com.trolltech.qt.gui
Class QAbstractItemView

java.lang.Object
  extended by com.trolltech.qt.internal.QSignalEmitterInternal
      extended by com.trolltech.qt.QSignalEmitter
          extended by com.trolltech.qt.QtJambiObject
              extended by com.trolltech.qt.core.QObject
                  extended by com.trolltech.qt.gui.QWidget
                      extended by com.trolltech.qt.gui.QFrame
                          extended by com.trolltech.qt.gui.QAbstractScrollArea
                              extended by com.trolltech.qt.gui.QAbstractItemView
All Implemented Interfaces:
QPaintDeviceInterface, QtJambiInterface
Direct Known Subclasses:
QColumnView, QHeaderView, QListView, QTableView, QTreeView

public abstract class QAbstractItemView
extends QAbstractScrollArea

The QAbstractItemView class provides the basic functionality for item view classes. QAbstractItemView class is the base class for every standard view that uses a QAbstractItemModel. QAbstractItemView is an abstract class and cannot itself be instantiated. It provides a standard interface for interoperating with models through the signals and slots mechanism, enabling subclasses to be kept up-to-date with changes to their models. This class provides standard support for keyboard and mouse navigation, viewport scrolling, item editing, and selections.

The QAbstractItemView class is one of the Model/View Classes and is part of Qt's model/view framework.

The view classes that inherit QAbstractItemView only need to implement their own view-specific functionality, such as drawing items, returning the geometry of items, finding items, etc.

QAbstractItemView provides common slots such as edit() and setCurrentIndex(). Many protected slots are also provided, including dataChanged(), rowsInserted(), rowsAboutToBeRemoved(), selectionChanged(), and currentChanged().

The root item is returned by rootIndex(), and the current item by currentIndex(). To make sure that an item is visible use scrollTo().

Some of QAbstractItemView's functions are concerned with scrolling, for example setHorizontalScrollMode() and setVerticalScrollMode(). To set the range of the scroll bars, you can, for example, reimplement the view's resizeEvent() function:

The following code example is written in c++.

void MyView::resizeEvent(QResizeEvent *event) {
    horizontalScrollBar()->setRange(0, realWidth - width());
    ...
}
Note that the range is not updated until the widget is shown.

Several other functions are concerned with selection control; for example setSelectionMode(), and setSelectionBehavior(). This class provides a default selection model to work with (selectionModel()), but this can be replaced by using setSelectionModel() with an instance of QItemSelectionModel.

For complete control over the display and editing of items you can specify a delegate with setItemDelegate().

QAbstractItemView provides a lot of protected functions. Some are concerned with editing, for example, edit(), and commitData(), whilst others are keyboard and mouse event handlers.

Note: If you inherit QAbstractItemView and intend to update the contents of the viewport, you should use viewport->update() instead of update() as all painting operations take place on the viewport.

See also:
View Classes, Model/View Programming, QAbstractItemModel, and Chart Example.


Nested Class Summary
static class QAbstractItemView.CursorAction
          This enum describes the different ways to navigate between items,
static class QAbstractItemView.DragDropMode
          Describes the various drag and drop events the view can act upon.
static class QAbstractItemView.DropIndicatorPosition
          This enum indicates the position of the drop indicator in relation to the index at the current mouse position.
static class QAbstractItemView.EditTrigger
          This enum describes actions which will initiate item editing.
static class QAbstractItemView.EditTriggers
           
static class QAbstractItemView.ScrollHint
           
static class QAbstractItemView.ScrollMode
           
static class QAbstractItemView.SelectionBehavior
           
static class QAbstractItemView.SelectionMode
          This enum indicates how the view responds to user selections.
static class QAbstractItemView.State
          Describes the different states the view can be in.
 
Nested classes/interfaces inherited from class com.trolltech.qt.gui.QFrame
QFrame.Shadow, QFrame.Shape, QFrame.StyleMask
 
Nested classes/interfaces inherited from class com.trolltech.qt.gui.QWidget
QWidget.RenderFlag, QWidget.RenderFlags
 
Nested classes/interfaces inherited from class com.trolltech.qt.QSignalEmitter
QSignalEmitter.AbstractSignal, QSignalEmitter.PrivateSignal0, QSignalEmitter.PrivateSignal1, QSignalEmitter.PrivateSignal2, QSignalEmitter.PrivateSignal3, QSignalEmitter.PrivateSignal4, QSignalEmitter.PrivateSignal5, QSignalEmitter.PrivateSignal6, QSignalEmitter.PrivateSignal7, QSignalEmitter.PrivateSignal8, QSignalEmitter.PrivateSignal9, QSignalEmitter.Signal0, QSignalEmitter.Signal1, QSignalEmitter.Signal2, QSignalEmitter.Signal3, QSignalEmitter.Signal4, QSignalEmitter.Signal5, QSignalEmitter.Signal6, QSignalEmitter.Signal7, QSignalEmitter.Signal8, QSignalEmitter.Signal9
 
Nested classes/interfaces inherited from class com.trolltech.qt.internal.QSignalEmitterInternal
com.trolltech.qt.internal.QSignalEmitterInternal.AbstractSignalInternal
 
Field Summary
 QSignalEmitter.Signal1 activated
          This signal takes 1 generic argument(s).
 QSignalEmitter.Signal1 clicked
          This signal takes 1 generic argument(s).
 QSignalEmitter.Signal1 doubleClicked
          This signal takes 1 generic argument(s).
 QSignalEmitter.Signal1 entered
          This signal takes 1 generic argument(s).
 QSignalEmitter.Signal1 pressed
          This signal takes 1 generic argument(s).
 QSignalEmitter.Signal0 viewportEntered
          This signal is emitted when the mouse cursor enters the viewport.
 
Fields inherited from class com.trolltech.qt.gui.QWidget
customContextMenuRequested
 
Fields inherited from class com.trolltech.qt.internal.QSignalEmitterInternal
currentSender
 
Constructor Summary
QAbstractItemView()
          Constructs an abstract item view with the given parent.
QAbstractItemView(QWidget parent)
          Constructs an abstract item view with the given parent.
 
