bilibili-subtitle-to-text

一次性展示bilibili的cc字幕。适合需要快速阅读字幕的场景。

目前為 2024-07-25 提交的版本,檢視 最新版本

// ==UserScript==
// @name         bilibili-subtitle-to-text
// @namespace    http://tampermonkey.net/
// @version      0.31
// @description  一次性展示bilibili的cc字幕。适合需要快速阅读字幕的场景。
// @author       You
// @match        https://www.bilibili.com/video/*
// @icon         https://www.bilibili.com/favicon.ico
// @grant        GM_addStyle
// @grant        GM.getValue
// @grant        GM.setValue
// @require      https://lf3-cdn-tos.bytecdntp.com/cdn/expire-1-M/jquery/3.6.0/jquery.min.js
// @license      GNU GPLv3
// ==/UserScript==

// us for userscript
GM_addStyle(`
    .us-popup-reader {
    }
    
    .us-popup-reader::-webkit-scrollbar-track {
      -webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.3);
      background-color: #F5F5F5;
    }
    
    .us-popup-reader::-webkit-scrollbar {
      width: 6px;
        height: 6px;
      background-color: #F5F5F5;
    }
    
    .us-popup-reader::-webkit-scrollbar-thumb {
      background-color: darkgrey;
    }
    
    .us-lyric-line {
        display: flex;
    }
    .us-lyric-line span {
      margin-left: 0.75rem;
    }
    
    .us-lyric-line-time {
        flex: none;
        overflow: hidden;
        width:66px;
    }
    
    .us-lyric-line-content {
        white-space: nowrap;
    }
    
    .us-toolbar {
        position: absolute;
        top: 0;
        right: 48px;
        height: 32px;
        line-height: 32px;
        white-space: nowrap;
    }
    
    .us-toolbar a {
        margin-right: 8px;
    }
  
    .us-setting {}
    .us-setting form { 
      display: table;
      border-spacing: 10px;
    }
    .us-setting p { display: table-row; }
    .us-setting label { display: table-cell; }
    .us-setting input { display: table-cell; }
    .us-input-text {
      padding: 0 5px;
      border-radius: 5px;
    }
    .us-input-submit {
      margin-left: 10px;
      min-width: 3rem;
    }
  `)
  
// modify origin UI to fit new button
GM_addStyle(`
    .video-toolbar-container .video-toolbar-left .toolbar-left-item-wrap {
        margin-right: 2px!important;
    }
    .video-toolbar-container .video-toolbar-left .toolbar-left-item-wrap .video-toolbar-left-item {
        width: 85px!important;
    }
  `)
  
function fixNumber(n) {
  return (n).toLocaleString("en-US", { minimumIntegerDigits: 2, useGrouping: false })
}
  
function parseTime(t) {
  t = parseInt(t)
  return `${fixNumber(parseInt(t / 60))}:${fixNumber(t % 60)}`
}
  
const SettingType = Object.freeze({
  Text: Symbol("Text"),
  Submit: Symbol("Submit")
})
  
  
class Dialog {
  constructor() {
    this.dialogDiv = $(`
        <div id="ZulNs-dialog" class="ZulNs-dialog" style="min-width:400px; min-height:280px;">
          <div class="titlebar">Title</div>
          <button name="close">&#x2716</button>
          <div class="us-toolbar"></div>
          <div class="content">
            <div id="content"></div>
            <div class="us-setting">
              <form></form>
            </div>
          </div>
        </div>
      `)
    this._titleBar = this.dialogDiv.find(".titlebar")
    this.contentPane = this.dialogDiv.find("#content")
    this.settingPane = this.dialogDiv.find(".us-setting")
    this.settingForm = this.settingPane.find("form")
    this.settingPane.hide()
    this._toolbar = this.dialogDiv.find(".us-toolbar")
  }
  init() {
    this.dialogDiv.appendTo($("body"))
    this.dialogBox = new DialogBox("ZulNs-dialog", () => { })
  }
  show() {
    this.dialogBox.showDialog()
  }
  setTitle(text) {
    this._titleBar.html(text)
  }
  addToolbarEntry(text, cb) {
    let link = $(`<a>${text}</a>`)
    link.on("click", cb)
    this._toolbar.append(link)
    return link
  }
  addSettingEntry(name, type) {
    if (type === SettingType.Submit) {
      let submit = $(`<input type="submit" class="us-input-submit" value="${name}">`)
      this.settingForm.append(submit)
      return submit
    }
  
    let line = $(`<p><label for="${name}">${name}: </label></p>`)
    let input = null
    if (type === SettingType.Text) {
      input = $(`<input id="${name}" class="us-input-text" type="text">`)
    } else {
      console.error("Unknown SettingType: " + type)
      return
    }
    line.append(input)
    this.settingForm.append(line)
    return line
  }
  changeFontSize(font) {
    console.log(this.dialogDiv)
    console.log(font)
    this.dialogDiv.css({ fontSize: `${font}px` })
  }
}
  
