Macromedia flex 2 Manual

Example: Creating style properties

189

Defining a style property

You define a style property for a component in the class definition.

To define a new style property:

1.

Insert the 

[Style]

 metadata tag that defines the style before the class definition. 

You insert the 

[Style]

 metadata tag before the class definition to define the MXML tag 

attribute for a style property. If you omit the 

[Style]

 metadata tag, the MXML compiler 

issues a syntax error when you try to set the property as an MXML tag attribute. 

The 

[Style]

 metadata tag has the following syntax: 

[Style(name="style_name"[,property="value",...])]

For more information, see 

.

2.

Override the 

styleChanged()

 method to detect changes to the property.

3.

Override 

updateDisplayList()

 method to incorporate the style into the component 

display.

4.

Define a static initializer to set the default value of the style property. 

For more information, see 

.