Method Summary
 boolean alternatingRowColors()
          This property holds whether to draw the background using alternating colors.
 int autoScrollMargin()
          This property holds the size of the area when auto scrolling is triggered.
 void clearSelection()
          Deselects all selected items.
protected  void closeEditor(QWidget editor, QAbstractItemDelegate.EndEditHint hint)
          Closes the given editor, and releases it.
 void closePersistentEditor(com.trolltech.qt.core.QModelIndex index)
          Closes the persistent editor for the item at the given index.
protected  void commitData(QWidget editor)
          Commit the data in the editor to the model.
protected  void currentChanged(com.trolltech.qt.core.QModelIndex current, com.trolltech.qt.core.QModelIndex previous)
          This slot is called when a new item becomes the current item.
 com.trolltech.qt.core.QModelIndex currentIndex()
          Returns the model index of the current item.
protected  void dataChanged(com.trolltech.qt.core.QModelIndex topLeft, com.trolltech.qt.core.QModelIndex bottomRight)
          This slot is called when items are changed in the model.
protected  QPoint dirtyRegionOffset()
          Returns the offset of the dirty regions in the view.
 QAbstractItemView.DragDropMode dragDropMode()
          This property holds the drag and drop event the view will act upon.
 boolean dragDropOverwriteMode()
          This property holds the view's drag and drop behavior.
 boolean dragEnabled()
          This property holds whether the view supports dragging of its own items.
protected  QAbstractItemView.DropIndicatorPosition dropIndicatorPosition()
          Returns the position of the drop indicator in relation to the closest item.
 void edit(com.trolltech.qt.core.QModelIndex index)
          Starts editing the item corresponding to the given index if it is editable.
protected  boolean edit(com.trolltech.qt.core.QModelIndex index, QAbstractItemView.EditTrigger trigger, QEvent event)
          Starts editing the item at index, creating an editor if necessary, and returns true if the view's State is now EditingState ; otherwise returns false.
protected  void editorDestroyed(QObject editor)
          This function is called when the given editor has been destroyed.
 QAbstractItemView.EditTriggers editTriggers()
          This property holds which actions will initiate item editing.
protected  void executeDelayedItemsLayout()
          Executes the scheduled layouts without waiting for the event processing to begin.
 boolean hasAutoScroll()
          This property holds whether autoscrolling in drag move events is enabled.
protected abstract  int horizontalOffset()
          Returns the horizontal offset of the view.
 QAbstractItemView.ScrollMode horizontalScrollMode()
          This property holds how the view scrolls its contents in the horizontal direction.
 QSize iconSize()
          This property holds the size of items.
abstract  com.trolltech.qt.core.QModelIndex indexAt(QPoint point)
          Returns the model index of the item at the viewport coordinates point.
 QWidget indexWidget(com.trolltech.qt.core.QModelIndex index)
          Returns the widget for the item at the given index.
protected abstract  boolean isIndexHidden(com.trolltech.qt.core.QModelIndex index)
          Returns true if the item referred to by the given index is hidden in the view, otherwise returns false.
 QAbstractItemDelegate itemDelegate()
          Returns the item delegate used by this view and model.
 QAbstractItemDelegate itemDelegate(com.trolltech.qt.core.QModelIndex index)
          Returns the item delegate used by this view and model for the given index.
 QAbstractItemDelegate itemDelegateForColumn(int column)
          Returns the item delegate used by this view and model for the given column.
 QAbstractItemDelegate itemDelegateForRow(int row)
          Returns the item delegate used by this view and model for the given row, or 0 if no delegate has been assigned.
 void keyboardSearch(java.lang.String search)
          Moves to and selects the item best matching the string search.
 QAbstractItemModel model()
          Returns the model that this view is presenting.
protected abstract  com.trolltech.qt.core.QModelIndex moveCursor(QAbstractItemView.CursorAction cursorAction, Qt.KeyboardModifiers modifiers)
          Returns a QModelIndex object pointing to the next object in the view, based on the given cursorAction and keyboard modifiers specified by modifiers.
 void openPersistentEditor(com.trolltech.qt.core.QModelIndex index)
          Opens a persistent editor on the item at the given index.
 void reset()
          Reset the internal state of the view.
 com.trolltech.qt.core.QModelIndex rootIndex()
          Returns the model index of the model's root item.
protected  void rowsAboutToBeRemoved(com.trolltech.qt.core.QModelIndex parent, int start, int end)
          This slot is called when rows are about to be removed.
protected  void rowsInserted(com.trolltech.qt.core.QModelIndex parent, int start, int end)
          This slot is called when rows are inserted.
protected  void scheduleDelayedItemsLayout()
          Schedules a layout of the items in the view to be executed when the event processing starts.
protected  void scrollDirtyRegion(int dx, int dy)
          Prepares the view for scrolling by (dx,dy) pixels by moving the dirty regions in the opposite direction.
 void scrollTo(com.trolltech.qt.core.QModelIndex index)
          Scrolls the view if necessary to ensure that the item at index is visible.
abstract  void scrollTo(com.trolltech.qt.core.QModelIndex index, QAbstractItemView.ScrollHint hint)
          Scrolls the view if necessary to ensure that the item at index is visible.
 void scrollToBottom()
          Scrolls the view to the bottom.
 void scrollToTop()
          Scrolls the view to the top.
 void selectAll()
          Selects all item in the view.
protected  java.util.List selectedIndexes()
          This convenience function returns a list of all selected and non-hidden item indexes in the view.
 QAbstractItemView.SelectionBehavior selectionBehavior()
          This property holds which selection behavior the view uses.
protected  void selectionChanged(QItemSelection selected, QItemSelection deselected)
