[Question] How to modify node data (labels, etc)

[Atlas16A]

I don't know if i'm just stupid or what but here goes.

I've been working on a project using the node graph and I needed to modify the labels of each node and was hoping to later add in my own data to make it more useful, however try as I might I cant seem to find a way to fully do so, I was able to gain access to the label itself through very ugly code self.g.node_mut(0.into()).unwrap().with_label("A".to_string()); However it leaves the type as Node<()>.

Im just wondering is it even possible right now to access and manipulate this data or do I need to implement it from scratch?

[Atlas16A]

After some digging and trying to understand everything, I made a set_label function that seems to work, however the usage of it was not very pretty, shown below the fn. pub fn set_label(&mut self, label: String) { self.label = label; } self.g.node_mut(0.into()).unwrap().set_label("A".to_string());

After some testing it did appear to stay apart of the node after using this, but may be something Ive missed.

[blitzarx1]

At the the moment there are 4 properties of the node you can change + payload. There is a working configurable example in this repo which changes labels and locations of the node. The method you used in your comment is already exists in the master.

[Atlas16A]

There's alot going on in that example so im not surprised i missed it but im not sure i fully get it either, so for sake of clarity ill check. It seems it uses event signal to send receive info in nodes but beyond that i kind of get lost. I see that payload is N so are you using the structs in events to give structure to the payload then setting the value? Is using event enum structure necessary for setting payload or only because its a sim graph? Would it be possible to have a more gutted down example, like one with a button that makes half the nodes change labels or something? Idk the parts necessary for the sim are throwing me off i guess.

Thanks

[blitzarx1]

Actually you don't need handling events just to change label. Event are for synchronization of the changes happened in graph with your app. Currently graph can change only:

• zoom and pan
• location of the node (if it was dragged)
• dragged status
• selected status.

As you see label is not in the list and you can change it yourself just modifying the node with .set_label method from your app.

But request for the separate example sounds reasonable and I am going to add it shortly. Sorry if at this state API can be a little bit messy and often changes, but we are still not stable and on the way to it. I will keep this thread and link pr with label changing example to it.

[blitzarx1]

Hey! I 've added simple example which demonstrates how you can change a node label. Have fun)