274 lines
7.7 KiB
C++
274 lines
7.7 KiB
C++
/* -*- Mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 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 Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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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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* John C. Griggs <johng@corel.com>
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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 NPL, 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 NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsCOMPtr.h"
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#include "nsAppShell.h"
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#include "nsIServiceManager.h"
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#include "nsIEventQueueService.h"
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#include "nsICmdLineService.h"
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//JCG #define DBG_JCG 1
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#ifdef DBG_JCG
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PRInt32 gAppShellCount = 0;
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PRInt32 gAppShellID = 0;
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#endif
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//-------------------------------------------------------------------------
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//
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// XPCOM CIDs
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//
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//-------------------------------------------------------------------------
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static NS_DEFINE_IID(kEventQueueServiceCID, NS_EVENTQUEUESERVICE_CID);
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static NS_DEFINE_IID(kCmdLineServiceCID, NS_COMMANDLINE_SERVICE_CID);
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PRBool nsAppShell::mRunning = PR_FALSE;
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//-------------------------------------------------------------------------
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//
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// nsAppShell constructor
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//
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//-------------------------------------------------------------------------
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nsAppShell::nsAppShell()
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{
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NS_INIT_REFCNT();
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mDispatchListener = 0;
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mEventQueue = nsnull;
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mApplication = nsnull;
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#ifdef DBG_JCG
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gAppShellCount++;
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mID = gAppShellID++;
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printf("JCG: nsAppShell CTOR (%p) ID: %d, Count: %d\n",this,mID,gAppShellCount);
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#endif
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}
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//-------------------------------------------------------------------------
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//
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// nsAppShell destructor
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//
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//-------------------------------------------------------------------------
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nsAppShell::~nsAppShell()
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{
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if (mApplication) {
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mApplication->Release();
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}
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mApplication = nsnull;
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#ifdef DBG_JCG
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gAppShellCount--;
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printf("JCG: nsAppShell DTOR (%p) ID: %d, Count: %d\n",this,mID,gAppShellCount);
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#endif
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}
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//-------------------------------------------------------------------------
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//
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// nsISupports implementation macro
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//
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//-------------------------------------------------------------------------
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NS_IMPL_ISUPPORTS1(nsAppShell, nsIAppShell)
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//-------------------------------------------------------------------------
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NS_METHOD
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nsAppShell::SetDispatchListener(nsDispatchListener* aDispatchListener)
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{
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mDispatchListener = aDispatchListener;
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return NS_OK;
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}
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//-------------------------------------------------------------------------
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//
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// Create the application shell
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//
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//-------------------------------------------------------------------------
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NS_METHOD nsAppShell::Create(int *bac, char **bav)
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{
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int argc = bac ? *bac : 0;
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char **argv = bav;
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nsresult rv;
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nsCOMPtr<nsICmdLineService> cmdLineArgs = do_GetService(kCmdLineServiceCID);
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if (cmdLineArgs) {
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rv = cmdLineArgs->GetArgc(&argc);
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if (NS_FAILED(rv)) {
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argc = bac ? *bac : 0;
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}
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rv = cmdLineArgs->GetArgv(&argv);
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if (NS_FAILED(rv)) {
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argv = bav;
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}
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}
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mApplication = nsQApplication::Instance(argc,argv);
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if (!mApplication) {
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return NS_ERROR_NOT_INITIALIZED;
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}
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return NS_OK;
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}
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//-------------------------------------------------------------------------
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//
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// Spinup - do any preparation necessary for running a message loop
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//
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//-------------------------------------------------------------------------
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NS_METHOD nsAppShell::Spinup()
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{
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nsresult rv = NS_OK;
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if (mApplication == nsnull)
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return NS_ERROR_NOT_INITIALIZED;
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// Get the event queue service
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nsCOMPtr<nsIEventQueueService> eventQService = do_GetService(kEventQueueServiceCID,&rv);
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if (NS_FAILED(rv)) {
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NS_ASSERTION("Could not obtain event queue service",PR_FALSE);
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return rv;
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}
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//Get the event queue for the thread.
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rv = eventQService->GetThreadEventQueue(NS_CURRENT_THREAD,getter_AddRefs(mEventQueue));
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// If a queue already present use it.
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if (mEventQueue) {
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goto done;
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}
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// Create the event queue for the thread
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rv = eventQService->CreateThreadEventQueue();
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if (NS_FAILED(rv)) {
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NS_ASSERTION("Could not create the thread event queue",PR_FALSE);
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return rv;
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}
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//Get the event queue for the thread
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rv = eventQService->GetThreadEventQueue(NS_CURRENT_THREAD,getter_AddRefs(mEventQueue));
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if (NS_FAILED(rv)) {
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NS_ASSERTION("Could not obtain the thread event queue",PR_FALSE);
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return rv;
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}
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done:
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mApplication->AddEventProcessorCallback(mEventQueue);
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return NS_OK;
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}
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//-------------------------------------------------------------------------
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//
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// Spindown - do any cleanup necessary for finishing a message loop
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//
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//-------------------------------------------------------------------------
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NS_METHOD nsAppShell::Spindown()
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{
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if (mApplication == nsnull)
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return NS_ERROR_NOT_INITIALIZED;
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if (mEventQueue) {
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mApplication->RemoveEventProcessorCallback(mEventQueue);
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mEventQueue = nsnull;
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}
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return NS_OK;
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}
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//-------------------------------------------------------------------------
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//
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// Run
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//
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//-------------------------------------------------------------------------
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NS_METHOD nsAppShell::Run()
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{
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if (mApplication == nsnull)
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return NS_ERROR_NOT_INITIALIZED;
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if (!mEventQueue) {
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Spinup();
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}
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if (!mEventQueue) {
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return NS_ERROR_NOT_INITIALIZED;
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}
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mRunning = PR_TRUE;
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mApplication->exec();
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mRunning = PR_FALSE;
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Spindown();
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return NS_OK;
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}
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//-------------------------------------------------------------------------
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//
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// Exit a message handler loop
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//
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//-------------------------------------------------------------------------
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NS_METHOD nsAppShell::Exit()
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{
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if (mApplication == nsnull)
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return NS_ERROR_NOT_INITIALIZED;
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if (mRunning)
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mApplication->exit(0);
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return NS_OK;
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}
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NS_METHOD nsAppShell::GetNativeEvent(PRBool &aRealEvent, void *& aEvent)
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{
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aRealEvent = PR_FALSE;
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aEvent = 0;
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return NS_OK;
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}
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NS_METHOD nsAppShell::DispatchNativeEvent(PRBool aRealEvent, void *aEvent)
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{
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if (mApplication == nsnull)
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return NS_ERROR_NOT_INITIALIZED;
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if (!mRunning)
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return NS_ERROR_NOT_INITIALIZED;
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mApplication->processEvents(1);
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return NS_OK;
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}
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NS_IMETHODIMP nsAppShell::ListenToEventQueue(nsIEventQueue *aQueue,
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PRBool aListen)
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{
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if (mApplication == nsnull)
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return NS_ERROR_NOT_INITIALIZED;
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if (aListen) {
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mApplication->AddEventProcessorCallback(aQueue);
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}
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else {
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mApplication->RemoveEventProcessorCallback(aQueue);
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}
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return NS_OK;
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}
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