(async function () {
  "use strict"
  
  async function request(url) {
    return await fetch(url, { credentials: "include" })
      .then(res => res.json())
      .then(data => {
        if (data.code != 0) {
          throw new Error(data.message)
        }
        return data
      })
  }
  
  async function get_bilibili_video_info(bvid) {
    return (await request(`https://api.bilibili.com/x/web-interface/view?bvid=${bvid}`)).data
  }
  
  async function get_bilibili_page_info(aid, cid) {
    return (await request(`https://api.bilibili.com/x/player/v2?aid=${aid}&cid=${cid}`)).data
  }
  
  let settings = null
  try {
    settings = JSON.parse(await GM.getValue("us-bst-settings"))
  } catch (err) {
    console.error(err)
    settings = {
      "font": 14,
      "music_filter_rate": 0.85
    }
  }
  
  let dialog = new Dialog()
  dialog.changeFontSize(settings.font)
  let video = null
  
  dialog.contentPane.addClass("us-popup-reader")
  let downloadGenerateLink = dialog.addToolbarEntry("下载字幕", () => { })
  let downloadLink = dialog.addToolbarEntry("下载字幕文本", () => { })
  let downloadJsonLink = dialog.addToolbarEntry("下载字幕Json", () => { })
  downloadGenerateLink.hide()
  downloadLink.hide()
  downloadJsonLink.hide()
  
  let fontSetting = dialog.addSettingEntry("字号", SettingType.Text)
  let musicFilterRateSetting = dialog.addSettingEntry("歌词过滤阈值", SettingType.Text)
  dialog.addSettingEntry("确定", SettingType.Submit)
  let cancel = dialog.addSettingEntry("取消", SettingType.Submit)
  dialog.addToolbarEntry("设置", () => {
    fontSetting.find("input").val(settings.font)
    musicFilterRateSetting.find("input").val(settings.music_filter_rate)
    dialog.settingPane.show()
    dialog.contentPane.hide()
  })
  cancel.on("click", () => {
    dialog.settingPane.hide()
    dialog.contentPane.show()
  })
  dialog.settingForm.on("submit", () => {
    settings.font = fontSetting.find("input").val()
    settings.music_filter_rate = musicFilterRateSetting.find("input").val()
    ;(async function() { 
      await GM.setValue("us-bst-settings", JSON.stringify(settings))
    })()
    dialog.changeFontSize(settings.font)
    dialog.settingPane.hide()
    dialog.contentPane.show()
    return false
  })
  
  
  let urlParameters = window.location.pathname.split("/")
  let bvid = urlParameters.pop()
  if (bvid == "") bvid = urlParameters.pop()
  
  // insert link
  let subtitleBtn = $(`
      <div class="video-toolbar-right-item">
          <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" fill="currentColor" class="video-note-icon video-toolbar-item-icon" viewBox="0 0 16 16">
              <path d="M3.708 7.755c0-1.111.488-1.753 1.319-1.753.681 0 1.138.47 1.186 1.107H7.36V7c-.052-1.186-1.024-2-2.342-2C3.414 5 2.5 6.05 2.5 7.751v.747c0 1.7.905 2.73 2.518 2.73 1.314 0 2.285-.792 2.342-1.939v-.114H6.213c-.048.615-.496 1.05-1.186 1.05-.84 0-1.319-.62-1.319-1.727v-.743zm6.14 0c0-1.111.488-1.753 1.318-1.753.682 0 1.139.47 1.187 1.107H13.5V7c-.053-1.186-1.024-2-2.342-2C9.554 5 8.64 6.05 8.64 7.751v.747c0 1.7.905 2.73 2.518 2.73 1.314 0 2.285-.792 2.342-1.939v-.114h-1.147c-.048.615-.497 1.05-1.187 1.05-.839 0-1.318-.62-1.318-1.727v-.743z"/>
              <path d="M14 3a1 1 0 0 1 1 1v8a1 1 0 0 1-1 1H2a1 1 0 0 1-1-1V4a1 1 0 0 1 1-1h12zM2 2a2 2 0 0 0-2 2v8a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V4a2 2 0 0 0-2-2H2z"/>
          </svg>
          字幕
      </div>`)
  
