Radically reorganize source code.

- Collect all shell modules into a new top-level 'modules' directory:

      $(top_srcdir)/modules/addressbook
      $(top_srcdir)/modules/calendar
      $(top_srcdir)/modules/mail

  Nothing is allowed to link to these, not plugins nor other modules.

  THIS SOLVES BUG #571275 AND OPENS THE DOOR TO PORTING TO MAC OS X.

- Mimic the libevolution-mail-shared library from master (except drop
  the "shared" suffix) and have libevolution-mail-importers and all
  mail-related plugins link to it.

- Discard the a11y subdirectories and have the files live alongside
  their counterpart widgets.

1 files changed, 1053 insertions, 0 deletions

diff --git a/modules/mail/e-mail-shell-content.c b/modules/mail/e-mail-shell-content.c
new file mode 100644
index 0000000000..b801093116
--- /dev/null
+++ b/modules/mail/e-mail-shell-content.c
@@ -0,0 +1,1053 @@
+/*
+ * e-mail-shell-content.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-mail-shell-content.h"
+
+#include <glib/gi18n.h>
+#include <camel/camel-store.h>
+#include <libedataserver/e-data-server-util.h>
+
+#include "e-util/gconf-bridge.h"
+#include "widgets/menus/gal-view-etable.h"
+#include "widgets/menus/gal-view-instance.h"
+
+#include "em-search-context.h"
+#include "em-utils.h"
+#include "mail-config.h"
+#include "mail-ops.h"
+
+#include "e-mail-reader.h"
+#include "e-mail-search-bar.h"
+#include "e-mail-shell-backend.h"
+#include "e-mail-shell-view-actions.h"
+
+#define E_MAIL_SHELL_CONTENT_GET_PRIVATE(obj) \
+	(G_TYPE_INSTANCE_GET_PRIVATE \
+	((obj), E_TYPE_MAIL_SHELL_CONTENT, EMailShellContentPrivate))
+
+#define STATE_KEY_SCROLLBAR_POSITION	"ScrollbarPosition"
+#define STATE_KEY_SELECTED_MESSAGE	"SelectedMessage"
+
+struct _EMailShellContentPrivate {
+	GtkWidget *paned;
+	GtkWidget *message_list;
+	GtkWidget *search_bar;
+
+	EMFormatHTMLDisplay *html_display;
+	GalViewInstance *view_instance;
+
+	/* ETable scrolling hack */
+	gdouble default_scrollbar_position;
+
+	guint paned_binding_id;
+	guint scroll_timeout_id;
+
+	/* Signal handler IDs */
+	guint message_list_built_id;
+	guint message_list_scrolled_id;
+
+	guint preview_visible			: 1;
+	guint suppress_message_selection	: 1;
+	guint vertical_view			: 1;
+	guint show_deleted			: 1;
+};
+
+enum {
+	PROP_0,
+	PROP_PREVIEW_VISIBLE,
+	PROP_SHOW_DELETED,
+	PROP_VERTICAL_VIEW
+};
+
+static gpointer parent_class;
+static GType mail_shell_content_type;
+
+static void
+mail_shell_content_etree_unfreeze (MessageList *message_list,
+                                   GdkEvent *event)
+{
+	ETableItem *item;
+	GObject *object;
+
+	item = e_tree_get_item (message_list->tree);
+	object = G_OBJECT (((GnomeCanvasItem *) item)->canvas);
+
+	g_object_set_data (object, "freeze-cursor", 0);
+}
+
+static void
+mail_shell_content_message_list_scrolled_cb (EMailShellContent *mail_shell_content,
+                                             MessageList *message_list)
+{
+	EShellContent *shell_content;
+	EShellView *shell_view;
+	GKeyFile *key_file;
+	const gchar *folder_uri;
+	const gchar *key;
+	gchar *group_name;
+	gdouble position;
+
+	/* Save the scrollbar position for the current folder. */
+
+	folder_uri = message_list->folder_uri;
+
+	if (folder_uri == NULL)
+		return;
+
+	shell_content = E_SHELL_CONTENT (mail_shell_content);
+	shell_view = e_shell_content_get_shell_view (shell_content);
+	key_file = e_shell_view_get_state_key_file (shell_view);
+
+	key = STATE_KEY_SCROLLBAR_POSITION;
