The Tor Browser: browser/base/content/utilityOverlay.js@6474c204b198 (annotated)

browser/base/content/utilityOverlay.js@6474c204b198 (annotated)

browser/base/content/utilityOverlay.js

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 # -*- Mode: javascript; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 // Services = object with smart getters for common XPCOM services
 Components.utils.import("resource://gre/modules/Services.jsm");
 Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
 Components.utils.import("resource://gre/modules/PrivateBrowsingUtils.jsm");
 Components.utils.import("resource:///modules/RecentWindow.jsm");
 XPCOMUtils.defineLazyGetter(this, "BROWSER_NEW_TAB_URL", function () {
   const PREF = "browser.newtab.url";
   function getNewTabPageURL() {
     if (!Services.prefs.prefHasUserValue(PREF)) {
       if (PrivateBrowsingUtils.isWindowPrivate(window) &&
           !PrivateBrowsingUtils.permanentPrivateBrowsing)
         return "about:privatebrowsing";
     }
     let url = Services.prefs.getComplexValue(PREF, Ci.nsISupportsString).data;
     return url || "about:blank";
   }
   function update() {
     BROWSER_NEW_TAB_URL = getNewTabPageURL();
   }
   Services.prefs.addObserver(PREF, update, false);
   addEventListener("unload", function onUnload() {
     removeEventListener("unload", onUnload);
     Services.prefs.removeObserver(PREF, update);
   });
   return getNewTabPageURL();
 });
 var TAB_DROP_TYPE = "application/x-moz-tabbrowser-tab";
 var gBidiUI = false;
 /**
  * Determines whether the given url is considered a special URL for new tabs.
  */
 function isBlankPageURL(aURL) {
   return aURL == "about:blank" || aURL == BROWSER_NEW_TAB_URL;
 }
 function getBrowserURL()
 {
   return "chrome://browser/content/browser.xul";
 }
 function getTopWin(skipPopups) {
   // If this is called in a browser window, use that window regardless of
   // whether it's the frontmost window, since commands can be executed in
   // background windows (bug 626148).
   if (top.document.documentElement.getAttribute("windowtype") == "navigator:browser" &&
       (!skipPopups || top.toolbar.visible))
     return top;
   let isPrivate = PrivateBrowsingUtils.isWindowPrivate(window);
   return RecentWindow.getMostRecentBrowserWindow({private: isPrivate,
                                                   allowPopups: !skipPopups});
 }
 function openTopWin(url) {
   /* deprecated */
   openUILinkIn(url, "current");
 }
 function getBoolPref(prefname, def)
 {
   try {
     return Services.prefs.getBoolPref(prefname);
   }
   catch(er) {
     return def;
   }
 }
 /* openUILink handles clicks on UI elements that cause URLs to load.
  *
  * As the third argument, you may pass an object with the same properties as
  * accepted by openUILinkIn, plus "ignoreButton" and "ignoreAlt".
  */
 function openUILink(url, event, aIgnoreButton, aIgnoreAlt, aAllowThirdPartyFixup,
                     aPostData, aReferrerURI) {
   let params;
   if (aIgnoreButton && typeof aIgnoreButton == "object") {
     params = aIgnoreButton;
     // don't forward "ignoreButton" and "ignoreAlt" to openUILinkIn
     aIgnoreButton = params.ignoreButton;
     aIgnoreAlt = params.ignoreAlt;
     delete params.ignoreButton;
     delete params.ignoreAlt;
   } else {
     params = {
       allowThirdPartyFixup: aAllowThirdPartyFixup,
       postData: aPostData,
       referrerURI: aReferrerURI,
       initiatingDoc: event ? event.target.ownerDocument : null
     };
   }
   let where = whereToOpenLink(event, aIgnoreButton, aIgnoreAlt);
   openUILinkIn(url, where, params);
 }
 /* whereToOpenLink() looks at an event to decide where to open a link.
