View"

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The view is the UI of an application. It totally depends on the application's requirements.
 
The view is the UI of an application. It totally depends on the application's requirements.
  
As described in [[ZK Developer's Reference/MVC/Model|the Model section]], many ZK components could operate based on models, such as <javadoc>org.zkoss.zul.Listbox</javadoc>. In additions, you could customize their visual representation by providing an implementation of so-called renderer. The renderer depends on the component. For example, the display of <javadoc>org.zkoss.zul.Listbox</javadoc> can be customized by an implementation of <javadoc type="interface">org.zkoss.zul.ListitemRenderer</javadoc>, and <javadoc>org.zkoss.zul.Grid</javadoc> by <javadoc type="interface">org.zkoss.zul.RowRenderer</javadoc><ref>The same model usually can be shared by components having the same ''logic model''. For example, <javadoc type="interface">org.zkoss.zul.ListMode</javadoc> can be used in both <javadoc>org.zkoss.zul.Grid</javadoc> and <javadoc>org.zkoss.zul.Listbox</javadoc>. However, a renderer is usually specific to a particular component.</ref>.
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As described in [[ZK Developer's Reference/MVC/Model|MVC/Model]], some ZK components support Model-driven rendering, such as <javadoc>org.zkoss.zul.Listbox</javadoc>. There are two approaches you can customize the rendering of each item in a model:
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* [[ZK Developer's Reference/MVC/View/Template|Template]]: you define a template which is a fragment of the ZUML document to define how to render each item. It's more readable and easy to use.
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* [[ZK Developer's Reference/MVC/View/Renderer|Renderer]]: you create a Java class that implements a specific interface to render each item. If you need to render items according to conditions in the runtime, this approach is suggested.
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Latest revision as of 02:03, 30 January 2024

The view is the UI of an application. It totally depends on the application's requirements.

As described in MVC/Model, some ZK components support Model-driven rendering, such as Listbox. There are two approaches you can customize the rendering of each item in a model:

  • Template: you define a template which is a fragment of the ZUML document to define how to render each item. It's more readable and easy to use.
  • Renderer: you create a Java class that implements a specific interface to render each item. If you need to render items according to conditions in the runtime, this approach is suggested.







Last Update : 2024/01/30

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