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358 lines
14 KiB
Plaintext
358 lines
14 KiB
Plaintext
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsISupports.idl"
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interface nsIDOMDocument;
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interface nsIDOMEventListener;
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interface nsIChannel;
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interface nsIVariant;
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/**
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* Mozilla's XMLHttpRequest is modelled after Microsoft's IXMLHttpRequest
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* object. The goal has been to make Mozilla's version match Microsoft's
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* version as closely as possible, but there are bound to be some differences.
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*
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* In general, Microsoft's documentation for IXMLHttpRequest can be used.
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* Mozilla's interface definitions provide some additional documentation. The
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* web page to look at is http://www.mozilla.org/xmlextras/
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*
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* Mozilla's XMLHttpRequest object can be created in JavaScript like this:
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* new XMLHttpRequest()
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* compare to Internet Explorer:
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* new ActiveXObject("Msxml2.XMLHTTP")
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*
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* From JavaScript, the methods and properties visible in the XMLHttpRequest
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* object are a combination of nsIXMLHttpRequest and nsIJSXMLHttpRequest;
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* there is no need to differentiate between those interfaces.
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*
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* From native code, the way to set up onload and onerror handlers is a bit
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* different. Here is a comment from Johnny Stenback <jst@netscape.com>:
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*
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* The mozilla implementation of nsIXMLHttpRequest implements the interface
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* nsIDOMEventTarget and that's how you're supported to add event listeners.
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* Try something like this:
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*
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* nsCOMPtr<nsIDOMEventTarget> target(do_QueryInterface(myxmlhttpreq));
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*
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* target->AddEventListener(NS_LITERAL_STRING("load"), mylistener,
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* PR_FALSE)
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*
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* where mylistener is your event listener object that implements the
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* interface nsIDOMEventListener.
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*
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* The 'onload' and 'onerror' attributes moved to nsIJSXMLHttRequest,
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* but if you're coding in C++ you should avoid using those.
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*/
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[scriptable, uuid(7b3b3c62-9d53-4abc-bc89-c33ce78f439f)]
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interface nsIXMLHttpRequest : nsISupports
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{
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/**
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* The request uses a channel in order to perform the
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* request. This attribute represents the channel used
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* for the request. NULL if the channel has not yet been
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* created.
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*
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* In a multipart request case, this is the initial channel, not the
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* different parts in the multipart request.
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*
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* Mozilla only. Requires elevated privileges to access.
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*/
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readonly attribute nsIChannel channel;
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/**
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* The response to the request is parsed as if it were a
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* text/xml stream. This attributes represents the response as
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* a DOM Document object. NULL if the request is unsuccessful or
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* has not yet been sent.
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*/
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readonly attribute nsIDOMDocument responseXML;
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/**
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* The response to the request as text.
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* NULL if the request is unsuccessful or
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* has not yet been sent.
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*/
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readonly attribute AString responseText;
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/**
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* The status of the response to the request for HTTP requests.
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*/
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readonly attribute unsigned long status;
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/**
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* The string representing the status of the response for
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* HTTP requests.
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*/
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readonly attribute AUTF8String statusText;
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/**
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* If the request has been sent already, this method will
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* abort the request.
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*/
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void abort();
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/**
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* Returns all of the response headers as a string for HTTP
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* requests.
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*
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* Note that this will return all the headers from the *current*
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* part of a multipart request, not from the original channel.
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*
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* @returns A string containing all of the response headers.
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* NULL if the response has not yet been received.
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*/
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string getAllResponseHeaders();
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/**
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* Returns the text of the header with the specified name for
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* HTTP requests.
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*
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* @param header The name of the header to retrieve
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* @returns A string containing the text of the header specified.
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* NULL if the response has not yet been received or the
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* header does not exist in the response.
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*/
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ACString getResponseHeader(in AUTF8String header);
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/**
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* Native (non-script) method to initialize a request. Note that
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* the request is not sent until the <code>send</code> method
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* is invoked.
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*
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* Will abort currently active loads.
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*
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* After the initial response, all event listeners will be cleared.
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* Call open() before setting new event listeners.
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*
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* @param method The HTTP method, for example "POST" or "GET". Ignored
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* if the URL is not a HTTP(S) URL.
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* @param url The URL to which to send the request.
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* @param async Whether the request is synchronous or asynchronous
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* i.e. whether send returns only after the response
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* is received or if it returns immediately after
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* sending the request. In the latter case, notification
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* of completion is sent through the event listeners.
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* This argument must be true if the multipart
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* attribute has been set to true, or an exception will
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* be thrown.
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* @param user A username for authentication if necessary.
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* @param password A password for authentication if necessary.
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*/
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[noscript] void openRequest(in AUTF8String method,
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in AUTF8String url,
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in boolean async,
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in AString user,
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in AString password);
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/**
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* Meant to be a script-only method for initializing a request.
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* The parameters are similar to the ones detailed in the
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* description of <code>openRequest</code>, but the last
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* 3 are optional.
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*
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* Will abort currently active loads.
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*
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* After the initial response, all event listeners will be cleared.
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* Call open() before setting new event listeners.
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*
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* @param method The HTTP method - either "POST" or "GET". Ignored
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* if the URL is not a HTTP URL.
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* @param url The URL to which to send the request.
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* @param async (optional) Whether the request is synchronous or
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* asynchronous i.e. whether send returns only after
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* the response is received or if it returns immediately after
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* sending the request. In the latter case, notification
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* of completion is sent through the event listeners.
