Workflowy computable values

Compute things with sublists and display values on an item name.
Fra og med 18.08.2016. Se den nyeste version.
Dette script bør ikke installeres direkte. Det er et bibliotek, som andre scripts kan inkludere med metadirektivet // @require https://update.greasyfork.org/scripts/22313/142414/Workflowy%20computable%20values.js
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Wrap lines
    var parseSelector = window.Parser.parse

    window.funcs = []
    window.nodeCache = {}
    var observer

    // observe dom mutations to make it run every time an item is opened / closed
    function start () {
        GM_addStyle(`
.project .content {
  display: inline-block !important;
}

.project .result {
  display: inline;
  color: blue;
  margin-left: 10px;
}
        `)


        document.body.addEventListener('click', function (e) {
            if (e.target.id === 'expandButton') {
                let restrictTo = e.target.parentNode.parentNode.getAttribute('projectid')
                setTimeout(function () {
                    itemOpenedOrClosed(restrictTo)
                }, 1000)
            }
        })

        itemOpenedOrClosed()
    }

    function itemOpenedOrClosed (restrictTo) {
        for (let i = 0; i < funcs.length; i++) {
            let script = funcs[i]
            execScript(script, restrictTo)
        }
    }

    function execScript ({script, selector, id, color}, restrictTo) {
        let items = findItems(selector)
        for (let i = 0; i < items.length; i++) {
            let item = items[i]
            if (restrictTo && item.getAttribute('projectid') !== restrictTo) {
                continue
            }
            execForItem(item, script, id, color)
        }
    }

    function execForItem (item, fun, id, color) {
        var children = []
        let par = item.querySelector('.children')
        for (let p = 0; p < par.children.length; p++) {
            if (par.children[p].classList.contains('project')) {
                children.push(par.children[p])
            }
        }

        var args = []
        for (let i = 0; i < children.length; i++) {
            let child = children[i]
            arg = nodeToArg(child)
            args.push(arg)
        }

        var result = item.querySelector('.result.script-' + id)
        if (!result) {
            let content = item.querySelector('.name .content')
            result = document.createElement('span')
            result.className = 'result script-' + id
            result.title = id
            result.style.color = color
            content.parentNode.insertBefore(result, content.nextSibling)
        }
        let resultvalue = fun(args, nodeToArg(item))
        result.innerHTML = (resultvalue || '').toString()
    }

    function nodeToArg (node) {
        let name = node.querySelector('.name .content').innerText.trim()
        let note = node.querySelector('.notes').innerText.trim()

        var arg = {name, note}

        let results = node.querySelector('.name').querySelectorAll('.result')
        for (let r = 0; r < results.length; r++) {
            let result = results[r]
            arg[result.classList.item(1)] = result.innerText.trim()
        }

        return arg
    }

    function findItems (selector) {
        let parsed = parseSelector(selector)
        var items = null
        for (let l = 0; l < parsed.length; l++) {
            let layer = parsed[l]
            items = select(layer, items)
        }
        return items || []
    }

    function select (layer, base) {
        if (!base) {
            base = document.querySelectorAll('.mainTreeRoot')
        }

        let [connector, selector] = layer
        return getChildren(base, selector, connector === 'directchild')
    }

    function getChildren (base, selector, onlydirect=false) {
        var filter
        switch (selector.type) {
            case 'id':
                filter = node =>
                node.getAttribute('projectid') === selector.val ||
                    node.querySelector('.bullet').href.split('#/')[1] === selector.val
                break
            case 'regex':
                filter = node =>
                node.querySelector('.name .content').innerText.search(selector.val) !== -1
                break
            case 'name':
                filter = node =>
                node.querySelector('.name .content').innerText.trim() === selector.val
                break
            case 'any':
                filter = () => true
                break
            default:
                throw new Error('INVALID SELECTOR: ', selector)
        }

        var children = []
        for (let i = 0; i < base.length; i++) {
            if (onlydirect) {
                let par = base[i].querySelector('.children')
                for (let p = 0; p < par.children.length; p++) {
                    if (par.children[p].classList.contains('project') && par.children[p].classList.contains('open')) {
                        children.push(par.children[p])
                    }
                }
            } else {
                let all = base[i].querySelectorAll('.children > .project.open')
                for (let i = 0; i < all.length; i++) {
                    children.push(all[i])
                }
            }
        }

        return children.filter(filter)
    }

    function registerScript (s) {
        funcs.push(s)
    }

    function waitFor (selector, callback) {
        let res = document.querySelector(selector)
        if (res) return callback()

        setTimeout(() => {
            waitFor(selector, callback)
        }, 1000)
    }