src/gromacs/onlinehelp/helpmanager.h

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  35 /*! \libinternal \file
  36  * \brief
  37  * Declares gmx::HelpManager.
  38  *
  39  * \author Teemu Murtola <teemu.murtola@gmail.com>
  40  * \inlibraryapi
  41  * \ingroup module_onlinehelp
  42  */
  43 #ifndef GMX_ONLINEHELP_HELPMANAGER_H
  44 #define GMX_ONLINEHELP_HELPMANAGER_H
  45
  46 #include <string>
  47
  48 #include "gromacs/utility/classhelpers.h"
  49
  50 namespace gmx
  51 {
  52
  53 class HelpWriterContext;
  54 class IHelpTopic;
  55
  56 /*! \libinternal \brief
  57  * Helper for providing interactive online help.
  58  *
  59  * \inlibraryapi
  60  * \ingroup module_onlinehelp
  61  */
  62 class HelpManager
  63 {
  64 public:
  65     /*! \brief
  66      * Creates a manager that uses a given root topic.
  67      *
  68      * \param[in] rootTopic  Help topic that can be accessed through this
  69      *      manager.
  70      * \param[in] context    Context object for writing the help.
  71      * \throws    std::bad_alloc if out of memory.
  72      *
  73      * The provided topic and context objects must remain valid for the
  74      * lifetime of this manager object.
  75      */
  76     HelpManager(const IHelpTopic& rootTopic, const HelpWriterContext& context);
  77     ~HelpManager();
  78
  79     /*! \brief
  80      * Enters a subtopic with the given name under the active topic.
  81      *
  82      * \param[in] name  Subtopic name to enter.
  83      * \throws    std::bad_allod if out of memory.
  84      * \throws    InvalidInputError if topic with \p name is not found.
  85      */
  86     void enterTopic(const char* name);
  87     //! \copydoc enterTopic(const char *)
  88     void enterTopic(const std::string& name);
  89
  90     /*! \brief
  91      * Writes out the help for the currently active topic.
  92      *
  93      * \throws  std::bad_alloc if out of memory.
  94      * \throws  FileIOError on any I/O error.
  95      */
  96     void writeCurrentTopic() const;
  97
  98 private:
  99     class Impl;
 100
 101     PrivateImplPointer<Impl> impl_;
 102 };
 103
 104 } // namespace gmx
 105
 106 #endif