2015-05-19 18:04 GMT+02:00 webwarrior <r...@webwarrior.ws>: > I want to make a tree using TreeModel that reacts to changes in underlying > data - when an item changes, tree node for that item should update its > state > (recompute its children, etc.). > > Rebuilding the whole tree is ok, as long as selections and > collapsed/expanded state of nodes are preserved. > > Using #updateTree however resets all these things. And there is no easy way > to save/load them either - #selectedItems/#selectedItems: work with > TreeNode > instances that get reset, and collapsed/expanded states of nodes are simply > unaccessible from TreeModel. > > I also tried subclassing TreeNodeModel. But I found no way to update > underlying UI widget. There is a huge mess involving TreeNodeModel, > MorphicTreeNodeAdapter, SpecTreeNodeModel, and MorphTreeNodeMorph. > > The only option left is to extract all needed information from > TreeNodeModel > hierarchy (preserving the tree structure) before update, and then try to > reapply it to newly created hierarchy. > > Or is there an easier way? > > Not that I know of. I tried to change PharoLauncher to reselect the current item if you rename or recreate an image. But I could not find a way :(
> > > -- > View this message in context: > http://forum.world.st/Spec-TreeModel-dynamic-contents-tp4827440.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > >
