js注入改为开始时注入, 窗口增加hide和show 2个回调

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

@@ -17,7 +17,7 @@ class Inject:
         
     code = open(self.abspath('./inject.js'), 'r').read()
     frame  = WebKit2.UserContentInjectedFrames.ALL_FRAMES
-    time   = WebKit2.UserScriptInjectionTime.END
+    time   = WebKit2.UserScriptInjectionTime.START
 
     code = code.replace("'{{env}}'", json.dumps(env))
     code = code.replace("{{uuid}}", webview.uuid)

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

@@ -96,7 +96,11 @@ class WebEngine(WebKit2.WebView):
 
     # 允许前端 widnow.close() 关闭窗口
     self.connect('close', self.close_window)
-    win.connect("destroy", self.remove_from_opener) # 通过外部关闭窗口时从父级中移除
+
+    # 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):