DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Mercurial (5b81998bb7ab)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344
/* -*- 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 nsIFaviconDataCallback;

[scriptable, uuid(2cf188f4-3c96-4bca-b668-36b25aaf7c1d)]
interface nsIFaviconService : nsISupports
{
  /**
   * Declares that a given page uses a favicon with the given URI.
   *
   * Will create an entry linking the favicon URI to the page, regardless
   * of whether we have data for that icon.  You can populate it later with
   * SetFaviconData.  However, remember that favicons must only be associated
   * with a visited web page, a bookmark, or a "place:" URI.  Trying to
   * associate the icon to any other page will throw.
   *
   * This will send out history pageChanged notification if the new favicon has
   * any data and it's different from the old associated favicon.  This means
   * that you should try to set data before calling this method if you have it,
   * otherwise it won't fire any notifications.
   *
   * @param aPageURI
   *        URI of the page whose favicon is being set.
   * @param aFaviconURI
   *        URI of the favicon to associate with the page.
   * @throws NS_ERROR_NOT_AVAILABLE if aPageURI doesn't exist in the database.
   */
  void setFaviconUrlForPage(in nsIURI aPageURI,
                            in nsIURI aFaviconURI);

  /**
   * Same as SetFaviconUrlForPage except that this also 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 normally try to re-load the
   * icon.  If the icon is in the failed favicon cache we won't do anything.
   * Use forceReload to force a reload of the data.  This will also eventually
   * remove the favicon from the failed cache, if the reload succeeds.
   *
   * This function will only save favicons for "good" URIs, as defined by what
   * gets added to history or is a bookmark.  For "bad" URIs, this function
   * 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.
   *
   * This function will not save favicons for non-bookmarked URIs when
   * history is disabled.  The rest of the functions
   * here will always store favicons even when history is disabled.
   *
   * @param aPageURI
   *        URI of the page whose favicon is being set.
   * @param aFaviconURI
   *        URI of the favicon to associate with the page.
   * @param aForceReload
   *        Unset is normal behavior, we will only try to reload the favicon
   *        if we don't have it or if it has expired from the cache.  If set,
   *        it will always try to reload the favicon.
   * @param aCallback
   *        Once we're done setting and/or loading the favicon, we invoke this
   *        callback.
   *
   * @deprecated Use the identical function
   *             mozIAsyncFavicons::setAndFetchFaviconForPage.
   */
  [deprecated]
  void setAndLoadFaviconForPage(in nsIURI aPageURI,
                                in nsIURI aFaviconURI,
                                in boolean aForceReload,
                                [optional] in nsIFaviconDataCallback aCallback);

  /**
   * Stores the data for a given favicon URI.
   *
   * You can set the data even if you haven't called SetFaviconUrlForPage
   * yet.  It will be stored but will not be associated with any page.
   * However, any favicons not associated with a visited web page, bookmark,
   * or "place:" URI will be expired when history expiration runs.  This might
   * happen at any time, so you should not let the message loop run before
   * you associate the icon or it may get deleted.
   *
   * It is best to set the favicon data, and then associate it with a page using
   * setFaviconUrlForPage, otherwise it won't notify about the change.
   *
   * 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 aDataLength
   *        Length of binary data
   * @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 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.
   *
   * @deprecated Use mozIAsyncFavicons::replaceFaviconData
   */
  void setFaviconData(in nsIURI aFaviconURI,
                      [const,array,size_is(aDataLen)] in octet aData,
                      in unsigned long aDataLen,
                      in AUTF8String aMimeType,
                      in PRTime aExpiration);

  /**
   * Same as setFaviconData but the data is provided by a string
   * containing a data URL.
   *
   * @see setFaviconData
   *
   * @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 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.
   *
   * @deprecated Use mozIAsyncFavicons::replaceFaviconDataFromDataURL
   */
  void setFaviconDataFromDataURL(in nsIURI aFaviconURI,
                                 in AString aDataURL,
                                 in PRTime aExpiration);

  /**
   * Retrieves the given favicon data.  Throws if we don't have data.
   *
   * If there is no data but we have an entry for this favicon, aDataLen will
   * be 0 and aData will be NULL.
   *
   * @param aFaviconURI
   *        URI of the favicon whose data is being read
   * @param aData
   *        Output parameter where the binary favicon data will be placed.
   *        This will be null if we have this URI but have no data associated
   *        with it.
   * @param aDataLen
   *        Output parameter where the size of the binary data will be placed.
   * @param aMimeType
   *        Output parameter where the MIME type will be placed.
   * @throws NS_ERROR_NOT_AVAILABLE
   *         Thrown when we have never heard of this favicon URI.
   */
  void getFaviconData(in nsIURI aFaviconURI,
                      out AUTF8String aMimeType,
                      [optional] out unsigned long aDataLen,
                      [array,retval,size_is(aDataLen)] out octet aData);

  /**
   * Same as getFaviconData, but returns data as a string containing a data url.
   *
   * @see getFaviconData
   *
   * @param aFaviconURI
   *        URI of the favicon whose data is being read
   * @return A data URL containing the data of the favicon. This will be
   *         null if we have this URL but have no data associated with it.
   * @throws NS_ERROR_NOT_AVAILABLE
   *         Thrown when we have never heard of this favicon URL.
   */
  AString getFaviconDataAsDataURL(in nsIURI aFaviconURI);

  /**
   * Retrieves the URI of the favicon for the given page.
   *
   * @param aPageURI
   *        URI of the page whose favicon is desired
   * @return The URI of the favicon associated with that page. Returning a
   *         URI here does NOT mean that we have data for this favicon, only
   *         that we know what the favicon should be.
   * @throws NS_ERROR_NOT_AVAILABLE
   *         When the page is not found or it has no favicon.
   */
  nsIURI getFaviconForPage(in nsIURI aPageURI);

  /**
   * Same as getFaviconLinkForIcon but this adds an extra level of indirection,
   * looking up the favicon based on the page URI and using the default if not
   * found.
   *
   * @see getFaviconLinkForIcon
   *
   * @param aPageURI
   *        URI of the page whose favicon is desired
   * @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 getFaviconImageForPage(in nsIURI aPageURI);

  /**
   * 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();

  /**
   * Adds a given favicon's URI to the failed favicon cache.
   *
   * The lifespan of the favicon cache is up to the caching system.  This cache
   * will also be written when setAndLoadFaviconForPage hits an error while
   * fetching an icon.
   *
   * @param aFaviconURI
   *        The URI of an icon in the favicon service.
   */
  void addFailedFavicon(in nsIURI aFaviconURI);

  /**
   * Removes the given favicon from the failed favicon cache.  If the icon is
   * not in the cache, it will silently succeed.
   *
   * @param aFaviconURI
   *        The URI of an icon in the favicon service.
   */
  void removeFailedFavicon(in nsIURI aFaviconURI);

  /**
   * Checks to see if a favicon is in the failed favicon cache.
   * A positive return value means the icon is in the failed cache and you
   * probably shouldn't try to load it.  A false return value means that it's
   * worth trying to load it.
   * This allows you to avoid trying to load "foo.com/favicon.ico" for every
   * page on a site that doesn't have a favicon.
   *
   * @param aFaviconURI
   *        The URI of an icon in the favicon service.
   */
  boolean isFailedFavicon(in nsIURI aFaviconURI);

  /**
   * The default favicon URI
   */
  readonly attribute nsIURI defaultFavicon;
};

[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.
   *
   * @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);
};

%{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.png"
#define FAVICON_ERRORPAGE_URL "chrome://global/skin/icons/warning-16.png"

%}