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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the QtDeclarative module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include "private/qdeclarativecleanup_p.h" |
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43 |
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44 #include "private/qdeclarativeengine_p.h" |
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45 |
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46 QT_BEGIN_NAMESPACE |
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47 |
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48 /*! |
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49 \internal |
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50 \class QDeclarativeCleanup |
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51 \brief The QDeclarativeCleanup provides a callback when a QDeclarativeEngine is deleted. |
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52 |
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53 Any object that needs cleanup to occur before the QDeclarativeEngine's QScriptEngine is |
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54 destroyed should inherit from QDeclarativeCleanup. The clear() virtual method will be |
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55 called by QDeclarativeEngine just before it deletes the QScriptEngine. |
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56 */ |
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57 |
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58 /*! |
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59 \internal |
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60 |
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61 Create a QDeclarativeCleanup for \a engine |
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62 */ |
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63 QDeclarativeCleanup::QDeclarativeCleanup(QDeclarativeEngine *engine) |
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64 : prev(0), next(0) |
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65 { |
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66 if (!engine) |
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67 return; |
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68 |
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69 QDeclarativeEnginePrivate *p = QDeclarativeEnginePrivate::get(engine); |
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70 |
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71 if (p->cleanup) next = p->cleanup; |
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72 p->cleanup = this; |
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73 prev = &p->cleanup; |
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74 if (next) next->prev = &next; |
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75 } |
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76 |
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77 /*! |
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78 \internal |
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79 */ |
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80 QDeclarativeCleanup::~QDeclarativeCleanup() |
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81 { |
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82 if (prev) *prev = next; |
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83 if (next) next->prev = prev; |
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84 prev = 0; |
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85 next = 0; |
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86 } |
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87 QT_END_NAMESPACE |