[gtksourceview] Add a change-case action signal

[Paolo Borelli <pborelli src gnome org>]

commit d5fcaa4b7b9cff4b1a665ed37c973d487eefade7
Author: Paolo Borelli <pborelli gnome org>
Date:   Thu Mar 5 09:30:26 2015 +0100

    Add a change-case action signal

 gtksourceview/gtksourceview.c |   40 ++++++++++++++++++++++++++++++++++++++++
 1 files changed, 40 insertions(+), 0 deletions(-)
---
diff --git a/gtksourceview/gtksourceview.c b/gtksourceview/gtksourceview.c
index bf03668..00eea89 100644
--- a/gtksourceview/gtksourceview.c
+++ b/gtksourceview/gtksourceview.c
@@ -135,6 +135,7 @@ enum
        SMART_HOME_END,
        MOVE_TO_MATCHING_BRACKET,
        CHANGE_NUMBER,
+       CHANGE_CASE,
        LAST_SIGNAL
 };
 
@@ -401,6 +402,26 @@ gtk_source_view_change_number (GtkSourceView *view,
 }
 
 static void
+gtk_source_view_change_case (GtkSourceView           *view,
+                            GtkSourceChangeCaseType  case_type)
+{
+       GtkSourceBuffer *buffer;
+       GtkTextIter start, end;
+
+       buffer = GTK_SOURCE_BUFFER (gtk_text_view_get_buffer (GTK_TEXT_VIEW (view)));
+
+       gtk_text_view_reset_im_context (GTK_TEXT_VIEW (view));
+
+       if (!gtk_text_buffer_get_selection_bounds (GTK_TEXT_BUFFER (buffer), &start, &end))
+       {
+               /* if no selection, change the current char */
+               gtk_text_iter_forward_char (&end);
+       }
+
+       gtk_source_buffer_change_case (buffer, case_type, &start, &end);
+}
+
+static void
 gtk_source_view_class_init (GtkSourceViewClass *klass)
 {
        GObjectClass *object_class;
@@ -785,6 +806,25 @@ gtk_source_view_class_init (GtkSourceViewClass *klass)
                                            1,
                                            G_TYPE_INT);
 
+       /**
+        * GtkSourceView::change-case:
+        * @view: the #GtkSourceView
+        * @case_type: the case to use
+        *
+        * Keybinding signal to change case of the text at the current cursor position.
+        *
+        * Since: 3.16
+        */
+       signals[CHANGE_CASE] =
+               g_signal_new_class_handler ("change-case",
+                                           G_TYPE_FROM_CLASS (klass),
+                                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
+                                           G_CALLBACK (gtk_source_view_change_case),
+                                           NULL, NULL, NULL,
+                                           G_TYPE_NONE,
+                                           1,
+                                           GTK_SOURCE_TYPE_CHANGE_CASE_TYPE);
+
        binding_set = gtk_binding_set_by_class (klass);
 
        gtk_binding_entry_add_signal (binding_set,