pjs/suite/browser/nsBrowserContentHandler.js

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JavaScript

/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Mozilla Firefox browser.
*
* The Initial Developer of the Original Code is
* Benjamin Smedberg <benjamin@smedbergs.us>
*
* Portions created by the Initial Developer are Copyright (C) 2004
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Neil Rashbook <neil@parkwaycc.co.uk>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
const nsISupports = Components.interfaces.nsISupports;
const nsIBrowserDOMWindow = Components.interfaces.nsIBrowserDOMWindow;
const nsIBrowserHistory = Components.interfaces.nsIBrowserHistory;
const nsIChannel = Components.interfaces.nsIChannel;
const nsICommandLine = Components.interfaces.nsICommandLine;
const nsICommandLineHandler = Components.interfaces.nsICommandLineHandler;
const nsIComponentRegistrar = Components.interfaces.nsIComponentRegistrar;
const nsICategoryManager = Components.interfaces.nsICategoryManager;
const nsIContentHandler = Components.interfaces.nsIContentHandler;
const nsIDOMWindow = Components.interfaces.nsIDOMWindow;
const nsIFactory = Components.interfaces.nsIFactory;
const nsIFileURL = Components.interfaces.nsIFileURL;
const nsIHttpProtocolHandler = Components.interfaces.nsIHttpProtocolHandler;
const nsIPrefService = Components.interfaces.nsIPrefService;
const nsIPrefBranch = Components.interfaces.nsIPrefBranch;
const nsIPrefLocalizedString = Components.interfaces.nsIPrefLocalizedString;
const nsISupportsString = Components.interfaces.nsISupportsString;
const nsIURIFixup = Components.interfaces.nsIURIFixup;
const nsIWindowMediator = Components.interfaces.nsIWindowMediator;
const nsIWindowWatcher = Components.interfaces.nsIWindowWatcher;
const nsIWebNavigationInfo = Components.interfaces.nsIWebNavigationInfo;
const NS_BINDING_ABORTED = 0x804b0002;
const NS_ERROR_WONT_HANDLE_CONTENT = 0x805d0001;
const NS_GENERAL_STARTUP_PREFIX = "@mozilla.org/commandlinehandler/general-startup;1?type=";
function shouldLoadURI(aURI)
{
if (aURI && !aURI.schemeIs("chrome"))
return true;
dump("*** Preventing external load of chrome: URI into browser window\n");
dump(" Use -chrome <uri> instead\n");
return false;
}
function resolveURIInternal(aCmdLine, aArgument)
{
try {
var uri = aCmdLine.resolveURI(aArgument);
if (!(uri instanceof nsIFileURL) || uri.file.exists())
return uri;
} catch (e) {
Components.utils.reportError(e);
}
// We have interpreted the argument as a relative file URI, but the file
// doesn't exist. Try URI fixup heuristics: see bug 290782.
try {
var urifixup = Components.classes["@mozilla.org/docshell/urifixup;1"]
.getService(nsIURIFixup);
uri = urifixup.createFixupURI(aArgument, 0);
} catch (e) {
Components.utils.reportError(e);
}
return uri;
}
function getHomePageGroup(prefs)
{
var homePage = prefs.getComplexValue("browser.startup.homepage",
nsIPrefLocalizedString).data;
var count = 0;
try {
count = prefs.getIntPref("browser.startup.homepage.count");
} catch (e) {
}
for (var i = 1; i < count; ++i) {
try {
homePage += '\n' + prefs.getComplexValue("browser.startup.homepage." + i,
nsISupportsString).data;
} catch (e) {
}
}
return homePage;
}
function needHomePageOverride(prefs)
{
var savedmstone = null;
try {
savedmstone = prefs.getCharPref("browser.startup.homepage_override.mstone");
if (savedmstone == "ignore")
return false;
} catch (e) {
}
var mstone = Components.classes["@mozilla.org/network/protocol;1?name=http"]
.getService(nsIHttpProtocolHandler).misc;
if (mstone == savedmstone)
return false;
prefs.setCharPref("browser.startup.homepage_override.mstone", mstone);
return true;
}
function getURLToLoad()
{
var prefs = Components.classes["@mozilla.org/preferences-service;1"]
