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.

Untracked file

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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357
/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is the Mozilla browser.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications, Inc.
 * Portions created by the Initial Developer are Copyright (C) 1999
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Travis Bogard <travis@netscape.com>
 *   Darin Fisher <darin@meer.net>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "nsISupports.idl"

interface nsIWebProgress;
interface nsIRequest;
interface nsIURI;

/**
 * The nsIWebProgressListener interface is implemented by clients wishing to
 * listen in on the progress associated with the loading of asynchronous
 * requests in the context of a nsIWebProgress instance as well as any child
 * nsIWebProgress instances.  nsIWebProgress.idl describes the parent-child
 * relationship of nsIWebProgress instances.
 *
 * @status FROZEN
 */
[scriptable, uuid(570F39D1-EFD0-11d3-B093-00A024FFC08C)]
interface nsIWebProgressListener : nsISupports
{
  /**
   * State Transition Flags
   *
   * These flags indicate the various states that requests may transition
   * through as they are being loaded.  These flags are mutually exclusive.
   *
   * For any given request, onStateChange is called once with the STATE_START
   * flag, zero or more times with the STATE_TRANSFERRING flag or once with the
   * STATE_REDIRECTING flag, and then finally once with the STATE_STOP flag.
   * NOTE: For document requests, a second STATE_STOP is generated (see the
   * description of STATE_IS_WINDOW for more details).
   *
   * STATE_START
   *   This flag indicates the start of a request.  This flag is set when a
   *   request is initiated.  The request is complete when onStateChange is
   *   called for the same request with the STATE_STOP flag set.
   *
   * STATE_REDIRECTING
   *   This flag indicates that a request is being redirected.  The request
   *   passed to onStateChange is the request that is being redirected.  When a
   *   redirect occurs, a new request is generated automatically to process the
   *   new request.  Expect a corresponding STATE_START event for the new
   *   request, and a STATE_STOP for the redirected request.
   *
   * STATE_TRANSFERRING
   *   This flag indicates that data for a request is being transferred to an
   *   end consumer.  This flag indicates that the request has been targeted,
   *   and that the user may start seeing content corresponding to the request.
   *
   * STATE_NEGOTIATING
   *   This flag is not used.
   *
   * STATE_STOP
   *   This flag indicates the completion of a request.  The aStatus parameter
   *   to onStateChange indicates the final status of the request.
   */
  const unsigned long STATE_START          = 0x00000001;
  const unsigned long STATE_REDIRECTING    = 0x00000002;
  const unsigned long STATE_TRANSFERRING   = 0x00000004;
  const unsigned long STATE_NEGOTIATING    = 0x00000008;
  const unsigned long STATE_STOP           = 0x00000010;


  /**
   * State Type Flags
   *
   * These flags further describe the entity for which the state transition is
   * occuring.  These flags are NOT mutually exclusive (i.e., an onStateChange
   * event may indicate some combination of these flags).
   *
   * STATE_IS_REQUEST
   *   This flag indicates that the state transition is for a request, which
   *   includes but is not limited to document requests.  (See below for a
   *   description of document requests.)  Other types of requests, such as
   *   requests for inline content (e.g., images and stylesheets) are
   *   considered normal requests.
   *
   * STATE_IS_DOCUMENT
   *   This flag indicates that the state transition is for a document request.
   *   This flag is set in addition to STATE_IS_REQUEST.  A document request
   *   supports the nsIChannel interface and its loadFlags attribute includes
   *   the nsIChannel::LOAD_DOCUMENT_URI flag.
   * 
   *   A document request does not complete until all requests associated with
   *   the loading of its corresponding document have completed.  This includes
   *   other document requests (e.g., corresponding to HTML <iframe> elements).
   *   The document corresponding to a document request is available via the
   *   DOMWindow attribute of onStateChange's aWebProgress parameter.
   *
   * STATE_IS_NETWORK
   *   This flag indicates that the state transition corresponds to the start
   *   or stop of activity in the indicated nsIWebProgress instance.  This flag
   *   is accompanied by either STATE_START or STATE_STOP, and it may be
   *   combined with other State Type Flags.
   *
   *   Unlike STATE_IS_WINDOW, this flag is only set when activity within the
   *   nsIWebProgress instance being observed starts or stops.  If activity
   *   only occurs in a child nsIWebProgress instance, then this flag will be
   *   set to indicate the start and stop of that activity.
   *
   *   For example, in the case of navigation within a single frame of a HTML
   *   frameset, a nsIWebProgressListener instance attached to the
   *   nsIWebProgress of the frameset window will receive onStateChange calls
   *   with the STATE_IS_NETWORK flag set to indicate the start and stop of
   *   said navigation.  In other words, an observer of an outer window can
   *   determine when activity, that may be constrained to a child window or
   *   set of child windows, starts and stops.
   *
   * STATE_IS_WINDOW
   *   This flag indicates that the state transition corresponds to the start
   *   or stop of activity in the indicated nsIWebProgress instance.  This flag
   *   is accompanied by either STATE_START or STATE_STOP, and it may be
   *   combined with other State Type Flags.
   *
   *   This flag is similar to STATE_IS_DOCUMENT.  However, when a document
   *   request completes, two onStateChange calls with STATE_STOP are
   *   generated.  The document request is passed as aRequest to both calls.
   *   The first has STATE_IS_REQUEST and STATE_IS_DOCUMENT set, and the second
   *   has the STATE_IS_WINDOW flag set (and possibly the STATE_IS_NETWORK flag
   *   set as well -- see above for a description of when the STATE_IS_NETWORK
   *   flag may be set).  This second STATE_STOP event may be useful as a way
   *   to partition the work that occurs when a document request completes.
   */
  const unsigned long STATE_IS_REQUEST     = 0x00010000;
  const unsigned long STATE_IS_DOCUMENT    = 0x00020000;
  const unsigned long STATE_IS_NETWORK     = 0x00040000;
  const unsigned long STATE_IS_WINDOW      = 0x00080000;


