js调用python改为异步; js调用python方法异常信息改为Error对象;优化自定义桥接方法的异常处理

.gitignore

@@ -1,2 +1,3 @@
 __pycache__
+unpack
 *.deb

build.sh

@@ -7,6 +7,7 @@ if [ -d unpack ]; then
   sudo rm -rf unpack
 fi
 
+find usr -type d -name __pycache__ | xargs rm -rf
 
 mkdir -p unpack/DEBIAN
 
@@ -21,6 +22,7 @@ sed -i "s/{{size}}/${_size}/" DEBIAN/control
 sed -i "s/{{version}}/${version}/" DEBIAN/control
 
 cd ..
+sudo chown -R root:root unpack/
 dpkg-deb -b unpack/ "python3-webengine-gtk3-${version}.deb"
 
 sudo rm -rf unpack

debian/control

@@ -4,7 +4,7 @@ Section: develop
 Priority: optional
 Maintainer: Yutent <yutent.io@gmail.com>
 Architecture: all
-Depends: python3 (>=3.10), python3-gi, gir1.2-gtk-3.0, python3-pil, python3-gi-cairo, gir1.2-gdkpixbuf-2.0
+Depends: python3 (>=3.10), python3-gi, gir1.2-webkit2-4.1, gir1.2-gtk-3.0, python3-pil, python3-gi-cairo, gir1.2-gdkpixbuf-2.0
 Recommends: gir1.2-ayatanaappindicator3-0.1, gir1.2-notify-0.7, gir1.2-keybinder-3.0
 Installed-Size: {{size}}
 Homepage: https://git.wkit.fun/appcat/python3-webengine-gtk3

usr/lib/python3/dist-packages/webengine/gtk3/_custom_window.py

@@ -0,0 +1,67 @@
+#!/usr/bin/env python3
+
+import gi
+
+gi.require_version('Gtk', '3.0')
+gi.require_version("WebKit2", "4.1")
+from gi.repository import Gtk, WebKit2
+
+
+def create_same_window(origin, req):
+  WebEngine = type(origin)
+  w, h = origin.window.get_size()
+  win = Gtk.Window()
+  win.set_default_size(w, h)
+
+  web = WebEngine(win, origin)
+  web.set_zoom_level(origin.get_zoom_level())
+  web.set_settings(origin.get_settings())
+  web.load_request(req)
+  
+  win.add(web)
+  win.show_all()
+
+
+
+
+
+def create_custom_window(origin, options):
+  WebEngine = type(origin)
+  _w, _h = origin.window.get_size()
+  w = options.get('width') or _w
+  h = options.get('height') or _h
+  win = Gtk.Window()
+  win.set_default_size(w, h)
+
+  wmclass = options.get('wmclass') or 'WebEngine Window'
+  win.set_wmclass(wmclass, 'WebEngine')
+  win.set_title(options.get('title') or 'WebEngine')
+
+  if options.get('icon_path'):
+    win.set_icon_from_file(options['icon_path'])
+
+  if options.get('icon'):
+    win.set_icon_name(options['icon'])
+
+  if options.get('frame') == False:
+    win.set_decorated(False)
+
+  if options.get('x') is not None and options.get('y') is not None:
+    win.move(options.get('x'), options.get('y'))
+
+  if options.get('always_on_top') == True:
+    win.set_keep_above(options['always_on_top'])
+
+  if options.get('resizable') == False:
+    win.set_resizable(False)
+
+  
+  web = WebEngine(win, origin, options.get('uuid'))
+  web.set_root(origin.root, True)
+  web.set_zoom_level(origin.get_zoom_level())
+  web.set_settings(origin.get_settings())
+  web.load(options.get('url'))
+
+  win.add(web)
+  win.show_all()
+  return web

usr/lib/python3/dist-packages/webengine/gtk3/_env.py

@@ -0,0 +1,13 @@
+#!/usr/bin/env python3
+
+
+import os
+
+home_dir = os.getenv('HOME')
+
+env = {
+  "HOME_DIR": home_dir,
+  "CONFIG_DIR": os.path.join(home_dir, '.config'),
+  "CACHE_DIR": os.path.join(home_dir, '.cache'),
+  "LANG": os.environ['LANG'] or "en_US.UTF-8"
+}

usr/lib/python3/dist-packages/webengine/gtk3/_inject.py

@@ -15,11 +15,16 @@ class Inject:
 
     self.manager = webview.get_user_content_manager()
         