.getService(nsIPrefBranch);
if (needHomePageOverride(prefs)) {
try {
return prefs.getComplexValue("startup.homepage_override_url",
nsIPrefLocalizedString).data;
} catch (e) {
}
}
try {
switch (prefs.getIntPref("browser.startup.page")) {
case 1:
return getHomePageGroup(prefs);
case 2:
return Components.classes["@mozilla.org/browser/global-history;2"]
.getService(nsIBrowserHistory).lastPageVisited;
}
} catch (e) {
}
return "about:blank";
}
function openWindow(parent, url, features, arg)
{
var wwatch = Components.classes["@mozilla.org/embedcomp/window-watcher;1"]
.getService(nsIWindowWatcher);
var argstring = Components.classes["@mozilla.org/supports-string;1"]
.createInstance(nsISupportsString);
argstring.data = arg;
return wwatch.openWindow(parent, url, "", features, argstring);
}
function openPreferences()
{
var win = getMostRecentWindow("mozilla:preferences");
if (win)
win.focus();
else
openWindow(null, "chrome://communicator/content/pref/pref.xul", "chrome,titlebar,dialog=no", "");
}
function getMostRecentWindow(aType)
{
var wm = Components.classes["@mozilla.org/appshell/window-mediator;1"]
.getService(nsIWindowMediator);
return wm.getMostRecentWindow(aType);
}
function getBrowserURL()
{
try {
return Components.classes["@mozilla.org/preferences-service;1"]
.getService(nsIPrefBranch)
.getCharPref("browser.chromeURL");
} catch (e) {
}
return "chrome://navigator/content/naviagator.xul";
}
function handURIToExistingBrowser(uri, location, features)
{
if (!shouldLoadURI(uri))
return;
var navWin = getMostRecentWindow("navigator:browser");
if (navWin)
navWin.browserDOMWindow.openURI(uri, null, location,
nsIBrowserDOMWindow.OPEN_EXTERNAL);
else
openWindow(null, getBrowserURL(), features, uri.spec);
}
var nsBrowserContentHandler = {
get wrappedJSObject() {
return this;
},
/* nsISupports */
QueryInterface: function QueryInterface(iid) {
if (iid.equals(nsISupports) ||
iid.equals(nsICommandLineHandler) ||
iid.equals(nsICommandLine) ||
iid.equals(nsIContentHandler) ||
iid.equals(nsIFactory))
return this;
throw Components.results.NS_ERROR_NO_INTERFACE;
},
/* nsICommandLineHandler */
handle: function handle(cmdLine) {
var features = "chrome,all,dialog=no";
try {
var width = cmdLine.handleFlagWithParam("width", false);
if (width != null)
features += ",width=" + width;
} catch (e) {
}
try {
var height = cmdLine.handleFlagWithParam("height", false);
if (height != null)
features += ",height=" + height;
} catch (e) {
}
try {
var remote = cmdLine.handleFlagWithParam("remote", true);
if (/^\s*(\w+)\s*\(\s*([^\s,]+)\s*,?\s*([^\s]*)\s*\)\s*$/.test(remote)) {
switch (RegExp.$1.toLowerCase()) {
case "openurl":
case "openfile":
// openURL(<url>)
// openURL(<url>,new-window)
// openURL(<url>,new-tab)
var uri = resolveURIInternal(cmdLine, RegExp.$2);
var location = nsIBrowserDOMWindow.OPEN_DEFAULTWINDOW;
if (RegExp.$3 == "new-window")
location = nsIBrowserDOMWindow.OPEN_NEWWINDOW;
else if (RegExp.$3 == "new-tab")
location = nsIBrowserDOMWindow.OPEN_NEWTAB;
handURIToExistingBrowser(uri, location, features);
break;
case "mailto":
openWindow(null, "chrome://messenger/content/messengercompose/messengercompose.xul", features, RegExp.$2);
break;
case "xfedocommand":
switch (RegExp.$2.toLowerCase()) {
case "openbrowser":
openWindow(null, getBrowserURL(), features, RegExp.$3 || getURLToLoad());
break;
case "openinbox":
openWindow(null, "chrome://messenger/content", features);
break;
case "composemessage":
openWindow(null, "chrome://messenger/content/messengercompose/messengercompose.xul", features, RegExp.$3);
break;
default:
throw Components.results.NS_ERROR_ABORT;
}
break;
default:
// Somebody sent us a remote command we don't know how to process:
// just abort.
