PersonalFolderCache.hpp

#ifndef PERSONALFOLDERCACHE_HPP
#define PERSONALFOLDERCACHE_HPP

#include "UIComponent.hpp"

#include <boost/expected/expected.hpp>

namespace Showcase
{
  class PersonalFolderCacheLoader;
  class PersonalFolderCache : public std::enable_shared_from_this<PersonalFolderCache>
  {
    DECLARE_SINGLETON(PersonalFolderCache);
  public:
    virtual ~PersonalFolderCache();

    static std::weak_ptr<PersonalFolderCache> weakInstance();

    void init();
    void cacheFolder(uint64_t code);
    void cacheFolder(uint64_t code, const QByteArray & folder);
    void removeCachedFolder(uint64_t code);

    boost::expected<MultiWidgets::WidgetPtr, QString> personalFolderWidget(uint64_t code);

  private:
    PersonalFolderCache();
    void createPlaceHolder(uint64_t code, const QByteArray & folder);
    void createComponent(uint64_t code);

    struct FolderData
    {
      UIComponentPtr uiComponent;
      ComponentPlaceholderPtr placeholder;
      MultiWidgets::WidgetPtr widget;
      QString folder;
    };

    std::map<uint64_t, FolderData> m_personalFolders;

    std::mutex m_folderMutex; // protects m_personalFolders

    std::unique_ptr<PersonalFolderCacheLoader> m_loader;
  };

  typedef std::shared_ptr<PersonalFolderCache> PersonalFolderCachePtr;
  typedef std::weak_ptr<PersonalFolderCache> PersonalFolderCacheWeakPtr;
}

#endif // PERSONALFOLDERCACHE_HPP