All files / client crowi-form.ts

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$(function() {
  const crowi = window.crowi
  const crowiRenderer = window.crowiRenderer
  const inlineAttachment = window.inlineAttachment
 
  var pageId = $('#content-main').data('page-id')
  var pagePath = $('#content-main').data('path')
 
  // show/hide
  function FetchPagesUpdatePostAndInsert(path) {
    $.get('/_api/pages.updatePost', { path: path }, function(res) {
      if (res.ok) {
        var $slackChannels = $('#page-form-slack-channel')
        $slackChannels.val(res.updatePost.join(','))
      }
    })
  }
 
  var slackConfigured = $('#page-form-setting').data('slack-configured')
 
  // for new page
  if (!pageId) {
    if (!pageId && pagePath.match(/(20\d{4}|20\d{6}|20\d{2}_\d{1,2}|20\d{2}_\d{1,2}_\d{1,2})/)) {
      $('#page-warning-modal').modal('show')
    }
 
    if (slackConfigured) {
      FetchPagesUpdatePostAndInsert(pagePath)
    }
  }
 
  $('a[data-toggle="tab"][href="#edit-form"]').on('show.bs.tab', function() {
    $('.content-main').addClass('on-edit')
 
    if (slackConfigured) {
      var $slackChannels = $('#page-form-slack-channel')
      var slackChannels = $slackChannels.val()
      // if slackChannels is empty, then fetch default (admin setting)
      // if not empty, it means someone specified this setting for the page.
      if (slackChannels === '') {
        FetchPagesUpdatePostAndInsert(pagePath)
      }
    }
  })
 
  $('a[data-toggle="tab"][href="#edit-form"]').on('hide.bs.tab', function() {
    $('.content-main').removeClass('on-edit')
  })
 
  // preview watch
  var originalContent = $('#form-body').val()
 
  // restore draft
  // とりあえず、originalContent がない場合のみ復元する。(それ以外の場合は後で考える)
  var draft = crowi.findDraft(pagePath)
  var originalRevision = $('#page-form [name="pageForm[currentRevision]"]').val()
  if (!originalRevision && draft) {
    // TODO
    $('#form-body').val(draft)
  }
 
  var prevContent = originalContent
 
  function renderPreview() {
    var content = $('#form-body').val() as string
    var previewBody = $('#preview-body')
    var previewBodyElement = previewBody[0] as HTMLDivElement
    var parsedHTML = crowiRenderer.render(content, previewBodyElement)
    previewBody.html(parsedHTML)
  }
 
  // for initialize preview
  renderPreview()
  setInterval(function() {
    var content = $('#form-body').val()
    if (prevContent != content) {
      renderPreview()
      prevContent = content
    }
  }, 500)
 
  // edit detection
  var isFormChanged = false
  $(window).on('beforeunload', function(e) {
    if (isFormChanged) {
      // TODO i18n
      return "You haven't finished your comment yet. Do you want to leave without finishing?"
    }
  })
  $('#form-body').on('keyup change', function(e) {
    var content = $('#form-body').val() as string
    if (originalContent != content) {
      isFormChanged = true
      crowi.saveDraft(pagePath, content)
    } else {
      isFormChanged = false
      crowi.clearDraft(pagePath)
    }
  })
  $('#page-form').on('submit', function(e) {
    // avoid message
    isFormChanged = false
    crowi.clearDraft(pagePath)
  })
 
  // This is a temporary implementation until porting to React.
  var insertText = function(start, end, newText, mode) {
    var editor = document.querySelector('#form-body') as HTMLTextAreaElement
    mode = mode || 'after'
 
    switch (mode) {
      case 'before':
        editor.setSelectionRange(start, start)
        break
      case 'replace':
        editor.setSelectionRange(start, end)
        break
      case 'after':
      default:
        editor.setSelectionRange(end, end)
    }
 
    editor.focus()
 
    var inserted = false
    try {
      // Chrome, Safari
      inserted = document.execCommand('insertText', false, newText)
    } catch (e) {
      inserted = false
    }
 
    if (!inserted) {
      // Firefox
      editor.value = editor.value.substr(0, start) + newText + editor.value.substr(end)
    }
  }
 
  var getCurrentLine = function(event) {
    var $target = $(event.target)
 
