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,
  77                     const HelpWriterContext  &context);
  78         ~HelpManager();
  79
  80         /*! \brief
  81          * Enters a subtopic with the given name under the active topic.
  82          *
  83          * \param[in] name  Subtopic name to enter.
  84          * \throws    std::bad_allod if out of memory.
  85          * \throws    InvalidInputError if topic with \p name is not found.
  86          */
  87         void enterTopic(const char *name);
  88         //! \copydoc enterTopic(const char *)
  89         void enterTopic(const std::string &name);
  90
  91         /*! \brief
  92          * Writes out the help for the currently active topic.
  93          *
  94          * \throws  std::bad_alloc if out of memory.
  95          * \throws  FileIOError on any I/O error.
  96          */
  97         void writeCurrentTopic() const;
  98
  99     private:
 100         class Impl;
 101
 102         PrivateImplPointer<Impl> impl_;
 103 };
 104
 105 } // namespace gmx
 106
 107 #endif