Function handleOneId

dash/dash-renderer/src/actions/dependencies.js:1317–1360

(id, outIdCallbacks, inIdCallbacks)

    }

    function handleOneId(id, outIdCallbacks, inIdCallbacks) {
        if (outIdCallbacks) {
            for (const property in outIdCallbacks) {
                const cb = getCallbackByOutput(graphs, paths, id, property);
                if (cb) {
                    // callbacks found in the layout by output should always run
                    // unless specifically requested not to.
                    // ie this is the initial call of this callback even if it's
                    // not the page initialization but just a new layout chunk
                    if (!cb.callback.prevent_initial_call) {
                        cb.initialCall = true;
                        addCallback(cb);
                    }
                }
            }
        }
        if (!outputsOnly && inIdCallbacks) {
            const maybeAddCallback = removedArrayInputsOnly
                ? addCallbackIfArray(stringifyId(id))
                : addCallback;
            let handleThisCallback = maybeAddCallback;
            if (chunkPath) {
                handleThisCallback = cb => {
                    if (
                        !all(
                            startsWith(chunkPath),
                            pluck('path', flatten(cb.getOutputs(paths)))
                        )
                    ) {
                        maybeAddCallback(cb);
                    }
                };
            }
            for (const property in inIdCallbacks) {
                getCallbacksByInput(
                    graphs,
                    paths,
                    id,
                    property,
                    INDIRECT
                ).forEach(handleThisCallback);
            }
        }
    }

    crawlLayout(layoutChunk, child => {
        const id = path(['props', 'id'], child);