@init"
From Documentation
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=Syntax= | =Syntax= | ||
| − | <tt> @init(</tt> ''[EvaluateOnce EL-expression]'' <tt>) </tt> | + | <tt> @init(</tt> ''[EvaluateOnce EL-expression], [arbitraryKey]=[EL-expression] '' <tt>) </tt> |
= Description = | = Description = | ||
Revision as of 07:25, 3 January 2013
Syntax
@init( [EvaluateOnce EL-expression], [arbitraryKey]=[EL-expression] )
Description
Target Attribute: any
Purpose: Initialize an attribute's value and no reload during user interaction.
The EL expression in this annotation is only evaluated once when binder parses it. When you use it in "viewModel" attribute, binder will try to resolve the EL expression as a class and create an instance of it.
In "form" attribute, the result of evaluating the EL expression should be a Form object.
For other attributes, binder initializes their value with EL evaluation result.
Example
Usage example in viewModel attribute
<window apply="org.zkoss.bind.BindComposer" viewModel="@id('vm') @init('foo.ChildrenMenuVM')" >
</window>
Usage example in form attribute'
<vbox form="@id('fx') @init(vm.myForm) @load(vm.person) @save(vm.person, before='save')">
</vbox>
Version History
| Version | Date | Content |
|---|---|---|
| 6.0.0 | February 2012 | The MVVM was introduced. |