Function fromTextArea

external/.scrollLibs.js:13117–13179

(textarea, options)

  TextareaInput.prototype.needsContentAttribute = false

  function fromTextArea(textarea, options) {
    options = options ? copyObj(options) : {}
    options.value = textarea.value
    if (!options.tabindex && textarea.tabIndex) {
      options.tabindex = textarea.tabIndex
    }
    if (!options.placeholder && textarea.placeholder) {
      options.placeholder = textarea.placeholder
    }
    // Set autofocus to true if this textarea is focused, or if it has
    // autofocus and no other element is focused.
    if (options.autofocus == null) {
      var hasFocus = activeElt()
      options.autofocus = hasFocus == textarea || (textarea.getAttribute("autofocus") != null && hasFocus == document.body)
    }

    function save() {
      textarea.value = cm.getValue()
    }

    var realSubmit
    if (textarea.form) {
      on(textarea.form, "submit", save)
      // Deplorable hack to make the submit method do the right thing.
      if (!options.leaveSubmitMethodAlone) {
        var form = textarea.form
        realSubmit = form.submit
        try {
          var wrappedSubmit = (form.submit = function () {
            save()
            form.submit = realSubmit
            form.submit()
            form.submit = wrappedSubmit
          })
        } catch (e) {}
      }
    }

    options.finishInit = function (cm) {
      cm.save = save
      cm.getTextArea = function () {
        return textarea
      }
      cm.toTextArea = function () {
        cm.toTextArea = isNaN // Prevent this from being ran twice
        save()
        textarea.parentNode.removeChild(cm.getWrapperElement())
        textarea.style.display = ""
        if (textarea.form) {
          off(textarea.form, "submit", save)
          if (typeof textarea.form.submit == "function") {
            textarea.form.submit = realSubmit
          }
        }
      }
    }

    textarea.style.display = "none"