Add EMailPrintConfigHeaders.

This splits the print dialog's "Headers" tab into a separate widget.

EMailPrintConfigHeaders takes an EMailPartHeaders and displays its print
model, which is a representation of all message headers (except subject)
with an on/off flag for each.  The headers can be toggled and reordered,
and the changes are written back to the print model.

During printing, EMailFormatterPrintHeaders uses the same print model
to determine which headers to show and in what order (except subject).

This approach is much saner than the old method, which was trying to
manipulate WebKitWebView DOM directly to toggle and reorder headers.
This approach also happens to work, whereas the old method did not.

1 files changed, 659 insertions, 0 deletions

diff --git a/mail/e-mail-print-config-headers.c b/mail/e-mail-print-config-headers.c
new file mode 100644
index 0000000000..20705004f2
--- /dev/null
+++ b/mail/e-mail-print-config-headers.c
@@ -0,0 +1,659 @@
+/*
+ * e-mail-print-config-headers.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/>
+ *
+ */
+
+#include "e-mail-print-config-headers.h"
+
+#include <config.h>
+#include <glib/gi18n-lib.h>
+
+#include <em-format/e-mail-formatter-print.h>
+
+#define E_MAIL_PRINT_CONFIG_HEADERS_GET_PRIVATE(obj) \
+	(G_TYPE_INSTANCE_GET_PRIVATE \
+	((obj), E_TYPE_MAIL_PRINT_CONFIG_HEADERS, EMailPrintConfigHeadersPrivate))
+
+struct _EMailPrintConfigHeadersPrivate {
+	GtkTreeView *tree_view;       /* not referenced */
+	GtkWidget *go_top_button;     /* not referenced */
+	GtkWidget *go_up_button;      /* not referenced */
+	GtkWidget *go_down_button;    /* not referenced */
+	GtkWidget *go_bottom_button;  /* not referenced */
+	GtkWidget *select_all_button; /* not referenced */
+	GtkWidget *clear_button;      /* not referenced */
+
+	EMailPartHeaders *part;
+};
+
+enum {
+	PROP_0,
+	PROP_PART
+};
+
+G_DEFINE_TYPE (
+	EMailPrintConfigHeaders,
+	e_mail_print_config_headers,
+	GTK_TYPE_BOX)
+
+static GtkToolItem *
+mail_print_config_headers_new_tool_button (const gchar *icon_name)
+{
+	GIcon *icon;
+	GtkWidget *image;
+
+	icon = g_themed_icon_new_with_default_fallbacks (icon_name);
+	image = gtk_image_new_from_gicon (icon, GTK_ICON_SIZE_SMALL_TOOLBAR);
+	gtk_widget_show (image);
+	g_object_unref (icon);
+
+	return gtk_tool_button_new (image, NULL);
+}
+
+static gboolean
+mail_print_config_headers_first_row_selected (EMailPrintConfigHeaders *config)
+{
+	GtkTreeModel *tree_model;
+	GtkTreeSelection *selection;
+	GtkTreeIter iter;
+
+	tree_model = gtk_tree_view_get_model (config->priv->tree_view);
+	selection = gtk_tree_view_get_selection (config->priv->tree_view);
+
+	if (!gtk_tree_model_iter_nth_child (tree_model, &iter, NULL, 0))
+		return FALSE;
+
+	return gtk_tree_selection_iter_is_selected (selection, &iter);
+}
+
+static gboolean
+mail_print_config_headers_last_row_selected (EMailPrintConfigHeaders *config)
+{
+	GtkTreeModel *tree_model;
+	GtkTreeSelection *selection;
+	GtkTreeIter iter;
+	gint last;
+
+	tree_model = gtk_tree_view_get_model (config->priv->tree_view);
+	selection = gtk_tree_view_get_selection (config->priv->tree_view);
+
+	last = gtk_tree_model_iter_n_children (tree_model, NULL) - 1;
+	if (last < 0)
+		return FALSE;
+
+	if (!gtk_tree_model_iter_nth_child (tree_model, &iter, NULL, last))
+		return FALSE;
+
+	return gtk_tree_selection_iter_is_selected (selection, &iter);
+}
+
+static gboolean
