qtreewidget.h 17 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 QTREEWIDGET_H
  40. #define QTREEWIDGET_H
  41. #include <QtWidgets/qtreeview.h>
  42. #include <QtWidgets/qtreewidgetitemiterator.h>
  43. #include <QtCore/qvariant.h>
  44. #include <QtCore/qvector.h>
  45. QT_BEGIN_NAMESPACE
  46. #ifndef QT_NO_TREEWIDGET
  47. class QTreeWidget;
  48. class QTreeModel;
  49. class QWidgetItemData;
  50. class QTreeWidgetItemPrivate;
  51. class Q_WIDGETS_EXPORT QTreeWidgetItem
  52. {
  53. friend class QTreeModel;
  54. friend class QTreeWidget;
  55. friend class QTreeWidgetPrivate;
  56. friend class QTreeWidgetItemIterator;
  57. friend class QTreeWidgetItemPrivate;
  58. public:
  59. enum ItemType { Type = 0, UserType = 1000 };
  60. explicit QTreeWidgetItem(int type = Type);
  61. explicit QTreeWidgetItem(const QStringList &strings, int type = Type);
  62. explicit QTreeWidgetItem(QTreeWidget *view, int type = Type);
  63. QTreeWidgetItem(QTreeWidget *view, const QStringList &strings, int type = Type);
  64. QTreeWidgetItem(QTreeWidget *view, QTreeWidgetItem *after, int type = Type);
  65. explicit QTreeWidgetItem(QTreeWidgetItem *parent, int type = Type);
  66. QTreeWidgetItem(QTreeWidgetItem *parent, const QStringList &strings, int type = Type);
  67. QTreeWidgetItem(QTreeWidgetItem *parent, QTreeWidgetItem *after, int type = Type);
  68. QTreeWidgetItem(const QTreeWidgetItem &other);
  69. virtual ~QTreeWidgetItem();
  70. virtual QTreeWidgetItem *clone() const;
  71. inline QTreeWidget *treeWidget() const { return view; }
  72. inline void setSelected(bool select);
  73. inline bool isSelected() const;
  74. inline void setHidden(bool hide);
  75. inline bool isHidden() const;
  76. inline void setExpanded(bool expand);
  77. inline bool isExpanded() const;
  78. inline void setFirstColumnSpanned(bool span);
  79. inline bool isFirstColumnSpanned() const;
  80. inline void setDisabled(bool disabled);
  81. inline bool isDisabled() const;
  82. enum ChildIndicatorPolicy { ShowIndicator, DontShowIndicator, DontShowIndicatorWhenChildless };
  83. void setChildIndicatorPolicy(QTreeWidgetItem::ChildIndicatorPolicy policy);
  84. QTreeWidgetItem::ChildIndicatorPolicy childIndicatorPolicy() const;
  85. Qt::ItemFlags flags() const;
  86. void setFlags(Qt::ItemFlags flags);
  87. inline QString text(int column) const
  88. { return data(column, Qt::DisplayRole).toString(); }
  89. inline void setText(int column, const QString &text);
  90. inline QIcon icon(int column) const
  91. { return qvariant_cast<QIcon>(data(column, Qt::DecorationRole)); }
  92. inline void setIcon(int column, const QIcon &icon);
  93. inline QString statusTip(int column) const
  94. { return data(column, Qt::StatusTipRole).toString(); }
  95. inline void setStatusTip(int column, const QString &statusTip);
  96. #ifndef QT_NO_TOOLTIP
  97. inline QString toolTip(int column) const
  98. { return data(column, Qt::ToolTipRole).toString(); }
  99. inline void setToolTip(int column, const QString &toolTip);
  100. #endif
  101. #ifndef QT_NO_WHATSTHIS
  102. inline QString whatsThis(int column) const
  103. { return data(column, Qt::WhatsThisRole).toString(); }
  104. inline void setWhatsThis(int column, const QString &whatsThis);
  105. #endif
  106. inline QFont font(int column) const
  107. { return qvariant_cast<QFont>(data(column, Qt::FontRole)); }
  108. inline void setFont(int column, const QFont &font);
  109. inline int textAlignment(int column) const
