MessageBox not appearing until work is done on grid

[nmb1106]

I'm having trouble getting any type of messagebox to appear. I have a tree grid that with this UI can contain hundreds of nodes. The current example I have is 888 total items in the grid. When the grid gets this large the collapse/expand methods can take a large amount of time during which the browser appears as it is hung.

I have placed a collapse button on my toolbar and in the selection method did this:

MessageBox mb = MessageBox.wait("XML Preview", "Collapsing tree", "Please wait...");
treeGrid.collapseAll();
mb.close();

The messagebox is never appearing at all...to see if it was appearing and closing i deleted the mb.close line and tried it again...the MessageBox doesn't appear until after all of the collapseAll work is done.

I thought maybe this is happening because the grid is being updated so it appears over the top of the mb. To make sure that wasn't the case I shrunk my grid window and see nothing appearing behind it.

Any help would be appreciated. I've tried this several ways..on the before collapse/collapse grid events..beforeselect/select button events..view ready.. No luck..

[sven]

The problem is that in your browser, everything is single threaded. You need to add some time between showing the MessageBox and collapsing your entries.

MessageBox mb = MessageBox.wait("XML Preview", "Collapsing tree", "Please wait...");
Scheduler.get().scheduleDeffered(new Scheduler.Command() {
...
treeGrid.collapseAll();
mb.close();
..
}

[nmb1106]

Thank you for the response, knew it was something like that.

Instead of the wait I'd like to do a progress bar but thats even worse..can't update the progress bar for the same exact problem..tried nesting another defer in there but didn't work ...If not this is good enough thanks a lot

[A.Rothe]

I would add your treeGrid code into an Events.Show listener, which you could add to the MessageBox.getDialog().

André