--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gui/widgets/qcombobox.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,3249 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qcombobox.h"
+
+#ifndef QT_NO_COMBOBOX
+#include <qstylepainter.h>
+#include <qlineedit.h>
+#include <qapplication.h>
+#include <qdesktopwidget.h>
+#include <qlistview.h>
+#include <qtableview.h>
+#include <qitemdelegate.h>
+#include <qmap.h>
+#include <qmenu.h>
+#include <qevent.h>
+#include <qlayout.h>
+#include <qscrollbar.h>
+#include <qtreeview.h>
+#include <qheaderview.h>
+#ifndef QT_NO_IM
+#include "qinputcontext.h"
+#endif
+#include <private/qapplication_p.h>
+#include <private/qcombobox_p.h>
+#include <private/qabstractitemmodel_p.h>
+#include <private/qabstractscrollarea_p.h>
+#include <private/qsoftkeymanager_p.h>
+#include <qdebug.h>
+#ifdef Q_WS_X11
+#include <private/qt_x11_p.h>
+#endif
+#if defined(Q_WS_MAC) && !defined(QT_NO_EFFECTS) && !defined(QT_NO_STYLE_MAC)
+#include <private/qcore_mac_p.h>
+#include <QMacStyle>
+#include <private/qt_cocoa_helpers_mac_p.h>
+#endif
+#ifndef QT_NO_EFFECTS
+# include <private/qeffects_p.h>
+#endif
+QT_BEGIN_NAMESPACE
+
+QComboBoxPrivate::QComboBoxPrivate()
+ : QWidgetPrivate(),
+ model(0),
+ lineEdit(0),
+ container(0),
+ insertPolicy(QComboBox::InsertAtBottom),
+ sizeAdjustPolicy(QComboBox::AdjustToContentsOnFirstShow),
+ minimumContentsLength(0),
+ shownOnce(false),
+ autoCompletion(true),
+ duplicatesEnabled(false),
+ frame(true),
+ maxVisibleItems(10),
+ maxCount(INT_MAX),
+ modelColumn(0),
+ inserting(false),
+ arrowState(QStyle::State_None),
+ hoverControl(QStyle::SC_None),
+ autoCompletionCaseSensitivity(Qt::CaseInsensitive),
+ indexBeforeChange(-1)
+#ifndef QT_NO_COMPLETER
+ , completer(0)
+#endif
+{
+}
+
+QStyleOptionMenuItem QComboMenuDelegate::getStyleOption(const QStyleOptionViewItem &option,
+ const QModelIndex &index) const
+{
+ QStyleOptionMenuItem menuOption;
+ menuOption.palette = option.palette.resolve(QApplication::palette("QMenu"));
+ menuOption.state = QStyle::State_None;
+ if (mCombo->window()->isActiveWindow())
+ menuOption.state = QStyle::State_Active;
+ if ((option.state & QStyle::State_Enabled) && (index.model()->flags(index) & Qt::ItemIsEnabled))
+ menuOption.state |= QStyle::State_Enabled;
+ else
+ menuOption.palette.setCurrentColorGroup(QPalette::Disabled);
+ if (option.state & QStyle::State_Selected)
+ menuOption.state |= QStyle::State_Selected;
+ menuOption.checkType = QStyleOptionMenuItem::NonExclusive;
+ menuOption.checked = mCombo->currentIndex() == index.row();
+ if (QComboBoxDelegate::isSeparator(index))
+ menuOption.menuItemType = QStyleOptionMenuItem::Separator;
+ else
+ menuOption.menuItemType = QStyleOptionMenuItem::Normal;
+
+ QVariant variant = index.model()->data(index, Qt::DecorationRole);
+ switch (variant.type()) {
+ case QVariant::Icon:
+ menuOption.icon = qvariant_cast<QIcon>(variant);
+ break;
+ case QVariant::Color: {
+ static QPixmap pixmap(option.decorationSize);
+ pixmap.fill(qvariant_cast<QColor>(variant));
+ menuOption.icon = pixmap;
+ break; }
+ default:
+ menuOption.icon = qvariant_cast<QPixmap>(variant);
+ break;
+ }
+
+ menuOption.text = index.model()->data(index, Qt::DisplayRole).toString()
+ .replace(QLatin1Char('&'), QLatin1String("&&"));
+ menuOption.tabWidth = 0;
+ menuOption.maxIconWidth = option.decorationSize.width() + 4;
+ menuOption.menuRect = option.rect;
+ menuOption.rect = option.rect;
+
+ // Make sure fonts set on the combo box also overrides the font for the popup menu.
+ if (mCombo->testAttribute(Qt::WA_SetFont)
+ || mCombo->testAttribute(Qt::WA_MacSmallSize)
+ || mCombo->testAttribute(Qt::WA_MacMiniSize)
+ || mCombo->font() != qt_app_fonts_hash()->value("QComboBox", QFont()))
+ menuOption.font = mCombo->font();
+ else
+ menuOption.font = qt_app_fonts_hash()->value("QComboMenuItem", mCombo->font());
+
+ menuOption.fontMetrics = QFontMetrics(menuOption.font);
+
+ return menuOption;
+}
+
+#ifdef QT_KEYPAD_NAVIGATION
+void QComboBoxPrivate::_q_completerActivated()
+{
+ Q_Q(QComboBox);
+ if ( QApplication::keypadNavigationEnabled()
+ && q->isEditable()
+ && q->completer()
+ && q->completer()->completionMode() == QCompleter::UnfilteredPopupCompletion ) {
+ q->setEditFocus(false);
+ }
+}
+#endif
+
+void QComboBoxPrivate::updateArrow(QStyle::StateFlag state)
+{
+ Q_Q(QComboBox);
+ if (arrowState == state)
+ return;
+ arrowState = state;
+ QStyleOptionComboBox opt;
+ q->initStyleOption(&opt);
+ q->update(q->style()->subControlRect(QStyle::CC_ComboBox, &opt, QStyle::SC_ComboBoxArrow, q));
+}
+
+void QComboBoxPrivate::_q_modelReset()
+{
+ Q_Q(QComboBox);
+ if (lineEdit) {
+ lineEdit->setText(QString());
+ updateLineEditGeometry();
+ }
+ q->update();
+}
+
+void QComboBoxPrivate::_q_modelDestroyed()
+{
+ model = QAbstractItemModelPrivate::staticEmptyModel();
+}
+
+
+//Windows and KDE allows menus to cover the taskbar, while GNOME and Mac don't
+QRect QComboBoxPrivate::popupGeometry(int screen) const
+{
+#ifdef Q_WS_WIN
+ return QApplication::desktop()->screenGeometry(screen);
+#elif defined Q_WS_X11
+ if (X11->desktopEnvironment == DE_KDE)
+ return QApplication::desktop()->screenGeometry(screen);
+ else
+ return QApplication::desktop()->availableGeometry(screen);
+#else
+ return QApplication::desktop()->availableGeometry(screen);
+#endif
+}
+
+bool QComboBoxPrivate::updateHoverControl(const QPoint &pos)
+{
+
+ Q_Q(QComboBox);
+ QRect lastHoverRect = hoverRect;
+ QStyle::SubControl lastHoverControl = hoverControl;
+ bool doesHover = q->testAttribute(Qt::WA_Hover);
+ if (lastHoverControl != newHoverControl(pos) && doesHover) {
+ q->update(lastHoverRect);
+ q->update(hoverRect);
+ return true;
+ }
+ return !doesHover;
+}
+
+QStyle::SubControl QComboBoxPrivate::newHoverControl(const QPoint &pos)
+{
+ Q_Q(QComboBox);
+ QStyleOptionComboBox opt;
+ q->initStyleOption(&opt);
+ opt.subControls = QStyle::SC_All;
+ hoverControl = q->style()->hitTestComplexControl(QStyle::CC_ComboBox, &opt, pos, q);
+ hoverRect = (hoverControl != QStyle::SC_None)
+ ? q->style()->subControlRect(QStyle::CC_ComboBox, &opt, hoverControl, q)
+ : QRect();
+ return hoverControl;
+}
+
+/*
+ Computes a size hint based on the maximum width
+ for the items in the combobox.
