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Merge pull request #3751 from Rob--W/crx-alternative-loader

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[Chrome extension] Change PDF rendering method.
This commit is contained in:
Tim van der Meij 2013-10-17 10:01:37 -07:00
commit 5726ffdcbc
12 changed files with 440 additions and 308 deletions
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256
extensions/chromium/chrome.tabs.executeScriptInFrame.js Normal file
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@ -0,0 +1,256 @@
/**
* (c) 2013 Rob Wu <gwnRob@gmail.com>
* Released under the MIT license
* https://github.com/Rob--W/chrome-api/chrome.tabs.executeScriptInFrame
*
* Implements the chrome.tabs.executeScriptInFrame API.
* This API is similar to the chrome.tabs.executeScript method, except
* that it also recognizes the "frameId" property.
* This frameId can be obtained through the webNavigation or webRequest API.
*
* When an error occurs, chrome.runtime.lastError is set.
*
* Required permissions:
* webRequest
* webRequestBlocking
* Host permissions for the tab
*
* In addition, the following field must also be set in manifest.json:
* "web_accessible_resources": ["getFrameId"]
*/
(function() {
/* jshint browser:true, maxlen:100 */
/* globals chrome, console */
'use strict';
chrome.tabs.executeScriptInFrame = executeScript;
// This URL is used to communicate the frameId. The resource is never visited, so it should
// be a non-existent location. Do not use *, ", ' or line breaks in the file name.
var URL_WHAT_IS_MY_FRAME_ID = chrome.extension.getURL('getFrameId');
// The callback will be called within ... ms:
// Don't set a too low value.
var MAXIMUM_RESPONSE_TIME_MS = 1000;
// Callbacks are stored here until they're invoked.
// Key = dummyUrl, value = callback function
var callbacks = {};
chrome.webRequest.onBeforeRequest.addListener(function showFrameId(details) {
// Positive integer frameId >= 0
// Since an image is used as a data transport, we add 1 to get a non-zero height.
var frameId = details.frameId + 1;
// Assume that the frameId fits in two bytes - which is a very reasonable assumption.
var width = String.fromCharCode(frameId & 0xFF, frameId & 0xFF00);
var height = '\x01\x00';
// Convert data to base64 to avoid loss of bytes
var image = 'data:image/gif;base64,' + btoa(
// 4749 4638 3961 (GIF header)
'GIF89a' +
// Logical Screen Width (LSB)
width +
// Logical Screen Height (LSB)
height +
// "No Global Color Table follows"
'\x00' +
// Background color
'\xff' +
// No aspect information is given
'\x00' +
// (image descriptor)
// Image Separator
'\x2c' +
// Image Position (Left & Top)
'\x00\x00\x00\x00' +
// Image Width (LSB)
width +
// Image Height (LSB)
height +
// Local Color Table is not present
'\x00' +
// (End of image descriptor)
// Image data
'\x02\x02\x44\x01\x00' +
// GIF trailer
'\x3b'
);
return {redirectUrl: image};
}, {
urls: [URL_WHAT_IS_MY_FRAME_ID + '*'],
types: ['image']
}, ['blocking']);
chrome.runtime.onMessage.addListener(function(message, sender, sendResponse) {
if (message && message.executeScriptCallback) {
var callback = callbacks[message.identifier];
if (callback) {
if (message.hello) {
clearTimeout(callback.timer);
return;
}
delete callbacks[message.identifier];
// Result within an array to be consistent with the chrome.tabs.executeScript API.
callback([message.evalResult]);
} else {
console.warn('Callback not found for response in tab ' + sender.tab.id);
}
}
});
/**
* Execute content script in a specific frame.
*
* @param tabId {integer} required
* @param details.frameId {integer} required
* @param details.code {string} Code or file is required (not both)
* @param details.file {string} Code or file is required (not both)
* @param details.runAt {optional string} One of "document_start", "document_end", "document_idle"
* @param callback {optional function(optional array of any result)} When an error occurs, result
* is not set.
*/
function executeScript(tabId, details, callback) {
console.assert(typeof details === 'object', 'details must be an object (argument 0)');