+	group_name = g_strdup_printf ("Folder %s", folder_uri);
+	position = message_list_get_scrollbar_position (message_list);
+
+	g_key_file_set_double (key_file, group_name, key, position);
+	e_shell_view_set_state_dirty (shell_view);
+
+	g_free (group_name);
+}
+
+static gboolean
+mail_shell_content_scroll_timeout_cb (EMailShellContent *mail_shell_content)
+{
+	EMailShellContentPrivate *priv = mail_shell_content->priv;
+	EShellContent *shell_content;
+	EShellView *shell_view;
+	MessageList *message_list;
+	EMailReader *reader;
+	GKeyFile *key_file;
+	const gchar *folder_uri;
+	const gchar *key;
+	gchar *group_name;
+
+	/* Initialize the scrollbar position for the current folder
+	 * and setup a callback to handle scrollbar position changes. */
+
+	shell_content = E_SHELL_CONTENT (mail_shell_content);
+	shell_view = e_shell_content_get_shell_view (shell_content);
+	key_file = e_shell_view_get_state_key_file (shell_view);
+
+	reader = E_MAIL_READER (mail_shell_content);
+	message_list = e_mail_reader_get_message_list (reader);
+	folder_uri = message_list->folder_uri;
+
+	if (folder_uri == NULL)
+		goto skip;
+
+	/* Restore the message list scrollbar position. */
+
+	key = STATE_KEY_SCROLLBAR_POSITION;
+	group_name = g_strdup_printf ("Folder %s", folder_uri);
+
+	if (g_key_file_has_key (key_file, group_name, key, NULL)) {
+		gdouble position;
+
+		position = g_key_file_get_double (
+			key_file, group_name, key, NULL);
+		message_list_set_scrollbar_position (message_list, position);
+	}
+
+	g_free (group_name);
+
+skip:
+	priv->message_list_scrolled_id = g_signal_connect_swapped (
+		message_list, "message-list-scrolled",
+		G_CALLBACK (mail_shell_content_message_list_scrolled_cb),
+		mail_shell_content);
+
+	priv->scroll_timeout_id = 0;
+
+	return FALSE;
+}
+
+static void
+mail_shell_content_message_list_built_cb (EMailShellContent *mail_shell_content,
+                                          MessageList *message_list)
+{
+	EMailShellContentPrivate *priv = mail_shell_content->priv;
+	EShellContent *shell_content;
+	EShellView *shell_view;
+	GtkScrolledWindow *scrolled_window;
+	GtkWidget *vscrollbar;
+	GKeyFile *key_file;
+	gchar *uid;
+
+	g_signal_handler_disconnect (
+		message_list, priv->message_list_built_id);
+	priv->message_list_built_id = 0;
+
+	shell_content = E_SHELL_CONTENT (mail_shell_content);
+	shell_view = e_shell_content_get_shell_view (shell_content);
+	key_file = e_shell_view_get_state_key_file (shell_view);
+
+	if (message_list->cursor_uid != NULL)
+		uid = NULL;
+
+	else if (message_list->folder_uri == NULL)
+		uid = NULL;
+
+	else if (mail_shell_content->priv->suppress_message_selection)
+		uid = NULL;
+
+	else {
+		const gchar *folder_uri;
+		const gchar *key;
+		gchar *group_name;
+
+		key = STATE_KEY_SELECTED_MESSAGE;
+		folder_uri = message_list->folder_uri;
+		group_name = g_strdup_printf ("Folder %s", folder_uri);
+		uid = g_key_file_get_string (key_file, group_name, key, NULL);
+		g_free (group_name);
+	}
+
+	if (uid != NULL) {
+		CamelFolder *folder;
+		CamelMessageInfo *info;
+
+		folder = message_list->folder;
+		info = camel_folder_get_message_info (folder, uid);
+		if (info != NULL) {
+			EMailReader *reader;
+
+			reader = E_MAIL_READER (mail_shell_content);
+			e_mail_reader_set_message (reader, uid, TRUE);
+			camel_folder_free_message_info (folder, info);
+		}
+
+		g_free (uid);
+	}
+
+	/* FIXME This is a gross workaround for an ETable bug that I can't
+	 *       fix (Ximian bug #55303).