-    script_data = open(self.abspath('./inject.js'), 'r').read()
+    code = open(self.abspath('./inject.js'), 'r').read()
     frame  = WebKit2.UserContentInjectedFrames.ALL_FRAMES
-    time   = WebKit2.UserScriptInjectionTime.END
-    script_data = script_data.replace("'{{env}}'", json.dumps(env))
-    script = WebKit2.UserScript(script_data, frame, time, None, None)
+    time   = WebKit2.UserScriptInjectionTime.START
+
+    code = code.replace("'{{env}}'", json.dumps(env))
+    code = code.replace("{{uuid}}", webview.uuid)
+    code = code.replace("{{app_name}}", webview.app_name)
+    code = code.replace("{{app_version}}", webview.app_version)
+
+    script = WebKit2.UserScript(code, frame, time, None, None)
 
     self.manager.add_script(script)
 

usr/lib/python3/dist-packages/webengine/gtk3/_protocal.py

@@ -1,8 +1,13 @@
 
-import os
+import gi, os
+
+gi.require_version("WebKit2", "4.1")
 from gi.repository import Gio, WebKit2
-from ._mimetypes import get_mimetype
 
+from ._mimetypes import get_mimetype
+from ._version import version
+
+__dir__ = os.path.dirname(os.path.realpath(__file__))
 
 class Protocal:
   root = ''
@@ -22,29 +27,61 @@ class Protocal:
     return os.path.join(self.root, filepath)
 
 
+  def _get_error_page(self, tips = '404 not found!'):
+    data = f"""
+<!doctype html>
+<html lang="zh-CN">
+<head>
+  <meta charset="utf-8">
+  <title>Page not found</title>
+  <style>body {{text-align: center;-webkit-user-select:none}} cite {{font-size:12px}}</style>
+</head>
+<body>
+  <h1>Oops!</h1>
+  <h2>{tips}</h2>
+  <hr>
+  <cite>WebEngine v{version}</cite>
+</body>
+</html>
+    """
+    return data
+
   def handle_response(self, req):
     schema = req.get_scheme()
     pathname = req.get_path()[1:]
     ext = pathname.split('.')[-1]
+    mimetype = get_mimetype(ext)
+
+    if pathname == ext:
+      pathname = 'index.html'
 
     # print('----------------------------------------')
-    # print(req.get_uri(),schema, pathname, ext, get_mimetype(ext))
+    # print(req.get_uri(),schema, pathname, ext, mimetype)
     # print('----------------------------------------')
 
     if schema == self.protocal:
-      data = open(self.abspath(pathname)).read()
+      filepath = self.abspath(pathname)
+      if os.path.isfile(filepath):
+        try:
+          with open(filepath) as f:
+            data = f.read()
+        except Exception:
+          data = self._get_error_page('403 Forbidden!')
+      else:
+        data = self._get_error_page()
+
       data = Gio.MemoryInputStream.new_from_data(data.encode())
 
       # ------- 更多功能的reponse ----------------
       # res = WebKit2.URISchemeResponse.new(data, -1)
-      # res.set_content_type(get_mimetype(ext))
+      # res.set_content_type(mimetype)
       # res.set_http_headers('text/html')
       # res.set_status(200)
       # req.finish_with_response(res)
       # ----------------------------------------
       
