Function addCallbackIfArray

dash/dash-renderer/src/actions/dependencies.js:1294–1315

(idStr)

    }

    function addCallbackIfArray(idStr) {
        return cb =>
            cb.getInputs(paths).some(ini => {
                if (
                    Array.isArray(ini) &&
                    ini.some(inij => stringifyId(inij.id) === idStr)
                ) {
                    // This callback should trigger even with no changedProps,
                    // since the props that changed no longer exist.
                    // We're kind of abusing the `initialCall` flag here, it's
                    // more like a "final call" for the removed inputs, but
                    // this case is not subject to `prevent_initial_call`.
                    if (flatten(cb.getOutputs(newPaths)).length) {
                        cb.initialCall = true;
                        cb.changedPropIds = {};
                        addCallback(cb);
                    }
                    return true;
                }
                return false;
            });
    }

    function handleOneId(id, outIdCallbacks, inIdCallbacks) {
        if (outIdCallbacks) {