[CEF] fix master uid not found

docs/examples/on_top.md

@@ -1,21 +1,22 @@
 # Topmost window
 
-Create a window that stays on top of, or in front of, other windows.
+Create a window that stays on top of other windows.
 
 ``` python
-import pywebview
+import webview
 import time
 
+
 def deactivate(window):
-    #window starts on top and is changed later
-    time.sleep(5)
+    #window starts as on top of and reverts back to normal after 20 seconds
+    time.sleep(20)
     window.on_top = False
+    window.load_html("<h1>This window is no longer on top of other windows</h1>")
 
 
 if __name__ == '__main__':
-    # Create webview window that stays on top of, or in front of, all other windows
-    window = webview.create_window('Topmost window',
-                          'https://pywebview.flowrl.com/hello',
+    # Create webview window that stays on top of, all other windows
+    window = webview.create_window('Topmost window', html="<h1>This window is on top of other windows</h1>",
                           on_top=True)
     webview.start(deactivate, window)
 ```

examples/on_top.py

@@ -6,14 +6,14 @@
 """
 
 def deactivate(window):
-    #window starts on top and is changed later
-    time.sleep(5)
+    #window starts as on top of and reverts back to normal after 20 seconds
+    time.sleep(20)
     window.on_top = False
+    window.load_html("<h1>This window is no longer on top of other windows</h1>")
 
 
 if __name__ == '__main__':
-    # Create webview window that stays on top of, or in front of, all other windows
-    window = webview.create_window('Topmost window',
-                          'https://pywebview.flowrl.com/hello',
+    # Create webview window that stays on top of, all other windows
+    window = webview.create_window('Topmost window', html="<h1>This window is on top of other windows</h1>",
                           on_top=True)
     webview.start(deactivate, window)

webview/platforms/cef.py

@@ -258,9 +258,10 @@ def _create():
 
         cef_browser.SetJavascriptBindings(bindings)
         cef_browser.SetClientHandler(LoadHandler())
-
         instances[window.uid] = browser
         window.events.shown.set()
+        cef_browser.SendFocusEvent(True)
+
 
     window_info = cef.WindowInfo()
     window_info.SetAsChild(handle)

webview/platforms/winforms.py

@@ -238,10 +238,9 @@ def on_activated(self, sender, args):
                 CEF.focus(self.uid)
 
         def on_shown(self, sender, args):
-            if is_cef:
-                CEF.focus(self.uid)
-            else:
-                self.shown.set()
+            self.shown.set()
+
+            if not is_cef:
                 self.browser.web_view.Focus()
 
         def on_close(self, sender, args):