@command"
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=Syntax= | =Syntax= | ||
| − | < | + | <code> @command(</code> ''[EL-expression], [arbitraryKey]=[EL-expression] '' <code>) </code> |
= Description = | = Description = | ||
Revision as of 14:13, 12 January 2022
This article is out of date, please refer to zk-mvvm-book/8.0/syntax/data_binding/command for more up to date information.
Syntax
@command( [EL-expression], [arbitraryKey]=[EL-expression] )
Description
Target Attribute: event attributes (e.g. onClick, onOK)
Purpose: Specify which command to execute when the event fires
You can pass arbitrary arguments in key-value pairs with comma separated.
- [arbitraryKey]=[EL-expression]
- It's key-value pairs basically. You can write multiple key-value pairs with different key names.
- An EL expression without key is set to a default key named "value" implicitly.
- Due to each annotation has different functions, some annotations may ignore key-value pair expression other than default key, e.g.@id.
- [arbitraryKey]
- It could be any name, it's used as a key for parameter related Java annotation in a ViewModel.
Example
<button label="Save" onClick="@command('saveOrder')" />
<button label="Delete" onClick="@command(empty vm.selected.id?'deleteOrder':'confirmDelete')" />
<button label="Index" onClick="@command('showIndex', index=10, keyword='myKeyword')"/>
Version History
| Version | Date | Content |
|---|---|---|
| 6.0.0 | February 2012 | The MVVM was introduced. |