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39
40#ifndef QABSTRACTITEMVIEW_H
41#define QABSTRACTITEMVIEW_H
42
43#include <QtWidgets/qtwidgetsglobal.h>
44#include <QtWidgets/qabstractscrollarea.h>
45#include <QtCore/qabstractitemmodel.h>
46#include <QtCore/qitemselectionmodel.h>
47#include <QtWidgets/qabstractitemdelegate.h>
48
49class tst_QAbstractItemView;
50class tst_QTreeView;
51
52QT_REQUIRE_CONFIG(itemviews);
53
54QT_BEGIN_NAMESPACE
55
56class QMenu;
57class QDrag;
58class QEvent;
59class QAbstractItemViewPrivate;
60
61class Q_WIDGETS_EXPORT QAbstractItemView : public QAbstractScrollArea
62{
63 Q_OBJECT
64 Q_PROPERTY(bool autoScroll READ hasAutoScroll WRITE setAutoScroll)
65 Q_PROPERTY(int autoScrollMargin READ autoScrollMargin WRITE setAutoScrollMargin)
66 Q_PROPERTY(EditTriggers editTriggers READ editTriggers WRITE setEditTriggers)
67 Q_PROPERTY(bool tabKeyNavigation READ tabKeyNavigation WRITE setTabKeyNavigation)
68#if QT_CONFIG(draganddrop)
69 Q_PROPERTY(bool showDropIndicator READ showDropIndicator WRITE setDropIndicatorShown)
70 Q_PROPERTY(bool dragEnabled READ dragEnabled WRITE setDragEnabled)
71 Q_PROPERTY(bool dragDropOverwriteMode READ dragDropOverwriteMode WRITE setDragDropOverwriteMode)
72 Q_PROPERTY(DragDropMode dragDropMode READ dragDropMode WRITE setDragDropMode)
73 Q_PROPERTY(Qt::DropAction defaultDropAction READ defaultDropAction WRITE setDefaultDropAction)
74#endif
75 Q_PROPERTY(bool alternatingRowColors READ alternatingRowColors WRITE setAlternatingRowColors)
76 Q_PROPERTY(SelectionMode selectionMode READ selectionMode WRITE setSelectionMode)
77 Q_PROPERTY(SelectionBehavior selectionBehavior READ selectionBehavior WRITE setSelectionBehavior)
78 Q_PROPERTY(QSize iconSize READ iconSize WRITE setIconSize NOTIFY iconSizeChanged)
79 Q_PROPERTY(Qt::TextElideMode textElideMode READ textElideMode WRITE setTextElideMode)
80 Q_PROPERTY(ScrollMode verticalScrollMode READ verticalScrollMode WRITE setVerticalScrollMode RESET resetVerticalScrollMode)
81 Q_PROPERTY(ScrollMode horizontalScrollMode READ horizontalScrollMode WRITE setHorizontalScrollMode RESET resetHorizontalScrollMode)
82
83public:
84 enum SelectionMode {
85 NoSelection,
86 SingleSelection,
87 MultiSelection,
88 ExtendedSelection,
89 ContiguousSelection
90 };
91 Q_ENUM(SelectionMode)
92
93 enum SelectionBehavior {
94 SelectItems,
95 SelectRows,
96 SelectColumns
97 };
98 Q_ENUM(SelectionBehavior)
99
100 enum ScrollHint {
101 EnsureVisible,
102 PositionAtTop,
103 PositionAtBottom,
104 PositionAtCenter
105 };
106 Q_ENUM(ScrollHint)
107
108 enum EditTrigger {
109 NoEditTriggers = 0,
110 CurrentChanged = 1,
111 DoubleClicked = 2,
112 SelectedClicked = 4,
113 EditKeyPressed = 8,
114 AnyKeyPressed = 16,
115 AllEditTriggers = 31
116 };
117
118 Q_DECLARE_FLAGS(EditTriggers, EditTrigger)
119 Q_FLAG(EditTriggers)
120
121 enum ScrollMode {
122 ScrollPerItem,
123 ScrollPerPixel
124 };
125 Q_ENUM(ScrollMode)
126
127 explicit QAbstractItemView(QWidget *parent = nullptr);
128 ~QAbstractItemView();
129
130 virtual void setModel(QAbstractItemModel *model);
131 QAbstractItemModel *model() const;
132
133 virtual void setSelectionModel(QItemSelectionModel *selectionModel);
