[gtksourceview/wip/chergert/snippets] wip integrating snippet signals

[Christian Hergert <chergert src gnome org>]

commit c499a62cb1dd766be84f0cf8a4340ffe6e1f953e
Author: Christian Hergert <chergert redhat com>
Date:   Tue Jan 21 14:15:25 2020 -0800

    wip integrating snippet signals

 gtksourceview/gtksourceview.c | 128 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 128 insertions(+)
---
diff --git a/gtksourceview/gtksourceview.c b/gtksourceview/gtksourceview.c
index 3c316fd7..fb0018ab 100644
--- a/gtksourceview/gtksourceview.c
+++ b/gtksourceview/gtksourceview.c
@@ -1611,6 +1611,116 @@ implicit_trailing_newline_changed_cb (GtkSourceBuffer *buffer,
        gtk_source_view_queue_draw (view);
 }
 
+static void
+buffer_insert_text_cb (GtkSourceBuffer *buffer,
+                       GtkTextIter     *location,
+                       gchar           *text,
+                       gint             len,
+                       GtkSourceView   *view)
+{
+       GtkSourceViewPrivate *priv = gtk_source_view_get_instance_private (view);
+       GtkSourceSnippet *snippet;
+
+       g_assert (GTK_SOURCE_IS_BUFFER (buffer));
+       g_assert (location != NULL);
+       g_assert (text != NULL);
+       g_assert (GTK_SOURCE_IS_VIEW (view));
+
+       snippet = g_queue_peek_head (&priv->snippets);
+
+       if (snippet != NULL)
+       {
+               gtk_text_buffer_begin_user_action (GTK_TEXT_BUFFER (buffer));
+               _gtk_source_snippet_before_insert_text (snippet,
+                                                       GTK_TEXT_BUFFER (buffer),
+                                                       location,
+                                                       text,
+                                                       len);
+       }
+}
+
+static void
+buffer_after_insert_text_cb (GtkSourceBuffer *buffer,
+                             GtkTextIter     *location,
+                             gchar           *text,
+                             gint             len,
+                             GtkSourceView   *view)
+{
+       GtkSourceViewPrivate *priv = gtk_source_view_get_instance_private (view);
+       GtkSourceSnippet *snippet;
+
+       g_assert (GTK_SOURCE_IS_BUFFER (buffer));
+       g_assert (location != NULL);
+       g_assert (text != NULL);
+       g_assert (GTK_SOURCE_IS_VIEW (view));
+
+       snippet = g_queue_peek_head (&priv->snippets);
+
+       if (snippet != NULL)
+       {
+               _gtk_source_snippet_after_insert_text (snippet,
+                                                      GTK_TEXT_BUFFER (buffer),
+                                                      location,
+                                                      text,
+                                                      len);
+               gtk_text_buffer_end_user_action (GTK_TEXT_BUFFER (buffer));
+       }
+}
+
+static void
+buffer_delete_range_cb (GtkSourceBuffer *buffer,
+                        GtkTextIter     *begin,
+                        GtkTextIter     *end,
+                        GtkSourceView   *view)
+{
+       GtkSourceViewPrivate *priv = gtk_source_view_get_instance_private (view);
+       GtkSourceSnippet *snippet;
+
+       g_assert (GTK_SOURCE_IS_BUFFER (buffer));
+       g_assert (begin != NULL);
+       g_assert (end != NULL);
+       g_assert (GTK_SOURCE_IS_VIEW (view));
+
+       snippet = g_queue_peek_head (&priv->snippets);
+
+       if (snippet != NULL)
+       {
+               //ide_source_view_block_handlers (self);
+               _gtk_source_snippet_before_delete_range (snippet,
+                                                        GTK_TEXT_BUFFER (buffer),
+                                                        begin,
+                                                        end);
+               //ide_source_view_unblock_handlers (self);
+       }
+}
+
+static void
+buffer_delete_range_after_cb (GtkSourceBuffer *buffer,
+                              GtkTextIter     *begin,
+                              GtkTextIter     *end,
+                              GtkSourceView   *view)
+{
+       GtkSourceViewPrivate *priv = gtk_source_view_get_instance_private (view);
+       GtkSourceSnippet *snippet;
+
+       g_assert (GTK_SOURCE_IS_BUFFER (buffer));
+       g_assert (begin != NULL);
+       g_assert (end != NULL);
+       g_assert (GTK_SOURCE_IS_VIEW (view));
+
+       snippet = g_queue_peek_head (&priv->snippets);
+
+       if (snippet != NULL)
+       {
+               //ide_source_view_block_handlers (self);
+               _gtk_source_snippet_after_delete_range (snippet,
+                                                       GTK_TEXT_BUFFER (buffer),
+                                                       begin,
+                                                       end);
+               //ide_source_view_unblock_handlers (self);
+       }
+}
+
 static void
 remove_source_buffer (GtkSourceView *view)
 {
@@ -1640,6 +1750,14 @@ remove_source_buffer (GtkSourceView *view)
                                                      implicit_trailing_newline_changed_cb,
                                                      view);
 
+               g_signal_handlers_disconnect_by_func (priv->source_buffer,
+                                                     buffer_insert_text_cb,
+                                                     view);
+
+               g_signal_handlers_disconnect_by_func (priv->source_buffer,
+                                                     buffer_after_insert_text_cb,
+                                                     view);
+
                buffer_internal = _gtk_source_buffer_internal_get_from_buffer (priv->source_buffer);
 
                g_signal_handlers_disconnect_by_func (buffer_internal,
@@ -1695,6 +1813,16 @@ set_source_buffer (GtkSourceView *view,
                                  G_CALLBACK (buffer_has_selection_changed_cb),
                                  view);
 
+               g_signal_connect (buffer,
+                                 "insert-text",
+                                 G_CALLBACK (buffer_insert_text_cb),
+                                 view);
+
+               g_signal_connect_after (buffer,
+                                       "insert-text",
+                                       G_CALLBACK (buffer_after_insert_text_cb),
+                                       view);
+
                buffer_internal = _gtk_source_buffer_internal_get_from_buffer (priv->source_buffer);
 
                g_signal_connect (buffer_internal,