cdadb0db4d
This method captures all application/pdf streams, loads the viewer and passes the stream to the PDF.js viewer. This commit shows a proof of concept using the chrome.streamsPrivate API. Advantages of new method: - Access to the response body of the original request, thus fewer network requests. - PDFs from non-GET requests (e.g. POST) are now supported. - FTP files are also supported. Possible improvements: - Use declared content scripts instead of dynamic chrome.tabs.executeScript. This allows the extension to render the viewer in frames when the extension is disallowed to run executeScript for the top URL. - Use chrome.declarativeWebRequest instead of webRequest, and replace background page with event page (don't forget to profile the difference & will the background/event page still work as intended?).
47 lines
1.6 KiB
JavaScript
47 lines
1.6 KiB
JavaScript
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* Copyright 2013 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/* globals chrome */
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'use strict';
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var ChromeCom = (function ChromeComClosure() {
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return {
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/**
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* Creates an event that the extension is listening for and will
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* asynchronously respond by calling the callback.
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* @param {String} action The action to trigger.
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* @param {String} data Optional data to send.
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* @param {Function} callback Optional response callback that will be called
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* with one data argument. When the request cannot be handled, the callback
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* is immediately invoked with no arguments.
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*/
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request: function(action, data, callback) {
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var message = {
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action: action,
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data: data
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};
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if (!chrome.runtime) {
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console.error('chrome.runtime is undefined.');
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if (callback) callback();
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} else if (callback) {
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chrome.runtime.sendMessage(message, callback);
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} else {
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chrome.runtime.sendMessage(message);
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}
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}
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};
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})();
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