Controller"

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The ''controller'' is a Java program that is used to glue UI (view) and Data (model) together.
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For a simple UI, there is no need of controller. For example, the data of a <javadoc>org.zkoss.zul.Listbox</javadoc> could be abstracted by implementing <javadoc type="interface">org.zkoss.zul.ListModel</javadoc>.
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For typical database access, the glue logic (i.e., control) can be handled by a generic feature called [[ZK Developer's Reference/Data Binding|Data Binding]]. In other words, the read and write operations can be handled automatically by a generic Data Binding, and you don't need to write the glue logic at all.
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In this section we will discuss how to implement a custom controller,; also known as a composer.
  
 
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=Custom Controller=
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A custom controller is also know as a composer (in ZK).
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To implement a custom controller, you could extend from <javadoc>org.zkoss.zk.ui.util.GenericForwardComposer</javadoc>, or implement <javadoc type="interface">org.zkoss.zk.ui.util.Composer</javadoc> from scratch. Then, specify it in the element it wants to handle in a ZUML document.
  
 
=Version History=
 
=Version History=

Revision as of 07:51, 11 November 2010

The controller is a Java program that is used to glue UI (view) and Data (model) together.

For a simple UI, there is no need of controller. For example, the data of a Listbox could be abstracted by implementing ListModel.

For typical database access, the glue logic (i.e., control) can be handled by a generic feature called Data Binding. In other words, the read and write operations can be handled automatically by a generic Data Binding, and you don't need to write the glue logic at all.

In this section we will discuss how to implement a custom controller,; also known as a composer.



Custom Controller

A custom controller is also know as a composer (in ZK).

To implement a custom controller, you could extend from GenericForwardComposer, or implement Composer from scratch. Then, specify it in the element it wants to handle in a ZUML document.

Version History

Last Update : 2010/11/11

Version Date Content
     


Last Update : 2010/11/11


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