  *
  * The event may be a mouse event (click, double-click, middle-click) or keypress event (enter).
  *
  * On Windows, the modifiers are:
  * Ctrl        new tab, selected
  * Shift       new window
  * Ctrl+Shift  new tab, in background
  * Alt         save
  *
  * Middle-clicking is the same as Ctrl+clicking (it opens a new tab).
  *
  * Exceptions:
  * - Alt is ignored for menu items selected using the keyboard so you don't accidentally save stuff.
  *    (Currently, the Alt isn't sent here at all for menu items, but that will change in bug 126189.)
  * - Alt is hard to use in context menus, because pressing Alt closes the menu.
  * - Alt can't be used on the bookmarks toolbar because Alt is used for "treat this as something draggable".
  * - The button is ignored for the middle-click-paste-URL feature, since it's always a middle-click.
  */
 function whereToOpenLink( e, ignoreButton, ignoreAlt )
 {
   // This method must treat a null event like a left click without modifier keys (i.e.
   // e = { shiftKey:false, ctrlKey:false, metaKey:false, altKey:false, button:0 })
   // for compatibility purposes.
   if (!e)
     return "current";
   var shift = e.shiftKey;
   var ctrl =  e.ctrlKey;
   var meta =  e.metaKey;
   var alt  =  e.altKey && !ignoreAlt;
   // ignoreButton allows "middle-click paste" to use function without always opening in a new window.
   var middle = !ignoreButton && e.button == 1;
   var middleUsesTabs = getBoolPref("browser.tabs.opentabfor.middleclick", true);
   // Don't do anything special with right-mouse clicks.  They're probably clicks on context menu items.
 #ifdef XP_MACOSX
   if (meta || (middle && middleUsesTabs))
 #else
   if (ctrl || (middle && middleUsesTabs))
 #endif
     return shift ? "tabshifted" : "tab";
   if (alt && getBoolPref("browser.altClickSave", false))
     return "save";
   if (shift || (middle && !middleUsesTabs))
     return "window";
   return "current";
 }
 /* openUILinkIn opens a URL in a place specified by the parameter |where|.
  *
  * |where| can be:
  *  "current"     current tab            (if there aren't any browser windows, then in a new window instead)
  *  "tab"         new tab                (if there aren't any browser windows, then in a new window instead)
  *  "tabshifted"  same as "tab" but in background if default is to select new tabs, and vice versa
  *  "window"      new window
  *  "save"        save to disk (with no filename hint!)
  *
  * aAllowThirdPartyFixup controls whether third party services such as Google's
  * I Feel Lucky are allowed to interpret this URL. This parameter may be
  * undefined, which is treated as false.
  *
  * Instead of aAllowThirdPartyFixup, you may also pass an object with any of
  * these properties:
  *   allowThirdPartyFixup (boolean)
  *   postData             (nsIInputStream)
  *   referrerURI          (nsIURI)
  *   relatedToCurrent     (boolean)
  *   skipTabAnimation     (boolean)
  */
 function openUILinkIn(url, where, aAllowThirdPartyFixup, aPostData, aReferrerURI) {
   var params;
   if (arguments.length == 3 && typeof arguments[2] == "object") {
     params = aAllowThirdPartyFixup;
   } else {
     params = {
       allowThirdPartyFixup: aAllowThirdPartyFixup,
       postData: aPostData,
       referrerURI: aReferrerURI
     };
   }
   params.fromChrome = true;
   openLinkIn(url, where, params);
 }
 function openLinkIn(url, where, params) {
   if (!where || !url)
     return;
   var aFromChrome           = params.fromChrome;
   var aAllowThirdPartyFixup = params.allowThirdPartyFixup;
   var aPostData             = params.postData;
   var aCharset              = params.charset;
   var aReferrerURI          = params.referrerURI;
   var aRelatedToCurrent     = params.relatedToCurrent;
   var aDisableMCB           = params.disableMCB;
   var aInBackground         = params.inBackground;
   var aDisallowInheritPrincipal = params.disallowInheritPrincipal;
   var aInitiatingDoc        = params.initiatingDoc;
   var aIsPrivate            = params.private;
   var aSkipTabAnimation     = params.skipTabAnimation;
   if (where == "save") {
     if (!aInitiatingDoc) {
       Components.utils.reportError("openUILink/openLinkIn was called with " +
         "where == 'save' but without initiatingDoc.  See bug 814264.");
       return;
     }
     saveURL(url, null, null, true, null, aReferrerURI, aInitiatingDoc);
     return;
   }
   const Cc = Components.classes;
   const Ci = Components.interfaces;
   var w = getTopWin();
   if ((where == "tab" || where == "tabshifted") &&
       w && !w.toolbar.visible) {
     w = getTopWin(true);
     aRelatedToCurrent = false;
   }
   if (!w || where == "window") {
     var sa = Cc["@mozilla.org/supports-array;1"].