  110. { return data(column, Qt::TextAlignmentRole).toInt(); }
  111. inline void setTextAlignment(int column, int alignment)
  112. { setData(column, Qt::TextAlignmentRole, alignment); }
  113. inline QColor backgroundColor(int column) const
  114. { return qvariant_cast<QColor>(data(column, Qt::BackgroundColorRole)); }
  115. inline void setBackgroundColor(int column, const QColor &color)
  116. { setData(column, Qt::BackgroundColorRole, color); }
  117. inline QBrush background(int column) const
  118. { return qvariant_cast<QBrush>(data(column, Qt::BackgroundRole)); }
  119. inline void setBackground(int column, const QBrush &brush)
  120. { setData(column, Qt::BackgroundRole, brush); }
  121. inline QColor textColor(int column) const
  122. { return qvariant_cast<QColor>(data(column, Qt::TextColorRole)); }
  123. inline void setTextColor(int column, const QColor &color)
  124. { setData(column, Qt::TextColorRole, color); }
  125. inline QBrush foreground(int column) const
  126. { return qvariant_cast<QBrush>(data(column, Qt::ForegroundRole)); }
  127. inline void setForeground(int column, const QBrush &brush)
  128. { setData(column, Qt::ForegroundRole, brush); }
  129. inline Qt::CheckState checkState(int column) const
  130. { return static_cast<Qt::CheckState>(data(column, Qt::CheckStateRole).toInt()); }
  131. inline void setCheckState(int column, Qt::CheckState state)
  132. { setData(column, Qt::CheckStateRole, state); }
  133. inline QSize sizeHint(int column) const
  134. { return qvariant_cast<QSize>(data(column, Qt::SizeHintRole)); }
  135. inline void setSizeHint(int column, const QSize &size)
  136. { setData(column, Qt::SizeHintRole, size); }
  137. virtual QVariant data(int column, int role) const;
  138. virtual void setData(int column, int role, const QVariant &value);
  139. virtual bool operator<(const QTreeWidgetItem &other) const;
  140. #ifndef QT_NO_DATASTREAM
  141. virtual void read(QDataStream &in);
  142. virtual void write(QDataStream &out) const;
  143. #endif
  144. QTreeWidgetItem &operator=(const QTreeWidgetItem &other);
  145. inline QTreeWidgetItem *parent() const { return par; }
  146. inline QTreeWidgetItem *child(int index) const {
  147. if (index < 0 || index >= children.size())
  148. return Q_NULLPTR;
  149. executePendingSort();
  150. return children.at(index);
  151. }
  152. inline int childCount() const { return children.count(); }
  153. inline int columnCount() const { return values.count(); }
  154. inline int indexOfChild(QTreeWidgetItem *child) const;
  155. void addChild(QTreeWidgetItem *child);
  156. void insertChild(int index, QTreeWidgetItem *child);
  157. void removeChild(QTreeWidgetItem *child);
  158. QTreeWidgetItem *takeChild(int index);
  159. void addChildren(const QList<QTreeWidgetItem*> &children);
  160. void insertChildren(int index, const QList<QTreeWidgetItem*> &children);
  161. QList<QTreeWidgetItem*> takeChildren();
  162. inline int type() const { return rtti; }
  163. inline void sortChildren(int column, Qt::SortOrder order)
  164. { sortChildren(column, order, false); }
  165. protected:
  166. void emitDataChanged();
  167. private:
  168. void sortChildren(int column, Qt::SortOrder order, bool climb);
  169. QVariant childrenCheckState(int column) const;
  170. void itemChanged();
  171. void executePendingSort() const;
  172. int rtti;
  173. // One item has a vector of column entries. Each column has a vector of (role, value) pairs.
