| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>Test the File System Access API during prerendering</title> |
| </head> |
| <body> |
| <script> |
| |
| const eventsSeen = []; |
| |
| let resolveFunc; |
| let rejectFunc; |
| |
| document.addEventListener('prerenderingchange', () => { |
| eventsSeen.push( |
| `prerenderingchange (prerendering: ${document.prerendering})`); |
| }); |
| |
| const result = new Promise((resolve, reject) => { |
| resolveFunc = resolve; |
| rejectFunc = reject; |
| }); |
| |
| async function accessOriginPrivateFileSystem() { |
| try { |
| // The page should initially be in the prerendering state. |
| eventsSeen.push( |
| `accessOriginPrivateFileSystem (prerendering: ${document.prerendering})`); |
| |
| const directoryHandle = await navigator.storage.getDirectory(); |
| |
| // `navigator.storage.getDirectory()` is expected to be deferred until the prerendered |
| // page is activated. So `document.prerendering` should be false here. |
| eventsSeen.push( |
| `getDirectory (prerendering: ${document.prerendering})`); |
| |
| resolveFunc(true); |
| } catch (err) { |
| rejectFunc(err); |
| } |
| } |
| |
| function runLoop() { |
| return new Promise(resolve => { |
| setTimeout(resolve, 0); |
| }); |
| } |
| |
| </script> |
| </body> |
| </html> |