+	 *
+	 *       Since e_canvas_item_region_show_relay() uses a timeout,
+	 *       we have to use a timeout of the same interval but a lower
+	 *       priority. */
+	priv->scroll_timeout_id = g_timeout_add_full (
+		G_PRIORITY_LOW, 250, (GSourceFunc)
+		mail_shell_content_scroll_timeout_cb,
+		mail_shell_content, NULL);
+
+	/* FIXME This is another ugly hack to hide a side-effect of the
+	 *       previous workaround. */
+	scrolled_window = GTK_SCROLLED_WINDOW (message_list);
+	vscrollbar = gtk_scrolled_window_get_vscrollbar (scrolled_window);
+	g_signal_connect_swapped (
+		vscrollbar, "button-press-event",
+		G_CALLBACK (mail_shell_content_etree_unfreeze),
+		message_list);
+}
+
+static void
+mail_shell_content_display_view_cb (EMailShellContent *mail_shell_content,
+                                    GalView *gal_view)
+{
+	EMailReader *reader;
+	MessageList *message_list;
+
+	reader = E_MAIL_READER (mail_shell_content);
+	message_list = e_mail_reader_get_message_list (reader);
+
+	if (GAL_IS_VIEW_ETABLE (gal_view))
+		gal_view_etable_attach_tree (
+			GAL_VIEW_ETABLE (gal_view), message_list->tree);
+}
+
+static void
+mail_shell_content_message_selected_cb (EMailShellContent *mail_shell_content,
+                                        const gchar *message_uid,
+                                        MessageList *message_list)
+{
+	EShellContent *shell_content;
+	EShellView *shell_view;
+	GKeyFile *key_file;
+	const gchar *folder_uri;
+	const gchar *key;
+	gchar *group_name;
+
+	folder_uri = message_list->folder_uri;
+
+	/* This also gets triggered when selecting a store name on
+	 * the sidebar such as "On This Computer", in which case
+	 * 'folder_uri' will be NULL. */
+	if (folder_uri == NULL)
+		return;
+
+	shell_content = E_SHELL_CONTENT (mail_shell_content);
+	shell_view = e_shell_content_get_shell_view (shell_content);
+	key_file = e_shell_view_get_state_key_file (shell_view);
+
+	key = STATE_KEY_SELECTED_MESSAGE;
+	group_name = g_strdup_printf ("Folder %s", folder_uri);
+
+	if (message_uid != NULL)
+		g_key_file_set_string (key_file, group_name, key, message_uid);
+	else
+		g_key_file_remove_key (key_file, group_name, key, NULL);
+	e_shell_view_set_state_dirty (shell_view);
+
+	g_free (group_name);
+}
+
+static void
+mail_shell_content_set_property (GObject *object,
+                                 guint property_id,
+                                 const GValue *value,
+                                 GParamSpec *pspec)
+{
+	switch (property_id) {
+		case PROP_PREVIEW_VISIBLE:
+			e_mail_shell_content_set_preview_visible (
+				E_MAIL_SHELL_CONTENT (object),
+				g_value_get_boolean (value));
+			return;
+
+		case PROP_SHOW_DELETED:
+			e_mail_shell_content_set_show_deleted (
+				E_MAIL_SHELL_CONTENT (object),
+				g_value_get_boolean (value));
+			return;
+
+		case PROP_VERTICAL_VIEW:
+			e_mail_shell_content_set_vertical_view (
+				E_MAIL_SHELL_CONTENT (object),
+				g_value_get_boolean (value));
+			return;
+	}
+
+	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+}
+
+static void
+mail_shell_content_get_property (GObject *object,
+                                 guint property_id,
+                                 GValue *value,
+                                 GParamSpec *pspec)
+{
+	switch (property_id) {
+		case PROP_PREVIEW_VISIBLE:
+			g_value_set_boolean (
+				value,
+				e_mail_shell_content_get_preview_visible (
+				E_MAIL_SHELL_CONTENT (object)));
+			return;
+
+		case PROP_SHOW_DELETED:
+			g_value_set_boolean (
+				value,
+				e_mail_shell_content_get_show_deleted (
+				E_MAIL_SHELL_CONTENT (object)));
+			return;
+
+		case PROP_VERTICAL_VIEW:
+			g_value_set_boolean (
+				value,
+				e_mail_shell_content_get_vertical_view (
+				E_MAIL_SHELL_CONTENT (object)));
+	}
+
+	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+}
+
+static void
