author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 04 Oct 2010 00:38:12 +0300 | |
changeset 30 | 80e4d18b72f5 |
parent 6 | c3690ec91ef8 |
permissions | -rw-r--r-- |
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/**************************************************************************** |
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** |
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** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies). |
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** All rights reserved. |
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** Contact: Nokia Corporation (developer.feedback@nokia.com) |
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** |
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** This file is part of the HbCore module of the UI Extensions for Mobile. |
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** |
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** GNU Lesser General Public License Usage |
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** This file may be used under the terms of the GNU Lesser General Public |
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** License version 2.1 as published by the Free Software Foundation and |
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** appearing in the file LICENSE.LGPL included in the packaging of this file. |
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** Please review the following information to ensure the GNU Lesser General |
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** Public License version 2.1 requirements will be met: |
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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, Nokia gives you certain additional |
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** rights. These rights are described in the Nokia 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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** If you have questions regarding the use of this file, please contact |
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** Nokia at developer.feedback@nokia.com. |
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** |
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****************************************************************************/ |
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#include "hbinputextradictionaryfactory.h" |
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#include <QDir> |
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#include "hbinputsettingproxy.h" |
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#include "hbinputextrauserdictionary.h" |
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/*! |
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@stable |
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@hbcore |
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\class HbExtraDictionaryFactory |
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\brief A factory class for creating and accessing instances of HbExtraDictionary database. |
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This is a singleton factory class for creating instances of HbExtraDictionary class by id number. |
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It knows where the databases are stored in the system, loads and maintains them in the memory. |
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\sa HbExtraUserDictionary |
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*/ |
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/// @cond |
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class HbExtraDictionaryFactoryPrivate |
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{ |
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public: |
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void shutdown(); |
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public: |
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HbExtraDictionaryFactory *q_ptr; |
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QList<HbExtraUserDictionary *> instances; |
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}; |
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void HbExtraDictionaryFactoryPrivate::shutdown() |
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{ |
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Q_FOREACH(const HbExtraUserDictionary *instance, instances) { |
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delete instance; |
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} |
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instances.clear(); |
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} |
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/// @endcond |
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/*! |
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Returns pointer to the singleton instance. |
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*/ |
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HbExtraDictionaryFactory *HbExtraDictionaryFactory::instance() |
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{ |
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static HbExtraDictionaryFactory singletonInstance; |
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return &singletonInstance; |
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} |
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/*! |
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Constructs the object. |
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*/ |
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HbExtraDictionaryFactory::HbExtraDictionaryFactory() : d_ptr(new HbExtraDictionaryFactoryPrivate) |
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{ |
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Q_D(HbExtraDictionaryFactory); |
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d->q_ptr = this; |
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} |
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/*! |
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Destructs the object. |
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*/ |
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HbExtraDictionaryFactory::~HbExtraDictionaryFactory() |
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{ |
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Q_D(HbExtraDictionaryFactory); |
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delete d; |
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} |
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/*! |
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Returns pointer to dictionary by given id if it exists. Otherwise returns zero. |
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First goes through the dictionary instances in memory, then tries to load |
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from disk. |
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*/ |
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HbExtraUserDictionary *HbExtraDictionaryFactory::existingDictionary(int dictionaryId) |
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{ |
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Q_D(HbExtraDictionaryFactory); |
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106 |
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foreach(HbExtraUserDictionary *dictPtr, d->instances) { |
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if (dictPtr->id() == dictionaryId) { |
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return dictPtr; |
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} |
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} |
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112 |
|
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// At this point make sure that target directory exists. |
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QDir targetDir; |
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targetDir.mkpath(HbInputSettingProxy::extraDictionaryPath()); |
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116 |
|
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HbExtraUserDictionary *newDb = new HbExtraUserDictionary; |
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newDb->setId(dictionaryId); |
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119 |
|
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if (newDb->isAlreadyInMemory()) { |
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newDb->attach(); |
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d->instances.append(newDb); |
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return newDb; |
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} |
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125 |
|
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if (newDb->attach()) { |
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// Not available in memory, try to load from permanent memory. |
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if (newDb->load(newDb->fileName())) { |
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d->instances.append(newDb); |
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return newDb; |
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} |
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} |
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133 |
|
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delete newDb; |
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return 0; |
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} |
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137 |
|
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138 |
/*! |
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139 |
Creates dictionary if it doesn't already exists. If initialContent is given, new dictionary will |
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be filled with it. If a dictionary for given id already exists, it is returned and initialContent |
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is discarded. |
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*/ |
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HbExtraUserDictionary *HbExtraDictionaryFactory::createDictionary(int dictionaryId, const QStringList &initialContent) |
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{ |
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Q_D(HbExtraDictionaryFactory); |
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146 |
|
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HbExtraUserDictionary *newDb = existingDictionary(dictionaryId); |
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if (newDb == 0) { |
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newDb = new HbExtraUserDictionary; |
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newDb->setId(dictionaryId); |
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if (!newDb->attach()) { |
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delete newDb; |
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return 0; |
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} |
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d->instances.append(newDb); |
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} |
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157 |
|
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newDb->addWords(initialContent); |
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return newDb; |
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} |
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161 |
|
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162 |
/*! |
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Shuts down the dictionary and closes shared memory interface. Saves shared data contents to disc if this was |
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last instance in memory. This is done in separate method (instead of destructor) in order to |
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do singleton shutdown safely (the slot is connected to QApplication::aboutToQuit by the framework). |
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*/ |
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void HbExtraDictionaryFactory::shutdown() |
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{ |
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Q_D(HbExtraDictionaryFactory); |
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d->shutdown(); |
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} |
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172 |
|
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// End of file |
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174 |