+*/
+int QComboBoxPrivate::computeWidthHint() const
+{
+ Q_Q(const QComboBox);
+
+ int width = 0;
+ const int count = q->count();
+ const int iconWidth = q->iconSize().width() + 4;
+ const QFontMetrics &fontMetrics = q->fontMetrics();
+
+ for (int i = 0; i < count; ++i) {
+ const int textWidth = fontMetrics.width(q->itemText(i));
+ if (q->itemIcon(i).isNull())
+ width = (qMax(width, textWidth));
+ else
+ width = (qMax(width, textWidth + iconWidth));
+ }
+
+ QStyleOptionComboBox opt;
+ q->initStyleOption(&opt);
+ QSize tmp(width, 0);
+ tmp = q->style()->sizeFromContents(QStyle::CT_ComboBox, &opt, tmp, q);
+ return tmp.width();
+}
+
+QSize QComboBoxPrivate::recomputeSizeHint(QSize &sh) const
+{
+ Q_Q(const QComboBox);
+ if (!sh.isValid()) {
+ bool hasIcon = sizeAdjustPolicy == QComboBox::AdjustToMinimumContentsLengthWithIcon ? true : false;
+ int count = q->count();
+ QSize iconSize = q->iconSize();
+ const QFontMetrics &fm = q->fontMetrics();
+
+ // text width
+ if (&sh == &sizeHint || minimumContentsLength == 0) {
+ switch (sizeAdjustPolicy) {
+ case QComboBox::AdjustToContents:
+ case QComboBox::AdjustToContentsOnFirstShow:
+ if (count == 0) {
+ sh.rwidth() = 7 * fm.width(QLatin1Char('x'));
+ } else {
+ for (int i = 0; i < count; ++i) {
+ if (!q->itemIcon(i).isNull()) {
+ hasIcon = true;
+ sh.setWidth(qMax(sh.width(), fm.boundingRect(q->itemText(i)).width() + iconSize.width() + 4));
+ } else {
+ sh.setWidth(qMax(sh.width(), fm.boundingRect(q->itemText(i)).width()));
+ }
+ }
+ }
+ break;
+ case QComboBox::AdjustToMinimumContentsLength:
+ for (int i = 0; i < count && !hasIcon; ++i)
+ hasIcon = !q->itemIcon(i).isNull();
+ default:
+ ;
+ }
+ } else {
+ for (int i = 0; i < count && !hasIcon; ++i)
+ hasIcon = !q->itemIcon(i).isNull();
+ }
+ if (minimumContentsLength > 0)
+ sh.setWidth(qMax(sh.width(), minimumContentsLength * fm.width(QLatin1Char('X')) + (hasIcon ? iconSize.width() + 4 : 0)));
+
+
+ // height
+ sh.setHeight(qMax(fm.lineSpacing(), 14) + 2);
+ if (hasIcon) {
+ sh.setHeight(qMax(sh.height(), iconSize.height() + 2));
+ }
+
+ // add style and strut values
+ QStyleOptionComboBox opt;
+ q->initStyleOption(&opt);
+ sh = q->style()->sizeFromContents(QStyle::CT_ComboBox, &opt, sh, q);
+ }
+ return sh.expandedTo(QApplication::globalStrut());
+}
+
+void QComboBoxPrivate::adjustComboBoxSize()
+{
+ viewContainer()->adjustSizeTimer.start(20, container);
+}
+
+void QComboBoxPrivate::updateLayoutDirection()
+{
+ Q_Q(const QComboBox);
+ QStyleOptionComboBox opt;
+ q->initStyleOption(&opt);
+ Qt::LayoutDirection dir = Qt::LayoutDirection(
+ q->style()->styleHint(QStyle::SH_ComboBox_LayoutDirection, &opt, q));
+ if (lineEdit)
+ lineEdit->setLayoutDirection(dir);
+ if (container)
+ container->setLayoutDirection(dir);
+}
+
+
+void QComboBoxPrivateContainer::timerEvent(QTimerEvent *timerEvent)
+{
+ if (timerEvent->timerId() == adjustSizeTimer.timerId()) {
+ adjustSizeTimer.stop();
+ if (combo->sizeAdjustPolicy() == QComboBox::AdjustToContents) {
+ combo->adjustSize();
+ combo->update();
+ }
+ }
+}
+
+void QComboBoxPrivateContainer::resizeEvent(QResizeEvent *e)
+{
+ QStyleOptionComboBox opt = comboStyleOption();
+ if (combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo)) {
+ QStyleOption myOpt;
+ myOpt.initFrom(this);
+ QStyleHintReturnMask mask;
+ if (combo->style()->styleHint(QStyle::SH_Menu_Mask, &myOpt, this, &mask)) {
+ setMask(mask.region);
+ }
+ } else {
+ clearMask();
+ }
+ QFrame::resizeEvent(e);
+}
+
+void QComboBoxPrivateContainer::leaveEvent(QEvent *)
+{
+// On Mac using the Mac style we want to clear the selection
+// when the mouse moves outside the popup.
+#ifdef Q_WS_MAC
+ QStyleOptionComboBox opt = comboStyleOption();
+ if (combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo))
+ view->clearSelection();
+#endif
+}
+
+QComboBoxPrivateContainer::QComboBoxPrivateContainer(QAbstractItemView *itemView, QComboBox *parent)
+ : QFrame(parent, Qt::Popup), combo(parent), view(0), top(0), bottom(0)
+{
+ // we need the combobox and itemview
+ Q_ASSERT(parent);
+ Q_ASSERT(itemView);
+
+ setAttribute(Qt::WA_WindowPropagation);
+ setAttribute(Qt::WA_X11NetWmWindowTypeCombo);
+
+ // setup container
+ blockMouseReleaseTimer.setSingleShot(true);
+
+ // we need a vertical layout
+ QBoxLayout *layout = new QBoxLayout(QBoxLayout::TopToBottom, this);
+ layout->setSpacing(0);
+ layout->setMargin(0);
+
+#ifdef QT_SOFTKEYS_ENABLED
+ selectAction = QSoftKeyManager::createKeyedAction(QSoftKeyManager::SelectSoftKey, Qt::Key_Select, this);
+ cancelAction = QSoftKeyManager::createKeyedAction(QSoftKeyManager::CancelSoftKey, Qt::Key_Escape, this);
+ addAction(selectAction);
+ addAction(cancelAction);
+#endif
+
+ // set item view
+ setItemView(itemView);
+
+ // add scroller arrows if style needs them
+ QStyleOptionComboBox opt = comboStyleOption();
+ const bool usePopup = combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo);
+ if (usePopup) {
+ top = new QComboBoxPrivateScroller(QAbstractSlider::SliderSingleStepSub, this);
+ bottom = new QComboBoxPrivateScroller(QAbstractSlider::SliderSingleStepAdd, this);
+ top->hide();
+ bottom->hide();
+ } else {
+ setLineWidth(1);
+ }
+
+ setFrameStyle(combo->style()->styleHint(QStyle::SH_ComboBox_PopupFrameStyle, &opt, combo));
+
+ if (top) {
+ layout->insertWidget(0, top);
+ connect(top, SIGNAL(doScroll(int)), this, SLOT(scrollItemView(int)));
+ }
+ if (bottom) {
+ layout->addWidget(bottom);
+ connect(bottom, SIGNAL(doScroll(int)), this, SLOT(scrollItemView(int)));
+ }
+
+ // Some styles (Mac) have a margin at the top and bottom of the popup.
+ layout->insertSpacing(0, 0);
+ layout->addSpacing(0);
+ updateTopBottomMargin();
+}
+
+void QComboBoxPrivateContainer::scrollItemView(int action)
+{
+#ifndef QT_NO_SCROLLBAR
+ if (view->verticalScrollBar())
+ view->verticalScrollBar()->triggerAction(static_cast<QAbstractSlider::SliderAction>(action));
+#endif
+}
+
+/*
+ Hides or shows the scrollers when we emulate a popupmenu
+*/
+void QComboBoxPrivateContainer::updateScrollers()
+{
+#ifndef QT_NO_SCROLLBAR
+ if (!top || !bottom)
+ return;
+
+ if (isVisible() == false)
+ return;
+
+ QStyleOptionComboBox opt = comboStyleOption();
+ if (combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo) &&
+ view->verticalScrollBar()->minimum() < view->verticalScrollBar()->maximum()) {
+
+ bool needTop = view->verticalScrollBar()->value()
+ > (view->verticalScrollBar()->minimum() + spacing());
+ bool needBottom = view->verticalScrollBar()->value()
+ < (view->verticalScrollBar()->maximum() - spacing()*2);
+ if (needTop)
+ top->show();
+ else
+ top->hide();
+ if (needBottom)
+ bottom->show();
+ else
+ bottom->hide();
+ } else {
+ top->hide();
+ bottom->hide();
+ }
+#endif // QT_NO_SCROLLBAR
+}
+
+/*
+ Cleans up when the view is destroyed.
