gecko-dev/docshell/base/nsIWebNavigation.idl

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/* -*- 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 nsIDOMDocument;
interface nsIInputStream;
interface nsISHistory;
interface nsIURI;
/**
* The nsIWebNavigation interface defines an interface for navigating the web.
* It provides methods and attributes to direct an object to navigate to a new
* location, stop or restart an in process load, or determine where the object
* has previously gone.
*
* @status UNDER_REVIEW
*/
[scriptable, uuid(F5D9E7B0-D930-11d3-B057-00A024FFC08C)]
interface nsIWebNavigation : nsISupports
{
/**
* Indicates if the object can go back. If true this indicates that
* there is back session history available for navigation.
*/
readonly attribute boolean canGoBack;
/**
* Indicates if the object can go forward. If true this indicates that
* there is forward session history available for navigation
*/
readonly attribute boolean canGoForward;
/**
* Tells the object to navigate to the previous session history item. When a
* page is loaded from session history, all content is loaded from the cache
* (if available) and page state (such as form values and scroll position) is
* restored.
*
* @throw NS_ERROR_UNEXPECTED
* Indicates that the call was unexpected at this time, which implies
* that canGoBack is false.
*/
void goBack();
/**
* Tells the object to navigate to the next session history item. When a
* page is loaded from session history, all content is loaded from the cache
* (if available) and page state (such as form values and scroll position) is
* restored.
*
* @throw NS_ERROR_UNEXPECTED
* Indicates that the call was unexpected at this time, which implies
* that canGoForward is false.
*/
void goForward();
/**
* Tells the object to navigate to the session history item at a given index.
*
* @throw NS_ERROR_UNEXPECTED
* Indicates that the call was unexpected at this time, which implies
* that session history entry at the given index does not exist.
*/
void gotoIndex(in long index);
/****************************************************************************
* The following flags may be bitwise combined to form the load flags
* parameter passed to either the loadURI or reload method. Some of these
* flags are only applicable to loadURI.
*/
/**
* This flags defines the range of bits that may be specified.
*/
const unsigned long LOAD_FLAGS_MASK = 0xffff;
/**
* This is the default value for the load flags parameter.
*/
const unsigned long LOAD_FLAGS_NONE = 0x0000;
/**
* This flag specifies that the load should have the semantics of an HTML
* Meta-refresh tag (i.e., that the cache should be bypassed). This flag
* is only applicable to loadURI.
* XXX the meaning of this flag is poorly defined.
* XXX no one uses this, so we should probably deprecate and remove it.
*/
const unsigned long LOAD_FLAGS_IS_REFRESH = 0x0010;
/**
* This flag specifies that the load should have the semantics of a link
* click. This flag is only applicable to loadURI.
* XXX the meaning of this flag is poorly defined.
*/
const unsigned long LOAD_FLAGS_IS_LINK = 0x0020;
/**
* This flag specifies that history should not be updated. This flag is only
* applicable to loadURI.
*/
const unsigned long LOAD_FLAGS_BYPASS_HISTORY = 0x0040;
/**
* This flag specifies that any existing history entry should be replaced.
* This flag is only applicable to loadURI.
*/
const unsigned long LOAD_FLAGS_REPLACE_HISTORY = 0x0080;
/**
* This flag specifies that the local web cache should be bypassed, but an
* intermediate proxy cache could still be used to satisfy the load.
*/
const unsigned long LOAD_FLAGS_BYPASS_CACHE = 0x0100;
/**
* This flag specifies that any intermediate proxy caches should be bypassed
* (i.e., that the content should be loaded from the origin server).
*/
const unsigned long LOAD_FLAGS_BYPASS_PROXY = 0x0200;
/**
* This flag specifies that a reload was triggered as a result of detecting
* an incorrect character encoding while parsing a previously loaded
* document.
*/
const unsigned long LOAD_FLAGS_CHARSET_CHANGE = 0x0400;
/**
* If this flag is set, Stop() will be called before the load starts
* and will stop both content and network activity (the default is to
* only stop network activity). Effectively, this passes the
* STOP_CONTENT flag to Stop(), in addition to the STOP_NETWORK flag.
*/
const unsigned long LOAD_FLAGS_STOP_CONTENT = 0x0800;
/**
* A hint this load was prompted by an external program: take care!
*/
const unsigned long LOAD_FLAGS_FROM_EXTERNAL = 0x1000;
/**
* Loads a given URI. This will give priority to loading the requested URI
* in the object implementing this interface. If it can't be loaded here
* however, the URI dispatcher will go through its normal process of content
* loading.
*
* @param aURI
* The URI string to load. For HTTP and FTP URLs and possibly others,
* characters above U+007F will be converted to UTF-8 and then URL-
* escaped per the rules of RFC 2396.
* @param aLoadFlags
* Flags modifying load behaviour. This parameter is a bitwise
* combination of the load flags defined above. (Undefined bits are
* reserved for future use.) Generally you will pass LOAD_FLAGS_NONE
* for this parameter.
* @param aReferrer
* The referring URI. If this argument is null, then the referring
* URI will be inferred internally.
* @param aPostData
* If the URI corresponds to a HTTP request, then this stream is
* appended directly to the HTTP request headers. It may be prefixed
* with additional HTTP headers. This stream must contain a "\r\n"
* sequence separating any HTTP headers from the HTTP request body.
* This parameter is optional and may be null.
* @param aHeaders
* If the URI corresponds to a HTTP request, then any HTTP headers
* contained in this stream are set on the HTTP request. The HTTP
* header stream is formatted as:
* ( HEADER "\r\n" )*
* This parameter is optional and may be null.
*/
void loadURI(in wstring aURI,
in unsigned long aLoadFlags,
in nsIURI aReferrer,
in nsIInputStream aPostData,
in nsIInputStream aHeaders);
/**
* Tells the Object to reload the current page. There may be cases where the
* user will be asked to confirm the reload (for example, when it is
* determined that the request is non-idempotent).
*
* @param aReloadFlags
* Flags modifying load behaviour. This parameter is a bitwise
* combination of the Load Flags defined above. (Undefined bits are
* reserved for future use.) Generally you will pass LOAD_FLAGS_NONE
* for this parameter.
*
* @throw NS_BINDING_ABORTED
* Indicating that the user canceled the reload.
*/
void reload(in unsigned long aReloadFlags);
/****************************************************************************
* The following flags may be passed as the stop flags parameter to the stop
* method defined on this interface.
*/
/**
* This flag specifies that all network activity should be stopped. This
* includes both active network loads and pending META-refreshes.
*/
const unsigned long STOP_NETWORK = 0x01;
/**
* This flag specifies that all content activity should be stopped. This
* includes animated images, plugins and pending Javascript timeouts.
*/
const unsigned long STOP_CONTENT = 0x02;
/**
* This flag specifies that all activity should be stopped.
*/
const unsigned long STOP_ALL = 0x03;
/**
* Stops a load of a URI.
*
* @param aStopFlags
* This parameter is one of the stop flags defined above.
*/
void stop(in unsigned long aStopFlags);
/**
* Retrieves the current DOM document for the frame, or lazily creates a
* blank document if there is none. This attribute never returns null except
* for unexpected error situations.
*/
readonly attribute nsIDOMDocument document;
/**
* The currently loaded URI or null.
*/
readonly attribute nsIURI currentURI;
/**
* The referring URI for the currently loaded URI or null.
*/
readonly attribute nsIURI referringURI;
/**
* The session history object used by this web navigation instance.
*/
attribute nsISHistory sessionHistory;
};