pjs/browser/components/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):
*
* 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 nsIBrowserHandler = Components.interfaces.nsIBrowserHandler;
const nsIBrowserHistory = Components.interfaces.nsIBrowserHistory;
const nsIChannel = Components.interfaces.nsIChannel;
const nsICommandLine = Components.interfaces.nsICommandLine;
const nsICommandLineHandler = Components.interfaces.nsICommandLineHandler;
const nsIContentHandler = Components.interfaces.nsIContentHandler;
const nsIDocShellTreeItem = Components.interfaces.nsIDocShellTreeItem;
const nsIDOMChromeWindow = Components.interfaces.nsIDOMChromeWindow;
const nsIDOMWindow = Components.interfaces.nsIDOMWindow;
const nsIFactory = Components.interfaces.nsIFactory;
const nsIFileURL = Components.interfaces.nsIFileURL;
const nsIHttpProtocolHandler = Components.interfaces.nsIHttpProtocolHandler;
const nsIInterfaceRequestor = Components.interfaces.nsIInterfaceRequestor;
const nsIPrefBranch = Components.interfaces.nsIPrefBranch;
const nsIPrefLocalizedString = Components.interfaces.nsIPrefLocalizedString;
const nsISupportsString = Components.interfaces.nsISupportsString;
const nsIURIFixup = Components.interfaces.nsIURIFixup;
const nsIWebNavigation = Components.interfaces.nsIWebNavigation;
const nsIWindowMediator = Components.interfaces.nsIWindowMediator;
const nsIWindowWatcher = Components.interfaces.nsIWindowWatcher;
const nsICategoryManager = Components.interfaces.nsICategoryManager;
const nsIWebNavigationInfo = Components.interfaces.nsIWebNavigationInfo;
const NS_BINDING_ABORTED = 0x804b0002;
const NS_ERROR_WONT_HANDLE_CONTENT = 0x805d0001;
const NS_ERROR_ABORT = Components.results.NS_ERROR_ABORT;
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) {
var uri = aCmdLine.resolveURI(aArgument);
if (!(uri instanceof nsIFileURL)) {
return uri;
}
try {
if (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 needHomepageOverride(prefb) {
var savedmstone = null;
try {
savedmstone = prefb.getCharPref("browser.startup.homepage_override.mstone");
} catch (e) {}
var mstone = Components.classes["@mozilla.org/network/protocol;1?name=http"]
.getService(nsIHttpProtocolHandler).misc;
if (mstone != savedmstone)
prefb.setCharPref("browser.startup.homepage_override.mstone", mstone);
// Return true if the pref didn't exist (i.e. new profile)
return !savedmstone;
}
function openWindow(parent, url, target, features, args) {
var wwatch = Components.classes["@mozilla.org/embedcomp/window-watcher;1"]
.getService(nsIWindowWatcher);
var argstring;
if (args) {
argstring = Components.classes["@mozilla.org/supports-string;1"]
.createInstance(nsISupportsString);
argstring.data = args;
}
return wwatch.openWindow(parent, url, target, features, argstring);
}
function openPreferences() {
var features = "chrome,titlebar,toolbar,centerscreen,dialog=no";
var url = "chrome://browser/content/preferences/preferences.xul";
var win = getMostRecentWindow("Browser:Preferences");
if (win) {
win.focus();
} else {
openWindow(null, url, "_blank", features);
}
}
function getMostRecentWindow(aType) {
var wm = Components.classes["@mozilla.org/appshell/window-mediator;1"]
.getService(nsIWindowMediator);
return wm.getMostRecentWindow(aType);
}
#ifdef XP_UNIX
#ifndef XP_MACOSX
#define BROKEN_WM_Z_ORDER
#endif
#endif
// this returns the most recent non-popup browser window
function getMostRecentBrowserWindow() {
var wm = Components.classes["@mozilla.org/appshell/window-mediator;1"]
.getService(Components.interfaces.nsIWindowMediator);
#ifdef BROKEN_WM_Z_ORDER
var win = wm.getMostRecentWindow("navigator:browser", true);
// if we're lucky, this isn't a popup, and we can just return this
if (win && !win.toolbar.visible) {
var windowList = wm.getEnumerator("navigator:browser", true);
// this is oldest to newest, so this gets a bit ugly
while (windowList.hasMoreElements()) {
var nextWin = windowList.getNext();
if (nextWin.toolbar.visible)
win = nextWin;