              createInstance(Ci.nsISupportsArray);
     var wuri = Cc["@mozilla.org/supports-string;1"].
                createInstance(Ci.nsISupportsString);
     wuri.data = url;
     let charset = null;
     if (aCharset) {
       charset = Cc["@mozilla.org/supports-string;1"]
                   .createInstance(Ci.nsISupportsString);
       charset.data = "charset=" + aCharset;
     }
     var allowThirdPartyFixupSupports = Cc["@mozilla.org/supports-PRBool;1"].
                                        createInstance(Ci.nsISupportsPRBool);
     allowThirdPartyFixupSupports.data = aAllowThirdPartyFixup;
     sa.AppendElement(wuri);
     sa.AppendElement(charset);
     sa.AppendElement(aReferrerURI);
     sa.AppendElement(aPostData);
     sa.AppendElement(allowThirdPartyFixupSupports);
     let features = "chrome,dialog=no,all";
     if (aIsPrivate) {
       features += ",private";
     }
     Services.ww.openWindow(w || window, getBrowserURL(), null, features, sa);
     return;
   }
   let loadInBackground = where == "current" ? false : aInBackground;
   if (loadInBackground == null) {
     loadInBackground = aFromChrome ?
                          false :
                          getBoolPref("browser.tabs.loadInBackground");
   }
   if (where == "current" && w.gBrowser.selectedTab.pinned) {
     try {
       let uriObj = Services.io.newURI(url, null, null);
       if (!uriObj.schemeIs("javascript") &&
           w.gBrowser.currentURI.host != uriObj.host) {
         where = "tab";
         loadInBackground = false;
       }
     } catch (err) {
       where = "tab";
       loadInBackground = false;
     }
   }
   // Raise the target window before loading the URI, since loading it may
   // result in a new frontmost window (e.g. "javascript:window.open('');").
   w.focus();
   switch (where) {
   case "current":
     let flags = Ci.nsIWebNavigation.LOAD_FLAGS_NONE;
     if (aAllowThirdPartyFixup) {
       flags |= Ci.nsIWebNavigation.LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP;
       flags |= Ci.nsIWebNavigation.LOAD_FLAGS_FIXUP_SCHEME_TYPOS;
     }
     if (aDisallowInheritPrincipal)
       flags |= Ci.nsIWebNavigation.LOAD_FLAGS_DISALLOW_INHERIT_OWNER;
     w.gBrowser.loadURIWithFlags(url, flags, aReferrerURI, null, aPostData);
     break;
   case "tabshifted":
     loadInBackground = !loadInBackground;
     // fall through
   case "tab":
     let browser = w.gBrowser;
     browser.loadOneTab(url, {
                        referrerURI: aReferrerURI,
                        charset: aCharset,
                        postData: aPostData,
                        inBackground: loadInBackground,
                        allowThirdPartyFixup: aAllowThirdPartyFixup,
                        relatedToCurrent: aRelatedToCurrent,
                        skipAnimation: aSkipTabAnimation,
                        disableMCB: aDisableMCB});
     break;
   }
   w.gBrowser.selectedBrowser.focus();
   if (!loadInBackground && w.isBlankPageURL(url))
     w.focusAndSelectUrlBar();
 }
 // Used as an onclick handler for UI elements with link-like behavior.
