The Tor Browser: browser/metro/base/content/bindings/urlbar.xml@6474c204b198 (annotated)

browser/metro/base/content/bindings/urlbar.xml@6474c204b198 (annotated)

browser/metro/base/content/bindings/urlbar.xml

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.

 <?xml version="1.0" encoding="Windows-1252" ?>
 <!-- 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/. -->
 <!DOCTYPE bindings [
 <!ENTITY % browserDTD SYSTEM "chrome://browser/locale/browser.dtd">
 %browserDTD;
 ]>
 <bindings
     xmlns="http://www.mozilla.org/xbl"
     xmlns:xbl="http://www.mozilla.org/xbl"
     xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
   <binding id="urlbar" extends="chrome://global/content/bindings/autocomplete.xml#autocomplete">
     <implementation implements="nsIObserver">
       <constructor>
         <![CDATA[
           this._mayFormat = Services.prefs.getBoolPref("browser.urlbar.formatting.enabled");
           this._mayTrimURLs = Services.prefs.getBoolPref("browser.urlbar.trimURLs");
           this._maySelectAll = Services.prefs.getBoolPref("browser.urlbar.doubleClickSelectsAll");
           Services.prefs.addObserver("browser.urlbar.formatting.enabled", this, false);
           Services.prefs.addObserver("browser.urlbar.trimURLs", this, false);
           Services.prefs.addObserver("browser.urlbar.doubleClickSelectsAll", this, false);
           this.inputField.controllers.insertControllerAt(0, this._copyCutValueController);
           this.minResultsForPopup = 0;
           this.popup._input = this;
         ]]>
       </constructor>
       <destructor>
         <![CDATA[
           Services.prefs.removeObserver("browser.urlbar.formatting.enabled", this);
           Services.prefs.removeObserver("browser.urlbar.trimURLs", this);
           Services.prefs.removeObserver("browser.urlbar.doubleClickSelectsAll", this);
         ]]>
       </destructor>
       <field name="_mayFormat"/>
       <field name="_mayTrimURLs"/>
       <field name="_maySelectAll"/>
       <field name="_lastKnownGoodURL"/>
       <method name="openPopup">
         <body>
           <![CDATA[
             this.popup.openAutocompletePopup(this, null);
           ]]>
         </body>
       </method>
       <method name="closePopup">
         <body>
           <![CDATA[
             this.popup.closePopup(this, null);
           ]]>
         </body>
       </method>
       <!-- URI Display: Domain Highlighting -->
       <method name="_clearFormatting">
         <body>
           <![CDATA[
             let controller = this.editor.selectionController;
             let selection = controller.getSelection(controller.SELECTION_URLSECONDARY);
             selection.removeAllRanges();
           ]]>
         </body>
       </method>
       <method name="formatValue">
         <body>
           <![CDATA[
             if (!this._mayFormat || this.isEditing)
               return;
             let controller = this.editor.selectionController;
             let selection = controller.getSelection(controller.SELECTION_URLSECONDARY);
             selection.removeAllRanges();
             let textNode = this.editor.rootElement.firstChild;
             let value = textNode.textContent;
             let protocol = value.match(/^[a-z\d.+\-]+:(?=[^\d])/);
             if (protocol &&
                 ["http:", "https:", "ftp:"].indexOf(protocol[0]) == -1)
               return;
             let matchedURL = value.match(/^((?:[a-z]+:\/\/)?(?:[^\/]+@)?)(.+?)(?::\d+)?(?:\/|$)/);
             if (!matchedURL)
               return;
             let [, preDomain, domain] = matchedURL;
             let baseDomain = domain;
             let subDomain = "";
             // getBaseDomainFromHost doesn't recognize IPv6 literals in brackets as IPs (bug 667159)
             if (domain[0] != "[") {
               try {
                 baseDomain = Services.eTLD.getBaseDomainFromHost(domain);
                 if (!domain.endsWith(baseDomain)) {
                   // getBaseDomainFromHost converts its resultant to ACE.
