Add EditorUndoRedoManager singleton
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@ -221,7 +221,7 @@ void HistoryDock::_notification(int p_notification) {
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HistoryDock::HistoryDock() {
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set_name("History");
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ur_manager = EditorNode::get_undo_redo();
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ur_manager = EditorUndoRedoManager::get_singleton();
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ur_manager->connect("history_changed", callable_mp(this, &HistoryDock::on_history_changed));
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ur_manager->connect("version_changed", callable_mp(this, &HistoryDock::on_version_changed));
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