 // e.g. onclick="checkForMiddleClick(this, event);"
 function checkForMiddleClick(node, event) {
   // We should be using the disabled property here instead of the attribute,
   // but some elements that this function is used with don't support it (e.g.
   // menuitem).
   if (node.getAttribute("disabled") == "true")
     return; // Do nothing
   if (event.button == 1) {
     /* Execute the node's oncommand or command.
      *
      * XXX: we should use node.oncommand(event) once bug 246720 is fixed.
      */
     var target = node.hasAttribute("oncommand") ? node :
                  node.ownerDocument.getElementById(node.getAttribute("command"));
     var fn = new Function("event", target.getAttribute("oncommand"));
     fn.call(target, event);
     // If the middle-click was on part of a menu, close the menu.
     // (Menus close automatically with left-click but not with middle-click.)
     closeMenus(event.target);
   }
 }
 // Closes all popups that are ancestors of the node.
 function closeMenus(node)
 {
   if ("tagName" in node) {
     if (node.namespaceURI == "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
     && (node.tagName == "menupopup" || node.tagName == "popup"))
       node.hidePopup();
     closeMenus(node.parentNode);
   }
 }
 // Gather all descendent text under given document node.
 function gatherTextUnder ( root )
 {
   var text = "";
   var node = root.firstChild;
   var depth = 1;
   while ( node && depth > 0 ) {
     // See if this node is text.
     if ( node.nodeType == Node.TEXT_NODE ) {
       // Add this text to our collection.
       text += " " + node.data;
     } else if ( node instanceof HTMLImageElement) {
       // If it has an "alt" attribute, add that.
       var altText = node.getAttribute( "alt" );
       if ( altText && altText != "" ) {
         text += " " + altText;
       }
     }
     // Find next node to test.
     // First, see if this node has children.
     if ( node.hasChildNodes() ) {
       // Go to first child.
       node = node.firstChild;
       depth++;
     } else {
       // No children, try next sibling (or parent next sibling).
       while ( depth > 0 && !node.nextSibling ) {
         node = node.parentNode;
         depth--;
       }
       if ( node.nextSibling ) {
         node = node.nextSibling;
       }
     }
   }
   // Strip leading and tailing whitespace.
   text = text.trim();
   // Compress remaining whitespace.
   text = text.replace( /\s+/g, " " );
   return text;
 }
 function getShellService()
 {
   var shell = null;
   try {
     shell = Components.classes["@mozilla.org/browser/shell-service;1"]
       .getService(Components.interfaces.nsIShellService);
   } catch (e) {
   }
   return shell;
 }
 function isBidiEnabled() {
   // first check the pref.
   if (getBoolPref("bidi.browser.ui", false))
     return true;
   // then check intl.uidirection.<locale>
   var chromeReg = Components.classes["@mozilla.org/chrome/chrome-registry;1"].
                   getService(Components.interfaces.nsIXULChromeRegistry);
   if (chromeReg.isLocaleRTL("global"))
     return true;
   // now see if the system locale is an RTL one.