+mail_shell_content_dispose (GObject *object)
+{
+	EMailShellContentPrivate *priv;
+
+	priv = E_MAIL_SHELL_CONTENT_GET_PRIVATE (object);
+
+	if (priv->paned != NULL) {
+		g_object_unref (priv->paned);
+		priv->paned = NULL;
+	}
+
+	if (priv->message_list != NULL) {
+		g_object_unref (priv->message_list);
+		priv->message_list = NULL;
+	}
+
+	if (priv->search_bar != NULL) {
+		g_object_unref (priv->search_bar);
+		priv->search_bar = NULL;
+	}
+
+	if (priv->html_display != NULL) {
+		g_object_unref (priv->html_display);
+		priv->html_display = NULL;
+	}
+
+	if (priv->view_instance != NULL) {
+		g_object_unref (priv->view_instance);
+		priv->view_instance = NULL;
+	}
+
+	/* Chain up to parent's dispose() method. */
+	G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+mail_shell_content_constructed (GObject *object)
+{
+	EMailShellContentPrivate *priv;
+	EShellContent *shell_content;
+	EShellBackend *shell_backend;
+	EShellView *shell_view;
+	EShellViewClass *shell_view_class;
+	EMailReader *reader;
+	MessageList *message_list;
+	GConfBridge *bridge;
+	GtkWidget *container;
+	GtkWidget *widget;
+	GtkHTML *html;
+	GalViewCollection *view_collection;
+	const gchar *key;
+
+	priv = E_MAIL_SHELL_CONTENT_GET_PRIVATE (object);
+	priv->html_display = em_format_html_display_new ();
+
+	/* Chain up to parent's constructed() method. */
+	G_OBJECT_CLASS (parent_class)->constructed (object);
+
+	shell_content = E_SHELL_CONTENT (object);
+	shell_view = e_shell_content_get_shell_view (shell_content);
+	shell_view_class = E_SHELL_VIEW_GET_CLASS (shell_view);
+	shell_backend = e_shell_view_get_shell_backend (shell_view);
+	view_collection = shell_view_class->view_collection;
+
+	html = EM_FORMAT_HTML (priv->html_display)->html;
+
+	/* Build content widgets. */
+
+	container = GTK_WIDGET (object);
+
+	widget = gtk_vpaned_new ();
+	gtk_container_add (GTK_CONTAINER (container), widget);
+	priv->paned = g_object_ref (widget);
+	gtk_widget_show (widget);
+
+	container = widget;
+
+	widget = message_list_new (shell_backend);
+	gtk_paned_add1 (GTK_PANED (container), widget);
+	priv->message_list = g_object_ref (widget);
+	gtk_widget_show (widget);
+
+	widget = gtk_vbox_new (FALSE, 1);
+	gtk_paned_add2 (GTK_PANED (container), widget);
+	gtk_widget_show (widget);
+
+	container = widget;
+
+	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_container_add (GTK_CONTAINER (widget), GTK_WIDGET (html));
+	gtk_box_pack_start (GTK_BOX (container), widget, TRUE, TRUE, 0);
+	gtk_widget_show (GTK_WIDGET (html));
+	gtk_widget_show (widget);
+
+	widget = e_mail_search_bar_new (html);
+	gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
+	priv->search_bar = g_object_ref (widget);
+	gtk_widget_hide (widget);
+
+	g_signal_connect_swapped (
+		widget, "changed",
+		G_CALLBACK (em_format_redraw), priv->html_display);
+
+	/* Load the view instance. */
+
+	e_mail_shell_content_update_view_instance (
+		E_MAIL_SHELL_CONTENT (shell_content));
+
+	/* Bind GObject properties to GConf keys. */
+
+	bridge = gconf_bridge_get ();
+
+	object = G_OBJECT (priv->paned);
+	key = "/apps/evolution/mail/display/paned_size";
+	gconf_bridge_bind_property_delayed (bridge, key, object, "position");
+
+	object = G_OBJECT (shell_content);
+	key = "/apps/evolution/mail/display/show_deleted";
+	gconf_bridge_bind_property (bridge, key, object, "show-deleted");
+
+	/* Message list customizations. */
+
+	reader = E_MAIL_READER (shell_content);
+	message_list = e_mail_reader_get_message_list (reader);
+
+	g_signal_connect_swapped (
+		message_list, "message-selected",
+		G_CALLBACK (mail_shell_content_message_selected_cb),
+		shell_content);
+}
+
+static guint32
+mail_shell_content_check_state (EShellContent *shell_content)
+{
+	return e_mail_reader_check_state (E_MAIL_READER (shell_content));
+}
+
+static GtkActionGroup *