          This slot is called when the selection is changed.
protected  QItemSelectionModel.SelectionFlags selectionCommand(com.trolltech.qt.core.QModelIndex index)
          Returns the SelectionFlags to be used when updating a selection with to include the index specified.
protected  QItemSelectionModel.SelectionFlags selectionCommand(com.trolltech.qt.core.QModelIndex index, QEvent event)
          Returns the SelectionFlags to be used when updating a selection with to include the index specified.
 QAbstractItemView.SelectionMode selectionMode()
          This property holds which selection mode the view operates in.
 QItemSelectionModel selectionModel()
          Returns the current selection model.
 void setAlternatingRowColors(boolean enable)
          This property holds whether to draw the background using alternating colors.
 void setAutoScroll(boolean enable)
          This property holds whether autoscrolling in drag move events is enabled.
 void setAutoScrollMargin(int margin)
          This property holds the size of the area when auto scrolling is triggered.
 void setCurrentIndex(com.trolltech.qt.core.QModelIndex index)
          Sets the current item to be the item at index.
protected  void setDirtyRegion(QRegion region)
          Marks the given region as dirty and schedules it to be updated.
 void setDragDropMode(QAbstractItemView.DragDropMode behavior)
          This property holds the drag and drop event the view will act upon.
 void setDragDropOverwriteMode(boolean overwrite)
          This property holds the view's drag and drop behavior.
 void setDragEnabled(boolean enable)
          This property holds whether the view supports dragging of its own items.
 void setDropIndicatorShown(boolean enable)
          This property holds whether the drop indicator is shown when dragging items and dropping.
 void setEditTriggers(QAbstractItemView.EditTrigger[] triggers)
          This is an overloaded method provided for convenience.
 void setEditTriggers(QAbstractItemView.EditTriggers triggers)
          This property holds which actions will initiate item editing.
 void setHorizontalScrollMode(QAbstractItemView.ScrollMode mode)
          This property holds how the view scrolls its contents in the horizontal direction.
 void setIconSize(QSize size)
          This property holds the size of items.
 void setIndexWidget(com.trolltech.qt.core.QModelIndex index, QWidget widget)
          Sets the given widget on the item at the given index, passing the ownership of the widget to the viewport.
 void setItemDelegate(QAbstractItemDelegate delegate)
          Sets the item delegate for this view and its model to delegate.
 void setItemDelegateForColumn(int column, QAbstractItemDelegate delegate)
          Sets the given item delegate used by this view and model for the given column.
 void setItemDelegateForRow(int row, QAbstractItemDelegate delegate)
          Sets the given item delegate used by this view and model for the given row.
 void setModel(QAbstractItemModel model)
          Sets the model for the view to present.
 void setRootIndex(com.trolltech.qt.core.QModelIndex index)
          Sets the root item to the item at the given index.
protected abstract  void setSelection(QRect rect, QItemSelectionModel.SelectionFlags command)
          Applies the selection flags to the items in or touched by the rectangle, rect.
 void setSelectionBehavior(QAbstractItemView.SelectionBehavior behavior)
          This property holds which selection behavior the view uses.
 void setSelectionMode(QAbstractItemView.SelectionMode mode)
          This property holds which selection mode the view operates in.
 void setSelectionModel(QItemSelectionModel selectionModel)
          Sets the current selection model to the given selectionModel.
protected  void setState(QAbstractItemView.State state)
          Sets the item view's state to the given state.
 void setTabKeyNavigation(boolean enable)
          This property holds whether item navigation with tab and backtab is enabled.
 void setTextElideMode(Qt.TextElideMode mode)
          This property holds the the position of the ".
 void setVerticalScrollMode(QAbstractItemView.ScrollMode mode)
          This property holds how the view scrolls its contents in the vertical direction.
 boolean showDropIndicator()
          This property holds whether the drop indicator is shown when dragging items and dropping.
 int sizeHintForColumn(int column)
          Returns the width size hint for the specified column or -1 if there is no model.
 QSize sizeHintForIndex(com.trolltech.qt.core.QModelIndex index)
          Returns the size hint for the item with the specified index or an invalid size for invalid indexes.
 int sizeHintForRow(int row)
          Returns the height size hint for the specified row or -1 if there is no model.
protected  void startDrag(Qt.DropAction[] supportedActions)
          This is an overloaded method provided for convenience.
protected  void startDrag(Qt.DropActions supportedActions)
          Starts a drag by calling drag->exec() using the given supportedActions.
protected  QAbstractItemView.State state()
          Returns the item view's state.
 boolean tabKeyNavigation()
          This property holds whether item navigation with tab and backtab is enabled.
 Qt.TextElideMode textElideMode()
          This property holds the the position of the ".
 void update(com.trolltech.qt.core.QModelIndex index)
          Updates the area occupied by the given index.
protected  void updateGeometries()
          Updates the geometry of the child widgets of the view.
protected abstract  int verticalOffset()
          Returns the vertical offset of the view.
 QAbstractItemView.ScrollMode verticalScrollMode()
          This property holds how the view scrolls its contents in the vertical direction.
protected  QStyleOptionViewItem viewOptions()
          Returns a QStyleOptionViewItem structure populated with the view's palette, font, state, alignments etc.
abstract  QRect visualRect(com.trolltech.qt.core.QModelIndex index)
          Returns the rectangle on the viewport occupied by the item at index.
protected abstract  QRegion visualRegionForSelection(QItemSelection selection)
          Returns the region from the viewport of the items in the given selection.
 