   var rv = false;
   try {
     var localeService = Components.classes["@mozilla.org/intl/nslocaleservice;1"]
                                   .getService(Components.interfaces.nsILocaleService);
     var systemLocale = localeService.getSystemLocale().getCategory("NSILOCALE_CTYPE").substr(0,3);
     switch (systemLocale) {
       case "ar-":
       case "he-":
       case "fa-":
       case "ug-":
       case "ur-":
       case "syr":
         rv = true;
         Services.prefs.setBoolPref("bidi.browser.ui", true);
     }
   } catch (e) {}
   return rv;
 }
 function openAboutDialog() {
   var enumerator = Services.wm.getEnumerator("Browser:About");
   while (enumerator.hasMoreElements()) {
     // Only open one about window (Bug 599573)
     let win = enumerator.getNext();
     if (win.closed) {
       continue;
     }
     win.focus();
     return;
   }
 #ifdef XP_WIN
   var features = "chrome,centerscreen,dependent";
 #elifdef XP_MACOSX
   var features = "chrome,resizable=no,minimizable=no";
 #else
   var features = "chrome,centerscreen,dependent,dialog=no";
 #endif
   window.openDialog("chrome://browser/content/aboutDialog.xul", "", features);
 }
 function openPreferences(paneID, extraArgs)
 {
   function switchToAdvancedSubPane(doc) {
     if (extraArgs && extraArgs["advancedTab"]) {
       let advancedPaneTabs = doc.getElementById("advancedPrefs");
       advancedPaneTabs.selectedTab = doc.getElementById(extraArgs["advancedTab"]);
     }
   }
   if (getBoolPref("browser.preferences.inContent")) {
     let win = Services.wm.getMostRecentWindow("navigator:browser");
     if (!win) {
       return;
     }
     let newLoad = !win.switchToTabHavingURI("about:preferences", true);
     let browser = win.gBrowser.selectedBrowser;
     function switchToPane() {
       if (paneID) {
         browser.contentWindow.selectCategory(paneID);
       }
       switchToAdvancedSubPane(browser.contentDocument);
     }
     if (newLoad) {
       browser.addEventListener("load", function onload() {
         browser.removeEventListener("load", onload, true);
         switchToPane();
       }, true);
     } else {
       switchToPane();
     }
   } else {
     var instantApply = getBoolPref("browser.preferences.instantApply", false);
     var features = "chrome,titlebar,toolbar,centerscreen" + (instantApply ? ",dialog=no" : ",modal");
     var win = Services.wm.getMostRecentWindow("Browser:Preferences");
     if (win) {
       win.focus();
       if (paneID) {
         var pane = win.document.getElementById(paneID);
         win.document.documentElement.showPane(pane);
       }
       switchToAdvancedSubPane(win.document);
     } else {
       openDialog("chrome://browser/content/preferences/preferences.xul",
                  "Preferences", features, paneID, extraArgs);
     }
   }
 }
 function openAdvancedPreferences(tabID)
 {
   openPreferences("paneAdvanced", { "advancedTab" : tabID });
 }
 /**
  * Opens the troubleshooting information (about:support) page for this version
  * of the application.
  */
 function openTroubleshootingPage()
 {
   openUILinkIn("about:support", "tab");
 }
 #ifdef MOZ_SERVICES_HEALTHREPORT
 /**
  * Opens the troubleshooting information (about:support) page for this version
  * of the application.
  */
 function openHealthReport()
 {
   openUILinkIn("about:healthreport", "tab");
 }
 #endif
 /**
  * Opens the feedback page for this version of the application.
  */
 function openFeedbackPage()
 {
   var url = Components.classes["@mozilla.org/toolkit/URLFormatterService;1"]
                       .getService(Components.interfaces.nsIURLFormatter)
                       .formatURLPref("app.feedback.baseURL");
   openUILinkIn(url, "tab");
 }
 function openTourPage()
 {
   let scope = {}
   Components.utils.import("resource:///modules/UITour.jsm", scope);
   openUILinkIn(scope.UITour.url, "tab");
 }
 function buildHelpMenu()
 {
   // Enable/disable the "Report Web Forgery" menu item.
   if (typeof gSafeBrowsing != "undefined")
     gSafeBrowsing.setReportPhishingMenu();
 }
 function isElementVisible(aElement)
 {
   if (!aElement)
     return false;
   // If aElement or a direct or indirect parent is hidden or collapsed,
   // height, width or both will be 0.
   var bo = aElement.boxObject;
   return (bo.height > 0 && bo.width > 0);
 }
 function makeURLAbsolute(aBase, aUrl)
 {
   // Note:  makeURI() will throw if aUri is not a valid URI
   return makeURI(aUrl, null, makeURI(aBase)).spec;
 }
 /**
  * openNewTabWith: opens a new tab with the given URL.
