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[GeckoView] Avoid unused outline, attachments, and layers fetching

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Currently there's no UI for this functionality in the GV-viewer, however we still call the API methods. This potentially leads to a bunch of worker-thread parsing, for PDF documents with these features, despite the result being completely unused.
Given that mobile devices are usually more resource constrained than desktop/laptop computers, not to mentioned battery life, we can avoid doing work that'll just be ignored anyway.
This commit is contained in:
Jonas Jenwald 2023-02-07 12:30:05 +01:00
parent 05d821e680
commit 0cf4fbd471
1 changed files with 26 additions and 20 deletions
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46
web/app.js
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@ -1336,26 +1336,32 @@ const PDFViewerApplication = {
timestamp: data.timestamp,
});
pdfDocument.getOutline().then(outline => {
if (pdfDocument !== this.pdfDocument) {
return; // The document was closed while the outline resolved.
}
this.pdfOutlineViewer?.render({ outline, pdfDocument });
});
pdfDocument.getAttachments().then(attachments => {
if (pdfDocument !== this.pdfDocument) {
return; // The document was closed while the attachments resolved.
}
this.pdfAttachmentViewer?.render({ attachments });
});
// Ensure that the layers accurately reflects the current state in the
// viewer itself, rather than the default state provided by the API.
pdfViewer.optionalContentConfigPromise.then(optionalContentConfig => {
if (pdfDocument !== this.pdfDocument) {
return; // The document was closed while the layers resolved.
}
this.pdfLayerViewer?.render({ optionalContentConfig, pdfDocument });
});
if (this.pdfOutlineViewer) {
pdfDocument.getOutline().then(outline => {
if (pdfDocument !== this.pdfDocument) {
return; // The document was closed while the outline resolved.
}
this.pdfOutlineViewer.render({ outline, pdfDocument });
});
}
if (this.pdfAttachmentViewer) {
pdfDocument.getAttachments().then(attachments => {
if (pdfDocument !== this.pdfDocument) {
return; // The document was closed while the attachments resolved.
}
this.pdfAttachmentViewer.render({ attachments });
});
}
if (this.pdfLayerViewer) {
// Ensure that the layers accurately reflects the current state in the
// viewer itself, rather than the default state provided by the API.
pdfViewer.optionalContentConfigPromise.then(optionalContentConfig => {
if (pdfDocument !== this.pdfDocument) {
return; // The document was closed while the layers resolved.
}
this.pdfLayerViewer.render({ optionalContentConfig, pdfDocument });
});
}
});
this._initializePageLabels(pdfDocument);