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diff --git a/src/plugins/help/localhelpmanager.cpp b/src/plugins/help/localhelpmanager.cpp
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+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** Commercial Usage
+**
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** GNU Lesser General Public License Usage
+**
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+**
+**************************************************************************/
+
+#include "localhelpmanager.h"
+#include "bookmarkmanager.h"
+
+#include <coreplugin/coreconstants.h>
+#include <coreplugin/helpmanager.h>
+
+#include <QtCore/QMutexLocker>
+
+#include <QtHelp/QHelpEngine>
+
+using namespace Help::Internal;
+
+QMutex LocalHelpManager::m_guiMutex;
+QHelpEngine* LocalHelpManager::m_guiEngine = 0;
+
+QMutex LocalHelpManager::m_bkmarkMutex;
+BookmarkManager* LocalHelpManager::m_bookmarkManager = 0;
+
+LocalHelpManager::LocalHelpManager(QObject *parent)
+ : QObject(parent)
+ , m_guiNeedsSetup(true)
+ , m_needsCollectionFile(true)
+{
+}
+
+LocalHelpManager::~LocalHelpManager()
+{
+ if (m_bookmarkManager) {
+ m_bookmarkManager->saveBookmarks();
+ delete m_bookmarkManager;
+ m_bookmarkManager = 0;
+ }
+
+ delete m_guiEngine;
+ m_guiEngine = 0;
+}
+
+void LocalHelpManager::setupGuiHelpEngine()
+{
+ if (m_needsCollectionFile) {
+ m_needsCollectionFile = false;
+ helpEngine().setCollectionFile(Core::HelpManager::collectionFilePath());
+ }
+
+ if (m_guiNeedsSetup) {
+ m_guiNeedsSetup = false;
+ helpEngine().setupData();
+ }
+}
+
+void LocalHelpManager::setEngineNeedsUpdate()
+{
+ m_guiNeedsSetup = true;
+}
+
+QHelpEngine &LocalHelpManager::helpEngine()
+{
+ if (!m_guiEngine) {
+ QMutexLocker _(&m_guiMutex);
+ if (!m_guiEngine) {
+ m_guiEngine = new QHelpEngine("");
+ m_guiEngine->setAutoSaveFilter(false);
+ }
+ }
+ return *m_guiEngine;
+}
+
+BookmarkManager& LocalHelpManager::bookmarkManager()
+{
+ if (!m_bookmarkManager) {
+ QMutexLocker _(&m_bkmarkMutex);
+ if (!m_bookmarkManager) {
+ m_bookmarkManager = new BookmarkManager;
+ m_bookmarkManager->setupBookmarkModels();
+ const QString &url = QString::fromLatin1("qthelp://com.nokia.qtcreator."
+ "%1%2%3/doc/index.html").arg(IDE_VERSION_MAJOR).arg(IDE_VERSION_MINOR)
+ .arg(IDE_VERSION_RELEASE);
+ helpEngine().setCustomValue(QLatin1String("DefaultHomePage"), url);
+ }
+ }
+ return *m_bookmarkManager;
+}