}
}
#else
var windowList = wm.getZOrderDOMWindowEnumerator("navigator:browser", true);
if (!windowList.hasMoreElements())
return null;
var win = windowList.getNext();
while (!win.toolbar.visible) {
if (!windowList.hasMoreElements())
return null;
win = windowList.getNext();
}
#endif
return win;
}
var nsBrowserContentHandler = {
/* helper functions */
mChromeURL : null,
get chromeURL() {
if (this.mChromeURL) {
return this.mChromeURL;
}
var prefb = Components.classes["@mozilla.org/preferences-service;1"]
.getService(nsIPrefBranch);
this.mChromeURL = prefb.getCharPref("browser.chromeURL");
return this.mChromeURL;
},
/* nsISupports */
QueryInterface : function bch_QI(iid) {
if (!iid.equals(nsISupports) &&
!iid.equals(nsICommandLineHandler) &&
!iid.equals(nsIBrowserHandler) &&
!iid.equals(nsIContentHandler) &&
!iid.equals(nsIFactory))
throw Components.errors.NS_ERROR_NO_INTERFACE;
return this;
},
/* nsICommandLineHandler */
handle : function bch_handle(cmdLine) {
if (cmdLine.handleFlag("browser", false)) {
openWindow(null, this.chromeURL, "_blank",
"chrome,dialog=no,all" + this.getFeatures(cmdLine),
this.defaultArgs);
cmdLine.preventDefault = true;
}
try {
var remoteCommand = cmdLine.handleFlagWithParam("remote", true);
}
catch (e) {
throw NS_ERROR_ABORT;
}
if (remoteCommand != null) {
try {
var a = /^\s*(\w+)\(([^\)]*)\)\s*$/.exec(remoteCommand);
var remoteVerb = a[1].toLowerCase();
var remoteParams = [];
var sepIndex = a[2].lastIndexOf(",");
if (sepIndex == -1)
remoteParams[0] = a[2];
else {
remoteParams[0] = a[2].substring(0, sepIndex);
remoteParams[1] = a[2].substring(sepIndex + 1);
}
switch (remoteVerb) {
case "openurl":
case "openfile":
// openURL(<url>)
// openURL(<url>,new-window)
// openURL(<url>,new-tab)
var uri = resolveURIInternal(cmdLine, remoteParams[0]);
var location = nsIBrowserDOMWindow.OPEN_DEFAULTWINDOW;
if (/new-window/.test(remoteParams[1]))
location = nsIBrowserDOMWindow.OPEN_NEWWINDOW;
else if (/new-tab/.test(remoteParams[1]))
location = nsIBrowserDOMWindow.OPEN_NEWTAB;
handURIToExistingBrowser(uri, location);
break;
case "xfedocommand":
// xfeDoCommand(openBrowser)
if (remoteParams[0].toLowerCase() != "openbrowser")
throw NS_ERROR_ABORT;
openWindow(null, this.chromeURL, "_blank",
"chrome,dialog=no,all" + this.getFeatures(cmdLine),
this.defaultArgs);
break;
default:
// Somebody sent us a remote command we don't know how to process:
// just abort.
throw 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 NS_ERROR_ABORT;
}
}
var uriparam;
try {
while ((uriparam = cmdLine.handleFlagWithParam("new-window", false))) {
var uri = resolveURIInternal(cmdLine, uriparam);
if (!shouldLoadURI(uri))
continue;
openWindow(null, this.chromeURL, "_blank",
"chrome,dialog=no,all" + this.getFeatures(cmdLine),
uri.spec);
cmdLine.preventDefault = true;
}
}
catch (e) {
Components.utils.reportError(e);
}
try {
while ((uriparam = cmdLine.handleFlagWithParam("new-tab", false))) {
var uri = resolveURIInternal(cmdLine, uriparam);
handURIToExistingBrowser(uri, nsIBrowserDOMWindow.OPEN_NEWTAB);
cmdLine.preventDefault = true;
}
}
catch (e) {
Components.utils.reportError(e);
}
var chromeParam = cmdLine.handleFlagWithParam("chrome", false);
if (chromeParam) {
// Handle the old preference dialog URL separately (bug 285416)
if (chromeParam == "chrome://browser/content/pref/pref.xul") {
openPreferences();
} else {
var features = "chrome,dialog=no,all" + this.getFeatures(cmdLine);
openWindow(null, chromeParam, "_blank", features, "");
}
cmdLine.preventDefault = true;
}
if (cmdLine.handleFlag("preferences", false)) {
openPreferences();
cmdLine.preventDefault = true;
}
if (cmdLine.handleFlag("silent", false))
cmdLine.preventDefault = true;
},
helpInfo : " -browser Open a browser window.\n",
/* nsIBrowserHandler */
get defaultArgs() {
var prefb = Components.classes["@mozilla.org/preferences-service;1"]
.getService(nsIPrefBranch);
if (needHomepageOverride(prefb)) {
try {
return prefb.getComplexValue("startup.homepage_override_url",
