Кнопка для цитирования по выделению для Nasha-Life

nasha-life-quote.js

function getPost(node) {
    while (node.className != 'alt2' && node.className != 'alt1') node = node.parentElement;
    return node;
}

function getCite(noauthor) {
    let sel = window.getSelection()
    let post = getPost(sel.anchorNode).children[0]
    let name = ((post.children.length == 0) ? post : post.children[1]).innerText
    let content = sel.getRangeAt(0).cloneContents()
    let text = ""
    let traverse = (node) => {
        console.log(node)
        if (!node.children || node.children.length == 0) {
            text += node.textContent
            return
        }

        Array.from(node.childNodes).forEach(child => {
            let tag = null
            let attrs = ''
            let unary = false
            switch (child.tagName) {
                case "BR":
                    return
                case "B":
                    tag = 'b'
                    break
                case "I":
                    tag = 'i'
                    break
                case "U":
                    tag = 'u'
                    break
                case "S":
                    tag = 's'
                    break
                case "CODE":
                    tag = 'code'
                    break
                case "FONT":
                    if (child.getAttribute("color") != null) {
                        tag = 'color'
                        attrs = '=' + child.getAttribute("color")
                    } else if (child.getAttribute("size") != null) {
                        tag = 'size'
                        attrs = '=' + child.getAttribute("size")
                    }
                    break
                case 'A':
                    tag = 'url'
                    attrs = '=' + child.href
                    break
                case 'OL':
                    tag = 'list'
                    attrs = '=' + child.getAttribute("type")
                    break
                case 'LI':
                    tag = '*'
                    unary = true
                    break
            }
            if (tag != null) text += '[' + tag + attrs + ']'
            traverse(child)
            if (!unary && tag != null) text += '[/' + tag + ']'
        })
    }
    traverse(content)
    if (noauthor) return "[quote]" + text + "[/quote]"
    return "[quote][i][color=orange]Оригинальное сообщение от " + name + "[/color][/i]\n\n" + text + "[/quote]"
}

function makeCite(noauthor) {
    let text = document.querySelector("textarea#message")
    let before = text.value.substr(0, text.selectionStart)
    let after = text.value.substr(text.selectionEnd)
    if (!before.endsWith('\n')) before += '\n'
    if (!after.startsWith('\n')) after = '\n' + after
    text.value = before + getCite(noauthor).trim() + after
}

let tr = document.createElement('tr')
tr.appendChild(document.createElement('td'))
let td = document.createElement('td')
let but = document.createElement('span')
but.innerText = 'Цитировать выделение'
but.setAttribute('style', 'border: 1px yellow solid; padding: .25em .5ch; margin: .5em .5ch; cursor: pointer;')
but.onmousedown = (e) => { if (e.button == 0) makeCite(false); }
let but2 = document.createElement('span')
but2.innerText = 'Цитировать выделение без автора'
but2.setAttribute('style', 'border: 1px yellow solid; padding: .25em .5ch; margin: .5em .5ch; cursor: pointer;')
but2.onmousedown = (e) => { if (e.button == 0) makeCite(true); }
td.appendChild(but)
td.appendChild(but2)
tr.appendChild(td)
document.querySelector('form[name=vbform] tbody').appendChild(tr)