    var text = $target.val() as string
    var pos = $target.selection('getPos')
    if (text === null || pos.start !== pos.end) {
      return null
    }
 
    var startPos = text.lastIndexOf('\n', pos.start - 1) + 1
    var endPos = text.indexOf('\n', pos.start)
    if (endPos === -1) {
      endPos = text.length
    }
 
    return {
      text: text.slice(startPos, endPos),
      start: startPos,
      end: endPos,
      caret: pos.start,
      endOfLine: !$.trim(text.slice(pos.start, endPos)),
    }
  }
 
  var getPrevLine = function(event) {
    var $target = $(event.target)
    var currentLine = getCurrentLine(event)
    var start = currentLine ? currentLine.start : 0
    var text = ($target.val() as string).slice(0, start)
    var startPos = text.lastIndexOf('\n', start - 2) + 1
    var endPos = start
 
    return {
      text: text.slice(startPos, endPos),
      start: startPos,
      end: endPos,
    }
  }
 
  var handleTabKey = function(event) {
    event.preventDefault()
 
    var $target = $(event.target)
    var currentLine = getCurrentLine(event)
    var text = $target.val() as string
    var pos = $target.selection('getPos')
 
    // When the user presses CTRL + TAB, it is a case to control the tab of the browser
    // (for Firefox 54 on Windows)
    if (event.ctrlKey === true) {
      return
    }
 
    if (currentLine) {
      $target.selection('setPos', { start: currentLine.start, end: currentLine.end - 1 })
    }
 
    if (event.shiftKey === true) {
      if (currentLine && currentLine.text.charAt(0) === '|') {
        // prev cell in table
        var newPos = text.lastIndexOf('|', pos.start - 1)
        if (newPos > 0) {
          $target.selection('setPos', { start: newPos - 1, end: newPos - 1 })
        }
      } else {
        // re indent
        var reindentedText = $target.selection().replace(/^ {1,4}/gm, '')
        var reindentedCount = $target.selection().length - reindentedText.length
        $target.selection('replace', { text: reindentedText, mode: 'before' })
        if (currentLine) {
          $target.selection('setPos', { start: pos.start - reindentedCount, end: pos.start - reindentedCount })
        }
      }
    } else {
      if (currentLine && currentLine.text.charAt(0) === '|') {
        // next cell in table
        var newPos = text.indexOf('|', pos.start + 1)
        if (newPos < 0 || newPos === text.lastIndexOf('|', currentLine.end - 1)) {
          $target.selection('setPos', { start: currentLine.end, end: currentLine.end })
        } else {
          $target.selection('setPos', { start: newPos + 2, end: newPos + 2 })
        }
      } else {
        // indent
        $target.selection('replace', {
          text:
            '    ' +
            $target
              .selection()
              .split('\n')
              .join('\n    '),
          mode: 'before',
        })
        if (currentLine) {
          $target.selection('setPos', { start: pos.start + 4, end: pos.start + 4 })
        }
      }
    }
 
    $target.trigger('input')
  }
 
  var handleEnterKey = function(event) {
    if (event.metaKey || event.ctrlKey || event.shiftKey) {
      return
    }
 
    var currentLine = getCurrentLine(event)
    if (!currentLine || currentLine.start === currentLine.caret) {
      return
    }
 
