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[api-minor] Move the page reference/number caching into the API

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Rather than having to handle this *manually* throughout the viewer, this functionality can instead be moved into the API which simplifies the code slightly.
This commit is contained in:
Jonas Jenwald 2024-04-24 21:55:50 +02:00
parent fa69d9a3bc
commit f6cd03955b
6 changed files with 42 additions and 74 deletions
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19
web/pdf_outline_viewer.js
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@ -325,21 +325,10 @@ class PDFOutlineViewer extends BaseTreeViewer {
if (Array.isArray(explicitDest)) {
const [destRef] = explicitDest;
if (typeof destRef === "object" && destRef !== null) {
pageNumber = this.linkService._cachedPageNumber(destRef);
if (!pageNumber) {
try {
pageNumber = (await pdfDocument.getPageIndex(destRef)) + 1;
if (pdfDocument !== this._pdfDocument) {
return null; // The document was closed while the data resolved.
}
this.linkService.cachePageRef(pageNumber, destRef);
} catch {
// Invalid page reference, ignore it and continue parsing.
}
}
if (destRef && typeof destRef === "object") {
// The page reference must be available, since the current method
// won't be invoked until all pages have been loaded.
pageNumber = pdfDocument.cachedPageNumber(destRef);
} else if (Number.isInteger(destRef)) {
pageNumber = destRef + 1;
}