       # 简单的response
-      req.finish(data, -1, get_mimetype(ext))
+      req.finish(data, -1, mimetype)
 
 
 def create_protocal(root):

usr/lib/python3/dist-packages/webengine/gtk3/_settings.py

@@ -6,8 +6,8 @@
 import gi, os
 
 gi.require_version("WebKit2", "4.1")
-
 from gi.repository import WebKit2
+
 from ._version import version
 
 
@@ -22,7 +22,7 @@ class Settings(WebKit2.Settings):
     self.set_javascript_can_open_windows_automatically(True)
 
 
-    self.set_user_agent_with_application_details('WebEngine', version)
+    self.set_useragent_with_app('WebEngine', version)
 
 
     # indexedDB 和 localStorage 和 离线缓存
@@ -43,6 +43,9 @@ class Settings(WebKit2.Settings):
     self.set_media_playback_allows_inline(True)
 
 
+  def set_useragent_with_app(self, name, ver):
+    self.set_user_agent_with_application_details(name, ver)
+
   def set_useragent(self, str):
     self.set_user_agent(str)
 
@@ -75,6 +78,9 @@ def create_setting(options = None):
       setting.enable_devtools()
       setting.mock_devices()
 
+    if options.get('app_name') and options.get('app_version'):
+      setting.set_useragent_with_app(options['app_name'], options['app_version'])
+
     if options.get('useragent'):
       setting.set_useragent(options.get('useragent'))
 
@@ -86,6 +92,9 @@ def create_setting(options = None):
 
 
   def wrapper(app, extra = None):
+    if options is not None:
+      app.app_name = options.get('app_name')
+      app.app_version = options.get('app_version')
     app.set_settings(setting)
 
   return wrapper

usr/lib/python3/dist-packages/webengine/gtk3/_utils.py

@@ -3,8 +3,12 @@
 # @author yutent<yutent.io@gmail.com>
 # @date 2023/07/28 14:39:33
 
-import gi
-from gi.repository.GdkPixbuf import Pixbuf
+import gi, threading
+gi.require_version('Gtk', '3.0')
+from gi.repository import GdkPixbuf, GObject
+
+def noop():
+  pass
 
 def get_monitor_info(monitor):
   return {
@@ -50,7 +54,7 @@ def pixbuf_to_dict(pixbuf, filename = ''):
 
 def dict_to_pixbuf(data):
   if data:
-    image = Pixbuf.new_from_data(
+    image = GdkPixbuf.Pixbuf.new_from_data(
       data = bytes(data['bytes']),
       colorspace = data['colorspace'],
       has_alpha = data['has_alpha'],
@@ -63,3 +67,33 @@ def dict_to_pixbuf(data):
     image = None
 
   return image
+
+
+# 定义一个异步修饰器, 用于在子线程中运行一些会阻塞主线程的任务
+def run_async(func):
+  def wrapper(*args, **kwargs):
+    thread = threading.Thread(target=func, args=args, kwargs=kwargs)
+    thread.daemon = True
+    thread.start()
+    return thread
+  return wrapper
+
+# 类型js的settimeout的修饰器
+def set_timeout(timeout = 0.5):
+  def decorator(callback):
+    def wrapper(*args):
+      t = threading.Timer(timeout, callback, args=args)
+      t.start()
+      return t
+    return wrapper
+  
+  return decorator
+
+
+# 定义一个修饰器, 用于将当前方法转到主线程中运行 (子线程中调用方法时)
+def idle(func):
+  def wrapper(*args):
+    GObject.idle_add(func, *args)
+  return wrapper
+
+

usr/lib/python3/dist-packages/webengine/gtk3/_version.py

@@ -1,4 +1,4 @@
 #!/usr/bin/env python3
 
-build = (0, 4, 0)
+build = (0, 7, 0)
 version = '.'.join(map(str, build))

usr/lib/python3/dist-packages/webengine/gtk3/_webengine.py

@@ -3,13 +3,15 @@
 # @date 2023/08/08 14:07:26
 
 
-import gi, os, json, shutil, hashlib, time, threading
+import gi, os, sys, json
+import webbrowser, shutil, hashlib, random
 
 gi.require_version('Gtk', '3.0')
 gi.require_version("WebKit2", "4.1")
 
 
 from gi.repository import GObject, Gtk, Gdk, WebKit2, GLib, Gio, GdkPixbuf
+from ._custom_window import create_same_window, create_custom_window
 
