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Diffstat (limited to 'src/gui/itemviews/qabstractitemview.cpp')
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diff --git a/src/gui/itemviews/qabstractitemview.cpp b/src/gui/itemviews/qabstractitemview.cpp deleted file mode 100644 index 6aed17c049..0000000000 --- a/src/gui/itemviews/qabstractitemview.cpp +++ /dev/null @@ -1,4241 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtGui module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** This file may be used under the terms of the GNU Lesser General Public -** License version 2.1 as published by the Free Software Foundation and -** appearing in the file LICENSE.LGPL included in the packaging of this -** file. Please review the following information to ensure the GNU Lesser -** General Public License version 2.1 requirements will be met: -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 as published by the Free Software Foundation -** and appearing in the file LICENSE.GPL included in the packaging of this -** file. Please review the following information to ensure the GNU General -** Public License version 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qabstractitemview.h" - -#ifndef QT_NO_ITEMVIEWS -#include <qpointer.h> -#include <qapplication.h> -#include <qclipboard.h> -#include <qpainter.h> -#include <qstyle.h> -#include <qdrag.h> -#include <qevent.h> -#include <qscrollbar.h> -#include <qwhatsthis.h> -#include <qtooltip.h> -#include <qdatetime.h> -#include <qlineedit.h> -#include <qspinbox.h> -#include <qstyleditemdelegate.h> -#include <private/qabstractitemview_p.h> -#include <private/qabstractitemmodel_p.h> -#ifndef QT_NO_ACCESSIBILITY -#include <qaccessible.h> -#endif -#include <private/qsoftkeymanager_p.h> -#ifndef QT_NO_GESTURE -# include <qscroller.h> -#endif - -QT_BEGIN_NAMESPACE - -QAbstractItemViewPrivate::QAbstractItemViewPrivate() - : model(QAbstractItemModelPrivate::staticEmptyModel()), - itemDelegate(0), - selectionModel(0), - ctrlDragSelectionFlag(QItemSelectionModel::NoUpdate), - noSelectionOnMousePress(false), - selectionMode(QAbstractItemView::ExtendedSelection), - selectionBehavior(QAbstractItemView::SelectItems), - currentlyCommittingEditor(0), - pressedModifiers(Qt::NoModifier), - pressedPosition(QPoint(-1, -1)), - pressedAlreadySelected(false), - viewportEnteredNeeded(false), - state(QAbstractItemView::NoState), - stateBeforeAnimation(QAbstractItemView::NoState), - editTriggers(QAbstractItemView::DoubleClicked|QAbstractItemView::EditKeyPressed), - lastTrigger(QAbstractItemView::NoEditTriggers), - tabKeyNavigation(false), -#ifndef QT_NO_DRAGANDDROP - showDropIndicator(true), - dragEnabled(false), - dragDropMode(QAbstractItemView::NoDragDrop), - overwrite(false), - dropIndicatorPosition(QAbstractItemView::OnItem), - defaultDropAction(Qt::IgnoreAction), -#endif -#ifdef QT_SOFTKEYS_ENABLED - doneSoftKey(0), -#endif - autoScroll(true), - autoScrollMargin(16), - autoScrollCount(0), - shouldScrollToCurrentOnShow(false), - shouldClearStatusTip(false), - alternatingColors(false), - textElideMode(Qt::ElideRight), - verticalScrollMode(QAbstractItemView::ScrollPerItem), - horizontalScrollMode(QAbstractItemView::ScrollPerItem), - currentIndexSet(false), - wrapItemText(false), - delayedPendingLayout(true), - moveCursorUpdatedView(false) -{ - keyboardInputTime.invalidate(); -} - -QAbstractItemViewPrivate::~QAbstractItemViewPrivate() -{ -} - -void QAbstractItemViewPrivate::init() -{ - Q_Q(QAbstractItemView); - q->setItemDelegate(new QStyledItemDelegate(q)); - - vbar->setRange(0, 0); - hbar->setRange(0, 0); - - QObject::connect(vbar, SIGNAL(actionTriggered(int)), - q, SLOT(verticalScrollbarAction(int))); - QObject::connect(hbar, SIGNAL(actionTriggered(int)), - q, SLOT(horizontalScrollbarAction(int))); - QObject::connect(vbar, SIGNAL(valueChanged(int)), - q, SLOT(verticalScrollbarValueChanged(int))); - QObject::connect(hbar, SIGNAL(valueChanged(int)), - q, SLOT(horizontalScrollbarValueChanged(int))); - - viewport->setBackgroundRole(QPalette::Base); - - q->setAttribute(Qt::WA_InputMethodEnabled); - -#ifdef QT_SOFTKEYS_ENABLED - doneSoftKey = QSoftKeyManager::createKeyedAction(QSoftKeyManager::DoneSoftKey, Qt::Key_Back, q); -#endif -} - -void QAbstractItemViewPrivate::setHoverIndex(const QPersistentModelIndex &index) -{ - Q_Q(QAbstractItemView); - if (hover == index) - return; - - if (selectionBehavior != QAbstractItemView::SelectRows) { - q->update(hover); //update the old one - q->update(index); //update the new one - } else { - QRect oldHoverRect = q->visualRect(hover); - QRect newHoverRect = q->visualRect(index); - viewport->update(QRect(0, newHoverRect.y(), viewport->width(), newHoverRect.height())); - viewport->update(QRect(0, oldHoverRect.y(), viewport->width(), oldHoverRect.height())); - } - hover = index; -} - -void QAbstractItemViewPrivate::checkMouseMove(const QPersistentModelIndex &index) -{ - //we take a persistent model index because the model might change by emitting signals - Q_Q(QAbstractItemView); - setHoverIndex(index); - if (viewportEnteredNeeded || enteredIndex != index) { - viewportEnteredNeeded = false; - - if (index.isValid()) { - emit q->entered(index); -#ifndef QT_NO_STATUSTIP - QString statustip = model->data(index, Qt::StatusTipRole).toString(); - if (parent && (shouldClearStatusTip || !statustip.isEmpty())) { - QStatusTipEvent tip(statustip); - QApplication::sendEvent(parent, &tip); - shouldClearStatusTip = !statustip.isEmpty(); - } -#endif - } else { -#ifndef QT_NO_STATUSTIP - if (parent && shouldClearStatusTip) { - QString emptyString; - QStatusTipEvent tip( emptyString ); - QApplication::sendEvent(parent, &tip); - } -#endif - emit q->viewportEntered(); - } - enteredIndex = index; - } -} - -#ifndef QT_NO_GESTURES - -// stores and restores the selection and current item when flicking -void QAbstractItemViewPrivate::_q_scrollerStateChanged() -{ - Q_Q(QAbstractItemView); - - if (QScroller *scroller = QScroller::scroller(viewport)) { - switch (scroller->state()) { - case QScroller::Pressed: - // store the current selection in case we start scrolling - if (q->selectionModel()) { - oldSelection = q->selectionModel()->selection(); - oldCurrent = q->selectionModel()->currentIndex(); - } - break; - - case QScroller::Dragging: - // restore the old selection if we really start scrolling - if (q->selectionModel()) { - q->selectionModel()->select(oldSelection, QItemSelectionModel::ClearAndSelect); - q->selectionModel()->setCurrentIndex(oldCurrent, QItemSelectionModel::NoUpdate); - } - // fall through - - default: - oldSelection = QItemSelection(); - oldCurrent = QModelIndex(); - break; - } - } -} - -#endif // QT_NO_GESTURES - -/*! - \class QAbstractItemView - - \brief The QAbstractItemView class provides the basic functionality for - item view classes. - - \ingroup model-view - - - 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 keyboard navigation implements this - functionality: - - \table - \header - \o Keys - \o Functionality - \row - \o Arrow keys - \o Changes the current item and selects it. - \row - \o Ctrl+Arrow keys - \o Changes the current item but does not select it. - \row - \o Shift+Arrow keys - \o Changes the current item and selects it. The previously - selected item(s) is not deselected. - \row - \o Ctr+Space - \o Toggles selection of the current item. - \row - \o Tab/Backtab - \o Changes the current item to the next/previous item. - \row - \o Home/End - \o Selects the first/last item in the model. - \row - \o Page up/Page down - \o Scrolls the rows shown up/down by the number of - visible rows in the view. - \row - \o Ctrl+A - \o Selects all items in the model. - \endtable - - Note that the above table assumes that the - \l{selectionMode}{selection mode} allows the operations. For - instance, you cannot select items if the selection mode is - QAbstractItemView::NoSelection. - - The QAbstractItemView class is one of the \l{Model/View Classes} - and is part of Qt's \l{Model/View Programming}{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: - - \snippet doc/src/snippets/code/src_gui_itemviews_qabstractitemview.cpp 0 - - 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 - \l{QWidget::update()}{update()} as all painting operations take place on the - viewport. - - \sa {View Classes}, {Model/View Programming}, QAbstractItemModel, {Chart Example} -*/ - -/*! - \enum QAbstractItemView::SelectionMode - - This enum indicates how the view responds to user selections: - - \value SingleSelection When the user selects an item, any already-selected - item becomes unselected, and the user cannot unselect the selected item by - clicking on it. - - \value ContiguousSelection When the user selects an item in the usual way, - the selection is cleared and the new item selected. However, if the user - presses the Shift key while clicking on an item, all items between the - current item and the clicked item are selected or unselected, depending on - the state of the clicked item. - - \value ExtendedSelection When the user selects an item in the usual way, - the selection is cleared and the new item selected. However, if the user - presses the Ctrl key when clicking on an item, the clicked item gets - toggled and all other items are left untouched. If the user presses the - Shift key while clicking on an item, all items between the current item - and the clicked item are selected or unselected, depending on the state of - the clicked item. Multiple items can be selected by dragging the mouse over - them. - - \value MultiSelection When the user selects an item in the usual way, the - selection status of that item is toggled and the other items are left - alone. Multiple items can be toggled by dragging the mouse over them. - - \value NoSelection Items cannot be selected. - - The most commonly used modes are SingleSelection and ExtendedSelection. -*/ - -/*! - \enum QAbstractItemView::SelectionBehavior - - \value SelectItems Selecting single items. - \value SelectRows Selecting only rows. - \value SelectColumns Selecting only columns. -*/ - -/*! - \enum QAbstractItemView::ScrollHint - - \value EnsureVisible Scroll to ensure that the item is visible. - \value PositionAtTop Scroll to position the item at the top of the - viewport. - \value PositionAtBottom Scroll to position the item at the bottom of the - viewport. - \value PositionAtCenter Scroll to position the item at the center of the - viewport. -*/ - - -/*! - \enum QAbstractItemView::EditTrigger - - This enum describes actions which will initiate item editing. - - \value NoEditTriggers No editing possible. - \value CurrentChanged Editing start whenever current item changes. - \value DoubleClicked Editing starts when an item is double clicked. - \value SelectedClicked Editing starts when clicking on an already selected - item. - \value EditKeyPressed Editing starts when the platform edit key has been - pressed over an item. - \value AnyKeyPressed Editing starts when any key is pressed over an item. - \value AllEditTriggers Editing starts for all above actions. -*/ - -/*! - \enum QAbstractItemView::CursorAction - - This enum describes the different ways to navigate between items, - \sa moveCursor() - - \value MoveUp Move to the item above the current item. - \value MoveDown Move to the item below the current item. - \value MoveLeft Move to the item left of the current item. - \value MoveRight Move to the item right of the current item. - \value MoveHome Move to the top-left corner item. - \value MoveEnd Move to the bottom-right corner item. - \value MovePageUp Move one page up above the current item. - \value MovePageDown Move one page down below the current item. - \value MoveNext Move to the item after the current item. - \value MovePrevious Move to the item before the current item. -*/ - -/*! - \enum QAbstractItemView::State - - Describes the different states the view can be in. This is usually - only interesting when reimplementing your own view. - - \value NoState The is the default state. - \value DraggingState The user is dragging items. - \value DragSelectingState The user is selecting items. - \value EditingState The user is editing an item in a widget editor. - \value ExpandingState The user is opening a branch of items. - \value CollapsingState The user is closing a branch of items. - \value AnimatingState The item view is performing an animation. -*/ - -/*! - \since 4.2 - \enum QAbstractItemView::ScrollMode - - \value ScrollPerItem The view will scroll the contents one item at a time. - \value ScrollPerPixel The view will scroll the contents one pixel at a time. -*/ - -/*! - \fn QRect QAbstractItemView::visualRect(const QModelIndex &index) const = 0 - Returns the rectangle on the viewport occupied by the item at \a 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. - - \sa indexAt(), visualRegionForSelection() -*/ - -/*! - \fn void QAbstractItemView::scrollTo(const QModelIndex &index, ScrollHint hint) = 0 - - Scrolls the view if necessary to ensure that the item at \a index - is visible. The view will try to position the item according to the given \a hint. - - In the base class this is a pure virtual function. -*/ - -/*! - \fn QModelIndex QAbstractItemView::indexAt(const QPoint &point) const = 0 - - Returns the model index of the item at the viewport coordinates \a point. - - In the base class this is a pure virtual function. - - \sa visualRect() -*/ - -/*! - \fn void QAbstractItemView::activated(const QModelIndex &index) - - This signal is emitted when the item specified by \a 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. - - \sa clicked(), doubleClicked(), entered(), pressed() -*/ - -/*! - \fn void QAbstractItemView::entered(const QModelIndex &index) - - This signal is emitted when the mouse cursor enters the item - specified by \a index. - Mouse tracking needs to be enabled for this feature to work. - - \sa viewportEntered(), activated(), clicked(), doubleClicked(), pressed() -*/ - -/*! - \fn void QAbstractItemView::viewportEntered() - - This signal is emitted when the mouse cursor enters the viewport. - Mouse tracking needs to be enabled for this feature to work. - - \sa entered() -*/ - -/*! - \fn void QAbstractItemView::pressed(const QModelIndex &index) - - This signal is emitted when a mouse button is pressed. The item - the mouse was pressed on is specified by \a index. The signal is - only emitted when the index is valid. - - Use the QApplication::mouseButtons() function to get the state - of the mouse buttons. - - \sa activated(), clicked(), doubleClicked(), entered() -*/ - -/*! - \fn void QAbstractItemView::clicked(const QModelIndex &index) - - This signal is emitted when a mouse button is clicked. The item - the mouse was clicked on is specified by \a index. The signal is - only emitted when the index is valid. - - \sa activated(), doubleClicked(), entered(), pressed() -*/ - -/*! - \fn void QAbstractItemView::doubleClicked(const QModelIndex &index) - - This signal is emitted when a mouse button is double-clicked. The - item the mouse was double-clicked on is specified by \a index. - The signal is only emitted when the index is valid. - - \sa clicked(), activated() -*/ - -/*! - \fn QModelIndex QAbstractItemView::moveCursor(CursorAction