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* The default value is true.
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* This argument must be true if the multipart
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* attribute has been set to true, or an exception will
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* be thrown.
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* @param user (optional) A username for authentication if necessary.
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* The default value is the empty string
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* @param password (optional) A password for authentication if necessary.
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* The default value is the empty string
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*/
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void open(in AUTF8String method, in AUTF8String url);
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/**
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* Sends the request. If the request is asynchronous, returns
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* immediately after sending the request. If it is synchronous
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* returns only after the response has been received.
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*
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* After the initial response, all event listeners will be cleared.
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* Call open() before setting new event listeners.
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*
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* @param body Either an instance of nsIDOMDocument, nsIInputStream
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* or a string (nsISupportsString in the native calling
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* case). This is used to populate the body of the
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* HTTP request if the HTTP request method is "POST".
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* If the parameter is a nsIDOMDocument, it is serialized.
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* If the parameter is a nsIInputStream, then it must be
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* compatible with nsIUploadChannel.setUploadStream, and a
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* Content-Length header will be added to the HTTP request
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* with a value given by nsIInputStream.available. Any
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* headers included at the top of the stream will be
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* treated as part of the message body. The MIME type of
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* the stream should be specified by setting the Content-
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* Type header via the setRequestHeader method before
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* calling send.
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*/
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void send(in nsIVariant body);
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/**
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* Sets a HTTP request header for HTTP requests. You must call open
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* before setting the request headers.
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*
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* @param header The name of the header to set in the request.
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* @param value The body of the header.
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*/
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void setRequestHeader(in AUTF8String header, in AUTF8String value);
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/**
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* The state of the request.
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*
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* Possible values:
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* 0 UNINITIALIZED open() has not been called yet.
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* 1 LOADING send() has not been called yet.
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* 2 LOADED send() has been called, headers and status are available.
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* 3 INTERACTIVE Downloading, responseText holds the partial data.
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* 4 COMPLETED Finished with all operations.
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*/
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readonly attribute long readyState;
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/**
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* Override the mime type returned by the server (if any). This may
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* be used, for example, to force a stream to be treated and parsed
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* as text/xml, even if the server does not report it as such. This
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* must be done before the <code>send</code> method is invoked.
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*
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* @param mimetype The type used to override that returned by the server
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* (if any).
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*/
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void overrideMimeType(in AUTF8String mimetype);
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/**
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* Set to true if the response is expected to be a stream of
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* possibly multiple (XML) documents. If set to true, the content
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* type of the initial response must be multipart/x-mixed-replace or
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* an error will be triggerd. All requests must be asynchronous.
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*
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* This enables server push. For each XML document that's written to
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* this request, a new XML DOM document is created and the onload
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* handler is called inbetween documents. Note that when this is
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* set, the onload handler and other event handlers are not reset
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* after the first XML document is loaded, and the onload handler
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* will be called as each part of the response is received.
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*/
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attribute boolean multipart;
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};
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[scriptable, function, uuid(6459B7CE-6B57-4934-A0AF-0133BA6F9085)]
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interface nsIOnReadyStateChangeHandler : nsISupports {
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/**
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* Helper to implement the onreadystatechange callback member.
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* You should not need to use this.
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*/
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void handleEvent();
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};
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[scriptable, uuid(9deabc90-28d5-41d3-a660-474f2254f4ba)]
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interface nsIJSXMLHttpRequest : nsISupports {
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/**
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* Meant to be a script-only mechanism for setting a load event listener.
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* The attribute is expected to be JavaScript function object. When
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* the load event occurs, the function is invoked.
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* This attribute should not be used from native code!!
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*
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* After the initial response, all event listeners will be cleared.
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* Call open() before setting new event listeners.
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*
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* Mozilla only.
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*/
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attribute nsIDOMEventListener onload;
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/**
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* Meant to be a script-only mechanism for setting an error event listener.
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* The attribute is expected to be JavaScript function object. When
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* the error event occurs, the function is invoked.
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* This attribute should not be used from native code!!
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*
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* After the initial response, all event listeners will be cleared.
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* Call open() before setting new event listeners.
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*
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* Mozilla only.
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*/
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attribute nsIDOMEventListener onerror;
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/**
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* Meant to be a script-only mechanism for setting a progress event listener.
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* The attribute is expected to be JavaScript function object. When
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* the error event occurs, the function is invoked.
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* This attribute should not be used from native code!!
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* This event listener may be called multiple times during the open request.
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*
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* After the initial response, all event listeners will be cleared.
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* Call open() before setting new event listeners.
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*
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* Mozilla only.
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*/
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attribute nsIDOMEventListener onprogress;
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/**
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* Meant to be a script-only mechanism for setting a callback function.
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* The attribute is expected to be JavaScript function object. When the
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* readyState changes, the callback function will be called.
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* This attribute should not be used from native code!!
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*
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* After the initial response, all event listeners will be cleared.
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* Call open() before setting new event listeners.
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*/
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attribute nsIOnReadyStateChangeHandler onreadystatechange;
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};
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%{ C++
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#define NS_XMLHTTPREQUEST_CID \
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{ /* d164e770-4157-11d4-9a42-000064657374 */ \
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0xd164e770, 0x4157, 0x11d4, \
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{0x9a, 0x42, 0x00, 0x00, 0x64, 0x65, 0x73, 0x74} }
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#define NS_XMLHTTPREQUEST_CONTRACTID \
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"@mozilla.org/xmlextras/xmlhttprequest;1"
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%}
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