 
 # 优先尝试使用指示器, 没有再使用 Gtk.StatusIcon
@@ -30,56 +32,50 @@ try:
 except:
   Keybinder = None
 
-
-
-
-
+from ._env import env
+from ._version import version
 from ._settings import create_setting
 from ._protocal import create_protocal
 from ._notify import create_notify
 from ._inject import Inject
-from ._utils import get_monitor_info, pixbuf_to_dict, dict_to_pixbuf
+from ._utils import noop, get_monitor_info, pixbuf_to_dict, dict_to_pixbuf, run_async, idle
 
 
 
-env = {
-  "HOME_DIR": os.getenv('HOME'),
-  "CONFIG_DIR": os.path.join(os.getenv('HOME'), '.config'),
-  "CACHE_DIR": os.path.join(os.getenv('HOME'), '.cache')
-}
-
-
-def noop():
-  pass
-
-
-	# 类型js的settimeout的修饰器
-def set_timeout(timeout = 0.5):
-  def decorator(callback):
-    def wrapper(*args):
-      t = threading.Timer(timeout, callback, args=args)
-      t.start()
-      return t
-    return wrapper
-  
-  return decorator
-
-
 class WebEngine(WebKit2.WebView):
 
   __gsignals__ = {
     'quit': (GObject.SignalFlags.RUN_FIRST, None, ())
   }
-
+  app_name = 'WebEngine'
+  app_version = version
+  uuid = None
   root = None
   window = None
+  opener = None
+  children = set()
   custom_bridge = None
 
-  def __init__(self, window):
+  def __init__(self, win, opener = None, uuid = None):
 
     WebKit2.WebView.__init__(self)
 
-    self.window = window
+    if uuid is None:
+      self.uuid = random.randbytes(8).hex()
+    else:
+      self.uuid = uuid
+
+    self.opener = opener
+    self.window = win
+
+    if opener is not None:
+      opener.children.add(self)
+
+    if win.get_title() is None:
+      win.set_title(self.app_name)
+    
+    if win.get_icon() is None and win.get_icon_name() is None:
+      win.set_icon_name('web-browser')
 
     self.clipboard = Gtk.Clipboard.get(Gdk.SELECTION_CLIPBOARD)
     self.display = Gdk.Display.get_default()
@@ -98,24 +94,44 @@ class WebEngine(WebKit2.WebView):
 
     self.connect('create', self.create_new_window)
 
+    # 允许前端 widnow.close() 关闭窗口
+    self.connect('close', self.close_window)
+
+    # 通过外部关闭窗口时从父级中移除
+    win.connect("destroy", self.remove_from_opener)
+    win.connect('hide', lambda w: self.call_js('hide'))
+    win.connect('show', lambda w: self.call_js('show'))
 
 
+  def remove_from_opener(self, win = None):
+    if self.opener is not None:
+      try:
+        self.opener.children.remove(self)
+      except:
+        pass
 
+
+  def close_window(self, wv = None):
+    self.remove_from_opener()
+    self.window.close()
+
+
+  # 响应原生js的 window.open
   def create_new_window(self, webview, nav):
     req = nav.get_request()
-    w, h = self.window.get_size()
-    win = Gtk.Window()
-    web = WebEngine(win)
-    web.set_settings(self.get_settings())
-    web.set_zoom_level(self.get_zoom_level())
-    web.load_request(req)
-    win.set_default_size(w, h)
-    win.add(web)
-    win.show_all()
+    return create_same_window(self, req)
     
