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191 lines
8.0 KiB
Plaintext
191 lines
8.0 KiB
Plaintext
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Places code.
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*
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* The Initial Developer of the Original Code is the Mozilla Foundation.
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*
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* Portions created by the Initial Developer are Copyright (C) 2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Justin Lebar <justin.lebar@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsISupports.idl"
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interface nsIURI;
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interface nsIFaviconDataCallback;
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/**
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* Interface for accessing the favicon service asynchronously.
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*
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* @status EXPERIMENTAL
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*/
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[scriptable, uuid(f3530e8d-0016-4f56-91fe-28958a7ec296)]
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interface mozIAsyncFavicons : nsISupports
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{
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/**
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* Declares that a given page uses a favicon with the given URI and
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* attempts to fetch and save the icon data by loading the favicon URI
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* through an async network request.
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*
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* If the icon data already exists, we won't try to reload the icon unless
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* aForceReload is true. Similarly, if the icon is in the failed favicon
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* cache we won't do anything unless aForceReload is true, in which case
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* we'll try to reload the favicon.
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*
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* This function will only save favicons for "good" URIs, as defined by what
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* gets added to history or is a bookmark. For "bad" URIs, this function
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* will succeed but do nothing. This function will also ignore the error
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* page favicon URI (see FAVICON_ERRORPAGE_URL below).
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*
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* Icons that fail to load will automatically be added to the failed favicon
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* cache, and this function will not save favicons for non-bookmarked URIs
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* when history is disabled.
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*
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* @note This function is identical to
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* nsIFaviconService::setAndLoadFaviconForPage.
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*
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* @param aPageURI
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* URI of the page whose favicon is being set.
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* @param aFaviconURI
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* URI of the favicon to associate with the page.
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* @param aForceReload
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* If aForceReload is false, we try to reload the favicon only if we
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* don't have it or it has expired from the cache. Setting
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* aForceReload to true causes us to reload the favicon even if we
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* have a usable copy.
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* @param aCallback
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* Once we're done setting and/or fetching the favicon, we invoke this
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* callback.
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*
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* @see nsIFaviconDataCallback in nsIFaviconService.idl.
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*/
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void setAndFetchFaviconForPage(in nsIURI aPageURI,
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in nsIURI aFaviconURI,
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in boolean aForceReload,
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[optional] in nsIFaviconDataCallback aCallback);
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/**
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* Sets the data for a given favicon URI either by replacing existing data in
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* the database or taking the place of otherwise fetched icon data when
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* calling setAndFetchFaviconForPage later.
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*
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* Favicon data for favicon URIs that are not associated with a page URI via
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* setAndFetchFaviconForPage will be stored in memory, but may be expired at
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* any time, so you should make an effort to associate favicon URIs with page
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* URIs as soon as possible.
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*
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* It's better to not use this function for chrome: icon URIs since you can
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* reference the chrome image yourself. getFaviconLinkForIcon/Page will ignore
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* any associated data if the favicon URI is "chrome:" and just return the
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* same chrome URI.
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*
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* This function does NOT send out notifications that the data has changed.
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* Pages using this favicons that are visible in history or bookmarks views
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* will keep the old icon until they have been refreshed by other means.
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*
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* This function tries to optimize the favicon size, if it is bigger
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* than a defined limit we will try to convert it to a 16x16 png image.
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* If the conversion fails and favicon is still bigger than our max accepted
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* size it won't be saved.
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*
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* @param aFaviconURI
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* URI of the favicon whose data is being set.
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* @param aData
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* Binary contents of the favicon to save
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* @param aDataLength
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* Length of binary data
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* @param aMimeType
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* MIME type of the data to store. This is important so that we know
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* what to report when the favicon is used. You should always set this
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* param unless you are clearing an icon.
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* @param aExpiration
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* Time in microseconds since the epoch when this favicon expires.
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* Until this time, we won't try to load it again.
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* @throws NS_ERROR_FAILURE
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* Thrown if the favicon is overbloated and won't be saved to the db.
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*/
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void replaceFaviconData(in nsIURI aFaviconURI,
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[const,array,size_is(aDataLen)] in octet aData,
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in unsigned long aDataLen,
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in AUTF8String aMimeType,
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[optional] in PRTime aExpiration);
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/**
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* Same as replaceFaviconData but the data is provided by a string
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* containing a data URL.
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*
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* @see replaceFaviconData
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*
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* @param aFaviconURI
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* URI of the favicon whose data is being set.
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* @param aDataURL
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* string containing a data URL that represents the contents of
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* the favicon to save
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* @param aExpiration
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* Time in microseconds since the epoch when this favicon expires.
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* Until this time, we won't try to load it again.
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* @throws NS_ERROR_FAILURE
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* Thrown if the favicon is overbloated and won't be saved to the db.
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*/
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void replaceFaviconDataFromDataURL(in nsIURI aFaviconURI,
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in AString aDataURL,
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[optional] in PRTime aExpiration);
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/**
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* Retrieve the URL of the favicon for the given page.
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*
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* @param aPageURI
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* URI of the page whose favicon's URL we're looking up
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* @param aCallback
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* Once we've found the favicon's URL, we invoke this callback. Note
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* that the callback's aDataLen will be 0, aData will be null, and
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* aMimeType will be empty -- only aURI will be non-zero/null/empty.
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*
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* @see nsIFaviconDataCallback in nsIFaviconService.idl.
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*/
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void getFaviconURLForPage(in nsIURI aPageURI,
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in nsIFaviconDataCallback aCallback);
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/**
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* Retrieve the URL and data of the favicon for the given page.
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*
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* @param aPageURI
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* URI of the page whose favicon's URL and data we're looking up
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* @param aCallback
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* Once we've found the favicon's URL, we invoke this callback with
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* the favicon data.
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*
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* @see nsIFaviconDataCallback in nsIFaviconService.idl.
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*/
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void getFaviconDataForPage(in nsIURI aPageURI,
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in nsIFaviconDataCallback aCallback);
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};
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