var frameId = details.frameId;
console.assert(typeof tabId === 'number', 'details.tabId must be a number');
console.assert(typeof frameId === 'number', 'details.frameId must be a number');
var sourceType = 'code' in details ? 'code' : 'file';
console.assert(sourceType in details, 'No source code or file specified');
var sourceValue = details[sourceType];
console.assert(typeof sourceValue === 'string', 'details.' + sourceType + ' must be a string');
var runAt = details.runAt;
if (!callback) callback = function() {/* no-op*/};
console.assert(typeof callback === 'function', 'callback must be a function');
if (frameId === 0) {
// No need for heavy lifting if we want to inject the script in the main frame
var injectDetails = {
allFrames: false,
runAt: runAt
};
injectDetails[sourceType] = sourceValue;
chrome.tabs.executeScript(tabId, injectDetails, callback);
return;
}
var identifier = Math.random().toString(36);
if (sourceType === 'code') {
executeScriptInFrame();
} else { // sourceType === 'file'
(function() {
var x = new XMLHttpRequest();
x.open('GET', chrome.extension.getURL(sourceValue), true);
x.onload = function() {
sourceValue = x.responseText;
executeScriptInFrame();
};
x.onerror = function executeScriptResourceFetchError() {
var message = 'Failed to load file: "' + sourceValue + '".';
console.error('executeScript: ' + message);
chrome.runtime.lastError = chrome.extension.lastError = { message: message };
try {
callback();
} finally {
chrome.runtime.lastError = chrome.extension.lastError = undefined;
}
};
x.send();
})();
}
function executeScriptInFrame() {
callbacks[identifier] = callback;
chrome.tabs.executeScript(tabId, {
code: '(' + DETECT_FRAME + ')(' +
'window,' +
JSON.stringify(identifier) + ',' +
frameId + ',' +
JSON.stringify(sourceValue) + ')',
allFrames: true,
runAt: 'document_start'
}, function(results) {
if (results) {
callback.timer = setTimeout(executeScriptTimedOut, MAXIMUM_RESPONSE_TIME_MS);
} else {
// Failed :(
delete callbacks[identifier];
callback();
}
});
}
function executeScriptTimedOut() {
var callback = callbacks[identifier];
if (!callback) {
return;
}
delete callbacks[identifier];
var message = 'Failed to execute script: Frame ' + frameId + ' not found in tab ' + tabId;
console.error('executeScript: ' + message);
chrome.runtime.lastError = chrome.extension.lastError = { message: message };
try {
callback();
} finally {
chrome.runtime.lastError = chrome.extension.lastError = undefined;
}
}
}
/**
* Code executed as a content script.
*/
var DETECT_FRAME = '' + function checkFrame(window, identifier, frameId, code) {
var i;
if ('__executeScript_frameId__' in window) {
evalAsContentScript();
} else {
// Do NOT use new Image(), because of http://crbug.com/245296 in Chrome 27-29
i = window.document.createElement('img');
i.onload = function() {
window.__executeScript_frameId__ = this.naturalWidth - 1;
evalAsContentScript();
};
// Trigger webRequest event to get frameId
// (append extra characters to bust the cache)
i.src = 'URL_WHAT_IS_MY_FRAME_ID?' + Math.random().toString(36).slice(-6);
}
for (i = 0 ; i < window.frames.length; ++i) {
try {
var frame = window.frames[i];
var scheme = frame.location.protocol;
if (scheme !== 'https:' && scheme !== 'http:' && scheme !== 'file:') {
checkFrame(frame, identifier, frameId, code);
}
} catch (e) {
// blocked by same origin policy, so it's not a javascript: / about:blank
// URL. chrome.tabs.executeScript will run the script for the frame.
}
}
function evalAsContentScript() {
if (window.__executeScript_frameId__ !== frameId) {
return;
}
// Send an early message to make sure that any blocking code
// in the evaluated code does not cause the time-out in the background page
// to be triggered
chrome.runtime.sendMessage({
executeScriptCallback: true,
hello: true,
identifier: identifier
});
var result = null;
try {
// jshint evil:true
result = window.eval(code);
} finally {
chrome.runtime.sendMessage({
executeScriptCallback: true,
evalResult: result,
identifier: identifier
});
}
}
}.toString().replace('URL_WHAT_IS_MY_FRAME_ID', URL_WHAT_IS_MY_FRAME_ID);
})();