 
-  def set_root(self, root):
+  # 手动创建窗口
+  def new_window_by_custom(self, options = {}):
+    return create_custom_window(self, options)
+
+
+  def set_root(self, root, has_protocol = False):
     self.root = root
+
+    if has_protocol:
+      return self
     return self.use(create_protocal(root))
   
 
@@ -125,20 +141,28 @@ class WebEngine(WebKit2.WebView):
 
 
   def load(self, url = '/index.html'):
+    if url.startswith('http://') or url.startswith('https://'):
+      self.load_uri(url)
+    else:
       if self.root is None:
         raise EnvironmentError('web root dir not set!')
       else:
+        if url.startswith('/'):
           self.load_uri(f"app://{url}")
+        elif url.startswith('app://'):
+          self.load_uri(url)
+        else:
+          raise ValueError('url must starts with "/" or "app://"')
 
 
-
+  @idle
   def call_js(self, method, data = None, err = None):
     if err is not None:
       err = str(err)
     scripts = 'native.$emit("' + method + '", ' + json.dumps(err) + ', ' + json.dumps(data) + ')'
     self.evaluate_javascript(scripts, -1)
 
-  
+  @run_async
   def called_by_js(self, webview, message):
 
     data = json.loads(message.get_js_value().to_json(0))
@@ -151,21 +175,16 @@ class WebEngine(WebKit2.WebView):
 
 
     match event:
-      case 'init':
-        output = env
+
+      case 'app':
+        _error, output = self._app_handler(params)
 
       case 'fs':
-        _error, output = self._fs_setting(params)
+        _error, output = self._fs_handler(params)
 
 
       case 'clipboard':
-        _error, output = self._clipboard_setting(params)
-        
-        
-      # 退出app
-      case 'quit':
-        self.window.close()
-        self.emit('quit')
+        _error, output = self._clipboard_handler(params)
         
       # 读取图片, 返回图片像素数据
       case 'image':
@@ -185,7 +204,7 @@ class WebEngine(WebKit2.WebView):
 
 
       case 'keybinder':
-        _error, output = self._keybinder_setting(params)
+        _error, output = self._keybinder_handler(params)
         
 
       case 'tray':
@@ -195,8 +214,37 @@ class WebEngine(WebKit2.WebView):
         elif params['action'] == 'remove':
           pass
 
+      case 'opener':
+        callback = 'opener_message'
+        output = params.get('data')
+        uuid = json.dumps(self.uuid if self.opener else None)
+        scripts = f"native.$emit('opener_message', {json.dumps(output)}, {uuid})"
+        if self.opener is None:
+          self.evaluate_javascript(scripts, -1)
+        else:
+          self.opener.evaluate_javascript(scripts, -1)
+        return
+      
+      case 'children':
+        callback = 'opener_message'
+        output = params.get('data')
+        uuid = params.get('uuid')
+        scripts = f"native.$emit('opener_message', {json.dumps(output)})"
+        if len(self.children) == 0:
+          self.evaluate_javascript(scripts, -1)
+        else:
+          if uuid is None:
+            for child in self.children:
+              child.evaluate_javascript(scripts, -1)
+          else:
+            for child in self.children:
+              if child.uuid == uuid:
+                child.evaluate_javascript(scripts, -1)
+                break
+        return
+
       case 'window':
-        _error, output = self._window_setting(params)
+        _error, output = self._window_handler(params)
 
 
       case 'notify':
@@ -213,25 +261,61 @@ class WebEngine(WebKit2.WebView):
 
 
       case 'proxy':
-        _error, output = self._proxy_setting(params)
+        _error, output = self._proxy_handler(params)
 
 
       case 'md5':
         output = hashlib.md5(str(params.get('value'))).hexdigest()
 
       case _:
-        if self.custom_bridge is None:
-          pass
-        else:
-          _error, output = self.custom_bridge(event, params)
+        if self.custom_bridge is not None:
+          try:
+            _error, output = self.custom_bridge(event, params) or (None, None)
+          except Exception as err:
+            print(err)
+            _error = err
 