                   let IDNService = Cc["@mozilla.org/network/idn-service;1"]
                                    .getService(Ci.nsIIDNService);
                   baseDomain = IDNService.convertACEtoUTF8(baseDomain);
                 }
               } catch (e) {}
             }
             if (baseDomain != domain) {
               subDomain = domain.slice(0, -baseDomain.length);
             }
             let rangeLength = preDomain.length + subDomain.length;
             if (rangeLength) {
               let range = document.createRange();
               range.setStart(textNode, 0);
               range.setEnd(textNode, rangeLength);
               selection.addRange(range);
             }
             let startRest = preDomain.length + domain.length;
             if (startRest < value.length) {
               let range = document.createRange();
               range.setStart(textNode, startRest);
               range.setEnd(textNode, value.length);
               selection.addRange(range);
             }
           ]]>
         </body>
       </method>
       <!-- URI Display: Scheme and Trailing Slash Triming -->
       <method name="_trimURL">
         <parameter name="aURL"/>
         <body>
           <![CDATA[
             // This function must not modify the given URL such that calling
             // nsIURIFixup::createFixupURI with the rfdesult 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");
           ]]>
         </body>
       </method>
       <method name="_getSelectedValueForClipboard">
         <body>
           <![CDATA[
             // Grab the actual input field's value, not our value, which could include moz-action:
             let inputVal = this.inputField.value;
             let selectedVal = inputVal.substring(this.selectionStart, this.selectionEnd);
             // If the selection doesn't start at the beginning or doesn't span the full domain or
             // the URL bar is modified, nothing else to do here.
             if (this.selectionStart > 0 || this.valueIsTyped)
               return selectedVal;
             // The selection doesn't span the full domain if it doesn't contain a slash and is
             // followed by some character other than a slash.
             if (!selectedVal.contains("/")) {
               let remainder = inputVal.replace(selectedVal, "");
               if (remainder != "" && remainder[0] != "/")
                 return selectedVal;
             }
             let uriFixup = Cc["@mozilla.org/docshell/urifixup;1"].getService(Ci.nsIURIFixup);
             let uri;
             try {
               uri = uriFixup.createFixupURI(inputVal, Ci.nsIURIFixup.FIXUP_FLAG_NONE);
             } catch (e) {}
             if (!uri)
               return selectedVal;
             // Only copy exposable URIs
             try {
               uri = uriFixup.createExposableURI(uri);
             } catch (ex) {}
             // If the entire URL is selected, just use the actual loaded URI.
             if (inputVal == selectedVal) {
               // ... but only if  isn't a javascript: or data: URI, since those
               // are hard to read when encoded
               if (!uri.schemeIs("javascript") && !uri.schemeIs("data")) {
                 // Parentheses are known to confuse third-party applications (bug 458565).
                 selectedVal = uri.spec.replace(/[()]/g, function (c) escape(c));
               }
               return selectedVal;
             }
             // Just the beginning of the URL is selected, check for a trimmed value
             let spec = uri.spec;
             let trimmedSpec = this._trimURL(spec);
             if (spec != trimmedSpec) {
               // Prepend the portion that trimURL removed from the beginning.
               // This assumes trimURL will only truncate the URL at
               // the beginning or end (or both).