134 QItemSelectionModel *selectionModel() const;
135
136 void setItemDelegate(QAbstractItemDelegate *delegate);
137 QAbstractItemDelegate *itemDelegate() const;
138
139 void setSelectionMode(QAbstractItemView::SelectionMode mode);
140 QAbstractItemView::SelectionMode selectionMode() const;
141
142 void setSelectionBehavior(QAbstractItemView::SelectionBehavior behavior);
143 QAbstractItemView::SelectionBehavior selectionBehavior() const;
144
145 QModelIndex currentIndex() const;
146 QModelIndex rootIndex() const;
147
148 void setEditTriggers(EditTriggers triggers);
149 EditTriggers editTriggers() const;
150
151 void setVerticalScrollMode(ScrollMode mode);
152 ScrollMode verticalScrollMode() const;
153 void resetVerticalScrollMode();
154
155 void setHorizontalScrollMode(ScrollMode mode);
156 ScrollMode horizontalScrollMode() const;
157 void resetHorizontalScrollMode();
158
159 void setAutoScroll(bool enable);
160 bool hasAutoScroll() const;
161
162 void setAutoScrollMargin(int margin);
163 int autoScrollMargin() const;
164
165 void setTabKeyNavigation(bool enable);
166 bool tabKeyNavigation() const;
167
168#if QT_CONFIG(draganddrop)
169 void setDropIndicatorShown(bool enable);
170 bool showDropIndicator() const;
171
172 void setDragEnabled(bool enable);
173 bool dragEnabled() const;
174
175 void setDragDropOverwriteMode(bool overwrite);
176 bool dragDropOverwriteMode() const;
177
178 enum DragDropMode {
179 NoDragDrop,
180 DragOnly,
181 DropOnly,
182 DragDrop,
183 InternalMove
184 };
185 Q_ENUM(DragDropMode)
186
187 void setDragDropMode(DragDropMode behavior);
188 DragDropMode dragDropMode() const;
189
190 void setDefaultDropAction(Qt::DropAction dropAction);
191 Qt::DropAction defaultDropAction() const;
192#endif
193
194 void setAlternatingRowColors(bool enable);
195 bool alternatingRowColors() const;
196
197 void setIconSize(const QSize &size);
198 QSize iconSize() const;
199
200 void setTextElideMode(Qt::TextElideMode mode);
201 Qt::TextElideMode textElideMode() const;
202
203 virtual void keyboardSearch(const QString &search);
204
205 virtual QRect visualRect(const QModelIndex &index) const = 0;
206 virtual void scrollTo(const QModelIndex &index, ScrollHint hint = EnsureVisible) = 0;
207 virtual QModelIndex indexAt(const QPoint &point) const = 0;
208
209 QSize sizeHintForIndex(const QModelIndex &index) const;
210 virtual int sizeHintForRow(int row) const;
211 virtual int sizeHintForColumn(int column) const;
212
213 void openPersistentEditor(const QModelIndex &index);
214 void closePersistentEditor(const QModelIndex &index);
215 bool isPersistentEditorOpen(const QModelIndex &index) const;
216
217 void setIndexWidget(const QModelIndex &index, QWidget *widget);
218 QWidget *indexWidget(const QModelIndex &index) const;
219
220 void setItemDelegateForRow(int row, QAbstractItemDelegate *delegate);
221 QAbstractItemDelegate *itemDelegateForRow(int row) const;
222
223 void setItemDelegateForColumn(int column, QAbstractItemDelegate *delegate);
224 QAbstractItemDelegate *itemDelegateForColumn(int column) const;
225
226 QAbstractItemDelegate *itemDelegate(const QModelIndex &index) const;
227
228 virtual QVariant inputMethodQuery(Qt::InputMethodQuery query) const override;
229
