Comments on: Dynamic Cell Sizes

By: juliuss

juliuss — Tue, 08 Mar 2011 11:05:55 +0000

hello, i’m a student in holland
we have to make the game 4 in a row within javafx
could anyone help me?

thnx

By: lello

lello — Wed, 01 Sep 2010 14:37:26 +0000

Hi, wonderful example.
In your example the cell expand but the size of the label is always the same. It would be interesting to implement a ListView made with TextBox which can expands or contracts (i.e. showing a different number of lines).
Would that be possible?

By: Fabrice Bouye

Fabrice Bouye — Mon, 03 May 2010 04:44:44 +0000

Yes, I experience the same issue : scrolling the list or changing/updating its content tend to move the expanded cell around.

Probably a side effect of the cell API architecture and re-use of the same cells.

An alternative solution / quick fix might be to store the expanded state in the cell.item itself?

By: JavaFX links of the week, May 2 // JavaFX News, Demos and Insight // FX Experience

Sun, 02 May 2010 23:37:29 +0000

[...] to ListView in 1.3, in particular the introduction of cells. The first post discusses the support for dynamically variable row sizes, and the second post dives into how to create [...]

By: lapogunevas

lapogunevas — Sun, 02 May 2010 12:40:57 +0000

the second one.

I didn’t change anything except for moving ‘ExpandablePane’ into its class and calling the ListView part from main.

By: lapogunevas

lapogunevas — Sun, 02 May 2010 12:40:05 +0000

the second one.

I didn’t change anything except for moving ‘ExpandablePane’ into its class and calling the ListView part from main.

By: Richard Bair

Richard Bair — Fri, 30 Apr 2010 18:47:06 +0000

Which version of the code, first or second? I might have a bug in my example (I didn’t notice this issue but can see if I can reproduce it)

By: lapogunevas

lapogunevas — Thu, 29 Apr 2010 10:39:00 +0000

Great example! Its really a beautiful implementation that you guys provided with cellfactory.

But there is an issue with this (I couldn’t find the reason). If I expand one of the rows and scroll down using the scroll button of mouse, there are several other nodes which are in expanded state.

Initially it used to follow a pattern where only multiples were showing up but after multiple runs I found it to be random.

Can you please explain why this would happen?

Thanks,

By: Steve Sobczak

Steve Sobczak — Wed, 28 Apr 2010 14:06:39 +0000

Richard, your sample animated ListCell is great! Today I’m going to merge your concept with one I fleshed out yesterday, which I’ll go ahead and share here as a 1st iteration draft. Figuring out the proper technique for the mandatory binding is quite tricky given the current API docs. I love it, though! A powerful new feature you all created in this cell factory:-)

def cell: ListCell = ListCell {
layoutInfo: LayoutInfo{height:16}
node: bind if (cell.empty) {
Label {text: “”}
} else {
HBox {
nodeVPos:VPos.CENTER
spacing:3
content: [
Rectangle {width:15 height:8
fill: bind {colorObjSequence[cell.index]}},
Label {text:bind “{cell.item}”}]
}
}
}
Note: the parent list for this factory needs to be provided a sequence of presentable color names in the same order as the colorObjSequence.

By: Dean Iverson

Dean Iverson — Tue, 27 Apr 2010 18:59:51 +0000

That gets me every time, too. I always try to use a comma the first time I write it.