54
extensions/chromium/extension-router.js Normal file
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@ -0,0 +1,54 @@
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
/*
Copyright 2013 Mozilla Foundation
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/* globals chrome */
'use strict';
(function ExtensionRouterClosure() {
var VIEWER_URL = chrome.extension.getURL('content/web/viewer.html');
var CRX_BASE_URL = chrome.extension.getURL('/');
// TODO(rob): Use declarativeWebRequest once declared URL-encoding is
// supported, see http://crbug.com/273589
// (or rewrite the query string parser in viewer.js to get it to
// recognize the non-URL-encoded PDF URL.)
chrome.webRequest.onBeforeRequest.addListener(function(details) {
// This listener converts chrome-extension://.../http://...pdf to
// chrome-extension://.../content/web/viewer.html?file=http%3A%2F%2F...pdf
var url = details.url.substring(CRX_BASE_URL.length);
var matchingUrl = /^(?:https?|file|ftp|chrome-extension)(:|%3A)/.exec(url);
if (matchingUrl) {
// location.hash is restored when "#" is missing from URL.
url = url.split('#')[0];
if (matchingUrl[1] === ':') {
url = encodeURIComponent(url);
}
url = VIEWER_URL + '?file=' + url;
console.log('Redirecting ' + details.url + ' to ' + url);
return { redirectUrl: url };
}
}, {
types: ['main_frame', 'sub_frame'],
urls: [
CRX_BASE_URL + 'http*', // and https
CRX_BASE_URL + 'file*',
CRX_BASE_URL + 'ftp*',
CRX_BASE_URL + 'chrome-extension*'
]
}, ['blocking']);
console.log('Set up extension URL router.');
})();

3
extensions/chromium/hide-xhtml-error.css
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@ -1,3 +0,0 @@
parsererror {
display: none;
}