+*/
+void QComboBoxPrivateContainer::viewDestroyed()
+{
+ view = 0;
+ setItemView(new QComboBoxListView());
+}
+
+/*
+ Sets currentIndex on entered if the LeftButton is not pressed. This
+ means that if mouseTracking(...) is on, we setCurrentIndex and select
+ even when LeftButton is not pressed.
+*/
+void QComboBoxPrivateContainer::setCurrentIndex(const QModelIndex &index)
+{
+ if (QComboBoxDelegate::isSeparator(index))
+ return;
+ view->setCurrentIndex(index);
+}
+
+/*
+ Returns the item view used for the combobox popup.
+*/
+QAbstractItemView *QComboBoxPrivateContainer::itemView() const
+{
+ return view;
+}
+
+/*!
+ Sets the item view to be used for the combobox popup.
+*/
+void QComboBoxPrivateContainer::setItemView(QAbstractItemView *itemView)
+{
+ Q_ASSERT(itemView);
+
+ // clean up old one
+ if (view) {
+ view->removeEventFilter(this);
+ view->viewport()->removeEventFilter(this);
+#ifndef QT_NO_SCROLLBAR
+ disconnect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
+ this, SLOT(updateScrollers()));
+ disconnect(view->verticalScrollBar(), SIGNAL(rangeChanged(int,int)),
+ this, SLOT(updateScrollers()));
+#endif
+ disconnect(view, SIGNAL(entered(QModelIndex)),
+ this, SLOT(setCurrentIndex(QModelIndex)));
+ disconnect(view, SIGNAL(destroyed()),
+ this, SLOT(viewDestroyed()));
+
+ delete view;
+ view = 0;
+ }
+
+ // setup the item view
+ view = itemView;
+ view->setParent(this);
+ view->setAttribute(Qt::WA_MacShowFocusRect, false);
+ qobject_cast<QBoxLayout*>(layout())->insertWidget(top ? 2 : 0, view);
+ view->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored);
+ view->installEventFilter(this);
+ view->viewport()->installEventFilter(this);
+ view->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+ QStyleOptionComboBox opt = comboStyleOption();
+ const bool usePopup = combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo);
+#ifndef QT_NO_SCROLLBAR
+ if (usePopup)
+ view->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+#endif
+ if (combo->style()->styleHint(QStyle::SH_ComboBox_ListMouseTracking, &opt, combo) ||
+ usePopup) {
+ view->setMouseTracking(true);
+ }
+ view->setSelectionMode(QAbstractItemView::SingleSelection);
+ view->setFrameStyle(QFrame::NoFrame);
+ view->setLineWidth(0);
+ view->setEditTriggers(QAbstractItemView::NoEditTriggers);
+#ifndef QT_NO_SCROLLBAR
+ connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
+ this, SLOT(updateScrollers()));
+ connect(view->verticalScrollBar(), SIGNAL(rangeChanged(int,int)),
+ this, SLOT(updateScrollers()));
+#endif
+ connect(view, SIGNAL(entered(QModelIndex)),
+ this, SLOT(setCurrentIndex(QModelIndex)));
+ connect(view, SIGNAL(destroyed()),
+ this, SLOT(viewDestroyed()));
+}
+
+/*!
+ Returns the spacing between the items in the view.
+*/
+int QComboBoxPrivateContainer::spacing() const
+{
+ QListView *lview = qobject_cast<QListView*>(view);
+ if (lview)
+ return lview->spacing();
+#ifndef QT_NO_TABLEVIEW
+ QTableView *tview = qobject_cast<QTableView*>(view);
+ if (tview)
+ return tview->showGrid() ? 1 : 0;
+#endif
+ return 0;
+}
+
+void QComboBoxPrivateContainer::updateTopBottomMargin()
+{
+ if (!layout() || layout()->count() < 1)
+ return;
+
+ QBoxLayout *boxLayout = qobject_cast<QBoxLayout *>(layout());
+ if (!boxLayout)
+ return;
+
+ const QStyleOptionComboBox opt = comboStyleOption();
+ const bool usePopup = combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo);
+ const int margin = usePopup ? combo->style()->pixelMetric(QStyle::PM_MenuVMargin, &opt, combo) : 0;
+
+ QSpacerItem *topSpacer = boxLayout->itemAt(0)->spacerItem();
+ if (topSpacer)
+ topSpacer->changeSize(0, margin, QSizePolicy::Minimum, QSizePolicy::Fixed);
+
+ QSpacerItem *bottomSpacer = boxLayout->itemAt(boxLayout->count() - 1)->spacerItem();
+ if (bottomSpacer && bottomSpacer != topSpacer)
+ bottomSpacer->changeSize(0, margin, QSizePolicy::Minimum, QSizePolicy::Fixed);
+
+ boxLayout->invalidate();
+}
+
+void QComboBoxPrivateContainer::changeEvent(QEvent *e)
+{
+ if (e->type() == QEvent::StyleChange) {
+ QStyleOptionComboBox opt = comboStyleOption();
+ view->setMouseTracking(combo->style()->styleHint(QStyle::SH_ComboBox_ListMouseTracking, &opt, combo) ||
+ combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo));
+ setFrameStyle(combo->style()->styleHint(QStyle::SH_ComboBox_PopupFrameStyle, &opt, combo));
+ }
+ QWidget::changeEvent(e);
+}
+
+
+bool QComboBoxPrivateContainer::eventFilter(QObject *o, QEvent *e)
+{
+ switch (e->type()) {
+ case QEvent::ShortcutOverride:
+ switch (static_cast<QKeyEvent*>(e)->key()) {
+ case Qt::Key_Enter:
+ case Qt::Key_Return:
+#ifdef QT_KEYPAD_NAVIGATION
+ case Qt::Key_Select:
+#endif
+ if (view->currentIndex().isValid() && (view->currentIndex().flags() & Qt::ItemIsEnabled) ) {
+ combo->hidePopup();
+ emit itemSelected(view->currentIndex());
+ }
+ return true;
+ case Qt::Key_Down:
+ if (!(static_cast<QKeyEvent*>(e)->modifiers() & Qt::AltModifier))
+ break;
+ // fall through
+ case Qt::Key_F4:
+ case Qt::Key_Escape:
+ combo->hidePopup();
+ return true;
+ default:
+ break;
+ }
+ break;
+ case QEvent::MouseMove: {
+ if (isVisible()) {
+ QMouseEvent *m = static_cast<QMouseEvent *>(e);
+ QWidget *widget = static_cast<QWidget *>(o);
+ QPoint vector = widget->mapToGlobal(m->pos()) - initialClickPosition;
+ if (vector.manhattanLength() > 9 && blockMouseReleaseTimer.isActive())
+ blockMouseReleaseTimer.stop();
+ }
+ break;
+ }
+ case QEvent::MouseButtonRelease: {
+ QMouseEvent *m = static_cast<QMouseEvent *>(e);
+ if (isVisible() && view->rect().contains(m->pos()) && view->currentIndex().isValid()
+ && !blockMouseReleaseTimer.isActive()
+ && (view->currentIndex().flags() & Qt::ItemIsEnabled)
+ && (view->currentIndex().flags() & Qt::ItemIsSelectable)) {
+ combo->hidePopup();
+ emit itemSelected(view->currentIndex());
+ return true;
+ }
+ break;
+ }
+ default:
+ break;
+ }
+ return QFrame::eventFilter(o, e);
+}
+
+void QComboBoxPrivateContainer::showEvent(QShowEvent *)
+{
+ combo->update();
+}
+
+void QComboBoxPrivateContainer::hideEvent(QHideEvent *)
+{
+ emit resetButton();
+ combo->update();
+}
+
+void QComboBoxPrivateContainer::mousePressEvent(QMouseEvent *e)
+{
+
+ QStyleOptionComboBox opt = comboStyleOption();
+ opt.subControls = QStyle::SC_All;
+ opt.activeSubControls = QStyle::SC_ComboBoxArrow;
+ QStyle::SubControl sc = combo->style()->hitTestComplexControl(QStyle::CC_ComboBox, &opt,
+ combo->mapFromGlobal(e->globalPos()),
+ combo);
+ if ((combo->isEditable() && sc == QStyle::SC_ComboBoxArrow)
+ || (!combo->isEditable() && sc != QStyle::SC_None))
+ setAttribute(Qt::WA_NoMouseReplay);
+ combo->hidePopup();
+}
+
+void QComboBoxPrivateContainer::mouseReleaseEvent(QMouseEvent *e)
+{
+ Q_UNUSED(e);
+ if (!blockMouseReleaseTimer.isActive()){
+ combo->hidePopup();
+ emit resetButton();
+ }
+}
+
+QStyleOptionComboBox QComboBoxPrivateContainer::comboStyleOption() const
+{
+ // ### This should use QComboBox's initStyleOption(), but it's protected
+ // perhaps, we could cheat by having the QCombo private instead?
