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/*=========================================================================
Program: Visualization Toolkit
Module: vtkInformationKeyLookup.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
/**
* @class vtkInformationKeyLookup
* @brief Find vtkInformationKeys from name and
* location strings.
*/
#ifndef vtkInformationKeyLookup_h
#define vtkInformationKeyLookup_h
#include "vtkCommonCoreModule.h" // For export macro
#include "vtkObject.h"
#include <map> // For std::map
#include <string> // For std::string
#include <utility> // For std::pair
VTK_ABI_NAMESPACE_BEGIN
class vtkInformationKey;
class VTKCOMMONCORE_EXPORT vtkInformationKeyLookup : public vtkObject
{
public:
static vtkInformationKeyLookup* New();
vtkTypeMacro(vtkInformationKeyLookup, vtkObject);
/**
* Lists all known keys.
*/
void PrintSelf(ostream& os, vtkIndent indent) override;
/**
* Find an information key from name and location strings. For example,
* Find("GUI_HIDE", "vtkAbstractArray") returns vtkAbstractArray::GUI_HIDE.
* Note that this class only knows about keys in modules that are currently
* linked to the running executable.
*/
static vtkInformationKey* Find(const std::string& name, const std::string& location);
protected:
vtkInformationKeyLookup();
~vtkInformationKeyLookup() override;
friend class vtkInformationKey;
/**
* Add a key to the KeyMap. This is done automatically in the
* vtkInformationKey constructor.
*/
static void RegisterKey(
vtkInformationKey* key, const std::string& name, const std::string& location);
private:
vtkInformationKeyLookup(const vtkInformationKeyLookup&) = delete;
void operator=(const vtkInformationKeyLookup&) = delete;
typedef std::pair<std::string, std::string> Identifier; // Location, Name
typedef std::map<Identifier, vtkInformationKey*> KeyMap;
// Using a static function / variable here to ensure static initialization
// works as intended, since key objects are static, too.
static KeyMap& Keys();
};
VTK_ABI_NAMESPACE_END
#endif // vtkInformationKeyLookup_h
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