AccessibilityValueInterface Class Reference

An abstract interface representing the value of an accessibility element. More...

#include <juce_AccessibilityValueInterface.h>

Inheritance diagram for AccessibilityValueInterface:

Classes
class	AccessibleValueRange
	Represents the range of this value, if supported. More...

Public Member Functions
virtual	~AccessibilityValueInterface ()=default
	Destructor.
virtual bool	isReadOnly () const =0
	Returns true if the value is read-only and cannot be modified by an accessibility client.
virtual double	getCurrentValue () const =0
	Returns the current value as a double.
virtual String	getCurrentValueAsString () const =0
	Returns the current value as a String.
virtual void	setValue (double newValue)=0
	Sets the current value to a new double value.
virtual void	setValueAsString (const String &newValue)=0
	Sets the current value to a new String value.
virtual AccessibleValueRange	getRange () const =0
	If this is a ranged value, this should return a valid AccessibleValueRange object representing the supported numerical range.

Detailed Description

An abstract interface representing the value of an accessibility element.

Values should be used when information needs to be conveyed which cannot be represented by the accessibility element's label alone. For example, a gain slider with the label "Gain" needs to also provide a value for its position whereas a "Save" button does not.

This class allows for full control over the value text/numeric conversion, ranged, and read-only properties but in most cases you'll want to use one of the derived classes below which handle some of this for you.

See also

AccessibilityTextValueInterface, AccessibilityNumericValueInterface, AccessibilityRangedNumericValueInterface

Constructor & Destructor Documentation

~AccessibilityValueInterface()

virtual AccessibilityValueInterface::~AccessibilityValueInterface ( )

virtualdefault

Destructor.

Member Function Documentation

isReadOnly()

virtual bool AccessibilityValueInterface::isReadOnly ( ) const

pure virtual

Returns true if the value is read-only and cannot be modified by an accessibility client.

See also

setValue, setValueAsString

Implemented in AccessibilityTextValueInterface, AccessibilityNumericValueInterface, and AccessibilityRangedNumericValueInterface.

getCurrentValue()

virtual double AccessibilityValueInterface::getCurrentValue ( ) const

pure virtual

Returns the current value as a double.

Implemented in AccessibilityTextValueInterface, AccessibilityNumericValueInterface, and AccessibilityRangedNumericValueInterface.

getCurrentValueAsString()

virtual String AccessibilityValueInterface::getCurrentValueAsString ( ) const

pure virtual

Returns the current value as a String.

Implemented in AccessibilityNumericValueInterface, AccessibilityRangedNumericValueInterface, and AccessibilityTextValueInterface.

setValue()

virtual void AccessibilityValueInterface::setValue ( double newValue )

pure virtual

Sets the current value to a new double value.

Implemented in AccessibilityTextValueInterface, AccessibilityNumericValueInterface, and AccessibilityRangedNumericValueInterface.

setValueAsString()

virtual void AccessibilityValueInterface::setValueAsString ( const String & newValue )

pure virtual

Sets the current value to a new String value.

Implemented in AccessibilityNumericValueInterface, AccessibilityRangedNumericValueInterface, and AccessibilityTextValueInterface.

getRange()

virtual AccessibleValueRange AccessibilityValueInterface::getRange ( ) const

pure virtual

If this is a ranged value, this should return a valid AccessibleValueRange object representing the supported numerical range.

Implemented in AccessibilityTextValueInterface, AccessibilityNumericValueInterface, and AccessibilityRangedNumericValueInterface.

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

• juce_AccessibilityValueInterface.h