Shadow DOM support and tests

core/emitter.js

@@ -1,17 +1,17 @@
 import EventEmitter from 'eventemitter3';
 import logger from './logger';
+import { SHADOW_SELECTIONCHANGE } from './shadow-selection-polyfill';
 
 let debug = logger('quill:events');
 
-const EVENTS = ['selectionchange', 'mousedown', 'mouseup', 'click'];
+const EVENTS = [SHADOW_SELECTIONCHANGE, 'mousedown', 'mouseup', 'click'];
+const EMITTERS = [];
+const supportsRootNode = ('getRootNode' in document);
 
 EVENTS.forEach(function(eventName) {
   document.addEventListener(eventName, (...args) => {
-    [].slice.call(document.querySelectorAll('.ql-container')).forEach((node) => {
-      // TODO use WeakMap
-      if (node.__quill && node.__quill.emitter) {
-        node.__quill.emitter.handleDOM(...args);
-      }
+    EMITTERS.forEach((em) => {
+      em.handleDOM(...args);
     });
   });
 });
@@ -21,6 +21,7 @@ class Emitter extends EventEmitter {
   constructor() {
     super();
     this.listeners = {};
+    EMITTERS.push(this);
     this.on('error', debug.error);
   }
 
@@ -30,8 +31,25 @@ class Emitter extends EventEmitter {
   }
 
   handleDOM(event, ...args) {
+    const target = (event.composedPath ? event.composedPath()[0] : event.target);
+    const containsNode = (node, target) => {
+      if (!supportsRootNode || target.getRootNode() === document) {
+        return node.contains(target);
+      }
+
+      while (!node.contains(target)) {
+        const root = target.getRootNode();
+        if (!root || !root.host) {
+          return false;
+        }
+        target = root.host;
+      }
+
+      return true;
+    };
+
     (this.listeners[event.type] || []).forEach(function({ node, handler }) {
-      if (event.target === node || node.contains(event.target)) {
+      if (target === node || containsNode(node, target)) {
         handler(event, ...args);
       }
     });

core/selection.js

@@ -3,6 +3,7 @@ import clone from 'clone';
 import equal from 'deep-equal';
 import Emitter from './emitter';
 import logger from './logger';
+import { SHADOW_SELECTIONCHANGE, getRange } from './shadow-selection-polyfill';
 
 let debug = logger('quill:selection');
 
@@ -22,12 +23,13 @@ class Selection {
     this.composing = false;
     this.mouseDown = false;
     this.root = this.scroll.domNode;
+    this.rootDocument = (this.root.getRootNode ? this.root.getRootNode() : document);
     this.cursor = Parchment.create('cursor', this);
     // savedRange is last non-null range
     this.lastRange = this.savedRange = new Range(0, 0);
     this.handleComposition();
     this.handleDragging();
-    this.emitter.listenDOM('selectionchange', document, () => {
+    this.emitter.listenDOM(SHADOW_SELECTIONCHANGE, document, () => {
       if (!this.mouseDown) {
         setTimeout(this.update.bind(this, Emitter.sources.USER), 1);
       }
@@ -157,9 +159,7 @@ class Selection {
   }
 
   getNativeRange() {
-    let selection = document.getSelection();
-    if (selection == null || selection.rangeCount <= 0) return null;
-    let nativeRange = selection.getRangeAt(0);
+    let nativeRange = getRange(this.rootDocument);
     if (nativeRange == null) return null;
     let range = this.normalizeNative(nativeRange);
     debug.info('getNativeRange', range);
@@ -174,7 +174,7 @@ class Selection {
   }
 
   hasFocus() {
-    return document.activeElement === this.root;
+    return this.rootDocument.activeElement === this.root;
   }
 
   normalizedToRange(range) {
@@ -268,7 +268,7 @@ class Selection {
     if (startNode != null && (this.root.parentNode == null || startNode.parentNode == null || endNode.parentNode == null)) {
       return;
     }
-    let selection = document.getSelection();
+    let selection = typeof this.rootDocument.getSelection === 'function' ? this.rootDocument.getSelection() : document.getSelection();
     if (selection == null) return;
     if (startNode != null) {
       if (!this.hasFocus()) this.root.focus();