I_CmsLazyOpenHandler (OpenCms GWT Components API, version 17.0)

Type Parameters:

I - the specific lazy tree item implementation

All Superinterfaces:

com.google.gwt.event.shared.EventHandler, com.google.gwt.event.logical.shared.OpenHandler<I>

All Known Implementing Classes:

A_CmsDeepLazyOpenHandler, A_CmsLazyOpenHandler, CmsSitemapView.TreeOpenHandler
```
public interface I_CmsLazyOpenHandler<I extends CmsLazyTreeItem>
extends com.google.gwt.event.logical.shared.OpenHandler<I>
```
Lazy tree open handler interface.

Since:

8.0.0

See Also:

CmsLazyTreeItem

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`load(I target, java.lang.Runnable callback)`	Load the children of the given tree item.
`void`	`onOpen(com.google.gwt.event.logical.shared.OpenEvent<I> event)`

- Method Detail
  - load
```
void load(I target,
          java.lang.Runnable callback)
```
    Load the children of the given tree item.
    
    Parameters:
    
    target - the tree item to be loaded
    
    callback - the callback to execute after loading
  - onOpen
```
void onOpen(com.google.gwt.event.logical.shared.OpenEvent<I> event)
```
    Specified by:
    
    onOpen in interface com.google.gwt.event.logical.shared.OpenHandler<I extends CmsLazyTreeItem>
    
    See Also:
    
    OpenHandler.onOpen(com.google.gwt.event.logical.shared.OpenEvent)