  setTimeout(() => {
    let handler = setInterval(() => {
      let toolbar = $("#arc_toolbar_report .video-toolbar-right .video-tool-more")
      if (toolbar.length != 0) {
        video = document.querySelector("video")
        dialog.init()
        toolbar.css("margin-right", "18px")
        subtitleBtn.insertBefore(toolbar)
        $(".arc_toolbar_report").css("justify-content", "initial")
        clearInterval(handler)
      }
    }, 500)
  }, 3000)
  
  async function useSubtitle(subtitle, filename_without_ext) {
    dialog.setTitle(subtitle.lan_doc)
    let data = await fetch(subtitle.subtitle_url.replace("http:", "https:")).then(res => res.json())
    // console.log(data)
  
    dialog.contentPane.html("")
    for (let line of data.body) {
      if (line.music && line.music > settings.music_filter_rate) {
        continue
      }
      let link = $(`<a class="us-lyric-line-time">${parseTime(line.from)}</a>`)
      link.on("click", () => {
        video.currentTime = line.from
      })
      let lineDiv = $("<div class=\"us-lyric-line\" />")
      lineDiv.append(link)
      lineDiv.append(`<span class="us-lyric-line-content">${line.content}</span></div>`)
      dialog.contentPane.append(lineDiv)
    }
  
    downloadGenerateLink.on("click", () => {
      let subtitleText = ""
      for (let line of data.body) {
        subtitleText += line.content + "\n"
      }
      downloadLink.attr("href", `data:plain/text;charset=utf-8,${encodeURIComponent(subtitleText)}`)
      downloadJsonLink.attr("href", `data:application/json;charset=utf-8,${encodeURIComponent(JSON.stringify(data.body))}`)
      downloadLink.attr("download", `${filename_without_ext}.txt`)
      downloadJsonLink.attr("download", `${filename_without_ext}.json`)
      downloadLink.show()
      downloadJsonLink.show()
      downloadGenerateLink.hide()
    })
    downloadGenerateLink.show()
  }
  
  async function getSubtitleList() {
    let cur_page = (new URLSearchParams(window.location.search)).get("p") - 1
    if (!cur_page || cur_page == -1) {
      cur_page = 0
    }
    try {
      let video_info = await get_bilibili_video_info(bvid)
      let page_info = await get_bilibili_page_info(video_info.aid, video_info.pages[cur_page].cid)
      const video_name = video_info.title
      const page_name = video_info.pages[cur_page].part
      let subtitles = page_info.subtitle.subtitles
      if (subtitles.length == 0) {
        dialog.contentPane.html("无字幕")
      } else {
        dialog.contentPane.html("")
        for (let subtitle of subtitles) {
          let link = $("<a>" + subtitle.lan_doc + "</a>")
          link.on("click", () => {
            useSubtitle(subtitle, `${video_name}-p${cur_page}-${page_name}`)
          })
          dialog.contentPane.append(link)
        }
      }
    } catch (e) {
      dialog.contentPane.html(`获取字幕信息失败<br />${e}`)
      console.error(e)
    }
  }
  
  // show popup and fetch information
  subtitleBtn.on("click", () => {
    // titlebar.html()
    dialog.setTitle("选择字幕")
    dialog.show()
    dialog.contentPane.html("正在加载字幕列表")
    getSubtitleList()
  })
})()
  