230 using QAbstractScrollArea::update;
231
232public Q_SLOTS:
233 virtual void reset();
234 virtual void setRootIndex(const QModelIndex &index);
235 virtual void doItemsLayout();
236 virtual void selectAll();
237 void edit(const QModelIndex &index);
238 void clearSelection();
239 void setCurrentIndex(const QModelIndex &index);
240 void scrollToTop();
241 void scrollToBottom();
242 void update(const QModelIndex &index);
243
244protected Q_SLOTS:
245 virtual void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight, const QVector<int> &roles = QVector<int>());
246 virtual void rowsInserted(const QModelIndex &parent, int start, int end);
247 virtual void rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end);
248 virtual void selectionChanged(const QItemSelection &selected, const QItemSelection &deselected);
249 virtual void currentChanged(const QModelIndex &current, const QModelIndex &previous);
250 virtual void updateEditorData();
251 virtual void updateEditorGeometries();
252 virtual void updateGeometries();
253 virtual void verticalScrollbarAction(int action);
254 virtual void horizontalScrollbarAction(int action);
255 virtual void verticalScrollbarValueChanged(int value);
256 virtual void horizontalScrollbarValueChanged(int value);
257 virtual void closeEditor(QWidget *editor, QAbstractItemDelegate::EndEditHint hint);
258 virtual void commitData(QWidget *editor);
259 virtual void editorDestroyed(QObject *editor);
260
261Q_SIGNALS:
262 void pressed(const QModelIndex &index);
263 void clicked(const QModelIndex &index);
264 void doubleClicked(const QModelIndex &index);
265
266 void activated(const QModelIndex &index);
267 void entered(const QModelIndex &index);
268 void viewportEntered();
269
270 void iconSizeChanged(const QSize &size);
271
272protected:
273 QAbstractItemView(QAbstractItemViewPrivate &, QWidget *parent = nullptr);
274
275#if QT_DEPRECATED_SINCE(5, 13)
276 QT_DEPRECATED void setHorizontalStepsPerItem(int steps);
277 QT_DEPRECATED int horizontalStepsPerItem() const;
278 QT_DEPRECATED void setVerticalStepsPerItem(int steps);
279 QT_DEPRECATED int verticalStepsPerItem() const;
280#endif
281
282 enum CursorAction { MoveUp, MoveDown, MoveLeft, MoveRight,
283 MoveHome, MoveEnd, MovePageUp, MovePageDown,
284 MoveNext, MovePrevious };
285 virtual QModelIndex moveCursor(CursorAction cursorAction,
286 Qt::KeyboardModifiers modifiers) = 0;
287
288 virtual int horizontalOffset() const = 0;
289 virtual int verticalOffset() const = 0;
290
291 virtual bool isIndexHidden(const QModelIndex &index) const = 0;
292
293 virtual void setSelection(const QRect &rect, QItemSelectionModel::SelectionFlags command) = 0;
294 virtual QRegion visualRegionForSelection(const QItemSelection &selection) const = 0;
295 virtual QModelIndexList selectedIndexes() const;
296
297 virtual bool edit(const QModelIndex &index, EditTrigger trigger, QEvent *event);
298
299 virtual QItemSelectionModel::SelectionFlags selectionCommand(const QModelIndex &index,
300 const QEvent *event = nullptr) const;
301
302#if QT_CONFIG(draganddrop)
303 virtual void startDrag(Qt::DropActions supportedActions);
304#endif
305
306 virtual QStyleOptionViewItem viewOptions() const;
307
308 enum State {