150
extensions/chromium/insertviewer.js
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@ -1,150 +0,0 @@
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
/*
Copyright 2012 Mozilla Foundation
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/* globals chrome */
'use strict';
if (!chrome.runtime) {
// Chrome 21-
chrome.runtime = chrome.extension;
} else if (!chrome.runtime.onMessage) {
// Chrome 22-25
chrome.runtime.onMessage = chrome.extension.onMessage;
}
var VIEWER_URL = chrome.runtime.getURL('content/web/viewer.html');
var BASE_URL = VIEWER_URL.replace(/[^\/]+$/, '');
function getViewerURL(pdf_url) {
return VIEWER_URL + '?file=' + encodeURIComponent(pdf_url);
}
function showViewer(url) {
if (document.documentElement === null) {
// If the root element hasn't been rendered yet, delay the next operation.
// Otherwise, document.readyState will get stuck in "interactive".
setTimeout(showViewer, 0, url);
return;
}
// Cancel page load and empty document.
window.stop();
document.body.textContent = '';
replaceDocumentWithViewer(url);
}
function makeLinksAbsolute(doc) {
normalize('href', 'link[href]');
normalize('src', 'style[src],script[src]');
function normalize(attribute, selector) {
var nodes = doc.querySelectorAll(selector);
for (var i=0; i<nodes.length; ++i) {
var node = nodes[i];
var newAttribute = makeAbsolute(node.getAttribute(attribute));
node.setAttribute(attribute, newAttribute);
}
}
function makeAbsolute(url) {
if (url.indexOf('://') !== -1) return url;
return BASE_URL + url;
}
}
function replaceDocumentWithViewer(url) {
var x = new XMLHttpRequest();
x.open('GET', VIEWER_URL);
x.responseType = 'document';
x.onload = function() {
// Resolve all relative URLs
makeLinksAbsolute(x.response);
// Remove all <script> elements (added back later).
// I assumed that no inline script tags exist.
var scripts = [], script;
// new Worker('chrome-extension://..../pdf.js') fails, despite having
// the correct permissions. Fix it:
script = document.createElement('script');
script.onload = loadNextScript;
script.src = chrome.runtime.getURL('patch-worker.js');
scripts.push(script);
while (x.response.scripts.length) {
script = x.response.scripts[0];
var newScript = document.createElement('script');
newScript.onload = loadNextScript;
newScript.src = script.src;
script.parentNode.removeChild(script);
scripts.push(newScript);
}
// Replace document with viewer
var docEl = document.adoptNode(x.response.documentElement);
document.replaceChild(docEl, document.documentElement);
// Force Chrome to render content
// (without this line, the layout is broken and querySelector
// fails to find elements, even when they appear in the doc)
document.body.innerHTML += '';
// Load all scripts
loadNextScript();
function loadNextScript() {
if (scripts.length > 0)
document.head.appendChild(scripts.shift());
else
renderPDF(url);
}
};
x.send();
}
function renderPDF(url) {
var args = {
BASE_URL: BASE_URL,
pdf_url: url
};
// The following technique is explained at
// http://stackoverflow.com/a/9517879/938089
var script = document.createElement('script');
script.textContent =
'(function(args) {' +
' PDFJS.imageResourcesPath = args.BASE_URL + PDFJS.imageResourcesPath;' +
' PDFJS.workerSrc = args.BASE_URL + PDFJS.workerSrc;' +
' window.DEFAULT_URL = args.pdf_url;' +
'})(' + JSON.stringify(args) + ');';
document.head.appendChild(script);
// Trigger domready
if (document.readyState === 'complete') {
var event = document.createEvent('Event');
event.initEvent('DOMContentLoaded', true, true);
document.dispatchEvent(event);
}
}
// Activate the content script only once per frame (until reload)
if (!window.hasRun) {
window.hasRun = true;
chrome.runtime.onMessage.addListener(function listener(message) {
if (message && message.type === 'showPDFViewer' &&
message.url === location.href) {
chrome.runtime.onMessage.removeListener(listener);
showViewer(message.url);
}
});
}

17
extensions/chromium/manifest.json
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@ -15,17 +15,20 @@
"webNavigation" "webNavigation"
], ],
"content_scripts": [{ "content_scripts": [{
"matches": [ "matches": ["file://*/*"],
"*://*/*.pdf*", "js": ["nothing.js"]
"*://*/*.PDF*"
],
"css": ["hide-xhtml-error.css"]
}], }],
"background": { "background": {
"page": "pdfHandler.html" "page": "pdfHandler.html"
}, },
"incognito": "split",
"web_accessible_resources": [ "web_accessible_resources": [
"patch-worker.js", "getFrameId",
"content/*" "content/web/viewer.html",
"http:/*",
"https:/*",
"ftp:/*",
"file:/*",
"chrome-extension:/*"
] ]
} }

1
extensions/chromium/nothing.js Normal file
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@ -0,0 +1 @@
// This file has no code, and is used to deal with http://crbug.com/302548

