uriloader/base/nsIWebProgressListener.idl
author Mike Hommey <mh@glandium.org>
Fri, 25 Feb 2011 12:53:36 +0100
changeset 69247 4820d39b86d725bd2770b4b37ccbb8aca2c4c928
parent 47159 84c1694a4ca9af3a0fd5605a7ec0e9b9e7bd0129
child 80140 f18be484cb5abd0b20abdd846b4448c9b5a52dc5
permissions -rw-r--r--
Bug 620931 part 3 - Allow GRE and XUL application to use omni.jar independently. r=bsmedberg,r=mwu We now store two independent locations for an omni.jar, allowing GRE/XRE and XUL application to each have their own omni.jar. And since xulrunner setups are very independent from the XUL applications, we implement support for both omni.jar and non omni.jar cases in the same runtime, with the side effect of allowing to switch from one to the other manually without rebuilding the binaries. We let the mozilla::Omnijar API handle both cases, so that callers don't need too much work to support them. We also make the preferences service load the same set of preferences in all the various cases (unified vs. separate, omni.jar vs. no omni.jar). The child process launcher for IPC is modified to pass the base directories needed for the mozilla::Omnijar API initialization in the child process. Finally, the startupcache file name canonicalization is modified to separate APP and GRE resources.

/* -*- 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
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 * 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
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 *
 * ***** 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.
 */
[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;

  /**
    * State bits for EV == Extended Validation == High Assurance
    *
    * These flags describe the level of identity verification
    * in a call to the onSecurityChange method. 
    *
    * STATE_IDENTITY_EV_TOPLEVEL
    *   The topmost document uses an EV cert.
    *   NOTE: Available since Gecko 1.9
    */

  const unsigned long STATE_IDENTITY_EV_TOPLEVEL    = 0x00100000;

  /**
   * 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);
};