Yahoo! UI Library

element  2.8.1

Yahoo! UI Library > element > YAHOO.util.Attribute
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Class YAHOO.util.Attribute

Provides Attribute configurations.

Constructor

YAHOO.util.Attribute ( hash , The )
Parameters:
hash <Object> The intial Attribute.
The <YAHOO.util.AttributeProvider> owner of the Attribute instance.

Properties

_initialConfig - private Object

The attribute's initial configuration.

_written - private Boolean

Whether or not the attribute's value has been set.

getter - Function

The function to use when getting the attribute's value. The getter receives the new value as the first arg and the attribute name as the 2nd The return value of the getter will be used as the return from get().

method - Function

A function to call when setting the attribute's value. The method receives the new value as the first arg and the attribute name as the 2nd

name - String

The name of the attribute.

owner - YAHOO.util.AttributeProvider

The owner of the attribute.

readOnly - Boolean

Whether or not the attribute is read only.

setter - Function

The function to use when setting the attribute's value. The setter receives the new value as the first arg and the attribute name as the 2nd The return value of the setter replaces the value passed to set().

validator - Function

The validator to use when setting the attribute's value.

value - String

The value of the attribute.

writeOnce - Boolean

Whether or not the attribute can only be written once.

Methods

configure

void configure ( map , init )
Allows for configuring the Attribute's properties.
Parameters:
map <Object> A key-value map of Attribute properties.
init <Boolean> Whether or not this should become the initial config.

getValue

any getValue ( )
Retrieves the current value of the attribute.
Returns: any
The current value of the attribute.

refresh

Boolean refresh ( )
Resets the value to the current value. Useful when values may have gotten out of sync with actual properties.
Returns: Boolean
Whether or not the value was set.

resetConfig

void resetConfig ( )
Resets the attribute config to the initial config state.

resetValue

Boolean resetValue ( )
Resets the value to the initial config value.
Returns: Boolean
Whether or not the value was set.

setValue

Boolean setValue ( value , silent )
Sets the value of the attribute and fires beforeChange and change events.
Parameters:
value <Any> The value to apply to the attribute.
silent <Boolean> If true the change events will not be fired.
Returns: Boolean
Whether or not the value was set.
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