69
extensions/chromium/pdfHandler-local.js
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@ -1,69 +0,0 @@
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
/*
Copyright 2012 Mozilla Foundation
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/* globals chrome, isPdfDownloadable */
'use strict';
// The onHeadersReceived event is not generated for local resources.
// Fortunately, local PDF files will have the .pdf extension, so there's
// no need to detect the Content-Type
// Unfortunately, the omnibox won't show the URL.
// Unfortunately, this method will not work for pages in incognito mode,
// unless "incognito":"split" is used AND http:/crbug.com/224094 is fixed.
// Keeping track of incognito tab IDs will become obsolete when
// "incognito":"split" can be used.
var incognitoTabIds = [];
chrome.windows.getAll({ populate: true }, function(windows) {
windows.forEach(function(win) {
if (win.incognito) {
win.tabs.forEach(function(tab) {
incognitoTabIds.push(tab.id);
});
}
});
});
chrome.tabs.onCreated.addListener(function(tab) {
if (tab.incognito) incognitoTabIds.push(tab.id);
});
chrome.tabs.onRemoved.addListener(function(tabId) {
var index = incognitoTabIds.indexOf(tabId);
if (index !== -1) incognitoTabIds.splice(index, 1);
});
chrome.webRequest.onBeforeRequest.addListener(
function(details) {
if (isPdfDownloadable(details)) // Defined in pdfHandler.js
return;
if (incognitoTabIds.indexOf(details.tabId) !== -1)
return; // Doesn't work in incognito mode, so don't redirect.
var viewerPage = 'content/web/viewer.html';
var url = chrome.runtime.getURL(viewerPage) +
'?file=' + encodeURIComponent(details.url);
return { redirectUrl: url };
},
{
urls: [
'file://*/*.pdf',
'file://*/*.PDF'
],
types: ['main_frame', 'sub_frame']
},
['blocking']);

3
extensions/chromium/pdfHandler.html
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@ -14,5 +14,6 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and See the License for the specific language governing permissions and
limitations under the License. limitations under the License.
--> -->
<script src="chrome.tabs.executeScriptInFrame.js"></script>
<script src="pdfHandler.js"></script> <script src="pdfHandler.js"></script>
<script src="pdfHandler-local.js"></script> <script src="extension-router.js"></script>

