Sakurai/pdf.js
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Merge pull request #13220 from Snuffleupagus/currentOutlineItemPromise-isPagesLoaded

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Ensure that `currentOutlineButton` enabling/disabling won't depend on the exact timing of the "pagesloaded" event (PR 13212 follow-up)
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Tim van der Meij 2021-04-11 18:30:17 +02:00 committed by GitHub
commit daf4cd0f78
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1 changed files with 7 additions and 3 deletions
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web/pdf_outline_viewer.js
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@ -54,13 +54,15 @@ class PDFOutlineViewer extends BaseTreeViewer {
this.eventBus._on("pagesloaded", evt => { this.eventBus._on("pagesloaded", evt => {
this._isPagesLoaded = !!evt.pagesCount; this._isPagesLoaded = !!evt.pagesCount;
// If the capability is still pending, note the `_dispatchEvent`-method, // If the capability is still pending, see the `_dispatchEvent`-method,
// we know that the `currentOutlineItem`-button should be enabled here. // we know that the `currentOutlineItem`-button can be enabled here.
if ( if (
this._currentOutlineItemCapability && this._currentOutlineItemCapability &&
!this._currentOutlineItemCapability.settled !this._currentOutlineItemCapability.settled
) { ) {
this._currentOutlineItemCapability.resolve(/* enabled = */ true); this._currentOutlineItemCapability.resolve(
/* enabled = */ this._isPagesLoaded
);
} }
}); });
this.eventBus._on("sidebarviewchanged", evt => { this.eventBus._on("sidebarviewchanged", evt => {
@ -95,6 +97,8 @@ class PDFOutlineViewer extends BaseTreeViewer {
this._pdfDocument?.loadingParams.disableAutoFetch this._pdfDocument?.loadingParams.disableAutoFetch
) { ) {
this._currentOutlineItemCapability.resolve(/* enabled = */ false); this._currentOutlineItemCapability.resolve(/* enabled = */ false);
} else if (this._isPagesLoaded) {
this._currentOutlineItemCapability.resolve(/* enabled = */ true);
} }
this.eventBus.dispatch("outlineloaded", { this.eventBus.dispatch("outlineloaded", {