docshell/base/nsITooltipTextProvider.idl

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "nsISupports.idl"
   7
   8 webidl Node;
   9
  10 /**
  11  * An interface implemented by a tooltip text provider service. This
  12  * service is called to discover what tooltip text is associated
  13  * with the node that the pointer is positioned over.
  14  *
  15  * Embedders may implement and register their own tooltip text provider
  16  * service if they wish to provide different tooltip text.
  17  *
  18  * The default service returns the text stored in the TITLE
  19  * attribute of the node or a containing parent.
  20  *
  21  * @note
  22  * The tooltip text provider service is registered with the contract
  23  * defined in NS_TOOLTIPTEXTPROVIDER_CONTRACTID.
  24  *
  25  * @see nsITooltipListener
  26  * @see nsIComponentManager
  27  * @see Node
  28  */
  29 [scriptable, uuid(b128a1e6-44f3-4331-8fbe-5af360ff21ee)]
  30 interface nsITooltipTextProvider : nsISupports
  31 {
  32     /**
  33      * Called to obtain the tooltip text for a node.
  34      *
  35      * @arg aNode      The node to obtain the text from.
  36      * @arg aText      The tooltip text.
  37      * @arg aDirection The text direction (ltr or rtl) to use
  38      *
  39      * @return <CODE>PR_TRUE</CODE> if tooltip text is associated
  40      *         with the node and was returned in the aText argument;
  41      *         <CODE>PR_FALSE</CODE> otherwise.
  42      */
  43     boolean getNodeText(in Node aNode, out wstring aText, out wstring aDirection);
  44 };