[gnome-builder/wip/gtk4-port] libide/editor: add compatibility helper

[Christian Hergert <chergert src gnome org>]

commit 4fca20f10d23c15285cb7242aa7fa49c1f6fde69
Author: Christian Hergert <chergert redhat com>
Date:   Thu Apr 28 21:00:36 2022 -0700

    libide/editor: add compatibility helper

 src/libide/editor/ide-editor-page.c | 18 ++++++++++++++++++
 src/libide/editor/ide-editor-page.h |  2 ++
 2 files changed, 20 insertions(+)
---
diff --git a/src/libide/editor/ide-editor-page.c b/src/libide/editor/ide-editor-page.c
index 7dae8b0f7..433b2b7eb 100644
--- a/src/libide/editor/ide-editor-page.c
+++ b/src/libide/editor/ide-editor-page.c
@@ -476,6 +476,24 @@ ide_editor_page_get_buffer (IdeEditorPage *self)
   return self->buffer;
 }
 
+/**
+ * ide_editor_page_get_file:
+ * @self: a #IdeEditorPage
+ *
+ * Gets the file for the document.
+ *
+ * This is a convenience function around ide_buffer_get_file().
+ *
+ * Returns: (transfer none): a #GFile
+ */
+GFile *
+ide_editor_page_get_file (IdeEditorPage *self)
+{
+  g_return_val_if_fail (IDE_IS_EDITOR_PAGE (self), NULL);
+
+  return ide_buffer_get_file (self->buffer);
+}
+
 static void
 ide_editor_page_save_cb (GObject      *object,
                          GAsyncResult *result,
diff --git a/src/libide/editor/ide-editor-page.h b/src/libide/editor/ide-editor-page.h
index 8722b616e..d49786292 100644
--- a/src/libide/editor/ide-editor-page.h
+++ b/src/libide/editor/ide-editor-page.h
@@ -43,6 +43,8 @@ IdeBuffer     *ide_editor_page_get_buffer             (IdeEditorPage        *sel
 IDE_AVAILABLE_IN_ALL
 IdeSourceView *ide_editor_page_get_view               (IdeEditorPage        *self);
 IDE_AVAILABLE_IN_ALL
+GFile         *ide_editor_page_get_file               (IdeEditorPage        *self);
+IDE_AVAILABLE_IN_ALL
 IdeGutter     *ide_editor_page_get_gutter             (IdeEditorPage        *self);
 IDE_AVAILABLE_IN_ALL
 void           ide_editor_page_set_gutter             (IdeEditorPage        *self,