+mail_print_config_headers_move_selection_up (EMailPrintConfigHeaders *config)
+{
+	GtkListStore *list_store;
+	GtkTreeModel *tree_model;
+	GtkTreeSelection *selection;
+	GList *list, *link;
+
+	/* Move all selected rows up one, even
+	 * if the selection is not contiguous. */
+
+	if (mail_print_config_headers_first_row_selected (config))
+		return FALSE;
+
+	selection = gtk_tree_view_get_selection (config->priv->tree_view);
+	list = gtk_tree_selection_get_selected_rows (selection, &tree_model);
+
+	list_store = GTK_LIST_STORE (tree_model);
+
+	for (link = list; link != NULL; link = g_list_next (link)) {
+		GtkTreePath *path = link->data;
+		GtkTreeIter iter;
+		GtkTreeIter prev;
+
+		if (!gtk_tree_model_get_iter (tree_model, &iter, path)) {
+			g_warn_if_reached ();
+			continue;
+		}
+
+		prev = iter;
+		if (!gtk_tree_model_iter_previous (tree_model, &prev)) {
+			g_warn_if_reached ();
+			continue;
+		}
+
+		gtk_list_store_swap (list_store, &iter, &prev);
+	}
+
+	g_list_free_full (list, (GDestroyNotify) gtk_tree_path_free);
+
+	return TRUE;
+}
+
+static gboolean
+mail_print_config_headers_move_selection_down (EMailPrintConfigHeaders *config)
+{
+	GtkListStore *list_store;
+	GtkTreeModel *tree_model;
+	GtkTreeSelection *selection;
+	GList *list, *link;
+
+	/* Move all selected rows down one, even
+	 * if the selection is not contiguous. */
+
+	if (mail_print_config_headers_last_row_selected (config))
+		return FALSE;
+
+	selection = gtk_tree_view_get_selection (config->priv->tree_view);
+	list = gtk_tree_selection_get_selected_rows (selection, &tree_model);
+
+	/* Reverse the list so we don't disturb rows we've already moved. */
+	list = g_list_reverse (list);
+
+	list_store = GTK_LIST_STORE (tree_model);
+
+	for (link = list; link != NULL; link = g_list_next (link)) {
+		GtkTreePath *path = link->data;
+		GtkTreeIter iter;
+		GtkTreeIter next;
+
+		if (!gtk_tree_model_get_iter (tree_model, &iter, path)) {
+			g_warn_if_reached ();
+			continue;
+		}
+
+		next = iter;
+		if (!gtk_tree_model_iter_next (tree_model, &next)) {
+			g_warn_if_reached ();
+			continue;
+		}
+
+		gtk_list_store_swap (list_store, &iter, &next);
+	}
+
+	g_list_free_full (list, (GDestroyNotify) gtk_tree_path_free);
+
+	return TRUE;
+}
+
+static void
+mail_print_config_headers_scroll_to_cursor (EMailPrintConfigHeaders *config)
+{
+	GtkTreePath *path = NULL;
+
+	gtk_tree_view_get_cursor (config->priv->tree_view, &path, NULL);
+
+	if (path != NULL) {
+		gtk_tree_view_scroll_to_cell (
+			config->priv->tree_view,
+			path, NULL, FALSE, 0.0, 0.0);
+		gtk_tree_path_free (path);
+	}
+}
+
+static void
+mail_print_config_headers_update_buttons (EMailPrintConfigHeaders *config)
+{
+	GtkWidget *widget;
+	GtkTreeModel *tree_model;
+	GtkTreeSelection *selection;
+	gboolean first_row_selected;
+	gboolean last_row_selected;
+	gboolean sensitive;
+	gint n_selected_rows;
+	gint n_rows;
+
+	tree_model = gtk_tree_view_get_model (config->priv->tree_view);
+	selection = gtk_tree_view_get_selection (config->priv->tree_view);
+
+	n_rows = gtk_tree_model_iter_n_children (tree_model, NULL);
+	n_selected_rows = gtk_tree_selection_count_selected_rows (selection);
+
+	first_row_selected =
+		mail_print_config_headers_first_row_selected (config);
+	last_row_selected =
+		mail_print_config_headers_last_row_selected (config);
+
+	widget = config->priv->go_top_button;
+	sensitive = (n_selected_rows > 0 && !first_row_selected);
