gecko-dev/toolkit/components/places/mozIAsyncFavicons.idl

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** 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 Places code.
*
* The Initial Developer of the Original Code is the Mozilla Foundation.
*
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Justin Lebar <justin.lebar@gmail.com>
*
* 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 ***** */
#include "nsISupports.idl"
interface nsIURI;
interface nsIFaviconDataCallback;
/**
* Interface for accessing the favicon service asynchronously.
*
* @status EXPERIMENTAL
*/
[scriptable, uuid(0cb4e536-e120-41e6-998f-66123d81ec53)]
interface mozIAsyncFavicons : nsISupports
{
/**
* Declares that a given page uses a favicon with the given URI and
* attempts to fetch and save the icon data by loading the favicon URI
* through an async network request.
*
* If the icon data already exists, we won't try to reload the icon unless
* aForceReload is true. Similarly, if the icon is in the failed favicon
* cache we won't do anything unless aForceReload is true, in which case
* we'll try to reload the favicon.
*
* This function will only save favicons for "good" URIs, as defined by what
* gets added to history or is a bookmark. For "bad" URIs, this function
* will succeed but do nothing. This function will also ignore the error
* page favicon URI (see FAVICON_ERRORPAGE_URL below).
*
* Icons that fail to load will automatically be added to the failed favicon
* cache, and this function will not save favicons for non-bookmarked URIs
* when history is disabled.
*
* @note This function is identical to
* nsIFaviconService::setAndLoadFaviconForPage.
*
* @param aPageURI
* URI of the page whose favicon is being set.
* @param aFaviconURI
* URI of the favicon to associate with the page.
* @param aForceReload
* If aForceReload is false, we try to reload the favicon only if we
* don't have it or it has expired from the cache. Setting
* aForceReload to true causes us to reload the favicon even if we
* have a usable copy.
* @param aCallback
* Once we're done setting and/or fetching the favicon, we invoke this
* callback.
*
* @see nsIFaviconDataCallback in nsIFaviconService.idl.
*/
void setAndFetchFaviconForPage(in nsIURI aPageURI,
in nsIURI aFaviconURI,
in boolean aForceReload,
[optional] in nsIFaviconDataCallback aCallback);
/**
* Retrieve the URL of the favicon for the given page.
*
* @param aPageURI
* URI of the page whose favicon's URL we're looking up
* @param aCallback
* Once we've found the favicon's URL, we invoke this callback. Note
* that the callback's aDataLen will be 0, aData will be null, and
* aMimeType will be empty -- only aURI will be non-zero/null/empty.
*
* @see nsIFaviconDataCallback in nsIFaviconService.idl.
*/
void getFaviconURLForPage(in nsIURI aPageURI,
in nsIFaviconDataCallback aCallback);
/**
* Retrieve the URL and data of the favicon for the given page.
*
* @param aPageURI
* URI of the page whose favicon's URL and data we're looking up
* @param aCallback
* Once we've found the favicon's URL, we invoke this callback with
* the favicon data.
*
* @see nsIFaviconDataCallback in nsIFaviconService.idl.
*/
void getFaviconDataForPage(in nsIURI aPageURI,
in nsIFaviconDataCallback aCallback);
};