               let trimmedSegments = spec.split(trimmedSpec);
               selectedVal = trimmedSegments[0] + selectedVal;
             }
             return selectedVal;
           ]]>
         </body>
       </method>
       <field name="_copyCutValueController">
         <![CDATA[
           ({
             urlbar: this,
             doCommand: function(aCommand) {
               let urlbar = this.urlbar;
               let val = urlbar._getSelectedValueForClipboard();
               if (!val)
                 return;
               if (aCommand == "cmd_cut" && this.isCommandEnabled(aCommand)) {
                 let start = urlbar.selectionStart;
                 let end = urlbar.selectionEnd;
                 urlbar.inputField.value = urlbar.inputField.value.substring(0, start) +
                                           urlbar.inputField.value.substring(end);
                 urlbar.selectionStart = urlbar.selectionEnd = start;
               }
               Cc["@mozilla.org/widget/clipboardhelper;1"]
                 .getService(Ci.nsIClipboardHelper)
                 .copyString(val, document);
             },
             supportsCommand: function(aCommand) {
               switch (aCommand) {
                 case "cmd_copy":
                 case "cmd_cut":
                   return true;
               }
               return false;
             },
             isCommandEnabled: function(aCommand) {
               let urlbar = this.urlbar;
               return this.supportsCommand(aCommand) &&
                      (aCommand != "cmd_cut" || !urlbar.readOnly) &&
                      urlbar.selectionStart < urlbar.selectionEnd;
             },
             onEvent: function(aEventName) {}
           })
         ]]>
       </field>
       <method name="trimValue">
         <parameter name="aURL"/>
         <body>
           <![CDATA[
             return (this._mayTrimURLs) ? this._trimURL(aURL) : aURL;
           ]]>
         </body>
       </method>
       <!-- URI Editing -->
       <property name="isEditing" readonly="true">
         <getter>
           <![CDATA[
             return Elements.urlbarState.hasAttribute("editing");
           ]]>
         </getter>
       </property>
       <method name="beginEditing">
         <parameter name="aShouldDismiss"/>
         <body>
           <![CDATA[
             if (this.isEditing)
               return;
             Elements.urlbarState.setAttribute("editing", true);
             this._lastKnownGoodURL = this.value;
             if (!this.focused) {
               this.focus();
               // If we force focus, ensure we're visible.
               if (ContextUI.displayNavbar()) {
                 // If we forced visibility, ensure we're positioned above keyboard.
                 // (Previous "blur" may have forced us down behind it.)
                 ContentAreaObserver.updateAppBarPosition();
               }
             }
             this._clearFormatting();
             this.select();
             if (aShouldDismiss)
               ContextUI.dismissTabs();
             if (!InputSourceHelper.isPrecise) {
               let inputRectangle = this.inputField.getBoundingClientRect();
               SelectionHelperUI.attachEditSession(ChromeSelectionHandler,
                   inputRectangle.left, inputRectangle.top, this);
             }
           ]]>
         </body>
       </method>
       <method name="endEditing">
         <parameter name="aShouldRevert"/>
         <body>
           <![CDATA[
             if (!this.isEditing)
               return;
             Elements.urlbarState.removeAttribute("editing");
             this.closePopup();
             this.formatValue();
             if (this.focused)
               this.blur();
             if (aShouldRevert)
               this.value = this._lastKnownGoodURL;
           ]]>
         </body>
       </method>
       <!-- URI Submission -->
       <method name="_canonizeURL">
         <parameter name="aURL"/>
         <parameter name="aTriggeringEvent"/>
         <body>
           <![CDATA[
             if (!aURL)
               return "";
             // Only add the suffix when the URL bar value isn't already "URL-like",
             // and only if we get a keyboard event, to match user expectations.
             if (/^\s*[^.:\/\s]+(?:\/.*|\s*)$/i.test(aURL)) {
               let accel = aTriggeringEvent.ctrlKey;
               let shift = aTriggeringEvent.shiftKey;
               let suffix = "";
               switch (true) {
                 case (accel && shift):
                   suffix = ".org/";
                   break;
                 case (shift):
                   suffix = ".net/";
                   break;
                 case (accel):
                   try {
                     suffix = gPrefService.getCharPref("browser.fixup.alternate.suffix");
                     if (suffix.charAt(suffix.length - 1) != "/")
                       suffix += "/";
                   } catch(e) {
                     suffix = ".com/";
                   }
                   break;
               }
               if (suffix) {
                 // trim leading/trailing spaces (bug 233205)
                 aURL = aURL.trim();
                 // Tack www. and suffix on.  If user has appended directories, insert
                 // suffix before them (bug 279035).  Be careful not to get two slashes.
