paned_update_status), paned);
+
+	g_signal_connect_swapped (
+		paned->priv->model, "notify::total-size",
+		G_CALLBACK (attachment_paned_update_status), paned);
+
+	g_object_unref (size_group);
+}
+
+GType
+e_attachment_paned_get_type (void)
+{
+	static GType type = 0;
+
+	if (G_UNLIKELY (type == 0)) {
+		static const GTypeInfo type_info = {
+			sizeof (EAttachmentPanedClass),
+			(GBaseInitFunc) NULL,
+			(GBaseFinalizeFunc) NULL,
+			(GClassInitFunc) attachment_paned_class_init,
+			(GClassFinalizeFunc) NULL,
+			NULL,  /* class_data */
+			sizeof (EAttachmentPaned),
+			0,     /* n_preallocs */
+			(GInstanceInitFunc) attachment_paned_init,
+			NULL   /* value_table */
+		};
+
+		static const GInterfaceInfo iface_info = {
+			(GInterfaceInitFunc) attachment_paned_iface_init,
+			(GInterfaceFinalizeFunc) NULL,
+			NULL   /* interface_data */
+		};
+
+		type = g_type_register_static (
+			GTK_TYPE_VPANED, "EAttachmentPaned",
+			&type_info, 0);
+
+		g_type_add_interface_static (
+			type, E_TYPE_ATTACHMENT_VIEW, &iface_info);
+	}
+
+	return type;
+}
+
+GtkWidget *
+e_attachment_paned_new (void)
+{
+	return g_object_new (E_TYPE_ATTACHMENT_PANED, NULL);
+}
+
+GtkWidget *
+e_attachment_paned_get_content_area (EAttachmentPaned *paned)
+{
+	g_return_val_if_fail (E_IS_ATTACHMENT_PANED (paned), NULL);
+
+	return paned->priv->content_area;
+}
+
+gint
+e_attachment_paned_get_active_view (EAttachmentPaned *paned)
+{
+	g_return_val_if_fail (E_IS_ATTACHMENT_PANED (paned), 0);
+
+	return paned->priv->active_view;
+}
+
+void
+e_attachment_paned_set_active_view (EAttachmentPaned *paned,
+                                    gint active_view)
+{
+	g_return_if_fail (E_IS_ATTACHMENT_PANED (paned));
+	g_return_if_fail (active_view >= 0 && active_view < NUM_VIEWS);
+
+	paned->priv->active_view = active_view;
+
+	g_object_notify (G_OBJECT (paned), "active-view");
+}
+
+gboolean
+e_attachment_paned_get_expanded (EAttachmentPaned *paned)
+{
+	g_return_val_if_fail (E_IS_ATTACHMENT_PANED (paned), FALSE);
+
+	return paned->priv->expanded;
+}
+
+void
+e_attachment_paned_set_expanded (EAttachmentPaned *paned,
+                                 gboolean expanded)
+{
+	g_return_if_fail (E_IS_ATTACHMENT_PANED (paned));
+
+	paned->priv->expanded = expanded;
+
+	g_object_notify (G_OBJECT (paned), "expanded");
+}
+
+void
+e_attachment_paned_drag_data_received (EAttachmentPaned *paned,
+                                       GdkDragContext *context,
+                                       gint x,
+                                       gint y,
+                                       GtkSelectionData *selection,
+                                       guint info,
+                                       guint time)
+{
+	g_return_if_fail (E_IS_ATTACHMENT_PANED (paned));
+
+	/* XXX Dirty hack for forwarding drop events. */
+	g_signal_emit_by_name (
+		paned->priv->icon_view, "drag-data-received",
+		context, x, y, selection, info, time);
+}