+mail_shell_content_get_action_group (EMailReader *reader)
+{
+	EShellContent *shell_content;
+	EShellWindow *shell_window;
+	EShellView *shell_view;
+
+	shell_content = E_SHELL_CONTENT (reader);
+	shell_view = e_shell_content_get_shell_view (shell_content);
+	shell_window = e_shell_view_get_shell_window (shell_view);
+
+	return E_SHELL_WINDOW_ACTION_GROUP_MAIL (shell_window);
+}
+
+static gboolean
+mail_shell_content_get_hide_deleted (EMailReader *reader)
+{
+	EMailShellContent *mail_shell_content;
+
+	mail_shell_content = E_MAIL_SHELL_CONTENT (reader);
+
+	return !e_mail_shell_content_get_show_deleted (mail_shell_content);
+}
+
+static EMFormatHTMLDisplay *
+mail_shell_content_get_html_display (EMailReader *reader)
+{
+	EMailShellContentPrivate *priv;
+
+	priv = E_MAIL_SHELL_CONTENT_GET_PRIVATE (reader);
+
+	return priv->html_display;
+}
+
+static MessageList *
+mail_shell_content_get_message_list (EMailReader *reader)
+{
+	EMailShellContentPrivate *priv;
+
+	priv = E_MAIL_SHELL_CONTENT_GET_PRIVATE (reader);
+
+	return MESSAGE_LIST (priv->message_list);
+}
+
+static EShellBackend *
+mail_shell_content_get_shell_backend (EMailReader *reader)
+{
+	EShellContent *shell_content;
+	EShellView *shell_view;
+
+	shell_content = E_SHELL_CONTENT (reader);
+	shell_view = e_shell_content_get_shell_view (shell_content);
+
+	return e_shell_view_get_shell_backend (shell_view);
+}
+
+static GtkWindow *
+mail_shell_content_get_window (EMailReader *reader)
+{
+	EShellContent *shell_content;
+	EShellWindow *shell_window;
+	EShellView *shell_view;
+
+	shell_content = E_SHELL_CONTENT (reader);
+	shell_view = e_shell_content_get_shell_view (shell_content);
+	shell_window = e_shell_view_get_shell_window (shell_view);
+
+	return GTK_WINDOW (shell_window);
+}
+
+static void
+mail_shell_content_set_folder (EMailReader *reader,
+                               CamelFolder *folder,
+                               const gchar *folder_uri)
+{
+	EMailShellContentPrivate *priv;
+	EMailReaderIface *default_iface;
+	MessageList *message_list;
+	gboolean different_folder;
+
+	priv = E_MAIL_SHELL_CONTENT_GET_PRIVATE (reader);
+
+	message_list = e_mail_reader_get_message_list (reader);
+
+	message_list_freeze (message_list);
+
+	different_folder =
+		message_list->folder != NULL &&
+		folder != message_list->folder;
+
+	/* Chain up to interface's default set_folder() method. */
+	default_iface = g_type_default_interface_peek (E_TYPE_MAIL_READER);
+	default_iface->set_folder (reader, folder, folder_uri);
+
+	if (folder == NULL)
+		goto exit;
+
+	mail_refresh_folder (folder, NULL, NULL);
+
+	/* This function gets triggered several times at startup,
+	 * so we don't want to reset the message suppression state
+	 * unless we're actually switching to a different folder. */
+	if (different_folder)
+		priv->suppress_message_selection = FALSE;
+
+	/* This is a one-time-only callback. */
+	if (message_list->cursor_uid == NULL && priv->message_list_built_id == 0)
+		priv->message_list_built_id = g_signal_connect_swapped (
+			message_list, "message-list-built",
+			G_CALLBACK (mail_shell_content_message_list_built_cb),
+			reader);
+
+exit:
+	message_list_thaw (message_list);
+}
+
+static void
+mail_shell_content_show_search_bar (EMailReader *reader)
+{
+	EMailShellContentPrivate *priv;
+
+	priv = E_MAIL_SHELL_CONTENT_GET_PRIVATE (reader);
+
+	gtk_widget_show (priv->search_bar);
+}
+
+static void
+mail_shell_content_class_init (EMailShellContentClass *class)
+{
+	GObjectClass *object_class;
+	EShellContentClass *shell_content_class;
+
+	parent_class = g_type_class_peek_parent (class);
+	g_type_class_add_private (class, sizeof (EMailShellContentPrivate));
+
+	object_class = G_OBJECT_CLASS (class);
+	object_class->set_property = mail_shell_content_set_property;
+	object_class->get_property = mail_shell_content_get_property;
+	object_class->dispose = mail_shell_content_dispose;