                 let firstSlash = aURL.indexOf("/");
                 if (firstSlash >= 0) {
                   aURL = aURL.substring(0, firstSlash) + suffix + aURL.substring(firstSlash + 1);
                 } else {
                   aURL = aURL + suffix;
                 }
                 aURL = "http://www." + aURL;
               }
             }
             return aURL;
           ]]>
         </body>
       </method>
       <method name="submitURL">
         <parameter name="aEvent"/>
         <body>
           <![CDATA[
             // If the address was typed in by a user, tidy it up
             if (aEvent instanceof KeyEvent)
               this.value = this._canonizeURL(this.value, aEvent);
             this.endEditing();
             BrowserUI.goToURI(this.value);
             return true;
           ]]>
         </body>
       </method>
       <method name="submitSearch">
         <parameter name="anEngineName"/>
         <body>
           <![CDATA[
             this.endEditing();
             BrowserUI.doOpenSearch(anEngineName);
             return true;
           ]]>
         </body>
       </method>
       <!-- nsIObserver -->
       <method name="observe">
         <parameter name="aSubject"/>
         <parameter name="aTopic"/>
         <parameter name="aData"/>
         <body>
           <![CDATA[
             if (aTopic != "nsPref:changed")
               return;
             switch (aData) {
               case "browser.urlbar.formatting.enabled":
                 this._mayFormat = Services.prefs.getBoolPref(aData);
                 if (!this._mayFormat) this._clearFormatting();
                 break;
               case "browser.urlbar.trimURLs":
                 this._mayTrimURLs = Services.prefs.getBoolPref(aData);
                 break;
               case "browser.urlbar.doubleClickSelectsAll":
                 this._maySelectAll = Services.prefs.getBoolPref(aData);
                 break;
             }
           ]]>
         </body>
       </method>
     </implementation>
     <handlers>
       <!-- Entering editing mode -->
       <handler event="focus" phase="capturing">
         <![CDATA[
           this.beginEditing();
         ]]>
       </handler>
       <handler event="input" phase="capturing">
         <![CDATA[
           // Ensures that paste-and-go actually brings the URL bar into editing mode
           // and displays the half-height autocomplete popup.
           this.beginEditing();
           this.openPopup();
         ]]>
       </handler>
       <handler event="click" phase="capturing">
         <![CDATA[
           // workaround for bug 925457: taping browser chrome resets last tap
           // co-ordinates to 'undefined' so that we know not to shift the
           // browser when the keyboard is up in SelectionHandler's
           // _calcNewContentPosition().
           Browser.selectedTab.browser.messageManager.sendAsyncMessage(
               "Browser:ResetLastPos", {
                 xPos: null,
                 yPos: null
               });
           this.beginEditing(true);
         ]]>
       </handler>
       <!-- Editing mode behaviors -->
       <handler event="dblclick" phase="capturing">
         <![CDATA[
             if (this._maySelectAll) this.select();
         ]]>
       </handler>
       <handler event="contextmenu" phase="capturing">
         <![CDATA[
           let box = this.inputField.parentNode;
           box.showContextMenu(this, event, true);
         ]]>
       </handler>
       <!-- Leaving editing mode -->
       <handler event="blur" phase="capturing">
         <![CDATA[
           this.endEditing();
         ]]>
       </handler>
       <handler event="keypress" phase="capturing" keycode="VK_RETURN"
                modifiers="accel shift any">
         <![CDATA[
           if (this.popup.submitSelected())
             return;
           if (this.submitURL(event))
             return;
         ]]>
       </handler>
       <handler event="keypress" phase="capturing" keycode="VK_UP">
         <![CDATA[
           if (!this.popup.hasSelection) {
             // Treat the first up as a down key to trick handleKeyNavigation() to start
             // keyboard navigation on autocomplete popup.
