Back to index

lightning-sunbird  0.9+nobinonly
nsPopupWindowManager.cpp
Go to the documentation of this file.
00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 2002
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either the GNU General Public License Version 2 or later (the "GPL"), or
00026  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
00029  * under the terms of either the GPL or the LGPL, and not to allow others to
00030  * use your version of this file under the terms of the MPL, indicate your
00031  * decision by deleting the provisions above and replace them with the notice
00032  * and other provisions required by the GPL or the LGPL. If you do not delete
00033  * the provisions above, a recipient may use your version of this file under
00034  * the terms of any one of the MPL, the GPL or the LGPL.
00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 #include "nsPopupWindowManager.h"
00039 
00040 #include "nsCRT.h"
00041 #include "nsIServiceManager.h"
00042 #include "nsIPrefService.h"
00043 #include "nsIPrefBranch.h"
00044 #include "nsIPrefBranch2.h"
00045 
00050 static const char kPopupDisablePref[] = "dom.disable_open_during_load";
00051 
00052 //*****************************************************************************
00053 //*** nsPopupWindowManager object management and nsISupports
00054 //*****************************************************************************
00055 
00056 nsPopupWindowManager::nsPopupWindowManager() :
00057   mPolicy(ALLOW_POPUP)
00058 {
00059 }
00060 
00061 nsPopupWindowManager::~nsPopupWindowManager()
00062 {
00063 }
00064 
00065 NS_IMPL_ISUPPORTS3(nsPopupWindowManager, 
00066                    nsIPopupWindowManager,
00067                    nsIObserver,
00068                    nsSupportsWeakReference)
00069 
00070 nsresult
00071 nsPopupWindowManager::Init()
00072 {
00073   nsresult rv;
00074   mPermissionManager = do_GetService(NS_PERMISSIONMANAGER_CONTRACTID);
00075 
00076   nsCOMPtr<nsIPrefBranch2> prefBranch =
00077     do_GetService(NS_PREFSERVICE_CONTRACTID, &rv);
00078   if (NS_SUCCEEDED(rv)) {
00079     PRBool permission;
00080     rv = prefBranch->GetBoolPref(kPopupDisablePref, &permission);
00081     if (NS_FAILED(rv)) {
00082       permission = PR_TRUE;
00083     }
00084     mPolicy = permission ? (PRUint32) DENY_POPUP : (PRUint32) ALLOW_POPUP;
00085 
00086     prefBranch->AddObserver(kPopupDisablePref, this, PR_TRUE);
00087   } 
00088 
00089   return NS_OK;
00090 }
00091 
00092 //*****************************************************************************
00093 //*** nsPopupWindowManager::nsIPopupWindowManager
00094 //*****************************************************************************
00095 
00096 NS_IMETHODIMP
00097 nsPopupWindowManager::TestPermission(nsIURI *aURI, PRUint32 *aPermission)
00098 {
00099   NS_ENSURE_ARG_POINTER(aURI);
00100   NS_ENSURE_ARG_POINTER(aPermission);
00101 
00102   nsresult rv;
00103   PRUint32 permit;
00104 
00105   *aPermission = mPolicy;
00106 
00107   if (mPermissionManager) {
00108     rv = mPermissionManager->TestPermission(aURI, "popup", &permit);
00109 
00110     if (NS_SUCCEEDED(rv)) {
00111       // Share some constants between interfaces?
00112       if (permit == nsIPermissionManager::ALLOW_ACTION) {
00113         *aPermission = ALLOW_POPUP;
00114       } else if (permit == nsIPermissionManager::DENY_ACTION) {
00115         *aPermission = DENY_POPUP;
00116       }
00117     }
00118   }
00119 
00120   return NS_OK;
00121 }
00122 
00123 //*****************************************************************************
00124 //*** nsPopupWindowManager::nsIObserver
00125 //*****************************************************************************
00126 NS_IMETHODIMP
00127 nsPopupWindowManager::Observe(nsISupports *aSubject, 
00128                               const char *aTopic,
00129                               const PRUnichar *aData)
00130 {
00131   nsCOMPtr<nsIPrefBranch> prefBranch = do_QueryInterface(aSubject);
00132   NS_ASSERTION(!nsCRT::strcmp(NS_PREFBRANCH_PREFCHANGE_TOPIC_ID, aTopic),
00133                "unexpected topic - we only deal with pref changes!");
00134 
00135   if (prefBranch) {
00136     // refresh our local copy of the "disable popups" pref
00137     PRBool permission = PR_TRUE;
00138     prefBranch->GetBoolPref(kPopupDisablePref, &permission);
00139 
00140     mPolicy = permission ? (PRUint32) DENY_POPUP : (PRUint32) ALLOW_POPUP;
00141   }
00142 
00143   return NS_OK;
00144 }