+	object_class->constructed = mail_shell_content_constructed;
+
+	shell_content_class = E_SHELL_CONTENT_CLASS (class);
+	shell_content_class->new_search_context = em_search_context_new;
+	shell_content_class->check_state = mail_shell_content_check_state;
+
+	g_object_class_install_property (
+		object_class,
+		PROP_PREVIEW_VISIBLE,
+		g_param_spec_boolean (
+			"preview-visible",
+			_("Preview is Visible"),
+			_("Whether the preview pane is visible"),
+			TRUE,
+			G_PARAM_READWRITE));
+
+	g_object_class_install_property (
+		object_class,
+		PROP_SHOW_DELETED,
+		g_param_spec_boolean (
+			"show-deleted",
+			"Show Deleted",
+			NULL,
+			FALSE,
+			G_PARAM_READWRITE));
+
+	g_object_class_install_property (
+		object_class,
+		PROP_VERTICAL_VIEW,
+		g_param_spec_boolean (
+			"vertical-view",
+			_("Vertical View"),
+			_("Whether vertical view is enabled"),
+			FALSE,
+			G_PARAM_READWRITE));
+}
+
+static void
+mail_shell_content_iface_init (EMailReaderIface *iface)
+{
+	iface->get_action_group = mail_shell_content_get_action_group;
+	iface->get_hide_deleted = mail_shell_content_get_hide_deleted;
+	iface->get_html_display = mail_shell_content_get_html_display;
+	iface->get_message_list = mail_shell_content_get_message_list;
+	iface->get_shell_backend = mail_shell_content_get_shell_backend;
+	iface->get_window = mail_shell_content_get_window;
+	iface->set_folder = mail_shell_content_set_folder;
+	iface->show_search_bar = mail_shell_content_show_search_bar;
+}
+
+static void
+mail_shell_content_init (EMailShellContent *mail_shell_content)
+{
+	mail_shell_content->priv =
+		E_MAIL_SHELL_CONTENT_GET_PRIVATE (mail_shell_content);
+
+	mail_shell_content->priv->preview_visible = TRUE;
+
+	/* Postpone widget construction until we have a shell view. */
+}
+
+GType
+e_mail_shell_content_get_type (void)
+{
+	return mail_shell_content_type;
+}
+
+void
+e_mail_shell_content_register_type (GTypeModule *type_module)
+{
+	static const GTypeInfo type_info = {
+		sizeof (EMailShellContentClass),
+		(GBaseInitFunc) NULL,
+		(GBaseFinalizeFunc) NULL,
+		(GClassInitFunc) mail_shell_content_class_init,
+		(GClassFinalizeFunc) NULL,
+		NULL,  /* class_data */
+		sizeof (EMailShellContent),
+		0,     /* n_preallocs */
+		(GInstanceInitFunc) mail_shell_content_init,
+		NULL   /* value_table */
+	};
+
+	static const GInterfaceInfo iface_info = {
+		(GInterfaceInitFunc) mail_shell_content_iface_init,
+		(GInterfaceFinalizeFunc) NULL,
+		NULL  /* interface_data */
+	};
+
+	mail_shell_content_type = g_type_module_register_type (
+		type_module, E_TYPE_SHELL_CONTENT,
+		"EMailShellContent", &type_info, 0);
+
+	g_type_module_add_interface (
+		type_module, mail_shell_content_type,
+		E_TYPE_MAIL_READER, &iface_info);
+}
+
+GtkWidget *
+e_mail_shell_content_new (EShellView *shell_view)
+{
+	g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), NULL);
+
+	return g_object_new (
+		E_TYPE_MAIL_SHELL_CONTENT,
+		"shell-view", shell_view, NULL);
+}
+
+gboolean
+e_mail_shell_content_get_preview_visible (EMailShellContent *mail_shell_content)
+{
+	g_return_val_if_fail (
+		E_IS_MAIL_SHELL_CONTENT (mail_shell_content), FALSE);
+
+	return mail_shell_content->priv->preview_visible;
+}
+
+void
+e_mail_shell_content_set_preview_visible (EMailShellContent *mail_shell_content,
+                                          gboolean preview_visible)
+{
+	GtkPaned *paned;
+	GtkWidget *child;
+
+	g_return_if_fail (E_IS_MAIL_SHELL_CONTENT (mail_shell_content));
+
+	if (preview_visible == mail_shell_content->priv->preview_visible)
+		return;
+
+	paned = GTK_PANED (mail_shell_content->priv->paned);
+	child = gtk_paned_get_child2 (paned);
+
+	if (preview_visible)
+		gtk_widget_show (child);
+	else
+		gtk_widget_hide (child);
+
+	mail_shell_content->priv->preview_visible = preview_visible;
+