+	gtk_widget_set_sensitive (widget, sensitive);
+
+	widget = config->priv->go_up_button;
+	sensitive = (n_selected_rows > 0 && !first_row_selected);
+	gtk_widget_set_sensitive (widget, sensitive);
+
+	widget = config->priv->go_down_button;
+	sensitive = (n_selected_rows > 0 && !last_row_selected);
+	gtk_widget_set_sensitive (widget, sensitive);
+
+	widget = config->priv->go_bottom_button;
+	sensitive = (n_selected_rows > 0 && !last_row_selected);
+	gtk_widget_set_sensitive (widget, sensitive);
+
+	widget = config->priv->select_all_button;
+	sensitive = (n_selected_rows < n_rows);
+	gtk_widget_set_sensitive (widget, sensitive);
+
+	widget = config->priv->clear_button;
+	sensitive = (n_selected_rows > 0);
+	gtk_widget_set_sensitive (widget, sensitive);
+}
+
+static void
+mail_print_config_headers_go_top_cb (GtkToolButton *tool_button,
+                                     EMailPrintConfigHeaders *config)
+{
+	/* Not the most efficient method, but it's simple and works.
+	 * There should not be so many headers that this is a major
+	 * performance hit anyway. */
+	while (mail_print_config_headers_move_selection_up (config))
+		;
+
+	mail_print_config_headers_scroll_to_cursor (config);
+	mail_print_config_headers_update_buttons (config);
+}
+
+static void
+mail_print_config_headers_go_up_cb (GtkToolButton *tool_button,
+                                    EMailPrintConfigHeaders *config)
+{
+	mail_print_config_headers_move_selection_up (config);
+
+	mail_print_config_headers_scroll_to_cursor (config);
+	mail_print_config_headers_update_buttons (config);
+}
+
+static void
+mail_print_config_headers_go_down_cb (GtkToolButton *tool_button,
+                                      EMailPrintConfigHeaders *config)
+{
+	mail_print_config_headers_move_selection_down (config);
+
+	mail_print_config_headers_scroll_to_cursor (config);
+	mail_print_config_headers_update_buttons (config);
+}
+
+static void
+mail_print_config_headers_go_bottom_cb (GtkToolButton *tool_button,
+                                        EMailPrintConfigHeaders *config)
+{
+	/* Not the most efficient method, but it's simple and works.
+	 * There should not be so many headers that this is a major
+	 * performance hit anyway. */
+	while (mail_print_config_headers_move_selection_down (config))
+		;
+
+	mail_print_config_headers_scroll_to_cursor (config);
+	mail_print_config_headers_update_buttons (config);
+}
+
+static void
+mail_print_config_headers_select_all_cb (GtkToolButton *tool_button,
+                                         EMailPrintConfigHeaders *config)
+{
+	GtkTreeSelection *selection;
+
+	selection = gtk_tree_view_get_selection (config->priv->tree_view);
+	gtk_tree_selection_select_all (selection);
+
+	mail_print_config_headers_update_buttons (config);
+}
+
+static void
+mail_print_config_headers_unselect_all_cb (GtkToolButton *tool_button,
+                                           EMailPrintConfigHeaders *config)
+{
+	GtkTreeSelection *selection;
+
+	selection = gtk_tree_view_get_selection (config->priv->tree_view);
+	gtk_tree_selection_unselect_all (selection);
+
+	mail_print_config_headers_update_buttons (config);
+}
+
+static void
+mail_print_config_headers_toggled_cb (GtkCellRendererToggle *renderer,
+                                      const gchar *path_string,
+                                      EMailPrintConfigHeaders *config)
+{
+	GtkTreeModel *tree_model;
+	GtkTreeIter iter;
+	gboolean include;