             this.mController.handleKeyNavigation(KeyEvent.DOM_VK_DOWN);
             event.preventDefault();
           }
         ]]>
       </handler>
     </handlers>
   </binding>
   <binding id="urlbar-autocomplete">
     <content class="meta-section-container" pack="end">
       <xul:vbox class="meta-section" anonid="results-container" flex="2">
         <xul:label class="meta-section-title"
                    value="&autocompleteResultsHeader.label;"/>
         <richgrid anonid="results" rows="3" minSlots="8"
                   seltype="single" nocontext="true" deferlayout="true"/>
       </xul:vbox>
       <xul:vbox class="meta-section" flex="1">
         <xul:label anonid="searches-header" class="meta-section-title"/>
         <richgrid anonid="searches" rows="3" flex="1" search="true"
                   seltype="single" nocontext="true" deferlayout="true"/>
       </xul:vbox>
     </content>
     <implementation implements="nsIAutoCompletePopup, nsIObserver">
       <constructor>
         <![CDATA[
           this.hidden = true;
           Services.obs.addObserver(this, "browser-search-engine-modified", false);
           this._results.controller = this;
           this._searches.controller = this;
         ]]>
       </constructor>
       <destructor>
         <![CDATA[
           Services.obs.removeObserver(this, "browser-search-engine-modified");
         ]]>
       </destructor>
       <!-- nsIAutocompleteInput -->
       <field name="_input">null</field>
       <property name="input" readonly="true" onget="return this._input;"/>
       <property name="matchCount" readonly="true" onget="return this.input.controller.matchCount;"/>
       <property name="popupOpen" readonly="true" onget="return !this.hidden"/>
       <property name="overrideValue" readonly="true" onget="return null;"/>
       <property name="selectedItem">
         <getter>
           <![CDATA[
             return this._isGridBound(this._results) ? this._results.selectedItem : null;
           ]]>
         </getter>
         <setter>
           <![CDATA[
             if (this._isGridBound(this._results)) {
               this._results.selectedItem = val;
             }
           ]]>
         </setter>
       </property>
       <property name="selectedIndex">
         <getter>
           <![CDATA[
             return this._isGridBound(this._results) ? this._results.selectedIndex : -1;
           ]]>
         </getter>
         <setter>
           <![CDATA[
             if (this._isGridBound(this._results)) {
               this._results.selectedIndex = val;
             }
           ]]>
         </setter>
       </property>
       <property name="hasSelection">
         <getter>
           <![CDATA[
             if (!this._isGridBound(this._results) ||
               !this._isGridBound(this._searches))
               return false;
             return (this._results.selectedIndex >= 0 ||
               this._searches.selectedIndex >= 0);
           ]]>
         </getter>
       </property>
       <method name="openAutocompletePopup">
         <parameter name="aInput"/>
         <parameter name="aElement"/>
         <body>
           <![CDATA[
             if (this.popupOpen)
               return;
             ContextUI.dismissContextAppbar();
             this._input = aInput;
             this._grid = this._results;
             this.clearSelection();
             this.invalidate();
             let viewstate = this.getAttribute("viewstate");
             switch (viewstate) {
               case "portrait":
               case "snapped":
                 this._results.setAttribute("vertical", true);
                 break;
               default:
                 this._results.removeAttribute("vertical");
                 break;
             }
             this._results.arrangeItemsNow();
             this._searches.arrangeItemsNow();
             this.hidden = false;
             Elements.urlbarState.setAttribute("autocomplete", "true");
           ]]>
         </body>
       </method>
       <method name="closePopup">
         <body>
           <![CDATA[
             if (!this.popupOpen)
               return;
             this.input.controller.stopSearch();
             this.hidden = true;
             Elements.urlbarState.removeAttribute("autocomplete");
           ]]>
         </body>
       </method>
       <!-- Updating grid content -->
       <field name="_grid">null</field>
       <field name="_results" readonly="true">document.getAnonymousElementByAttribute(this, 'anonid', 'results');</field>