Methods inherited from class com.trolltech.qt.gui.QAbstractScrollArea
addScrollBarWidget, addScrollBarWidget, cornerWidget, horizontalScrollBar, horizontalScrollBarPolicy, maximumViewportSize, scrollBarWidgets, scrollBarWidgets, scrollContentsBy, setCornerWidget, setHorizontalScrollBar, setHorizontalScrollBarPolicy, setupViewport, setVerticalScrollBar, setVerticalScrollBarPolicy, setViewport, setViewportMargins, verticalScrollBar, verticalScrollBarPolicy, viewport, viewportEvent
 
Methods inherited from class com.trolltech.qt.gui.QFrame
frameRect, frameShadow, frameShape, frameStyle, frameWidth, lineWidth, midLineWidth, setFrameRect, setFrameShadow, setFrameShape, setFrameStyle, setLineWidth, setMidLineWidth
 
Methods inherited from class com.trolltech.qt.gui.QWidget
acceptDrops, accessibleDescription, accessibleName, actionEvent, actions, activateWindow, addAction, addActions, adjustSize, autoFillBackground, backgroundRole, baseSize, changeEvent, childAt, childAt, childrenRect, childrenRegion, clearFocus, clearMask, close, closeEvent, contentsRect, contextMenuEvent, contextMenuPolicy, cursor, depth, destroy, destroy, destroy, dragEnterEvent, dragLeaveEvent, dragMoveEvent, dropEvent, effectiveWinId, ensurePolished, enterEvent, focusInEvent, focusNextChild, focusNextPrevChild, focusOutEvent, focusPolicy, focusPreviousChild, focusProxy, focusWidget, font, fontInfo, fontMetrics, foregroundRole, frameGeometry, frameSize, geometry, getContentsMargins, grabKeyboard, grabMouse, grabMouse, grabShortcut, grabShortcut, graphicsProxyWidget, hasFocus, hasMouseTracking, height, heightForWidth, heightMM, hide, hideEvent, inputContext, inputMethodEvent, inputMethodQuery, insertAction, insertActions, isActiveWindow, isAncestorOf, isEnabled, isEnabledTo, isFullScreen, isHidden, isMaximized, isMinimized, isModal, isVisible, isVisibleTo, isWindow, isWindowModified, keyboardGrabber, keyPressEvent, keyReleaseEvent, languageChange, layout, layoutDirection, leaveEvent, locale, logicalDpiX, logicalDpiY, lower, mapFrom, mapFromGlobal, mapFromParent, mapTo, mapToGlobal, mapToParent, mask, maximumHeight, maximumSize, maximumWidth, metric, minimumHeight, minimumSize, minimumSizeHint, minimumWidth, mouseDoubleClickEvent, mouseGrabber, mouseMoveEvent, mousePressEvent, mouseReleaseEvent, move, move, moveEvent, nativeParentWidget, nextInFocusChain, normalGeometry, numColors, overrideWindowFlags, overrideWindowFlags, overrideWindowState, paintEngine, paintEvent, paintingActive, palette, parentWidget, physicalDpiX, physicalDpiY, pos, raise, rect, releaseKeyboard, releaseMouse, releaseShortcut, removeAction, render, render, render, render, render, render, render, render, render, repaint, repaint, repaint, repaint, resetInputContext, resize, resize, resizeEvent, restoreGeometry, saveGeometry, scroll, scroll, setAcceptDrops, setAccessibleDescription, setAccessibleName, setAttribute, setAttribute, setAutoFillBackground, setBackgroundRole, setBaseSize, setBaseSize, setContentsMargins, setContentsMargins, setContextMenuPolicy, setCursor, setDisabled, setEnabled, setFixedHeight, setFixedSize, setFixedSize, setFixedWidth, setFocus, setFocus, setFocusPolicy, setFocusProxy, setFont, setForegroundRole, setGeometry, setGeometry, setHidden, setInputContext, setLayout, setLayoutDirection, setLocale, setMask, setMask, setMaximumHeight, setMaximumSize, setMaximumSize, setMaximumWidth, setMinimumHeight, setMinimumSize, setMinimumSize, setMinimumWidth, setMouseTracking, setPalette, setParent, setParent, setParent, setShortcutAutoRepeat, setShortcutAutoRepeat, setShortcutEnabled, setShortcutEnabled, setSizeIncrement, setSizeIncrement, setSizePolicy, setSizePolicy, setStatusTip, setStyle, setStyleSheet, setTabOrder, setToolTip, setUpdatesEnabled, setVisible, setWhatsThis, setWindowFilePath, setWindowFlags, setWindowFlags, setWindowIcon, setWindowIconText, setWindowModality, setWindowModified, setWindowOpacity, setWindowRole, setWindowState, setWindowState, setWindowTitle, show, showEvent, showFullScreen, showMaximized, showMinimized, showNormal, size, sizeHint, sizeIncrement, sizePolicy, stackUnder, statusTip, style, styleSheet, tabletEvent, testAttribute, toolTip, underMouse, unsetCursor, unsetLayoutDirection, unsetLocale, update, update, update, update, updateGeometry, updateMicroFocus, updatesEnabled, visibleRegion, whatsThis, wheelEvent, width, widthMM, window, windowFilePath, windowFlags, windowIcon, windowIconText, windowModality, windowOpacity, windowRole, windowState, windowTitle, windowType, winId, x, y
 
Methods inherited from class com.trolltech.qt.core.QObject
childEvent, children, connectSlotsByName, customEvent, disposeLater, dumpObjectInfo, dumpObjectTree, dynamicPropertyNames, event, eventFilter, findChild, findChild, findChild, findChildren, findChildren, findChildren, findChildren, indexOfProperty, installEventFilter, isWidgetType, killTimer, moveToThread, objectName, parent, properties, property, removeEventFilter, setObjectName, setParent, setProperty, startTimer, timerEvent, toString, userProperty
 
Methods inherited from class com.trolltech.qt.QtJambiObject
dispose, disposed, equals, finalize, reassignNativeResources, tr, tr, tr
 
Methods inherited from class com.trolltech.qt.QSignalEmitter
blockSignals, disconnect, disconnect, signalsBlocked, signalSender, thread
 
Methods inherited from class com.trolltech.qt.internal.QSignalEmitterInternal
__qt_signalInitialization
 
Methods inherited from class java.lang.Object
clone, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface com.trolltech.qt.QtJambiInterface
disableGarbageCollection, nativeId, nativePointer, reenableGarbageCollection, setJavaOwnership
 

Field Detail

activated

public final QSignalEmitter.Signal1 activated

This signal takes 1 generic argument(s). We list their type and the name they go by in the description of this signal. <com.trolltech.qt.core.QModelIndex(named: index)>:

This signal is emitted when the item specified by index is activated by the user. How to activate items depends on the platform; e.g., by single- or double-clicking the item, or by pressing the Return or Enter key when the item is current.

See also:
clicked() , doubleClicked() , entered() , and pressed() .


clicked

public final QSignalEmitter.Signal1 clicked

This signal takes 1 generic argument(s). We list their type and the name they go by in the description of this signal. <com.trolltech.qt.core.QModelIndex(named: index)>:

This signal is emitted when a mouse button is clicked. The item the mouse was clicked on is specified by index. The signal is only emitted when the index is valid.

See also:
activated() , doubleClicked() , entered() , and pressed() .


doubleClicked

public final QSignalEmitter.Signal1 doubleClicked

This signal takes 1 generic argument(s). We list their type and the name they go by in the description of this signal. <com.trolltech.qt.core.QModelIndex(named: index)>:

This signal is emitted when a mouse button is double-clicked. The item the mouse was double-clicked on is specified by index. The signal is only emitted when the index is valid.

See also:
clicked() , and activated() .


entered

public final QSignalEmitter.Signal1 entered

This signal takes 1 generic argument(s). We list their type and the name they go by in the description of this signal. <com.trolltech.qt.core.QModelIndex(named: index)>:

This signal is emitted when the mouse cursor enters the item specified by index. Mouse tracking needs to be enabled for this feature to work.

See also:
viewportEntered() , activated() , clicked() , doubleClicked() , and pressed() .


pressed

public final QSignalEmitter.Signal1 pressed

This signal takes 1 generic argument(s). We list their type and the name they go by in the description of this signal. <com.trolltech.qt.core.QModelIndex(named: index)>:

This signal is emitted when a mouse button is pressed. The item the mouse was pressed on is specified by index. The signal is only emitted when the index is valid.

Use the QApplication::mouseButtons() function to get the state of the mouse buttons.

See also:
activated() , clicked() , doubleClicked() , and entered() .


viewportEntered

public final QSignalEmitter.Signal0 viewportEntered
This signal is emitted when the mouse cursor enters the viewport. Mouse tracking needs to be enabled for this feature to work.

See also:
entered() .

Constructor Detail

QAbstractItemView

public QAbstractItemView()
Constructs an abstract item view with the given parent.


