11-22-16-dropGist

11-22-16-dropGist.js

const subjectsModuleSelector = createSelector([
    state => state.app.subjectHash,
    state => state.subjectsModule.draggingId,
    state => state.subjectsModule.currentDropCandidateId
], (subjectHash, draggingId, currentDropCandidateId) => {
    let subjects;
    if (currentDropCandidateId){
        subjectHash = {...subjectHash};
        let dropTarget = subjectHash[currentDropCandidateId],
            draggingSubject = subjectHash[`${draggingId}_dragging`] = {...subjectHash[draggingId], candidateMove: true};

        draggingSubject.path = !dropTarget.path ? `,${dropTarget._id},` : dropTarget.path + `${dropTarget._id},`;
        subjects = stackAndGetTopLevelSubjects(subjectHash);
    } else {
        subjects = subjectsSelector(subjectHash).subjects;
    }

    return {
        subjects,
        draggingId,
        currentDropCandidateId
    };
});