  174. QVector< QVector<QWidgetItemData> > values;
  175. QTreeWidget *view;
  176. QTreeWidgetItemPrivate *d;
  177. QTreeWidgetItem *par;
  178. QList<QTreeWidgetItem*> children;
  179. Qt::ItemFlags itemFlags;
  180. };
  181. inline void QTreeWidgetItem::setText(int column, const QString &atext)
  182. { setData(column, Qt::DisplayRole, atext); }
  183. inline void QTreeWidgetItem::setIcon(int column, const QIcon &aicon)
  184. { setData(column, Qt::DecorationRole, aicon); }
  185. #ifndef QT_NO_STATUSTIP
  186. inline void QTreeWidgetItem::setStatusTip(int column, const QString &astatusTip)
  187. { setData(column, Qt::StatusTipRole, astatusTip); }
  188. #endif
  189. #ifndef QT_NO_TOOLTIP
  190. inline void QTreeWidgetItem::setToolTip(int column, const QString &atoolTip)
  191. { setData(column, Qt::ToolTipRole, atoolTip); }
  192. #endif
  193. #ifndef QT_NO_WHATSTHIS
  194. inline void QTreeWidgetItem::setWhatsThis(int column, const QString &awhatsThis)
  195. { setData(column, Qt::WhatsThisRole, awhatsThis); }
  196. #endif
  197. inline void QTreeWidgetItem::setFont(int column, const QFont &afont)
  198. { setData(column, Qt::FontRole, afont); }
  199. inline int QTreeWidgetItem::indexOfChild(QTreeWidgetItem *achild) const
  200. { executePendingSort(); return children.indexOf(achild); }
  201. #ifndef QT_NO_DATASTREAM
  202. Q_WIDGETS_EXPORT QDataStream &operator<<(QDataStream &out, const QTreeWidgetItem &item);
  203. Q_WIDGETS_EXPORT QDataStream &operator>>(QDataStream &in, QTreeWidgetItem &item);
  204. #endif
  205. class QTreeWidgetPrivate;
  206. class Q_WIDGETS_EXPORT QTreeWidget : public QTreeView
  207. {
  208. Q_OBJECT
  209. Q_PROPERTY(int columnCount READ columnCount WRITE setColumnCount)
  210. Q_PROPERTY(int topLevelItemCount READ topLevelItemCount)
  211. friend class QTreeModel;
  212. friend class QTreeWidgetItem;
  213. public:
  214. explicit QTreeWidget(QWidget *parent = Q_NULLPTR);
  215. ~QTreeWidget();
  216. int columnCount() const;
  217. void setColumnCount(int columns);
  218. QTreeWidgetItem *invisibleRootItem() const;
  219. QTreeWidgetItem *topLevelItem(int index) const;
  220. int topLevelItemCount() const;
  221. void insertTopLevelItem(int index, QTreeWidgetItem *item);
  222. void addTopLevelItem(QTreeWidgetItem *item);
  223. QTreeWidgetItem *takeTopLevelItem(int index);
  224. int indexOfTopLevelItem(QTreeWidgetItem *item) const;
  225. void insertTopLevelItems(int index, const QList<QTreeWidgetItem*> &items);
  226. void addTopLevelItems(const QList<QTreeWidgetItem*> &items);
  227. QTreeWidgetItem *headerItem() const;
  228. void setHeaderItem(QTreeWidgetItem *item);
  229. void setHeaderLabels(const QStringList &labels);
  230. inline void setHeaderLabel(const QString &label);
  231. QTreeWidgetItem *currentItem() const;
  232. int currentColumn() const;
  233. void setCurrentItem(QTreeWidgetItem *item);
  234. void setCurrentItem(QTreeWidgetItem *item, int column);
  235. void setCurrentItem(QTreeWidgetItem *item, int column, QItemSelectionModel::SelectionFlags command);
  236. QTreeWidgetItem *itemAt(const QPoint &p) const;
