48 lines
2.3 KiB
JavaScript
48 lines
2.3 KiB
JavaScript
"use strict";
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// Configure the upstream generic viewer before its application starts.
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const target = window.parent.document;
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function configureViewer(event) {
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if (event.detail?.source !== window) return;
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const options = window.PDFViewerApplicationOptions;
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const app = window.PDFViewerApplication;
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const file = new URLSearchParams(location.search).get("file") || "";
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const match = file.match(/^\/api\/documents\/([a-f0-9]{32})\/content(?:\?v=[a-f0-9]{16})?$/);
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if (!match) history.replaceState({}, "", location.pathname + "?file=");
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options.setAll({
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defaultUrl: "", disablePreferences: true, disableHistory: true,
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localeProperties: {lang: "de"}, viewerCssTheme: 1,
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enableScripting: false, annotationEditorMode: -1, annotationMode: 1,
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enableComment: false, enableAltText: false, enableGuessAltText: false,
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enableAltTextModelDownload: false, enableHighlightFloatingButton: false,
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enableWebGPU: false, defaultZoomValue: "page-width",
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});
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// Downloads use the original endpoint and its fresh access checks.
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const download = async () => {
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if (!match) return;
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const link = document.createElement("a");
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link.href = `/api/documents/${match[1]}/download`;
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link.download = app._docFilename || "";
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document.body.append(link); link.click(); link.remove();
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};
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app.download = app.save = app.downloadOrSave = download;
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const run = app.run.bind(app);
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app.run = async config => {
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await run(config);
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if (app._openFileInput) app._openFileInput.disabled = true;
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};
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const open = app.open.bind(app);
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app.open = async args => {
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if (!match || args?.url !== file) return;
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try { await open(args); }
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catch (error) {
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// PDF.js already shows these loading errors. Revocation is handled by
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// the parent dialog's permission refresh, rather than an unhandled promise.
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if (!["ResponseException", "InvalidPDFException", "PasswordException", "UnknownErrorException", "AbortException"].includes(error.name)) throw error;
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}
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};
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}
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target.addEventListener("webviewerloaded", configureViewer);
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window.addEventListener("pagehide", () => target.removeEventListener("webviewerloaded", configureViewer), {once: true});
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document.addEventListener("drop", event => { event.preventDefault(); event.stopImmediatePropagation(); }, true);
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