[gnome-builder/wip/gtk4-port] libide/webkit: add go_back/go_forward API

[Christian Hergert <chergert src gnome org>]

commit 52599959c0e5c7370e6ec62823ff2c9767e739a6
Author: Christian Hergert <chergert redhat com>
Date:   Fri Jun 3 15:24:35 2022 -0700

    libide/webkit: add go_back/go_forward API

 src/libide/webkit/ide-webkit-page.c | 42 +++++++++++++++++++++++++++++++++++++
 src/libide/webkit/ide-webkit-page.h |  4 ++++
 2 files changed, 46 insertions(+)
---
diff --git a/src/libide/webkit/ide-webkit-page.c b/src/libide/webkit/ide-webkit-page.c
index 4bdbd7234..2537ee1ca 100644
--- a/src/libide/webkit/ide-webkit-page.c
+++ b/src/libide/webkit/ide-webkit-page.c
@@ -290,3 +290,45 @@ ide_webkit_page_focus_address (IdeWebkitPage *self)
 
   return gtk_widget_grab_focus (GTK_WIDGET (priv->url_bar));
 }
+
+void
+ide_webkit_page_go_back (IdeWebkitPage *self)
+{
+  IdeWebkitPagePrivate *priv = ide_webkit_page_get_instance_private (self);
+  WebKitBackForwardList *list;
+  WebKitBackForwardListItem *item;
+
+  IDE_ENTRY;
+
+  g_return_if_fail (IDE_IS_WEBKIT_PAGE (self));
+
+  list = webkit_web_view_get_back_forward_list (priv->web_view);
+  item = webkit_back_forward_list_get_back_item (list);
+
+  g_return_if_fail (item != NULL);
+
+  webkit_web_view_go_to_back_forward_list_item (priv->web_view, item);
+
+  IDE_EXIT;
+}
+
+void
+ide_webkit_page_go_forward (IdeWebkitPage *self)
+{
+  IdeWebkitPagePrivate *priv = ide_webkit_page_get_instance_private (self);
+  WebKitBackForwardList *list;
+  WebKitBackForwardListItem *item;
+
+  IDE_ENTRY;
+
+  g_return_if_fail (IDE_IS_WEBKIT_PAGE (self));
+
+  list = webkit_web_view_get_back_forward_list (priv->web_view);
+  item = webkit_back_forward_list_get_forward_item (list);
+
+  g_return_if_fail (item != NULL);
+
+  webkit_web_view_go_to_back_forward_list_item (priv->web_view, item);
+
+  IDE_EXIT;
+}
diff --git a/src/libide/webkit/ide-webkit-page.h b/src/libide/webkit/ide-webkit-page.h
index dff09275e..0e73c86ff 100644
--- a/src/libide/webkit/ide-webkit-page.h
+++ b/src/libide/webkit/ide-webkit-page.h
@@ -46,5 +46,9 @@ gboolean       ide_webkit_page_get_show_toolbar (IdeWebkitPage *self);
 IDE_AVAILABLE_IN_ALL
 void           ide_webkit_page_set_show_toolbar (IdeWebkitPage *self,
                                                  gboolean       show_toolbar);
+IDE_AVAILABLE_IN_ALL
+void           ide_webkit_page_go_back          (IdeWebkitPage *self);
+IDE_AVAILABLE_IN_ALL
+void           ide_webkit_page_go_forward       (IdeWebkitPage *self);
 
 G_END_DECLS