Is it possible to drag and drop file in to specific row of tree grid?
I have file explorer like - https://demo.vaadin.com/sampler/#ui/grids-and-trees/tree-grid/file-system-data-provider , and I need to drag a file into a folder from file system.
Hi,
yes, it’s possible. Check vaadin.com/docs/framework/v8/advanced/advanced-dragndrop.html - there’s a subtopic called “drag and drop rows in TreeGrid”. You’ll need to study the contents of that Docs article to get an idea of how drag + drop works in Vaadin 8.1.
-Olli
I understand how to drag and drop rows within tree grid. But I need to drag a real text file from file system and add it to grid.
I can get the files in FileDropTarget, but the drop target is the whole grid. I need the specific row.
Is there a way to combine TreeGridDropEvent with FileDropEvent? My TreeGridDropEvent in not called.
My plan is - > Drop file → Create POJO based on that file → add file to grid
Ah, now I see what you’re getting at. I think you’ll need to create a custom Extension for that. You should be able to get by just with a a modified/inherited GridDropTarget.
-Olli
Hi,
I would like to the same thing (drop a file inside a row in a TreeGrid “file Explorer”).
Is there any new in Vaadin 8.2 (there is some new stuffs for drag and drop in 8.2 but there are almost no example or I didn’t find them) ?
I will try to do what you suggest but it’s not really easy to understand what to do 
Thanks,
Sorry to dig out this old post, but it seems that nothing changed : we still cannot drop files onto TreeGrid (or even onto a simple Tree)
Did anyone achieve something similar or have any tip ?
Regards
Sebastien