+	g_object_notify (G_OBJECT (mail_shell_content), "preview-visible");
+}
+
+gboolean
+e_mail_shell_content_get_show_deleted (EMailShellContent *mail_shell_content)
+{
+	g_return_val_if_fail (
+		E_IS_MAIL_SHELL_CONTENT (mail_shell_content), FALSE);
+
+	return mail_shell_content->priv->show_deleted;
+}
+
+void
+e_mail_shell_content_set_show_deleted (EMailShellContent *mail_shell_content,
+                                       gboolean show_deleted)
+{
+	g_return_if_fail (E_IS_MAIL_SHELL_CONTENT (mail_shell_content));
+
+	mail_shell_content->priv->show_deleted = show_deleted;
+
+	g_object_notify (G_OBJECT (mail_shell_content), "show-deleted");
+}
+
+gboolean
+e_mail_shell_content_get_vertical_view (EMailShellContent *mail_shell_content)
+{
+	g_return_val_if_fail (
+		E_IS_MAIL_SHELL_CONTENT (mail_shell_content), FALSE);
+
+	return mail_shell_content->priv->vertical_view;
+}
+
+void
+e_mail_shell_content_set_vertical_view (EMailShellContent *mail_shell_content,
+                                        gboolean vertical_view)
+{
+	GConfBridge *bridge;
+	GtkWidget *old_paned;
+	GtkWidget *new_paned;
+	GtkWidget *child1;
+	GtkWidget *child2;
+	guint binding_id;
+	const gchar *key;
+
+	g_return_if_fail (E_IS_MAIL_SHELL_CONTENT (mail_shell_content));
+
+	if (vertical_view == mail_shell_content->priv->vertical_view)
+		return;
+
+	bridge = gconf_bridge_get ();
+	old_paned = mail_shell_content->priv->paned;
+	binding_id = mail_shell_content->priv->paned_binding_id;
+
+	child1 = gtk_paned_get_child1 (GTK_PANED (old_paned));
+	child2 = gtk_paned_get_child2 (GTK_PANED (old_paned));
+
+	if (binding_id > 0)
+		gconf_bridge_unbind (bridge, binding_id);
+
+	if (vertical_view) {
+		new_paned = gtk_hpaned_new ();
+		key = "/apps/evolution/mail/display/hpaned_size";
+	} else {
+		new_paned = gtk_vpaned_new ();
+		key = "/apps/evolution/mail/display/paned_size";
+	}
+
+	gtk_widget_reparent (child1, new_paned);
+	gtk_widget_reparent (child2, new_paned);
+	gtk_widget_show (new_paned);
+
+	gtk_widget_destroy (old_paned);
+	gtk_container_add (GTK_CONTAINER (mail_shell_content), new_paned);
+
+	binding_id = gconf_bridge_bind_property_delayed (
+		bridge, key, G_OBJECT (new_paned), "position");
+
+	mail_shell_content->priv->vertical_view = vertical_view;
+	mail_shell_content->priv->paned_binding_id = binding_id;
+	mail_shell_content->priv->paned = g_object_ref (new_paned);
+
+	e_mail_shell_content_update_view_instance (mail_shell_content);
+
+	g_object_notify (G_OBJECT (mail_shell_content), "vertical-view");
+}
+
+GalViewInstance *
+e_mail_shell_content_get_view_instance (EMailShellContent *mail_shell_content)
+{
+	g_return_val_if_fail (
+		E_IS_MAIL_SHELL_CONTENT (mail_shell_content), NULL);
+
+	return mail_shell_content->priv->view_instance;
+}
+
+void
+e_mail_shell_content_set_search_strings (EMailShellContent *mail_shell_content,
+                                         GSList *search_strings)
+{
+	EMailSearchBar *search_bar;
+	ESearchingTokenizer *tokenizer;
+
+	g_return_if_fail (E_IS_MAIL_SHELL_CONTENT (mail_shell_content));
+
+	search_bar = E_MAIL_SEARCH_BAR (mail_shell_content->priv->search_bar);
+	tokenizer = e_mail_search_bar_get_tokenizer (search_bar);
+
+	e_searching_tokenizer_set_secondary_case_sensitivity (tokenizer, FALSE);
+	e_searching_tokenizer_set_secondary_search_string (tokenizer, NULL);
+
+	while (search_strings != NULL) {
+		e_searching_tokenizer_add_secondary_search_string (
+			tokenizer, search_strings->data);
+		search_strings = g_slist_next (search_strings);
+	}
+
+	e_mail_search_bar_changed (search_bar);
+}
+
+void
+e_mail_shell_content_update_view_instance (EMailShellContent *mail_shell_content)
+{
+	EMailReader *reader;
+	EShellContent *shell_content;
+	EShellView *shell_view;
+	EShellViewClass *shell_view_class;
+	GalViewCollection *view_collection;
+	GalViewInstance *view_instance;
+	MessageList *message_list;