+ QStyleOptionComboBox opt;
+ opt.initFrom(combo);
+ opt.subControls = QStyle::SC_All;
+ opt.activeSubControls = QStyle::SC_None;
+ opt.editable = combo->isEditable();
+ return opt;
+}
+
+/*!
+ \enum QComboBox::InsertPolicy
+
+ This enum specifies what the QComboBox should do when a new string is
+ entered by the user.
+
+ \value NoInsert The string will not be inserted into the combobox.
+ \value InsertAtTop The string will be inserted as the first item in the combobox.
+ \value InsertAtCurrent The current item will be \e replaced by the string.
+ \value InsertAtBottom The string will be inserted after the last item in the combobox.
+ \value InsertAfterCurrent The string is inserted after the current item in the combobox.
+ \value InsertBeforeCurrent The string is inserted before the current item in the combobox.
+ \value InsertAlphabetically The string is inserted in the alphabetic order in the combobox.
+ \omitvalue NoInsertion
+ \omitvalue AtTop
+ \omitvalue AtCurrent
+ \omitvalue AtBottom
+ \omitvalue AfterCurrent
+ \omitvalue BeforeCurrent
+*/
+
+/*!
+ \enum QComboBox::SizeAdjustPolicy
+
+ This enum specifies how the size hint of the QComboBox should
+ adjust when new content is added or content changes.
+
+ \value AdjustToContents The combobox will always adjust to the contents
+ \value AdjustToContentsOnFirstShow The combobox will adjust to its contents the first time it is shown.
+ \value AdjustToMinimumContentsLength Use AdjustToContents or AdjustToContentsOnFirstShow instead.
+ \value AdjustToMinimumContentsLengthWithIcon The combobox will adjust to \l minimumContentsLength plus space for an icon. For performance reasons use this policy on large models.
+*/
+
+/*!
+ \fn void QComboBox::activated(int index)
+
+ This signal is sent when the user chooses an item in the combobox.
+ The item's \a index is passed. Note that this signal is sent even
+ when the choice is not changed. If you need to know when the
+ choice actually changes, use signal currentIndexChanged().
+
+*/
+
+/*!
+ \fn void QComboBox::activated(const QString &text)
+
+ This signal is sent when the user chooses an item in the combobox.
+ The item's \a text is passed. Note that this signal is sent even
+ when the choice is not changed. If you need to know when the
+ choice actually changes, use signal currentIndexChanged().
+
+*/
+
+/*!
+ \fn void QComboBox::highlighted(int index)
+
+ This signal is sent when an item in the combobox popup list is
+ highlighted by the user. The item's \a index is passed.
+*/
+
+/*!
+ \fn void QComboBox::highlighted(const QString &text)
+
+ This signal is sent when an item in the combobox popup list is
+ highlighted by the user. The item's \a text is passed.
+*/
+
+/*!
+ \fn void QComboBox::currentIndexChanged(int index)
+ \since 4.1
+
+ This signal is sent whenever the currentIndex in the combobox
+ changes either through user interaction or programmatically. The
+ item's \a index is passed or -1 if the combobox becomes empty or the
+ currentIndex was reset.
+*/
+
+/*!
+ \fn void QComboBox::currentIndexChanged(const QString &text)
+ \since 4.1
+
+ This signal is sent whenever the currentIndex in the combobox
+ changes either through user interaction or programmatically. The
+ item's \a text is passed.
+*/
+
+/*!
+ Constructs a combobox with the given \a parent, using the default
+ model QStandardItemModel.
+*/
+QComboBox::QComboBox(QWidget *parent)
+ : QWidget(*new QComboBoxPrivate(), parent, 0)
+{
+ Q_D(QComboBox);
+ d->init();
+}
+
+/*!
+ \internal
+*/
+QComboBox::QComboBox(QComboBoxPrivate &dd, QWidget *parent)
+ : QWidget(dd, parent, 0)
+{
+ Q_D(QComboBox);
+ d->init();
+}
+
+#ifdef QT3_SUPPORT
+/*!
+ Use one of the constructors that doesn't take the \a name
+ argument and then use setObjectName() instead.
+*/
+QComboBox::QComboBox(QWidget *parent, const char *name)
+ : QWidget(*new QComboBoxPrivate(), parent, 0)
+{
+ Q_D(QComboBox);
+ d->init();
+ setObjectName(QString::fromAscii(name));
+}
+
+/*!
+ Use one of the constructors that doesn't take the \a name
+ argument and then use setObjectName() instead.
+*/
+QComboBox::QComboBox(bool rw, QWidget *parent, const char *name)
+ : QWidget(*new QComboBoxPrivate(), parent, 0)
+{
+ Q_D(QComboBox);
+ d->init();
+ setEditable(rw);
+ setObjectName(QString::fromAscii(name));
+}
+
+#endif //QT3_SUPPORT
+
+/*!
+ \class QComboBox
+ \brief The QComboBox widget is a combined button and popup list.
+
+ \ingroup basicwidgets
+
+
+ A QComboBox provides a means of presenting a list of options to the user
+ in a way that takes up the minimum amount of screen space.
+
+ A combobox is a selection widget that displays the current item,
+ and can pop up a list of selectable items. A combobox may be editable,
+ allowing the user to modify each item in the list.
+
+ Comboboxes can contain pixmaps as well as strings; the
+ insertItem() and setItemText() functions are suitably overloaded.
+ For editable comboboxes, the function clearEditText() is provided,
+ to clear the displayed string without changing the combobox's
+ contents.
+
+ There are two signals emitted if the current item of a combobox
+ changes, currentIndexChanged() and activated().
+ currentIndexChanged() is always emitted regardless if the change
+ was done programmatically or by user interaction, while
+ activated() is only emitted when the change is caused by user
+ interaction. The highlighted() signal is emitted when the user
+ highlights an item in the combobox popup list. All three signals
+ exist in two versions, one with a QString argument and one with an
+ \c int argument. If the user selectes or highlights a pixmap, only
+ the \c int signals are emitted. Whenever the text of an editable
+ combobox is changed the editTextChanged() signal is emitted.
+
+ When the user enters a new string in an editable combobox, the
+ widget may or may not insert it, and it can insert it in several
+ locations. The default policy is is \l AtBottom but you can change
+ this using setInsertPolicy().
+
+ It is possible to constrain the input to an editable combobox
+ using QValidator; see setValidator(). By default, any input is
+ accepted.
+
+ A combobox can be populated using the insert functions,
+ insertItem() and insertItems() for example. Items can be
+ changed with setItemText(). An item can be removed with
+ removeItem() and all items can be removed with clear(). The text
+ of the current item is returned by currentText(), and the text of
+ a numbered item is returned with text(). The current item can be
+ set with setCurrentIndex(). The number of items in the combobox is
+ returned by count(); the maximum number of items can be set with
+ setMaxCount(). You can allow editing using setEditable(). For
+ editable comboboxes you can set auto-completion using
+ setCompleter() and whether or not the user can add duplicates
+ is set with setDuplicatesEnabled().
+
+ QComboBox uses the \l{Model/View Programming}{model/view
+ framework} for its popup list and to store its items. By default
+ a QStandardItemModel stores the items and a QListView subclass
+ displays the popuplist. You can access the model and view directly
+ (with model() and view()), but QComboBox also provides functions
+ to set and get item data (e.g., setItemData() and itemText()). You
+ can also set a new model and view (with setModel() and setView()).
+ For the text and icon in the combobox label, the data in the model
+ that has the Qt::DisplayRole and Qt::DecorationRole is used.
+
+ \image qstyle-comboboxes.png Comboboxes in the different built-in styles.