       <field name="_resultsContainer" readonly="true">document.getAnonymousElementByAttribute(this, 'anonid', 'results-container');</field>
       <field name="_searchesHeader" readonly="true">document.getAnonymousElementByAttribute(this, 'anonid', 'searches-header');</field>
       <field name="_searches" readonly="true">document.getAnonymousElementByAttribute(this, 'anonid', 'searches');</field>
       <property name="_otherGrid" readonly="true">
         <getter>
           <![CDATA[
             if (this._grid == null)
               return null;
             return (this._grid == this._results) ? this._searches : this._results;
           ]]>
         </getter>
       </property>
       <method name="_isGridBound">
         <parameter name="aGrid"/>
         <body>
           <![CDATA[
             return aGrid && aGrid.isBound;
           ]]>
         </body>
       </method>
       <method name="invalidate">
         <body>
           <![CDATA[
             if (!this.popupOpen)
               return;
             this.updateSearchEngineHeader();
             this.updateResults();
           ]]>
         </body>
       </method>
       <!-- Updating grid content: results -->
       <method name="updateResults">
         <body>
           <![CDATA[
             if (!this._isGridBound(this._results))
               return;
             if (!this.input)
               return;
             let haveNoResults = (this.matchCount == 0);
             if (haveNoResults) {
               this._results.clearAll();
               this.setAttribute("nomatch", true);
               this._resultsContainer.removeAttribute("flex");
               return;
             }
             this.removeAttribute("nomatch");
             this._resultsContainer.setAttribute("flex", 1);
             let controller = this.input.controller;
             let lastMatch = this.matchCount - 1;
             let iterCount = Math.max(this._results.itemCount, this.matchCount);
             // Swap out existing items for new search hit results
             for (let i = 0; i < iterCount; i++) {
               let item = this._results._slotAt(i);
               if (i > lastMatch) {
                 item.removeAttribute("value");
                 item.removeAttribute("autocomplete");
                 continue;
               }
               let value = controller.getValueAt(i);
               let label = controller.getCommentAt(i) || value;
               let iconURI = controller.getImageAt(i);
               item.setAttribute("autocomplete", true);
               item.setAttribute("label", label);
               item.setAttribute("value", value);
               item.setAttribute("iconURI", iconURI);
               let xpFaviconURI = Services.io.newURI(iconURI.replace("moz-anno:favicon:",""), null, null);
               Task.spawn(function() {
                 let colorInfo = yield ColorUtils.getForegroundAndBackgroundIconColors(xpFaviconURI);
                 if ( !(colorInfo && colorInfo.background && colorInfo.foreground)
                      || (item.getAttribute("iconURI") != iconURI) ) {
                   return;
                 }
                 let { background, foreground } = colorInfo;
                 item.style.color = foreground; //color text
                 item.setAttribute("customColor", background);
                 // when bound, use the setter to propogate the color change through the tile
                 if ('color' in item) {
                   item.color = background;
                 }
               }).then(null, err => Components.utils.reportError(err));
             }
             this._results.arrangeItems();
           ]]>
         </body>
       </method>
       <!-- Updating grid content: search engines -->
       <field name="_engines">[]</field>
       <method name="_initSearchEngines">
         <body>
           <![CDATA[
             Services.search.init(this.updateSearchEngineGrid.bind(this));
           ]]>
         </body>
       </method>
       <method name="updateSearchEngineGrid">
         <body>
           <![CDATA[
             if (!this._isGridBound(this._searches))
               return;
             this._engines = Services.search.getVisibleEngines();
             while (this._searches.itemCount > 0)
               this._searches.removeItemAt(0, true);
             this._engines.forEach(function (anEngine) {
               let item = this._searches.appendItem("", anEngine.name, true);