+
+	tree_model = gtk_tree_view_get_model (config->priv->tree_view);
+	gtk_tree_model_get_iter_from_string (tree_model, &iter, path_string);
+
+	gtk_tree_model_get (
+		tree_model, &iter,
+		E_MAIL_PART_HEADERS_PRINT_MODEL_COLUMN_INCLUDE, &include, -1);
+
+	gtk_list_store_set (
+		GTK_LIST_STORE (tree_model), &iter,
+		E_MAIL_PART_HEADERS_PRINT_MODEL_COLUMN_INCLUDE, !include, -1);
+
+	mail_print_config_headers_update_buttons (config);
+}
+
+static void
+mail_print_config_headers_selection_changed_cb (GtkTreeSelection *selection,
+                                                EMailPrintConfigHeaders *config)
+{
+	mail_print_config_headers_update_buttons (config);
+}
+
+static void
+mail_print_config_headers_set_part (EMailPrintConfigHeaders *config,
+                                    EMailPartHeaders *part)
+{
+	g_return_if_fail (E_IS_MAIL_PART_HEADERS (part));
+	g_return_if_fail (config->priv->part == NULL);
+
+	config->priv->part = g_object_ref (part);
+}
+
+static void
+mail_print_config_headers_set_property (GObject *object,
+                                        guint property_id,
+                                        const GValue *value,
+                                        GParamSpec *pspec)
+{
+	switch (property_id) {
+		case PROP_PART:
+			mail_print_config_headers_set_part (
+				E_MAIL_PRINT_CONFIG_HEADERS (object),
+				g_value_get_object (value));
+			return;
+	}
+
+	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+}
+
+static void
+mail_print_config_headers_get_property (GObject *object,
+                                        guint property_id,
+                                        GValue *value,
+                                        GParamSpec *pspec)
+{
+	switch (property_id) {
+		case PROP_PART:
+			g_value_take_object (
+				value,
+				e_mail_print_config_headers_ref_part (
+				E_MAIL_PRINT_CONFIG_HEADERS (object)));
+			return;
+	}
+
+	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+}
+
+static void
+mail_print_config_headers_dispose (GObject *object)
+{
+	EMailPrintConfigHeadersPrivate *priv;
+
+	priv = E_MAIL_PRINT_CONFIG_HEADERS_GET_PRIVATE (object);
+
+	g_clear_object (&priv->part);
+
+	/* Chain up to parent's dispose() method. */
+	G_OBJECT_CLASS (e_mail_print_config_headers_parent_class)->
+		dispose (object);
+}
+
+static void
+mail_print_config_headers_constructed (GObject *object)
+{
+	EMailPrintConfigHeaders *config;
+	GtkStyleContext *style_context;
+	GtkWidget *widget;
+	GtkWidget *container;
+	GtkToolItem *tool_item;
+	GtkTreeSelection *selection;
+	GtkTreeViewColumn *column;
+	GtkCellRenderer *renderer;
+	EMailPartHeaders *part;
+	GtkTreeModel *print_model;
+	const gchar *icon_name;
+	const gchar *text;
+
+	config = E_MAIL_PRINT_CONFIG_HEADERS (object);
+
+	/* Chain up to parent's constructed() method. */
+	G_OBJECT_CLASS (e_mail_print_config_headers_parent_class)->
+		constructed (object);
+
+	gtk_container_set_border_width (GTK_CONTAINER (object), 12);
+
+	gtk_orientable_set_orientation (
+		GTK_ORIENTABLE (object), GTK_ORIENTATION_VERTICAL);
+
+	container = GTK_WIDGET (object);
+
+	widget = gtk_scrolled_window_new (NULL, NULL);
+	gtk_scrolled_window_set_shadow_type (
+		GTK_SCROLLED_WINDOW (widget), GTK_SHADOW_IN);
+	gtk_box_pack_start (GTK_BOX (container), widget, TRUE, TRUE, 0);
+	gtk_widget_show (widget);
+
+	container = widget;
+
+	widget = gtk_tree_view_new ();
