Core component will deduce the context from the dispatched event.target element

lib/components/content.js

@@ -9,6 +9,7 @@ import TYPES from '../utils/types'
 import includes from 'lodash/includes'
 import keycode from 'keycode'
 import { IS_FIREFOX, IS_MAC } from '../utils/environment'
+import findElementWindow from '../utils/find-element-window'
 
 /**
  * Debug.
@@ -380,11 +381,13 @@ class Content extends React.Component {
     // Resolve the point where the drop occured.
     let range
 
+    const contextWindow = findElementWindow(e.nativeEvent.target)
+
     // COMPAT: In Firefox, `caretRangeFromPoint` doesn't exist. (2016/07/25)
-    if (window.document.caretRangeFromPoint) {
+    if (contextWindow.document.caretRangeFromPoint) {
-      range = window.document.caretRangeFromPoint(x, y)
+      range = contextWindow.document.caretRangeFromPoint(x, y)
     } else {
-      range = window.document.createRange()
+      range = contextWindow.document.createRange()
       range.setStart(e.nativeEvent.rangeParent, e.nativeEvent.rangeOffset)
     }
 
@@ -459,9 +462,11 @@ class Content extends React.Component {
     if (isNonEditable(e)) return
     debug('onInput')
 
+    const contextWindow = findElementWindow(e.nativeEvent.target)
+
     let { state, renderDecorations } = this.props
     const { selection } = state
-    const native = window.getSelection()
+    const native = contextWindow.getSelection()
     const { anchorNode, anchorOffset, focusOffset } = native
     const point = this.getPoint(anchorNode, anchorOffset)
     const { key, index, start, end } = point
@@ -624,9 +629,11 @@ class Content extends React.Component {
     if (this.tmp.isComposing) return
     if (isNonEditable(e)) return
 
+    const contextWindow = findElementWindow(e.nativeEvent.target)
+
     const { state, renderDecorations } = this.props
     let { document, selection } = state
-    const native = window.getSelection()
+    const native = contextWindow.getSelection()
     const data = {}
 
     // If there are no ranges, the editor was blurred natively.

lib/components/leaf.js

@@ -3,7 +3,7 @@ import Debug from 'debug'
 import OffsetKey from '../utils/offset-key'
 import React from 'react'
 import ReactDOM from 'react-dom'
-
+import findElementWindow from '../utils/find-element-window'
 /**
  * Debugger.
  *
@@ -135,14 +135,16 @@ class Leaf extends React.Component {
       focusOffset = 0
     }
 
+    const contextWindow = findElementWindow(ReactDOM.findDOMNode(this));
+
     // We have a selection to render, so prepare a few things...
-    const native = window.getSelection()
+    const native = contextWindow.getSelection()
     const el = findDeepestNode(ReactDOM.findDOMNode(this))
 
     // If both the start and end are here, set the selection all at once.
     if (hasAnchor && hasFocus) {
       native.removeAllRanges()
-      const range = window.document.createRange()
+      const range = contextWindow.document.createRange()
       range.setStart(el, anchorOffset - start)
       native.addRange(range)
       native.extend(el, focusOffset - start)
@@ -155,7 +157,7 @@ class Leaf extends React.Component {
     if (selection.isForward) {
       if (hasAnchor) {
         native.removeAllRanges()
-        const range = window.document.createRange()
+        const range = contextWindow.document.createRange()
         range.setStart(el, anchorOffset - start)
         native.addRange(range)
       } else if (hasFocus) {
@@ -170,14 +172,14 @@ class Leaf extends React.Component {
     else {
       if (hasFocus) {
         native.removeAllRanges()
-        const range = window.document.createRange()
+        const range = contextWindow.document.createRange()
         range.setStart(el, focusOffset - start)
         native.addRange(range)
       } else if (hasAnchor) {
         const endNode = native.focusNode
         const endOffset = native.focusOffset
         native.removeAllRanges()
-        const range = window.document.createRange()
+        const range = contextWindow.document.createRange()
         range.setStart(el, anchorOffset - start)
         native.addRange(range)
         native.extend(endNode, endOffset)

lib/plugins/core.js

@@ -5,6 +5,7 @@ import Debug from 'debug'
 import Placeholder from '../components/placeholder'
 import React from 'react'
 import String from '../utils/string'
+import findElementWindow from '../utils/find-element-window'
 
 /**
  * Debug.
@@ -28,7 +29,7 @@ function Plugin(options = {}) {
   const {
     placeholder,
     placeholderClassName,
-    placeholderStyle
+    placeholderStyle,
   } = options
 
   /**
@@ -204,7 +205,9 @@ function Plugin(options = {}) {
    */
 
   function onCutOrCopy(e, data, state) {
-    const native = window.getSelection()
+    const contextWindow = findElementWindow(e.nativeEvent.target)
+
+    const native = contextWindow.getSelection()
     if (!native.rangeCount) return
 
     const { fragment } = data
@@ -214,10 +217,10 @@ function Plugin(options = {}) {
     // fragment attached as an attribute, so it will show up in the copied HTML.
     const range = native.getRangeAt(0)
     const contents = range.cloneContents()
-    const wrapper = window.document.createElement('span')
+    const wrapper = contextWindow.document.createElement('span')
     const text = contents.childNodes[0]
     const char = text.textContent.slice(0, 1)
-    const first = window.document.createTextNode(char)
+    const first = contextWindow.document.createTextNode(char)
     const rest = text.textContent.slice(1)
     text.textContent = rest
     wrapper.appendChild(first)
@@ -225,8 +228,8 @@ function Plugin(options = {}) {
     contents.insertBefore(wrapper, text)
 
     // Add the phony content to the DOM, and select it, so it will be copied.
-    const body = window.document.querySelector('body')
+    const body = contextWindow.document.querySelector('body')
-    const div = window.document.createElement('div')
+    const div = contextWindow.document.createElement('div')
     div.setAttribute('contenteditable', true)
     div.style.position = 'absolute'
     div.style.left = '-9999px'
@@ -235,7 +238,7 @@ function Plugin(options = {}) {
 
     // COMPAT: In Firefox, trying to use the terser `native.selectAllChildren`
     // throws an error, so we use the older `range` equivalent. (2016/06/21)
-    const r = window.document.createRange()
+    const r = contextWindow.document.createRange()
     r.selectNodeContents(div)
     native.removeAllRanges()
     native.addRange(r)

lib/utils/find-element-window.js

@@ -0,0 +1,12 @@
+/**
+ * Find the DOM context for the `node`, fallback to top level global window object.
+ *
+ * @param {Node} node
+ * @return {Element} el
+ */
+function findElementWindow (domNode) {
+    const doc = domNode.ownerDocument || domNode
+    return doc.defaultView || doc.parentWindow
+}
+
+export default findElementWindow