QAbstractItemView

public QAbstractItemView(QWidget parent)
Constructs an abstract item view with the given parent.

Method Detail

alternatingRowColors

public final boolean alternatingRowColors()
This property holds whether to draw the background using alternating colors. If this property is true, the item background will be drawn using QPalette::Base and QPalette::AlternateBase ; otherwise the background will be drawn using the QPalette::Base color.

By default, this property is false.


autoScrollMargin

public final int autoScrollMargin()
This property holds the size of the area when auto scrolling is triggered. This property controlls the size of the area at the edge of the viewport that triggers autoscrolling. The default value is 16 pixels.


clearSelection

public final void clearSelection()
Deselects all selected items. The current index will not be changed.

See also:
setSelection(), and selectAll().


closePersistentEditor

public final void closePersistentEditor(com.trolltech.qt.core.QModelIndex index)
Closes the persistent editor for the item at the given index.

See also:
openPersistentEditor().


currentIndex

public final com.trolltech.qt.core.QModelIndex currentIndex()
Returns the model index of the current item.

See also:
setCurrentIndex().


dirtyRegionOffset

protected final QPoint dirtyRegionOffset()
Returns the offset of the dirty regions in the view.

If you use scrollDirtyRegion() and implement a paintEvent() in a subclass of QAbstractItemView, you should translate the area given by the paint event with the offset returned from this function.

See also:
scrollDirtyRegion(), and setDirtyRegion().


dragDropMode

public final QAbstractItemView.DragDropMode dragDropMode()
This property holds the drag and drop event the view will act upon.

See also:
showDropIndicator, and dragDropOverwriteMode.


dragDropOverwriteMode

public final boolean dragDropOverwriteMode()
This property holds the view's drag and drop behavior. If its value is true, the selected data will overwrite the existing item data when dropped, while moving the data will clear the item. If its value is false, the selected data will be inserted as a new item when the data is dropped. When the data is moved, the item is removed as well.

The default value is false, as in the QListView and QTreeView subclasses. In the QTableView subclass, on the other hand, the property has been set to true.

Note: This is not intended to prevent overwriting of items. The model's implementation of flags() should do that by not returning Qt::ItemIsDropEnabled .

See also:
dragDropMode.


dragEnabled

public final boolean dragEnabled()
This property holds whether the view supports dragging of its own items.

See also:
showDropIndicator, DragDropMode , dragDropOverwriteMode, and acceptDrops.


dropIndicatorPosition

protected final QAbstractItemView.DropIndicatorPosition dropIndicatorPosition()
Returns the position of the drop indicator in relation to the closest item.


edit

public final void edit(com.trolltech.qt.core.QModelIndex index)
Starts editing the item corresponding to the given index if it is editable.

Note that this function does not change the current index. Since the current index defines the next and previous items to edit, users may find that keyboard navigation does not work as expected. To provide consistent navigation behavior, call setCurrentIndex() before this function with the same model index.

See also:
QModelIndex::flags().


editTriggers

public final QAbstractItemView.EditTriggers editTriggers()
This property holds which actions will initiate item editing. This property is a selection of flags defined by EditTrigger , combined using the OR operator. The view will only initiate the editing of an item if the action performed is set in this property.


executeDelayedItemsLayout

protected final void executeDelayedItemsLayout()
Executes the scheduled layouts without waiting for the event processing to begin.

See also:
scheduleDelayedItemsLayout().


hasAutoScroll

public final boolean hasAutoScroll()
This property holds whether autoscrolling in drag move events is enabled. If this property is set to true (the default), the QAbstractItemView automatically scrolls the contents of the view if the user drags within 16 pixels of the viewport edge. If the current item changes, then the view will scroll automatically to ensure that the current item is fully visible.

This property only works if the viewport accepts drops. Autoscroll is switched off by setting this property to false.


horizontalScrollMode

public final QAbstractItemView.ScrollMode horizontalScrollMode()
This property holds how the view scrolls its contents in the horizontal direction. This property controlls how the view scroll its contents horizontally. Scrolling can be done either per pixel or per item.


iconSize

public final QSize iconSize()
This property holds the size of items. Setting this property when the view is visible will cause the items to be laid out again.


indexWidget

public final QWidget indexWidget(com.trolltech.qt.core.QModelIndex index)
Returns the widget for the item at the given index.

See also:
setIndexWidget().


itemDelegate

public final QAbstractItemDelegate itemDelegate()
Returns the item delegate used by this view and model. This is either one set with setItemDelegate(), or the default one.

See also:
setItemDelegate().


itemDelegate

public final QAbstractItemDelegate itemDelegate(com.trolltech.qt.core.QModelIndex index)
Returns the item delegate used by this view and model for the given index.


itemDelegateForColumn

public final QAbstractItemDelegate itemDelegateForColumn(int column)
Returns the item delegate used by this view and model for the given column. You can call itemDelegate() to get a pointer to the current delegate for a given index.

See also:
setItemDelegateForColumn(), itemDelegateForRow(), and itemDelegate().


itemDelegateForRow

public final QAbstractItemDelegate itemDelegateForRow(int row)
Returns the item delegate used by this view and model for the given row, or 0 if no delegate has been assigned. You can call itemDelegate() to get a pointer to the current delegate for a given index.

See also:
setItemDelegateForRow(), itemDelegateForColumn(), and setItemDelegate().


model

public final QAbstractItemModel model()
Returns the model that this view is presenting.

See also:
setModel().


openPersistentEditor

public final void openPersistentEditor(com.trolltech.qt.core.QModelIndex index)
Opens a persistent editor on the item at the given index. If no editor exists, the delegate will create a new editor.

See also:
closePersistentEditor().


rootIndex

public final com.trolltech.qt.core.QModelIndex rootIndex()
Returns the model index of the model's root item. The root item is the parent item to the view's toplevel items. The root can be invalid.

See also:
setRootIndex().


scheduleDelayedItemsLayout

protected final void scheduleDelayedItemsLayout()
Schedules a layout of the items in the view to be executed when the event processing starts.

Even if scheduleDelayedItemsLayout() is called multiple times before events are processed, the view will only do the layout once.

See also:
executeDelayedItemsLayout().


scrollDirtyRegion

protected final void scrollDirtyRegion(int dx,
                                       int dy)
Prepares the view for scrolling by (dx,dy) pixels by moving the dirty regions in the opposite direction. You only need to call this function if you are implementing a scrolling viewport in your view subclass.