     # 有回调则返回结果
     if callback:
       self.call_js(callback, output, _error)
       
 
+  def _app_handler(self, params = {}):
+    _error = None
+    output = None
+    match(params.get('action')):
+      # 退出app
+      case 'quit':
+        self.close_window()
+        self.emit('quit')
 
-  def _fs_setting(self, params = {}):
+      case 'relaunch':
+        py = sys.executable
+        os.execl(py, py, *sys.argv)
+
+    return (_error, output)
+
+  def _shell_handler(self, params = {}):
+    _error = None
+    output = None
+    path = params.get('path')
+
+    match(params.get('action')):
+      case 'openExternal':
+        webbrowser.open(params.get('url'))
+
+      case 'showItemInFolder':
+        os.system(f"xdg-open '{path}'")
+
+      case 'openPath':
+        os.system(f"xdg-open '{path}'")
+
+      case 'trashItem':
+        pass
+
+
+
+  def _fs_handler(self, params = {}):
     _error = None
     output = None
     filepath = params.get('filepath')
@@ -301,11 +385,14 @@ class WebEngine(WebKit2.WebView):
       case 'isdir':
         output = os.path.isdir(filepath)
 
+      case 'mkdir':
+        output = os.makedirs(filepath)
+
     return (_error, output)
 
 
 
-  def _clipboard_setting(self, params = {}):
+  def _clipboard_handler(self, params = {}):
     _error = None
     output = None
 
@@ -342,7 +429,7 @@ class WebEngine(WebKit2.WebView):
     return (_error, output)
 
 
-  def _keybinder_setting(self, params = {}):
+  def _keybinder_handler(self, params = {}):
     _error = None
     output = None
     keymap = params.get('value')
@@ -373,11 +460,18 @@ class WebEngine(WebKit2.WebView):
 
 
 
-  def _window_setting(self, params = {}):
+  def _window_handler(self, params = {}):
     _error = None
     output = None
 
     match(params.get('action')):
+
+      case 'create':
+        self.new_window_by_custom(params.get('options'))
+
+      case 'close':
+        self.close_window()
+
       case 'fullscreen':
         self.window.fullscreen()
 
@@ -428,7 +522,7 @@ class WebEngine(WebKit2.WebView):
 
 
 
-  def _proxy_setting(self, params = {}):
+  def _proxy_handler(self, params = {}):
     dm = self.get_website_data_manager()
     output = True
     _error = None
@@ -445,3 +539,4 @@ class WebEngine(WebKit2.WebView):
         output = False
     return (_error, output)
 
+

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',
@@ -45,6 +45,11 @@ const KEYS_MAP = {
     super: '<Super>'
   }
 
+  const NO_CALLBACK = false
+  const CALL_ONCE = true
+
+  const __events__ = Symbol('events')
+
   function defer() {
     let obj = {}
     obj.promise = new Promise((resolve, reject) => {
@@ -58,22 +63,23 @@ function rand(prefix = 'cb_') {
     return prefix + Math.random().toString().slice(2)
   }
 
-function handler(event, data = {}, once = true) {
+  function handler(event, data = {}, need = CALL_ONCE) {
     let _ = defer()
     let callback
 
-  if (typeof once === 'boolean') {
+    if (need === NO_CALLBACK) {
+      _.resolve(true)
+    } else {
       callback = rand()
-    native[once ? '$once' : '$on'](callback, (err, res) => {
+      native.$once(callback, (err, res) => {
         if (err) {
-        _.reject(err)
+          _.reject(new Error(err))
         } else {
           _.resolve(res)
         }
       })
-  } else {
-    _.resolve(true)
     }
+
     window.webkit.messageHandlers.app.postMessage({
       event,
       data,
@@ -86,6 +92,34 @@ function base64(str = '') {
     return btoa(str).replace(/[+=\/]/g, '')
   }
 