150
extensions/chromium/pdfHandler.js
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@ -19,6 +19,12 @@ limitations under the License.
'use strict'; 'use strict';
var VIEWER_URL = chrome.extension.getURL('content/web/viewer.html');
function getViewerURL(pdf_url) {
return VIEWER_URL + '?file=' + encodeURIComponent(pdf_url);
}
/** /**
* @param {Object} details First argument of the webRequest.onHeadersReceived * @param {Object} details First argument of the webRequest.onHeadersReceived
* event. The property "url" is read. * event. The property "url" is read.
@ -36,62 +42,6 @@ function isPdfDownloadable(details) {
return cdHeader && /^attachment/i.test(cdHeader.value); return cdHeader && /^attachment/i.test(cdHeader.value);
} }
/**
* Insert the content script in a tab which renders the PDF viewer.
* @param {number} tabId ID of the tab used by the Chrome APIs.
* @param {string} url URL of the PDF file. Used to detect whether the viewer
* should be activated in a specific (i)frame.
*/
function insertPDFJSForTab(tabId, url) {
chrome.tabs.executeScript(tabId, {
file: 'insertviewer.js',
allFrames: true,
runAt: 'document_start'
}, function() {
chrome.tabs.sendMessage(tabId, {
type: 'showPDFViewer',
url: url
});
});
}
/**
* Try to render the PDF viewer when (a frame within) a tab unloads.
* This indicates that a PDF file may be loading.
* @param {number} tabId ID of the tab used by the Chrome APIs.
* @param {string} url The URL of the pdf file.
*/
function activatePDFJSForTab(tabId, url) {
if (!chrome.webNavigation) {
// Opera... does not support the webNavigation API.
activatePDFJSForTabFallbackForOpera(tabId, url);
return;
}
var listener = function webNavigationEventListener(details) {
if (details.tabId === tabId) {
insertPDFJSForTab(tabId, url);
chrome.webNavigation.onCommitted.removeListener(listener);
}
};
var urlFilter = {
url: [{ urlEquals: url.split('#', 1)[0] }]
};
chrome.webNavigation.onCommitted.addListener(listener, urlFilter);
}
/**
* Fallback for Opera.
* @see activatePDFJSForTab
**/
function activatePDFJSForTabFallbackForOpera(tabId, url) {
chrome.tabs.onUpdated.addListener(function listener(_tabId) {
if (tabId === _tabId) {
insertPDFJSForTab(tabId, url);
chrome.tabs.onUpdated.removeListener(listener);
}
});
}
/** /**
* Get the header from the list of headers for a given name. * Get the header from the list of headers for a given name.
* @param {Array} headers responseHeaders of webRequest.onHeadersReceived * @param {Array} headers responseHeaders of webRequest.onHeadersReceived
@ -159,23 +109,58 @@ chrome.webRequest.onHeadersReceived.addListener(
return getHeadersWithContentDispositionAttachment(details); return getHeadersWithContentDispositionAttachment(details);
} }
// Replace frame's content with the PDF viewer. var viewerUrl = getViewerURL(details.url);
// This approach maintains the friendly URL in the location bar.
activatePDFJSForTab(details.tabId, details.url);
return { // Replace frame with viewer
responseHeaders: [ // TODO: When http://crbug.com/280464 is fixed, use
// Set Cache-Control header to avoid downloading a file twice // return { redirectUrl: viewerUrl };
// NOTE: This does not behave as desired, Chrome's network stack is
// oblivious for Cache control header modifications. if (details.frameId === 0) {
{name:'Cache-Control',value:'max-age=600'}, // Main frame. Just replace the tab and be done!
// Temporary render response as XHTML. chrome.tabs.update(details.tabId, {
// Since PDFs are never valid XHTML, the garbage is not going to be url: viewerUrl
// rendered. insertviewer.js will quickly replace the document with });
// the PDF.js viewer. return { cancel: true };
{name:'Content-Type',value:'application/xhtml+xml; charset=US-ASCII'}, } else {
] // Sub frame. Requires some more work...
}; // The navigation will be cancelled at the end of the webRequest cycle.
chrome.webNavigation.onErrorOccurred.addListener(function listener(nav) {
if (nav.tabId !== details.tabId || nav.frameId !== details.frameId) {
return;
}
chrome.webNavigation.onErrorOccurred.removeListener(listener);
// Locate frame and insert viewer
chrome.tabs.executeScriptInFrame(details.tabId, {
frameId: details.frameId,
code: 'location.href = ' + JSON.stringify(viewerUrl) + ';'
}, function(result) {
if (!result) {
console.warn('Frame not found! Opening viewer in new tab...');
chrome.tabs.create({
url: viewerUrl
});
}
});
}, {
url: [{ urlEquals: details.url.split('#', 1)[0] }]
});
// Prevent frame from rendering by using X-Frame-Options.
// Do not use { cancel: true }, because that makes the frame inaccessible
// to the content script that has to replace the frame's URL.
return {
responseHeaders: [{
name: 'X-Content-Type-Options',
value: 'nosniff'
}, {
name: 'X-Frame-Options',
value: 'deny'
}]
};
}
// Immediately abort the request, because the frame that initiated the
// request will be replaced with the PDF Viewer (within a split second).
}, },
{ {
urls: [ urls: [
@ -184,3 +169,24 @@ chrome.webRequest.onHeadersReceived.addListener(
types: ['main_frame', 'sub_frame'] types: ['main_frame', 'sub_frame']
}, },
['blocking','responseHeaders']); ['blocking','responseHeaders']);
chrome.webRequest.onBeforeRequest.addListener(
function(details) {
if (isPdfDownloadable(details))
return;
// NOTE: The manifest file has declared an empty content script
// at file://*/* to make sure that the viewer can load the PDF file
// through XMLHttpRequest. Necessary to deal with http://crbug.com/302548
var viewerUrl = getViewerURL(details.url);
return { redirectUrl: viewerUrl };
},
{
urls: [
'file://*/*.pdf',
'file://*/*.PDF'
],
types: ['main_frame', 'sub_frame']
},
['blocking']);

