Hi, I've been having a very odd problem using the Tree control with a HierarchicicalCollectionView as the dataProvider. I've been to the Adobe Forums and #flex on irc.freenode.org looking for help and so far I've come up empty. I was told on IRC that Flexcoders is the right place to look for help :)
The problem is very simple, but somewhat difficult to describe. For reasons I'm still a little hazy on, the root node of the tree is displayed along side (on the same level) as its first-level children. All nodes that have children are correctly marked as expandable with the disclosure icon. Clicking said icon will cause the next level of the hierarchy to be displayed, which also suffers from the same problem: it will display all 2nd-level children AND their children on the 2nd level. I believe this problem stems from the way the Tree control iterates over the collection -- it uses ICollectionView.createCursor() instead of using the dataDescriptor property of the Tree control to do that operation (which the docs imply it does). After much frustration and dead ends, I discovered that this bug only manifests when the nodes in the HierarchicalCollectionView are marked as "open" using openNode(). If the nodes are closed, it works as expected. This is very unfortunate for my application, as I'm creating an app that displays the organization structure of a company. The control I use for drawing the chart requires all the nodes in the tree to be "open" in the dataProvider, but the Tree control that I'd like to use to provide quick navigation around the organization seems to require just the opposite. My questions are simple: why does this happen? Is it really a bug? Should I report it? (probably, if it is a bug...) Has anyone ever see this before, and if so, how did they deal with it? Thank you very much for any help you can provide. You can find my original post on the Adobe Flex forums (along with a simple reproduction recipe for the problem) here: http://www.adobe.com/cfusion/webforums/forum/messageview.cfm?forumid=60&catid=585&threadid=1366770&enterthread=y