If you implement scrollContentsBy() in a subclass of QAbstractItemView, call this function before you call QWidget::scroll() on the viewport. Alternatively, just call update().

See also:
scrollContentsBy(), dirtyRegionOffset(), and setDirtyRegion().


scrollToBottom

public final void scrollToBottom()
Scrolls the view to the bottom.

See also:
scrollTo(), and scrollToTop().


scrollToTop

public final void scrollToTop()
Scrolls the view to the top.

See also:
scrollTo(), and scrollToBottom().


selectionBehavior

public final QAbstractItemView.SelectionBehavior selectionBehavior()
This property holds which selection behavior the view uses. This property holds whether selections are done in terms of single items, rows or columns.

See also:
SelectionMode , and SelectionBehavior .


selectionMode

public final QAbstractItemView.SelectionMode selectionMode()
This property holds which selection mode the view operates in. This property controls whether the user can select one or many items and, in many-item selections, whether the selection must be a continuous range of items.

See also:
SelectionMode , and SelectionBehavior .


selectionModel

public final QItemSelectionModel selectionModel()
Returns the current selection model.

See also:
setSelectionModel(), and selectedIndexes().


setAlternatingRowColors

public final void setAlternatingRowColors(boolean enable)
This property holds whether to draw the background using alternating colors. If this property is true, the item background will be drawn using QPalette::Base and QPalette::AlternateBase ; otherwise the background will be drawn using the QPalette::Base color.

By default, this property is false.


setAutoScroll

public final void setAutoScroll(boolean enable)
This property holds whether autoscrolling in drag move events is enabled. If this property is set to true (the default), the QAbstractItemView automatically scrolls the contents of the view if the user drags within 16 pixels of the viewport edge. If the current item changes, then the view will scroll automatically to ensure that the current item is fully visible.

This property only works if the viewport accepts drops. Autoscroll is switched off by setting this property to false.


setAutoScrollMargin

public final void setAutoScrollMargin(int margin)
This property holds the size of the area when auto scrolling is triggered. This property controlls the size of the area at the edge of the viewport that triggers autoscrolling. The default value is 16 pixels.


setCurrentIndex

public final void setCurrentIndex(com.trolltech.qt.core.QModelIndex index)
Sets the current item to be the item at index. Depending on the current selection mode, the item may also be selected. Note that this function also updates the starting position for any new selections the user performs.

To set an item as the current item without selecting it, call

selectionModel()->setCurrentIndex(index, QItemSelectionModel::NoUpdate);

See also:
currentIndex(), currentChanged(), and selectionMode.


setDirtyRegion

protected final void setDirtyRegion(QRegion region)
Marks the given region as dirty and schedules it to be updated. You only need to call this function if you are implementing your own view subclass.

See also:
scrollDirtyRegion(), and dirtyRegionOffset().


setDragDropMode

public final void setDragDropMode(QAbstractItemView.DragDropMode behavior)
This property holds the drag and drop event the view will act upon.

See also:
showDropIndicator, and dragDropOverwriteMode.


setDragDropOverwriteMode

public final void setDragDropOverwriteMode(boolean overwrite)
This property holds the view's drag and drop behavior. If its value is true, the selected data will overwrite the existing item data when dropped, while moving the data will clear the item. If its value is false, the selected data will be inserted as a new item when the data is dropped. When the data is moved, the item is removed as well.

The default value is false, as in the QListView and QTreeView subclasses. In the QTableView subclass, on the other hand, the property has been set to true.

Note: This is not intended to prevent overwriting of items. The model's implementation of flags() should do that by not returning Qt::ItemIsDropEnabled .

See also:
dragDropMode.


setDragEnabled

public final void setDragEnabled(boolean enable)
This property holds whether the view supports dragging of its own items.

See also:
showDropIndicator, DragDropMode , dragDropOverwriteMode, and acceptDrops.


setDropIndicatorShown

public final void setDropIndicatorShown(boolean enable)
This property holds whether the drop indicator is shown when dragging items and dropping.

See also:
dragEnabled, DragDropMode , dragDropOverwriteMode, and acceptDrops.


setEditTriggers

public final void setEditTriggers(QAbstractItemView.EditTrigger[] triggers)
This is an overloaded method provided for convenience.


setEditTriggers

public final void setEditTriggers(QAbstractItemView.EditTriggers triggers)
This property holds which actions will initiate item editing. This property is a selection of flags defined by EditTrigger , combined using the OR operator. The view will only initiate the editing of an item if the action performed is set in this property.


setHorizontalScrollMode

public final void setHorizontalScrollMode(QAbstractItemView.ScrollMode mode)
This property holds how the view scrolls its contents in the horizontal direction. This property controlls how the view scroll its contents horizontally. Scrolling can be done either per pixel or per item.


setIconSize

public final void setIconSize(QSize size)
This property holds the size of items. Setting this property when the view is visible will cause the items to be laid out again.


setIndexWidget

public final void setIndexWidget(com.trolltech.qt.core.QModelIndex index,
                                 QWidget widget)
Sets the given widget on the item at the given index, passing the ownership of the widget to the viewport.

If index is invalid (e.g., if you pass the root index), this function will do nothing.

The given widget's autoFillBackground property must be set to true, otherwise the widget's background will be transparent, showing both the model data and the item at the given index.

If index widget A is replaced with index widget B, index widget A will be deleted. For example, in the code snippet below, the QLineEdit object will be deleted.

The following code example is written in c++.

setIndexWidget(index, new QLineEdit);
...
setIndexWidget(index, new QTextEdit);
This function should only be used to display static content within the visible area corresponding to an item of data. If you want to display custom dynamic content or implement a custom editor widget, subclass QItemDelegate instead.

See also:
indexWidget(), and Delegate Classes.


setItemDelegate

public final void setItemDelegate(QAbstractItemDelegate delegate)
Sets the item delegate for this view and its model to delegate. This is useful if you want complete control over the editing and display of items.

Any existing delegate will be removed, but not deleted. QAbstractItemView does not take ownership of delegate.

Warning: You should not share the same instance of a delegate between views. Doing so can cause incorrect or unintuitive editing behavior since each view connected to a given delegate may receive the closeEditor() signal, and attempt to access, modify or close an editor that has already been closed.

See also:
itemDelegate().


setItemDelegateForColumn

public final void setItemDelegateForColumn(int column,
                                           QAbstractItemDelegate delegate)
Sets the given item delegate used by this view and model for the given column. All items on column will be drawn and managed by delegate instead of using the default delegate (i.e., itemDelegate()).

Any existing column delegate for column will be removed, but not deleted. QAbstractItemView does not take ownership of delegate.

