mirror of
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371 lines
15 KiB
Plaintext
371 lines
15 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
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* Google Inc.
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* Portions created by the Initial Developer are Copyright (C) 2005
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Brett Wilson <brettw@gmail.com>
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* Marco Bonardo <mak77@bonardo.net>
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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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[scriptable, uuid(2cf188f4-3c96-4bca-b668-36b25aaf7c1d)]
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interface nsIFaviconService : 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.
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*
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* Will create an entry linking the favicon URI to the page, regardless
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* of whether we have data for that icon. You can populate it later with
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* SetFaviconData. However, remember that any favicons not associated with a
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* visited web page, a bookmark, or a "place:" URI, will be removed during
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* expiration runs.
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*
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* This will send out history pageChanged notification if the new favicon has
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* any data and it's different from the old associated favicon. This means
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* that you should try to set data before calling this method if you have it,
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* otherwise it won't fire any notifications.
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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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*/
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void setFaviconUrlForPage(in nsIURI aPageURI,
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in nsIURI aFaviconURI);
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/**
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* Same as SetFaviconUrlForPage except that this also attempts to fetch and
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* save the icon data by loading the favicon URI through an async network
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* request.
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*
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* If the icon data already exists, we won't normally try to re-load the
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* icon. If the icon is in the failed favicon cache we won't do anything.
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* Use forceReload to force a reload of the data. This will also eventually
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* remove the favicon from the failed cache, if the reload succeeds.
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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 page
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* favicon URI (see FAVICON_ERRORPAGE_URL below).
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* Icons that fail to load will automatically be added to the failed favicon
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* cache.
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*
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* This function will not save favicons for non-bookmarked URIs when
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* history is disabled. The rest of the functions
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* here will always store favicons even when history is disabled.
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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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* Unset is normal behavior, we will only try to reload the favicon
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* if we don't have it or if it has expired from the cache. If set,
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* it will always try to reload the favicon.
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* @param aCallback
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* Once we're done setting and/or loading the favicon, we invoke this
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* callback.
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*
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* @deprecated Use the identical function
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* mozIAsyncFavicons::setAndFetchFaviconForPage.
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*/
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[deprecated]
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void setAndLoadFaviconForPage(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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* Stores the data for a given favicon URI.
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*
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* You can set the data even if you haven't called SetFaviconUrlForPage
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* yet. It will be stored but will not be associated with any page.
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* However, any favicons not associated with a visited web page, bookmark,
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* or "place:" URI will be expired when history expiration runs. This might
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* happen at any time, so you should not let the message loop run before
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* you associate the icon or it may get deleted.
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*
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* It is best to set the favicon data, and then associate it with a page using
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* setFaviconUrlForPage, otherwise it won't notify about the change.
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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 setFaviconData(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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in PRTime aExpiration);
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/**
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* Same as setFaviconData 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 setFaviconData
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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 setFaviconDataFromDataURL(in nsIURI aFaviconURI,
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in AString aDataURL,
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in PRTime aExpiration);
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/**
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* Retrieves the given favicon data. Throws if we don't have data.
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*
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* If there is no data but we have an entry for this favicon, aDataLen will
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* be 0 and aData will be NULL.
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*
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* @param aFaviconURI
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* URI of the favicon whose data is being read
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* @param aData
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* Output parameter where the binary favicon data will be placed.
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* This will be null if we have this URI but have no data associated
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* with it.
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* @param aDataLen
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* Output parameter where the size of the binary data will be placed.
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* @param aMimeType
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* Output parameter where the MIME type will be placed.
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* @throws NS_ERROR_NOT_AVAILABLE
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* Thrown when we have never heard of this favicon URI.
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*/
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void getFaviconData(in nsIURI aFaviconURI,
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out AUTF8String aMimeType,
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[optional] out unsigned long aDataLen,
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[array,retval,size_is(aDataLen)] out octet aData);
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/**
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* Same as getFaviconData, but returns data as a string containing a data url.
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*
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* @see getFaviconData
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*
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* @param aFaviconURI
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* URI of the favicon whose data is being read
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* @return A data URL containing the data of the favicon. This will be
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* null if we have this URL but have no data associated with it.
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* @throws NS_ERROR_NOT_AVAILABLE
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* Thrown when we have never heard of this favicon URL.
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*/
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AString getFaviconDataAsDataURL(in nsIURI aFaviconURI);
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/**
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* Retrieves the URI 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 is desired
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* @return The URI of the favicon associated with that page. Returning a
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* URI here does NOT mean that we have data for this favicon, only
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* that we know what the favicon should be.
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* @throws NS_ERROR_NOT_AVAILABLE
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* When the page is not found or it has no favicon.
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*/
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nsIURI getFaviconForPage(in nsIURI aPageURI);
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/**
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* Same as getFaviconLinkForIcon but this adds an extra level of indirection,
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* looking up the favicon based on the page URI and using the default if not
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* found.
