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Diffstat (limited to 'toolkit/components/places/nsIFaviconService.idl')
| -rw-r--r-- | toolkit/components/places/nsIFaviconService.idl | 339 |
1 files changed, 339 insertions, 0 deletions
diff --git a/toolkit/components/places/nsIFaviconService.idl b/toolkit/components/places/nsIFaviconService.idl new file mode 100644 index 0000000000..b7f9046757 --- /dev/null +++ b/toolkit/components/places/nsIFaviconService.idl @@ -0,0 +1,339 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* 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" + +interface nsIURI; +interface nsIPrincipal; +interface mozIPlacesPendingOperation; +interface nsIFaviconDataCallback; + +[scriptable, uuid(e81e0b0c-b9f1-4c2e-8f3c-b809933cf73c)] +interface nsIFaviconService : nsISupports +{ + // The favicon is being loaded from a private browsing window + const unsigned long FAVICON_LOAD_PRIVATE = 1; + // The favicon is being loaded from a non-private browsing window + const unsigned long FAVICON_LOAD_NON_PRIVATE = 2; + + /** + * The limit in bytes of the size of favicons in memory and passed via the + * favicon protocol. + */ + const unsigned long MAX_FAVICON_BUFFER_SIZE = 65536; + + /** + * For a given icon URI, this will return a URI that will result in the image. + * In most cases, this is an annotation URI. For chrome URIs, this will do + * nothing but returning the input URI. + * + * No validity checking is done. If you pass an icon URI that we've never + * seen, you'll get back a URI that references an invalid icon. The moz-anno + * protocol handler's special case for "favicon" annotations will resolve + * invalid icons to the default icon, although without caching. + * For invalid chrome URIs, you'll get a broken image. + * + * @param aFaviconURI + * The URI of an icon in the favicon service. + * @return A URI that will give you the icon image. This is NOT the URI of + * the icon as set on the page, but a URI that will give you the + * data out of the favicon service. For a normal page with a + * favicon we've stored, this will be an annotation URI which will + * then cause the corresponding favicon data to be loaded async from + * this service. For pages where we don't have a favicon, this will + * be a chrome URI of the default icon. For chrome URIs, the + * output will be the same as the input. + */ + nsIURI getFaviconLinkForIcon(in nsIURI aFaviconURI); + + /** + * Expire all known favicons from the database. + * + * @note This is an async method. + * On successful completion a "places-favicons-expired" notification is + * dispatched through observer's service. + */ + void expireAllFavicons(); + + /** + * Sets the default size returned by preferredSizeFromURI when the uri doesn't + * specify a size ref. If this is not invoked first, or 0 is passed to it, + * preferredSizeFromURI() will return UINT16_MAX, that matches the biggest + * icon available. + */ + void setDefaultIconURIPreferredSize(in unsigned short aDefaultSize); + + /** + * Tries to extract the preferred size from an icon uri ref fragment. + * + * @param aURI + * The URI to parse. + * @return The preferred size, or a default size set through + * setDefaultIconURIPreferredSize, or UINT16_MAX if neither are set. + */ + unsigned short preferredSizeFromURI(in nsIURI aURI); + + /** + * The default favicon URI + */ + readonly attribute nsIURI defaultFavicon; + + /** + * The default favicon mimeType + */ + readonly attribute AUTF8String defaultFaviconMimeType; + + /** + * 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 pages that are already stored in + * the database, like visited pages or bookmarks. For any other URIs, it + * 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 aFaviconLoadType + * Set to FAVICON_LOAD_PRIVATE if the favicon is loaded from a private + * browsing window. Set to FAVICON_LOAD_NON_PRIVATE otherwise. + * @param [optional] aCallback + * Once we're done setting and/or fetching the favicon, we invoke this + * callback. + * @param [optional] aLoadingPrincipal + * Principal of the page whose favicon is being set. If this argument + * is omitted, the loadingPrincipal defaults to the nullPrincipal. + * @param [optional] aRequestContextID + * used to inform Necko of how to link the + * favicon