This helper class prints a collection of options and chose a user defined option. More...

#include <OptionSelector.h>

Public Member Functions
	OptionSelector ()

	~OptionSelector ()

void	AddItem (std::string name, T item)
	The given name and item will be added to the collection. More...

bool	SelectOption (T *result)
	Prints a collection of options and chose a user defined one. More...

Public Attributes
bool	ClearScreenAlways

std::string	Heading

bool	ShowHeaderFooter

std::string	OptionSeperator

bool	RepeatInput

Private Attributes
std::vector< std::string >	_names

std::vector< T >	_items

Detailed Description

template<class T>
class CppSamples::Common::OptionSelector< T >

This helper class prints a collection of options and chose a user defined option.

Definition at line 18 of file OptionSelector.h.

Constructor & Destructor Documentation

template<class T >

CppSamples::Common::OptionSelector< T >::OptionSelector ( )

Definition at line 49 of file OptionSelector.h.

                                           {
             ClearScreenAlways = false;
             Heading = "";
             ShowHeaderFooter = false;
             OptionSeperator = "\n\t";
             RepeatInput = false;
         }

template<class T>

CppSamples::Common::OptionSelector< T >::~OptionSelector ( )

inline

Definition at line 21 of file OptionSelector.h.

21 { }

Member Function Documentation

template<class T >

void CppSamples::Common::OptionSelector< T >::AddItem	(	std::string	name,
		T	item
	)

The given name and item will be added to the collection.

Parameters

name	String value of an option to be displayed.
item	The item to be added to the collection.

Definition at line 63 of file OptionSelector.h.

                                                               {
             _names.push_back(name);
             _items.push_back(item);
         }

template<class T >

bool CppSamples::Common::OptionSelector< T >::SelectOption ( T * result )

Prints a collection of options and chose a user defined one.

Parameters

result The selected item will be assigned to this pointer.

Returns: True if user selects a valid option. False otherwise.

Definition at line 74 of file OptionSelector.h.

                                                       {
 
             bool isInvalidOption = false;
             while (true) {
                 if (ClearScreenAlways)
                     Utility::ClearScreen();
 
                 if (ShowHeaderFooter)
                     std::cout << "========================================================" << "\n\t";
                 std::cout << Heading;
                 if (ShowHeaderFooter)
                     std::cout << "\n" << "========================================================";
 
                 int index = 0;
                 int size = _names.size();
                 for (; index < size; index++)
                     std::cout << OptionSeperator << (index + 1) << ". " << _names[index];
 
                 if (ShowHeaderFooter)
                     std::cout << "\n========================================================";
 
                 if (isInvalidOption) {
                     std::cout << "\n" << "Invalid option!!!";
                     isInvalidOption = false;
                 }
 
                 std::cout << "\n" << "Select your option [1-" << index << "] : ";
                 int option = Utility::ReadInt();
                 if (option > 0 && option <= index) {
                     *result = _items[option - 1];
                     return true;
                 }
 
                 if (!RepeatInput)
                     break;
 
                 isInvalidOption = true;
             }
 
             return false;
         }