Is there a way to persuade people to answer questions here? Or even to suggest possibilities? Searching allows me to find lots of questions like this about CellTree, but I can't find any answers. Help? Someone?
Thank you. On Apr 2, 11:52 pm, tomInNewEngland <[email protected]> wrote: > Hi All: > > I have a CellTree and I want to use two different cells for the leaf > and branch nodes. The leaf nodes are all to have a checkbox and the > brances are not. Leaves and branches appear on the same levels. > > I constructed a CompositeCell out of a CheckboxCell and a homegrown > cell (based on AbstractCell<T>), and I put a test in the > CompositeCell.render() method, that looked something like this: > > if (cell instanceof CheckboxCell) { > if (value.isLeaf()) { > cell.render(context, hasCell.getValue(value), sb); > } > > } > > With this code, the checkbox cell wasn't rendered at all for the > branch nodes. This appeared to work at first, but selecting a branch > node would give me an error that seemed to be at the Javascript > level. It read: "(Typeerror) elem is null". None of my code was > identified in the stack trace, so I don't get what was wrong. > > Can someone suggest what that error might have meant, or better, > suggest the right way to go about designing a cell that's different > for leaf and branch nodes that might be siblings in the CellTree. > > Another question: when designing a cell to use, what is the right way > to test the values that will be displayed in that cell? Besides > including the checkbox or not, I'd like to vary the look based on > other parameters. > > Many thanks, > > -Tom -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
