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/*  Visualization Library                                                             */
/*  http://visualizationlibrary.org                                                   */
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#ifndef KeyValues_INCLUDE_ONCE
#define KeyValues_INCLUDE_ONCE

#include <vlCore/Object.hpp>
#include <vlCore/String.hpp>
#include <map>

namespace vl
{
  //! A set of key/value pairs usually used to associate generic information, tags, attributes etc. to another class.
  class VLCORE_EXPORT KeyValues: public Object
  {
    VL_INSTRUMENT_CLASS(vl::KeyValues, Object)

  public:
    KeyValues();

    bool has(const String& key) const { return mKeyValues.find(key) != mKeyValues.end(); }

    String value(const String& key) const;

    String& set(const String& key) { return mKeyValues[key]; }

    void erase(const String& key) { mKeyValues.erase(key); }

    void getKeys(std::vector<String>& keys) const;

    void clear() { mKeyValues.clear(); }

    const std::map<String,String>& keyValueMap() const { return mKeyValues; }

    std::map<String,String>& keyValueMap() { return mKeyValues; }

    void print();

  protected:
    std::map<String,String> mKeyValues;
  };
}

#endif