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/**
* Checks if the page is displayed in an iframe. If not redirect to /.
**/
function redirectIfNotDisplayedInFrame () {
try {
if (window.frameElement) {
return;
}
} catch (e) {}
window.location.href = '/';
}
redirectIfNotDisplayedInFrame();
// When "PDFViewerApplication.webViewerInitialized" is executed (once
// "PDFViewerApplication.initialize" is done) it opens the PDF file via URL,
// which requires the PDFViewerApplication to be properly configured, so the
// custom initialization has to be executed before that. This can be done by
// listening to the "webviewerloaded" event, which is emitted after
// "PDFViewerApplication" and "PDFViewerApplicationOptions" are globally set and
// before "PDFViewerApplication.initialize" is executed.
function initializeCustomPDFViewerApplication() {
// Preferences override options, so they must be disabled for
// "externalLinkTarget" to take effect.
PDFViewerApplicationOptions.set('disablePreferences', true);
PDFViewerApplicationOptions.set('externalLinkTarget', pdfjsLib.LinkTarget.BLANK);
PDFViewerApplicationOptions.set('isEvalSupported', false);
PDFViewerApplicationOptions.set('workerSrc', document.getElementsByTagName('head')[0].getAttribute('data-workersrc'));
PDFViewerApplicationOptions.set('cMapUrl', document.getElementsByTagName('head')[0].getAttribute('data-cmapurl'));
// The download has to be forced to use the URL of the file; by default
// "PDFViewerApplication.download" uses a blob, but this causes a CSP error
// (at least, in Firefox) when trying to download it.
PDFViewerApplication.download = function() {
// "isDataSchema()" and "getPDFFileNameFromURL()" are copied from
// "vendor/pdfjs/web/viewer.js", as the functions defined in that file
// can not be accessed from the outside.
function isDataSchema(url) {
var i = 0,
ii = url.length;
while (i < ii && url[i].trim() === '') {
i++;
}
return url.substr(i, 5).toLowerCase() === 'data:';
}
function getPDFFileNameFromURL(url) {
var defaultFilename = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'document.pdf';
if (isDataSchema(url)) {
console.warn('getPDFFileNameFromURL: ' + 'ignoring "data:" URL for performance reasons.');
return defaultFilename;
}
var reURI = /^(?:(?:[^:]+:)?\/\/[^\/]+)?([^?#]*)(\?[^#]*)?(#.*)?$/;
var reFilename = /[^\/?#=]+\.pdf\b(?!.*\.pdf\b)/i;
var splitURI = reURI.exec(url);
var suggestedFilename = reFilename.exec(splitURI[1]) || reFilename.exec(splitURI[2]) || reFilename.exec(splitURI[3]);
if (suggestedFilename) {
suggestedFilename = suggestedFilename[0];
if (suggestedFilename.indexOf('%') !== -1) {
try {
suggestedFilename = reFilename.exec(decodeURIComponent(suggestedFilename))[0];
} catch (ex) {}
}
}
return suggestedFilename || defaultFilename;
}
var url = decodeURIComponent(window.location.search.substr(6));
this.downloadManager.downloadUrl(url, getPDFFileNameFromURL(url));
};
var hideDownload = window.parent.document.getElementById('hideDownload').value === 'true';
if (hideDownload) {
// Disable download function when downloads are hidden, as even if the
// buttons in the UI are hidden the download could still be triggered
// with Ctrl|Meta+S.
PDFViewerApplication.download = function() {
}
// Disable printing service when downloads are hidden, as even if the
// buttons in the UI are hidden the printing could still be triggered
// with Ctrl|Meta+P.
// Abuse the "supportsPrinting" parameter, which signals that the
// browser does not fully support printing, to make PDFViewer disable
// the printing service.
// "supportsPrinting" is a getter function, so it needs to be deleted
// before replacing it with a simple value.
delete PDFViewerApplication.supportsPrinting;
PDFViewerApplication.supportsPrinting = false;
// When printing is not supported a warning is shown by the default
// "beforePrint" function when trying to print. That function needs to
// be replaced with an empty one to prevent that warning to be shown.
PDFViewerApplication.beforePrint = function() {
}
}
}
document.addEventListener('webviewerloaded', initializeCustomPDFViewerApplication, true);
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