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165 lines
7.3 KiB
Plaintext
165 lines
7.3 KiB
Plaintext
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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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(8849feef-0ead-4e9b-b63b-8d862c42a736)]
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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 pages that are already stored in
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* the database, like visited pages or bookmarks. For any other URIs, it
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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 aFaviconLoadType
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* Set to FAVICON_LOAD_PRIVATE if the favicon is loaded from a private
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* browsing window. Set to FAVICON_LOAD_NON_PRIVATE otherwise.
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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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in unsigned long aFaviconLoadType,
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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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* Retrieves the favicon URI associated to the given page, if any.
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*
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* @param aPageURI
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* URI of the page whose favicon URI we're looking up.
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* @param aCallback
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* This callback is always invoked to notify the result of the lookup.
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* The aURI parameter will be the favicon URI, or null when no favicon
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* is associated with the page or an error occurred while fetching it.
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*
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* @note When the callback is invoked, aDataLen will be always 0, aData will
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* be an empty array, and aMimeType will be an empty string, regardless
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* of whether a favicon is associated with the page.
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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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* Retrieves the favicon URI and data associated to the given page, if any.
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*
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* @param aPageURI
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* URI of the page whose favicon URI and data we're looking up.
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* @param aCallback
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* This callback is always invoked to notify the result of the lookup. The aURI
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* parameter will be the favicon URI, or null when no favicon is
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* associated with the page or an error occurred while fetching it. If
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* aURI is not null, the other parameters may contain the favicon data.
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* However, if no favicon data is currently associated with the favicon
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* URI, aDataLen will be 0, aData will be an empty array, and aMimeType
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* will be an empty string.
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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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