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*
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* @see getFaviconLinkForIcon
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*
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* @param aPageURI
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* URI of the page whose favicon is desired
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* @return A URI that will give you the icon image. This is NOT the URI of
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* the icon as set on the page, but a URI that will give you the
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* data out of the favicon service. For a normal page with a
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* favicon we've stored, this will be an annotation URI which will
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* then cause the corresponding favicon data to be loaded async from
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* this service. For pages where we don't have a favicon, this will
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* be a chrome URI of the default icon. For chrome URIs, the
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* output will be the same as the input.
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*/
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nsIURI getFaviconImageForPage(in nsIURI aPageURI);
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/**
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* For a given icon URI, this will return a URI that will result in the image.
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* In most cases, this is an annotation URI. For chrome URIs, this will do
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* nothing but returning the input URI.
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*
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* No validity checking is done. If you pass an icon URI that we've never
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* seen, you'll get back a URI that references an invalid icon. The moz-anno
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* protocol handler's special case for "favicon" annotations will resolve
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* invalid icons to the default icon, although without caching.
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* For invalid chrome URIs, you'll get a broken image.
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*
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* @param aFaviconURI
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* The URI of an icon in the favicon service.
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* @return A URI that will give you the icon image. This is NOT the URI of
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* the icon as set on the page, but a URI that will give you the
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* data out of the favicon service. For a normal page with a
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* favicon we've stored, this will be an annotation URI which will
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* then cause the corresponding favicon data to be loaded async from
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* this service. For pages where we don't have a favicon, this will
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* be a chrome URI of the default icon. For chrome URIs, the
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* output will be the same as the input.
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*/
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nsIURI getFaviconLinkForIcon(in nsIURI aFaviconURI);
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/**
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* Expire all known favicons from the database.
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*
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* @note This is an async method.
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* On successful completion a "places-favicons-expired" notification is
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* dispatched through observer's service.
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*/
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void expireAllFavicons();
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/**
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* Adds a given favicon's URI to the failed favicon cache.
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*
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* The lifespan of the favicon cache is up to the caching system. This cache
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* will also be written when setAndLoadFaviconForPage hits an error while
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* fetching an icon.
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*
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* @param aFaviconURI
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* The URI of an icon in the favicon service.
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*/
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void addFailedFavicon(in nsIURI aFaviconURI);
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/**
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* Removes the given favicon from the failed favicon cache. If the icon is
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* not in the cache, it will silently succeed.
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*
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* @param aFaviconURI
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* The URI of an icon in the favicon service.
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*/
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void removeFailedFavicon(in nsIURI aFaviconURI);
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/**
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* Checks to see if a favicon is in the failed favicon cache.
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* A positive return value means the icon is in the failed cache and you
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* probably shouldn't try to load it. A false return value means that it's
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* worth trying to load it.
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* This allows you to avoid trying to load "foo.com/favicon.ico" for every
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* page on a site that doesn't have a favicon.
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*
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* @param aFaviconURI
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* The URI of an icon in the favicon service.
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*/
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boolean isFailedFavicon(in nsIURI aFaviconURI);
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/**
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* The default favicon URI
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*/
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readonly attribute nsIURI defaultFavicon;
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};
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[scriptable, function, uuid(22ebd780-f4ab-11de-8a39-0800200c9a66)]
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interface nsIFaviconDataCallback : nsISupports
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{
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/**
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* Called when the required favicon's information is available.
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*
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* This callback will be called only if the operation is successful, otherwise
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* you won't get notified.
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*
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* The caller will receive the most information we can gather on the icon,
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* but it's not guaranteed that all of them will be set. For some method
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* we could not know the favicon's data (it could just be too expensive to
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* get it, or the method does not require we actually have any data).
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* It's up to the caller to check aDataLen > 0 before using any data-related
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* information like mime-type or data itself.
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*
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* @param aURI
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* Depending on caller method it could be:
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* - a dataURI: has "data:" scheme, with base64 encoded icon data.
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* - a faviconURI: the URI of the icon in the favicon service.
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* - a faviconLinkURI: has "moz-anno" scheme, used to get data async.
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* @param aDataLen
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* Size of the icon data in bytes. Notice that a value of 0 does not
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* necessarily mean that we don't have an icon.
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* @param aData
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* Icon data, null if aDataLen is 0.
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* @param aMimeType
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* Mime type of the icon, null if aDataLen is 0.
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*/
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void onFaviconDataAvailable(in nsIURI aURI,
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in unsigned long aDataLen,
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[const,array,size_is(aDataLen)] in octet aData,
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in AUTF8String aMimeType);
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};
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%{C++
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/**
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* Notification sent when all favicons are expired.
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*/
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#define NS_PLACES_FAVICONS_EXPIRED_TOPIC_ID "places-favicons-expired"
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#define FAVICON_DEFAULT_URL "chrome://mozapps/skin/places/defaultFavicon.png"
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#define FAVICON_ERRORPAGE_URL "chrome://global/skin/icons/warning-16.png"
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%}
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