Note: If a delegate has been assigned to both a row and a column, the row delegate will take presedence and manage the intersecting cell index.

Warning: You should not share the same instance of a delegate between views. Doing so can cause incorrect or unintuitive editing behavior since each view connected to a given delegate may receive the closeEditor() signal, and attempt to access, modify or close an editor that has already been closed.

See also:
itemDelegateForColumn(), setItemDelegateForRow(), and itemDelegate().


setItemDelegateForRow

public final void setItemDelegateForRow(int row,
                                        QAbstractItemDelegate delegate)
Sets the given item delegate used by this view and model for the given row. All items on row will be drawn and managed by delegate instead of using the default delegate (i.e., itemDelegate()).

Any existing row delegate for row will be removed, but not deleted. QAbstractItemView does not take ownership of delegate.

Note: If a delegate has been assigned to both a row and a column, the row delegate (i.e., this delegate) will take presedence and manage the intersecting cell index.

Warning: You should not share the same instance of a delegate between views. Doing so can cause incorrect or unintuitive editing behavior since each view connected to a given delegate may receive the closeEditor() signal, and attempt to access, modify or close an editor that has already been closed.

See also:
itemDelegateForRow(), setItemDelegateForColumn(), and itemDelegate().


setSelectionBehavior

public final void setSelectionBehavior(QAbstractItemView.SelectionBehavior behavior)
This property holds which selection behavior the view uses. This property holds whether selections are done in terms of single items, rows or columns.

See also:
SelectionMode , and SelectionBehavior .


setSelectionMode

public final void setSelectionMode(QAbstractItemView.SelectionMode mode)
This property holds which selection mode the view operates in. This property controls whether the user can select one or many items and, in many-item selections, whether the selection must be a continuous range of items.

See also:
SelectionMode , and SelectionBehavior .


setState

protected final void setState(QAbstractItemView.State state)
Sets the item view's state to the given state.

See also:
state().


setTabKeyNavigation

public final void setTabKeyNavigation(boolean enable)
This property holds whether item navigation with tab and backtab is enabled.


setTextElideMode

public final void setTextElideMode(Qt.TextElideMode mode)
This property holds the the position of the ". ." in elided text.. The default value for all item views is Qt::ElideRight .


setVerticalScrollMode

public final void setVerticalScrollMode(QAbstractItemView.ScrollMode mode)
This property holds how the view scrolls its contents in the vertical direction. This property controlls how the view scroll its contents vertically. Scrolling can be done either per pixel or per item.


showDropIndicator

public final boolean showDropIndicator()
This property holds whether the drop indicator is shown when dragging items and dropping.

See also:
dragEnabled, DragDropMode , dragDropOverwriteMode, and acceptDrops.


sizeHintForIndex

public final QSize sizeHintForIndex(com.trolltech.qt.core.QModelIndex index)
Returns the size hint for the item with the specified index or an invalid size for invalid indexes.

See also:
sizeHintForRow(), and sizeHintForColumn().


state

protected final QAbstractItemView.State state()
Returns the item view's state.

See also:
setState().


tabKeyNavigation

public final boolean tabKeyNavigation()
This property holds whether item navigation with tab and backtab is enabled.


textElideMode

public final Qt.TextElideMode textElideMode()
This property holds the the position of the ". ." in elided text.. The default value for all item views is Qt::ElideRight .


update

public final void update(com.trolltech.qt.core.QModelIndex index)
Updates the area occupied by the given index.


verticalScrollMode

public final QAbstractItemView.ScrollMode verticalScrollMode()
This property holds how the view scrolls its contents in the vertical direction. This property controlls how the view scroll its contents vertically. Scrolling can be done either per pixel or per item.


closeEditor

protected void closeEditor(QWidget editor,
                           QAbstractItemDelegate.EndEditHint hint)
Closes the given editor, and releases it. The hint is used to specify how the view should respond to the end of the editing operation. For example, the hint may indicate that the next item in the view should be opened for editing.

See also:
edit(), and commitData().


commitData

protected void commitData(QWidget editor)
Commit the data in the editor to the model.

See also:
closeEditor().


currentChanged

protected void currentChanged(com.trolltech.qt.core.QModelIndex current,
                              com.trolltech.qt.core.QModelIndex previous)
This slot is called when a new item becomes the current item. The previous current item is specified by the previous index, and the new item by the current index.

If you want to know about changes to items see the dataChanged() signal.


dataChanged

protected void dataChanged(com.trolltech.qt.core.QModelIndex topLeft,
                           com.trolltech.qt.core.QModelIndex bottomRight)
This slot is called when items are changed in the model. The changed items are those from topLeft to bottomRight inclusive. If just one item is changed topLeft == bottomRight.


edit

protected boolean edit(com.trolltech.qt.core.QModelIndex index,
                       QAbstractItemView.EditTrigger trigger,
                       QEvent event)
Starts editing the item at index, creating an editor if necessary, and returns true if the view's State is now EditingState ; otherwise returns false.

The action that caused the editing process is described by trigger, and the associated event is specified by event.

Editing can be forced by specifying the trigger to be QAbstractItemView::AllEditTriggers .

See also:
closeEditor().


editorDestroyed

protected void editorDestroyed(QObject editor)
This function is called when the given editor has been destroyed.

See also:
closeEditor().


horizontalOffset

protected abstract int horizontalOffset()
Returns the horizontal offset of the view.

In the base class this is a pure virtual function.

See also:
verticalOffset().


indexAt

public abstract com.trolltech.qt.core.QModelIndex indexAt(QPoint point)
Returns the model index of the item at the viewport coordinates point.

In the base class this is a pure virtual function.

See also:
visualRect().


isIndexHidden

protected abstract boolean isIndexHidden(com.trolltech.qt.core.QModelIndex index)
Returns true if the item referred to by the given index is hidden in the view, otherwise returns false.

Hiding is a view specific feature. For example in TableView a column can be marked as hidden or a row in the TreeView.

In the base class this is a pure virtual function.


keyboardSearch

public void keyboardSearch(java.lang.String search)
Moves to and selects the item best matching the string search. If no item is found nothing happens.

In the default implementation, the search is reset if search is empty, or the time interval since the last search has exceeded QApplication::keyboardInputInterval().


moveCursor

protected abstract com.trolltech.qt.core.QModelIndex moveCursor(QAbstractItemView.CursorAction cursorAction,
                                                                Qt.KeyboardModifiers modifiers)
Returns a QModelIndex object pointing to the next object in the view, based on the given cursorAction and keyboard modifiers specified by modifiers.

