[gnome-builder] libide/sourceview: implement overwrite-braces

[Christian Hergert <chergert src gnome org>]

commit 9cdd84e27fd271869fa23eb1d114e24f55457e87
Author: Christian Hergert <chergert redhat com>
Date:   Mon Sep 5 23:05:52 2022 -0700

    libide/sourceview: implement overwrite-braces
    
    Much simpler version than before, but also doesn't work with Vim due to
    how wayland input methods are swalling everything.

 src/libide/sourceview/ide-source-view-private.h |  1 +
 src/libide/sourceview/ide-source-view.c         | 97 +++++++++++++++++++++++++
 src/libide/sourceview/ide-source-view.h         |  5 ++
 3 files changed, 103 insertions(+)
---
diff --git a/src/libide/sourceview/ide-source-view-private.h b/src/libide/sourceview/ide-source-view-private.h
index 8f9b8722f..a47ffaaa6 100644
--- a/src/libide/sourceview/ide-source-view-private.h
+++ b/src/libide/sourceview/ide-source-view-private.h
@@ -73,6 +73,7 @@ struct _IdeSourceView
   /* Bitfield values go here */
   guint highlight_current_line : 1;
   guint insert_matching_brace : 1;
+  guint overwrite_braces : 1;
 };
 
 
diff --git a/src/libide/sourceview/ide-source-view.c b/src/libide/sourceview/ide-source-view.c
index d51be41fc..335090c09 100644
--- a/src/libide/sourceview/ide-source-view.c
+++ b/src/libide/sourceview/ide-source-view.c
@@ -35,6 +35,7 @@ enum {
   PROP_FONT_SCALE,
   PROP_INSERT_MATCHING_BRACE,
   PROP_LINE_HEIGHT,
+  PROP_OVERWRITE_BRACES,
   PROP_ZOOM_LEVEL,
   N_PROPS,
 
@@ -318,6 +319,64 @@ ide_source_view_key_pressed_cb (IdeSourceView         *self,
 
   buffer = GTK_TEXT_BUFFER (self->buffer);
 
+  if (self->overwrite_braces &&
+      !gtk_text_buffer_get_has_selection (buffer))
+    {
+      GtkTextIter iter;
+      gunichar ch;
+      gboolean overwrite;
+
+      gtk_text_buffer_get_selection_bounds (buffer, &iter, NULL);
+      ch = gtk_text_iter_get_char (&iter);
+
+      switch (keyval)
+        {
+        case GDK_KEY_quotedbl:
+          overwrite = ch == '"';
+          break;
+
+        case GDK_KEY_parenright:
+          overwrite = ch == ')';
+          break;
+
+        case GDK_KEY_apostrophe:
+          overwrite = ch == '\'';
+          break;
+
+        case GDK_KEY_greater:
+          overwrite = ch == '>';
+          break;
+
+        case GDK_KEY_bracketright:
+          overwrite = ch == ']';
+          break;
+
+        case GDK_KEY_braceright:
+          overwrite = ch == '}';
+          break;
+
+        default:
+          overwrite = FALSE;
+          break;
+        }
+
+      if (overwrite)
+        {
+          GtkTextIter next = iter;
+          g_autofree char *text = NULL;
+
+          gtk_text_iter_forward_char (&next);
+          gtk_text_buffer_begin_user_action (buffer);
+          gtk_text_buffer_select_range (buffer, &iter, &next);
+          text = gtk_text_iter_get_slice (&iter, &next);
+          gtk_text_buffer_delete (buffer, &iter, &next);
+          gtk_text_buffer_insert (buffer, &iter, text, -1);
+          gtk_text_buffer_end_user_action (buffer);
+
+          return TRUE;
+        }
+    }
+
   if (self->insert_matching_brace &&
       !gtk_text_buffer_get_has_selection (buffer))
     {
@@ -1006,6 +1065,10 @@ ide_source_view_get_property (GObject    *object,
       g_value_set_double (value, self->line_height);
       break;
 
+    case PROP_OVERWRITE_BRACES:
+      g_value_set_boolean (value, ide_source_view_get_overwrite_braces (self));
+      break;
+
     case PROP_ZOOM_LEVEL:
       g_value_set_double (value, ide_source_view_get_zoom_level (self));
       break;
@@ -1047,6 +1110,10 @@ ide_source_view_set_property (GObject      *object,
       ide_source_view_set_line_height (self, g_value_get_double (value));
       break;
 
+    case PROP_OVERWRITE_BRACES:
+      ide_source_view_set_overwrite_braces (self, g_value_get_boolean (value));
+      break;
+
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
     }
@@ -1100,6 +1167,13 @@ ide_source_view_class_init (IdeSourceViewClass *klass)
                           FALSE,
                           (G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS));
 
+  properties [PROP_OVERWRITE_BRACES] =
+    g_param_spec_boolean ("overwrite-braces",
+                          "Overwrite Braces",
+                          "Overwrite a matching brace/bracket/quotation/parenthesis",
+                          FALSE,
+                          (G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS));
+
   properties [PROP_ZOOM_LEVEL] =
     g_param_spec_double ("zoom-level",
                          "Zoom Level",
@@ -1590,3 +1664,26 @@ ide_source_view_set_insert_matching_brace (IdeSourceView *self,
       g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_INSERT_MATCHING_BRACE]);
     }
 }
+
+gboolean
+ide_source_view_get_overwrite_braces (IdeSourceView *self)
+{
+  g_return_val_if_fail (IDE_IS_SOURCE_VIEW (self), FALSE);
+
+  return self->overwrite_braces;
+}
+
+void
+ide_source_view_set_overwrite_braces (IdeSourceView *self,
+                                      gboolean       overwrite_braces)
+{
+  g_return_if_fail (IDE_IS_SOURCE_VIEW (self));
+
+  overwrite_braces = !!overwrite_braces;
+
+  if (overwrite_braces != self->overwrite_braces)
+    {
+      self->overwrite_braces = overwrite_braces;
+      g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_OVERWRITE_BRACES]);
+    }
+}
diff --git a/src/libide/sourceview/ide-source-view.h b/src/libide/sourceview/ide-source-view.h
index 85f3a7417..a1ab5342c 100644
--- a/src/libide/sourceview/ide-source-view.h
+++ b/src/libide/sourceview/ide-source-view.h
@@ -83,5 +83,10 @@ gboolean                    ide_source_view_get_insert_matching_brace   (IdeSour
 IDE_AVAILABLE_IN_ALL
 void                        ide_source_view_set_insert_matching_brace   (IdeSourceView              *self,
                                                                          gboolean                    
insert_matching_brace);
+IDE_AVAILABLE_IN_ALL
+gboolean                    ide_source_view_get_overwrite_braces        (IdeSourceView              *self);
+IDE_AVAILABLE_IN_ALL
+void                        ide_source_view_set_overwrite_braces        (IdeSourceView              *self,
+                                                                         gboolean                    
overwrite_braces);
 
 G_END_DECLS