  *
  * @param aURL
  *        The URL to open (as a string).
  * @param aDocument
  *        Note this parameter is now ignored. There is no security check & no
  *        referrer header derived from aDocument (null case).
  * @param aPostData
  *        Form POST data, or null.
  * @param aEvent
  *        The triggering event (for the purpose of determining whether to open
  *        in the background), or null.
  * @param aAllowThirdPartyFixup
  *        If true, then we allow the URL text to be sent to third party services
  *        (e.g., Google's I Feel Lucky) for interpretation. This parameter may
  *        be undefined in which case it is treated as false.
  * @param [optional] aReferrer
  *        This will be used as the referrer. There will be no security check.
  */
 function openNewTabWith(aURL, aDocument, aPostData, aEvent,
                         aAllowThirdPartyFixup, aReferrer) {
   // As in openNewWindowWith(), we want to pass the charset of the
   // current document over to a new tab.
   let originCharset = null;
   if (document.documentElement.getAttribute("windowtype") == "navigator:browser")
     originCharset = gBrowser.selectedBrowser.characterSet;
   openLinkIn(aURL, aEvent && aEvent.shiftKey ? "tabshifted" : "tab",
              { charset: originCharset,
                postData: aPostData,
                allowThirdPartyFixup: aAllowThirdPartyFixup,
                referrerURI: aReferrer });
 }
 /**
  * @param aDocument
  *        Note this parameter is ignored. See openNewTabWith()
  */
 function openNewWindowWith(aURL, aDocument, aPostData, aAllowThirdPartyFixup, aReferrer) {
   // Extract the current charset menu setting from the current document and
   // use it to initialize the new browser window...
   let originCharset = null;
   if (document.documentElement.getAttribute("windowtype") == "navigator:browser")
     originCharset = gBrowser.selectedBrowser.characterSet;
   openLinkIn(aURL, "window",
              { charset: originCharset,
                postData: aPostData,
                allowThirdPartyFixup: aAllowThirdPartyFixup,
                referrerURI: aReferrer });
 }
 // aCalledFromModal is optional
 function openHelpLink(aHelpTopic, aCalledFromModal, aWhere) {
   var url = Components.classes["@mozilla.org/toolkit/URLFormatterService;1"]
                       .getService(Components.interfaces.nsIURLFormatter)
                       .formatURLPref("app.support.baseURL");
   url += aHelpTopic;
   var where = aWhere;
   if (!aWhere)
     where = aCalledFromModal ? "window" : "tab";
   openUILinkIn(url, where);
 }
 function openPrefsHelp() {
   // non-instant apply prefwindows are usually modal, so we can't open in the topmost window,
   // since its probably behind the window.
   var instantApply = getBoolPref("browser.preferences.instantApply");
   var helpTopic = document.getElementsByTagName("prefwindow")[0].currentPane.helpTopic;
   openHelpLink(helpTopic, !instantApply);
 }
 function trimURL(aURL) {
   // This function must not modify the given URL such that calling
   // nsIURIFixup::createFixupURI with the result will produce a different URI.
   return aURL /* remove single trailing slash for http/https/ftp URLs */
              .replace(/^((?:http|https|ftp):\/\/[^/]+)\/$/, "$1")
               /* remove http:// unless the host starts with "ftp\d*\." or contains "@" */
              .replace(/^http:\/\/((?!ftp\d*\.)[^\/@]+(?:\/|$))/, "$1");
 }