An input filter for a TextEditor that limits the length of text and/or the characters that it may contain. More...

Inheritance diagram for TextEditor::LengthAndCharacterRestriction:

Public Member Functions
	LengthAndCharacterRestriction (int maxNumChars, const String &allowedCharacters)
	Creates a filter that limits the length of text, and/or the characters that it can contain. More...

String	filterNewText (TextEditor &, const String &) override
	This method is called whenever text is entered into the editor. More...

Public Member Functions inherited from TextEditor::InputFilter
	InputFilter ()=default

virtual	~InputFilter ()=default

Detailed Description

An input filter for a TextEditor that limits the length of text and/or the characters that it may contain.

Constructor & Destructor Documentation

TextEditor::LengthAndCharacterRestriction::LengthAndCharacterRestriction	(	int	maxNumChars,
		const String &	allowedCharacters
	)

Creates a filter that limits the length of text, and/or the characters that it can contain.

Parameters

maxNumChars	if this is > 0, it sets a maximum length limit; if <= 0, no limit is set
allowedCharacters	if this is non-empty, then only characters that occur in this string are allowed to be entered into the editor.

String TextEditor::LengthAndCharacterRestriction::filterNewText	(	TextEditor &	,
		const String &	newInput
	)

overridevirtual

This method is called whenever text is entered into the editor.

An implementation of this class should should check the input string, and return an edited version of it that should be used.

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