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lightning-sunbird  0.9+nobinonly
nsIconProtocolHandler.cpp
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*-
00002  *
00003  * ***** BEGIN LICENSE BLOCK *****
00004  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00005  *
00006  * The contents of this file are subject to the Mozilla Public License Version
00007  * 1.1 (the "License"); you may not use this file except in compliance with
00008  * the License. You may obtain a copy of the License at
00009  * http://www.mozilla.org/MPL/
00010  *
00011  * Software distributed under the License is distributed on an "AS IS" basis,
00012  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00013  * for the specific language governing rights and limitations under the
00014  * License.
00015  *
00016  * The Original Code is mozilla.org code.
00017  *
00018  * The Initial Developer of the Original Code is
00019  * Brian Ryner.
00020  * Portions created by the Initial Developer are Copyright (C) 2000
00021  * the Initial Developer. All Rights Reserved.
00022  *
00023  * Contributor(s):
00024  *   Scott MacGregor <mscott@netscape.com>
00025  *
00026  * Alternatively, the contents of this file may be used under the terms of
00027  * either the GNU General Public License Version 2 or later (the "GPL"), or
00028  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00029  * in which case the provisions of the GPL or the LGPL are applicable instead
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00037  *
00038  * ***** END LICENSE BLOCK ***** */
00039 
00040 #include "nsIconChannel.h"
00041 #include "nsIconURI.h"
00042 #include "nsIconProtocolHandler.h"
00043 #include "nsIURL.h"
00044 #include "nsCRT.h"
00045 #include "nsCOMPtr.h"
00046 #include "nsIComponentManager.h"
00047 #include "nsIServiceManager.h"
00048 #include "nsNetCID.h"
00049 
00051 
00052 nsIconProtocolHandler::nsIconProtocolHandler() 
00053 {
00054 }
00055 
00056 nsIconProtocolHandler::~nsIconProtocolHandler() 
00057 {}
00058 
00059 NS_IMPL_ISUPPORTS2(nsIconProtocolHandler, nsIProtocolHandler, nsISupportsWeakReference)
00060 
00061     
00062 
00063 // nsIProtocolHandler methods:
00064 
00065 NS_IMETHODIMP nsIconProtocolHandler::GetScheme(nsACString &result) 
00066 {
00067   result = "moz-icon";
00068   return NS_OK;
00069 }
00070 
00071 NS_IMETHODIMP nsIconProtocolHandler::GetDefaultPort(PRInt32 *result) 
00072 {
00073   *result = 0;
00074   return NS_OK;
00075 }
00076 
00077 NS_IMETHODIMP nsIconProtocolHandler::AllowPort(PRInt32 port, const char *scheme, PRBool *_retval)
00078 {
00079     // don't override anything.  
00080     *_retval = PR_FALSE;
00081     return NS_OK;
00082 }
00083 
00084 NS_IMETHODIMP nsIconProtocolHandler::GetProtocolFlags(PRUint32 *result) 
00085 {
00086   *result = URI_NORELATIVE | URI_NOAUTH;
00087   return NS_OK;
00088 }
00089 
00090 NS_IMETHODIMP nsIconProtocolHandler::NewURI(const nsACString &aSpec,
00091                                             const char *aOriginCharset, // ignored
00092                                             nsIURI *aBaseURI,
00093                                             nsIURI **result) 
00094 {
00095   
00096   nsCOMPtr<nsIURI> uri;
00097   NS_NEWXPCOM(uri, nsMozIconURI);
00098   if (!uri) return NS_ERROR_OUT_OF_MEMORY;
00099 
00100   nsresult rv = uri->SetSpec(aSpec);
00101   if (NS_FAILED(rv)) return rv;
00102 
00103   NS_ADDREF(*result = uri);
00104   return NS_OK;
00105 }
00106 
00107 NS_IMETHODIMP nsIconProtocolHandler::NewChannel(nsIURI* url, nsIChannel* *result)
00108 {
00109   NS_ENSURE_ARG_POINTER(url);
00110   nsIconChannel* channel = new nsIconChannel;
00111   if (!channel)
00112     return NS_ERROR_OUT_OF_MEMORY;
00113   NS_ADDREF(channel);
00114 
00115   nsresult rv = channel->Init(url);
00116   if (NS_FAILED(rv)) {
00117     NS_RELEASE(channel);
00118     return rv;
00119   }
00120 
00121   *result = channel;
00122   return NS_OK;
00123 }
00124