[gnome-builder/wip/gtk4-port: 318/343] libide/editor: connect title and modified bit

[Christian Hergert <chergert src gnome org>]

commit cc29680e6106746d2c57a7d88b1aae18f9ad6f21
Author: Christian Hergert <chergert redhat com>
Date:   Sat Apr 2 03:56:39 2022 -0700

    libide/editor: connect title and modified bit

 src/libide/editor/ide-editor-page.c | 32 +++++++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)
---
diff --git a/src/libide/editor/ide-editor-page.c b/src/libide/editor/ide-editor-page.c
index 129f169db..4999113ad 100644
--- a/src/libide/editor/ide-editor-page.c
+++ b/src/libide/editor/ide-editor-page.c
@@ -35,15 +35,45 @@ G_DEFINE_TYPE (IdeEditorPage, ide_editor_page, IDE_TYPE_PAGE)
 
 static GParamSpec *properties [N_PROPS];
 
+static void
+ide_editor_page_modified_changed_cb (IdeEditorPage *self,
+                                     IdeBuffer     *buffer)
+{
+  IDE_ENTRY;
+
+  g_assert (IDE_IS_EDITOR_PAGE (self));
+  g_assert (IDE_IS_BUFFER (buffer));
+
+  panel_widget_set_modified (PANEL_WIDGET (self),
+                             gtk_text_buffer_get_modified (GTK_TEXT_BUFFER (buffer)));
+
+  IDE_EXIT;
+}
+
 static void
 ide_editor_page_set_buffer (IdeEditorPage *self,
                             IdeBuffer     *buffer)
 {
+  IDE_ENTRY;
+
   g_assert (IDE_IS_EDITOR_PAGE (self));
   g_assert (IDE_IS_BUFFER (buffer));
 
   if (g_set_object (&self->buffer, buffer))
-    gtk_text_view_set_buffer (GTK_TEXT_VIEW (self->view), GTK_TEXT_BUFFER (buffer));
+    {
+      gtk_text_view_set_buffer (GTK_TEXT_VIEW (self->view), GTK_TEXT_BUFFER (buffer));
+
+      g_signal_connect_object (buffer,
+                               "modified-changed",
+                               G_CALLBACK (ide_editor_page_modified_changed_cb),
+                               self,
+                               G_CONNECT_SWAPPED);
+
+      g_object_bind_property (buffer, "title", self, "title", G_BINDING_SYNC_CREATE);
+      ide_editor_page_modified_changed_cb (self, buffer);
+    }
+
+  IDE_EXIT;
 }
 
 static gboolean