Tree of Signals instead of Store

[FritzSolms]

I am working on a modeling application which enables users to concurrently evolve a model tree through diagrams ad other mechanisms. This tree needs to be reactive and since performance is important, it should be fine-grained reactive. I can use stores but then I need to submit update requests through path statements starting at the root. Instead I want to have different views onto aspects of the model have handles to their respective reactive model tree elements in order to access them directly.

So the solution I am using is a Tree of signals for the various model element types. To illustrate this consider the simplified code for a simple tree where all nodes are of the same type:

export class TreeNode {
    constructor(propertyA: string) {
        [this.propertyA, this.setPropertyA] = createSignal(propertyA);
        [this.children, this.setChildren] = createSignal(new Set<TreeNode>);
    }
    propertyA:  () => string;
    setPropertyA: (newValue: string) => void;
    children: () => Set<TreeNode>;
    setChildren: (children: Set<TreeNode>) => void;
}

Any view element can now have a direct link to the appropriate tree node within and can update that node directly without having to navigate a text-syntax based path starting from the root. As I see it , the path based approach is both cumbersome and inefficient for deep trees.

The disadvantage of this approach is, however, that one have to construct such a signal tree.

More generally, a store provides fine-grained signal support to some object graph and one would like to be able to get direct access to signal-wrapped elements within that object graph without having to apply any update through a path query.

If you feel the above is wrong or have a better way of doing this, please let me know. I am still new to SolidJS and will, no doubt, benefit from any comments.

[atk]

For children, you could use ReactiveSet from our community-primitives, so you wouldn't need to use setChildren and create a new Set every time.

[FritzSolms]

Nice - thanks!