Wire Components"
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'''Example to wire components in a ViewModel''' | '''Example to wire components in a ViewModel''' | ||
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public class SearchAutowireVM{ | public class SearchAutowireVM{ | ||
Revision as of 10:05, 28 May 2012
Although the design principle of MVVM pattern is that ViewModel should not have any reference to UI components, ZK still provides two ways to retrieve UI components in a ViewModel. We don't suggest this usage because it loses the ViewModel an important advantage: loosely coupling with View. Please evaluate trade-off before using it.
One way is passing components as parameters in command binding which we have talked before. Another is to wire components by Selectors.wireComponents() . This way enables you to wire components with @Wire like you do in a SelectorComposer.
Example to wire components in a ViewModel
public class SearchAutowireVM{
//UI component
@Wire("#msgPopup")
Popup popup;
@Wire("#msg")
Label msg;
@Init
public void init(@ContextParam(ContextType.VIEW) Component view){
Selectors.wireComponents(view, this, false);
}
}
- One of Selectors.wireComponents() 's parameters is Root View Component which can be retrieved by @ContextParam
Version History
| Version | Date | Content |
|---|---|---|
| 6.0.0 | February 2012 | The MVVM was introduced. |