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In GENERIC builds, dispatch a "webviewerloaded" event (from the webViewerLoad function) before initializing the viewer

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With the removal of the global `PDFJS` object, in PDF.js version `2.0`, the viewer options are no longer as easily accessible as they previously were (and issues have been filed about this).
In particular, since the viewer files aren't necessarily loaded *immediately*, this means that `PDFViewerApplication`/`PDFViewerApplicationOptions` aren't necessarily available directly. By dispatching an event once all viewer files are loaded but *before* the viewer initialization has run, setting `AppOptions` during load (in custom implementations of the default viewer) should hopefully become a little bit easier[1].

---
[1] In hindsight, this should probably have been implemented when the global `PDFJS` object was removed...
This commit is contained in:
Jonas Jenwald 2018-11-29 11:32:48 +01:00
parent d9743e462d
commit 0dc995c7e0
1 changed files with 10 additions and 0 deletions
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10
web/viewer.js
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@ -203,6 +203,16 @@ function webViewerLoad() {
window.PDFViewerApplication = pdfjsWebApp.PDFViewerApplication;
window.PDFViewerApplicationOptions = pdfjsWebAppOptions.AppOptions;
if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('GENERIC')) {
// Give custom implementations of the default viewer a simpler way to
// set various `AppOptions`, by dispatching an event once all viewer
// files are loaded but *before* the viewer initialization has run.
const event = document.createEvent('CustomEvent');
event.initCustomEvent('webviewerloaded', true, true, {});
document.dispatchEvent(event);
}
pdfjsWebApp.PDFViewerApplication.run(config);
}
}