    var $target = $(event.target)
    var match = currentLine.text.match(/^(\s*(?:-|\+|\*|\d+\.) (?:\[(?:x| )\] )?)\s*\S/)
    if (match) {
      // smart indent with list
      if (currentLine.text.match(/^(\s*(?:-|\+|\*|\d+\.) (?:\[(?:x| )\] ))\s*$/)) {
        // empty task list
        $target.selection('setPos', { start: currentLine.start, end: currentLine.end - 1 })
        return
      }
      event.preventDefault()
      var listMark = match[1].replace(/\[x\]/, '[ ]')
      var listMarkMatch = listMark.match(/^(\s*)(\d+)\./)
      if (listMarkMatch) {
        var indent = listMarkMatch[1]
        var num = parseInt(listMarkMatch[2])
        if (num !== 1) {
          listMark = listMark.replace(/\s*\d+/, indent + (num + 1))
        }
      }
      // $target.selection('insert', {text: "\n" + listMark, mode: 'before'});
      var pos = $target.selection('getPos')
      insertText(pos.start, pos.start, '\n' + listMark, 'replace')
      var newPosition = pos.start + ('\n' + listMark).length
      $target.selection('setPos', { start: newPosition, end: newPosition })
    } else if (currentLine.text.match(/^(\s*(?:-|\+|\*|\d+\.) )/)) {
      // remove list
      $target.selection('setPos', { start: currentLine.start, end: currentLine.end })
    } else if (currentLine.text.match(/^.*\|\s*$/)) {
      // new row for table
      if (currentLine.text.match(/^[|\s]+$/)) {
        $target.selection('setPos', { start: currentLine.start, end: currentLine.end })
        return
      }
      if (!currentLine.endOfLine) {
        return
      }
      event.preventDefault()
      var row: string[] = []
      var cellbarMatch = currentLine.text.match(/\|/g) as RegExpMatchArray
      for (var i = 0; i < cellbarMatch.length; i++) {
        row.push('|')
      }
      var prevLine = getPrevLine(event)
      if (!prevLine || (!currentLine.text.match(/---/) && !prevLine.text.match(/\|/g))) {
        // $target.selection('insert', {text: "\n" + row.join(' --- ') + "\n" + row.join('  '), mode: 'before'});
        var pos = $target.selection('getPos')
        insertText(pos.start, pos.start, '\n' + row.join(' --- ') + '\n' + row.join('  '), 'after')
        $target.selection('setPos', {
          start: currentLine.caret + 6 * row.length - 1,
          end: currentLine.caret + 6 * row.length - 1,
        })
      } else {
        // $target.selection('insert', {text: "\n" + row.join('  '), mode: 'before'});
        var pos = $target.selection('getPos')
        insertText(pos.start, pos.end, '\n' + row.join('  '), 'after')
        $target.selection('setPos', { start: currentLine.caret + 3, end: currentLine.caret + 3 })
      }
    }
 
    $target.trigger('input')
  }
 
  var handleEscapeKey = function(event) {
    event.preventDefault()
    var $target = $(event.target)
    $target.blur()
  }
 
  var handleSpaceKey = function(event) {
    // keybind: alt + shift + space
    if (!(event.shiftKey && event.altKey)) {
      return
    }
    var currentLine = getCurrentLine(event)
    if (!currentLine) {
      return
    }
 
    var $target = $(event.target)
    var match = currentLine.text.match(/^(\s*)(-|\+|\*|\d+\.) (?:\[(x| )\] )(.*)/)
    if (match) {
      event.preventDefault()
      var checkMark = match[3] == ' ' ? 'x' : ' '
      var replaceTo = match[1] + match[2] + ' [' + checkMark + '] ' + match[4]
      $target.selection('setPos', { start: currentLine.start, end: currentLine.end })
      // $target.selection('replace', {text: replaceTo, mode: 'keep'});
      insertText(currentLine.start, currentLine.end, replaceTo, 'replace')
      $target.selection('setPos', { start: currentLine.caret, end: currentLine.caret })
      $target.trigger('input')
    }
  }
 
  // markdown helper inspired by 'esarea'.
  // see: https://github.com/fukayatsu/esarea
  $('textarea#form-body').on('keydown', function(event) {
    switch (event.which || event.keyCode) {
      case 9:
        handleTabKey(event)
        break
      case 13:
        handleEnterKey(event)
        break
      case 27:
        handleEscapeKey(event)
        break
      case 32:
        handleSpaceKey(event)
        break
      default:
    }
  })
 
  var handlePasteEvent = function(event) {
    var currentLine = getCurrentLine(event)
 
    if (!currentLine) {
      return false
    }
    var $target = $(event.target)
    var pasteText = event.clipboardData.getData('text')
 
    var match = currentLine.text.match(/^(\s*(?:>|-|\+|\*|\d+\.) (?:\[(?:x| )\] )?)/)
    if (match) {
      if (pasteText.match(/(?:\r\n|\r|\n)/)) {
        pasteText = pasteText.replace(/(\r\n|\r|\n)/g, '$1' + match[1])
      }
    }
 