nsIPrefLocalizedString).data;
}
catch (e) {
}
}
try {
var choice = prefb.getIntPref("browser.startup.page");
if (choice == 1)
return this.startPage;
if (choice == 2)
return Components.classes["@mozilla.org/browser/global-history;2"]
.getService(nsIBrowserHistory).lastPageVisited;
}
catch (e) {
}
return "about:blank";
},
get startPage() {
var prefb = Components.classes["@mozilla.org/preferences-service;1"]
.getService(nsIPrefBranch);
var uri = prefb.getComplexValue("browser.startup.homepage",
nsIPrefLocalizedString).data;
if (!uri) {
prefb.clearUserPref("browser.startup.homepage");
uri = prefb.getComplexValue("browser.startup.homepage",
nsIPrefLocalizedString).data;
}
var count;
try {
count = prefb.getIntPref("browser.startup.homepage.count");
}
catch (e) {
return uri;
}
for (var i = 1; i < count; ++i) {
try {
var page = prefb.getComplexValue("browser.startup.homepage." + i,
nsIPrefLocalizedString).data;
uri += "\n" + page;
}
catch (e) {
}
}
return uri;
},
mFeatures : null,
getFeatures : function bch_features(cmdLine) {
if (this.mFeatures === null) {
this.mFeatures = "";
try {
var width = cmdLine.handleFlagWithParam("width", false);
var height = cmdLine.handleFlagWithParam("height", false);
if (width)
this.mFeatures += ",width=" + width;
if (height)
this.mFeatures += ",height=" + height;
}
catch (e) {
}
}
return this.mFeatures;
},
/* nsIContentHandler */
handleContent : function bch_handleContent(contentType, context, request) {
try {
var webNavInfo = Components.classes["@mozilla.org/webnavigation-info;1"]
.getService(nsIWebNavigationInfo);
if (!webNavInfo.isTypeSupported(contentType, null)) {
throw NS_ERROR_WONT_HANDLE_CONTENT;
}
} catch (e) {
throw NS_ERROR_WONT_HANDLE_CONTENT;
}
var parentWin;
try {
parentWin = context.getInterface(nsIDOMWindow);
}
catch (e) {
}
request.QueryInterface(nsIChannel);
openWindow(parentWin, request.URI, "_blank", null, null);
request.cancel(NS_BINDING_ABORTED);
},
/* nsIFactory */
createInstance: function bch_CI(outer, iid) {
if (outer != null)
throw Components.results.NS_ERROR_NO_AGGREGATION;
return this.QueryInterface(iid);
},
lockFactory : function bch_lock(lock) {
/* no-op */
}
};
const bch_contractID = "@mozilla.org/browser/clh;1";
const bch_CID = Components.ID("{5d0ce354-df01-421a-83fb-7ead0990c24e}");
const CONTRACTID_PREFIX = "@mozilla.org/uriloader/content-handler;1?type=";
function handURIToExistingBrowser(uri, location)
{
if (!shouldLoadURI(uri))
return;
var navWin = getMostRecentBrowserWindow();
if (!navWin) {
// if we couldn't load it in an existing window, open a new one
openWindow(null, nsBrowserContentHandler.chromeURL, "_blank",
"chrome,dialog=no,all" + nsBrowserContentHandler.getFeatures(cmdLine),
uri.spec);
return;
}
var navNav = navWin.QueryInterface(nsIInterfaceRequestor)
.getInterface(nsIWebNavigation);
var rootItem = navNav.QueryInterface(nsIDocShellTreeItem).rootTreeItem;
var rootWin = rootItem.QueryInterface(nsIInterfaceRequestor)
.getInterface(nsIDOMWindow);
var bwin = rootWin.QueryInterface(nsIDOMChromeWindow).browserDOMWindow;
bwin.openURI(uri, null, location,
nsIBrowserDOMWindow.OPEN_EXTERNAL);
}
var nsDefaultCommandLineHandler = {
/* nsISupports */
QueryInterface : function dch_QI(iid) {
if (!iid.equals(nsISupports) &&
!iid.equals(nsICommandLineHandler) &&
!iid.equals(nsIFactory))
throw Components.errors.NS_ERROR_NO_INTERFACE;
return this;
},
/* nsICommandLineHandler */
handle : function dch_handle(cmdLine) {
var urilist = [];
try {
var ar;
while ((ar = cmdLine.handleFlagWithParam("url", false))) {
urilist.push(resolveURIInternal(cmdLine, ar));
}
}
catch (e) {
Components.utils.reportError(e);
}
var count = cmdLine.length;
for (var i = 0; i < count; ++i) {
var curarg = cmdLine.getArgument(i);
if (curarg.match(/^-/)) {
Components.utils.reportError("Warning: unrecognized command line flag " + curarg + "\n");
// To emulate the pre-nsICommandLine behavior, we ignore
// the argument after an unrecognized flag.