throw Components.results.NS_ERROR_ABORT;
}
cmdLine.preventDefault = true;
}
} catch (e) {
// If we had a -remote flag but failed to process it, throw
// NS_ERROR_ABORT so that the xremote code knows to return a failure
// back to the handling code.
throw Components.results.NS_ERROR_ABORT;
}
try {
var browserParam = cmdLine.handleFlagWithParam("browser", false);
if (browserParam) {
openWindow(null, getBrowserURL(), features, browserParam);
cmdLine.preventDefault = true;
}
} catch (e) {
if (cmdLine.handleFlag("browser", false)) {
openWindow(null, getBrowserURL(), features, getURLToLoad());
cmdLine.preventDefault = true;
}
}
try {
var urlParam = cmdLine.handleFlagWithParam("url", false);
if (urlParam) {
try {
urlParam = resolveURIInternal(cmdLine, urlParam);
handURIToExistingBrowser(urlParam, nsIBrowserDOMWindow.OPEN_DEFAULTWINDOW, features);
cmdLine.preventDefault = true;
} catch (e) {
}
}
} catch (e) {
}
try {
var chromeParam = cmdLine.handleFlagWithParam("chrome", false);
if (chromeParam) {
openWindow(null, chromeParam, features);
cmdLine.preventDefault = true;
}
} catch (e) {
}
if (cmdLine.handleFlag("preferences", false)) {
openPreferences();
cmdLine.preventDefault = true;
}
if (cmdLine.handleFlag("silent", false))
cmdLine.preventDefault = true;
if (!cmdLine.preventDefault && cmdLine.length) {
var arg = cmdLine.getArgument(0);
if (!/^-/.test(arg)) {
try {
arg = resolveURIInternal(cmdLine, arg);
handURIToExistingBrowser(arg, nsIBrowserDOMWindow.OPEN_DEFAULTWINDOW, features);
cmdLine.preventDefault = true;
} catch (e) {
}
}
}
if (!cmdLine.preventDefault) {
this.realCmdLine = cmdLine;
var prefBranch = Components.classes["@mozilla.org/preferences-service;1"]
.getService(nsIPrefService)
.getBranch("general.startup.");
var startupArray = prefBranch.getChildList("", {});
for (var i = 0; i < startupArray.length; ++i) {
this.currentArgument = startupArray[i];
var contract = NS_GENERAL_STARTUP_PREFIX + this.currentArgument;
if (contract in Components.classes) {
// Ignore any exceptions - we can't do anything about them here.
try {
if (prefBranch.getBoolPref(this.currentArgument)) {
var handler = Components.classes[contract].getService(nsICommandLineHandler);
if (handler.wrappedJSObject)
handler.wrappedJSObject.handle(this);
else
handler.handle(this);
}
} catch (e) {
Components.utils.reportError(e);
}
}
}
}
if (!cmdLine.preventDefault) {
var homePage = getURLToLoad();
if (!/\n/.test(homePage)) {
try {
var urifixup = Components.classes["@mozilla.org/docshell/urifixup;1"]
.getService(nsIURIFixup);
var uri = urifixup.createFixupURI(homePage, 0);
handURIToExistingBrowser(uri, nsIBrowserDOMWindow.OPEN_DEFAULTWINDOW, features);
cmdLine.preventDefault = true;
} catch (e) {
}
}
if (!cmdLine.preventDefault) {
openWindow(null, getBrowserURL(), features, homePage);
cmdLine.preventDefault = true;
}
}
},
helpInfo: " -browser <url> Open a browser window.\n" +
" -url <url> Open the specified url.\n" +
" -chrome <url> Open the specified chrome.\n",
/* nsICommandLine */
length: 1,
getArgument: function getArgument(index) {
if (index == 0)
return this.currentArgument;
throw Components.results.NS_ERROR_INVALID_ARG;
},
findFlag: function findFlag(flag, caseSensitive) {
if (caseSensitive)
return flag == this.currentArgument ? 0 : -1;
return flag.toLowerCase() == this.currentArgument.toLowerCase() ? 0 : -1;
},
removeArguments: function removeArguments(start, end) {
// do nothing
},
handleFlag: function handleFlag(flag, caseSensitive) {
if (caseSensitive)
return flag == this.currentArgument;
return flag.toLowerCase() == this.currentArgument.toLowerCase();
},
handleFlagWithParam : function handleFlagWithParam(flag, caseSensitive) {