  /**
   * State Modifier Flags
   *
   * These flags further describe the transition which is occuring.  These
   * flags are NOT mutually exclusive (i.e., an onStateChange event may
   * indicate some combination of these flags).
   *
   * STATE_RESTORING
   *   This flag indicates that the state transition corresponds to the start
   *   or stop of activity for restoring a previously-rendered presentation.
   *   As such, there is no actual network activity associated with this
   *   request, and any modifications made to the document or presentation
   *   when it was originally loaded will still be present.
   */
  const unsigned long STATE_RESTORING      = 0x01000000;

  /**
   * State Security Flags
   *
   * These flags describe the security state reported by a call to the
   * onSecurityChange method.  These flags are mutually exclusive.
   *
   * STATE_IS_INSECURE
   *   This flag indicates that the data corresponding to the request
   *   was received over an insecure channel.
   *
   * STATE_IS_BROKEN
   *   This flag indicates an unknown security state.  This may mean that the
   *   request is being loaded as part of a page in which some content was
   *   received over an insecure channel.
   *
   * STATE_IS_SECURE
   *   This flag indicates that the data corresponding to the request was
   *   received over a secure channel.  The degree of security is expressed by
   *   STATE_SECURE_HIGH, STATE_SECURE_MED, or STATE_SECURE_LOW.
   */
  const unsigned long STATE_IS_INSECURE     = 0x00000004;
  const unsigned long STATE_IS_BROKEN       = 0x00000001;
  const unsigned long STATE_IS_SECURE       = 0x00000002;

  /**
   * Security Strength Flags
   *
   * These flags describe the security strength and accompany STATE_IS_SECURE
   * in a call to the onSecurityChange method.  These flags are mutually
   * exclusive.
   *
   * These flags are not meant to provide a precise description of data
   * transfer security.  These are instead intended as a rough indicator that
   * may be used to, for example, color code a security indicator or otherwise
   * provide basic data transfer security feedback to the user.
   *
   * STATE_SECURE_HIGH
   *   This flag indicates a high degree of security.
   *
   * STATE_SECURE_MED
   *   This flag indicates a medium degree of security.
   *
   * STATE_SECURE_LOW
   *   This flag indicates a low degree of security.
   */
  const unsigned long STATE_SECURE_HIGH     = 0x00040000;
  const unsigned long STATE_SECURE_MED      = 0x00010000;
  const unsigned long STATE_SECURE_LOW      = 0x00020000;


