| <!DOCTYPE html> |
| <html> |
| <head> |
| <style> |
| body, html, iframe { |
| width: 100%; |
| height: 100%; |
| margin: 0; |
| } |
| |
| iframe { |
| border: 0; |
| } |
| |
| #space { |
| width: 200px; |
| height: 200px; |
| } |
| |
| </style> |
| <script> |
| loaded = false; |
| notifyBrowser = null; |
| function notifyWhenLoaded() { |
| if (loaded) |
| return "OUTER_LOADED"; |
| return new Promise(resolve => { |
| window.notifyBrowser = resolve; |
| }); |
| } |
| window.addEventListener('load', () => { |
| window.loaded = true; |
| if (window.notifyBrowser) |
| window.notifyBrowser('OUTER_LOADED'); |
| }); |
| </script> |
| </head> |
| <body> |
| <div id="space"></div> |
| <iframe src="input_box.html" > |
| |
| </body> |
| </html> |