  237. inline QTreeWidgetItem *itemAt(int x, int y) const;
  238. QRect visualItemRect(const QTreeWidgetItem *item) const;
  239. int sortColumn() const;
  240. void sortItems(int column, Qt::SortOrder order);
  241. void editItem(QTreeWidgetItem *item, int column = 0);
  242. void openPersistentEditor(QTreeWidgetItem *item, int column = 0);
  243. void closePersistentEditor(QTreeWidgetItem *item, int column = 0);
  244. QWidget *itemWidget(QTreeWidgetItem *item, int column) const;
  245. void setItemWidget(QTreeWidgetItem *item, int column, QWidget *widget);
  246. inline void removeItemWidget(QTreeWidgetItem *item, int column);
  247. bool isItemSelected(const QTreeWidgetItem *item) const;
  248. void setItemSelected(const QTreeWidgetItem *item, bool select);
  249. QList<QTreeWidgetItem*> selectedItems() const;
  250. QList<QTreeWidgetItem*> findItems(const QString &text, Qt::MatchFlags flags,
  251. int column = 0) const;
  252. bool isItemHidden(const QTreeWidgetItem *item) const;
  253. void setItemHidden(const QTreeWidgetItem *item, bool hide);
  254. bool isItemExpanded(const QTreeWidgetItem *item) const;
  255. void setItemExpanded(const QTreeWidgetItem *item, bool expand);
  256. bool isFirstItemColumnSpanned(const QTreeWidgetItem *item) const;
  257. void setFirstItemColumnSpanned(const QTreeWidgetItem *item, bool span);
  258. QTreeWidgetItem *itemAbove(const QTreeWidgetItem *item) const;
  259. QTreeWidgetItem *itemBelow(const QTreeWidgetItem *item) const;
  260. void setSelectionModel(QItemSelectionModel *selectionModel) Q_DECL_OVERRIDE;
  261. public Q_SLOTS:
  262. void scrollToItem(const QTreeWidgetItem *item,
  263. QAbstractItemView::ScrollHint hint = EnsureVisible);
  264. void expandItem(const QTreeWidgetItem *item);
  265. void collapseItem(const QTreeWidgetItem *item);
  266. void clear();
  267. Q_SIGNALS:
  268. void itemPressed(QTreeWidgetItem *item, int column);
  269. void itemClicked(QTreeWidgetItem *item, int column);
  270. void itemDoubleClicked(QTreeWidgetItem *item, int column);
  271. void itemActivated(QTreeWidgetItem *item, int column);
  272. void itemEntered(QTreeWidgetItem *item, int column);
  273. void itemChanged(QTreeWidgetItem *item, int column);
  274. void itemExpanded(QTreeWidgetItem *item);
  275. void itemCollapsed(QTreeWidgetItem *item);
  276. void currentItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *previous);
  277. void itemSelectionChanged();
  278. protected:
  279. bool event(QEvent *e) Q_DECL_OVERRIDE;
  280. virtual QStringList mimeTypes() const;
  281. #if QT_VERSION >= QT_VERSION_CHECK(6,0,0)
  282. virtual QMimeData *mimeData(const QList<QTreeWidgetItem *> &items) const;
  283. #else
  284. virtual QMimeData *mimeData(const QList<QTreeWidgetItem*> items) const;
  285. #endif
  286. virtual bool dropMimeData(QTreeWidgetItem *parent, int index,
  287. const QMimeData *data, Qt::DropAction action);
  288. virtual Qt::DropActions supportedDropActions() const;
  289. QList<QTreeWidgetItem*> items(const QMimeData *data) const;
  290. QModelIndex indexFromItem(const QTreeWidgetItem *item, int column = 0) const;
