embedding/browser/nsITooltipListener.idl
author Gijs Kruitbosch <gijskruitbosch@gmail.com>
Tue, 12 Apr 2016 21:47:25 +0100
changeset 331263 86c2f4fb77a5d736d6e383f7599d58e6346492e4
parent 222310 0197daa3451668b39331537168076320b67066ff
permissions -rw-r--r--
Bug 1236991 - part 1: allow forwarding label direction through nsITooltipTextProvider, r=enndeakin MozReview-Commit-ID: 68LvgKvVXmX

/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
 
#include "nsISupports.idl"

/**
 * An optional interface for embedding clients wishing to receive
 * notifications for when a tooltip should be displayed or removed.
 * The embedder implements this interface on the web browser chrome
 * object associated with the window that notifications are required
 * for.
 *
 * @see nsITooltipTextProvider
 */
[scriptable, uuid(44b78386-1dd2-11b2-9ad2-e4eee2ca1916)]
interface nsITooltipListener : nsISupports
{
    /**
     * Called when a tooltip should be displayed.
     *
     * @param aXCoords The tooltip left edge X coordinate.
     * @param aYCoords The tooltip top edge Y coordinate.
     * @param aTipText The text to display in the tooltip, typically obtained
     *        from the TITLE attribute of the node (or containing parent)
     *        over which the pointer has been positioned.
     * @param aTipDir  The direction (ltr or rtl) in which to display the text
     *
     * @note
     * Coordinates are specified in pixels, relative to the top-left
     * corner of the browser area.
     *
     * @return <code>NS_OK</code> if the tooltip was displayed.
     */
    void onShowTooltip(in long aXCoords, in long aYCoords, in wstring aTipText,
                       in wstring aTipDir);
  
    /**
     * Called when the tooltip should be hidden, either because the pointer
     * has moved or the tooltip has timed out.
     */
    void onHideTooltip();
};