[news.eclipse.platform.swt] Re: TreeViewer with lazy loading

[Stefan Zeiger <szeiger@xxxxxxxxxxxx>]

Thomas Larsson wrote:

> have a CheckStateListener that calls the 
> CheckBoxViewer.setSubTreeChecked() if the user checks a file.
> If the file tree is large and a top node is checked, there is a 
> considerable lag with an unresponsive gui. How does this correspond to 
> what you said?

setSubTreeChecked() implicitly creates the entire subtree. Instead you 
could get the sub-nodes which already exist on only check those. You'd 
also have to make sure that new nodes are created with the "checked" 
state of their parent. I don't know if there's an elegant solution to 
this problem. Maybe subclassing CheckboxTreeViewer would be an option.

--
Stefan Zeiger - Developer of Novocode Application Framework
Build SWT-based MVC GUIs via XML: http://www.novocode.com/naf/