5
web/viewer-snippet-chrome-extension.html Normal file
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@ -0,0 +1,5 @@
<!-- This snippet is used in the Chrome extension, see Makefile -->
<base href="/content/web/">
<link rel="resource" type="application/l10n" href="locale/locale.properties">
<script type="text/javascript" src="l10n.js"></script>
<script type="text/javascript" src="../build/pdf.js"></script>

5
web/viewer.html
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@ -25,6 +25,9 @@ limitations under the License.
<!--#if FIREFOX || MOZCENTRAL--> <!--#if FIREFOX || MOZCENTRAL-->
<!--#include viewer-snippet-firefox-extension.html--> <!--#include viewer-snippet-firefox-extension.html-->
<!--#endif-->
<!--#if CHROME-->
<!--#include viewer-snippet-chrome-extension.html-->
<!--#endif--> <!--#endif-->
<link rel="stylesheet" href="viewer.css"/> <link rel="stylesheet" href="viewer.css"/>
@ -53,7 +56,7 @@ limitations under the License.
<script type="text/javascript">PDFJS.workerSrc = '../src/worker_loader.js';</script> <script type="text/javascript">PDFJS.workerSrc = '../src/worker_loader.js';</script>
<!--#endif--> <!--#endif-->
<!--#if GENERIC || CHROME--> <!--#if GENERIC -->
<!--#include viewer-snippet.html--> <!--#include viewer-snippet.html-->
<!--#endif--> <!--#endif-->

35
web/viewer.js
View File

@ -670,15 +670,19 @@ var PDFView = {
}, },
/** /**
* For the firefox extension we prefix the full url on anchor links so they * Prefix the full url on anchor links to make sure that links are resolved
* don't come up as resource:// urls and so open in new tab/window works. * relative to the current URL instead of the one defined in <base href>.
* @param {String} anchor The anchor hash include the #. * @param {String} anchor The anchor hash, including the #.
*/ */
getAnchorUrl: function getAnchorUrl(anchor) { getAnchorUrl: function getAnchorUrl(anchor) {
//#if !(FIREFOX || MOZCENTRAL) //#if !(FIREFOX || MOZCENTRAL || CHROME)
return anchor; return anchor;
//#else //#else
//#if CHROME
// return location.href.split('#')[0] + anchor;
//#else
// return this.url.split('#')[0] + anchor; // return this.url.split('#')[0] + anchor;
//#endif
//#endif //#endif
}, },
@ -1459,15 +1463,36 @@ var DocumentOutlineView = function documentOutlineView(outline) {
} }
}; };
//#if CHROME
//(function rewriteUrlClosure() {
// // Run this code outside DOMContentLoaded to make sure that the URL
// // is rewritten as soon as possible.
// if (location.origin + '/' !== chrome.extension.getURL('/')) {
// DEFAULT_URL = window.location.href.split('#')[0];
// } else {
// var params = PDFView.parseQueryString(document.location.search.slice(1));
// DEFAULT_URL = params.file || DEFAULT_URL;
//
// // Example: chrome-extension://.../http://example.com/file.pdf
// var humanReadableUrl = '/' + DEFAULT_URL + location.hash;
// history.replaceState(history.state, '', humanReadableUrl);
// }
//})();
//#endif
document.addEventListener('DOMContentLoaded', function webViewerLoad(evt) { document.addEventListener('DOMContentLoaded', function webViewerLoad(evt) {
PDFView.initialize(); PDFView.initialize();
//#if !(FIREFOX || MOZCENTRAL) //#if !(FIREFOX || MOZCENTRAL || CHROME)
var params = PDFView.parseQueryString(document.location.search.substring(1)); var params = PDFView.parseQueryString(document.location.search.substring(1));
var file = params.file || DEFAULT_URL; var file = params.file || DEFAULT_URL;
//#else //#else
//#if CHROME
//var file = DEFAULT_URL;
//#else
//var file = window.location.href.split('#')[0]; //var file = window.location.href.split('#')[0];
//#endif //#endif
//#endif
//#if CHROME //#if CHROME
//if (location.protocol !== 'chrome-extension:') { //if (location.protocol !== 'chrome-extension:') {