if (this.handleFlag(flag, caseSensitive))
throw Components.results.NS_ERROR_INVALID_ARG;
},
get state() {
return this.realCmdLine.state;
},
get preventDefault() {
return this.realCmdLine.preventDefault;
},
set preventDefault(preventDefault) {
return this.realCmdLine.preventDefault = preventDefault;
},
get workingDirectory() {
return this.realCmdLine.workingDirectory;
},
get windowContext() {
return this.realCmdLine.windowContext;
},
resolveFile: function resolveFile(arg) {
return this.realCmdLine.resolveFile(arg);
},
resolveURI: function resolveURI(arg) {
return this.realCmdLine.resolveURI(arg);
},
/* nsIContentHandler */
handleContent: function handleContent(contentType, context, request) {
var webNavInfo = Components.classes["@mozilla.org/webnavigation-info;1"]
.getService(nsIWebNavigationInfo);
if (!webNavInfo.isTypeSupported(contentType, null))
throw NS_ERROR_WONT_HANDLE_CONTENT;
var parentWin;
try {
parentWin = context.getInterface(nsIDOMWindow);
} catch (e) {
}
request.QueryInterface(nsIChannel);
openWindow(parentWin, request.URI, null, null);
request.cancel(NS_BINDING_ABORTED);
},
/* nsIFactory */
createInstance: function createInstance(outer, iid) {
if (outer != null)
throw Components.results.NS_ERROR_NO_AGGREGATION;
return this.QueryInterface(iid);
},
lockFactory: function lockFactory(lock) {
/* no-op */
}
};
const CONTRACTID_PREFIX = "@mozilla.org/uriloader/content-handler;1?type=";
const BROWSER_CONTRACTID = NS_GENERAL_STARTUP_PREFIX + "browser";
const BROWSER_CID = Components.ID("{c2343730-dc2c-11d3-98b3-001083010e9b}");
var Module = {
/* nsISupports */
QueryInterface: function QueryInterface(iid) {
if (iid.equals(Components.interfaces.nsIModule) ||
iid.equals(Components.interfaces.nsISupports))
return this;
throw Components.results.NS_ERROR_NO_INTERFACE;
},
/* nsIModule */
getClassObject: function getClassObject(compMgr, cid, iid) {
if (cid.equals(BROWSER_CID))
return nsBrowserContentHandler.QueryInterface(iid);
throw Components.results.NS_ERROR_FACTORY_NOT_REGISTERED;
},
registerSelf: function registerSelf(compMgr, fileSpec, location, type) {
var compReg = compMgr.QueryInterface(nsIComponentRegistrar);
compReg.registerFactoryLocation(BROWSER_CID,
"nsBrowserContentHandler",
BROWSER_CONTRACTID,
fileSpec,
location,
type);
function registerType(contentType) {
compReg.registerFactoryLocation(BROWSER_CID,
"Browser Content Handler",
CONTRACTID_PREFIX + contentType,
fileSpec,
location,
type);
}
registerType("text/html");
registerType("application/vnd.mozilla.xul+xml");
registerType("image/svg+xml");
registerType("text/rdf");
registerType("text/xml");
registerType("application/xhtml+xml");
registerType("text/css");
registerType("text/plain");
registerType("image/gif");
registerType("image/jpeg");
registerType("image/jpg");
registerType("image/png");
registerType("image/bmp");
registerType("image/x-icon");
registerType("image/vnd.microsoft.icon");
registerType("image/x-xbitmap");
registerType("application/http-index-format");
var catMan = Components.classes["@mozilla.org/categorymanager;1"]
.getService(nsICategoryManager);
catMan.addCategoryEntry("command-line-handler", "x-default",
BROWSER_CONTRACTID, true, true);
},
unregisterSelf: function unregisterSelf(compMgr, location, type) {
var compReg = compMgr.QueryInterface(nsIComponentRegistrar);
compReg.unregisterFactoryLocation(BROWSER_CID, location);
var catMan = Components.classes["@mozilla.org/categorymanager;1"]
.getService(nsICategoryManager);
catMan.deleteCategoryEntry("command-line-handler",
"x-default", true);
},
canUnload: function canUnload(compMgr) {
return true;
}
};
// NSGetModule: Return the nsIModule object.
function NSGetModule(compMgr, fileSpec) {
return Module;
}