优化layer事件

src/layer/index.wc

@@ -488,8 +488,8 @@ class Layer {
     /* ------------------------ */
     if (this.props.mask) {
       this._handlMask = clickOutside(this.root.children[1], ev => {
-        // 只作用于wc-layer
-        if (ev.target.tagName !== 'WC-LAYER') {
+        // 只作用于当前wc-layer
+        if (ev.target !== this) {
           return
         }
         if (this.props['mask-close']) {

src/neditor/index.wc

@@ -256,8 +256,7 @@ const DEFAULT_TOOLS = [
   'center',
   'right',
   'link',
-  'image',
-  'topic'
+  'image'
 ]
 
 function renderToolbar(list) {
@@ -428,10 +427,6 @@ export default class Neditor {
           // 这里不作任何处理
           break
 
-        case 'topic':
-          this.exec('insertHtml', '#话题#')
-          break
-
         default:
           this.__EDITOR__.focus()
           this.restoreSelection()