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[api-minor] Add a basic AbortSignal.any polyfill in PDF.js legacy builds

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This is an admittedly very basic polyfill, to allow us to remove a bunch of inline feature testing, that I've thrown together based on reading https://developer.mozilla.org/en-US/docs/Web/API/AbortSignal/any_static and related MDN articles.

Compared to PR 19218 it's obviously much more "primitive", however the implementation is simple and it doesn't suffer from any licensing issues (since I wrote the code myself).
This commit is contained in:
Jonas Jenwald 2025-03-18 10:54:49 +01:00
parent 00e3a4d87a
commit 028e4f7ea8
3 changed files with 42 additions and 30 deletions
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27
web/app.js
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@ -559,11 +559,7 @@ const PDFViewerApplication = {
}
if (appConfig.annotationEditorParams) {
if (
((typeof PDFJSDev !== "undefined" && PDFJSDev.test("MOZCENTRAL")) ||
typeof AbortSignal.any === "function") &&
annotationEditorMode !== AnnotationEditorType.DISABLE
) {
if (annotationEditorMode !== AnnotationEditorType.DISABLE) {
const editorSignatureButton = appConfig.toolbar?.editorSignatureButton;
if (editorSignatureButton && AppOptions.get("enableSignatureEditor")) {
editorSignatureButton.parentElement.hidden = false;
@ -2075,19 +2071,14 @@ const PDFViewerApplication = {
_windowAbortController: { signal },
} = this;
if (
(typeof PDFJSDev !== "undefined" && PDFJSDev.test("MOZCENTRAL")) ||
typeof AbortSignal.any === "function"
) {
this._touchManager = new TouchManager({
container: window,
isPinchingDisabled: () => pdfViewer.isInPresentationMode,
isPinchingStopped: () => this.overlayManager?.active,
onPinching: this.touchPinchCallback.bind(this),
onPinchEnd: this.touchPinchEndCallback.bind(this),
signal,
});
}
this._touchManager = new TouchManager({
container: window,
isPinchingDisabled: () => pdfViewer.isInPresentationMode,
isPinchingStopped: () => this.overlayManager?.active,
onPinching: this.touchPinchCallback.bind(this),
onPinchEnd: this.touchPinchEndCallback.bind(this),
signal,
});
function addWindowResolutionChange(evt = null) {
if (evt) {