+
+ \sa QLineEdit, QSpinBox, QRadioButton, QButtonGroup,
+ {fowler}{GUI Design Handbook: Combo Box, Drop-Down List Box}
+*/
+
+void QComboBoxPrivate::init()
+{
+ Q_Q(QComboBox);
+ q->setFocusPolicy(Qt::WheelFocus);
+ q->setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed,
+ QSizePolicy::ComboBox));
+ setLayoutItemMargins(QStyle::SE_ComboBoxLayoutItem);
+ q->setModel(new QStandardItemModel(0, 1, q));
+ q->setAttribute(Qt::WA_InputMethodEnabled);
+}
+
+QComboBoxPrivateContainer* QComboBoxPrivate::viewContainer()
+{
+ if (container)
+ return container;
+
+ Q_Q(QComboBox);
+ container = new QComboBoxPrivateContainer(new QComboBoxListView(q), q);
+ container->itemView()->setModel(model);
+ container->itemView()->setTextElideMode(Qt::ElideMiddle);
+ updateDelegate(true);
+ updateLayoutDirection();
+ updateViewContainerPaletteAndOpacity();
+ QObject::connect(container, SIGNAL(itemSelected(QModelIndex)),
+ q, SLOT(_q_itemSelected(QModelIndex)));
+ QObject::connect(container->itemView()->selectionModel(),
+ SIGNAL(currentChanged(QModelIndex,QModelIndex)),
+ q, SLOT(_q_emitHighlighted(QModelIndex)));
+ QObject::connect(container, SIGNAL(resetButton()), q, SLOT(_q_resetButton()));
+ return container;
+}
+
+
+void QComboBoxPrivate::_q_resetButton()
+{
+ updateArrow(QStyle::State_None);
+}
+
+void QComboBoxPrivate::_q_dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight)
+{
+ Q_Q(QComboBox);
+ if (inserting || topLeft.parent() != root)
+ return;
+
+ if (sizeAdjustPolicy == QComboBox::AdjustToContents) {
+ sizeHint = QSize();
+ adjustComboBoxSize();
+ q->updateGeometry();
+ }
+
+ if (currentIndex.row() >= topLeft.row() && currentIndex.row() <= bottomRight.row()) {
+ if (lineEdit) {
+ lineEdit->setText(q->itemText(currentIndex.row()));
+ updateLineEditGeometry();
+ }
+ q->update();
+ }
+}
+
+void QComboBoxPrivate::_q_rowsAboutToBeInserted(const QModelIndex & parent,
+ int /*start*/, int /*end*/)
+{
+ if (parent != root)
+ return;
+ indexBeforeChange = currentIndex.row();
+}
+
+void QComboBoxPrivate::_q_rowsInserted(const QModelIndex &parent, int start, int end)
+{
+ Q_Q(QComboBox);
+ if (inserting || parent != root)
+ return;
+
+ if (sizeAdjustPolicy == QComboBox::AdjustToContents) {
+ sizeHint = QSize();
+ adjustComboBoxSize();
+ q->updateGeometry();
+ }
+
+ // set current index if combo was previously empty
+ if (start == 0 && (end - start + 1) == q->count() && !currentIndex.isValid()) {
+ q->setCurrentIndex(0);
+ // need to emit changed if model updated index "silently"
+ } else if (currentIndex.row() != indexBeforeChange) {
+ q->update();
+ _q_emitCurrentIndexChanged(currentIndex);
+ }
+}
+
+void QComboBoxPrivate::_q_rowsAboutToBeRemoved(const QModelIndex &parent, int /*start*/, int /*end*/)
+{
+ if (parent != root)
+ return;
+
+ indexBeforeChange = currentIndex.row();
+}
+
+void QComboBoxPrivate::_q_rowsRemoved(const QModelIndex &parent, int /*start*/, int /*end*/)
+{
+ Q_Q(QComboBox);
+ if (parent != root)
+ return;
+
+ if (sizeAdjustPolicy == QComboBox::AdjustToContents) {
+ sizeHint = QSize();
+ adjustComboBoxSize();
+ q->updateGeometry();
+ }
+
+ // model has changed the currentIndex
+ if (currentIndex.row() != indexBeforeChange) {
+ if (!currentIndex.isValid() && q->count()) {
+ q->setCurrentIndex(qMin(q->count() - 1, qMax(indexBeforeChange, 0)));
+ return;
+ }
+ if (lineEdit) {
+ lineEdit->setText(q->itemText(currentIndex.row()));
+ updateLineEditGeometry();
+ }
+ q->update();
+ _q_emitCurrentIndexChanged(currentIndex);
+ }
+}
+
+
+void QComboBoxPrivate::updateViewContainerPaletteAndOpacity()
+{
+ if (!container)
+ return;
+ Q_Q(QComboBox);
+ QStyleOptionComboBox opt;
+ q->initStyleOption(&opt);
+#ifndef QT_NO_MENU
+ if (q->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, q)) {
+ QMenu menu;
+ menu.ensurePolished();
+ container->setPalette(menu.palette());
+ container->setWindowOpacity(menu.windowOpacity());
+ } else
+#endif
+ {
+ container->setPalette(q->palette());
+ container->setWindowOpacity(1.0);
+ }
+}
+
+/*!
+ Initialize \a option with the values from this QComboBox. This method
+ is useful for subclasses when they need a QStyleOptionComboBox, but don't want
+ to fill in all the information themselves.
+
+ \sa QStyleOption::initFrom()
+*/
+void QComboBox::initStyleOption(QStyleOptionComboBox *option) const
+{
+ if (!option)
+ return;
+
+ Q_D(const QComboBox);
+ option->initFrom(this);
+ option->editable = isEditable();
+ option->frame = d->frame;
+ if (hasFocus() && !option->editable)
+ option->state |= QStyle::State_Selected;
+ option->subControls = QStyle::SC_All;
+ if (d->arrowState == QStyle::State_Sunken) {
+ option->activeSubControls = QStyle::SC_ComboBoxArrow;
+ option->state |= d->arrowState;
+ } else {
+ option->activeSubControls = d->hoverControl;
+ }
+ if (d->currentIndex.isValid()) {
+ option->currentText = currentText();
+ option->currentIcon = d->itemIcon(d->currentIndex);
+ }
+ option->iconSize = iconSize();
+ if (d->container && d->container->isVisible())
+ option->state |= QStyle::State_On;
+}
+
+void QComboBoxPrivate::updateLineEditGeometry()
+{
+ if (!lineEdit)
+ return;
+
+ Q_Q(QComboBox);
+ QStyleOptionComboBox opt;
+ q->initStyleOption(&opt);
+ QRect editRect = q->style()->subControlRect(QStyle::CC_ComboBox, &opt,
+ QStyle::SC_ComboBoxEditField, q);
+ if (!q->itemIcon(q->currentIndex()).isNull()) {
+ QRect comboRect(editRect);
+ editRect.setWidth(editRect.width() - q->iconSize().width() - 4);
+ editRect = QStyle::alignedRect(q->layoutDirection(), Qt::AlignRight,
+ editRect.size(), comboRect);
+ }
+ lineEdit->setGeometry(editRect);
+}
+
+void QComboBoxPrivate::_q_returnPressed()
+{
+ Q_Q(QComboBox);
+ if (lineEdit && !lineEdit->text().isEmpty()) {
+ if (q->count() >= maxCount && !(this->insertPolicy == QComboBox::InsertAtCurrent))
+ return;
+ lineEdit->deselect();
+ lineEdit->end(false);
+ QString text = lineEdit->text();
+ // check for duplicates (if not enabled) and quit
+ int index = -1;
+ if (!duplicatesEnabled) {
+ // Base how duplicates are determined on the autocompletion case sensitivity
+ Qt::MatchFlags flags = Qt::MatchFixedString;
+#ifndef QT_NO_COMPLETER
+ if (!lineEdit->completer() || lineEdit->completer()->caseSensitivity() == Qt::CaseSensitive)
+#endif
+ flags |= Qt::MatchCaseSensitive;
+ index = q->findText(text, flags);
+ if (index != -1) {
+ q->setCurrentIndex(index);
+ emitActivated(currentIndex);
+ return;
+ }
+ }
+ switch (insertPolicy) {
+ case QComboBox::InsertAtTop:
+ index = 0;
+ break;
+ case QComboBox::InsertAtBottom:
+ index = q->count();
+ break;
+ case QComboBox::InsertAtCurrent:
+ case QComboBox::InsertAfterCurrent:
+ case QComboBox::InsertBeforeCurrent:
+ if (!q->count() || !currentIndex.isValid())
+ index = 0;
+ else if (insertPolicy == QComboBox::InsertAtCurrent)
+ q->setItemText(q->currentIndex(), text);
+ else if (insertPolicy == QComboBox::InsertAfterCurrent)
+ index = q->currentIndex() + 1;
+ else if (insertPolicy == QComboBox::InsertBeforeCurrent)
+ index = q->currentIndex();
+ break;
+ case QComboBox::InsertAlphabetically:
+ index = 0;
+ for (int i=0; i< q->count(); i++, index++ ) {
+ if (text.toLower() < q->itemText(i).toLower())
+ break;
+ }
+ break;
+ case QComboBox::NoInsert:
+ default:
+ break;
+ }
+ if (index >= 0) {
+ q->insertItem(index, text);
+ q->setCurrentIndex(index);
+ emitActivated(currentIndex);
+ }
+ }
+}
+
+void QComboBoxPrivate::_q_itemSelected(const QModelIndex &item)
+{
+ Q_Q(QComboBox);
+ if (item != currentIndex) {
+ setCurrentIndex(item);
+ } else if (lineEdit) {
+ lineEdit->selectAll();
+ lineEdit->setText(q->itemText(currentIndex.row()));
+ }
+ emitActivated(currentIndex);
+}
+
+void QComboBoxPrivate::emitActivated(const QModelIndex &index)
+{
+ Q_Q(QComboBox);
+ if (!index.isValid())
+ return;
+ QString text(itemText(index));
+ emit q->activated(index.row());
+ emit q->activated(text);
+}
+
+void QComboBoxPrivate::_q_emitHighlighted(const QModelIndex &index)
+{
+ Q_Q(QComboBox);
+ if (!index.isValid())
+ return;
+ QString text(itemText(index));
+ emit q->highlighted(index.row());
+ emit q->highlighted(text);
+}
+
+void QComboBoxPrivate::_q_emitCurrentIndexChanged(const QModelIndex &index)
+{
+ Q_Q(QComboBox);
+ emit q->currentIndexChanged(index.row());
+ emit q->currentIndexChanged(itemText(index));
+}
+
+QString QComboBoxPrivate::itemText(const QModelIndex &index) const
+{
+ return index.isValid() ? model->data(index, itemRole()).toString() : QString();
+}
+
+int QComboBoxPrivate::itemRole() const
+{
+ return q_func()->isEditable() ? Qt::EditRole : Qt::DisplayRole;
+}
+
+/*!