309 NoState,
310 DraggingState,
311 DragSelectingState,
312 EditingState,
313 ExpandingState,
314 CollapsingState,
315 AnimatingState
316 };
317
318 State state() const;
319 void setState(State state);
320
321 void scheduleDelayedItemsLayout();
322 void executeDelayedItemsLayout();
323
324 void setDirtyRegion(const QRegion &region);
325 void scrollDirtyRegion(int dx, int dy);
326 QPoint dirtyRegionOffset() const;
327
328 void startAutoScroll();
329 void stopAutoScroll();
330 void doAutoScroll();
331
332 bool focusNextPrevChild(bool next) override;
333 bool event(QEvent *event) override;
334 bool viewportEvent(QEvent *event) override;
335 void mousePressEvent(QMouseEvent *event) override;
336 void mouseMoveEvent(QMouseEvent *event) override;
337 void mouseReleaseEvent(QMouseEvent *event) override;
338 void mouseDoubleClickEvent(QMouseEvent *event) override;
339#if QT_CONFIG(draganddrop)
340 void dragEnterEvent(QDragEnterEvent *event) override;
341 void dragMoveEvent(QDragMoveEvent *event) override;
342 void dragLeaveEvent(QDragLeaveEvent *event) override;
343 void dropEvent(QDropEvent *event) override;
344#endif
345 void focusInEvent(QFocusEvent *event) override;
346 void focusOutEvent(QFocusEvent *event) override;
347 void keyPressEvent(QKeyEvent *event) override;
348 void resizeEvent(QResizeEvent *event) override;
349 void timerEvent(QTimerEvent *event) override;
350 void inputMethodEvent(QInputMethodEvent *event) override;
351 bool eventFilter(QObject *object, QEvent *event) override;
352
353#if QT_CONFIG(draganddrop)
354 enum DropIndicatorPosition { OnItem, AboveItem, BelowItem, OnViewport };
355 DropIndicatorPosition dropIndicatorPosition() const;
356#endif
357
358 QSize viewportSizeHint() const override;
359
360private:
361 Q_DECLARE_PRIVATE(QAbstractItemView)
362 Q_DISABLE_COPY(QAbstractItemView)
363 Q_PRIVATE_SLOT(d_func(), void _q_columnsAboutToBeRemoved(const QModelIndex&, int, int))
364 Q_PRIVATE_SLOT(d_func(), void _q_columnsRemoved(const QModelIndex&, int, int))
365 Q_PRIVATE_SLOT(d_func(), void _q_columnsInserted(const QModelIndex&, int, int))
366 Q_PRIVATE_SLOT(d_func(), void _q_rowsInserted(const QModelIndex&, int, int))
367 Q_PRIVATE_SLOT(d_func(), void _q_rowsRemoved(const QModelIndex&, int, int))
368 Q_PRIVATE_SLOT(d_func(), void _q_columnsMoved(const QModelIndex&, int, int, const QModelIndex&, int))
369 Q_PRIVATE_SLOT(d_func(), void _q_rowsMoved(const QModelIndex&, int, int, const QModelIndex&, int))
370 Q_PRIVATE_SLOT(d_func(), void _q_modelDestroyed())
371 Q_PRIVATE_SLOT(d_func(), void _q_layoutChanged())
372 Q_PRIVATE_SLOT(d_func(), void _q_headerDataChanged())
373#if QT_CONFIG(gestures) && QT_CONFIG(scroller)
374 Q_PRIVATE_SLOT(d_func(), void _q_scrollerStateChanged())
375#endif
376
377 friend class ::tst_QAbstractItemView;
378 friend class ::tst_QTreeView;
379 friend class QTreeViewPrivate; // needed to compile with MSVC
380 friend class QListModeViewBase;
381 friend class QListViewPrivate;
382 friend class QAbstractSlider;
383};
384
385Q_DECLARE_OPERATORS_FOR_FLAGS(QAbstractItemView::EditTriggers)
386
387QT_END_NAMESPACE
388
389#endif // QABSTRACTITEMVIEW_H
390

source code of qtbase/src/widgets/itemviews/qabstractitemview.h