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qhelpengine.cpp 5.54 KiB
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/****************************************************************************
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**
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** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the Qt Assistant of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL21$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qhelpengine.h"
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#include "qhelpengine_p.h"
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#include "qhelpdbreader_p.h"
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#include "qhelpcontentwidget.h"
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#include "qhelpindexwidget.h"
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#include "qhelpsearchengine.h"
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#include "qhelpcollectionhandler_p.h"
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#include <QtCore/QDir>
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#include <QtCore/QFile>
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#include <QtCore/QLibrary>
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#include <QtCore/QPluginLoader>
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#include <QtWidgets/QApplication>
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#include <QtSql/QSqlQuery>
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QT_BEGIN_NAMESPACE
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QHelpEnginePrivate::QHelpEnginePrivate()
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    : QHelpEngineCorePrivate()
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    , contentModel(0)
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    , contentWidget(0)
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    , indexModel(0)
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    , indexWidget(0)
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    , searchEngine(0)
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{
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}
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QHelpEnginePrivate::~QHelpEnginePrivate()
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{
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}
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void QHelpEnginePrivate::init(const QString &collectionFile,
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                              QHelpEngineCore *helpEngineCore)
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{
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    QHelpEngineCorePrivate::init(collectionFile, helpEngineCore);
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    if (!contentModel)
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contentModel = new QHelpContentModel(this); if (!indexModel) indexModel = new QHelpIndexModel(this); connect(helpEngineCore, SIGNAL(setupFinished()), this, SLOT(applyCurrentFilter())); connect(helpEngineCore, SIGNAL(currentFilterChanged(QString)), this, SLOT(applyCurrentFilter())); } void QHelpEnginePrivate::applyCurrentFilter() { if (!error.isEmpty()) return; contentModel->createContents(currentFilter); indexModel->createIndex(currentFilter); } void QHelpEnginePrivate::setContentsWidgetBusy() { #ifndef QT_NO_CURSOR contentWidget->setCursor(Qt::WaitCursor); #endif } void QHelpEnginePrivate::unsetContentsWidgetBusy() { #ifndef QT_NO_CURSOR contentWidget->unsetCursor(); #endif } void QHelpEnginePrivate::setIndexWidgetBusy() { #ifndef QT_NO_CURSOR indexWidget->setCursor(Qt::WaitCursor); #endif } void QHelpEnginePrivate::unsetIndexWidgetBusy() { #ifndef QT_NO_CURSOR indexWidget->unsetCursor(); #endif } void QHelpEnginePrivate::stopDataCollection() { contentModel->invalidateContents(true); indexModel->invalidateIndex(true); } /*! \class QHelpEngine \since 4.4 \inmodule QtHelp \brief The QHelpEngine class provides access to contents and indices of the help engine. */ /*! Constructs a new help engine with the given \a parent. The help engine uses the information stored in the \a collectionFile for providing help. If the collection file does not already exist, it will be created. */
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QHelpEngine::QHelpEngine(const QString &collectionFile, QObject *parent) : QHelpEngineCore(d = new QHelpEnginePrivate(), parent) { d->init(collectionFile, this); } /*! Destroys the help engine object. */ QHelpEngine::~QHelpEngine() { d->stopDataCollection(); } /*! Returns the content model. */ QHelpContentModel *QHelpEngine::contentModel() const { return d->contentModel; } /*! Returns the index model. */ QHelpIndexModel *QHelpEngine::indexModel() const { return d->indexModel; } /*! Returns the content widget. */ QHelpContentWidget *QHelpEngine::contentWidget() { if (!d->contentWidget) { d->contentWidget = new QHelpContentWidget(); d->contentWidget->setModel(d->contentModel); connect(d->contentModel, SIGNAL(contentsCreationStarted()), d, SLOT(setContentsWidgetBusy())); connect(d->contentModel, SIGNAL(contentsCreated()), d, SLOT(unsetContentsWidgetBusy())); } return d->contentWidget; } /*! Returns the index widget. */ QHelpIndexWidget *QHelpEngine::indexWidget() { if (!d->indexWidget) { d->indexWidget = new QHelpIndexWidget(); d->indexWidget->setModel(d->indexModel); connect(d->indexModel, SIGNAL(indexCreationStarted()), d, SLOT(setIndexWidgetBusy())); connect(d->indexModel, SIGNAL(indexCreated()), d, SLOT(unsetIndexWidgetBusy())); } return d->indexWidget; } /*! Returns the default search engine. */ QHelpSearchEngine* QHelpEngine::searchEngine() { if (!d->searchEngine) d->searchEngine = new QHelpSearchEngine(this, this); return d->searchEngine;
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} QT_END_NAMESPACE