    // $target.selection('insert', {text: pasteText, mode: 'after'});
    insertText(currentLine.caret, currentLine.caret, pasteText, 'replace')
 
    var newPos = currentLine.caret + pasteText.length
    $target.selection('setPos', { start: newPos, end: newPos })
 
    return true
  }
 
  const formBody = document.getElementById('form-body')
  if (formBody) {
    formBody.addEventListener('paste', function(event) {
      if (handlePasteEvent(event)) {
        event.preventDefault()
      }
    })
  }
 
  var unbindInlineAttachment = function($form) {
    $form.unbind('.inlineattach')
  }
  var bindInlineAttachment = function($form, attachmentOption) {
    var editor = createEditorInstance($form)
    var InlineAttachment = inlineAttachment
    var inlineattach = new InlineAttachment(attachmentOption, editor)
    $form.bind({
      'paste.inlineattach': function(e) {
        inlineattach.onPaste(e.originalEvent)
      },
      'drop.inlineattach': function(e) {
        e.stopPropagation()
        e.preventDefault()
        inlineattach.onDrop(e.originalEvent)
      },
      'dragenter.inlineattach dragover.inlineattach': function(e) {
        e.stopPropagation()
        e.preventDefault()
      },
    })
  }
  var createEditorInstance = function($form) {
    var $this = $form
 
    return {
      getValue: function() {
        return $this.val()
      },
      insertValue: function(val) {
        inlineAttachment.util.insertTextAtCursor($this[0], val)
      },
      setValue: function(val) {
        $this.val(val)
      },
    }
  }
 
  var $inputForm = $('form.uploadable textarea#form-body')
  if ($inputForm.length > 0) {
    var csrfToken = $('form.uploadable input#edit-form-csrf').val()
    var pageId = $('#content-main').data('page-id') || 0
    var attachmentOption: any = {
      uploadUrl: '/_api/attachments.add',
      extraParams: {
        path: location.pathname,
        page_id: pageId,
        _csrf: csrfToken,
      },
      progressText: '(Uploading file...)',
      jsonFieldName: 'url',
      allowedTypes: ['image/jpeg', 'image/png', 'image/jpg', 'image/gif', 'image/svg+xml'],
    }
 
    // if files upload is set
    var config = crowi.getConfig()
    if (config.upload && config.upload.file) {
      attachmentOption.allowedTypes = '*'
    }
 
    attachmentOption.remoteFilename = function(file) {
      return file.name
    }
 
    attachmentOption.onFileReceived = function(file) {
      // if not image
      if (!file.type.match(/^image\/.+$/)) {
        // modify urlText with 'a' tag
        this.settings.urlText = `[${file.name}]({filename})\n`
      } else {
        this.settings.urlText = `![${file.name}]({filename})\n`
      }
    }
 
    attachmentOption.onFileUploadResponse = function(res) {
      var result = JSON.parse(res.response)
 
      if (result.ok && result.pageCreated) {
        var page = result.page
        var pageId = page._id
 
        $('#content-main').data('page-id', page._id)
        $('#page-form [name="pageForm[currentRevision]"]').val(page.revision._id)
 
        unbindInlineAttachment($inputForm)
 
        attachmentOption.extraParams.page_id = pageId
        bindInlineAttachment($inputForm, attachmentOption)
      }
      return true
    }
 
    bindInlineAttachment($inputForm, attachmentOption)
 
    $('textarea#form-body').on('dragenter dragover', function() {
      $(this).addClass('dragover')
    })
    $('textarea#form-body').on('drop dragleave dragend', function() {
      $(this).removeClass('dragover')
    })
  }
 
  var enableScrollSync = function() {
    var getMaxScrollTop = function(dom) {
      var rect = dom.getBoundingClientRect()
 
      return dom.scrollHeight - rect.height
    }
 
    var getScrollRate = function(dom) {
      var maxScrollTop = getMaxScrollTop(dom)
      var rate = dom.scrollTop / maxScrollTop
 
      return rate
    }
 
    var getScrollTop = function(dom, rate) {
      var maxScrollTop = getMaxScrollTop(dom)
      var top = maxScrollTop * rate
 
      return top
    }
 
    var editor = document.querySelector('#form-body') as HTMLTextAreaElement
    var preview = document.querySelector('#preview-body') as HTMLDivElement
 
    editor.addEventListener('scroll', function(event) {
      var rate = getScrollRate(this)
      var top = getScrollTop(preview, rate)
 
      preview.scrollTop = top
    })
  }
  enableScrollSync()
})