monaco edit内容的链接点击问题

[gaoconggit]

monaco edit内容的链接点击后在webview 中打开了
@claude 分析一下这个问题

[claude]

Claude finished @gaoconggit's task —— View job • claude/issue-62-20251017-1129 • Create PR ➔

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Analysis Complete

Issue: Links in Monaco editor content were opening within the WebView instead of in an external browser.

Root Cause

The OnNavigationStarting event handler in SharpPad.Desktop/Views/MainWindow.axaml.cs:20 was empty. When users clicked links in Monaco editor content, the WebView would navigate to those URLs internally instead of opening them in the default browser.

Solution Implemented

I've implemented the OnNavigationStarting handler to:

1. Detect external links: Compare the navigation URL with the app's base URL (localhost:port)
2. Cancel internal navigation: Prevent the WebView from loading external URLs
3. Open in default browser: Use Process.Start with UseShellExecute to open links in the system's default browser

Changes Made

File Modified: SharpPad.Desktop/Views/MainWindow.axaml.cs

The handler now:

• Extracts the app's base URL from the ViewModel
• Converts the navigation URL to a string for comparison
• Uses Uri.TryCreate to safely parse both URLs
• Compares the host and scheme to determine if the link is external
• If external: cancels navigation and opens in default browser
• If internal: allows normal navigation to proceed

Testing

• ✅ Build succeeded with no errors or warnings
• ✅ Changes committed and pushed to branch

Next Steps

Please review and test the fix:

1. Click on any external links in Monaco editor content
2. Verify they open in your default browser instead of the WebView
3. Verify internal navigation (within the app) still works normally

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