cursorAction, Qt::KeyboardModifiers modifiers) = 0 - - Returns a QModelIndex object pointing to the next object in the view, - based on the given \a cursorAction and keyboard modifiers specified - by \a modifiers. - - In the base class this is a pure virtual function. -*/ - -/*! - \fn int QAbstractItemView::horizontalOffset() const = 0 - - Returns the horizontal offset of the view. - - In the base class this is a pure virtual function. - - \sa verticalOffset() -*/ - -/*! - \fn int QAbstractItemView::verticalOffset() const = 0 - - Returns the vertical offset of the view. - - In the base class this is a pure virtual function. - - \sa horizontalOffset() -*/ - -/*! - \fn bool QAbstractItemView::isIndexHidden(const QModelIndex &index) const - - Returns true if the item referred to by the given \a 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. -*/ - -/*! - \fn void QAbstractItemView::setSelection(const QRect &rect, QItemSelectionModel::SelectionFlags flags) - - Applies the selection \a flags to the items in or touched by the - rectangle, \a 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 \a rect. - - \sa selectionCommand(), selectedIndexes() -*/ - -/*! - \fn QRegion QAbstractItemView::visualRegionForSelection(const QItemSelection &selection) const = 0 - - Returns the region from the viewport of the items in the given - \a selection. - - In the base class this is a pure virtual function. - - \sa visualRect(), selectedIndexes() -*/ - -/*! - \fn void QAbstractItemView::update() - \internal -*/ - -/*! - Constructs an abstract item view with the given \a parent. -*/ -QAbstractItemView::QAbstractItemView(QWidget *parent) - : QAbstractScrollArea(*(new QAbstractItemViewPrivate), parent) -{ - d_func()->init(); -} - -/*! - \internal -*/ -QAbstractItemView::QAbstractItemView(QAbstractItemViewPrivate &dd, QWidget *parent) - : QAbstractScrollArea(dd, parent) -{ - d_func()->init(); -} - -/*! - Destroys the view. -*/ -QAbstractItemView::~QAbstractItemView() -{ - Q_D(QAbstractItemView); - // stop these timers here before ~QObject - d->delayedReset.stop(); - d->updateTimer.stop(); - d->delayedEditing.stop(); - d->delayedAutoScroll.stop(); - d->autoScrollTimer.stop(); - d->delayedLayout.stop(); - d->fetchMoreTimer.stop(); -} - -/*! - Sets the \a 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: - - \snippet doc/src/snippets/code/src_gui_itemviews_qabstractitemview.cpp 2 - - 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 \e{does not} take ownership of the model unless it is the model's - parent object because the model may be shared between many different views. - - \sa selectionModel(), setSelectionModel() -*/ -void QAbstractItemView::setModel(QAbstractItemModel *model) -{ - Q_D(QAbstractItemView); - if (model == d->model) - return; - if (d->model && d->model != QAbstractItemModelPrivate::staticEmptyModel()) { - disconnect(d->model, SIGNAL(destroyed()), - this, SLOT(_q_modelDestroyed())); - disconnect(d->model, SIGNAL(dataChanged(QModelIndex,QModelIndex)), - this, SLOT(dataChanged(QModelIndex,QModelIndex))); - disconnect(d->model, SIGNAL(headerDataChanged(Qt::Orientation,int,int)), - this, SLOT(_q_headerDataChanged())); - disconnect(d->model, SIGNAL(rowsInserted(QModelIndex,int,int)), - this, SLOT(rowsInserted(QModelIndex,int,int))); - disconnect(d->model, SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)), - this, SLOT(rowsAboutToBeRemoved(QModelIndex,int,int))); - disconnect(d->model, SIGNAL(rowsRemoved(QModelIndex,int,int)), - this, SLOT(_q_rowsRemoved(QModelIndex,int,int))); - disconnect(d->model, SIGNAL(columnsAboutToBeRemoved(QModelIndex,int,int)), - this, SLOT(_q_columnsAboutToBeRemoved(QModelIndex,int,int))); - disconnect(d->model, SIGNAL(columnsRemoved(QModelIndex,int,int)), - this, SLOT(_q_columnsRemoved(QModelIndex,int,int))); - disconnect(d->model, SIGNAL(columnsInserted(QModelIndex,int,int)), - this, SLOT(_q_columnsInserted(QModelIndex,int,int))); - - disconnect(d->model, SIGNAL(modelReset()), this, SLOT(reset())); - disconnect(d->model, SIGNAL(layoutChanged()), this, SLOT(_q_layoutChanged())); - } - d->model = (model ? model : QAbstractItemModelPrivate::staticEmptyModel()); - - // These asserts do basic sanity checking of the model - Q_ASSERT_X(d->model->index(0,0) == d->model->index(0,0), - "QAbstractItemView::setModel", - "A model should return the exact same index " - "(including its internal id/pointer) when asked for it twice in a row."); - Q_ASSERT_X(!d->model->index(0,0).parent().isValid(), - "QAbstractItemView::setModel", - "The parent of a top level index should be invalid"); - - if (d->model != QAbstractItemModelPrivate::staticEmptyModel()) { - connect(d->model, SIGNAL(destroyed()), - this, SLOT(_q_modelDestroyed())); - connect(d->model, SIGNAL(dataChanged(QModelIndex,QModelIndex)), - this, SLOT(dataChanged(QModelIndex,QModelIndex))); - connect(d->model, SIGNAL(headerDataChanged(Qt::Orientation,int,int)), - this, SLOT(_q_headerDataChanged())); - connect(d->model, SIGNAL(rowsInserted(QModelIndex,int,int)), - this, SLOT(rowsInserted(QModelIndex,int,int))); - connect(d->model, SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)), - this, SLOT(rowsAboutToBeRemoved(QModelIndex,int,int))); - connect(d->model, SIGNAL(rowsRemoved(QModelIndex,int,int)), - this, SLOT(_q_rowsRemoved(QModelIndex,int,int))); - connect(d->model, SIGNAL(columnsAboutToBeRemoved(QModelIndex,int,int)), - this, SLOT(_q_columnsAboutToBeRemoved(QModelIndex,int,int))); - connect(d->model, SIGNAL(columnsRemoved(QModelIndex,int,int)), - this, SLOT(_q_columnsRemoved(QModelIndex,int,int))); - connect(d->model, SIGNAL(columnsInserted(QModelIndex,int,int)), - this, SLOT(_q_columnsInserted(QModelIndex,int,int))); - - connect(d->model, SIGNAL(modelReset()), this, SLOT(reset())); - connect(d->model, SIGNAL(layoutChanged()), this, SLOT(_q_layoutChanged())); - } - - QItemSelectionModel *selection_model = new QItemSelectionModel(d->model, this); - connect(d->model, SIGNAL(destroyed()), selection_model, SLOT(deleteLater())); - setSelectionModel(selection_model); - - reset(); // kill editors, set new root and do layout -} - -/*! - Returns the model that this view is presenting. -*/ -QAbstractItemModel *QAbstractItemView::model() const -{ - Q_D(const QAbstractItemView); - return (d->model == QAbstractItemModelPrivate::staticEmptyModel() ? 0 : d->model); -} - -/*! - Sets the current selection model to the given \a selectionModel. - - Note that, if you call setModel() after this function, the given \a 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. - - \sa selectionModel(), setModel(), clearSelection() -*/ -void QAbstractItemView::setSelectionModel(QItemSelectionModel *selectionModel) -{ - // ### if the given model is null, we should use the original selection model - Q_ASSERT(selectionModel); - Q_D(QAbstractItemView); - - if (selectionModel->model() != d->model) { - qWarning("QAbstractItemView::setSelectionModel() failed: " - "Trying to set a selection model, which works on " - "a different model than the view."); - return; - } - - if (d->selectionModel) { - disconnect(d->selectionModel, SIGNAL(selectionChanged(QItemSelection,QItemSelection)), - this, SLOT(selectionChanged(QItemSelection,QItemSelection))); - disconnect(d->selectionModel, SIGNAL(currentChanged(QModelIndex,QModelIndex)), - this, SLOT(currentChanged(QModelIndex,QModelIndex))); - } - - d->selectionModel = selectionModel; - - if (d->selectionModel) { - connect(d->selectionModel, SIGNAL(selectionChanged(QItemSelection,QItemSelection)), - this, SLOT(selectionChanged(QItemSelection,QItemSelection))); - connect(d->selectionModel, SIGNAL(currentChanged(QModelIndex,QModelIndex)), - this, SLOT(currentChanged(QModelIndex,QModelIndex))); - } -} - -/*! - Returns the current selection model. - - \sa setSelectionModel(), selectedIndexes() -*/ -QItemSelectionModel* QAbstractItemView::selectionModel() const -{ - Q_D(const QAbstractItemView); - return d->selectionModel; -} - -/*! - Sets the item delegate for this view and its model to \a 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 \a 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 \l{QAbstractItemDelegate::}{closeEditor()} - signal, and attempt to access, modify or close an editor that has already been closed. - - \sa itemDelegate() -*/ -void QAbstractItemView::setItemDelegate(QAbstractItemDelegate *delegate) -{ - Q_D(QAbstractItemView); - if (delegate == d->itemDelegate) - return; - - if (d->itemDelegate) { - if (d->delegateRefCount(d->itemDelegate) == 1) { - disconnect(d->itemDelegate, SIGNAL(closeEditor(QWidget*,QAbstractItemDelegate::EndEditHint)), - this, SLOT(closeEditor(QWidget*,QAbstractItemDelegate::EndEditHint))); - disconnect(d->itemDelegate, SIGNAL(commitData(QWidget*)), this, SLOT(commitData(QWidget*))); - disconnect(d->itemDelegate, SIGNAL(sizeHintChanged(QModelIndex)), this, SLOT(doItemsLayout())); - } - } - - if (delegate) { - if (d->delegateRefCount(delegate) == 0) { - connect(delegate, SIGNAL(closeEditor(QWidget*,QAbstractItemDelegate::EndEditHint)), - this, SLOT(closeEditor(QWidget*,QAbstractItemDelegate::EndEditHint))); - connect(delegate, SIGNAL(commitData(QWidget*)), this, SLOT(commitData(QWidget*))); - qRegisterMetaType<QModelIndex>("QModelIndex"); - connect(delegate, SIGNAL(sizeHintChanged(QModelIndex)), this, SLOT(doItemsLayout()), Qt::QueuedConnection); - } - } - d->itemDelegate = delegate; - viewport()->update(); -} - -/*! - Returns the item delegate used by this view and model. This is - either one set with setItemDelegate(), or the default one. - - \sa setItemDelegate() -*/ -QAbstractItemDelegate *QAbstractItemView::itemDelegate() const -{ - return d_func()->itemDelegate; -} - -/*! - \reimp -*/ -QVariant QAbstractItemView::inputMethodQuery(Qt::InputMethodQuery query) const -{ - const QModelIndex current = currentIndex(); - if (!current.isValid() || query != Qt::ImMicroFocus) - return QAbstractScrollArea::inputMethodQuery(query); - return visualRect(current); -} - -/*! - \since 4.2 - - Sets the given item \a delegate used by this view and model for the given - \a row. All items on \a row will be drawn and managed by \a delegate - instead of using the default delegate (i.e., itemDelegate()). - - Any existing row delegate for \a row will be removed, but not - deleted. QAbstractItemView does not take ownership of \a delegate. - - \note If a delegate has been assigned to both a row and a column, the row - delegate (i.e., this delegate) will take precedence 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 \l{QAbstractItemDelegate::}{closeEditor()} - signal, and attempt to access, modify or close an editor that has already been closed. - - \sa itemDelegateForRow(), setItemDelegateForColumn(), itemDelegate() -*/ -void QAbstractItemView::setItemDelegateForRow(int row, QAbstractItemDelegate *delegate) -{ - Q_D(QAbstractItemView); - if (QAbstractItemDelegate *rowDelegate = d->rowDelegates.value(row, 0)) { - if (d->delegateRefCount(rowDelegate) == 1) { - disconnect(rowDelegate, SIGNAL(closeEditor(QWidget*,QAbstractItemDelegate::EndEditHint)), - this, SLOT(closeEditor(QWidget*,QAbstractItemDelegate::EndEditHint))); - disconnect(rowDelegate, SIGNAL(commitData(QWidget*)), this, SLOT(commitData(QWidget*))); - } - d->rowDelegates.remove(row); - } - if (delegate) { - if (d->delegateRefCount(delegate) == 0) { - connect(delegate, SIGNAL(closeEditor(QWidget*,QAbstractItemDelegate::EndEditHint)), - this, SLOT(closeEditor(QWidget*,QAbstractItemDelegate::EndEditHint))); - connect(delegate, SIGNAL(commitData(QWidget*)), this, SLOT(commitData(QWidget*))); - } - d->rowDelegates.insert(row, delegate); - } - viewport()->update(); -} - -/*! - \since 4.2 - - Returns the item delegate used by this view and model for the given \a 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. - - \sa setItemDelegateForRow(), itemDelegateForColumn(), setItemDelegate() -*/ -QAbstractItemDelegate *QAbstractItemView::itemDelegateForRow(int row) const -{ - Q_D(const QAbstractItemView); - return d->rowDelegates.value(row, 0); -} - -/*! - \since 4.2 - - Sets the given item \a delegate used by this view and model for the given - \a column. All items on \a column will be drawn and managed by \a delegate - instead of using the default delegate (i.e., itemDelegate()). - - Any existing column delegate for \a column will be removed, but not - deleted. QAbstractItemView does not take ownership of \a delegate. - - \note If a delegate has been assigned to both a row and a column, the row - delegate will take precedence 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 \l{QAbstractItemDelegate::}{closeEditor()} - signal, and attempt to access, modify or close an editor that has already been closed. - - \sa itemDelegateForColumn(), setItemDelegateForRow(), itemDelegate() -*/ -void QAbstractItemView::setItemDelegateForColumn(int column, QAbstractItemDelegate *delegate) -{ - Q_D(QAbstractItemView); - if (QAbstractItemDelegate *columnDelegate = d->columnDelegates.value(column, 0)) { - if (d->delegateRefCount(columnDelegate) == 1) { - disconnect(columnDelegate, SIGNAL(closeEditor(QWidget*,QAbstractItemDelegate::EndEditHint)), - this, SLOT(closeEditor(QWidget*,QAbstractItemDelegate::EndEditHint))); - disconnect(columnDelegate, SIGNAL(commitData(QWidget*)), this, SLOT(commitData(QWidget*))); - } - d->columnDelegates.remove(column); - } - if (delegate) { - if (d->delegateRefCount(delegate) == 0) { - connect(delegate, SIGNAL(closeEditor(QWidget*,QAbstractItemDelegate::EndEditHint)), - this, SLOT(closeEditor(QWidget*,QAbstractItemDelegate::EndEditHint))); - connect(delegate, SIGNAL(commitData(QWidget*)), this, SLOT(commitData(QWidget*))); - } - d->columnDelegates.insert(column, delegate); - } - viewport()->update(); -} - -/*! - \since 4.2 - - Returns the item delegate used by this view and model for the given \a - column. You can call itemDelegate() to get a pointer to the current delegate - for a given index. - - \sa setItemDelegateForColumn(), itemDelegateForRow(), itemDelegate() -*/ -QAbstractItemDelegate *QAbstractItemView::itemDelegateForColumn(int column) const -{ - Q_D(const QAbstractItemView); - return d->columnDelegates.value(column, 0); -} - -/*! - Returns the item delegate used by this view and model for - the given \a index. -*/ -QAbstractItemDelegate *QAbstractItemView::itemDelegate(const QModelIndex &index) const -{ - Q_D(const QAbstractItemView); - return d->delegateForIndex(index); -} - -/*! - \property QAbstractItemView::selectionMode - \brief 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. - - \sa SelectionMode SelectionBehavior -*/ -void QAbstractItemView::setSelectionMode(SelectionMode mode) -{ - Q_D(QAbstractItemView); - d->selectionMode = mode; -} - -QAbstractItemView::SelectionMode QAbstractItemView::selectionMode() const -{ - Q_D(const QAbstractItemView); - return d->selectionMode; -} - -/*! - \property QAbstractItemView::selectionBehavior - \brief which selection behavior the view uses - - This property holds whether selections are done - in terms of single items, rows or columns. - - \sa SelectionMode SelectionBehavior -*/ - -void QAbstractItemView::setSelectionBehavior(QAbstractItemView::SelectionBehavior behavior) -{ - Q_D(QAbstractItemView); - d->selectionBehavior = behavior; -} - -QAbstractItemView::SelectionBehavior QAbstractItemView::selectionBehavior() const -{ - Q_D(const QAbstractItemView); - return d->selectionBehavior; -} - -/*! - Sets the current item to be the item at \a index. - - Unless the current selection mode is - \l{QAbstractItemView::}{NoSelection}, the item is 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 - - \c{selectionModel()->setCurrentIndex(index, QItemSelectionModel::NoUpdate);} - - \sa currentIndex(), currentChanged(), selectionMode -*/ -void QAbstractItemView::setCurrentIndex(const QModelIndex &index) -{ - Q_D(QAbstractItemView); - if (d->selectionModel && (!index.isValid() || d->isIndexEnabled(index))) { - QItemSelectionModel::SelectionFlags command = selectionCommand(index, 0); - d->selectionModel->setCurrentIndex(index, command); - d->currentIndexSet = true; - if ((command & QItemSelectionModel::Current) == 0) - d->pressedPosition = visualRect(currentIndex()).center() + d->offset(); - } -} - -/*! - Returns the model index of the current item. - - \sa setCurrentIndex() -*/ -QModelIndex QAbstractItemView::currentIndex() const -{ - Q_D(const QAbstractItemView); - return d->selectionModel ? d->selectionModel->currentIndex() : QModelIndex(); -} - - -/*! - 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. -*/ -void QAbstractItemView::reset() -{ - Q_D(QAbstractItemView); - d->delayedReset.stop(); //make sure we stop the timer - foreach (const QEditorInfo &info, d->indexEditorHash) { - if (info.widget) - d->releaseEditor(info.widget.data()); - } - d->editorIndexHash.clear(); - d->indexEditorHash.clear(); - d->persistent.clear(); - d->currentIndexSet = false; - setState(NoState); - setRootIndex(QModelIndex()); - if (d->selectionModel) - d->selectionModel->reset(); -} - -/*! - Sets the root item to the item at the given \a index. - - \sa rootIndex() -*/ -void QAbstractItemView::setRootIndex(const QModelIndex &index) -{ - Q_D(QAbstractItemView); - if (index.isValid() && index.model() != d->model) { - qWarning("QAbstractItemView::setRootIndex failed : index must be from the currently set model"); - return; - } - d->root = index; - d->doDelayedItemsLayout(); -} - -/*! - 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. - - \sa setRootIndex() -*/ -QModelIndex QAbstractItemView::rootIndex() const -{ - return QModelIndex(d_func()->root); -} - -/*! - Selects all items in the view. - This function will use the selection behavior - set on the view when selecting. - - \sa setSelection(), selectedIndexes(), clearSelection() -*/ -void QAbstractItemView::selectAll() -{ - Q_D(QAbstractItemView); - SelectionMode mode = d->selectionMode; - if (mode == MultiSelection || mode == ExtendedSelection) - d->selectAll(QItemSelectionModel::ClearAndSelect - |d->selectionBehaviorFlags()); - else if (mode != SingleSelection) - d->selectAll(selectionCommand(d->model->index(0, 0, d->root))); -} - -/*! - Starts editing the item corresponding to the given \a 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. - - \sa QModelIndex::flags() -*/ -void QAbstractItemView::edit(const QModelIndex &index) -{ - Q_D(QAbstractItemView); - if (!d->isIndexValid(index)) - qWarning("edit: index was invalid"); - if (!edit(index, AllEditTriggers, 0)) - qWarning("edit: editing failed"); -} - -/*! - Deselects all selected items. The current index will not be changed. - - \sa setSelection(), selectAll() -*/ -void QAbstractItemView::clearSelection() -{ - Q_D(QAbstractItemView); - if (d->selectionModel) - d->selectionModel->clearSelection(); -} - -/*! - \internal - - This function is intended to lay out the items in the view. - The default implementation just calls updateGeometries() and updates the viewport. -*/ -void QAbstractItemView::doItemsLayout() -{ - Q_D(QAbstractItemView); - d->interruptDelayedItemsLayout(); - updateGeometries(); - d->viewport->update(); -} - -/*! - \property QAbstractItemView::editTriggers - \brief which actions will initiate item editing - - This property is a selection of flags defined by - \l{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. -*/ -void QAbstractItemView::setEditTriggers(EditTriggers actions) -{ - Q_D(QAbstractItemView); - d->editTriggers = actions; -} - -QAbstractItemView::EditTriggers QAbstractItemView::editTriggers() const -{ - Q_D(const QAbstractItemView); - return d->editTriggers; -} - -/*! - \since 4.2 - \property QAbstractItemView::verticalScrollMode - \brief how the view scrolls its contents in the vertical direction - - This property controls how the view scroll its contents vertically. - Scrolling can be done either per pixel or per item. -*/ - -void QAbstractItemView::setVerticalScrollMode(ScrollMode mode) -{ - Q_D(QAbstractItemView); - if (mode == d->verticalScrollMode) - return; - QModelIndex topLeft = indexAt(QPoint(0, 0)); - d->verticalScrollMode = mode; - updateGeometries(); // update the scroll bars - scrollTo(topLeft, QAbstractItemView::PositionAtTop); -} - -QAbstractItemView::ScrollMode QAbstractItemView::verticalScrollMode() const -{ - Q_D(const QAbstractItemView); - return d->verticalScrollMode; -} - -/*! - \since 4.2 - \property QAbstractItemView::horizontalScrollMode - \brief how the view scrolls its contents in the horizontal direction - - This property controls how the view scroll its contents horizontally. - Scrolling can be done either per pixel or per item. -*/ - -void QAbstractItemView::setHorizontalScrollMode(ScrollMode mode) -{ - Q_D(QAbstractItemView); - d->horizontalScrollMode = mode; - updateGeometries(); // update the scroll bars -} - -QAbstractItemView::ScrollMode QAbstractItemView::horizontalScrollMode() const -{ - Q_D(const QAbstractItemView); - return d->horizontalScrollMode; -} - -#ifndef QT_NO_DRAGANDDROP -/*! - \since 4.2 - \property QAbstractItemView::dragDropOverwriteMode - \brief the view's drag and drop behavior - - If its value is \c true, the selected data will overwrite the - existing item data when dropped, while moving the data will clear - the item. If its value is \c 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 \c false, as in the QListView and QTreeView - subclasses. In the QTableView subclass, on the other hand, the - property has been set to \c 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. - - \sa dragDropMode -*/ -void QAbstractItemView::setDragDropOverwriteMode(bool overwrite) -{ - Q_D(QAbstractItemView); - d->overwrite = overwrite; -} - -bool QAbstractItemView::dragDropOverwriteMode() const -{ - Q_D(const QAbstractItemView); - return d->overwrite; -} -#endif - -/*! - \property QAbstractItemView::autoScroll - \brief 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. -*/ - -void QAbstractItemView::setAutoScroll(bool enable) -{ - Q_D(QAbstractItemView); - d->autoScroll = enable; -} - -bool QAbstractItemView::hasAutoScroll() const -{ - Q_D(const QAbstractItemView); - return d->autoScroll; -} - -/*! - \since 4.4 - \property QAbstractItemView::autoScrollMargin - \brief the size of the area when auto scrolling is triggered - - This property controls the size of the area at the edge of the viewport that - triggers autoscrolling. The default value is 16 pixels. -*/ -void QAbstractItemView::setAutoScrollMargin(int margin) -{ - Q_D(QAbstractItemView); - d->autoScrollMargin = margin; -} - -int QAbstractItemView::autoScrollMargin() const -{ - Q_D(const QAbstractItemView); - return d->autoScrollMargin; -} - -/*! - \property QAbstractItemView::tabKeyNavigation - \brief whether item navigation with tab and backtab is enabled. -*/ - -void QAbstractItemView::setTabKeyNavigation(bool enable) -{ - Q_D(QAbstractItemView); - d->tabKeyNavigation = enable; -} - -bool QAbstractItemView::tabKeyNavigation() const -{ - Q_D(const QAbstractItemView); - return d->tabKeyNavigation; -} - -#ifndef QT_NO_DRAGANDDROP -/*! - \property QAbstractItemView::showDropIndicator - \brief whether the drop indicator is shown when dragging items and dropping. - - \sa dragEnabled DragDropMode dragDropOverwriteMode acceptDrops -*/ - -void QAbstractItemView::setDropIndicatorShown(bool enable) -{ - Q_D(QAbstractItemView); - d->showDropIndicator = enable; -} - -bool QAbstractItemView::showDropIndicator() const -{ - Q_D(const QAbstractItemView); - return d->showDropIndicator; -} - -/*! - \property QAbstractItemView::dragEnabled - \brief whether the view supports dragging of its own items - - \sa showDropIndicator DragDropMode dragDropOverwriteMode acceptDrops -*/ - -void QAbstractItemView::setDragEnabled(bool enable) -{ - Q_D(QAbstractItemView); - d->dragEnabled = enable; -} - -bool QAbstractItemView::dragEnabled() const -{ - Q_D(const QAbstractItemView); - return d->dragEnabled; -} - -/*! - \since 4.2 - \enum QAbstractItemView::DragDropMode - - Describes the various drag and drop events the view can act upon. - By default the view does not support dragging or dropping (\c - NoDragDrop). - - \value NoDragDrop Does not support dragging or dropping. - \value DragOnly The view supports dragging of its own items - \value DropOnly The view accepts drops - \value DragDrop The view supports both dragging and dropping - \value InternalMove The view accepts move (\bold{not copy}) operations only - from itself. - - Note that the model used needs to provide support for drag and drop operations. - - \sa setDragDropMode() {Using drag and drop with item views} -*/ - -/*! - \property QAbstractItemView::dragDropMode - \brief the drag and drop event the view will act upon - - \since 4.2 - \sa showDropIndicator dragDropOverwriteMode -*/ -void QAbstractItemView::setDragDropMode(DragDropMode behavior) -{ - Q_D(QAbstractItemView); - d->dragDropMode = behavior; - setDragEnabled(behavior == DragOnly || behavior == DragDrop || behavior == InternalMove); - setAcceptDrops(behavior == DropOnly || behavior == DragDrop || behavior == InternalMove); -} - -QAbstractItemView::DragDropMode QAbstractItemView::dragDropMode() const -{ - Q_D(const QAbstractItemView); - DragDropMode setBehavior = d->dragDropMode; - if (!dragEnabled() && !acceptDrops()) - return NoDragDrop; - - if (dragEnabled() && !acceptDrops()) - return DragOnly; - - if (!dragEnabled() && acceptDrops()) - return DropOnly; - - if (dragEnabled() && acceptDrops()) { - if (setBehavior == InternalMove) - return setBehavior; - else - return DragDrop; - } - - return NoDragDrop; -} - -/*! - \property QAbstractItemView::defaultDropAction - \brief the drop action that will be used by default in QAbstractItemView::drag() - - If the property is not set, the drop action is CopyAction when the supported - actions support CopyAction. - - \since 4.6 - \sa showDropIndicator dragDropOverwriteMode -*/ -void QAbstractItemView::setDefaultDropAction(Qt::DropAction dropAction) -{ - Q_D(QAbstractItemView); - d->defaultDropAction = dropAction; -} - -Qt::DropAction QAbstractItemView::defaultDropAction() const -{ - Q_D(const QAbstractItemView); - return d->defaultDropAction; -} - -#endif // QT_NO_DRAGANDDROP - -/*! - \property QAbstractItemView::alternatingRowColors - \brief 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. -*/ -void QAbstractItemView::setAlternatingRowColors(bool enable) -{ - Q_D(QAbstractItemView); - d->alternatingColors = enable; - if (isVisible()) - d->viewport->update(); -} - -bool QAbstractItemView::alternatingRowColors() const -{ - Q_D(const QAbstractItemView); - return d->alternatingColors; -} - -/*! - \property QAbstractItemView::iconSize - \brief the size of items' icons - - Setting this property when the view is visible will cause the - items to be laid out again. -*/ -void QAbstractItemView::setIconSize(const QSize &size) -{ - Q_D(QAbstractItemView); - if (size == d->iconSize) - return; - d->iconSize = size; - d->doDelayedItemsLayout(); -} - -QSize QAbstractItemView::iconSize() const -{ - Q_D(const QAbstractItemView); - return d->iconSize; -} - -/*! - \property QAbstractItemView::textElideMode - - \brief the position of the "..." in elided text. - - The default value for all item views is Qt::ElideRight. -*/ -void QAbstractItemView::setTextElideMode(Qt::TextElideMode mode) -{ - Q_D(QAbstractItemView); - d->textElideMode = mode; -} - -Qt::TextElideMode QAbstractItemView::textElideMode() const -{ - return d_func()->textElideMode; -} - -/*! - \reimp -*/ -bool QAbstractItemView::focusNextPrevChild(bool next) -{ - Q_D(QAbstractItemView); - if (d->tabKeyNavigation && isEnabled() && d->viewport->isEnabled()) { - QKeyEvent event(QEvent::KeyPress, next ? Qt::Key_Tab : Qt::Key_Backtab, Qt::NoModifier); - keyPressEvent(&event); - if (event.isAccepted()) - return true; - } - return QAbstractScrollArea::focusNextPrevChild(next); -} - -/*! - \reimp -*/ -bool QAbstractItemView::event(QEvent *event) -{ - Q_D(QAbstractItemView); - switch (event->type()) { - case QEvent::Paint: - //we call this here because the scrollbars' visibility might be altered - //so this can't be done in the paintEvent method - d->executePostedLayout(); //make sure we set the layout properly - break; - case QEvent::Show: - d->executePostedLayout(); //make sure we set the layout properly - if (d->shouldScrollToCurrentOnShow) { - d->shouldScrollToCurrentOnShow = false; - const QModelIndex current = currentIndex(); - if (current.isValid() && (d->state == QAbstractItemView::EditingState || d->autoScroll)) - scrollTo(current); - } - break; - case QEvent::LocaleChange: - viewport()->update(); - break; - case QEvent::LayoutDirectionChange: - case QEvent::ApplicationLayoutDirectionChange: - updateGeometries(); - break; - case QEvent::StyleChange: - doItemsLayout(); - break; - case QEvent::FocusOut: - d->checkPersistentEditorFocus(); - break; - case QEvent::FontChange: - d->doDelayedItemsLayout(); // the size of the items will change - break; -#ifdef QT_SOFTKEYS_ENABLED - case QEvent::LanguageChange: - d->doneSoftKey->setText(QSoftKeyManager::standardSoftKeyText(QSoftKeyManager::DoneSoftKey)); - break; -#endif - default: - break; - } - return QAbstractScrollArea::event(event); -} - -/*! - \fn bool QAbstractItemView::viewportEvent(QEvent *event) - - This function is used to handle tool tips, and What's - This? mode, if the given \a event is a QEvent::ToolTip,or a - QEvent::WhatsThis. It passes all other - events on to its base class viewportEvent() handler. -*/ -bool QAbstractItemView::viewportEvent(QEvent *event) -{ - Q_D(QAbstractItemView); - switch (event->type()) { - case QEvent::HoverMove: - case QEvent::HoverEnter: - d->setHoverIndex(indexAt(static_cast<QHoverEvent*>(event)->pos())); - break; - case QEvent::HoverLeave: - d->setHoverIndex(QModelIndex()); - break; - case QEvent::Enter: - d->viewportEnteredNeeded = true; - break; - case QEvent::Leave: - #ifndef QT_NO_STATUSTIP - if (d->shouldClearStatusTip && d->parent) { - QString empty; - QStatusTipEvent tip(empty); - QApplication::sendEvent(d->parent, &tip); - d->shouldClearStatusTip = false; - } - #endif - d->enteredIndex = QModelIndex(); - break; - case QEvent::ToolTip: - case QEvent::QueryWhatsThis: - case QEvent::WhatsThis: { - QHelpEvent *he = static_cast<QHelpEvent*>(event); - const QModelIndex index = indexAt(he->pos()); - QStyleOptionViewItemV4 option = d->viewOptionsV4(); - option.rect = visualRect(index); - option.state |= (index == currentIndex() ? QStyle::State_HasFocus : QStyle::State_None); - bool retval = false; - // ### Qt 5: make this a normal function call to a virtual function - QMetaObject::invokeMethod(d->delegateForIndex(index), "helpEvent", - Q_RETURN_ARG(bool, retval), - Q_ARG(QHelpEvent *, he), - Q_ARG(QAbstractItemView *, this), - Q_ARG(QStyleOptionViewItem, option), - Q_ARG(QModelIndex, index)); - return retval; - } - case QEvent::FontChange: - d->doDelayedItemsLayout(); // the size of the items will change - break; - case QEvent::WindowActivate: - case QEvent::WindowDeactivate: - d->viewport->update(); - break; - case QEvent::ScrollPrepare: - executeDelayedItemsLayout(); -#ifndef QT_NO_GESTURES - connect(QScroller::scroller(d->viewport), SIGNAL(stateChanged(QScroller::State)), this, SLOT(_q_scrollerStateChanged()), Qt::UniqueConnection); -#endif - break; - - default: - break; - } - return QAbstractScrollArea::viewportEvent(event); -} - -/*! - This function is called with the given \a event when a mouse button is pressed - while the cursor is inside the widget. If a valid item is pressed on it is made - into the current item. This function emits the pressed() signal. -*/ -void QAbstractItemView::mousePressEvent(QMouseEvent *event) -{ - Q_D(QAbstractItemView); - d->delayedAutoScroll.stop(); //any interaction with the view cancel the auto scrolling - QPoint pos = event->pos(); - QPersistentModelIndex index = indexAt(pos); - - if (!d->selectionModel - || (d->state == EditingState && d->hasEditor(index))) - return; - - d->pressedAlreadySelected = d->selectionModel->isSelected(index); - d->pressedIndex = index; - d->pressedModifiers = event->modifiers(); - QItemSelectionModel::SelectionFlags command = selectionCommand(index, event); - d->noSelectionOnMousePress = command == QItemSelectionModel::NoUpdate || !index.isValid(); - QPoint offset = d->offset(); - if ((command & QItemSelectionModel::Current) == 0) - d->pressedPosition = pos + offset; - else if (!indexAt(d->pressedPosition - offset).isValid()) - d->pressedPosition = visualRect(currentIndex()).center() + offset; - - if (edit(index, NoEditTriggers, event)) - return; - - if (index.isValid() && d->isIndexEnabled(index)) { - // we disable scrollTo for mouse press so the item doesn't change position - // when the user is interacting with it (ie. clicking on it) - bool autoScroll = d->autoScroll; - d->autoScroll = false; - d->selectionModel->setCurrentIndex(index, QItemSelectionModel::NoUpdate); - d->autoScroll = autoScroll; - QRect rect(d->pressedPosition - offset, pos); - if (command.testFlag(QItemSelectionModel::Toggle)) { - command &= ~QItemSelectionModel::Toggle; - d->ctrlDragSelectionFlag = d->selectionModel->isSelected(index) ? QItemSelectionModel::Deselect : QItemSelectionModel::Select; - command |= d->ctrlDragSelectionFlag; - } - setSelection(rect, command); - - // signal handlers may change the model - emit pressed(index); - if (d->autoScroll) { - //we delay the autoscrolling to filter out double click event - //100 is to be sure that there won't be a double-click misinterpreted as a 2 single clicks - d->delayedAutoScroll.start(QApplication::doubleClickInterval()+100, this); - } - - } else { - // Forces a finalize() even if mouse is pressed, but not on a item - d->selectionModel->select(QModelIndex(), QItemSelectionModel::Select); - } -} - -/*! - This function is called with the given \a event when a mouse move event is - sent to the widget. If a selection is in progress and new items are moved - over the selection is extended; if a drag is in progress it is continued. -*/ -void QAbstractItemView::mouseMoveEvent(QMouseEvent *event) -{ - Q_D(QAbstractItemView); - QPoint topLeft; - QPoint bottomRight = event->pos(); - - if (state() == ExpandingState || state() == CollapsingState) - return; - -#ifndef QT_NO_DRAGANDDROP - if (state() == DraggingState) { - topLeft = d->pressedPosition - d->offset(); - if ((topLeft - bottomRight).manhattanLength() > QApplication::startDragDistance()) { - d->pressedIndex = QModelIndex(); - startDrag(d->model->supportedDragActions()); - setState(NoState); // the startDrag will return when the dnd operation is done - stopAutoScroll(); - } - return; - } -#endif // QT_NO_DRAGANDDROP - - QPersistentModelIndex index = indexAt(bottomRight); - QModelIndex buddy = d->model->buddy(d->pressedIndex); - if ((state() == EditingState && d->hasEditor(buddy)) - || edit(index, NoEditTriggers, event)) - return; - - if (d->selectionMode != SingleSelection) - topLeft = d->pressedPosition - d->offset(); - else - topLeft = bottomRight; - - d->checkMouseMove(index); - -#ifndef QT_NO_DRAGANDDROP - if (d->pressedIndex.isValid() - && d->dragEnabled - && (state() != DragSelectingState) - && (event->buttons() != Qt::NoButton) - && !d->selectedDraggableIndexes().isEmpty()) { - setState(DraggingState); - return; - } -#endif - - if ((event->buttons() & Qt::LeftButton) && d->selectionAllowed(index) && d->selectionModel) { - setState(DragSelectingState); - QItemSelectionModel::SelectionFlags command = selectionCommand(index, event); - if (d->ctrlDragSelectionFlag != QItemSelectionModel::NoUpdate && command.testFlag(QItemSelectionModel::Toggle)) { - command &= ~QItemSelectionModel::Toggle; - command |= d->ctrlDragSelectionFlag; - } - - // Do the normalize ourselves, since QRect::normalized() is flawed - QRect selectionRect = QRect(topLeft, bottomRight); - setSelection(selectionRect, command); - - // set at the end because it might scroll the view - if (index.isValid() - && (index != d->selectionModel->currentIndex()) - && d->isIndexEnabled(index)) - d->selectionModel->setCurrentIndex(index, QItemSelectionModel::NoUpdate); - } -} - -/*! - This function is called with the given \a event when a mouse button is released, - after a mouse press event on the widget. If a user presses the mouse inside your - widget and then drags the mouse to another location before releasing the mouse button, - your widget receives the release event. The function will emit the clicked() signal if an - item was being pressed. -*/ -void QAbstractItemView::mouseReleaseEvent(QMouseEvent *event) -{ - Q_D(QAbstractItemView); - - QPoint pos = event->pos(); - QPersistentModelIndex index = indexAt(pos); - - if (state() == EditingState) { - if (d->isIndexValid(index) - && d->isIndexEnabled(index) - && d->sendDelegateEvent(index, event)) - update(index); - return; - } - - bool click = (index == d->pressedIndex && index.isValid()); - bool selectedClicked = click && (event->button() & Qt::LeftButton) && d->pressedAlreadySelected; - EditTrigger trigger = (selectedClicked ? SelectedClicked : NoEditTriggers); - bool edited = edit(index, trigger, event); - - d->ctrlDragSelectionFlag = QItemSelectionModel::NoUpdate; - - if (d->selectionModel && d->noSelectionOnMousePress) { - d->noSelectionOnMousePress = false; - d->selectionModel->select(index, selectionCommand(index, event)); - } - - setState(NoState); - - if (click) { - emit clicked(index); - if (edited) - return; - QStyleOptionViewItemV4 option = d->viewOptionsV4(); - if (d->pressedAlreadySelected) - option.state |= QStyle::State_Selected; - if (style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick, &option, this)) - emit activated(index); - } -} - -/*! - This function is called with the given \a event when a mouse button is - double clicked inside the widget. If the double-click is on a valid item it - emits the doubleClicked() signal and calls edit() on the item. -*/ -void QAbstractItemView::mouseDoubleClickEvent(QMouseEvent *event) -{ - Q_D(QAbstractItemView); - - QModelIndex index = indexAt(event->pos()); - if (!index.isValid() - || !d->isIndexEnabled(index) - || (d->pressedIndex != index)) { - QMouseEvent me(QEvent::MouseButtonPress, - event->pos(), event->button(), - event->buttons(), event->modifiers()); - mousePressEvent(&me); - return; - } - // signal handlers may change the model - QPersistentModelIndex persistent = index; - emit doubleClicked(persistent); - if ((event->button() & Qt::LeftButton) && !edit(persistent, DoubleClicked, event) - && !style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick, 0, this)) - emit activated(persistent); -} - -#ifndef QT_NO_DRAGANDDROP - -/*! - This function is called with the given \a event when a drag and drop operation enters - the widget. If the drag is over a valid dropping place (e.g. over an item that - accepts drops), the event is accepted; otherwise it is ignored. - - \sa dropEvent() startDrag() -*/ -void QAbstractItemView::dragEnterEvent(QDragEnterEvent *event) -{ - if (dragDropMode() == InternalMove - && (event->source() != this|| !(event->possibleActions() & Qt::MoveAction))) - return; - - if (d_func()->canDecode(event)) { - event->accept(); - setState(DraggingState); - } else { - event->ignore(); - } -} - -/*! - This function is called continuously with the given \a event during a drag and - drop operation over the widget. It can cause the view to scroll if, for example, - the user drags a selection to view's right or bottom edge. In this case, the - event will be accepted; otherwise it will be ignored. - - \sa dropEvent() startDrag() -*/ -void QAbstractItemView::dragMoveEvent(QDragMoveEvent *event) -{ - Q_D(QAbstractItemView); - if (dragDropMode() == InternalMove - && (event->source() != this || !(event->possibleActions() & Qt::MoveAction))) - return; - - // ignore by default - event->ignore(); - - QModelIndex index = indexAt(event->pos()); - d->hover = index; - if (!d->droppingOnItself(event, index) - && d->canDecode(event)) { - - if (index.isValid() && d->showDropIndicator) { - QRect rect = visualRect(index); - d->dropIndicatorPosition = d->position(event->pos(), rect, index); - switch (d->dropIndicatorPosition) { - case AboveItem: - if (d->isIndexDropEnabled(index.parent())) { - d->dropIndicatorRect = QRect(rect.left(), rect.top(), rect.width(), 0); - event->accept(); - } else { - d->dropIndicatorRect = QRect(); - } - break; - case BelowItem: - if (d->isIndexDropEnabled(index.parent())) { - d->dropIndicatorRect = QRect(rect.left(), rect.bottom(), rect.width(), 0); - event->accept(); - } else { - d->dropIndicatorRect = QRect(); - } - break; - case OnItem: - if (d->isIndexDropEnabled(index)) { - d->dropIndicatorRect = rect; - event->accept(); - } else { - d->dropIndicatorRect = QRect(); - } - break; - case OnViewport: - d->dropIndicatorRect = QRect(); - if (d->isIndexDropEnabled(rootIndex())) { - event->accept(); // allow dropping in empty areas - } - break; - } - } else { - d->dropIndicatorRect = QRect(); - d->dropIndicatorPosition = OnViewport; - if (d->isIndexDropEnabled(rootIndex())) { - event->accept(); // allow dropping in empty areas - } - } - d->viewport->update(); - } // can decode - - if (d->shouldAutoScroll(event->pos())) - startAutoScroll(); -} - -/*! - \internal - Return true if this is a move from ourself and \a index is a child of the selection that - is being moved. - */ -bool QAbstractItemViewPrivate::droppingOnItself(QDropEvent *event, const QModelIndex &index) -{ - Q_Q(QAbstractItemView); - Qt::DropAction dropAction = event->dropAction(); - if (q->dragDropMode() == QAbstractItemView::InternalMove) - dropAction = Qt::MoveAction; - if (event->source() == q - && event->possibleActions() & Qt::MoveAction - && dropAction == Qt::MoveAction) { - QModelIndexList selectedIndexes = q->selectedIndexes(); - QModelIndex child = index; - while (child.isValid() && child != root) { - if (selectedIndexes.contains(child)) - return true; - child = child.parent(); - } - } - return false; -} - -/*! - \fn void QAbstractItemView::dragLeaveEvent(QDragLeaveEvent *event) - - This function is called when the item being dragged leaves the view. - The \a event describes the state of the drag and drop operation. -*/ -void QAbstractItemView::dragLeaveEvent(QDragLeaveEvent *) -{ - Q_D(QAbstractItemView); - stopAutoScroll(); - setState(NoState); - d->hover = QModelIndex(); - d->viewport->update(); -} - -/*! - This function is called with the given \a event when a drop event occurs over - the widget. If the model accepts the even position the drop event is accepted; - otherwise it is ignored. - - \sa startDrag() -*/ -void QAbstractItemView::dropEvent(QDropEvent *event) -{ - Q_D(QAbstractItemView); - if (dragDropMode() == InternalMove) { - if (event->source() != this || !(event->possibleActions() & Qt::MoveAction)) - return; - } - - QModelIndex index; - int col = -1; - int row = -1; - if (d->dropOn(event, &row, &col, &index)) { - if (d->model->dropMimeData(event->mimeData(), - dragDropMode() == InternalMove ? Qt::MoveAction : event->dropAction(), row, col, index)) { - if (dragDropMode() == InternalMove) - event->setDropAction(Qt::MoveAction); - event->accept(); - } - } - stopAutoScroll(); - setState(NoState); - d->viewport->update(); -} - -/*! - If the event hasn't already been accepted, determines the index to drop on. - - if (row == -1 && col == -1) - // append to this drop index - else - // place at row, col in drop index - - If it returns true a drop can be done, and dropRow, dropCol and dropIndex reflects the position of the drop. - \internal - */ -bool QAbstractItemViewPrivate::dropOn(QDropEvent *event, int *dropRow, int *dropCol, QModelIndex *dropIndex) -{ - Q_Q(QAbstractItemView); - if (event->isAccepted()) - return false; - - QModelIndex index; - // rootIndex() (i.e. the viewport) might be a valid index - if (viewport->rect().contains(event->pos())) { - index = q->indexAt(event->pos()); - if (!index.isValid() || !q->visualRect(index).contains(event->pos())) - index = root; - } - - // If we are allowed to do the drop - if (model->supportedDropActions() & event->dropAction()) { - int row = -1; - int col = -1; - if (index != root) { - dropIndicatorPosition = position(event->pos(), q->visualRect(index), index); - switch (dropIndicatorPosition) { - case QAbstractItemView::AboveItem: - row = index.row(); - col = index.column(); - index = index.parent(); - break; - case QAbstractItemView::BelowItem: - row = index.row() + 1; - col = index.column(); - index = index.parent(); - break; - case QAbstractItemView::OnItem: - case QAbstractItemView::OnViewport: - break; - } - } else { - dropIndicatorPosition = QAbstractItemView::OnViewport; - } - *dropIndex = index; - *dropRow = row; - *dropCol = col; - if (!droppingOnItself(event, index)) - return true; - } - return false; -} - -QAbstractItemView::DropIndicatorPosition -QAbstractItemViewPrivate::position(const QPoint &pos, const QRect &rect, const QModelIndex &index) const -{ - QAbstractItemView::DropIndicatorPosition r = QAbstractItemView::OnViewport; - if (!overwrite) { - const int margin = 2; - if (pos.y() - rect.top() < margin) { - r = QAbstractItemView::AboveItem; - } else if (rect.bottom() - pos.y() < margin) { - r = QAbstractItemView::BelowItem; - } else if (rect.contains(pos, true)) { - r = QAbstractItemView::OnItem; - } - } else { - QRect touchingRect = rect; - touchingRect.adjust(-1, -1, 1, 1); - if (touchingRect.contains(pos, false)) { - r = QAbstractItemView::OnItem; - } - } - - if (r == QAbstractItemView::OnItem && (!