Data Binding"

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{{Deprecated | url=[http://books.zkoss.org/zk-mvvm-book/8.0/syntax/data_binding.html zk-mvvm-book/8.0/syntax/data_binding]|}}
  
  
 
In the following sections, we'll cover ZK Bind's annotations used on a ZUL. They are all used in '''component's attribute''' and have general format described in [[ZK_Developer%27s_Reference/Annotations/Annotate_in_ZUML| Annotate in ZUML]]:
 
In the following sections, we'll cover ZK Bind's annotations used on a ZUL. They are all used in '''component's attribute''' and have general format described in [[ZK_Developer%27s_Reference/Annotations/Annotate_in_ZUML| Annotate in ZUML]]:
  
'''@AnnotationName(''attr-name1=attr-value1, attr-name2=attr-value2'')'''
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'''@AnnotationName(''attr-value1, attr-name2=attr-value2'')'''
  
 
'''@AnnotationName(''attr-name1={attr-value1-1, attr-value1-2}, attr-name2=attr-value2'')'''
 
'''@AnnotationName(''attr-name1={attr-value1-1, attr-value1-2}, attr-name2=attr-value2'')'''
  
 
Basically, the syntax consists of an annotation name with comma-separated key-value pairs. The binder treats an annotation's attribute value as an EL expression, and sets an EL expression without a attribute name to default attribute name "value". All annotations must define default attribute's value.
 
Basically, the syntax consists of an annotation name with comma-separated key-value pairs. The binder treats an annotation's attribute value as an EL expression, and sets an EL expression without a attribute name to default attribute name "value". All annotations must define default attribute's value.
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For each ZK Bind supported annotation, the way a binder evaluates an EL expression is slightly different. Some annotation's EL expressions are evaluated only once like <tt>@id</tt> and <tt>@init</tt>. some annotations have reserved attribute names, "before" and "after", like <tt>@load</tt> and <tt>@save</tt>.
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: It could be any name, it's used as a key for parameter related Java annotation in a ViewModel.
 
: It could be any name, it's used as a key for parameter related Java annotation in a ViewModel.
  
 
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Revision as of 08:05, 28 May 2015

Stop.png This article is out of date, please refer to zk-mvvm-book/8.0/syntax/data_binding for more up to date information.


In the following sections, we'll cover ZK Bind's annotations used on a ZUL. They are all used in component's attribute and have general format described in Annotate in ZUML:

@AnnotationName(attr-value1, attr-name2=attr-value2)

@AnnotationName(attr-name1={attr-value1-1, attr-value1-2}, attr-name2=attr-value2)

Basically, the syntax consists of an annotation name with comma-separated key-value pairs. The binder treats an annotation's attribute value as an EL expression, and sets an EL expression without a attribute name to default attribute name "value". All annotations must define default attribute's value.

For each ZK Bind supported annotation, the way a binder evaluates an EL expression is slightly different. Some annotation's EL expressions are evaluated only once like @id and @init. some annotations have reserved attribute names, "before" and "after", like @load and @save.



Subsections:



Last Update : 2015/05/28

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