  
// https://github.com/ZulNs/Draggable-Resizable-Dialog/
// On MIT License
GM_addStyle(`
    .ZulNs-dialog {
      // display: none; /* not visible by default */
      font-family: Verdana, sans-serif;
      font-size: 14px;
      font-weight: 400;
      color: #555;
      background: #f6f6f6;
        box-shadow: 0 3px 25px 0 rgba(0,0,0,.3);
        border: 1px solid #e3e5e7; /* change allowed; Border to separate multipe dialog boxes */
      border-radius: 8px;
        margin: 0;
      position: fixed;
        z-index: 9999!important;
        height: 480px;
    }
    .ZulNs-dialog .titlebar {
      height: 32px; /* same as .ZulNs-dialog>button height */
      line-height: 32px; /* same as .ZulNs-dialog>button height */
      vertical-align: middle;
      padding: 0 8px 0 8px; /* change NOT allowed */
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      cursor: move;
    }
    .ZulNs-dialog .content {
      position: absolute;
      top: 48px; /* change allowed */
      left: 16px; /* change NOT allowed */
      overflow: auto;
    }
    .ZulNs-dialog .buttonpane:before {
      width: 100%;
      height: 0;
      border-bottom: 1px solid; /* change allowed */
      content: '';
      position: absolute;
      top: -16px; /* change allowed */
    }
    .ZulNs-dialog .buttonpane {
      width: 100%;
      position: absolute;
      bottom: 16px; /* change allowed */
      right: 16px; /* change NOT allowed */
      white-space: nowrap; /* keep buttons on one line */
    }
    .ZulNs-dialog .buttonset {
      float: right;
    }
    .ZulNs-dialog button {
      -webkit-transition: 0.25s;
      transition: 0.25s;
      color: #555;
        border: 0;
    }
    .ZulNs-dialog button::-moz-focus-inner {
      border: 0;
    }
    /* .ZulNs-dialog button.hover, */ /* Let's use standard hover */
    .ZulNs-dialog button:hover,
    .ZulNs-dialog button.active
    {
      cursor: pointer;
    }
    .ZulNs-dialog>button {
      width: 32px; /* change NOT allowed */
      height: 32px; /* same as .ZulNs-dialog .titlebar height */
      position: absolute;
      top: 0;
      right: 0;
      padding: 0;
      border: 0;
      font-size: 1.4em;
        background: #f6f6f6;
    }
    /* .ZulNs-dialog>button.hover, */
    .ZulNs-dialog>button:hover
    {
      background: lightgrey;
        border: 0;
    }
    .ZulNs-dialog>button.active {
      border: 0;
    }
    `)
  
/* eslint-disable */
  function DialogBox(id, callback) {
  
    var _minW = 100, // The exact value get's calculated
      _minH = 1, // The exact value get's calculated
      _resizePixel = 5,
      _hasEventListeners = !!window.addEventListener,
      _parent,
      _dialog,
      _dialogTitle,
      _dialogContent,
      _dialogButtonPane,
      _maxX, _maxY,
      _startX, _startY,
      _startW, _startH,
      _leftPos, _topPos,
      _isDrag = false,
      _isResize = false,
      _isButton = false,
      _isButtonHovered = false, // Let's use standard hover (see css)
      //_isClickEvent = true, // Showing several dialog boxes work better if I do not use this variable
      _resizeMode = "",
      _whichButton,
      _buttons,
      _tabBoundary,
      _callback, // Callback function which transfers the name of the selected button to the caller
      _zIndex, // Initial zIndex of this dialog box 
      _zIndexFlag = false, // Bring this dialog box to front 
      _setCursor, // Forward declaration to get access to this function in the closure
      _whichClick, // Forward declaration to get access to this function in the closure
      _setDialogContent, // Forward declaration to get access to this function in the closure
  
      _addEvent = function (elm, evt, callback) {
        if (elm == null || typeof (elm) == undefined)
          return
        if (_hasEventListeners)
          elm.addEventListener(evt, callback, false)
        else if (elm.attachEvent)
          elm.attachEvent("on" + evt, callback)
        else
          elm["on" + evt] = callback
      },
  
      _returnEvent = function (evt) {
        if (evt.stopPropagation)
          evt.stopPropagation()
        if (evt.preventDefault)
          evt.preventDefault()
        else {
          evt.returnValue = false
          return false
        }
      },
  
      // not used
      /*
      _returnTrueEvent = function(evt) {
          evt.returnValue = true;
          return true;
      },
      */
  
      // not used
      // Mybe we should be able to destroy a dialog box, too. 
      // In this case we should remove the event listeners from the dialog box but 
      // I do not know how to identfy which event listeners should be removed from the document.
      /*
      _removeEvent = function(elm, evt, callback) {
          if (elm == null || typeof(elm) == undefined)
              return;
          if (window.removeEventListener)
              elm.removeEventListener(evt, callback, false);
          else if (elm.detachEvent)
              elm.detachEvent('on' + evt, callback);
      },
      */
  
      _adjustFocus = function (evt) {
        evt = evt || window.event
        if (evt.target === _dialogTitle)
          _buttons[_buttons.length - 1].focus()
        else
          _buttons[0].focus()
        return _returnEvent(evt)
      },
  
      _onFocus = function (evt) {
        evt = evt || window.event
        evt.target.classList.add("focus")
        return _returnEvent(evt)
      },
  
      _onBlur = function (evt) {
        evt = evt || window.event
        evt.target.classList.remove("focus")
        return _returnEvent(evt)
      },
  