+	gtk_tree_view_set_reorderable (GTK_TREE_VIEW (widget), TRUE);
+	gtk_container_add (GTK_CONTAINER (container), widget);
+	config->priv->tree_view = GTK_TREE_VIEW (widget);
+	gtk_widget_show (widget);
+
+	container = GTK_WIDGET (object);
+
+	widget = gtk_toolbar_new ();
+	gtk_toolbar_set_icon_size (GTK_TOOLBAR (widget), GTK_ICON_SIZE_MENU);
+	style_context = gtk_widget_get_style_context (widget);
+	gtk_style_context_set_junction_sides (
+		style_context, GTK_JUNCTION_TOP);
+	gtk_style_context_add_class (
+		style_context, GTK_STYLE_CLASS_INLINE_TOOLBAR);
+	gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
+	gtk_widget_show (widget);
+
+	container = widget;
+
+	icon_name = "go-top-symbolic";
+	tool_item = mail_print_config_headers_new_tool_button (icon_name);
+	gtk_toolbar_insert (GTK_TOOLBAR (container), tool_item, -1);
+	config->priv->go_top_button = GTK_WIDGET (tool_item);
+	gtk_widget_show (GTK_WIDGET (tool_item));
+
+	text = _("Move selection to top");
+	gtk_widget_set_tooltip_text (GTK_WIDGET (tool_item), text);
+
+	g_signal_connect (
+		tool_item, "clicked",
+		G_CALLBACK (mail_print_config_headers_go_top_cb),
+		config);
+
+	icon_name = "go-up-symbolic";
+	tool_item = mail_print_config_headers_new_tool_button (icon_name);
+	gtk_toolbar_insert (GTK_TOOLBAR (container), tool_item, -1);
+	config->priv->go_up_button = GTK_WIDGET (tool_item);
+	gtk_widget_show (GTK_WIDGET (tool_item));
+
+	text = _("Move selection up one row");
+	gtk_widget_set_tooltip_text (GTK_WIDGET (tool_item), text);
+
+	g_signal_connect (
+		tool_item, "clicked",
+		G_CALLBACK (mail_print_config_headers_go_up_cb),
+		config);
+
+	icon_name = "go-down-symbolic";
+	tool_item = mail_print_config_headers_new_tool_button (icon_name);
+	gtk_toolbar_insert (GTK_TOOLBAR (container), tool_item, -1);
+	config->priv->go_down_button = GTK_WIDGET (tool_item);
+	gtk_widget_show (GTK_WIDGET (tool_item));
+
+	text = _("Move selection down one row");
+	gtk_widget_set_tooltip_text (GTK_WIDGET (tool_item), text);
+
+	g_signal_connect (
+		tool_item, "clicked",
+		G_CALLBACK (mail_print_config_headers_go_down_cb),
+		config);
+
+	icon_name = "go-bottom-symbolic";
+	tool_item = mail_print_config_headers_new_tool_button (icon_name);
+	gtk_toolbar_insert (GTK_TOOLBAR (container), tool_item, -1);
+	config->priv->go_bottom_button = GTK_WIDGET (tool_item);
+	gtk_widget_show (GTK_WIDGET (tool_item));
+
+	text = _("Move selection to bottom");
+	gtk_widget_set_tooltip_text (GTK_WIDGET (tool_item), text);
+
+	g_signal_connect (
+		tool_item, "clicked",
+		G_CALLBACK (mail_print_config_headers_go_bottom_cb),
+		config);
+
+	icon_name = "edit-select-all-symbolic";
+	tool_item = mail_print_config_headers_new_tool_button (icon_name);
+	gtk_toolbar_insert (GTK_TOOLBAR (container), tool_item, -1);
+	config->priv->select_all_button = GTK_WIDGET (tool_item);
+	gtk_widget_show (GTK_WIDGET (tool_item));
+
+	text = _("Select all headers");
+	gtk_widget_set_tooltip_text (GTK_WIDGET (tool_item), text);
+
+	g_signal_connect (
+		tool_item, "clicked",
+		G_CALLBACK (mail_print_config_headers_select_all_cb),
+		config);
+
+	icon_name = "edit-clear-symbolic";
+	tool_item = mail_print_config_headers_new_tool_button (icon_name);
+	gtk_toolbar_insert (GTK_TOOLBAR (container), tool_item, -1);
+	config->priv->clear_button = GTK_WIDGET (tool_item);
+	gtk_widget_show (GTK_WIDGET (tool_item));
+
+	text = _("Unselect all headers");
+	gtk_widget_set_tooltip_text (GTK_WIDGET (tool_item), text);