request with other requests in the same tab. + * + * @see nsIFaviconDataCallback in nsIFaviconService.idl. + */ + mozIPlacesPendingOperation setAndFetchFaviconForPage( + in nsIURI aPageURI, + in nsIURI aFaviconURI, + in boolean aForceReload, + in unsigned long aFaviconLoadType, + [optional] in nsIFaviconDataCallback aCallback, + [optional] in nsIPrincipal aLoadingPrincipal, + [optional] in unsigned long long aRequestContextID); + + /** + * Sets the data for a given favicon URI either by replacing existing data in + * the database or taking the place of otherwise fetched icon data when + * calling setAndFetchFaviconForPage later. + * + * Favicon data for favicon URIs that are not associated with a page URI via + * setAndFetchFaviconForPage will be stored in memory, but may be expired at + * any time, so you should make an effort to associate favicon URIs with page + * URIs as soon as possible. + * + * It's better to not use this function for chrome: icon URIs since you can + * reference the chrome image yourself. getFaviconLinkForIcon/Page will ignore + * any associated data if the favicon URI is "chrome:" and just return the + * same chrome URI. + * + * This function does NOT send out notifications that the data has changed. + * Pages using this favicons that are visible in history or bookmarks views + * will keep the old icon until they have been refreshed by other means. + * + * This function tries to optimize the favicon size, if it is bigger + * than a defined limit we will try to convert it to a 16x16 png image. + * If the conversion fails and favicon is still bigger than our max accepted + * size it won't be saved. + * + * @param aFaviconURI + * URI of the favicon whose data is being set. + * @param aData + * Binary contents of the favicon to save + * @param aMimeType + * MIME type of the data to store. This is important so that we know + * what to report when the favicon is used. You should always set this + * param unless you are clearing an icon. + * @param [optional] aExpiration + * Time in microseconds since the epoch when this favicon expires. + * Until this time, we won't try to load it again. + * @throws NS_ERROR_FAILURE + * Thrown if the favicon is overbloated and won't be saved to the db. + */ + void replaceFaviconData(in nsIURI aFaviconURI, + in Array<octet> aData, + in AUTF8String aMimeType, + [optional] in PRTime aExpiration); + + /** + * Same as replaceFaviconData but the data is provided by a string + * containing a data URL. + * + * @see replaceFaviconData + * + * @param aFaviconURI + * URI of the favicon whose data is being set. + * @param aDataURL + * string containing a data URL that represents the contents of + * the favicon to save + * @param [optional] aExpiration + * Time in microseconds since the epoch when this favicon expires. + * Until this time, we won't try to load it again. + * @param [optional] aLoadingPrincipal + * Principal of the page whose favicon is being set. If this argument + * is omitted, the loadingPrincipal defaults to the nullPrincipal. + * @throws NS_ERROR_FAILURE + * Thrown if the favicon is overbloated and won't be saved to the db. + */ + void replaceFaviconDataFromDataURL(in nsIURI aFaviconURI, + in AString aDataURL, + [optional] in PRTime aExpiration, + [optional] in nsIPrincipal aLoadingPrincipal); + + /** + * Retrieves the favicon URI associated to the given page, if any. + * + * @param aPageURI + * URI of the page whose favicon URI we're looking up. + * @param aCallback + * This callback is always invoked to notify the result of the lookup. + * The aURI parameter will be the favicon URI, or null when no favicon + * is associated with the page or an error occurred while fetching it. + * aDataLen will be always 0, aData will be an empty array, and + * aMimeType will be an empty string, regardless of whether a favicon + * was found. + * @param [optional] aPreferredWidth + * The preferred icon width, skip or pass 0 for the default value, + * set through setDefaultIconURIPreferredSize. + * + * @note If a favicon specific to this page cannot be found, this will try to + * fallback to the /favicon.ico for the root domain. + * + * @see nsIFaviconDataCallback in nsIFaviconService.idl. + */ + void getFaviconURLForPage(in nsIURI aPageURI, + in nsIFaviconDataCallback