+  function _postMessage(data = {}, uuid = null) {
+    let ev = new Event('message')
+    Object.assign(ev, {
+      data,
+      source: {
+        postMessage(msg) {
+          native.children.postMessage(msg, uuid)
+        }
+      }
+    })
+    window.dispatchEvent(ev)
+  }
+
+  function readonly(obj, key, value) {
+    Object.defineProperty(obj, key, {
+      get() {
+        return value
+      },
+      enumerable: false
+    })
+  }
+
+  function _extend(origin, options = {}) {
+    for (let k in options) {
+      readonly(origin, k, options[k])
+    }
+  }
+
   class NativeImage {
     #origin
 
@@ -139,15 +173,15 @@ class NativeImage {
     }
   }
 
-class EventEmitter {
+  class Native {
     //
-  __events__ = Object.create(null)
+    [__events__] = Object.create(null)
 
     $on(name, fn) {
-    if (this.__events__[name]) {
-      this.__events__[name].push(fn)
+      if (this[__events__][name]) {
+        this[__events__][name].push(fn)
       } else {
-      this.__events__[name] = [fn]
+        this[__events__][name] = [fn]
       }
     }
 
@@ -157,18 +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]) {
-      for (let fn of this.__events__[name]) {
+      if (this[__events__][name]) {
+        for (let fn of this[__events__][name]) {
           try {
             fn.apply(this, args)
             if (fn.__once__) {
@@ -182,17 +218,34 @@ class EventEmitter {
     }
 
     $destroy() {
-    this.__events__ = Object.create(null)
+      this[__events__] = Object.create(null)
     }
   }
 
-window.native = new EventEmitter()
+  readonly(window, 'native', new Native())
 
