I have a tree panel and I have to fit it into a Viewport's region, the region is resizable.
The region contains an Iframe, the tree panel is created in this Iframe.
(In other words the region and tree panel are generated in two different HTML pages).
Using the "layout: 'fit'" attribute in the tree panel doesn't work properly, as the tree panel isn't fit once I resize the region.
Is it somehow possible?