pdf.js/extensions/firefox/components/pdfContentHandler.js
2011-10-19 11:14:13 -07:00

65 lines
1.9 KiB
JavaScript

/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
'use strict';
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cr = Components.results;
const Cu = Components.utils;
const PDF_CONTENT_TYPE = 'application/pdf';
Cu.import('resource://gre/modules/XPCOMUtils.jsm');
Cu.import('resource://gre/modules/Services.jsm');
function log(aMsg) {
let msg = 'pdfContentHandler.js: ' + (aMsg.join ? aMsg.join('') : aMsg);
Cc['@mozilla.org/consoleservice;1'].getService(Ci.nsIConsoleService)
.logStringMessage(msg);
dump(msg + '\n');
}
const NS_ERROR_WONT_HANDLE_CONTENT = 0x805d0001;
function pdfContentHandler() {
}
pdfContentHandler.prototype = {
handleContent: function handleContent(aMimetype, aContext, aRequest) {
if (aMimetype != PDF_CONTENT_TYPE)
throw NS_ERROR_WONT_HANDLE_CONTENT;
if (!(aRequest instanceof Ci.nsIChannel))
throw NS_ERROR_WONT_HANDLE_CONTENT;
let window = null;
let callbacks = aRequest.notificationCallbacks ||
aRequest.loadGroup.notificationCallbacks;
if (!callbacks)
return;
window = callbacks.getInterface(Ci.nsIDOMWindow);
let url = null;
try {
url = Services.prefs.getCharPref('extensions.pdf.js.url');
} catch (e) {
log('Error retrieving the pdf.js base url - ' + e);
throw NS_ERROR_WONT_HANDLE_CONTENT;
}
let targetUrl = aRequest.URI.spec;
if (targetUrl.indexOf('?pdfjs.action=download') >= 0)
throw NS_ERROR_WONT_HANDLE_CONTENT;
aRequest.cancel(Cr.NS_BINDING_ABORTED);
window.location = url.replace('%s', targetUrl);
},
classID: Components.ID('{2278dfd0-b75c-11e0-8257-1ba3d93c9f1a}'),
QueryInterface: XPCOMUtils.generateQI([Ci.nsIContentHandler])
};
var NSGetFactory = XPCOMUtils.generateNSGetFactory([pdfContentHandler]);