+
+	g_signal_connect (
+		tool_item, "clicked",
+		G_CALLBACK (mail_print_config_headers_unselect_all_cb),
+		config);
+
+	column = gtk_tree_view_column_new ();
+	renderer = gtk_cell_renderer_toggle_new ();
+	gtk_tree_view_column_pack_start (column, renderer, FALSE);
+	gtk_tree_view_column_add_attribute (
+		column, renderer, "active",
+		E_MAIL_PART_HEADERS_PRINT_MODEL_COLUMN_INCLUDE);
+	gtk_tree_view_append_column (config->priv->tree_view, column);
+
+	g_signal_connect (
+		renderer, "toggled",
+		G_CALLBACK (mail_print_config_headers_toggled_cb), config);
+
+	column = gtk_tree_view_column_new ();
+	gtk_tree_view_column_set_title (column, _("Header Name"));
+	renderer = gtk_cell_renderer_text_new ();
+	gtk_tree_view_column_pack_start (column, renderer, FALSE);
+	gtk_tree_view_column_add_attribute (
+		column, renderer, "text",
+		E_MAIL_PART_HEADERS_PRINT_MODEL_COLUMN_HEADER_NAME);
+	gtk_tree_view_append_column (config->priv->tree_view, column);
+
+	column = gtk_tree_view_column_new ();
+	gtk_tree_view_column_set_title (column, _("Header Value"));
+	renderer = gtk_cell_renderer_text_new ();
+	gtk_tree_view_column_pack_start (column, renderer, FALSE);
+	gtk_tree_view_column_add_attribute (
+		column, renderer, "text",
+		E_MAIL_PART_HEADERS_PRINT_MODEL_COLUMN_HEADER_VALUE);
+	gtk_tree_view_append_column (config->priv->tree_view, column);
+
+	part = e_mail_print_config_headers_ref_part (config);
+	print_model = e_mail_part_headers_ref_print_model (part);
+	gtk_tree_view_set_model (config->priv->tree_view, print_model);
+	g_object_unref (print_model);
+	g_object_unref (part);
+
+	selection = gtk_tree_view_get_selection (config->priv->tree_view);
+	gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
+
+	g_signal_connect (
+		selection, "changed",
+		G_CALLBACK (mail_print_config_headers_selection_changed_cb),
+		config);
+
+	mail_print_config_headers_update_buttons (config);
+}
+
+static void
+e_mail_print_config_headers_class_init (EMailPrintConfigHeadersClass *class)
+{
+	GObjectClass *object_class;
+
+	g_type_class_add_private (
+		class, sizeof (EMailPrintConfigHeadersPrivate));
+
+	object_class = G_OBJECT_CLASS (class);
+	object_class->set_property = mail_print_config_headers_set_property;
+	object_class->get_property = mail_print_config_headers_get_property;
+	object_class->dispose = mail_print_config_headers_dispose;
+	object_class->constructed = mail_print_config_headers_constructed;
+
+	/**
+	 * EMailPartConfigHeaders:part:
+	 *
+	 * The #EMailPartHeaders to configure.
+	 **/
+	g_object_class_install_property (
+		object_class,
+		PROP_PART,
+		g_param_spec_object (
+			"part",
+			"Part",
+			"The EMailPartHeaders to configure",
+			E_TYPE_MAIL_PART_HEADERS,
+			G_PARAM_READWRITE |
+			G_PARAM_CONSTRUCT_ONLY |
+			G_PARAM_STATIC_STRINGS));
+}
+
+static void
+e_mail_print_config_headers_init (EMailPrintConfigHeaders *config)
+{
+	config->priv = E_MAIL_PRINT_CONFIG_HEADERS_GET_PRIVATE (config);
+}
+
+GtkWidget *
+e_mail_print_config_headers_new (EMailPartHeaders *part)
+{
+	g_return_val_if_fail (E_IS_MAIL_PART_HEADERS (part), NULL);
+
+	return g_object_new (
+		E_TYPE_MAIL_PRINT_CONFIG_HEADERS,
+		"part", part, NULL);
+}
+
+EMailPartHeaders *
+e_mail_print_config_headers_ref_part (EMailPrintConfigHeaders *config)
+{
+	g_return_val_if_fail (E_IS_MAIL_PRINT_CONFIG_HEADERS (config), NULL);
+
+	return g_object_ref (config->priv->part);
+}
+