+	gboolean outgoing_folder;
+	gboolean show_vertical_view;
+	gchar *view_id;
+
+	g_return_if_fail (E_IS_MAIL_SHELL_CONTENT (mail_shell_content));
+
+	shell_content = E_SHELL_CONTENT (mail_shell_content);
+	shell_view = e_shell_content_get_shell_view (shell_content);
+	shell_view_class = E_SHELL_VIEW_GET_CLASS (shell_view);
+	view_collection = shell_view_class->view_collection;
+
+	reader = E_MAIL_READER (mail_shell_content);
+	message_list = e_mail_reader_get_message_list (reader);
+
+	/* If no folder is selected, return silently. */
+	if (message_list->folder == NULL)
+		return;
+
+	/* If we have a folder, we should also have a URI. */
+	g_return_if_fail (message_list->folder_uri != NULL);
+
+	if (mail_shell_content->priv->view_instance != NULL) {
+		g_object_unref (mail_shell_content->priv->view_instance);
+		mail_shell_content->priv->view_instance = NULL;
+	}
+
+	view_id = mail_config_folder_to_safe_url (message_list->folder);
+	view_instance = e_shell_view_new_view_instance (shell_view, view_id);
+	mail_shell_content->priv->view_instance = view_instance;
+
+	show_vertical_view =
+		e_mail_shell_content_get_vertical_view (mail_shell_content);
+
+	if (show_vertical_view) {
+		gchar *filename;
+		gchar *safe_view_id;
+
+		/* Force the view instance into vertical view. */
+
+		g_free (view_instance->custom_filename);
+		g_free (view_instance->current_view_filename);
+
+		safe_view_id = g_strdup (view_id);
+		e_filename_make_safe (safe_view_id);
+
+		filename = g_strdup_printf (
+			"custom_wide_view-%s.xml", safe_view_id);
+		view_instance->custom_filename = g_build_filename (
+			view_collection->local_dir, filename, NULL);
+		g_free (filename);
+
+		filename = g_strdup_printf (
+			"current_wide_view-%s.xml", safe_view_id);
+		view_instance->current_view_filename = g_build_filename (
+			view_collection->local_dir, filename, NULL);
+		g_free (filename);
+
+		g_free (safe_view_id);
+	}
+
+	g_free (view_id);
+
+	outgoing_folder =
+		em_utils_folder_is_drafts (
+			message_list->folder, message_list->folder_uri) ||
+		em_utils_folder_is_outbox (
+			message_list->folder, message_list->folder_uri) ||
+		em_utils_folder_is_sent (
+			message_list->folder, message_list->folder_uri);
+
+	if (outgoing_folder) {
+		if (show_vertical_view)
+			gal_view_instance_set_default_view (
+				view_instance, "Wide_View_Sent");
+		else
+			gal_view_instance_set_default_view (
+				view_instance, "As_Sent_Folder");
+	} else if (show_vertical_view) {
+		gal_view_instance_set_default_view (
+			view_instance, "Wide_View_Normal");
+	}
+
+	gal_view_instance_load (view_instance);
+
+	if (!gal_view_instance_exists (view_instance)) {
+		gchar *state_filename;
+
+		state_filename = mail_config_folder_to_cachename (
+			message_list->folder, "et-header-");
+
+		if (g_file_test (state_filename, G_FILE_TEST_IS_REGULAR)) {
+			ETableSpecification *spec;
+			ETableState *state;
+			GalView *view;
+			gchar *spec_filename;
+
+			spec = e_table_specification_new ();
+			spec_filename = g_build_filename (
+				EVOLUTION_ETSPECDIR,
+				"message-list.etspec",
+				NULL);
+			e_table_specification_load_from_file (
+				spec, spec_filename);
+			g_free (spec_filename);
+
+			state = e_table_state_new ();
+			view = gal_view_etable_new (spec, "");
+
+			e_table_state_load_from_file (
+				state, state_filename);
+			gal_view_etable_set_state (
+				GAL_VIEW_ETABLE (view), state);
+			gal_view_instance_set_custom_view (
+				view_instance, view);
+
+			g_object_unref (state);
+			g_object_unref (view);
+			g_object_unref (spec);
+		}
+
+		g_free (state_filename);
+	}
+
+	g_signal_connect (
+		view_instance, "display-view",
+		G_CALLBACK (mail_shell_content_display_view_cb),
+		mail_shell_content);
+
+	mail_shell_content_display_view_cb (
+		mail_shell_content,
+		gal_view_instance_get_current_view (view_instance));
+}