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/* -*- 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, 0 for the biggest available.
*
* @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, 0 for the biggest available.
* @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://mozapps/skin/places/defaultFavicon.svg"
#define FAVICON_DEFAULT_MIMETYPE "image/svg+xml"
#define FAVICON_ERRORPAGE_URL "chrome://global/skin/icons/warning.svg"
%}