#pragma region CPL License
/*
Nuclex Native Framework
Copyright (C) 2002-2013 Nuclex Development Labs

This library is free software; you can redistribute it and/or
modify it under the terms of the IBM Common Public License as
published by the IBM Corporation; either version 1.0 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
IBM Common Public License for more details.

You should have received a copy of the IBM Common Public
License along with this library
*/
#pragma endregion // CPL License

// If the library is compiled as a DLL, this ensures symbols are exported
#define NUCLEX_GRAPHICS_SOURCE 1

#include "Nuclex/Graphics/Rasterization/Options.h"

#include <cassert>

namespace Nuclex { namespace Graphics { namespace Rasterization {

  // ------------------------------------------------------------------------------------------- //

  Options::Observer *Options::GetObserver(const void *owner) const {
    return this->observers.Get(owner);
  }

  // ------------------------------------------------------------------------------------------- //

  void Options::AttachObserver(const void *owner, Observer *observer) {
    using namespace std;

    bool wasUnique = this->observers.AttachUnique(owner, observer);

    // Observer management should be accurate and error-free!
    assert(wasUnique && "Only one observer can be attached per owner");
    wasUnique; // avoid unreferenced parameter warning
  }

  // ------------------------------------------------------------------------------------------- //

  void Options::DetachObserver(const void *owner) {
    using namespace std;

    bool wasAttached = this->observers.Detach(owner);

    // Observer management should be accurate and error-free!
    assert(wasAttached && "Attempted to detach an observer that was not attached");
    wasAttached; // avoid unreferenced parameter warning
  }

  // ------------------------------------------------------------------------------------------- //

  void Options::OnDestroying() {
    std::vector<Observer *> copy = this->observers.Copy();
    for(std::size_t index = 0; index < copy.size(); ++index) {
      copy[index]->Destroying();
    }
  }

  // ------------------------------------------------------------------------------------------- //

  void Options::OnChanged() {
    std::vector<Observer *> copy = this->observers.Copy();
    for(std::size_t index = 0; index < copy.size(); ++index) {
      copy[index]->Changed();
    }
  }

  // ------------------------------------------------------------------------------------------- //

}}} // namespace Nuclex::Graphics::Rasterization