-Object.assign(native, {
+  native.$on('opener_message', (data, uuid) => _postMessage(data, uuid))
+
+  _extend(native, {
     env: '{{env}}',
-
+    app: {
+      name: '{{app_name}}',
+      version: '{{app_version}}',
       quit() {
-    return handler('quit', {}, null)
+        return handler('app', { action: 'quit' }, NO_CALLBACK)
+      },
+      relaunch() {
+        return handler('app', { action: 'relaunch' }, NO_CALLBACK)
+      },
+      getLocale() {
+        return native.env.LANG
+      }
+    },
+    shell: {
+      openExternal(url) {},
+      showItemInFolder(path) {},
+      openPath(path) {},
+      trashItem(path) {}
     },
     fs: {
       access(filepath, mode = 'r') {
@@ -240,6 +293,9 @@ Object.assign(native, {
       },
       copy(filepath, target) {
         return handler('fs', { action: 'copy', filepath, target })
+      },
+      mkdir(filepath) {
+        return handler('fs', { action: 'mkdir', filepath })
       }
     },
     image(filepath) {
@@ -250,7 +306,7 @@ Object.assign(native, {
         return handler('clipboard', { action: 'wait_for_text' })
       },
       writeText(value) {
-      return handler('clipboard', { action: 'set_text', value }, null)
+        return handler('clipboard', { action: 'set_text', value }, NO_CALLBACK)
       },
       readImage() {
         return handler('clipboard', { action: 'wait_for_image' }).then(r =>
@@ -262,10 +318,10 @@ Object.assign(native, {
         if (typeof value === 'object') {
           value = value.toJSON()
         }
-      return handler('clipboard', { action: 'set_image', value }, null)
+        return handler('clipboard', { action: 'set_image', value }, NO_CALLBACK)
       },
       clear() {
-      return handler('clipboard', { action: 'clear' })
+        return handler('clipboard', { action: 'clear' }, NO_CALLBACK)
       }
     },
     screen: {
@@ -338,48 +394,87 @@ Object.assign(native, {
         return handler('tray', { action: 'set_status', value: status })
       }
     },
+    opener: {
+      postMessage(data = {}) {
+        return handler('opener', { action: 'postmessage', data }, NO_CALLBACK)
+      }
+    },
+    children: {
+      postMessage(data = {}, uuid = null) {
+        return handler(
+          'children',
+          { action: 'postmessage', data, uuid },
+          NO_CALLBACK
+        )
+      }
+    },
     window: {
+      uuid: '{{uuid}}',
+      create(options = {}) {
+        return handler('window', { action: 'create', options })
+      },
+
+      close() {
+        return handler('window', { action: 'close' })
+      },
+
       isVisible() {
         return handler('window', { action: 'is_visible' })
       },
       toggleVisible() {
-      handler('window', { action: 'toggle_visible' }, null)
+        handler('window', { action: 'toggle_visible' }, NO_CALLBACK)
       },
       hide() {
-      handler('window', { action: 'hide' }, null)
+        handler('window', { action: 'hide' }, NO_CALLBACK)
       },
       show() {
-      handler('window', { action: 'show' }, null)
+        handler('window', { action: 'show' }, NO_CALLBACK)
       },
       fullscreen() {
-      handler('window', { action: 'fullscreen' }, null)
+        handler('window', { action: 'fullscreen' }, NO_CALLBACK)
       },
       unfullscreen() {
-      handler('window', { action: 'unfullscreen' }, null)
+        handler('window', { action: 'unfullscreen' }, NO_CALLBACK)
       },
       maximize() {
-      handler('window', { action: 'maximize' }, null)
+        handler('window', { action: 'maximize' }, NO_CALLBACK)
       },
       unmaximize() {
-      handler('window', { action: 'unmaximize' }, null)
+        handler('window', { action: 'unmaximize' }, NO_CALLBACK)
       },
       setTitle(title = '') {
-      handler('window', { action: 'set_title', value: title }, null)
+        handler('window', { action: 'set_title', value: title }, NO_CALLBACK)
       },
       resize(width = 0, height = 0) {
-      handler('window', { action: 'resize', value: { width, height } }, null)
+        handler(
+          'window',
+          { action: 'resize', value: { width, height } },
+          NO_CALLBACK
+        )
       },
       move(x = 0, y = 0) {
-      handler('window', { action: 'resize', value: { x, y } }, null)
+        handler('window', { action: 'move', value: { x, y } }, NO_CALLBACK)
       },
       setOpacity(opacity = 1) {
-      handler('window', { action: 'set_opacity', value: opacity }, null)
+        handler(
+          'window',
+          { action: 'set_opacity', value: opacity },
+          NO_CALLBACK
+        )
       },
       alwayOnTop(setting = true) {
-      handler('window', { action: 'set_keep_above', value: setting }, null)
+        handler(
+          'window',
+          { action: 'set_keep_above', value: setting },
+          NO_CALLBACK
+        )
       },
       alwayOnBotttom(setting = true) {
-      handler('window', { action: 'set_keep_below', value: setting }, null)
+        handler(
+          'window',
+          { action: 'set_keep_below', value: setting },
+          NO_CALLBACK
+        )
       }
     },
     notify({ title, summary, icon, progress = 0, urgency = 0, callback }) {
@@ -391,7 +486,7 @@ Object.assign(native, {
       handler(
         'notify',
         { title, summary, icon, progress, urgency, callback: eventName },
-      null
+        NO_CALLBACK
       )
     },
 
@@ -401,15 +496,16 @@ Object.assign(native, {
 
     proxy: {
       disable() {
-      return handler('proxy', { action: 'disable' })
+        return handler('proxy', { action: 'disable' }, NO_CALLBACK)
       },
       system() {
-      return handler('proxy', { action: 'system' })
+        return handler('proxy', { action: 'system' }, NO_CALLBACK)
       },
       custom(url = '', ignore = null) {
-      return handler('proxy', { action: 'enable', url, ignore })
+        return handler('proxy', { action: 'enable', url, ignore }, NO_CALLBACK)
       }
     },
 
     handler
   })
+})()