      _onClick = function (evt) {
        evt = evt || window.event
        //if (_isClickEvent)
        _whichClick(evt.target)
        //else
        //	_isClickEvent = true;
        return _returnEvent(evt)
      },
  
      _onMouseDown = function (evt) {
        evt = evt || window.event
        _zIndexFlag = true
        // mousedown might happen on any place of the dialog box, therefore 
        // we need to take care that this does not to mess up normal events 
        // on the content of the dialog box, i.e. to copy text
        if (!(evt.target === _dialog || evt.target === _dialogTitle || evt.target === _buttons[0]))
          return
        var rect = _getOffset(_dialog)
        _maxX = Math.max(
          document.documentElement["clientWidth"],
          document.body["scrollWidth"],
          document.documentElement["scrollWidth"],
          document.body["offsetWidth"],
          document.documentElement["offsetWidth"]
        )
        _maxY = Math.max(
          document.documentElement["clientHeight"],
          document.body["scrollHeight"],
          document.documentElement["scrollHeight"],
          document.body["offsetHeight"],
          document.documentElement["offsetHeight"]
        )
        if (rect.right > _maxX)
          _maxX = rect.right
        if (rect.bottom > _maxY)
          _maxY = rect.bottom
        _startX = evt.pageX
        _startY = evt.pageY
        _startW = _dialog.clientWidth
        _startH = _dialog.clientHeight
        _leftPos = rect.left
        _topPos = rect.top
        if (_isButtonHovered) {
          //_whichButton.classList.remove('hover');
          _whichButton.classList.remove("focus")
          _whichButton.classList.add("active")
          _isButtonHovered = false
          _isButton = true
        }
        else if (evt.target === _dialogTitle && _resizeMode == "") {
          _setCursor("move")
          _isDrag = true
        }
        else if (_resizeMode != "") {
          _isResize = true
        }
        var r = _dialog.getBoundingClientRect()
        return _returnEvent(evt)
      },
  
