Sakurai/pdf.js
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Slightly re-factor preferences/options initialization in the viewer

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Given that the debugging hash-parameters will only be used when the `pdfBugEnabled` option is manually set[1], we can skip a *tiny* bit of asynchronicity for "regular" users.

---
[1] Note that it's enabled by default in the development viewer, i.e. in `gulp server` mode.
This commit is contained in:
Jonas Jenwald 2023-02-10 15:45:39 +01:00
parent 6c158da5a8
commit 0e070c805e
1 changed files with 15 additions and 12 deletions
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27
web/app.js
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@ -233,8 +233,7 @@ const PDFViewerApplication = {
this.preferences = this.externalServices.createPreferences();
this.appConfig = appConfig;
await this._readPreferences();
await this._parseHashParameters();
await this._initializeOptions();
this._forceCssTheme();
await this._initializeL10n();
@ -267,16 +266,19 @@ const PDFViewerApplication = {
/**
* @private
*/
async _readPreferences() {
async _initializeOptions() {
if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
if (AppOptions.get("disablePreferences")) {
if (AppOptions.get("pdfBugEnabled")) {
await this._parseHashParams();
}
// Give custom implementations of the default viewer a simpler way to
// opt-out of having the `Preferences` override existing `AppOptions`.
return;
}
if (AppOptions._hasUserOptions()) {
console.warn(
"_readPreferences: The Preferences may override manually set AppOptions; " +
"_initializeOptions: The Preferences may override manually set AppOptions; " +
'please use the "disablePreferences"-option in order to prevent that.'
);
}
@ -284,7 +286,11 @@ const PDFViewerApplication = {
try {
AppOptions.setAll(await this.preferences.getAll());
} catch (reason) {
console.error(`_readPreferences: "${reason?.message}".`);
console.error(`_initializeOptions: "${reason.message}".`);
}
if (AppOptions.get("pdfBugEnabled")) {
await this._parseHashParams();
}
},
@ -292,10 +298,7 @@ const PDFViewerApplication = {
* Potentially parse special debugging flags in the hash section of the URL.
* @private
*/
async _parseHashParameters() {
if (!AppOptions.get("pdfBugEnabled")) {
return;
}
async _parseHashParams() {
const hash = document.location.hash.substring(1);
if (!hash) {
return;
@ -312,7 +315,7 @@ const PDFViewerApplication = {
try {
await loadFakeWorker();
} catch (ex) {
console.error(`_parseHashParameters: "${ex.message}".`);
console.error(`_parseHashParams: "${ex.message}".`);
}
}
if (params.has("disablerange")) {
@ -352,7 +355,7 @@ const PDFViewerApplication = {
await loadPDFBug(this);
this._PDFBug.loadCSS();
} catch (ex) {
console.error(`_parseHashParameters: "${ex.message}".`);
console.error(`_parseHashParams: "${ex.message}".`);
}
break;
}
@ -366,7 +369,7 @@ const PDFViewerApplication = {
await loadPDFBug(this);
this._PDFBug.init({ OPS }, mainContainer, enabled);
} catch (ex) {
console.error(`_parseHashParameters: "${ex.message}".`);
console.error(`_parseHashParams: "${ex.message}".`);
}
}
// It is not possible to change locale for the (various) extension builds.