(model->flags(index) & Qt::ItemIsDropEnabled))) - r = pos.y() < rect.center().y() ? QAbstractItemView::AboveItem : QAbstractItemView::BelowItem; - - return r; -} - -#endif // QT_NO_DRAGANDDROP - -/*! - This function is called with the given \a event when the widget obtains the focus. - By default, the event is ignored. - - \sa setFocus(), focusOutEvent() -*/ -void QAbstractItemView::focusInEvent(QFocusEvent *event) -{ - Q_D(QAbstractItemView); - QAbstractScrollArea::focusInEvent(event); - - const QItemSelectionModel* model = selectionModel(); - const bool currentIndexValid = currentIndex().isValid(); - - if (model - && !d->currentIndexSet - && !currentIndexValid) { - bool autoScroll = d->autoScroll; - d->autoScroll = false; - QModelIndex index = moveCursor(MoveNext, Qt::NoModifier); // first visible index - if (index.isValid() && d->isIndexEnabled(index) && event->reason() != Qt::MouseFocusReason) - selectionModel()->setCurrentIndex(index, QItemSelectionModel::NoUpdate); - d->autoScroll = autoScroll; - } - - if (model && currentIndexValid) { - if (currentIndex().flags() != Qt::ItemIsEditable) - setAttribute(Qt::WA_InputMethodEnabled, false); - else - setAttribute(Qt::WA_InputMethodEnabled); - } - - if (!currentIndexValid) - setAttribute(Qt::WA_InputMethodEnabled, false); - - d->viewport->update(); -} - -/*! - This function is called with the given \a event when the widget - looses the focus. By default, the event is ignored. - - \sa clearFocus(), focusInEvent() -*/ -void QAbstractItemView::focusOutEvent(QFocusEvent *event) -{ - Q_D(QAbstractItemView); - QAbstractScrollArea::focusOutEvent(event); - d->viewport->update(); - -#ifdef QT_SOFTKEYS_ENABLED - if(!hasEditFocus()) - removeAction(d->doneSoftKey); -#endif -} - -/*! - This function is called with the given \a event when a key event is sent to - the widget. The default implementation handles basic cursor movement, e.g. Up, - Down, Left, Right, Home, PageUp, and PageDown; the activated() signal is - emitted if the current index is valid and the activation key is pressed - (e.g. Enter or Return, depending on the platform). - This function is where editing is initiated by key press, e.g. if F2 is - pressed. - - \sa edit(), moveCursor(), keyboardSearch(), tabKeyNavigation -*/ -void QAbstractItemView::keyPressEvent(QKeyEvent *event) -{ - Q_D(QAbstractItemView); - d->delayedAutoScroll.stop(); //any interaction with the view cancel the auto scrolling - -#ifdef QT_KEYPAD_NAVIGATION - switch (event->key()) { - case Qt::Key_Select: - if (QApplication::keypadNavigationEnabled()) { - if (!hasEditFocus()) { - setEditFocus(true); -#ifdef QT_SOFTKEYS_ENABLED - // If we can't keypad navigate to any direction, there is no sense to add - // "Done" softkey, since it basically does nothing when there is - // only one widget in screen - if(QWidgetPrivate::canKeypadNavigate(Qt::Horizontal) - || QWidgetPrivate::canKeypadNavigate(Qt::Vertical)) - addAction(d->doneSoftKey); -#endif - return; - } - } - break; - case Qt::Key_Back: - if (QApplication::keypadNavigationEnabled() && hasEditFocus()) { -#ifdef QT_SOFTKEYS_ENABLED - removeAction(d->doneSoftKey); -#endif - setEditFocus(false); - } else { - event->ignore(); - } - return; - case Qt::Key_Down: - case Qt::Key_Up: - // Let's ignore vertical navigation events, only if there is no other widget - // what can take the focus in vertical direction. This means widget can handle navigation events - // even the widget don't have edit focus, and there is no other widget in requested direction. - if(QApplication::keypadNavigationEnabled() && !hasEditFocus() - && QWidgetPrivate::canKeypadNavigate(Qt::Vertical)) { - event->ignore(); - return; - } - break; - case Qt::Key_Left: - case Qt::Key_Right: - // Similar logic as in up and down events - if(QApplication::keypadNavigationEnabled() && !hasEditFocus() - && (QWidgetPrivate::canKeypadNavigate(Qt::Horizontal) || QWidgetPrivate::inTabWidget(this))) { - event->ignore(); - return; - } - break; - default: - if (QApplication::keypadNavigationEnabled() && !hasEditFocus()) { - event->ignore(); - return; - } - } -#endif - -#if !defined(QT_NO_CLIPBOARD) && !defined(QT_NO_SHORTCUT) - if (event == QKeySequence::Copy) { - QVariant variant; - if (d->model) - variant = d->model->data(currentIndex(), Qt::DisplayRole); - if (variant.type() == QVariant::String) - QApplication::clipboard()->setText(variant.toString()); - event->accept(); - } -#endif - - QPersistentModelIndex newCurrent; - d->moveCursorUpdatedView = false; - switch (event->key()) { - case Qt::Key_Down: - newCurrent = moveCursor(MoveDown, event->modifiers()); - break; - case Qt::Key_Up: - newCurrent = moveCursor(MoveUp, event->modifiers()); - break; - case Qt::Key_Left: - newCurrent = moveCursor(MoveLeft, event->modifiers()); - break; - case Qt::Key_Right: - newCurrent = moveCursor(MoveRight, event->modifiers()); - break; - case Qt::Key_Home: - newCurrent = moveCursor(MoveHome, event->modifiers()); - break; - case Qt::Key_End: - newCurrent = moveCursor(MoveEnd, event->modifiers()); - break; - case Qt::Key_PageUp: - newCurrent = moveCursor(MovePageUp, event->modifiers()); - break; - case Qt::Key_PageDown: - newCurrent = moveCursor(MovePageDown, event->modifiers()); - break; - case Qt::Key_Tab: - if (d->tabKeyNavigation) - newCurrent = moveCursor(MoveNext, event->modifiers()); - break; - case Qt::Key_Backtab: - if (d->tabKeyNavigation) - newCurrent = moveCursor(MovePrevious, event->modifiers()); - break; - } - - QPersistentModelIndex oldCurrent = currentIndex(); - if (newCurrent != oldCurrent && newCurrent.isValid() && d->isIndexEnabled(newCurrent)) { - if (!hasFocus() && QApplication::focusWidget() == indexWidget(oldCurrent)) - setFocus(); - QItemSelectionModel::SelectionFlags command = selectionCommand(newCurrent, event); - if (command != QItemSelectionModel::NoUpdate - || style()->styleHint(QStyle::SH_ItemView_MovementWithoutUpdatingSelection, 0, this)) { - // note that we don't check if the new current index is enabled because moveCursor() makes sure it is - if (command & QItemSelectionModel::Current) { - d->selectionModel->setCurrentIndex(newCurrent, QItemSelectionModel::NoUpdate); - if (!indexAt(d->pressedPosition - d->offset()).isValid()) - d->pressedPosition = visualRect(oldCurrent).center() + d->offset(); - QRect rect(d->pressedPosition - d->offset(), visualRect(newCurrent).center()); - setSelection(rect, command); - } else { - d->selectionModel->setCurrentIndex(newCurrent, command); - d->pressedPosition = visualRect(newCurrent).center() + d->offset(); - if (newCurrent.isValid()) { - // We copy the same behaviour as for mousePressEvent(). - QRect rect(d->pressedPosition - d->offset(), QSize(1, 1)); - setSelection(rect, command); - } - } - event->accept(); - return; - } - } - - switch (event->key()) { - // ignored keys - case Qt::Key_Down: - case Qt::Key_Up: -#ifdef QT_KEYPAD_NAVIGATION - if (QApplication::keypadNavigationEnabled() && QWidgetPrivate::canKeypadNavigate(Qt::Vertical)) { - event->accept(); // don't change focus - break; - } -#endif - case Qt::Key_Left: - case Qt::Key_Right: -#ifdef QT_KEYPAD_NAVIGATION - if (QApplication::navigationMode() == Qt::NavigationModeKeypadDirectional - && (QWidgetPrivate::canKeypadNavigate(Qt::Horizontal) - || (QWidgetPrivate::inTabWidget(this) && d->model->columnCount(d->root) > 1))) { - event->accept(); // don't change focus - break; - } -#endif // QT_KEYPAD_NAVIGATION - case Qt::Key_Home: - case Qt::Key_End: - case Qt::Key_PageUp: - case Qt::Key_PageDown: - case Qt::Key_Escape: - case Qt::Key_Shift: - case Qt::Key_Control: - case Qt::Key_Delete: - case Qt::Key_Backspace: - event->ignore(); - break; - case Qt::Key_Space: - case Qt::Key_Select: - if (!edit(currentIndex(), AnyKeyPressed, event) && d->selectionModel) - d->selectionModel->select(currentIndex(), selectionCommand(currentIndex(), event)); -#ifdef QT_KEYPAD_NAVIGATION - if ( event->key()==Qt::Key_Select ) { - // Also do Key_Enter action. - if (currentIndex().isValid()) { - if (state() != EditingState) - emit activated(currentIndex()); - } else { - event->ignore(); - } - } -#endif - break; -#ifdef Q_WS_MAC - case Qt::Key_Enter: - case Qt::Key_Return: - // Propagate the enter if you couldn't edit the item and there are no - // current editors (if there are editors, the event was most likely propagated from it). - if (!edit(currentIndex(), EditKeyPressed, event) && d->editorIndexHash.isEmpty()) - event->ignore(); - break; -#else - case Qt::Key_F2: - if (!edit(currentIndex(), EditKeyPressed, event)) - event->ignore(); - break; - case Qt::Key_Enter: - case Qt::Key_Return: - // ### we can't open the editor on enter, becuse - // some widgets will forward the enter event back - // to the viewport, starting an endless loop - if (state() != EditingState || hasFocus()) { - if (currentIndex().isValid()) - emit activated(currentIndex()); - event->ignore(); - } - break; -#endif - case Qt::Key_A: - if (event->modifiers() & Qt::ControlModifier) { - selectAll(); - break; - } - default: { -#ifdef Q_WS_MAC - if (event->key() == Qt::Key_O && event->modifiers() & Qt::ControlModifier && currentIndex().isValid()) { - emit activated(currentIndex()); - break; - } -#endif - bool modified = (event->modifiers() & (Qt::ControlModifier | Qt::AltModifier | Qt::MetaModifier)); - if (!event->text().isEmpty() && !modified && !edit(currentIndex(), AnyKeyPressed, event)) { - keyboardSearch(event->text()); - event->accept(); - } else { - event->ignore(); - } - break; } - } - if (d->moveCursorUpdatedView) - event->accept(); -} - -/*! - This function is called with the given \a event when a resize event is sent to - the widget. - - \sa QWidget::resizeEvent() -*/ -void QAbstractItemView::resizeEvent(QResizeEvent *event) -{ - QAbstractScrollArea::resizeEvent(event); - updateGeometries(); -} - -/*! - This function is called with the given \a event when a timer event is sent - to the widget. - - \sa QObject::timerEvent() -*/ -void QAbstractItemView::timerEvent(QTimerEvent *event) -{ - Q_D(QAbstractItemView); - if (event->timerId() == d->fetchMoreTimer.timerId()) - d->fetchMore(); - else if (event->timerId() == d->delayedReset.timerId()) - reset(); - else if (event->timerId() == d->autoScrollTimer.timerId()) - doAutoScroll(); - else if (event->timerId() == d->updateTimer.timerId()) - d->updateDirtyRegion(); - else if (event->timerId() == d->delayedEditing.timerId()) { - d->delayedEditing.stop(); - edit(currentIndex()); - } else if (event->timerId() == d->delayedLayout.timerId()) { - d->delayedLayout.stop(); - if (isVisible()) { - d->interruptDelayedItemsLayout(); - doItemsLayout(); - const QModelIndex current = currentIndex(); - if (current.isValid() && d->state == QAbstractItemView::EditingState) - scrollTo(current); - } - } else if (event->timerId() == d->delayedAutoScroll.timerId()) { - d->delayedAutoScroll.stop(); - //end of the timer: if the current item is still the same as the one when the mouse press occurred - //we only get here if there was no double click - if (d->pressedIndex.isValid() && d->pressedIndex == currentIndex()) - scrollTo(d->pressedIndex); - } -} - -/*! - \reimp -*/ -void QAbstractItemView::inputMethodEvent(QInputMethodEvent *event) -{ - if (event->commitString().isEmpty() && event->preeditString().isEmpty()) { - event->ignore(); - return; - } - if (!edit(currentIndex(), AnyKeyPressed, event)) { - if (!event->commitString().isEmpty()) - keyboardSearch(event->commitString()); - event->ignore(); - } -} - -#ifndef QT_NO_DRAGANDDROP -/*! - \enum QAbstractItemView::DropIndicatorPosition - - This enum indicates the position of the drop indicator in - relation to the index at the current mouse position: - - \value OnItem The item will be dropped on the index. - - \value AboveItem The item will be dropped above the index. - - \value BelowItem The item will be dropped below the index. - - \value OnViewport The item will be dropped onto a region of the viewport with - no items. The way each view handles items dropped onto the viewport depends on - the behavior of the underlying model in use. -*/ - - -/*! - \since 4.1 - - Returns the position of the drop indicator in relation to the closest item. -*/ -QAbstractItemView::DropIndicatorPosition QAbstractItemView::dropIndicatorPosition() const -{ - Q_D(const QAbstractItemView); - return d->dropIndicatorPosition; -} -#endif - -/*! - 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. - - \sa QItemSelectionModel::selectedIndexes() -*/ -QModelIndexList QAbstractItemView::selectedIndexes() const -{ - Q_D(const QAbstractItemView); - QModelIndexList indexes; - if (d->selectionModel) { - indexes = d->selectionModel->selectedIndexes(); - QList<QModelIndex>::iterator it = indexes.begin(); - while (it != indexes.end()) - if (isIndexHidden(*it)) - it = indexes.erase(it); - else - ++it; - } - return indexes; -} - -/*! - Starts editing the item at \a index, creating an editor if - necessary, and returns true if the view's \l{State} is now - EditingState; otherwise returns false. - - The action that caused the editing process is described by - \a trigger, and the associated event is specified by \a event. - - Editing can be forced by specifying the \a trigger to be - QAbstractItemView::AllEditTriggers. - - \sa closeEditor() -*/ -bool QAbstractItemView::edit(const QModelIndex &index, EditTrigger trigger, QEvent *event) -{ - Q_D(QAbstractItemView); - - if (!d->isIndexValid(index)) - return false; - - if (QWidget *w = (d->persistent.isEmpty() ? static_cast<QWidget*>(0) : d->editorForIndex(index).widget.data())) { - if (w->focusPolicy() == Qt::NoFocus) - return false; - w->setFocus(); - return true; - } - - if (trigger == DoubleClicked) { - d->delayedEditing.stop(); - d->delayedAutoScroll.stop(); - } else if (trigger == CurrentChanged) { - d->delayedEditing.stop(); - } - - if (d->sendDelegateEvent(index, event)) { - update(index); - return true; - } - - // save the previous trigger before updating - EditTriggers lastTrigger = d->lastTrigger; - d->lastTrigger = trigger; - - if (!d->shouldEdit(trigger, d->model->buddy(index))) - return false; - - if (d->delayedEditing.isActive()) - return false; - - // we will receive a mouseButtonReleaseEvent after a - // mouseDoubleClickEvent, so we need to check the previous trigger - if (lastTrigger == DoubleClicked && trigger == SelectedClicked) - return false; - - // we may get a double click event later - if (trigger == SelectedClicked) - d->delayedEditing.start(QApplication::doubleClickInterval(), this); - else - d->openEditor(index, d->shouldForwardEvent(trigger, event) ? event : 0); - - return true; -} - -/*! - \internal - Updates the data shown in the open editor widgets in the view. -*/ -void QAbstractItemView::updateEditorData() -{ - Q_D(QAbstractItemView); - d->updateEditorData(QModelIndex(), QModelIndex()); -} - -/*! - \internal - Updates the geometry of the open editor widgets in the view. -*/ -void QAbstractItemView::updateEditorGeometries() -{ - Q_D(QAbstractItemView); - if(d->editorIndexHash.isEmpty()) - return; - QStyleOptionViewItemV4 option = d->viewOptionsV4(); - QEditorIndexHash::iterator it = d->editorIndexHash.begin(); - QWidgetList editorsToRelease; - QWidgetList editorsToHide; - while (it != d->editorIndexHash.end()) { - QModelIndex index = it.value(); - QWidget *editor = it.key(); - if (index.isValid() && editor) { - option.rect = visualRect(index); - if (option.rect.isValid()) { - editor->show(); - QAbstractItemDelegate *delegate = d->delegateForIndex(index); - if (delegate) - delegate->updateEditorGeometry(editor, option, index); - } else { - editorsToHide << editor; - } - ++it; - } else { - d->indexEditorHash.remove(it.value()); - it = d->editorIndexHash.erase(it); - editorsToRelease << editor; - } - } - - //we hide and release the editor outside of the loop because it might change the focus and try - //to change the editors hashes. - for (int i = 0; i < editorsToHide.count(); ++i) { - editorsToHide.at(i)->hide(); - } - for (int i = 0; i < editorsToRelease.count(); ++i) { - d->releaseEditor(editorsToRelease.at(i)); - } -} - -/*! - \since 4.4 - - Updates the geometry of the child widgets of the view. -*/ -void QAbstractItemView::updateGeometries() -{ - updateEditorGeometries(); - d_func()->fetchMoreTimer.start(0, this); //fetch more later -} - -/*! - \internal -*/ -void QAbstractItemView::verticalScrollbarValueChanged(int value) -{ - Q_D(QAbstractItemView); - if (verticalScrollBar()->maximum() == value && d->model->canFetchMore(d->root)) - d->model->fetchMore(d->root); - QPoint posInVp = viewport()->mapFromGlobal(QCursor::pos()); - if (viewport()->rect().contains(posInVp)) - d->checkMouseMove(posInVp); -} - -/*! - \internal -*/ -void QAbstractItemView::horizontalScrollbarValueChanged(int value) -{ - Q_D(QAbstractItemView); - if (horizontalScrollBar()->maximum() == value && d->model->canFetchMore(d->root)) - d->model->fetchMore(d->root); - QPoint posInVp = viewport()->mapFromGlobal(QCursor::pos()); - if (viewport()->rect().contains(posInVp)) - d->checkMouseMove(posInVp); -} - -/*! - \internal -*/ -void QAbstractItemView::verticalScrollbarAction(int) -{ - //do nothing -} - -/*! - \internal -*/ -void QAbstractItemView::horizontalScrollbarAction(int) -{ - //do nothing -} - -/*! - Closes the given \a editor, and releases it. The \a 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. - - \sa edit(), commitData() -*/ - -void QAbstractItemView::closeEditor(QWidget *editor, QAbstractItemDelegate::EndEditHint hint) -{ - Q_D(QAbstractItemView); - - // Close the editor - if (editor) { - bool isPersistent = d->persistent.contains(editor); - bool hadFocus = editor->hasFocus(); - QModelIndex index = d->indexForEditor(editor); - if (!index.isValid()) - return; // the editor was not registered - - if (!isPersistent) { - setState(NoState); - QModelIndex index = d->indexForEditor(editor); - editor->removeEventFilter(d->delegateForIndex(index)); - d->removeEditor(editor); - } - if (hadFocus) - setFocus(); // this will send a focusLost event to the editor - else - d->checkPersistentEditorFocus(); - - QPointer<QWidget> ed = editor; - QApplication::sendPostedEvents(editor, 0); - editor = ed; - - if (!isPersistent && editor) - d->releaseEditor(editor); - } - - // The EndEditHint part - QItemSelectionModel::SelectionFlags flags = QItemSelectionModel::ClearAndSelect - | d->selectionBehaviorFlags(); - switch (hint) { - case QAbstractItemDelegate::EditNextItem: { - QModelIndex index = moveCursor(MoveNext, Qt::NoModifier); - if (index.isValid()) { - QPersistentModelIndex persistent(index); - d->selectionModel->setCurrentIndex(persistent, flags); - // currentChanged signal would have already started editing - if (index.flags() & Qt::ItemIsEditable - && (!(editTriggers() & QAbstractItemView::CurrentChanged))) - edit(persistent); - } break; } - case QAbstractItemDelegate::EditPreviousItem: { - QModelIndex index = moveCursor(MovePrevious, Qt::NoModifier); - if (index.isValid()) { - QPersistentModelIndex persistent(index); - d->selectionModel->setCurrentIndex(persistent, flags); - // currentChanged signal would have already started editing - if (index.flags() & Qt::ItemIsEditable - && (!(editTriggers() & QAbstractItemView::CurrentChanged))) - edit(persistent); - } break; } - case QAbstractItemDelegate::SubmitModelCache: - d->model->submit(); - break; - case QAbstractItemDelegate::RevertModelCache: - d->model->revert(); - break; - default: - break; - } -} - -/*! - Commit the data in the \a editor to the model. - - \sa closeEditor() -*/ -void QAbstractItemView::commitData(QWidget *editor) -{ - Q_D(QAbstractItemView); - if (!editor || !d->itemDelegate || d->currentlyCommittingEditor) - return; - QModelIndex index = d->indexForEditor(editor); - if (!index.isValid()) - return; - d->currentlyCommittingEditor = editor; - QAbstractItemDelegate *delegate = d->delegateForIndex(index); - editor->removeEventFilter(delegate); - delegate->setModelData(editor, d->model, index); - editor->installEventFilter(delegate); - d->currentlyCommittingEditor = 0; -} - -/*! - This function is called when the given \a editor has been destroyed. - - \sa closeEditor() -*/ -void QAbstractItemView::editorDestroyed(QObject *editor) -{ - Q_D(QAbstractItemView); - QWidget *w = qobject_cast<QWidget*>(editor); - d->removeEditor(w); - d->persistent.remove(w); - if (state() == EditingState) - setState(NoState); -} - -/*! - \obsolete - Sets the horizontal scroll bar's steps per item to \a steps. - - This is the number of steps used by the horizontal scroll bar to - represent the width of an item. - - Note that if the view has a horizontal header, the item steps - will be ignored and the header section size will be used instead. - - \sa horizontalStepsPerItem() setVerticalStepsPerItem() -*/ -void QAbstractItemView::setHorizontalStepsPerItem(int steps) -{ - Q_UNUSED(steps); - // do nothing -} - -/*! - \obsolete - Returns the horizontal scroll bar's steps per item. - - \sa setHorizontalStepsPerItem() verticalStepsPerItem() -*/ -int QAbstractItemView::horizontalStepsPerItem() const -{ - return 1; -} - -/*! - \obsolete - Sets the vertical scroll bar's steps per item to \a steps. - - This is the number of steps used by the vertical scroll bar to - represent the height of an item. - - Note that if the view has a vertical header, the item steps - will be ignored and the header section size will be used instead. - - \sa verticalStepsPerItem() setHorizontalStepsPerItem() -*/ -void QAbstractItemView::setVerticalStepsPerItem(int steps) -{ - Q_UNUSED(steps); - // do nothing -} - -/*! - \obsolete - Returns the vertical scroll bar's steps per item. - - \sa setVerticalStepsPerItem() horizontalStepsPerItem() -*/ -int QAbstractItemView::verticalStepsPerItem() const -{ - return 1; -} - -/*! - Moves to and selects the item best matching the string \a search. - If no item is found nothing happens. - - In the default implementation, the search is reset if \a search is empty, or - the time interval since the last search has exceeded - QApplication::keyboardInputInterval(). -*/ -void QAbstractItemView::keyboardSearch(const QString &search) -{ - Q_D(QAbstractItemView); - if (!d->model->rowCount(d->root) || !d->model->columnCount(d->root)) - return; - - QModelIndex start = currentIndex().isValid() ? currentIndex() - : d->model->index(0, 0, d->root); - bool skipRow = false; - bool keyboardTimeWasValid = d->keyboardInputTime.isValid(); - qint64 keyboardInputTimeElapsed = d->keyboardInputTime.restart(); - if (search.isEmpty() || !keyboardTimeWasValid - || keyboardInputTimeElapsed > QApplication::keyboardInputInterval()) { - d->keyboardInput = search; - skipRow = currentIndex().isValid(); //if it is not valid we should really start at QModelIndex(0,0) - } else { - d->keyboardInput += search; - } - - // special case for searches with same key like 'aaaaa' - bool sameKey = false; - if (d->keyboardInput.length() > 1) { - int c = d->keyboardInput.count(d->keyboardInput.at(d->keyboardInput.length() - 1)); - sameKey = (c == d->keyboardInput.length()); - if (sameKey) - skipRow = true; - } - - // skip if we are searching for the same key or a new search started - if (skipRow) { - QModelIndex parent = start.parent(); - int newRow = (start.row() < d->model->rowCount(parent) - 1) ? start.row() + 1 : 0; - start = d->model->index(newRow, start.column(), parent); - } - - // search from start with wraparound - const QString searchString = sameKey ? QString(d->keyboardInput.at(0)) : d->keyboardInput; - QModelIndex current = start; - QModelIndexList match; - QModelIndex firstMatch; - QModelIndex startMatch; - QModelIndexList previous; - do { - match = d->model->match(current, Qt::DisplayRole, searchString); - if (match == previous) - break; - firstMatch = match.value(0); - previous = match; - if (firstMatch.isValid()) { - if (d->isIndexEnabled(firstMatch)) { - setCurrentIndex(firstMatch); - break; - } - int row = firstMatch.row() + 1; - if (row >= d->model->rowCount(firstMatch.parent())) - row = 0; - current = firstMatch.sibling(row, firstMatch.column()); - - //avoid infinite loop if all the matching items are disabled. - if (!startMatch.isValid()) - startMatch = firstMatch; - else if (startMatch == firstMatch) - break; - } - } while (current != start && firstMatch.isValid()); -} - -/*! - Returns the size hint for the item with the specified \a index or - an invalid size for invalid indexes. - - \sa sizeHintForRow(), sizeHintForColumn() -*/ -QSize QAbstractItemView::sizeHintForIndex(const QModelIndex &index) const -{ - Q_D(const QAbstractItemView); - if (!d->isIndexValid(index) || !d->itemDelegate) - return QSize(); - return d->delegateForIndex(index)->sizeHint(d->viewOptionsV4(), index); -} - -/*! - Returns the height size hint for the specified \a row or -1 if - there is no model. - - The returned height is calculated using the size hints of the - given \a 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 - \a row. - - \sa sizeHintForColumn() -*/ -int QAbstractItemView::sizeHintForRow(int row) const -{ - Q_D(const QAbstractItemView); - - if (row < 0 || row >= d->model->rowCount(d->root)) - return -1; - - ensurePolished(); - - QStyleOptionViewItemV4 option = d->viewOptionsV4(); - int height = 0; - int colCount = d->model->columnCount(d->root); - QModelIndex index; - for (int c = 0; c < colCount; ++c) { - index = d->model->index(row, c, d->root); - if (QWidget *editor = d->editorForIndex(index).widget.data()) - height = qMax(height, editor->height()); - int hint = d->delegateForIndex(index)->sizeHint(option, index).height(); - height = qMax(height, hint); - } - return height; -} - -/*! - Returns the width size hint for the specified \a 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 \a column. - - \sa sizeHintForRow() -*/ -int QAbstractItemView::sizeHintForColumn(int column) const -{ - Q_D(const QAbstractItemView); - - if (column < 0 || column >= d->model->columnCount(d->root)) - return -1; - - ensurePolished(); - - QStyleOptionViewItemV4 option = d->viewOptionsV4(); - int width = 0; - int rows = d->model->rowCount(d->root); - QModelIndex index; - for (int r = 0; r < rows; ++r) { - index = d->model->index(r, column, d->root); - if (QWidget *editor = d->editorForIndex(index).widget.data()) - width = qMax(width, editor->sizeHint().width()); - int hint = d->delegateForIndex(index)->sizeHint(option, index).width(); - width = qMax(width, hint); - } - return width; -} - -/*! - Opens a persistent editor on the item at the given \a index. - If no editor exists, the delegate will create a new editor. - - \sa closePersistentEditor() -*/ -void QAbstractItemView::openPersistentEditor(const QModelIndex &index) -{ - Q_D(QAbstractItemView); - QStyleOptionViewItemV4 options = d->viewOptionsV4(); - options.rect = visualRect(index); - options.state |= (index == currentIndex() ? QStyle::State_HasFocus : QStyle::State_None); - - QWidget *editor = d->editor(index, options); - if (editor) { - editor->show(); - d->persistent.insert(editor); - } -} - -/*! - Closes the persistent editor for the item at the given \a index. - - \sa openPersistentEditor() -*/ -void QAbstractItemView::closePersistentEditor(const QModelIndex &index) -{ - Q_D(QAbstractItemView); - if (QWidget *editor = d->editorForIndex(index).widget.data()) { - if (index == selectionModel()->currentIndex()) - closeEditor(editor, QAbstractItemDelegate::RevertModelCache); - d->persistent.remove(editor); - d->removeEditor(editor); - d->releaseEditor(editor); - } -} - -/*! - \since 4.1 - - Sets the given \a widget on the item at the given \a index, passing the - ownership of the widget to the viewport. - - If \a index is invalid (e.g., if you pass the root index), this function - will do nothing. - - The given \a widget's \l{QWidget}{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 \a 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. - - \snippet doc/src/snippets/code/src_gui_itemviews_qabstractitemview.cpp 1 - - 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. - - \sa {Delegate Classes} -*/ -void QAbstractItemView::setIndexWidget(const QModelIndex &index, QWidget *widget) -{ - Q_D(QAbstractItemView); - if (!d->isIndexValid(index)) - return; - if (QWidget *oldWidget = indexWidget(index)) { - d->persistent.remove(oldWidget); - d->removeEditor(oldWidget); - oldWidget->deleteLater(); - } - if (widget) { - widget->setParent(viewport()); - d->persistent.insert(widget); - d->addEditor(index, widget, true); - widget->show(); - dataChanged(index, index); // update the geometry - if (!d->delayedPendingLayout) - widget->setGeometry(visualRect(index)); - } -} - -/*! - \since 4.1 - - Returns the widget for the item at the given \a index. -*/ -QWidget* QAbstractItemView::indexWidget(const QModelIndex &index) const -{ - Q_D(const QAbstractItemView); - if (d->isIndexValid(index)) - if (QWidget *editor = d->editorForIndex(index).widget.data()) - return editor; - - return 0; -} - -/*! - \since 4.1 - - Scrolls the view to the top. - - \sa scrollTo(), scrollToBottom() -*/ -void QAbstractItemView::scrollToTop() -{ - verticalScrollBar()->setValue(verticalScrollBar()->minimum()); -} - -/*! - \since 4.1 - - Scrolls the view to the bottom. - - \sa scrollTo(), scrollToTop() -*/ -void QAbstractItemView::scrollToBottom() -{ - Q_D(QAbstractItemView); - if (d->delayedPendingLayout) { - d->executePostedLayout(); - updateGeometries(); - } - verticalScrollBar()->setValue(verticalScrollBar()->maximum()); -} - -/*! - \since 4.3 - - Updates the area occupied by the given \a index. - -*/ -void QAbstractItemView::update(const QModelIndex &index) -{ - Q_D(QAbstractItemView); - if (index.isValid()) { - const QRect rect = visualRect(index); - //this test is important for peformance reason - //For example in dataChanged we simply update all the cells without checking - //it can be a major bottleneck to update rects that aren't even part of the viewport - if (d->viewport->rect().intersects(rect)) - d->viewport->update(rect); - } -} - -/*! - This slot is called when items are changed in the model. The - changed items are those from \a topLeft to \a bottomRight - inclusive. If just one item is changed \a topLeft == \a - bottomRight. -*/ -void QAbstractItemView::dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight) -{ - // Single item changed - Q_D(QAbstractItemView); - if (topLeft == bottomRight && topLeft.isValid()) { - const QEditorInfo &editorInfo = d->editorForIndex(topLeft); - //we don't update the edit data if it is static - if (!editorInfo.isStatic && editorInfo.widget) { - QAbstractItemDelegate *delegate = d->delegateForIndex(topLeft); - if (delegate) { - delegate->setEditorData(editorInfo.widget.data(), topLeft); - } - } - if (isVisible() && !d->delayedPendingLayout) { - // otherwise the items will be update later anyway - update(topLeft); - } - return; - } - d->updateEditorData(topLeft, bottomRight); - if (!isVisible() || d->delayedPendingLayout) - return; // no need to update - d->viewport->update(); -} - -/*! - This slot is called when rows are inserted. The new rows are those - under the given \a parent from \a start to \a end inclusive. The - base class implementation calls fetchMore() on the model to check - for more data. - - \sa rowsAboutToBeRemoved() -*/ -void QAbstractItemView::rowsInserted(const QModelIndex &, int, int) -{ - if (!isVisible()) - d_func()->fetchMoreTimer.start(0, this); //fetch more later - else - updateEditorGeometries(); -} - -/*! - This slot is called when rows are about to be removed. The deleted rows are - those under the given \a parent from \a start to \a end inclusive. - - \sa rowsInserted() -*/ -void QAbstractItemView::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end) -{ - Q_D(QAbstractItemView); - - setState(CollapsingState); - - // Ensure one selected item in single selection mode. - QModelIndex current = currentIndex(); - if (d->selectionMode == SingleSelection - && current.isValid() - && current.row() >= start - && current.row() <= end - && current.parent() == parent) { - int totalToRemove = end - start + 1; - if (d->model->rowCount(parent) <= totalToRemove) { // no more children - QModelIndex index = parent; - while (index != d->root && !d->isIndexEnabled(index)) - index = index.parent(); - if (index != d->root) - setCurrentIndex(index); - } else { - int row = end + 1; - QModelIndex next; - do { // find the next visible and enabled item - next = d->model->index(row++, current.column(), current.parent()); - } while (next.isValid() && (isIndexHidden(next) || !d->isIndexEnabled(next))); - if (row > d->model->rowCount(parent)) { - row = start - 1; - do { // find the previous visible and enabled item - next = d->model->index(row--, current.column(), current.parent()); - } while (next.isValid() && (isIndexHidden(next) || !d->isIndexEnabled(next))); - } - setCurrentIndex(next); - } - } - - // Remove all affected editors; this is more efficient than waiting for updateGeometries() to clean out editors for invalid indexes - QEditorIndexHash::iterator i = d->editorIndexHash.begin(); - while (i != d->editorIndexHash.end()) { - const QModelIndex index = i.value(); - if (index.row() >= start && index.row() <= end && d->model->parent(index) == parent) { - QWidget *editor = i.key(); - QEditorInfo info = d->indexEditorHash.take(index); - i = d->editorIndexHash.erase(i); - if (info.widget) - d->releaseEditor(editor); - } else { - ++i; - } - } -} - -/*! - \internal - - This slot is called when rows have been removed. The deleted - rows are those under the given \a parent from \a start to \a end - inclusive. -*/ -void QAbstractItemViewPrivate::_q_rowsRemoved(const QModelIndex &, int, int) -{ - Q_Q(QAbstractItemView); - if (q->isVisible()) - q->updateEditorGeometries(); - q->setState(QAbstractItemView::NoState); -} - -/*! - \internal - - This slot is called when columns are about to be removed. The deleted - columns are those under the given \a parent from \a start to \a end - inclusive. -*/ -void QAbstractItemViewPrivate::_q_columnsAboutToBeRemoved(const QModelIndex &parent, int start, int end) -{ - Q_Q(QAbstractItemView); - - q->setState(QAbstractItemView::CollapsingState); - - // Ensure one selected item in single selection mode. - QModelIndex current = q->currentIndex(); - if (current.isValid() - && selectionMode == QAbstractItemView::SingleSelection - && current.column() >= start - && current.column() <= end) { - int totalToRemove = end - start + 1; - if (model->columnCount(parent) < totalToRemove) { // no more columns - QModelIndex index = parent; - while (index.isValid() && !isIndexEnabled(index)) - index = index.parent(); - if (index.isValid()) - q->setCurrentIndex(index); - } else { - int column = end; - QModelIndex next; - do { // find the next visible and enabled item - next = model->index(current.row(), column++, current.parent()); - } while (next.isValid() && (q->isIndexHidden(next) || !isIndexEnabled(next))); - q->setCurrentIndex(next); - } - } - - // Remove all affected editors; this is more efficient than waiting for updateGeometries() to clean out editors for invalid indexes - QEditorIndexHash::iterator it = editorIndexHash.begin(); - while (it != editorIndexHash.end()) { - QModelIndex index = it.value(); - if (index.column() <= start && index.column() >= end && model->parent(index) == parent) { - QWidget *editor = it.key(); - QEditorInfo info = indexEditorHash.take(it.value()); - it = editorIndexHash.erase(it); - if (info.widget) - releaseEditor(editor); - } else { - ++it; - } - } - -} - -/*! - \internal - - This slot is called when columns have been removed. The deleted - rows are those under the given \a parent from \a start to \a end - inclusive. -*/ -void QAbstractItemViewPrivate::_q_columnsRemoved(const QModelIndex &, int, int) -{ - Q_Q(QAbstractItemView); - if (q->isVisible()) - q->updateEditorGeometries(); - q->setState(QAbstractItemView::NoState); -} - -/*! - \internal - - This slot is called when rows have been inserted. -*/ -void QAbstractItemViewPrivate::_q_columnsInserted(const QModelIndex &, int, int) -{ - Q_Q(QAbstractItemView); - if (q->isVisible()) - q->updateEditorGeometries(); -} - - - -/*! - \internal -*/ -void QAbstractItemViewPrivate::_q_modelDestroyed() -{ - model = QAbstractItemModelPrivate::staticEmptyModel(); - doDelayedReset(); -} - -/*! - \internal - - This slot is called when the layout is changed. -*/ -void QAbstractItemViewPrivate::_q_layoutChanged() -{ - doDelayedItemsLayout(); -} - -/*! - This slot is called when the selection is changed. The previous - selection (which may be empty), is specified by \a deselected, and the - new selection by \a selected. - - \sa setSelection() -*/ -void QAbstractItemView::selectionChanged(const QItemSelection &selected, - const QItemSelection &deselected) -{ - Q_D(QAbstractItemView); - if (isVisible() && updatesEnabled()) { - d->viewport->update(visualRegionForSelection(deselected) | visualRegionForSelection(selected)); - } -} - -/*! - This slot is called when a new item becomes the current item. - The previous current item is specified by the \a previous index, and the new - item by the \a current index. - - If you want to know about changes to items see the - dataChanged() signal. -*/ -void QAbstractItemView::currentChanged(const QModelIndex ¤t, const QModelIndex &previous) -{ - Q_D(QAbstractItemView); - Q_ASSERT(d->model); - - if (previous.isValid()) { - QModelIndex buddy = d->model->buddy(previous); - QWidget *editor = d->editorForIndex(buddy).widget.data(); - if (editor && !d->persistent.contains(editor)) { - commitData(editor); - if (current.row() != previous.row()) - closeEditor(editor, QAbstractItemDelegate::SubmitModelCache); - else - closeEditor(editor, QAbstractItemDelegate::NoHint); - } - if (isVisible()) { - update(previous); - } - } - - if (current.isValid() && !d->autoScrollTimer.isActive()) { - if (isVisible()) { - if (d->autoScroll) - scrollTo(current); - update(current); - edit(current, CurrentChanged, 0); - if (current.row() == (d->model->rowCount(d->root) - 1)) - d->fetchMore(); - } else { - d->shouldScrollToCurrentOnShow = d->autoScroll; - } - } -} - -#ifndef QT_NO_DRAGANDDROP -/*! - Starts a drag by calling drag->exec() using the given \a supportedActions. -*/ -void QAbstractItemView::startDrag(Qt::DropActions supportedActions) -{ - Q_D(QAbstractItemView); - QModelIndexList indexes = d->selectedDraggableIndexes(); - if (indexes.count() > 0) { - QMimeData *data = d->model->mimeData(indexes); - if (!data) - return; - QRect rect; - QPixmap pixmap = d->renderToPixmap(indexes, &rect); - rect.adjust(horizontalOffset(), verticalOffset(), 0, 0); - QDrag *drag = new QDrag(this); - drag->setPixmap(pixmap); - drag->setMimeData(data); - drag->setHotSpot(d->pressedPosition - rect.topLeft()); - Qt::DropAction defaultDropAction = Qt::IgnoreAction; - if (d->defaultDropAction != Qt::IgnoreAction && (supportedActions & d->defaultDropAction)) - defaultDropAction = d->defaultDropAction; - else if (supportedActions & Qt::CopyAction && dragDropMode() != QAbstractItemView::InternalMove) - defaultDropAction = Qt::CopyAction; - if (drag->exec(supportedActions, defaultDropAction) == Qt::MoveAction) - d->clearOrRemove(); - } -} -#endif // QT_NO_DRAGANDDROP - -/*! - Returns a QStyleOptionViewItem structure populated with the view's - palette, font, state, alignments etc. -*/ -QStyleOptionViewItem QAbstractItemView::viewOptions() const -{ - Q_D(const QAbstractItemView); - QStyleOptionViewItem option; - option.init(this); - option.state &= ~QStyle::State_MouseOver; - option.font = font(); - -#ifndef Q_WS_MAC - // On mac the focus appearance follows window activation - // not widget activation - if (!hasFocus()) - option.state &= ~QStyle::State_Active; -#endif - - option.state &= ~QStyle::State_HasFocus; - if (d->iconSize.isValid()) { - option.decorationSize = d->iconSize; - } else { - int pm = style()->pixelMetric(QStyle::PM_SmallIconSize, 0, this); - option.decorationSize = QSize(pm, pm); - } - option.decorationPosition = QStyleOptionViewItem::Left; - option.decorationAlignment = Qt::AlignCenter; - option.displayAlignment = Qt::AlignLeft|Qt::AlignVCenter; - option.textElideMode = d->textElideMode; - option.rect = QRect(); - option.showDecorationSelected = style()->styleHint(QStyle::SH_ItemView_ShowDecorationSelected, 0, this); - return option; -} - -QStyleOptionViewItemV4 QAbstractItemViewPrivate::viewOptionsV4() const -{ - Q_Q(const QAbstractItemView); - QStyleOptionViewItemV4 option = q->viewOptions(); - if (wrapItemText) - option.features = QStyleOptionViewItemV2::WrapText; - option.locale = q->locale(); - option.locale.setNumberOptions(QLocale::OmitGroupSeparator); - option.widget = q; - return option; -} - -/*! - Returns the item view's state. - - \sa setState() -*/ -QAbstractItemView::State QAbstractItemView::state() const -{ - Q_D(const QAbstractItemView); - return d->state; -} - -/*! - Sets the item view's state to the given \a state. - - \sa state() -*/ -void QAbstractItemView::setState(State state) -{ - Q_D(QAbstractItemView); - d->state = state; -} - -/*! - 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. - - \sa executeDelayedItemsLayout() -*/ -void QAbstractItemView::scheduleDelayedItemsLayout() -{ - Q_D(QAbstractItemView); - d->doDelayedItemsLayout(); -} - -/*! - Executes the scheduled layouts without waiting for the event processing - to begin. - - \sa scheduleDelayedItemsLayout() -*/ -void QAbstractItemView::executeDelayedItemsLayout() -{ - Q_D(QAbstractItemView); - d->executePostedLayout(); -} - -/*! - \since 4.1 - - Marks the given \a region as dirty and schedules it to be updated. - You only need to call this function if you are implementing - your own view subclass. - - \sa scrollDirtyRegion(), dirtyRegionOffset() -*/ - -void QAbstractItemView::setDirtyRegion(const QRegion ®ion) -{ - Q_D(QAbstractItemView); - d->setDirtyRegion(region); -} - -/*! - Prepares the view for scrolling by (\a{dx},\a{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(). - - \sa scrollContentsBy(), dirtyRegionOffset(), setDirtyRegion() -*/ -void QAbstractItemView::scrollDirtyRegion(int dx, int dy) -{ - Q_D(QAbstractItemView); - d->scrollDirtyRegion(dx, dy); -} - -/*! - 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. - - \sa scrollDirtyRegion(), setDirtyRegion() -*/ -QPoint QAbstractItemView::dirtyRegionOffset() const -{ - Q_D(const QAbstractItemView); - return d->scrollDelayOffset; -} - -/*! - \internal -*/ -void QAbstractItemView::startAutoScroll() -{ - d_func()->startAutoScroll(); -} - -/*! - \internal -*/ -void QAbstractItemView::stopAutoScroll() -{ - d_func()->stopAutoScroll(); -} - -/*! - \internal -*/ -void QAbstractItemView::doAutoScroll() -{ - // find how much we should scroll with - Q_D(QAbstractItemView); - int verticalStep = verticalScrollBar()->pageStep(); - int horizontalStep = horizontalScrollBar()->pageStep(); - if (d->autoScrollCount < qMax(verticalStep, horizontalStep)) - ++d->autoScrollCount; - - int margin = d->autoScrollMargin; - int verticalValue = verticalScrollBar()->value(); - int horizontalValue = horizontalScrollBar()->value(); - - QPoint pos = d->viewport->mapFromGlobal(QCursor::pos()); - QRect area = static_cast<QAbstractItemView*>(d->viewport)->d_func()->clipRect(); // access QWidget private by bending C++ rules - - // do the scrolling if we are in the scroll margins - if (pos.y() - area.top() < margin) - verticalScrollBar()->setValue(verticalValue - d->autoScrollCount); - else if (area.bottom() - pos.y() < margin) - verticalScrollBar()->setValue(verticalValue + d->autoScrollCount); - if (pos.x() - area.left() < margin) - horizontalScrollBar()->setValue(horizontalValue - d->autoScrollCount); - else if (area.right() - pos.x() < margin) - horizontalScrollBar()->setValue(horizontalValue + d->autoScrollCount); - // if nothing changed, stop scrolling - bool verticalUnchanged = (verticalValue == verticalScrollBar()->value()); - bool horizontalUnchanged = (horizontalValue == horizontalScrollBar()->value()); - if (verticalUnchanged && horizontalUnchanged) { - stopAutoScroll(); - } else { -#ifndef QT_NO_DRAGANDDROP - d->dropIndicatorRect = QRect(); - d->dropIndicatorPosition = QAbstractItemView::OnViewport; -#endif - d->viewport->update(); - } -} - -/*! - Returns the SelectionFlags to be used when updating a selection with - to include the \a index specified. The \a event is a user input event, - such as a mouse or keyboard event. - - Reimplement this function to define your own selection behavior. - - \sa setSelection() -*/ -QItemSelectionModel::SelectionFlags QAbstractItemView::selectionCommand(const QModelIndex &index, - const QEvent *event) const -{ - Q_D(const QAbstractItemView); - switch (d->selectionMode) { - case NoSelection: // Never update selection model - return QItemSelectionModel::NoUpdate; - case SingleSelection: // ClearAndSelect on valid index otherwise NoUpdate - if (event && event->type() == QEvent::MouseButtonRelease) - return QItemSelectionModel::NoUpdate; - return QItemSelectionModel::ClearAndSelect|d->selectionBehaviorFlags(); - case MultiSelection: - return d->multiSelectionCommand(index, event); - case ExtendedSelection: - return d->extendedSelectionCommand(index, event); - case ContiguousSelection: - return d->contiguousSelectionCommand(index, event); - } - return QItemSelectionModel::NoUpdate; -} - -QItemSelectionModel::SelectionFlags QAbstractItemViewPrivate::multiSelectionCommand( - const QModelIndex &index, const QEvent *event) const -{ - Q_UNUSED(index); - - if (event) { - switch (event->type()) { - case QEvent::KeyPress: - if (static_cast<const QKeyEvent*>(event)->key() == Qt::Key_Space - || static_cast<const QKeyEvent*>(event)->key() == Qt::Key_Select) - return QItemSelectionModel::Toggle|selectionBehaviorFlags(); - break; - case QEvent::MouseButtonPress: - if (static_cast<const QMouseEvent*>(event)->button() == Qt::LeftButton) - return QItemSelectionModel::Toggle|selectionBehaviorFlags(); // toggle - break; - case QEvent::MouseButtonRelease: - if (static_cast<const QMouseEvent*>(event)->button() == Qt::LeftButton) - return QItemSelectionModel::NoUpdate|selectionBehaviorFlags(); // finalize - break; - case QEvent::MouseMove: - if (static_cast<const QMouseEvent*>(event)->buttons() & Qt::LeftButton) - return QItemSelectionModel::ToggleCurrent|selectionBehaviorFlags(); // toggle drag select - default: - break; - } - return QItemSelectionModel::NoUpdate; - } - - return QItemSelectionModel::Toggle|selectionBehaviorFlags(); -} - -QItemSelectionModel::SelectionFlags QAbstractItemViewPrivate::extendedSelectionCommand( - const QModelIndex &index, const QEvent *event) const -{ - Qt::KeyboardModifiers modifiers = QApplication::keyboardModifiers(); - if (event) { - switch (event->type()) { - case QEvent::MouseMove: { - // Toggle on MouseMove - modifiers = static_cast<const QMouseEvent*>(event)->modifiers(); - if (modifiers & Qt::ControlModifier) - return QItemSelectionModel::ToggleCurrent|selectionBehaviorFlags(); - break; - } - case QEvent::MouseButtonPress: { - modifiers = static_cast<const QMouseEvent*>(event)->modifiers(); - const Qt::MouseButton button = static_cast<const QMouseEvent*>(event)->button(); - const bool rightButtonPressed = button & Qt::RightButton; - const bool shiftKeyPressed = modifiers & Qt::ShiftModifier; - const bool controlKeyPressed = modifiers & Qt::ControlModifier; - const bool indexIsSelected = selectionModel->isSelected(index); - if ((shiftKeyPressed || controlKeyPressed) && rightButtonPressed) - return QItemSelectionModel::NoUpdate; - if (!shiftKeyPressed && !controlKeyPressed && indexIsSelected) - return QItemSelectionModel::NoUpdate; - if (!index.isValid() && !rightButtonPressed && !shiftKeyPressed && !controlKeyPressed) - return QItemSelectionModel::Clear; - if (!index.isValid()) - return QItemSelectionModel::NoUpdate; - break; - } - case QEvent::MouseButtonRelease: { - // ClearAndSelect on MouseButtonRelease if MouseButtonPress on selected item or empty area - modifiers = static_cast<const QMouseEvent*>(event)->modifiers(); - const Qt::MouseButton button = static_cast<const QMouseEvent*>(event)->button(); - const bool rightButtonPressed = button & Qt::RightButton; - const bool shiftKeyPressed = modifiers & Qt::ShiftModifier; - const bool controlKeyPressed = modifiers & Qt::ControlModifier; - if (((index == pressedIndex && selectionModel->isSelected(index)) - || !index.isValid()) && state != QAbstractItemView::DragSelectingState - && !shiftKeyPressed && !controlKeyPressed && (!rightButtonPressed || !index.isValid())) - return QItemSelectionModel::ClearAndSelect|selectionBehaviorFlags(); - return QItemSelectionModel::NoUpdate; - } - case QEvent::KeyPress: { - // NoUpdate on Key movement and Ctrl - modifiers = static_cast<const QKeyEvent*>(event)->modifiers(); - switch (static_cast<const QKeyEvent*>(event)->key()) { - case Qt::Key_Backtab: - modifiers = modifiers & ~Qt::ShiftModifier; // special case for backtab - case Qt::Key_Down: - case Qt::Key_Up: - case Qt::Key_Left: - case Qt::Key_Right: - case Qt::Key_Home: - case Qt::Key_End: - case Qt::Key_PageUp: - case Qt::Key_PageDown: - case Qt::Key_Tab: - if (modifiers & Qt::ControlModifier -#ifdef QT_KEYPAD_NAVIGATION - // Preserve historical tab order navigation behavior - || QApplication::navigationMode() == Qt::NavigationModeKeypadTabOrder -#endif - ) - return QItemSelectionModel::NoUpdate; - break; - case Qt::Key_Select: - return QItemSelectionModel::Toggle|selectionBehaviorFlags(); - case Qt::Key_Space:// Toggle on Ctrl-Qt::Key_Space, Select on Space - if (modifiers & Qt::ControlModifier) - return QItemSelectionModel::Toggle|selectionBehaviorFlags(); - return QItemSelectionModel::Select|selectionBehaviorFlags(); - default: - break; - } - } - default: - break; - } - } - - if (modifiers & Qt::ShiftModifier) - return QItemSelectionModel::SelectCurrent|selectionBehaviorFlags(); - if (modifiers & Qt::ControlModifier) - return QItemSelectionModel::Toggle|selectionBehaviorFlags(); - if (state == QAbstractItemView::DragSelectingState) { - //when drag-selecting we need to clear any previous selection and select the current one - return QItemSelectionModel::Clear|QItemSelectionModel::SelectCurrent|selectionBehaviorFlags(); - } - - return QItemSelectionModel::ClearAndSelect|selectionBehaviorFlags(); -} - -QItemSelectionModel::SelectionFlags -QAbstractItemViewPrivate::contiguousSelectionCommand(const QModelIndex &index, - const QEvent *event) const -{ - QItemSelectionModel::SelectionFlags flags = extendedSelectionCommand(index, event); - const int Mask = QItemSelectionModel::Clear | QItemSelectionModel::Select - | QItemSelectionModel::Deselect | QItemSelectionModel::Toggle - | QItemSelectionModel::Current; - - switch (flags & Mask) { - case QItemSelectionModel::Clear: - case QItemSelectionModel::ClearAndSelect: - case QItemSelectionModel::SelectCurrent: - return flags; - case QItemSelectionModel::NoUpdate: - if (event && - (event->type() == QEvent::MouseButtonPress - || event->type() == QEvent::MouseButtonRelease)) - return flags; - return QItemSelectionModel::ClearAndSelect|selectionBehaviorFlags(); - default: - return QItemSelectionModel::SelectCurrent|selectionBehaviorFlags(); - } -} - -void QAbstractItemViewPrivate::fetchMore() -{ - fetchMoreTimer.stop(); - if (!model->canFetchMore(root)) - return; - int last = model->rowCount(root) - 1; - if (last < 0) { - model->fetchMore(root); - return; - } - - QModelIndex index = model->index(last, 0, root); - QRect rect = q_func()->visualRect(index); - if (viewport->rect().intersects(rect)) - model->fetchMore(root); -} - -bool QAbstractItemViewPrivate::shouldEdit(QAbstractItemView::EditTrigger trigger, - const QModelIndex &index) const -{ - if (!index.isValid()) - return false; - Qt::ItemFlags flags = model->flags(index); - if (((flags & Qt::ItemIsEditable) == 0) || ((flags & Qt::ItemIsEnabled) == 0)) - return false; - if (state == QAbstractItemView::EditingState) - return false; - if (hasEditor(index)) - return false; - if (trigger == QAbstractItemView::AllEditTriggers) // force editing - return true; - if ((trigger & editTriggers) == QAbstractItemView::SelectedClicked - && !selectionModel->isSelected(index)) - return false; - return (trigger & editTriggers); -} - -bool QAbstractItemViewPrivate::shouldForwardEvent(QAbstractItemView::EditTrigger trigger, - const QEvent *event) const -{ - if (!event || (trigger & editTriggers) != QAbstractItemView::AnyKeyPressed) - return false; - - switch (event->type()) { - case QEvent::KeyPress: - case QEvent::MouseButtonDblClick: - case QEvent::MouseButtonPress: - case QEvent::MouseButtonRelease: - case QEvent::MouseMove: - return true; - default: - break; - }; - - return false; -} - -bool QAbstractItemViewPrivate::shouldAutoScroll(const QPoint &pos) const -{ - if (!autoScroll) - return false; - QRect area = static_cast<QAbstractItemView*>(viewport)->d_func()->clipRect(); // access QWidget private by bending C++ rules - return (pos.y() - area.top() < autoScrollMargin) - || (area.bottom() - pos.y() < autoScrollMargin) - || (pos.x() - area.left() < autoScrollMargin) - || (area.right() - pos.x() < autoScrollMargin); -} - -void QAbstractItemViewPrivate::doDelayedItemsLayout(int delay) -{ - if (!delayedPendingLayout) { - delayedPendingLayout = true; - delayedLayout.start(delay, q_func()); - } -} - -void QAbstractItemViewPrivate::interruptDelayedItemsLayout() const -{ - delayedLayout.stop(); - delayedPendingLayout = false; -} - - - -QWidget *QAbstractItemViewPrivate::editor(const QModelIndex &index, - const QStyleOptionViewItem &options) -{ - Q_Q(QAbstractItemView); - QWidget *w = editorForIndex(index).widget.data(); - if (!w) { - QAbstractItemDelegate *delegate = delegateForIndex(index); - if (!delegate) - return 0; - w = delegate->createEditor(viewport, options, index); - if (w) { - w->installEventFilter(delegate); - QObject::connect(w, SIGNAL(destroyed(QObject*)), q, SLOT(editorDestroyed(QObject*))); - delegate->updateEditorGeometry(w, options, index); - delegate->setEditorData(w, index); - addEditor(index, w, false); - if (w->parent() == viewport) - QWidget::setTabOrder(q, w); - - // Special cases for some editors containing QLineEdit - QWidget *focusWidget = w; - while (QWidget *fp = focusWidget->focusProxy()) - focusWidget = fp; -#ifndef QT_NO_LINEEDIT - if (QLineEdit *le = qobject_cast<QLineEdit*>(focusWidget)) - le->selectAll(); -#endif -#ifndef QT_NO_SPINBOX - if (QSpinBox *sb = qobject_cast<QSpinBox*>(focusWidget)) - sb->selectAll(); - else if (QDoubleSpinBox *dsb = qobject_cast<QDoubleSpinBox*>(focusWidget)) - dsb->selectAll(); -#endif - } - } - - return w; -} - -void QAbstractItemViewPrivate::updateEditorData(const QModelIndex &tl, const QModelIndex &br) -{ - // we are counting on having relatively few editors - const bool checkIndexes = tl.isValid() && br.isValid(); - const QModelIndex parent = tl.parent(); - QIndexEditorHash::const_iterator it = indexEditorHash.constBegin(); - for (; it != indexEditorHash.constEnd(); ++it) { - QWidget *editor = it.value().widget.data(); - const QModelIndex index = it.key(); - if (it.value().isStatic || !editor || !index.isValid() || - (checkIndexes - && (index.row() < tl.row() || index.row() > br.row() - || index.column() < tl.column() || index.column() > br.column() - || index.parent() != parent))) - continue; - - QAbstractItemDelegate *delegate = delegateForIndex(index); - if (delegate) { - delegate->setEditorData(editor, index); - } - } -} - -/*! - \internal - - In DND if something has been moved then this is called. - Typically this means you should "remove" the selected item or row, - but the behavior is view dependant (table just clears the selected indexes for example). - - Either remove the selected rows or clear them -*/ -void QAbstractItemViewPrivate::clearOrRemove() -{ -#ifndef QT_NO_DRAGANDDROP - const QItemSelection selection = selectionModel->selection(); - QList<QItemSelectionRange>::const_iterator it = selection.constBegin(); - - if (!overwrite) { - for (; it != selection.constEnd(); ++it) { - QModelIndex parent = (*it).parent(); - if ((*it).left() != 0) - continue; - if ((*it).right() != (model->columnCount(parent) - 1)) - continue; - int count = (*it).bottom() - (*it).top() + 1; - model->removeRows((*it).top(), count, parent); - } - } else { - // we can't remove the rows so reset the items (i.e. the view is like a table) - QModelIndexList list = selection.indexes(); - for (int i=0; i < list.size(); ++i) { - QModelIndex index = list.at(i); - QMap<int, QVariant> roles = model->itemData(index); - for (QMap<int, QVariant>::Iterator it = roles.begin(); it != roles.end(); ++it) - it.value() = QVariant(); - model->setItemData(index, roles); - } - } -#endif -} - -/*! - \internal - - When persistent aeditor gets/loses focus, we need to check - and setcorrectly the current index. -*/ -void QAbstractItemViewPrivate::checkPersistentEditorFocus() -{ - Q_Q(QAbstractItemView); - if (QWidget *widget = QApplication::focusWidget()) { - if (persistent.contains(widget)) { - //a persistent editor has gained the focus - QModelIndex index = indexForEditor(widget); - if (selectionModel->currentIndex() != index) - q->setCurrentIndex(index); - } - } -} - - -const QEditorInfo & QAbstractItemViewPrivate::editorForIndex(const QModelIndex &index) const -{ - static QEditorInfo nullInfo; - - QIndexEditorHash::const_iterator it = indexEditorHash.find(index); - if (it == indexEditorHash.end()) - return nullInfo; - - return it.value(); -} - -QModelIndex QAbstractItemViewPrivate::indexForEditor(QWidget *editor) const -{ - QEditorIndexHash::const_iterator it = editorIndexHash.find(editor); - if (it == editorIndexHash.end()) - return QModelIndex(); - - return it.value(); -} - -void QAbstractItemViewPrivate::removeEditor(QWidget *editor) -{ - QEditorIndexHash::iterator it = editorIndexHash.find(editor); - if (it != editorIndexHash.end()) - { - indexEditorHash.remove(it.value()); - editorIndexHash.erase(it); - } -} - -void QAbstractItemViewPrivate::addEditor(const QModelIndex &index, QWidget *editor, bool isStatic) -{ - editorIndexHash.insert(editor, index); - indexEditorHash.insert(index, QEditorInfo(editor, isStatic)); -} - -bool QAbstractItemViewPrivate::sendDelegateEvent(const QModelIndex &index, QEvent *event) const -{ - Q_Q(const QAbstractItemView); - QModelIndex buddy = model->buddy(index); - QStyleOptionViewItemV4 options = viewOptionsV4(); - options.rect = q->visualRect(buddy); - options.state |= (buddy == q->currentIndex() ? QStyle::State_HasFocus : QStyle::State_None); - QAbstractItemDelegate *delegate = delegateForIndex(index); - return (event && delegate && delegate->editorEvent(event, model, options, buddy)); -} - -bool QAbstractItemViewPrivate::openEditor(const QModelIndex &index, QEvent *event) -{ - Q_Q(QAbstractItemView); - - QModelIndex buddy = model->buddy(index); - QStyleOptionViewItemV4 options = viewOptionsV4(); - options.rect = q->visualRect(buddy); - options.state |= (buddy == q->currentIndex() ? QStyle::State_HasFocus : QStyle::State_None); - - QWidget *w = editor(buddy, options); - if (!w) - return false; - - q->setState(QAbstractItemView::EditingState); - w->show(); - w->setFocus(); - - if (event) - QApplication::sendEvent(w->focusProxy() ? w->focusProxy() : w, event); - - return true; -} - -/* - \internal - - returns the pair QRect/QModelIndex that should be painted on the viewports's rect -*/ - -QItemViewPaintPairs QAbstractItemViewPrivate::draggablePaintPairs(const QModelIndexList &indexes, QRect *r) const -{ - Q_ASSERT(r); - Q_Q(const QAbstractItemView); - QRect &rect = *r; - const QRect viewportRect = viewport->rect(); - QItemViewPaintPairs ret; - for (int i = 0; i < indexes.count(); ++i) { - const QModelIndex &index = indexes.at(i); - const QRect current = q->visualRect(index); - if (current.intersects(viewportRect)) { - ret += qMakePair(current, index); - rect |= current; - } - } - rect &= viewportRect; - return ret; -} - -QPixmap QAbstractItemViewPrivate::renderToPixmap(const QModelIndexList &indexes, QRect *r) const -{ - Q_ASSERT(r); - QItemViewPaintPairs paintPairs = draggablePaintPairs(indexes, r); - if (paintPairs.isEmpty()) - return QPixmap(); - QPixmap pixmap(r->size()); - pixmap.fill(Qt::transparent); - QPainter painter(&pixmap); - QStyleOptionViewItemV4 option = viewOptionsV4(); - option.state |= QStyle::State_Selected; - for (int j = 0; j < paintPairs.count(); ++j) { - option.rect = paintPairs.at(j).first.translated(-r->topLeft()); - const QModelIndex ¤t = paintPairs.at(j).second; - delegateForIndex(current)->paint(&painter, option, current); - } - return pixmap; -} - -void QAbstractItemViewPrivate::selectAll(QItemSelectionModel::SelectionFlags command) -{ - if (!selectionModel) - return; - - QItemSelection selection; - QModelIndex tl = model->index(0, 0, root); - QModelIndex br = model->index(model->rowCount(root) - 1, - model->columnCount(root) - 1, - root); - selection.append(QItemSelectionRange(tl, br)); - selectionModel->select(selection, command); -} - -QModelIndexList QAbstractItemViewPrivate::selectedDraggableIndexes() const -{ - Q_Q(const QAbstractItemView); - QModelIndexList indexes = q->selectedIndexes(); - for(int i = indexes.count() - 1 ; i >= 0; --i) { - if (!isIndexDragEnabled(indexes.at(i))) - indexes.removeAt(i); - } - return indexes; -} - - -QT_END_NAMESPACE - -#include "moc_qabstractitemview.cpp" - -#endif // QT_NO_ITEMVIEWS |