+ Destroys the combobox.
+*/
+QComboBox::~QComboBox()
+{
+ // ### check delegateparent and delete delegate if us?
+ Q_D(QComboBox);
+
+ QT_TRY {
+ disconnect(d->model, SIGNAL(destroyed()),
+ this, SLOT(_q_modelDestroyed()));
+ } QT_CATCH(...) {
+ ; // objects can't throw in destructor
+ }
+}
+
+/*!
+ \property QComboBox::maxVisibleItems
+ \brief the maximum allowed size on screen of the combo box, measured in items
+
+ By default, this property has a value of 10.
+
+ \note This property is ignored for non-editable comboboxes in Mac style.
+*/
+int QComboBox::maxVisibleItems() const
+{
+ Q_D(const QComboBox);
+ return d->maxVisibleItems;
+}
+
+void QComboBox::setMaxVisibleItems(int maxItems)
+{
+ Q_D(QComboBox);
+ if (maxItems < 0) {
+ qWarning("QComboBox::setMaxVisibleItems: "
+ "Invalid max visible items (%d) must be >= 0", maxItems);
+ return;
+ }
+ d->maxVisibleItems = maxItems;
+}
+
+/*!
+ \property QComboBox::count
+ \brief the number of items in the combobox
+
+ By default, for an empty combo box, this property has a value of 0.
+*/
+int QComboBox::count() const
+{
+ Q_D(const QComboBox);
+ return d->model->rowCount(d->root);
+}
+
+/*!
+ \property QComboBox::maxCount
+ \brief the maximum number of items allowed in the combobox
+
+ \note If you set the maximum number to be less then the current
+ amount of items in the combobox, the extra items will be
+ truncated. This also applies if you have set an external model on
+ the combobox.
+
+ By default, this property's value is derived from the highest
+ signed integer available (typically 2147483647).
+*/
+void QComboBox::setMaxCount(int max)
+{
+ Q_D(QComboBox);
+ if (max < 0) {
+ qWarning("QComboBox::setMaxCount: Invalid count (%d) must be >= 0", max);
+ return;
+ }
+
+ if (max < count())
+ d->model->removeRows(max, count() - max, d->root);
+
+ d->maxCount = max;
+}
+
+int QComboBox::maxCount() const
+{
+ Q_D(const QComboBox);
+ return d->maxCount;
+}
+
+#ifndef QT_NO_COMPLETER
+
+/*!
+ \property QComboBox::autoCompletion
+ \brief whether the combobox provides auto-completion for editable items
+ \since 4.1
+ \obsolete
+
+ Use setCompleter() instead.
+
+ By default, this property is true.
+
+ \sa editable
+*/
+
+/*!
+ \obsolete
+
+ Use setCompleter() instead.
+*/
+bool QComboBox::autoCompletion() const
+{
+ Q_D(const QComboBox);
+ return d->autoCompletion;
+}
+
+/*!
+ \obsolete
+
+ Use setCompleter() instead.
+*/
+void QComboBox::setAutoCompletion(bool enable)
+{
+ Q_D(QComboBox);
+
+#ifdef QT_KEYPAD_NAVIGATION
+ if (QApplication::keypadNavigationEnabled() && !enable && isEditable())
+ qWarning("QComboBox::setAutoCompletion: auto completion is mandatory when combo box editable");
+#endif
+
+ d->autoCompletion = enable;
+ if (!d->lineEdit)
+ return;
+ if (enable) {
+ if (d->lineEdit->completer())
+ return;
+ d->completer = new QCompleter(d->model, d->lineEdit);
+ d->completer->setCaseSensitivity(d->autoCompletionCaseSensitivity);
+ d->completer->setCompletionMode(QCompleter::InlineCompletion);
+ d->completer->setCompletionColumn(d->modelColumn);
+ d->lineEdit->setCompleter(d->completer);
+ d->completer->setWidget(this);
+ } else {
+ d->lineEdit->setCompleter(0);
+ }
+}
+
+/*!
+ \property QComboBox::autoCompletionCaseSensitivity
+ \brief whether string comparisons are case-sensitive or case-insensitive for auto-completion
+ \obsolete
+
+ By default, this property is Qt::CaseInsensitive.
+
+ Use setCompleter() instead. Case sensitivity of the auto completion can be
+ changed using QCompleter::setCaseSensitivity().
+
+ \sa autoCompletion
+*/
+
+/*!
+ \obsolete
+
+ Use setCompleter() and QCompleter::setCaseSensitivity() instead.
+*/
+Qt::CaseSensitivity QComboBox::autoCompletionCaseSensitivity() const
+{
+ Q_D(const QComboBox);
+ return d->autoCompletionCaseSensitivity;
+}
+
+/*!
+ \obsolete
+
+ Use setCompleter() and QCompleter::setCaseSensitivity() instead.
+*/
+void QComboBox::setAutoCompletionCaseSensitivity(Qt::CaseSensitivity sensitivity)
+{
+ Q_D(QComboBox);
+ d->autoCompletionCaseSensitivity = sensitivity;
+ if (d->lineEdit && d->lineEdit->completer())
+ d->lineEdit->completer()->setCaseSensitivity(sensitivity);
+}
+
+#endif // QT_NO_COMPLETER
+
+/*!
+ \property QComboBox::duplicatesEnabled
+ \brief whether the user can enter duplicate items into the combobox
+
+ Note that it is always possible to programmatically insert duplicate items into the
+ combobox.
+
+ By default, this property is false (duplicates are not allowed).
+*/
+bool QComboBox::duplicatesEnabled() const
+{
+ Q_D(const QComboBox);
+ return d->duplicatesEnabled;
+}
+
+void QComboBox::setDuplicatesEnabled(bool enable)
+{
+ Q_D(QComboBox);
+ d->duplicatesEnabled = enable;
+}
+
+/*! \fn int QComboBox::findText(const QString &text, Qt::MatchFlags flags = Qt::MatchExactly|Qt::MatchCaseSensitive) const
+
+ Returns the index of the item containing the given \a text; otherwise
+ returns -1.
+
+ The \a flags specify how the items in the combobox are searched.
+*/
+
+/*!
+ Returns the index of the item containing the given \a data for the
+ given \a role; otherwise returns -1.
+
+ The \a flags specify how the items in the combobox are searched.
+*/
+int QComboBox::findData(const QVariant &data, int role, Qt::MatchFlags flags) const
+{
+ Q_D(const QComboBox);
+ QModelIndexList result;
+ QModelIndex start = d->model->index(0, d->modelColumn, d->root);
+ result = d->model->match(start, role, data, 1, flags);
+ if (result.isEmpty())
+ return -1;
+ return result.first().row();
+}
+
+/*!
+ \property QComboBox::insertPolicy
+ \brief the policy used to determine where user-inserted items should
+ appear in the combobox
+
+ The default value is \l AtBottom, indicating that new items will appear
+ at the bottom of the list of items.
