How to prevent the selection of child nodes from another root node

[floriankuek]

Hi all,

I'm wondering if there's a simple way to prevent the selection of child nodes from root node B when I have child nodes selected on root Node A and vice versa. To give some context I have two sources where each represents a local filesystem. I want to prevent the user to be able to select child nodes from both filesystems at the same time. A user should only ever be able to select child nodes from one root node at a time.

I use the following options selectMode: "hier" and checkbox: true.

Thanks in advance and for your work on this project! It's an amazing project!

[mar10]

The structure looks something like this?

Drive C:\
    Folder 1
        Folder 1.1
    Folder 2
        Folder 2.1
Drive D:\
    Folder 3
        Folder 3.1

One way could be to implement beforeSelect and use

beforeSelect(e) {
    const selTopNode = e.node.getParentList()[0];
    for (const node of e.tree.root.children) {
        if (selTopNode !== node && node.isPartsel()) {
            return false;
        }
    }
},

[floriankuek]

Hi @mar10 ,

yes the structure looks exactly like that. I did try beforeSelect after I posted my question here but your version you posted above is much cleaner then what I ended up with. Thank you very much for the help/suggestion. And thank you for maintaining such a great project!