private void updateStyleValuesForRename(String oldName, String newName) {
        Values<Array<StyleData>> values = jsonData.getClassStyleMap().values();
        for (Array<StyleData> styles : values) {
            for (StyleData style : styles) {
                for (StyleProperty styleProperty : style.properties.values()) {
                    if (Drawable.class.isAssignableFrom(styleProperty.type)) {
                        if (styleProperty.value != null && styleProperty.value.equals(oldName)) {
                            styleProperty.value = newName;
                        }
                    }
                }
            }
        }
    }
Recreates the drawables array only including visible drawables.
core/src/com/ray3k/skincomposer/dialog/DialogDrawables.java