  /**
   * Notification indicating the state has changed for one of the requests
   * associated with aWebProgress.
   *
   * @param aWebProgress
   *        The nsIWebProgress instance that fired the notification
   * @param aRequest
   *        The nsIRequest that has changed state.
   * @param aStateFlags
   *        Flags indicating the new state.  This value is a combination of one
   *        of the State Transition Flags and one or more of the State Type
   *        Flags defined above.  Any undefined bits are reserved for future
   *        use.
   * @param aStatus
   *        Error status code associated with the state change.  This parameter
   *        should be ignored unless aStateFlags includes the STATE_STOP bit.
   *        The status code indicates success or failure of the request
   *        associated with the state change.  NOTE: aStatus may be a success
   *        code even for server generated errors, such as the HTTP 404 error.
   *        In such cases, the request itself should be queried for extended
   *        error information (e.g., for HTTP requests see nsIHttpChannel).
   */
  void onStateChange(in nsIWebProgress aWebProgress,
                     in nsIRequest aRequest,
                     in unsigned long aStateFlags,
                     in nsresult aStatus);

  /**
   * Notification that the progress has changed for one of the requests
   * associated with aWebProgress.  Progress totals are reset to zero when all
   * requests in aWebProgress complete (corresponding to onStateChange being
   * called with aStateFlags including the STATE_STOP and STATE_IS_WINDOW
   * flags).
   *
   * @param aWebProgress
   *        The nsIWebProgress instance that fired the notification.
   * @param aRequest
   *        The nsIRequest that has new progress.
   * @param aCurSelfProgress
   *        The current progress for aRequest.
   * @param aMaxSelfProgress
   *        The maximum progress for aRequest.
   * @param aCurTotalProgress
   *        The current progress for all requests associated with aWebProgress.
   * @param aMaxTotalProgress
   *        The total progress for all requests associated with aWebProgress.
   *
   * NOTE: If any progress value is unknown, or if its value would exceed the
   * maximum value of type long, then its value is replaced with -1.
   *
   * NOTE: If the object also implements nsIWebProgressListener2 and the caller
   * knows about that interface, this function will not be called. Instead,
   * nsIWebProgressListener2::onProgressChange64 will be called.
   */
  void onProgressChange(in nsIWebProgress aWebProgress,
                        in nsIRequest aRequest,
                        in long aCurSelfProgress,
                        in long aMaxSelfProgress,
                        in long aCurTotalProgress,
                        in long aMaxTotalProgress);

  /**
   * Called when the location of the window being watched changes.  This is not
   * when a load is requested, but rather once it is verified that the load is
   * going to occur in the given window.  For instance, a load that starts in a
   * window might send progress and status messages for the new site, but it
   * will not send the onLocationChange until we are sure that we are loading
   * this new page here.
   *
   * @param aWebProgress
   *        The nsIWebProgress instance that fired the notification.
   * @param aRequest
   *        The associated nsIRequest.  This may be null in some cases.
   * @param aLocation
   *        The URI of the location that is being loaded.
   */
  void onLocationChange(in nsIWebProgress aWebProgress,
                        in nsIRequest aRequest,
                        in nsIURI aLocation);

  /**
   * Notification that the status of a request has changed.  The status message
   * is intended to be displayed to the user (e.g., in the status bar of the
   * browser).
   *
   * @param aWebProgress
   *        The nsIWebProgress instance that fired the notification.
   * @param aRequest
   *        The nsIRequest that has new status.
   * @param aStatus
   *        This value is not an error code.  Instead, it is a numeric value
   *        that indicates the current status of the request.  This interface
   *        does not define the set of possible status codes.  NOTE: Some
   *        status values are defined by nsITransport and nsISocketTransport.
   * @param aMessage
   *        Localized text corresponding to aStatus.
   */
  void onStatusChange(in nsIWebProgress aWebProgress,
                      in nsIRequest aRequest,
                      in nsresult aStatus,
                      in wstring aMessage);

  /**
   * Notification called for security progress.  This method will be called on
   * security transitions (eg HTTP -> HTTPS, HTTPS -> HTTP, FOO -> HTTPS) and
   * after document load completion.  It might also be called if an error
   * occurs during network loading.
   *
   * @param aWebProgress
   *        The nsIWebProgress instance that fired the notification.
   * @param aRequest
   *        The nsIRequest that has new security state.
   * @param aState
   *        A value composed of the Security State Flags and the Security
   *        Strength Flags listed above.  Any undefined bits are reserved for
   *        future use.
   *
   * NOTE: These notifications will only occur if a security package is
   * installed.
   */
  void onSecurityChange(in nsIWebProgress aWebProgress,
                        in nsIRequest aRequest,
                        in unsigned long aState);
};