      _onMouseMove = function (evt) {
        evt = evt || window.event
        // mousemove might run out of the dialog box during drag or resize, therefore we need to 
        // attach the event to the whole document, but we need to take care that this  
        // does not to mess up normal events outside of the dialog box.
        if (!(evt.target === _dialog || evt.target === _dialogTitle || evt.target === _buttons[0]) && !_isDrag && _resizeMode == "")
          return
        if (_isDrag) {
          var dx = _startX - evt.pageX,
            dy = _startY - evt.pageY,
            left = _leftPos - dx,
            top = _topPos - dy,
            scrollL = Math.max(document.body.scrollLeft, document.documentElement.scrollLeft),
            scrollT = Math.max(document.body.scrollTop, document.documentElement.scrollTop)
          if (dx < 0) {
            if (left + _startW > _maxX)
              left = _maxX - _startW
          }
          if (dx > 0) {
            if (left < 0)
              left = 0
          }
          if (dy < 0) {
            if (top + _startH > _maxY)
              top = _maxY - _startH
          }
          if (dy > 0) {
            if (top < 0)
              top = 0
          }
          _dialog.style.left = left + "px"
          _dialog.style.top = top + "px"
          if (evt.clientY > window.innerHeight - 32)
            scrollT += 32
          else if (evt.clientY < 32)
            scrollT -= 32
          if (evt.clientX > window.innerWidth - 32)
            scrollL += 32
          else if (evt.clientX < 32)
            scrollL -= 32
          if (top + _startH == _maxY)
            scrollT = _maxY - window.innerHeight + 20
          else if (top == 0)
            scrollT = 0
          if (left + _startW == _maxX)
            scrollL = _maxX - window.innerWidth + 20
          else if (left == 0)
            scrollL = 0
          if (_startH > window.innerHeight) {
            if (evt.clientY < window.innerHeight / 2)
              scrollT = 0
            else
              scrollT = _maxY - window.innerHeight + 20
          }
          if (_startW > window.innerWidth) {
            if (evt.clientX < window.innerWidth / 2)
              scrollL = 0
            else
              scrollL = _maxX - window.innerWidth + 20
          }
          window.scrollTo(scrollL, scrollT)
        }
        else if (_isResize) {
          var dw, dh, w, h
          if (_resizeMode == "w") {
            dw = _startX - evt.pageX
            if (_leftPos - dw < 0)
              dw = _leftPos
            w = _startW + dw
            if (w < _minW) {
              w = _minW
              dw = w - _startW
            }
            _dialog.style.width = w + "px"
            _dialog.style.left = (_leftPos - dw) + "px"
          }
          else if (_resizeMode == "e") {
            dw = evt.pageX - _startX
            if (_leftPos + _startW + dw > _maxX)
              dw = _maxX - _leftPos - _startW
            w = _startW + dw
            if (w < _minW)
              w = _minW
            _dialog.style.width = w + "px"
          }
          else if (_resizeMode == "n") {
            dh = _startY - evt.pageY
            if (_topPos - dh < 0)
              dh = _topPos
            h = _startH + dh
            if (h < _minH) {
              h = _minH
              dh = h - _startH
            }
            _dialog.style.height = h + "px"
            _dialog.style.top = (_topPos - dh) + "px"
          }
          else if (_resizeMode == "s") {
            dh = evt.pageY - _startY
            if (_topPos + _startH + dh > _maxY)
              dh = _maxY - _topPos - _startH
            h = _startH + dh
            if (h < _minH)
              h = _minH
            _dialog.style.height = h + "px"
          }
          else if (_resizeMode == "nw") {
            dw = _startX - evt.pageX
            dh = _startY - evt.pageY
            if (_leftPos - dw < 0)
              dw = _leftPos
            if (_topPos - dh < 0)
              dh = _topPos
            w = _startW + dw
            h = _startH + dh
            if (w < _minW) {
              w = _minW
              dw = w - _startW
            }
            if (h < _minH) {
              h = _minH
              dh = h - _startH
            }
            _dialog.style.width = w + "px"
            _dialog.style.height = h + "px"
            _dialog.style.left = (_leftPos - dw) + "px"
            _dialog.style.top = (_topPos - dh) + "px"
          }
          else if (_resizeMode == "sw") {
            dw = _startX - evt.pageX
            dh = evt.pageY - _startY
            if (_leftPos - dw < 0)
              dw = _leftPos
            if (_topPos + _startH + dh > _maxY)
              dh = _maxY - _topPos - _startH
            w = _startW + dw
            h = _startH + dh
            if (w < _minW) {
              w = _minW
              dw = w - _startW
            }
            if (h < _minH)
              h = _minH
            _dialog.style.width = w + "px"
            _dialog.style.height = h + "px"
            _dialog.style.left = (_leftPos - dw) + "px"
          }
          else if (_resizeMode == "ne") {
            dw = evt.pageX - _startX
            dh = _startY - evt.pageY
            if (_leftPos + _startW + dw > _maxX)
              dw = _maxX - _leftPos - _startW
            if (_topPos - dh < 0)
              dh = _topPos
            w = _startW + dw
            h = _startH + dh
            if (w < _minW)
              w = _minW
            if (h < _minH) {
              h = _minH
              dh = h - _startH
            }
            _dialog.style.width = w + "px"
            _dialog.style.height = h + "px"
            _dialog.style.top = (_topPos - dh) + "px"
          }
          else if (_resizeMode == "se") {
            dw = evt.pageX - _startX
            dh = evt.pageY - _startY
            if (_leftPos + _startW + dw > _maxX)
              dw = _maxX - _leftPos - _startW
            if (_topPos + _startH + dh > _maxY)
              dh = _maxY - _topPos - _startH
            w = _startW + dw
            h = _startH + dh
            if (w < _minW)
              w = _minW
            if (h < _minH)
              h = _minH
            _dialog.style.width = w + "px"
            _dialog.style.height = h + "px"
          }
          _setDialogContent()
        }
        else if (!_isButton) {
          var cs, rm = ""
          if (evt.target === _dialog || evt.target === _dialogTitle || evt.target === _buttons[0]) {
            var rect = _getOffset(_dialog)
            if (evt.pageY < rect.top + _resizePixel)
              rm = "n"
            else if (evt.pageY > rect.bottom - _resizePixel)
              rm = "s"
            if (evt.pageX < rect.left + _resizePixel)
              rm += "w"
            else if (evt.pageX > rect.right - _resizePixel)
              rm += "e"
          }
          if (rm != "" && _resizeMode != rm) {
            if (rm == "n" || rm == "s")
              cs = "ns-resize"
            else if (rm == "e" || rm == "w")
              cs = "ew-resize"
            else if (rm == "ne" || rm == "sw")
              cs = "nesw-resize"
            else if (rm == "nw" || rm == "se")
              cs = "nwse-resize"
            _setCursor(cs)
            _resizeMode = rm
          }
          else if (rm == "" && _resizeMode != "") {
            _setCursor("")
            _resizeMode = ""
          }
          if (evt.target != _buttons[0] && evt.target.tagName.toLowerCase() == "button" || evt.target === _buttons[0] && rm == "") {
            if (!_isButtonHovered || _isButtonHovered && evt.target != _whichButton) {
              _whichButton = evt.target
              //_whichButton.classList.add('hover');
              _isButtonHovered = true
            }
          }
          else if (_isButtonHovered) {
            //_whichButton.classList.remove('hover');
            _isButtonHovered = false
          }
        }
        return _returnEvent(evt)
      }
  