++i;
} else {
try {
urilist.push(resolveURIInternal(cmdLine, curarg));
}
catch (e) {
Components.utils.reportError("Error opening URI '" + curarg + "' from the command line: " + e + "\n");
}
}
}
if (urilist.length) {
if (cmdLine.state != nsICommandLine.STATE_INITIAL_LAUNCH &&
urilist.length == 1) {
// Try to find an existing window and load our URI into the
// current tab, new tab, or new window as prefs determine.
try {
handURIToExistingBrowser(urilist[0], nsIBrowserDOMWindow.OPEN_DEFAULTWINDOW);
return;
}
catch (e) {
}
}
var speclist = [];
for (var uri in urilist) {
if (shouldLoadURI(urilist[uri]))
speclist.push(urilist[uri].spec);
}
if (speclist.length) {
openWindow(null, nsBrowserContentHandler.chromeURL, "_blank",
"chrome,dialog=no,all" + nsBrowserContentHandler.getFeatures(cmdLine),
speclist.join("|"));
}
}
else if (!cmdLine.preventDefault) {
openWindow(null, nsBrowserContentHandler.chromeURL, "_blank",
"chrome,dialog=no,all" + nsBrowserContentHandler.getFeatures(cmdLine),
nsBrowserContentHandler.defaultArgs);
}
},
// XXX localize me... how?
helpInfo : "Usage: firefox [-flags] [<url>]\n",
/* nsIFactory */
createInstance: function dch_CI(outer, iid) {
if (outer != null)
throw Components.results.NS_ERROR_NO_AGGREGATION;
return this.QueryInterface(iid);
},
lockFactory : function dch_lock(lock) {
/* no-op */
}
};
const dch_contractID = "@mozilla.org/browser/final-clh;1";
const dch_CID = Components.ID("{47cd0651-b1be-4a0f-b5c4-10e5a573ef71}");
var Module = {
/* nsISupports */
QueryInterface: function mod_QI(iid) {
if (iid.equals(Components.interfaces.nsIModule) ||
iid.equals(Components.interfaces.nsISupports))
return this;
throw Components.results.NS_ERROR_NO_INTERFACE;
},
/* nsIModule */
getClassObject: function mod_getco(compMgr, cid, iid) {
if (cid.equals(bch_CID))
return nsBrowserContentHandler.QueryInterface(iid);
if (cid.equals(dch_CID))
return nsDefaultCommandLineHandler.QueryInterface(iid);
throw Components.results.NS_ERROR_NO_INTERFACE;
},
registerSelf: function mod_regself(compMgr, fileSpec, location, type) {
var compReg =
compMgr.QueryInterface( Components.interfaces.nsIComponentRegistrar );
compReg.registerFactoryLocation( bch_CID,
"nsBrowserContentHandler",
bch_contractID,
fileSpec,
location,
type );
compReg.registerFactoryLocation( dch_CID,
"nsDefaultCommandLineHandler",
dch_contractID,
fileSpec,
location,
type );
function registerType(contentType) {
compReg.registerFactoryLocation( bch_CID,
"Browser Cmdline Handler",
CONTRACTID_PREFIX + contentType,
fileSpec,
location,
type );
}
registerType("text/html");
registerType("application/vnd.mozilla.xul+xml");
#ifdef MOZ_SVG
registerType("image/svg+xml");
#endif
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",
"m-browser",
bch_contractID, true, true);
catMan.addCategoryEntry("command-line-handler",
"x-default",
dch_contractID, true, true);
},
unregisterSelf : function mod_unregself(compMgr, location, type) {
var compReg = compMgr.QueryInterface(nsIComponentRegistrar);
compReg.unregisterFactoryLocation(bch_CID, location);
compReg.unregisterFactoryLocation(dch_CID, location);
var catMan = Components.classes["@mozilla.org/categorymanager;1"]
.getService(nsICategoryManager);
catMan.deleteCategoryEntry("command-line-handler",
"m-browser", true);
catMan.deleteCategoryEntry("command-line-handler",
"x-default", true);
},
canUnload: function(compMgr) {
return true;
}
};
// NSGetModule: Return the nsIModule object.
function NSGetModule(compMgr, fileSpec) {
return Module;
}