+
+ \sa InsertPolicy
+*/
+
+QComboBox::InsertPolicy QComboBox::insertPolicy() const
+{
+ Q_D(const QComboBox);
+ return d->insertPolicy;
+}
+
+void QComboBox::setInsertPolicy(InsertPolicy policy)
+{
+ Q_D(QComboBox);
+ d->insertPolicy = policy;
+}
+
+/*!
+ \property QComboBox::sizeAdjustPolicy
+ \brief the policy describing how the size of the combobox changes
+ when the content changes
+
+ The default value is \l AdjustToContentsOnFirstShow.
+
+ \sa SizeAdjustPolicy
+*/
+
+QComboBox::SizeAdjustPolicy QComboBox::sizeAdjustPolicy() const
+{
+ Q_D(const QComboBox);
+ return d->sizeAdjustPolicy;
+}
+
+void QComboBox::setSizeAdjustPolicy(QComboBox::SizeAdjustPolicy policy)
+{
+ Q_D(QComboBox);
+ if (policy == d->sizeAdjustPolicy)
+ return;
+
+ d->sizeAdjustPolicy = policy;
+ d->sizeHint = QSize();
+ d->adjustComboBoxSize();
+ updateGeometry();
+}
+
+/*!
+ \property QComboBox::minimumContentsLength
+ \brief the minimum number of characters that should fit into the combobox.
+
+ The default value is 0.
+
+ If this property is set to a positive value, the
+ minimumSizeHint() and sizeHint() take it into account.
+
+ \sa sizeAdjustPolicy
+*/
+int QComboBox::minimumContentsLength() const
+{
+ Q_D(const QComboBox);
+ return d->minimumContentsLength;
+}
+
+void QComboBox::setMinimumContentsLength(int characters)
+{
+ Q_D(QComboBox);
+ if (characters == d->minimumContentsLength || characters < 0)
+ return;
+
+ d->minimumContentsLength = characters;
+
+ if (d->sizeAdjustPolicy == AdjustToContents
+ || d->sizeAdjustPolicy == AdjustToMinimumContentsLength
+ || d->sizeAdjustPolicy == AdjustToMinimumContentsLengthWithIcon) {
+ d->sizeHint = QSize();
+ d->adjustComboBoxSize();
+ updateGeometry();
+ }
+}
+
+/*!
+ \property QComboBox::iconSize
+ \brief the size of the icons shown in the combobox.
+
+ Unless explicitly set this returns the default value of the
+ current style. This size is the maximum size that icons can have;
+ icons of smaller size are not scaled up.
+*/
+
+QSize QComboBox::iconSize() const
+{
+ Q_D(const QComboBox);
+ if (d->iconSize.isValid())
+ return d->iconSize;
+
+ int iconWidth = style()->pixelMetric(QStyle::PM_SmallIconSize, 0, this);
+ return QSize(iconWidth, iconWidth);
+}
+
+void QComboBox::setIconSize(const QSize &size)
+{
+ Q_D(QComboBox);
+ if (size == d->iconSize)
+ return;
+
+ view()->setIconSize(size);
+ d->iconSize = size;
+ d->sizeHint = QSize();
+ updateGeometry();
+}
+
+/*!
+ \property QComboBox::editable
+ \brief whether the combo box can be edited by the user
+
+ By default, this property is false.
+*/
+bool QComboBox::isEditable() const
+{
+ Q_D(const QComboBox);
+ return d->lineEdit != 0;
+}
+
+/*! \internal
+ update the default delegate
+ depending on the style's SH_ComboBox_Popup hint, we use a different default delegate.
+
+ but we do not change the delegate is the combobox use a custom delegate,
+ unless \a force is set to true.
+ */
+void QComboBoxPrivate::updateDelegate(bool force)
+{
+ Q_Q(QComboBox);
+ QStyleOptionComboBox opt;
+ q->initStyleOption(&opt);
+ if (q->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, q)) {
+ if (force || qobject_cast<QComboBoxDelegate *>(q->itemDelegate()))
+ q->setItemDelegate(new QComboMenuDelegate(q->view(), q));
+ } else {
+ if (force || qobject_cast<QComboMenuDelegate *>(q->itemDelegate()))
+ q->setItemDelegate(new QComboBoxDelegate(q->view(), q));
+ }
+}
+
+QIcon QComboBoxPrivate::itemIcon(const QModelIndex &index) const
+{
+ QVariant decoration = model->data(index, Qt::DecorationRole);
+ if (decoration.type() == QVariant::Pixmap)
+ return QIcon(qvariant_cast<QPixmap>(decoration));
+ else
+ return qvariant_cast<QIcon>(decoration);
+}
+
+void QComboBox::setEditable(bool editable)
+{
+ Q_D(QComboBox);
+ if (isEditable() == editable)
+ return;
+
+ d->updateDelegate();
+
+ QStyleOptionComboBox opt;
+ initStyleOption(&opt);
+ if (editable) {
+ if (style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, this)) {
+ d->viewContainer()->updateScrollers();
+ view()->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
+ }
+ QLineEdit *le = new QLineEdit(this);
+ setLineEdit(le);
+ } else {
+ if (style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, this)) {
+ d->viewContainer()->updateScrollers();
+ view()->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+ }
+ setAttribute(Qt::WA_InputMethodEnabled, false);
+ d->lineEdit->hide();
+ d->lineEdit->deleteLater();
+ d->lineEdit = 0;
+ }
+
+ d->viewContainer()->updateTopBottomMargin();
+ if (!testAttribute(Qt::WA_Resized))
+ adjustSize();
+}
+
+/*!
+ Sets the line \a edit to use instead of the current line edit widget.
+
+ The combo box takes ownership of the line edit.
+*/
+void QComboBox::setLineEdit(QLineEdit *edit)
+{
+ Q_D(QComboBox);
+ if (!edit) {
+ qWarning("QComboBox::setLineEdit: cannot set a 0 line edit");
+ return;
+ }
+
+ if (edit == d->lineEdit)
+ return;
+
+ edit->setText(currentText());
+ delete d->lineEdit;
+
+ d->lineEdit = edit;
+ if (d->lineEdit->parent() != this)
+ d->lineEdit->setParent(this);
+ connect(d->lineEdit, SIGNAL(returnPressed()), this, SLOT(_q_returnPressed()));
+ connect(d->lineEdit, SIGNAL(textChanged(QString)), this, SIGNAL(editTextChanged(QString)));
+#ifdef QT3_SUPPORT
+ connect(d->lineEdit, SIGNAL(textChanged(QString)), this, SIGNAL(textChanged(QString)));
+#endif
+ d->lineEdit->setFrame(false);
+ d->lineEdit->setContextMenuPolicy(Qt::NoContextMenu);
+ d->lineEdit->setFocusProxy(this);
+ d->lineEdit->setAttribute(Qt::WA_MacShowFocusRect, false);
+#ifndef QT_NO_COMPLETER
+ setAutoCompletion(d->autoCompletion);
+#endif
+
+#ifdef QT_KEYPAD_NAVIGATION
+#ifndef QT_NO_COMPLETER
+ if (QApplication::keypadNavigationEnabled()) {
+ // Editable combo boxes will have a completer that is set to UnfilteredPopupCompletion.
+ // This means that when the user enters edit mode they are immediately presented with a
+ // list of possible completions.
+ setAutoCompletion(true);
+ if (d->completer) {
+ d->completer->setCompletionMode(QCompleter::UnfilteredPopupCompletion);
+ connect(d->completer, SIGNAL(activated(QModelIndex)), this, SLOT(_q_completerActivated()));
+ }
+ }
+#endif
+#endif
+
+ setAttribute(Qt::WA_InputMethodEnabled);
+ d->updateLayoutDirection();
+ d->updateLineEditGeometry();
+ if (isVisible())
+ d->lineEdit->show();
+
+ update();
+}
+
+/*!
+ Returns the line edit used to edit items in the combobox, or 0 if there
+ is no line edit.
+
+ Only editable combo boxes have a line edit.
+*/
+QLineEdit *QComboBox::lineEdit() const
+{
+ Q_D(const QComboBox);
+ return d->lineEdit;
+}
+
+#ifndef QT_NO_VALIDATOR
+/*!
+ \fn void QComboBox::setValidator(const QValidator *validator)
+
+ Sets the \a validator to use instead of the current validator.
+*/
+
+void QComboBox::setValidator(const QValidator *v)
+{
+ Q_D(QComboBox);
+ if (d->lineEdit)
+ d->lineEdit->setValidator(v);
+}
+
+/*!
+ Returns the validator that is used to constrain text input for the
+ combobox.
+
+ \sa editable
+*/
+const QValidator *QComboBox::validator() const
+{
+ Q_D(const QComboBox);
+ return d->lineEdit ? d->lineEdit->validator() : 0;
+}
+#endif // QT_NO_VALIDATOR
+
+#ifndef QT_NO_COMPLETER
+
+/*!
