pjs/suite/common/permissions/imageContextOverlay.xul

<?xml version="1.0"?>

<!-- ***** 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 Mozilla Communicator client code, released
 March 31, 1998.

 The Initial Developer of the Original Code is
 Netscape Communications Corporation.
 Portions created by the Initial Developer are Copyright (C) 1998-1999
 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 ***** -->

<!DOCTYPE overlay SYSTEM "chrome://communicator/locale/permissions/imageContextOverlay.dtd">

<overlay id="cookieContextOverlay"
         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">

  <script type="application/x-javascript" src="chrome://communicator/content/permissions/permissionsOverlay.js"/>

  <script type="application/x-javascript">
  <![CDATA[

    // Code from nsContextMenu.js. Note that we extend the prototype here, rather 
    // than making these methods on a new object, as some methods require access
    // to data maintained by nsContextMenu.  

    var cookieContextMenu = {

      // Determine if "Block Image" is to appear in the menu.
      // Return true if image is not already blocked.
      isBlockingImages : function () {
        /* determine if image is already being blocked */
        const nsIPermissionManager = Components.interfaces.nsIPermissionManager;
        var permissionmanager =
          Components.classes["@mozilla.org/permissionmanager;1"]
            .getService(Components.interfaces.nsIPermissionManager);
        if(!permissionmanager) {
          return true;
        }
        var ioService = Components.classes["@mozilla.org/network/io-service;1"]
                                  .getService(Components.interfaces.nsIIOService);
        var uri = ioService.newURI(gContextMenu.imageURL, null, null);
        return permissionmanager.testPermission(uri, "image") != nsIPermissionManager.DENY_ACTION;
      },

      // Block image from loading in the future.
      blockImage : function () {
        const nsIPermissionManager = Components.interfaces.nsIPermissionManager;
        var permissionmanager =
          Components.classes["@mozilla.org/permissionmanager;1"]
            .getService(Components.interfaces.nsIPermissionManager);
        if (!permissionmanager) {
          return;
        }
        var ioService = Components.classes["@mozilla.org/network/io-service;1"]
                                  .getService(Components.interfaces.nsIIOService);
        uri = ioService.newURI(gContextMenu.imageURL, null, null);
        permissionmanager.add(uri, "image", nsIPermissionManager.DENY_ACTION);
      },

      // Unblock image from loading in the future.
      unblockImage : function () {
        const nsIPermissionManager = Components.interfaces.nsIPermissionManager;
        var permissionmanager =
          Components.classes["@mozilla.org/permissionmanager;1"]
            .getService().QueryInterface(Components.interfaces.nsIPermissionManager);
        if (!permissionmanager) {
          return;
        }
        var ioService = Components.classes["@mozilla.org/network/io-service;1"]
                                  .getService(Components.interfaces.nsIIOService);
        uri = ioService.newURI(gContextMenu.imageURL, null, null);
        permissionmanager.remove(uri.host, "image");
      },

      initImageBlocking : function () {
        try {
        // Block image depends on whether an image was clicked on

        gContextMenu.showItem
          ("context-blockimage",
           gContextMenu.onImage && cookieContextMenu.isBlockingImages());

        gContextMenu.showItem
          ("context-unblockimage",
           gContextMenu.onImage && !cookieContextMenu.isBlockingImages());
        } catch (e) {}
      },

      addContextMenuItemListeners : function (aEvent) {
        var contextPopup = document.getElementById("contentAreaContextSet");
        if (contextPopup)
          contextPopup.addEventListener("popupshowing", cookieContextMenu.initImageBlocking, false);

        var mailContextPopup = document.getElementById("messagePaneContext");
        if (mailContextPopup)
          mailContextPopup.addEventListener("popupshowing", cookieContextMenu.initImageBlocking, false);
      }
    }
    window.addEventListener("load", cookieContextMenu.addContextMenuItemListeners, false);

   ]]>
  </script>         

  <!-- context menu -->
  <popup id="contentAreaContextMenu">
    <menuitem id="context-blockimage"
              label="&blockImageCmd.label;"
              accesskey=""
              oncommand="cookieContextMenu.blockImage();"
              insertafter="context-viewimage"/>
    <menuitem id="context-unblockimage"
              label="&unblockImageCmd.label;"
              accesskey=""
              oncommand="cookieContextMenu.unblockImage();"
              insertafter="context-viewimage"/>
  </popup>

  <!-- Mail Message Pane context menu -->
  <popup id="messagePaneContext">
    <menuitem id="context-blockimage"
              label="&blockImageCmd.label;"
              accesskey=""
              oncommand="cookieContextMenu.blockImage();"
              insertafter="context-viewimage"/>
    <menuitem id="context-unblockimage"
              label="&unblockImageCmd.label;"
              accesskey=""
              oncommand="cookieContextMenu.unblockImage();"
              insertafter="context-viewimage"/>
  </popup>
  
</overlay>