  291. QModelIndex indexFromItem(QTreeWidgetItem *item, int column = 0) const; // ### Qt 6: remove
  292. QTreeWidgetItem *itemFromIndex(const QModelIndex &index) const;
  293. void dropEvent(QDropEvent *event) Q_DECL_OVERRIDE;
  294. private:
  295. void setModel(QAbstractItemModel *model) Q_DECL_OVERRIDE;
  296. Q_DECLARE_PRIVATE(QTreeWidget)
  297. Q_DISABLE_COPY(QTreeWidget)
  298. Q_PRIVATE_SLOT(d_func(), void _q_emitItemPressed(const QModelIndex &index))
  299. Q_PRIVATE_SLOT(d_func(), void _q_emitItemClicked(const QModelIndex &index))
  300. Q_PRIVATE_SLOT(d_func(), void _q_emitItemDoubleClicked(const QModelIndex &index))
  301. Q_PRIVATE_SLOT(d_func(), void _q_emitItemActivated(const QModelIndex &index))
  302. Q_PRIVATE_SLOT(d_func(), void _q_emitItemEntered(const QModelIndex &index))
  303. Q_PRIVATE_SLOT(d_func(), void _q_emitItemChanged(const QModelIndex &index))
  304. Q_PRIVATE_SLOT(d_func(), void _q_emitItemExpanded(const QModelIndex &index))
  305. Q_PRIVATE_SLOT(d_func(), void _q_emitItemCollapsed(const QModelIndex &index))
  306. Q_PRIVATE_SLOT(d_func(), void _q_emitCurrentItemChanged(const QModelIndex &previous, const QModelIndex &current))
  307. Q_PRIVATE_SLOT(d_func(), void _q_sort())
  308. Q_PRIVATE_SLOT(d_func(), void _q_dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight))
  309. Q_PRIVATE_SLOT(d_func(), void _q_selectionChanged(const QItemSelection &selected, const QItemSelection &deselected))
  310. };
  311. inline void QTreeWidget::removeItemWidget(QTreeWidgetItem *item, int column)
  312. { setItemWidget(item, column, Q_NULLPTR); }
  313. inline QTreeWidgetItem *QTreeWidget::itemAt(int ax, int ay) const
  314. { return itemAt(QPoint(ax, ay)); }
  315. inline void QTreeWidget::setHeaderLabel(const QString &alabel)
  316. { setHeaderLabels(QStringList(alabel)); }
  317. inline void QTreeWidgetItem::setSelected(bool aselect)
  318. { if (view) view->setItemSelected(this, aselect); }
  319. inline bool QTreeWidgetItem::isSelected() const
  320. { return (view ? view->isItemSelected(this) : false); }
  321. inline void QTreeWidgetItem::setHidden(bool ahide)
  322. { if (view) view->setItemHidden(this, ahide); }
  323. inline bool QTreeWidgetItem::isHidden() const
  324. { return (view ? view->isItemHidden(this) : false); }
  325. inline void QTreeWidgetItem::setExpanded(bool aexpand)
  326. { if (view) view->setItemExpanded(this, aexpand); }
  327. inline bool QTreeWidgetItem::isExpanded() const
  328. { return (view ? view->isItemExpanded(this) : false); }
  329. inline void QTreeWidgetItem::setFirstColumnSpanned(bool aspan)
  330. { if (view) view->setFirstItemColumnSpanned(this, aspan); }
  331. inline bool QTreeWidgetItem::isFirstColumnSpanned() const
  332. { return (view ? view->isFirstItemColumnSpanned(this) : false); }
  333. inline void QTreeWidgetItem::setDisabled(bool disabled)
  334. { setFlags(disabled ? (flags() & ~Qt::ItemIsEnabled) : flags() | Qt::ItemIsEnabled); }
  335. inline bool QTreeWidgetItem::isDisabled() const
  336. { return !(flags() & Qt::ItemIsEnabled); }
  337. #endif // QT_NO_TREEWIDGET
  338. QT_END_NAMESPACE
  339. #endif // QTREEWIDGET_H