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TLookupValidator Class Reference

Compares the string typed by a user with a list of acceptable values. More...

#include <validate.h>

Inheritance diagram for TLookupValidator::

List of all members.

Public Methods
	TLookupValidator ()
virtual Boolean	isValid (const char *s)
virtual Boolean	lookup (const char *s)
Static Public Methods
TStreamable*	build ()
Static Public Attributes
const char* const	name
Protected Methods
	TLookupValidator (StreamableInit)

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Detailed Description

A lookup validator compares the string typed by a user with a list of acceptable values. TLookupValidator is an abstract validator type from which you can derive useful lookup validators. You will never create an instance of TLookupValidator.

When you create a lookup validator type, you need to specify a list of valid items and override the lookup() method to return True only if the user input matches an item in that list. One example of a working descendant of TLookupValidator is TStringLookupValidator.

Definition at line 752 of file validate.h.

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Constructor & Destructor Documentation

TLookupValidator::TLookupValidator ( ) [inline]

Undocumented. Definition at line 758 of file validate.h.

TLookupValidator::TLookupValidator ( StreamableInit ) [protected]

Each streamable class needs a "builder" to allocate the correct memory for its objects together with the initialized virtual table pointers. This is achieved by calling this constructor with an argument of type StreamableInit.

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Member Function Documentation

TStreamable * TLookupValidator::build ( ) [static]

Called to create an object in certain stream-reading situations. Reimplemented from TValidator. Reimplemented in TStringLookupValidator.

Boolean TLookupValidator::isValid ( const char * s ) [virtual]

Calls lookup() to find the string `s' in the list of valid input items. Returns True if lookup() returns True, meaning lookup() found `s' in its list; otherwise returns False. Reimplemented from TValidator.

Boolean TLookupValidator::lookup ( const char * s ) [virtual]

Searches for the string `s' in the list of valid entries and returns True if it finds `s'; otherwise returns False. TLookupValidator's lookup() is an abstract method that always returns False. Descendant lookup validator types must override lookup() to perform a search based on the actual list of acceptable items. Reimplemented in TStringLookupValidator.

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Member Data Documentation

const char *const TLookupValidator::name [static]

Undocumented. Reimplemented from TValidator. Reimplemented in TStringLookupValidator. Definition at line 781 of file validate.h.

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

• validate.h

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