/****************************************************************************
 *   Copyright (c) 2018 Zheng Lei (realthunder) <realthunder.dev@gmail.com> *
 *                                                                          *
 *   This file is part of the FreeCAD CAx development system.               *
 *                                                                          *
 *   This library is free software; you can redistribute it and/or          *
 *   modify it under the terms of the GNU Library General Public            *
 *   License as published by the Free Software Foundation; either           *
 *   version 2 of the License, or (at your option) any later version.       *
 *                                                                          *
 *   This library  is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of         *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
 *   GNU Library General Public License for more details.                   *
 *                                                                          *
 *   You should have received a copy of the GNU Library General Public      *
 *   License along with this library; see the file COPYING.LIB. If not,     *
 *   write to the Free Software Foundation, Inc., 59 Temple Place,          *
 *   Suite 330, Boston, MA  02111-1307, USA                                 *
 *                                                                          *
 ****************************************************************************/


#include <App/Application.h>
#include "ViewParams.h"

using namespace Gui;

ViewParams::ViewParams()
{
    handle = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/View");
    handle->Attach(this);
#undef FC_VIEW_PARAM
#define FC_VIEW_PARAM(_name, _ctype, _type, _def) _name = handle->Get##_type(#_name, _def);

    FC_VIEW_PARAMS
}

ViewParams::~ViewParams() = default;

void ViewParams::OnChange(Base::Subject<const char*>&, const char* sReason)
{
    if (!sReason) {
        return;
    }
#undef FC_VIEW_PARAM
#define FC_VIEW_PARAM(_name, _ctype, _type, _def) \
    if (strcmp(sReason, #_name) == 0) { \
        _name = handle->Get##_type(#_name, _def); \
        return; \
    }
    FC_VIEW_PARAMS
}

ViewParams* ViewParams::instance()
{
    static ViewParams* inst;
    if (!inst) {
        inst = new ViewParams;
    }
    return inst;
}