Add PDFJS.abortGetDocument function to enable cancelling of calls to PDFJS.getDocument #5234
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this might also fix #4774 - a colleague was able to reproduce it, if you make a preview we can try to verify. |
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Currently when an exception is thrown, we try to reject `workerReadyCapability` with multiple arguments in src/core/api.js. This obviously doesn't work, hence this patch changes that to instead reject with the exception object as is. In src/core/worker.js the exception is currently (unncessarily) wrapped in an object, so this patch also simplifies that to directly send the exception object instead.
…PDFJS.getDocument
…itsForPromiseResolved`and add a `waitsForPromiseRejected` function
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#5275 was merged, you can rebase this now. |
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Blocked by #5554 |
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This PR contains a tentative patch to fix #3485 (and should also fix #5228, #4774).
I was slightly unsure of the best way to handle the rejection of
workerReadyCapability, since it's not easily available outside ofgetDocumentand I didn't just want to expose it inPDFJS.A caveat with this patch is that it's only possible to abort the current
getDocument, so if you have multiple ones active simultaneously this isn't going to work. Since this implementation should work fine when used in the generic viewer (e.g. for #5228), I don't know if it's really worth complicating the solution too much.One other thing to note here:
abortGetDocumentreally only makes sense whengetDocumentisn't resolved/rejected yet, since otherwise just callingdestroyis enough.When I started looking at this, I realized that our current exception handling code wasn't really working as intended (rejection with multiple arguments). The first commit fixes this, and I'd be happy to extract that into a separate PR if that's preferred.Submitted as a separate PR.@yurydelendik Please let me know if this PR heading in the right direction, or if you'd prefer a different/modified solution!