safeapplication.hh

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// Copyright (c) 2015-2018, LAAS-CNRS
// Authors: Joseph Mirabel (joseph.mirabel@laas.fr)
//
// This file is part of gepetto-viewer.
// gepetto-viewer is free software: you can redistribute it
// and/or modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation, either version
// 3 of the License, or (at your option) any later version.
//
// gepetto-viewer 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
// General Lesser Public License for more details. You should have
// received a copy of the GNU Lesser General Public License along with
// gepetto-viewer. If not, see <http://www.gnu.org/licenses/>.
 
#ifndef GEPETTO_GUI_SAFEAPPLICATION_HH
#define GEPETTO_GUI_SAFEAPPLICATION_HH
 
#include <gepetto/gui/fwd.hh>
// This include must be include before any other Qt include for GLDEBUGPROC
#include <assert.h>
 
#include <QApplication>
 
namespace gepetto {
namespace gui {
class SlotExceptionCatch {
 public:
  SlotExceptionCatch() : child_(NULL) {}
 
  virtual bool safeNotify(QApplication* app, QObject* receiver, QEvent* e) = 0;
 
  void addAsLeaf(SlotExceptionCatch* child) {
    if (child_ == NULL)
      child_ = child;
    else
      child_->addAsLeaf(child);
  }
 
 protected:
  bool impl_notify(QApplication* app, QObject* receiver, QEvent* e) {
    if (child_ == NULL)
      return app->QApplication::notify(receiver, e);
    else
      return child_->safeNotify(app, receiver, e);
  }
 
  SlotExceptionCatch* child_;
};
 
class SafeApplication : public QApplication, public SlotExceptionCatch {
 public:
  explicit SafeApplication(int& argc, char** argv) : QApplication(argc, argv) {}
 
  bool notify(QObject* receiver, QEvent* e) {
    return impl_notify(this, receiver, e);
  }
 
 private:
  bool safeNotify(QApplication*, QObject*, QEvent*) {
    assert(false);
    return false;
  };
};
}  // namespace gui
}  // namespace gepetto
 
#endif  // GEPETTO_GUI_SAFEAPPLICATION_HH