               item.setAttribute("autocomplete", "true");
               item.setAttribute("search", "true");
               let largeImage = anEngine.getIconURLBySize(74,74);
               if (largeImage) {
                 item.setAttribute("iconsize", "large");
                 item.setAttribute("iconURI", largeImage);
               } else if (anEngine.iconURI && anEngine.iconURI.spec) {
                 item.setAttribute("iconURI", anEngine.iconURI.spec);
                 item.setAttribute("customColor", "#fff");
               }
             }.bind(this));
             this._searches.arrangeItems();
           ]]>
         </body>
       </method>
       <method name="updateSearchEngineHeader">
         <body>
           <![CDATA[
             if (!this._isGridBound(this._searches))
               return;
             let searchString = this.input.controller.searchString;
             let label = Strings.browser.formatStringFromName(
                               "opensearch.search.header", [searchString], 1);
             this._searchesHeader.value = label;
           ]]>
         </body>
       </method>
       <!-- Selecting results -->
       <method name="selectBy">
         <parameter name="aReverse"/>
         <parameter name="aPage"/>
         <body>
           <![CDATA[
             if (!this._isGridBound(this._results) ||
                 !this._isGridBound(this._searches))
               return;
             // Move between grids if we're at the edge of one.
             if ((this._grid.isSelectionAtEnd && !aReverse) ||
                 (this._grid.isSelectionAtStart && aReverse)) {
               let index = !aReverse ? 0 : this._otherGrid.itemCount - 1;
               this._otherGrid.selectedIndex = index;
             } else {
               this._grid.offsetSelection(aReverse ? -1 : 1);
             }
           ]]>
         </body>
       </method>
       <method name="clearSelection">
         <body>
           <![CDATA[
             if (this._isGridBound(this._results))
               this._results.clearSelection();
             if (this._isGridBound(this._searches))
               this._searches.clearSelection();
           ]]>
         </body>
       </method>
       <!-- Submitting selected results -->
       <method name="submitSelected">
         <body>
           <![CDATA[
             if (this._isGridBound(this._results) &&
                 this._results.selectedIndex >= 0) {
               let url = this.input.controller.getValueAt(this._results.selectedIndex);
               this.input.value = url;
               return this.input.submitURL();
             }
             if (this._isGridBound(this._searches) &&
                 this._searches.selectedIndex >= 0) {
               let engine = this._engines[this._searches.selectedIndex];
               return this.input.submitSearch(engine.name);
             }
             return false;
           ]]>
         </body>
       </method>
       <method name="handleItemClick">
         <parameter name="aItem"/>
         <parameter name="aEvent"/>
         <body>
           <![CDATA[
             this.submitSelected();
           ]]>
         </body>
       </method>
       <!-- nsIObserver -->
       <method name="observe">
         <parameter name="aSubject"/>
         <parameter name="aTopic"/>
         <parameter name="aData"/>
         <body>
           <![CDATA[
             switch (aTopic) {
               case "browser-search-engine-modified":
                 this.updateSearchEngineGrid();
                 break;
             }
           ]]>
         </body>
       </method>
     </implementation>
     <handlers>
       <handler event="contentgenerated">
         <![CDATA[
           let grid = event.originalTarget;
           if (grid == this._searches)
             this._initSearchEngines();
           if (grid == this._results)
             this.updateResults();
         ]]>
       </handler>
       <handler event="select">
         <![CDATA[
           let grid = event.originalTarget;
           // If a selection was made on a different grid,
           // remove selection from the current grid.
           if (grid != this._grid) {
             this._grid.clearSelection();
             this._grid = this._otherGrid;
           }
         ]]>
       </handler>
     </handlers>
   </binding>
 </bindings>

The Tor Browser / annotate

browser/metro/base/content/bindings/urlbar.xml@6474c204b198 (annotated)

browser/metro/base/content/bindings/urlbar.xml