Component Properties

With component definitions, we could specify the initial values for the properties, attributes and annotations of a component.

Properties

Depending on the requirement, you could change the initial value of a property for a particular ZUML document, or for the whole application.

Notice the initial values are applicable only to the component instantiated by ZK Loaders. It has no effect if you instantiate it in pure Java (unless you invoke Component.applyProperties() after instantiating a component).

Page-wide Initialization

Suppose we want to assign normal to the border property (Window.setBorder(String)) of all windows in a ZUML document, then we could use the component directive as follows.

<?component name="window" extends="window" border="normal"?>
<window title="Border"/>

Application-wid Initialization

If you prefer to have the same initial value for all ZUML documents, you could specify it in a language addon. For example, we could prepare a file called WEB-INF/lang-addon.xml with the following content:

<language-addon>
	<component>
		<component-name>window</component-name>
		<extends>window</extends>
		<property>
			<property-name>border</property-name>
			<property-value>normal</property-value>
		</property>
	</component>
</language-addon>

Then, we could specify this file by adding the following content to WEB-INF/zk.xml:

	<language-config>
		<addon-uri>/WEB-INF/lang-addon.xml</addon-uri>
	</language-config>

For more information, please refer to ZK Configuration Reference.

Attributes

Like properties, you could change the initial value of an attribute for a particular ZUML document, or for the whole application.

Notice the initial values are applicable only to the component instantiated by ZK Loaders. It has no effect if you instantiate it in pure Java (unless you invoke Component.applyProperties() after instantiating a component).

Version History

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