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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 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 test suite 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 #ifndef PatternistSDK_TreeItem_H |
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43 #define PatternistSDK_TreeItem_H |
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44 |
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45 #include <QObject> |
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46 |
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47 #include "Global.h" |
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48 |
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49 QT_BEGIN_HEADER |
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50 |
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51 QT_BEGIN_NAMESPACE |
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52 |
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53 class QVariant; |
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54 template<typename T> class QList; |
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55 template<typename T> class QPointer; |
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56 |
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57 namespace QPatternistSDK |
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58 { |
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59 /** |
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60 * @short TreeItem is a node in a hierachial structure and is used together |
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61 * with TreeModel. |
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62 * |
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63 * TreeItem is abstract base class. Instances of sub-classes of TreeItem |
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64 * can be used with TreeModel in order to use hierarchial data in Qt's |
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65 * model/view framework. |
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66 * |
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67 * TreeItem is a QObject in order to be able to be used with QPointer. |
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68 * |
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69 * @author Frans Englich <frans.englich@nokia.com> |
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70 * @see TreeModel |
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71 * @ingroup PatternistSDK |
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72 */ |
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73 class Q_PATTERNISTSDK_EXPORT TreeItem : public QObject |
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74 { |
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75 Q_OBJECT |
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76 public: |
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77 typedef QList<QPointer<TreeItem> > List; |
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78 |
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79 virtual ~TreeItem() {} |
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80 virtual void appendChild(TreeItem *item) = 0; |
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81 virtual TreeItem *child(const unsigned int row) const = 0; |
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82 virtual unsigned int childCount() const = 0; |
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83 virtual TreeItem *parent() const = 0; |
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84 |
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85 virtual TreeItem::List children() const = 0; |
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86 virtual int columnCount() const = 0; |
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87 |
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88 /** |
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89 * Determines the position among the children of |
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90 * this TreeItem's parent. This is done by introspecting the result |
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91 * of children(). |
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92 */ |
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93 int row() const; |
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94 |
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95 virtual QVariant data(const Qt::ItemDataRole role, int column) const = 0; |
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96 |
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97 Q_SIGNALS: |
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98 /** |
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99 * Emitted whenever this item changed. This is used for keeping |
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100 * views in synchronization with the item model which houses |
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101 * this item. |
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102 * |
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103 * @param item the item which changed. That is, this TreeItem. |
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104 */ |
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105 void changed(TreeItem *item); |
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106 }; |
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107 } |
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108 |
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109 QT_END_NAMESPACE |
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110 |
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111 QT_END_HEADER |
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112 |
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113 #endif |
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114 // vim: et:ts=4:sw=4:sts=4 |