native对象及属性改为只读

usr/lib/python3/dist-packages/webengine/gtk3/inject.js

@@ -3,7 +3,7 @@
  * @author yutent<yutent.io@gmail.com>
  * @date 2023/07/21 17:38:11
  */
-
+!(function () {
   const MIME_TYPES = {
     html: 'text/html',
     json: 'application/json',
@@ -48,6 +48,8 @@ const KEYS_MAP = {
   const NO_CALLBACK = false
   const CALL_ONCE = true
 
+  const __events__ = Symbol('events')
+
   function defer() {
     let obj = {}
     obj.promise = new Promise((resolve, reject) => {
@@ -112,6 +114,12 @@ function readonly(obj, key, value) {
     })
   }
 
+  function _extend(origin, options = {}) {
+    for (let k in options) {
+      readonly(origin, k, options[k])
+    }
+  }
+
   class NativeImage {
     #origin
 
@@ -165,15 +173,15 @@ class NativeImage {
     }
   }
 
-class EventEmitter {
+  class Native {
     //
-  __events__ = Object.create(null)
+    [__events__] = Object.create(null)
 
     $on(name, fn) {
-    if (this.__events__[name]) {
+      if (this[__events__][name]) {
-      this.__events__[name].push(fn)
+        this[__events__][name].push(fn)
       } else {
-      this.__events__[name] = [fn]
+        this[__events__][name] = [fn]
       }
     }
 
@@ -183,18 +191,20 @@ class EventEmitter {
     }
 
     $off(name, fn) {
-    if (this.__events__[name]) {
+      if (this[__events__][name]) {
         if (fn) {
-        this.__events__[name] = this.__events__[name].filter(it => it !== fn)
+          this[__events__][name] = this[__events__][name].filter(
+            it => it !== fn
+          )
         } else {
-        this.__events__[name] = []
+          this[__events__][name] = []
         }
       }
     }
 
     $emit(name, ...args) {
-    if (this.__events__[name]) {
+      if (this[__events__][name]) {
-      for (let fn of this.__events__[name]) {
+        for (let fn of this[__events__][name]) {
           try {
             fn.apply(this, args)
             if (fn.__once__) {
@@ -208,15 +218,15 @@ class EventEmitter {
     }
 
     $destroy() {
-    this.__events__ = Object.create(null)
+      this[__events__] = Object.create(null)
     }
   }
 
-readonly(window, 'native', new EventEmitter())
+  readonly(window, 'native', new Native())
 
   native.$on('opener_message', (data, uuid) => _postMessage(data, uuid))
 
-Object.assign(native, {
+  _extend(native, {
     env: '{{env}}',
     app: {
       name: '{{app_name}}',
@@ -440,7 +450,11 @@ Object.assign(native, {
         handler('window', { action: 'move', value: { x, y } }, NO_CALLBACK)
       },
       setOpacity(opacity = 1) {
-      handler('window', { action: 'set_opacity', value: opacity }, NO_CALLBACK)
+        handler(
+          'window',
+          { action: 'set_opacity', value: opacity },
+          NO_CALLBACK
+        )
       },
       alwayOnTop(setting = true) {
         handler(
@@ -488,3 +502,4 @@ Object.assign(native, {
 
     handler
   })
+})()