aCallback, + [optional] in unsigned short aPreferredWidth); + + /** + * Retrieves the favicon URI and data associated to the given page, if any. + * If the page icon is not available, it will try to return the root domain + * icon data, when it's known. + * + * @param aPageURI + * URI of the page whose favicon URI and data we're looking up. + * @param aCallback + * This callback is always invoked to notify the result of the lookup. The aURI + * parameter will be the favicon URI, or null when no favicon is + * associated with the page or an error occurred while fetching it. If + * aURI is not null, the other parameters may contain the favicon data. + * However, if no favicon data is currently associated with the favicon + * URI, aDataLen will be 0, aData will be an empty array, and aMimeType + * will be an empty string. + * @param [optional] aPreferredWidth + * The preferred icon width, skip or pass 0 for the default value, + * set through setDefaultIconURIPreferredSize. + * @note If a favicon specific to this page cannot be found, this will try to + * fallback to the /favicon.ico for the root domain. + * + * @see nsIFaviconDataCallback in nsIFaviconService.idl. + */ + void getFaviconDataForPage(in nsIURI aPageURI, + in nsIFaviconDataCallback aCallback, + [optional] in unsigned short aPreferredWidth); + + /** + * Copies cached favicons from a page to another one. + * + * @param aFromPageURI + * URI of the originating page. + * @param aToPageURI + * URI of the destination page. + * @param aFaviconLoadType + * Set to FAVICON_LOAD_PRIVATE if the copy is started from a private + * browsing window. Set to FAVICON_LOAD_NON_PRIVATE otherwise. + * @param [optional] aCallback + * Once we're done copying the favicon, we invoke this callback. + * If a copy has been done, the callback will report one of the + * favicons uri as aFaviconURI, otherwise all the params will be null. + */ + void copyFavicons(in nsIURI aFromPageURI, + in nsIURI aToPageURI, + in unsigned long aFaviconLoadType, + [optional] in nsIFaviconDataCallback aCallback); +}; + +[scriptable, function, uuid(c85e5c82-b70f-4621-9528-beb2aa47fb44)] +interface nsIFaviconDataCallback : nsISupports +{ + /** + * Called when the required favicon's information is available. + * + * It's up to the invoking method to state if the callback is always invoked, + * or called on success only. Check the method documentation to ensure that. + * + * The caller will receive the most information we can gather on the icon, + * but it's not guaranteed that all of them will be set. For some method + * we could not know the favicon's data (it could just be too expensive to + * get it, or the method does not require we actually have any data). + * It's up to the caller to check aDataLen > 0 before using any data-related + * information like mime-type or data itself. + * + * @param aFaviconURI + * Receives the "favicon URI" (not the "favicon link URI") associated + * to the requested page. This can be null if there is no associated + * favicon URI, or the callback is notifying a failure. + * @param aDataLen + * Size of the icon data in bytes. Notice that a value of 0 does not + * necessarily mean that we don't have an icon. + * @param aData + * Icon data, or an empty array if aDataLen is 0. + * @param aMimeType + * Mime type of the icon, or an empty string if aDataLen is 0. + * @param aWidth + * Width of the icon. 0 if the width is unknown or if the icon is + * vectorial. + * + * @note If you want to open a network channel to access the favicon, it's + * recommended that you call the getFaviconLinkForIcon method to convert + * the "favicon URI" into a "favicon link URI". + */ + void onComplete(in nsIURI aFaviconURI, + in unsigned long aDataLen, + [const,array,size_is(aDataLen)] in octet aData, + in AUTF8String aMimeType, + in unsigned short aWidth); +}; + +%{C++ + +/** + * Notification sent when all favicons are expired. + */ +#define NS_PLACES_FAVICONS_EXPIRED_TOPIC_ID "places-favicons-expired" + +#define FAVICON_DEFAULT_URL "chrome://global/skin/icons/defaultFavicon.svg" +#define FAVICON_DEFAULT_MIMETYPE "image/svg+xml" + +#define FAVICON_ERRORPAGE_URL "chrome://global/skin/icons/info.svg" +#define FAVICON_CERTERRORPAGE_URL "chrome://global/skin/icons/warning.svg" + +%} |