    _onMouseUp = function (evt) {
      evt = evt || window.event
      if (_zIndexFlag) {
        _dialog.style.zIndex = _zIndex + 1
        _zIndexFlag = false
      } else {
        _dialog.style.zIndex = _zIndex
      }
      // mousemove might run out of the dialog box during drag or resize, therefore we need to 
      // attach the event to the whole document, but we need to take care that this  
      // does not to mess up normal events outside of the dialog box.
      if (!(evt.target === _dialog || evt.target === _dialogTitle || evt.target === _buttons[0]) && !_isDrag && _resizeMode == "")
        return
      //_isClickEvent = false;
      if (_isDrag) {
        _setCursor("")
        _isDrag = false
      }
      else if (_isResize) {
        _setCursor("")
        _isResize = false
        _resizeMode = ""
      }
      else if (_isButton) {
        _whichButton.classList.remove("active")
        _isButton = false
        _whichClick(_whichButton)
      }
      //else
      //_isClickEvent = true;
      return _returnEvent(evt)
    },
  
      _whichClick = function (btn) {
        _dialog.style.display = "none"
        if (_callback)
          _callback(btn.name)
      },
  
      _getOffset = function (elm) {
        var rect = elm.getBoundingClientRect(),
          offsetX = window.scrollX || document.documentElement.scrollLeft,
          offsetY = window.scrollY || document.documentElement.scrollTop
        return {
          left: rect.left + offsetX,
          top: rect.top + offsetY,
          right: rect.right + offsetX,
          bottom: rect.bottom + offsetY
        }
      },
  
      _setCursor = function (cur) {
        _dialog.style.cursor = cur
        _dialogTitle.style.cursor = cur
        _buttons[0].style.cursor = cur
      },
  
      _setDialogContent = function () {
        // Let's try to get rid of some of constants in javascript but use values from css
        var _dialogContentStyle = getComputedStyle(_dialogContent),
          _dialogButtonPaneStyle,
          _dialogButtonPaneStyleBefore
        // if (_buttons.length > 1) {
        //     _dialogButtonPaneStyle = getComputedStyle(_dialogButtonPane)
        //     _dialogButtonPaneStyleBefore = getComputedStyle(_dialogButtonPane, ":before")
        // }
  
        var w = _dialog.clientWidth
          - parseInt(_dialogContentStyle.left) // .ZulNs-dialog .content { left: 16px; }
          - 16 // right margin?
          ,
          h = _dialog.clientHeight - (
            parseInt(_dialogContentStyle.top) // .ZulNs-dialog .content { top: 48px } 
            + 16 // ?
            // + (_buttons.length > 1 ?
            //     + parseInt(_dialogButtonPaneStyleBefore.borderBottom) // .ZulNs-dialog .buttonpane:before { border-bottom: 1px; }
            //     - parseInt(_dialogButtonPaneStyleBefore.top) // .ZulNs-dialog .buttonpane:before { height: 0; top: -16px; }
            //     + parseInt(_dialogButtonPaneStyle.height) // .ZulNs-dialog .buttonset button { height: 32px; }
            //     + parseInt(_dialogButtonPaneStyle.bottom) // .ZulNs-dialog .buttonpane { bottom: 16px; }
            //     : 0)
          ) // Ensure to get minimal height
        _dialogContent.style.width = w + "px"
        _dialogContent.style.height = h + "px"
  
        if (_dialogButtonPane) // The buttonpane is optional
          _dialogButtonPane.style.width = w + "px"
  
        _dialogTitle.style.width = (w - 16) + "px"
      },
  
      _showDialog = function () {
        _dialog.style.display = "block"
        // if (_buttons[1]) // buttons are optional
        //     _buttons[1].focus();
        // else
        //     _buttons[0].focus();
      },
  
      _init = function (id, callback) {
        _dialog = document.getElementById(id)
        _callback = callback // Register callback function
  
        _dialog.style.visibility = "hidden" // We dont want to see anything..
        _dialog.style.display = "block" // but we need to render it to get the size of the dialog box
  
        _dialogTitle = _dialog.querySelector(".titlebar")
        _dialogContent = _dialog.querySelector(".content")
        _dialogButtonPane = _dialog.querySelector(".buttonpane")
        _buttons = _dialog.querySelectorAll("button")  // Ensure to get minimal width
  