In the base class this is a pure virtual function.


reset

public void reset()
Reset the internal state of the view.

Warning: This function will reset open editors, scroll bar positions, selections, etc. Existing changes will not be committed. If you would like to save your changes when resetting the view, you can reimplement this function, commit your changes, and then call the superclass' implementation.


rowsAboutToBeRemoved

protected void rowsAboutToBeRemoved(com.trolltech.qt.core.QModelIndex parent,
                                    int start,
                                    int end)
This slot is called when rows are about to be removed. The deleted rows are those under the given parent from start to end inclusive.

See also:
rowsInserted().


rowsInserted

protected void rowsInserted(com.trolltech.qt.core.QModelIndex parent,
                            int start,
                            int end)
This slot is called when rows are inserted. The new rows are those under the given parent from start to end inclusive. The base class implementation calls fetchMore() on the model to check for more data.

See also:
rowsAboutToBeRemoved().


scrollTo

public final void scrollTo(com.trolltech.qt.core.QModelIndex index)
Scrolls the view if necessary to ensure that the item at index is visible. The view will try to position the item according to the given hint.

In the base class this is a pure virtual function.


scrollTo

public abstract void scrollTo(com.trolltech.qt.core.QModelIndex index,
                              QAbstractItemView.ScrollHint hint)
Scrolls the view if necessary to ensure that the item at index is visible. The view will try to position the item according to the given hint.

In the base class this is a pure virtual function.


selectAll

public void selectAll()
Selects all item in the view. This function wil use the selection selection behavior set on the view when selecting.

See also:
setSelection(), selectedIndexes(), and clearSelection().


selectedIndexes

protected java.util.List selectedIndexes()
This convenience function returns a list of all selected and non-hidden item indexes in the view. The list contains no duplicates, and is not sorted.

See also:
QItemSelectionModel::selectedIndexes().


selectionChanged

protected void selectionChanged(QItemSelection selected,
                                QItemSelection deselected)
This slot is called when the selection is changed. The previous selection (which may be empty), is specified by deselected, and the new selection by selected.

See also:
setSelection().


selectionCommand

protected final QItemSelectionModel.SelectionFlags selectionCommand(com.trolltech.qt.core.QModelIndex index)
Returns the SelectionFlags to be used when updating a selection with to include the index specified. The event is a user input event, such as a mouse or keyboard event.

Reimplement this function to define your own selection behavior.

See also:
setSelection().


selectionCommand

protected QItemSelectionModel.SelectionFlags selectionCommand(com.trolltech.qt.core.QModelIndex index,
                                                              QEvent event)
Returns the SelectionFlags to be used when updating a selection with to include the index specified. The event is a user input event, such as a mouse or keyboard event.

Reimplement this function to define your own selection behavior.

See also:
setSelection().


setModel

public void setModel(QAbstractItemModel model)
Sets the model for the view to present.

This function will create and set a new selection model, replacing any model that was previously set with setSelectionModel(). However, the old selection model will not be deleted as it may be shared between several views. We recommend that you delete the old selection model if it is no longer required. This is done with the following code:

The following code example is written in c++.

QItemSelectionModel *m = view->selectionModel();
view->setModel(new model);
delete m;
If both the old model and the old selection model do not have parents, or if their parents are long-lived objects, it may be preferable to call their deleteLater() functions to explicitly delete them.

The view does not take ownership of the model unless it is the model's parent object because the view may be shared between many different views.

See also:
model(), selectionModel(), and setSelectionModel().


setRootIndex

public void setRootIndex(com.trolltech.qt.core.QModelIndex index)
Sets the root item to the item at the given index.

See also:
rootIndex().


setSelection

protected abstract void setSelection(QRect rect,
                                     QItemSelectionModel.SelectionFlags command)
Applies the selection flags to the items in or touched by the rectangle, rect.

When implementing your own itemview setSelection should call selectionModel()->select(selection, flags) where selection is either an empty QModelIndex or a QItemSelection that contains all items that are contained in rect.

See also:
selectionCommand(), and selectedIndexes().


setSelectionModel

public void setSelectionModel(QItemSelectionModel selectionModel)
Sets the current selection model to the given selectionModel.

Note that, if you call setModel() after this function, the given selectionModel will be replaced by one created by the view.

Note: It is up to the application to delete the old selection model if it is no longer needed; i.e., if it is not being used by other views. This will happen automatically when its parent object is deleted. However, if it does not have a parent, or if the parent is a long-lived object, it may be preferable to call its deleteLater() function to explicitly delete it.

See also:
selectionModel(), setModel(), and clearSelection().


sizeHintForColumn

public int sizeHintForColumn(int column)
Returns the width size hint for the specified column or -1 if there is no model.

This function is used in views with a horizontal header to find the size hint for a header section based on the contents of the given column.

See also:
sizeHintForRow().


sizeHintForRow

public int sizeHintForRow(int row)
Returns the height size hint for the specified row or -1 if there is no model.

The returned height is calculated using the size hints of the given row's items, i.e. the returned value is the maximum height among the items. Note that to control the height of a row, you must reimplement the QAbstractItemDelegate::sizeHint() function.

This function is used in views with a vertical header to find the size hint for a header section based on the contents of the given row.

See also:
sizeHintForColumn().


startDrag

protected final void startDrag(Qt.DropAction[] supportedActions)
This is an overloaded method provided for convenience.


startDrag

protected void startDrag(Qt.DropActions supportedActions)
Starts a drag by calling drag->exec() using the given supportedActions.


updateGeometries

protected void updateGeometries()
Updates the geometry of the child widgets of the view.


verticalOffset

protected abstract int verticalOffset()
Returns the vertical offset of the view.

In the base class this is a pure virtual function.

See also:
horizontalOffset().


viewOptions

protected QStyleOptionViewItem viewOptions()
Returns a QStyleOptionViewItem structure populated with the view's palette, font, state, alignments etc.


visualRect

public abstract QRect visualRect(com.trolltech.qt.core.QModelIndex index)
Returns the rectangle on the viewport occupied by the item at index.

If your item is displayed in several areas then visualRect should return the primary area that contains index and not the complete area that index might encompasses, touch or cause drawing.

In the base class this is a pure virtual function.

See also:
indexAt(), and visualRegionForSelection().


visualRegionForSelection

protected abstract QRegion visualRegionForSelection(QItemSelection selection)
Returns the region from the viewport of the items in the given selection.

In the base class this is a pure virtual function.

See also:
visualRect(), and selectedIndexes().