[gtksourceview/gtksourcecompletion] Handle cursor movement in buffer while completing

[Jesse van den Kieboom <jessevdk src gnome org>]

commit be032aac075fcffbaa66fe3d926e6478c7949dad
Author: Jesse van den Kieboom <jessevdk gnome org>
Date:   Sat Sep 26 21:59:35 2009 +0200

    Handle cursor movement in buffer while completing
    
    If the cursor moves to another line, cancel the completion. If it moves
    on the same line, then repopulate the completion at the new insertion
    point.

 gtksourceview/gtksourcecompletion.c |   44 +++++++++++++++++++++++++++++++++++
 1 files changed, 44 insertions(+), 0 deletions(-)
---
diff --git a/gtksourceview/gtksourcecompletion.c b/gtksourceview/gtksourcecompletion.c
index f78db60..2f5b73b 100644
--- a/gtksourceview/gtksourcecompletion.c
+++ b/gtksourceview/gtksourcecompletion.c
@@ -93,6 +93,7 @@ enum
 	TEXT_VIEW_BUTTON_PRESS,
 	TEXT_BUFFER_DELETE_RANGE,
 	TEXT_BUFFER_INSERT_TEXT,
+	TEXT_BUFFER_MARK_SET,
 	LAST_EXTERNAL_SIGNAL
 };
 
@@ -1462,6 +1463,40 @@ buffer_insert_text_cb (GtkTextBuffer       *buffer,
 }
 
 static void
+buffer_mark_set_cb (GtkTextBuffer       *buffer,
+                    GtkTextIter         *iter,
+                    GtkTextMark         *mark,
+                    GtkSourceCompletion *completion)
+{
+	GtkTextIter it;
+	
+	if (mark != gtk_text_buffer_get_insert (buffer) ||
+	    !completion->priv->active_providers)
+	{
+		return;
+	}
+	
+	/* Check if the cursor is still on the completion line */
+	gtk_source_completion_context_get_iter (completion->priv->context,
+	                                        &it);
+	
+	if (gtk_text_iter_get_line (iter) != gtk_text_iter_get_line (&it))
+	{
+		gtk_source_completion_hide (completion);
+		return;
+	}
+	
+	/* Repopulate completion at the new iterator */
+	g_object_set (completion->priv->context,
+	              "iter", iter,
+                      NULL);
+
+	update_completion (completion,
+		           completion->priv->active_providers,
+		           completion->priv->context);
+}
+
+static void
 disconnect_view (GtkSourceCompletion *completion)
 {
 	GtkTextBuffer *buffer;
@@ -1482,6 +1517,9 @@ disconnect_view (GtkSourceCompletion *completion)
 
 	g_signal_handler_disconnect (buffer,
 	                             completion->priv->signals_ids[TEXT_BUFFER_INSERT_TEXT]);
+
+	g_signal_handler_disconnect (buffer,
+	                             completion->priv->signals_ids[TEXT_BUFFER_MARK_SET]);
 }
 
 static void
@@ -1520,6 +1558,12 @@ connect_view (GtkSourceCompletion *completion)
 					"insert-text",
 					G_CALLBACK (buffer_insert_text_cb),
 					completion);
+
+	completion->priv->signals_ids[TEXT_BUFFER_MARK_SET] =
+		g_signal_connect_after (buffer,
+					"mark-set",
+					G_CALLBACK (buffer_mark_set_cb),
+					completion);
 }
 
 static void