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gmx::CompositeHelpTopic< HelpText > Class Template Reference

#include <gromacs/onlinehelp/helptopic.h>

+ Inheritance diagram for gmx::CompositeHelpTopic< HelpText >:
+ Collaboration diagram for gmx::CompositeHelpTopic< HelpText >:

Description

template<class HelpText>
class gmx::CompositeHelpTopic< HelpText >

Template for simple implementation of AbstractCompositeHelpTopic.

Template Parameters
HelpTextStruct that defines the data for the topic.

Used similarly to SimpleHelpTopic. HelpText should satisfy the same criteria as for SimpleHelpTopic.

See Also
SimpleHelpTopic

Public Member Functions

virtual const char * name () const
 Returns the name of the topic. More...
 
virtual const char * title () const
 Returns a title for the topic. More...
 
virtual bool hasSubTopics () const
 Returns whether the topic has any subtopics.
 
virtual const IHelpTopicfindSubTopic (const char *name) const
 Finds a subtopic by name. More...
 
virtual void writeHelp (const HelpWriterContext &context) const
 Prints the help text for this topic. More...
 
void addSubTopic (HelpTopicPointer topic)
 Adds a given topic as a subtopic of this topic. More...
 
template<class Topic >
void registerSubTopic ()
 Registers a subtopic of a certain type to this topic. More...
 

Protected Member Functions

virtual std::string helpText () const
 Returns the help text for this topic. More...
 
bool writeSubTopicList (const HelpWriterContext &context, const std::string &title) const
 Writes the list of subtopics. More...
 

Member Function Documentation

void gmx::AbstractCompositeHelpTopic::addSubTopic ( HelpTopicPointer  topic)
inherited

Adds a given topic as a subtopic of this topic.

Parameters
topicTopis to add.
Exceptions
std::bad_allocif out of memory.

This topic takes ownership of the object.

See Also
registerSubTopic()
const IHelpTopic * gmx::AbstractCompositeHelpTopic::findSubTopic ( const char *  name) const
virtualinherited

Finds a subtopic by name.

Parameters
[in]nameName of subtopic to find.
Returns
Pointer to the found subtopic, or NULL if matching topic is not found.

Implements gmx::IHelpTopic.

template<class HelpText >
virtual std::string gmx::CompositeHelpTopic< HelpText >::helpText ( ) const
inlineprotectedvirtual

Returns the help text for this topic.

writeHelp() calls this method to obtain the actual text to format for the topic. Markup substitution etc. is done automatically by writeHelp().

Implements gmx::AbstractCompositeHelpTopic.

template<class HelpText >
virtual const char* gmx::CompositeHelpTopic< HelpText >::name ( ) const
inlinevirtual

Returns the name of the topic.

This should be a single lowercase word, used to identify the topic. It is not used for the root of the help topic tree.

Implements gmx::AbstractCompositeHelpTopic.

template<class Topic >
void gmx::AbstractCompositeHelpTopic::registerSubTopic ( )
inlineinherited

Registers a subtopic of a certain type to this topic.

Template Parameters
TopicType of topic to register.
Exceptions
std::bad_allocif out of memory.

Topic must be default-constructible and implement IHelpTopic.

This method is provided as a convenient alternative to addSubTopic() for cases where each topic is implemented by a different type (which is a common case outside unit tests).

template<class HelpText >
virtual const char* gmx::CompositeHelpTopic< HelpText >::title ( ) const
inlinevirtual

Returns a title for the topic.

May return NULL, in which case the topic is omitted from normal subtopic lists and no title is printed by the methods provided in helptopic.h.

Implements gmx::AbstractCompositeHelpTopic.

void gmx::AbstractCompositeHelpTopic::writeHelp ( const HelpWriterContext context) const
virtualinherited

Prints the help text for this topic.

Parameters
[in]contextContext object for writing the help.
Exceptions
std::bad_allocif out of memory.
FileIOErroron any I/O error.

Implements gmx::IHelpTopic.

bool gmx::AbstractCompositeHelpTopic::writeSubTopicList ( const HelpWriterContext context,
const std::string &  title 
) const
protectedinherited

Writes the list of subtopics.

Parameters
[in]contextContext for writing the help.
[in]titleTitle for the written list.
Returns
true if anything was printed.
Exceptions
std::bad_allocif out of memory.
FileIOErroron any I/O error.

Subtopics with empty titles are skipped from the list. If there would be no subtopics in the list, title is not printed either.

This method is provided for cases where helpText() does not provide the needed flexibility and the derived class needs to override writeHelp(). This method can then be called to print the same subtopic list that is printed by the default writeHelp() implementation.


The documentation for this class was generated from the following file: