The Tor Browser / file revision

 /* 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/. */

 "use strict";

 let Cu = Components.utils;

 let Ci = Components.interfaces;

 Cu.import("resource:///modules/tabview/utils.jsm");

 // Bug 671101 - directly using webProgress in this context

 // causes docShells to leak

 this.__defineGetter__("webProgress", function () {

   let ifaceReq = docShell.QueryInterface(Ci.nsIInterfaceRequestor);

   return ifaceReq.getInterface(Ci.nsIWebProgress);

 });

 // ----------

 // WindowEventHandler

 //

 // Handles events dispatched by the content window.

 let WindowEventHandler = {

   // ----------

   // Function: onDOMWillOpenModalDialog

   // Sends a synchronous message when the "onDOMWillOpenModalDialog" event

   // is fired right before a modal dialog will be opened by the current page.

   onDOMWillOpenModalDialog: function WEH_onDOMWillOpenModalDialog(event) {

     // (event.isTrusted == true) when the event is generated by a user action

     // and does not originate from a script.

     if (!event.isTrusted)

       return;

     // we're intentionally sending a synchronous message to handle this event

     // as quick as possible, switch the selected tab and hide the tabview

     // before the modal dialog is shown

     sendSyncMessage("Panorama:DOMWillOpenModalDialog");

   },

   // ----------

   // Function: onMozAfterPaint

   // Sends an asynchronous message when the "onMozAfterPaint" event

   // is fired.

   onMozAfterPaint: function WEH_onMozAfterPaint(event) {

     if (event.clientRects.length > 0) {

       sendAsyncMessage("Panorama:MozAfterPaint");

     }

   }

 };

 // add event listeners

 addEventListener("DOMWillOpenModalDialog", WindowEventHandler.onDOMWillOpenModalDialog, false);

 addEventListener("MozAfterPaint", WindowEventHandler.onMozAfterPaint, false);

 // ----------

 // WindowMessageHandler

 //

 // Handles messages sent by the chrome process.

 let WindowMessageHandler = {

   // ----------

   // Function: isDocumentLoaded

   // Checks if the currently active document is loaded.

   isDocumentLoaded: function WMH_isDocumentLoaded(cx) {

     let isLoaded = (content.document.readyState != "uninitialized" &&

                     !webProgress.isLoadingDocument);

     sendAsyncMessage(cx.name, {isLoaded: isLoaded});

   },

   // ----------

   // Function: isImageDocument

   // Checks if the currently active document is an image document or not.

   isImageDocument: function WMH_isImageDocument(cx) {

     let isImageDocument = (content.document instanceof Ci.nsIImageDocument);

     sendAsyncMessage(cx.name, {isImageDocument: isImageDocument});

   }

 };

 // add message listeners

 addMessageListener("Panorama:isDocumentLoaded", WindowMessageHandler.isDocumentLoaded);

 addMessageListener("Panorama:isImageDocument", WindowMessageHandler.isImageDocument);