qtreewidgetitemiterator.h 4.9 KB

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  1. /****************************************************************************
  2. **
  3. ** Copyright (C) 2016 The Qt Company Ltd.
  4. ** Contact: https://www.qt.io/licensing/
  5. **
  6. ** This file is part of the QtWidgets module of the Qt Toolkit.
  7. **
  8. ** $QT_BEGIN_LICENSE:LGPL$
  9. ** Commercial License Usage
  10. ** Licensees holding valid commercial Qt licenses may use this file in
  11. ** accordance with the commercial license agreement provided with the
  12. ** Software or, alternatively, in accordance with the terms contained in
  13. ** a written agreement between you and The Qt Company. For licensing terms
  14. ** and conditions see https://www.qt.io/terms-conditions. For further
  15. ** information use the contact form at https://www.qt.io/contact-us.
  16. **
  17. ** GNU Lesser General Public License Usage
  18. ** Alternatively, this file may be used under the terms of the GNU Lesser
  19. ** General Public License version 3 as published by the Free Software
  20. ** Foundation and appearing in the file LICENSE.LGPL3 included in the
  21. ** packaging of this file. Please review the following information to
  22. ** ensure the GNU Lesser General Public License version 3 requirements
  23. ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
  24. **
  25. ** GNU General Public License Usage
  26. ** Alternatively, this file may be used under the terms of the GNU
  27. ** General Public License version 2.0 or (at your option) the GNU General
  28. ** Public license version 3 or any later version approved by the KDE Free
  29. ** Qt Foundation. The licenses are as published by the Free Software
  30. ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
  31. ** included in the packaging of this file. Please review the following
  32. ** information to ensure the GNU General Public License requirements will
  33. ** be met: https://www.gnu.org/licenses/gpl-2.0.html and
  34. ** https://www.gnu.org/licenses/gpl-3.0.html.
  35. **
  36. ** $QT_END_LICENSE$
  37. **
  38. ****************************************************************************/
  39. #ifndef QTREEWIDGETITEMITERATOR_H
  40. #define QTREEWIDGETITEMITERATOR_H
  41. #include <QtCore/qglobal.h>
  42. #include <QtCore/qscopedpointer.h>
  43. QT_BEGIN_NAMESPACE
  44. #ifndef QT_NO_TREEWIDGET
  45. class QTreeWidget;
  46. class QTreeWidgetItem;
  47. class QTreeModel;
  48. class QTreeWidgetItemIteratorPrivate;
  49. class Q_WIDGETS_EXPORT QTreeWidgetItemIterator
  50. {
  51. friend class QTreeModel;
  52. public:
  53. enum IteratorFlag {
  54. All = 0x00000000,
  55. Hidden = 0x00000001,
  56. NotHidden = 0x00000002,
  57. Selected = 0x00000004,
  58. Unselected = 0x00000008,
  59. Selectable = 0x00000010,
  60. NotSelectable = 0x00000020,
  61. DragEnabled = 0x00000040,
  62. DragDisabled = 0x00000080,
  63. DropEnabled = 0x00000100,
  64. DropDisabled = 0x00000200,
  65. HasChildren = 0x00000400,
  66. NoChildren = 0x00000800,
  67. Checked = 0x00001000,
  68. NotChecked = 0x00002000,
  69. Enabled = 0x00004000,
  70. Disabled = 0x00008000,
  71. Editable = 0x00010000,
  72. NotEditable = 0x00020000,
  73. UserFlag = 0x01000000 // The first flag that can be used by the user.
  74. };
  75. Q_DECLARE_FLAGS(IteratorFlags, IteratorFlag)
  76. QTreeWidgetItemIterator(const QTreeWidgetItemIterator &it);
  77. explicit QTreeWidgetItemIterator(QTreeWidget *widget, IteratorFlags flags = All);
  78. explicit QTreeWidgetItemIterator(QTreeWidgetItem *item, IteratorFlags flags = All);
  79. ~QTreeWidgetItemIterator();
  80. QTreeWidgetItemIterator &operator=(const QTreeWidgetItemIterator &it);
  81. QTreeWidgetItemIterator &operator++();
  82. inline const QTreeWidgetItemIterator operator++(int);
  83. inline QTreeWidgetItemIterator &operator+=(int n);
  84. QTreeWidgetItemIterator &operator--();
  85. inline const QTreeWidgetItemIterator operator--(int);
  86. inline QTreeWidgetItemIterator &operator-=(int n);
  87. inline QTreeWidgetItem *operator*() const;
  88. private:
  89. bool matchesFlags(const QTreeWidgetItem *item) const;
  90. QScopedPointer<QTreeWidgetItemIteratorPrivate> d_ptr;
  91. QTreeWidgetItem *current;
  92. IteratorFlags flags;
  93. Q_DECLARE_PRIVATE(QTreeWidgetItemIterator)
  94. };
  95. inline const QTreeWidgetItemIterator QTreeWidgetItemIterator::operator++(int)
  96. {
  97. QTreeWidgetItemIterator it = *this;
  98. ++(*this);
  99. return it;
  100. }
  101. inline const QTreeWidgetItemIterator QTreeWidgetItemIterator::operator--(int)
  102. {
  103. QTreeWidgetItemIterator it = *this;
  104. --(*this);
  105. return it;
  106. }
  107. inline QTreeWidgetItemIterator &QTreeWidgetItemIterator::operator+=(int n)
  108. {
  109. if (n < 0)
  110. return (*this) -= (-n);
  111. while (current && n--)
  112. ++(*this);
  113. return *this;
  114. }
  115. inline QTreeWidgetItemIterator &QTreeWidgetItemIterator::operator-=(int n)
  116. {
  117. if (n < 0)
  118. return (*this) += (-n);
  119. while (current && n--)
  120. --(*this);
  121. return *this;
  122. }
  123. inline QTreeWidgetItem *QTreeWidgetItemIterator::operator*() const
  124. {
  125. return current;
  126. }
  127. Q_DECLARE_OPERATORS_FOR_FLAGS(QTreeWidgetItemIterator::IteratorFlags)
  128. QT_END_NAMESPACE
  129. #endif // QT_NO_TREEWIDGET
  130. #endif // QTREEWIDGETITEMITERATOR_H