mitk::Forms::DropdownQuestion Class Reference

A Question whose possible responses are represented by a combo box. More...

#include <mitkDropdownQuestion.h>

Inheritance diagram for mitk::Forms::DropdownQuestion:

Collaboration diagram for mitk::Forms::DropdownQuestion:

Public Member Functions
	~DropdownQuestion () override
std::string	GetType () const override
	Return the type of a question as string, e.g. "Multiple choice" or "Drop-down". More...
Question *	CreateAnother () const override
	Create a new instance of the derived question class type. More...
void	FromJSON (const nlohmann::ordered_json &j) override
	Deserialize from JSON. More...
void	ToJSON (nlohmann::ordered_json &j) const override
	Serialize to JSON. More...
virtual void	SetResponse (size_t i)
	Set one of the possible answer options as the single response. More...
Public Member Functions inherited from mitk::Forms::QuestionWithOptions
	~QuestionWithOptions () override
std::vector< std::string >	GetResponsesAsStrings () const override
	Return the question's response(s) as strings. More...
void	ClearResponses () override
	Clear the/all response(s). More...
bool	IsComplete () const override
	Check if a question is considered to be answered completely. More...
size_t	AddOption (const std::string &option)
	Add a non-exclusive option as possible answer to the question. More...
std::vector< std::string >	GetOptions () const
Public Member Functions inherited from mitk::Forms::Question
	Question ()
virtual	~Question ()
std::string	GetQuestionText () const
	Get the literal question. More...
void	SetQuestionText (const std::string &question)
	Set the literal question. More...
bool	IsRequired () const
	Check whether a response to this question is required to complete a form. More...
void	SetRequired (bool required=true)
	Set whether a resonse to this question is required to complete a form. More...
virtual std::string	GetRequiredText () const
	Get the text that should be displayed to clearly mark a question as required. More...
virtual bool	HasFileResponses () const
	Query whether the responses given to this question are file paths. More...
virtual std::vector< fs::path >	SubmitFileResponses (const fs::path &basePath) const
	Attach response files to submission. More...

Additional Inherited Members
Protected Member Functions inherited from mitk::Forms::QuestionWithOptions
void	AddResponse (size_t i)
	Add one of the possible answer options to the responses. More...
void	RemoveResponse (size_t i)
	Remove one of the already given responses. More...
virtual void	SetResponse (size_t i)
	Set one of the possible answer options as the single response. More...

Detailed Description

A Question whose possible responses are represented by a combo box.

The question can have a single response.

See also

MultipleChoiceQuestion, CheckboxesQuestion

Definition at line 26 of file mitkDropdownQuestion.h.

Constructor & Destructor Documentation

~DropdownQuestion()

mitk::Forms::DropdownQuestion::~DropdownQuestion ( )

override

Member Function Documentation

CreateAnother()

Question* mitk::Forms::DropdownQuestion::CreateAnother ( ) const

overridevirtual

Create a new instance of the derived question class type.

This method is mainly used by IQuestionFactory to create new instances from registered prototype instances based on a type string.

Question* RhetoricalQuestion::CreateAnother() const
{
  return new RhetoricalQuestion;
}

See also

GetType()

Implements mitk::Forms::Question.

FromJSON()

void mitk::Forms::DropdownQuestion::FromJSON ( const nlohmann::ordered_json &  j )

overridevirtual

Deserialize from JSON.

Polymorphism and the use of base class pointers make it necessary to implement serialization through member functions. Using the pure native approach of the "JSON for Modern C++" library via free functions would lead to partially serialized instances of derived classes.

The actual implementation can and should still be located in a corresponding from_json() free function but we also need the indirection through this member function.

void RhetoricalQuestion::FromJSON(const nlohmann::ordered_json& j)
{
  from_json(j, *this);
}

See also

from_json(const nlohmann::ordered_json& j, Question& q)

Implements mitk::Forms::Question.

GetType()

std::string mitk::Forms::DropdownQuestion::GetType ( ) const

overridevirtual

Return the type of a question as string, e.g. "Multiple choice" or "Drop-down".

This method is essential for the deserialization of questions into their correct type, resp. derived class. The type string is used by IQuestionFactory to look up a registered prototype instance of a certain type to create another instance of it.

The type string does not have to match the class name or follow any other convention except for it must be unique amongst all question types. Prefer natural language like in the examples above in case it is used in a user interface to display a question's type.

std::string RhetoricalQuestion::GetType() const
{
  return "Rhetorical";
}

See also

CreateAnother()

Implements mitk::Forms::Question.

SetResponse()

virtual void mitk::Forms::QuestionWithOptions::SetResponse

Set one of the possible answer options as the single response.

Note

This will remove any responses added by AddResponse().

ToJSON()

void mitk::Forms::DropdownQuestion::ToJSON ( nlohmann::ordered_json &  j ) const

overridevirtual

Serialize to JSON.

Polymorphism and the use of base class pointers make it necessary to implement serialization through member functions. Using the pure native approach of the "JSON for Modern C++" library via free functions would lead to partially serialized instances of derived classes.

The actual implementation can and should still be located in a corresponding to_json() free function but we also need the indirection through this member function.

void RhetoricalQuestion::ToJSON(nlohmann::ordered_json& j) const
{
  to_json(j, *this);
}

See also

to_json(nlohmann::ordered_json& j, const Question& q)

Implements mitk::Forms::Question.

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

• mitkDropdownQuestion.h