[gnome-builder/wip/gtk4-port: 1383/1774] plugins/html-preview: port to IdeHtmlGenerator

[Christian Hergert <chergert src gnome org>]

commit a964c305553bddb5754941f93c32d925d5e8bef9
Author: Christian Hergert <chergert redhat com>
Date:   Mon Jun 6 20:42:55 2022 -0700

    plugins/html-preview: port to IdeHtmlGenerator

 src/plugins/html-preview/gbp-html-preview-workspace-addin.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/src/plugins/html-preview/gbp-html-preview-workspace-addin.c 
b/src/plugins/html-preview/gbp-html-preview-workspace-addin.c
index aa753110e..2cd2b095f 100644
--- a/src/plugins/html-preview/gbp-html-preview-workspace-addin.c
+++ b/src/plugins/html-preview/gbp-html-preview-workspace-addin.c
@@ -214,6 +214,7 @@ static void
 live_preview_action (GbpHtmlPreviewWorkspaceAddin *self,
                      GVariant                     *params)
 {
+  g_autoptr(IdeHtmlGenerator) generator = NULL;
   g_autoptr(IdePanelPosition) position = NULL;
   g_autoptr(IdeBuffer) buffer = NULL;
   IdeWebkitPage *page;
@@ -227,7 +228,8 @@ live_preview_action (GbpHtmlPreviewWorkspaceAddin *self,
   g_assert (IDE_IS_EDITOR_PAGE (self->editor_page));
 
   buffer = g_signal_group_dup_target (self->buffer_signals);
-  page = ide_webkit_page_new_for_buffer (GTK_TEXT_BUFFER (buffer), NULL, NULL, NULL);
+  generator = ide_html_generator_new_for_buffer (GTK_TEXT_BUFFER (buffer));
+  page = ide_webkit_page_new_for_generator (generator);
   position = ide_page_get_position (IDE_PAGE (self->editor_page));
 
   if (!ide_panel_position_get_column (position, &column))