        // Let's try to get rid of some of constants in javascript but use values from css
        var _dialogStyle = getComputedStyle(_dialog),
          _dialogTitleStyle = getComputedStyle(_dialogTitle),
          _dialogContentStyle = getComputedStyle(_dialogContent),
          _dialogButtonPaneStyle,
          _dialogButtonPaneStyleBefore,
          _dialogButtonStyle
        // if (_buttons.length > 1) {
        //     _dialogButtonPaneStyle = getComputedStyle(_dialogButtonPane)
        //     _dialogButtonPaneStyleBefore = getComputedStyle(_dialogButtonPane, ":before")
        //     _dialogButtonStyle = getComputedStyle(_buttons[1])
        // }
  
        // Calculate minimal width
        _minW = Math.max(_dialog.clientWidth, _minW,
          // + (_buttons.length > 1 ?
          //     + (_buttons.length - 1) * parseInt(_dialogButtonStyle.width) // .ZulNs-dialog .buttonset button { width: 64px; }
          //     + (_buttons.length - 1 - 1) * 16 // .ZulNs-dialog .buttonset button { margin-left: 16px; } // but not for first-child
          //     + (_buttons.length - 1 - 1) * 16 / 2 // The formula is not correct, however, with fixed value 16 for margin-left: 16px it works
          //     : 0)
          0
        )
        _dialog.style.width = _minW + "px"
  
        // Calculate minimal height
        _minH = Math.max(_dialog.clientHeight, _minH,
          + parseInt(_dialogContentStyle.top) // .ZulNs-dialog .content { top: 48px } 
          + (2 * parseInt(_dialogStyle.border)) // .ZulNs-dialog { border: 1px }
          + 16 // ?
          + 12 // .p { margin-block-start: 1em; } // default
          + 12 // .ZulNs-dialog { font-size: 12px; } // 1em = 12px
          + 12 // .p { margin-block-end: 1em; } // default
          // + (_buttons.length > 1 ?
          //     + parseInt(_dialogButtonPaneStyleBefore.borderBottom) // .ZulNs-dialog .buttonpane:before { border-bottom: 1px; }
          //     - parseInt(_dialogButtonPaneStyleBefore.top) // .ZulNs-dialog .buttonpane:before { height: 0; top: -16px; }
          //     + parseInt(_dialogButtonPaneStyle.height) // .ZulNs-dialog .buttonset button { height: 32px; }
          //     + parseInt(_dialogButtonPaneStyle.bottom) // .ZulNs-dialog .buttonpane { bottom: 16px; }
          //     : 0)
        )
        _dialog.style.height = _minH + "px"
  
        _setDialogContent()
  
        // center the dialog box
        _dialog.style.left = ((window.innerWidth - _dialog.clientWidth) / 2) + "px"
        _dialog.style.top = ((window.innerHeight - _dialog.clientHeight) / 2) + "px"
  
        _dialog.style.display = "none" // Let's hide it again..
        _dialog.style.visibility = "visible" // and undo visibility = 'hidden'
  
        _dialogTitle.tabIndex = "0"
  
        _tabBoundary = document.createElement("div")
        _tabBoundary.tabIndex = "0"
        _dialog.appendChild(_tabBoundary)
  
        _addEvent(_dialog, "mousedown", _onMouseDown)
        // mousemove might run out of the dialog during resize, therefore we need to 
        // attach the event to the whole document, but we need to take care not to mess 
        // up normal events outside of the dialog.
        _addEvent(document, "mousemove", _onMouseMove)
        // mouseup might happen out of the dialog during resize, therefore we need to 
        // attach the event to the whole document, but we need to take care not to mess 
        // up normal events outside of the dialog.
        _addEvent(document, "mouseup", _onMouseUp)
        for (var i = 0; i < _buttons.length; i++) {
          if (_buttons[i].name == "close") {
            _addEvent(_buttons[i], "click", _onClick)
          }
          _addEvent(_buttons[i], "focus", _onFocus)
          _addEvent(_buttons[i], "blur", _onBlur)
        }
        _addEvent(_dialogTitle, "focus", _adjustFocus)
        _addEvent(_tabBoundary, "focus", _adjustFocus)
  
        _zIndex = _dialog.style.zIndex
      }
  
    // Execute constructor
    _init(id, callback)
  
    // Public interface 
    this.showDialog = _showDialog
    return this
  }
  /* eslint-enable */
  

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