openrat-cms

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fromTextArea.min.js (1951B)

      1 import { CodeMirror } from "./CodeMirror.js"
      2 import { activeElt } from "../util/dom.js"
      3 import { off, on } from "../util/event.js"
      4 import { copyObj } from "../util/misc.js"
      5 
      6 export function fromTextArea(textarea, options) {
      7   options = options ? copyObj(options) : {}
      8   options.value = textarea.value
      9   if (!options.tabindex && textarea.tabIndex)
     10     options.tabindex = textarea.tabIndex
     11   if (!options.placeholder && textarea.placeholder)
     12     options.placeholder = textarea.placeholder
     13   // Set autofocus to true if this textarea is focused, or if it has
     14   // autofocus and no other element is focused.
     15   if (options.autofocus == null) {
     16     let hasFocus = activeElt()
     17     options.autofocus = hasFocus == textarea ||
     18       textarea.getAttribute("autofocus") != null && hasFocus == document.body
     19   }
     20 
     21   function save() {textarea.value = cm.getValue()}
     22 
     23   let realSubmit
     24   if (textarea.form) {
     25     on(textarea.form, "submit", save)
     26     // Deplorable hack to make the submit method do the right thing.
     27     if (!options.leaveSubmitMethodAlone) {
     28       let form = textarea.form
     29       realSubmit = form.submit
     30       try {
     31         let wrappedSubmit = form.submit = () => {
     32           save()
     33           form.submit = realSubmit
     34           form.submit()
     35           form.submit = wrappedSubmit
     36         }
     37       } catch(e) {}
     38     }
     39   }
     40 
     41   options.finishInit = cm => {
     42     cm.save = save
     43     cm.getTextArea = () => textarea
     44     cm.toTextArea = () => {
     45       cm.toTextArea = isNaN // Prevent this from being ran twice
     46       save()
     47       textarea.parentNode.removeChild(cm.getWrapperElement())
     48       textarea.style.display = ""
     49       if (textarea.form) {
     50         off(textarea.form, "submit", save)
     51         if (typeof textarea.form.submit == "function")
     52           textarea.form.submit = realSubmit
     53       }
     54     }
     55   }
     56 
     57   textarea.style.display = "none"
     58   let cm = CodeMirror(node => textarea.parentNode.insertBefore(node, textarea.nextSibling),
     59     options)
     60   return cm
     61 }