对quill做适配

core.js

@@ -14,6 +14,12 @@ import Clipboard from './modules/clipboard';
 import History from './modules/history';
 import Keyboard from './modules/keyboard';
 
+
+class DividerBlot extends BlockEmbed { }
+DividerBlot.blotName = 'divider';
+DividerBlot.tagName = 'hr';
+Quill.register(DividerBlot);
+
 Quill.register({
   'blots/block'        : Block,
   'blots/block/embed'  : BlockEmbed,

core/quill.js

@@ -56,7 +56,7 @@ class Quill {
     }
   }
 
-  constructor(container, options = {}) {
+  constructor(container, options = {}, shadowRoot, id) {
     this.options = expandConfig(container, options);
     this.container = this.options.container;
     if (this.container == null) {
@@ -78,8 +78,9 @@ class Quill {
       emitter: this.emitter,
       whitelist: this.options.formats
     });
+    this._id = id
     this.editor = new Editor(this.scroll);
-    this.selection = new Selection(this.scroll, this.emitter);
+    this.selection = new Selection(this.scroll, this.emitter, shadowRoot);
     this.theme = new this.options.theme(this, this.options);
     this.keyboard = this.theme.addModule('keyboard');
     this.clipboard = this.theme.addModule('clipboard');
@@ -147,14 +148,15 @@ class Quill {
 
   format(name, value, source = Emitter.sources.API, shadowRoot = document) {
     return modify.call(this, () => {
-      let range = this.getSelection(true, shadowRoot);
+      // focus = true的情况下会导致焦点回到第一个字符串前面
+      let range = this.getSelection(false, shadowRoot);
       let change = new Delta();
       if (range == null) {
         return change;
       } else if (Parchment.query(name, Parchment.Scope.BLOCK)) {
         change = this.editor.formatLine(range.index, range.length, { [name]: value });
       } else if (range.length === 0) {
-        this.selection.format(name, value);
+        this.selection.format(name, value, shadowRoot);
         return change;
       } else {
         change = this.editor.formatText(range.index, range.length, { [name]: value });
@@ -239,7 +241,15 @@ class Quill {