+ \fn void QComboBox::setCompleter(QCompleter *completer)
+ \since 4.2
+
+ Sets the \a completer to use instead of the current completer.
+ If \a completer is 0, auto completion is disabled.
+
+ By default, for an editable combo box, a QCompleter that
+ performs case insensitive inline completion is automatically created.
+*/
+void QComboBox::setCompleter(QCompleter *c)
+{
+ Q_D(QComboBox);
+ if (!d->lineEdit)
+ return;
+ d->lineEdit->setCompleter(c);
+ if (c)
+ c->setWidget(this);
+}
+
+/*!
+ \since 4.2
+
+ Returns the completer that is used to auto complete text input for the
+ combobox.
+
+ \sa editable
+*/
+QCompleter *QComboBox::completer() const
+{
+ Q_D(const QComboBox);
+ return d->lineEdit ? d->lineEdit->completer() : 0;
+}
+
+#endif // QT_NO_COMPLETER
+
+/*!
+ Returns the item delegate used by the popup list view.
+
+ \sa setItemDelegate()
+*/
+QAbstractItemDelegate *QComboBox::itemDelegate() const
+{
+ return view()->itemDelegate();
+}
+
+/*!
+ Sets the item \a delegate for the popup list view.
+ The combobox takes ownership of the delegate.
+
+ \warning You should not share the same instance of a delegate between comboboxes,
+ widget mappers or 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 QComboBox::setItemDelegate(QAbstractItemDelegate *delegate)
+{
+ if (!delegate) {
+ qWarning("QComboBox::setItemDelegate: cannot set a 0 delegate");
+ return;
+ }
+ delete view()->itemDelegate();
+ view()->setItemDelegate(delegate);
+}
+
+/*!
+ Returns the model used by the combobox.
+*/
+
+QAbstractItemModel *QComboBox::model() const
+{
+ Q_D(const QComboBox);
+ if (d->model == QAbstractItemModelPrivate::staticEmptyModel()) {
+ QComboBox *that = const_cast<QComboBox*>(this);
+ that->setModel(new QStandardItemModel(0, 1, that));
+ }
+ return d->model;
+}
+
+/*!
+ Sets the model to be \a model. \a model must not be 0.
+ If you want to clear the contents of a model, call clear().
+
+ \sa clear()
+*/
+void QComboBox::setModel(QAbstractItemModel *model)
+{
+ Q_D(QComboBox);
+
+ if (!model) {
+ qWarning("QComboBox::setModel: cannot set a 0 model");
+ return;
+ }
+
+#ifndef QT_NO_COMPLETER
+ if (d->lineEdit && d->lineEdit->completer()
+ && d->lineEdit->completer() == d->completer)
+ d->lineEdit->completer()->setModel(model);
+#endif
+ if (d->model) {
+ disconnect(d->model, SIGNAL(dataChanged(QModelIndex,QModelIndex)),
+ this, SLOT(_q_dataChanged(QModelIndex,QModelIndex)));
+ disconnect(d->model, SIGNAL(rowsAboutToBeInserted(QModelIndex,int,int)),
+ this, SLOT(_q_rowsAboutToBeInserted(QModelIndex,int,int)));
+ disconnect(d->model, SIGNAL(rowsInserted(QModelIndex,int,int)),
+ this, SLOT(_q_rowsInserted(QModelIndex,int,int)));
+ disconnect(d->model, SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)),
+ this, SLOT(_q_rowsAboutToBeRemoved(QModelIndex,int,int)));
+ disconnect(d->model, SIGNAL(rowsRemoved(QModelIndex,int,int)),
+ this, SLOT(_q_rowsRemoved(QModelIndex,int,int)));
+ disconnect(d->model, SIGNAL(destroyed()),
+ this, SLOT(_q_modelDestroyed()));
+ disconnect(d->model, SIGNAL(modelReset()),
+ this, SLOT(_q_modelReset()));
+ if (d->model->QObject::parent() == this)
+ delete d->model;
+ }
+
+ d->model = model;
+
+ connect(model, SIGNAL(dataChanged(QModelIndex,QModelIndex)),
+ this, SLOT(_q_dataChanged(QModelIndex,QModelIndex)));
+ connect(model, SIGNAL(rowsAboutToBeInserted(QModelIndex,int,int)),
+ this, SLOT(_q_rowsAboutToBeInserted(QModelIndex,int,int)));
+ connect(model, SIGNAL(rowsInserted(QModelIndex,int,int)),
+ this, SLOT(_q_rowsInserted(QModelIndex,int,int)));
+ connect(model, SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)),
+ this, SLOT(_q_rowsAboutToBeRemoved(QModelIndex,int,int)));
+ connect(model, SIGNAL(rowsRemoved(QModelIndex,int,int)),
+ this, SLOT(_q_rowsRemoved(QModelIndex,int,int)));
+ connect(model, SIGNAL(destroyed()),
+ this, SLOT(_q_modelDestroyed()));
+ connect(model, SIGNAL(modelReset()),
+ this, SLOT(_q_modelReset()));
+
+ if (d->container)
+ d->container->itemView()->setModel(model);
+
+ bool currentReset = false;
+
+ if (count()) {
+ for (int pos=0; pos < count(); pos++) {
+ if (d->model->index(pos, d->modelColumn, d->root).flags() & Qt::ItemIsEnabled) {
+ setCurrentIndex(pos);
+ currentReset = true;
+ break;
+ }
+ }
+ }
+
+ if (!currentReset)
+ setCurrentIndex(-1);
+
+ d->modelChanged();
+}
+
+/*!
+ Returns the root model item index for the items in the combobox.
+
+ \sa setRootModelIndex()
+*/
+
+QModelIndex QComboBox::rootModelIndex() const
+{
+ Q_D(const QComboBox);
+ return QModelIndex(d->root);
+}
+
+/*!
+ Sets the root model item \a index for the items in the combobox.
+
+ \sa rootModelIndex()
+*/
+void QComboBox::setRootModelIndex(const QModelIndex &index)
+{
+ Q_D(QComboBox);
+ d->root = QPersistentModelIndex(index);
+ view()->setRootIndex(index);
+ update();
+}
+
+/*!
+ \property QComboBox::currentIndex
+ \brief the index of the current item in the combobox.
+
+ The current index can change when inserting or removing items.
+
+ By default, for an empty combo box or a combo box in which no current
+ item is set, this property has a value of -1.
+*/
+int QComboBox::currentIndex() const
+{
+ Q_D(const QComboBox);
+ return d->currentIndex.row();
+}
+
+void QComboBox::setCurrentIndex(int index)
+{
+ Q_D(QComboBox);
+ QModelIndex mi = d->model->index(index, d->modelColumn, d->root);
+ d->setCurrentIndex(mi);
+}
+
+void QComboBoxPrivate::setCurrentIndex(const QModelIndex &mi)
+{
+ Q_Q(QComboBox);
+ bool indexChanged = (mi != currentIndex);
+ if (indexChanged)
+ currentIndex = QPersistentModelIndex(mi);
+ if (lineEdit) {
+ QString newText = q->itemText(currentIndex.row());
+ if (lineEdit->text() != newText)
+ lineEdit->setText(q->itemText(currentIndex.row()));
+ updateLineEditGeometry();
+ }
+ if (indexChanged) {
+ q->update();
+ _q_emitCurrentIndexChanged(currentIndex);
+ }
+}
+
+/*!
+ \property QComboBox::currentText
+ \brief the text of the current item
+
+ By default, for an empty combo box or a combo box in which no current
+ item is set, this property contains an empty string.
+*/
+QString QComboBox::currentText() const
+{
+ Q_D(const QComboBox);
+ if (d->lineEdit)
+ return d->lineEdit->text();
+ else if (d->currentIndex.isValid())
+ return d->itemText(d->currentIndex);
+ else
+ return QString();
+}
+
+/*!
+ Returns the text for the given \a index in the combobox.
+*/
+QString QComboBox::itemText(int index) const
+{
+ Q_D(const QComboBox);
+ QModelIndex mi = d->model->index(index, d->modelColumn, d->root);
+ return d->itemText(mi);
+}
+
+/*!
+ Returns the icon for the given \a index in the combobox.
+*/
+QIcon QComboBox::itemIcon(int index) const
+{
+ Q_D(const QComboBox);
+ QModelIndex mi = d->model->index(index, d->modelColumn, d->root);
+ return d->itemIcon(mi);
+}
+
+/*!
+ Returns the data for the given \a role in the given \a index in the
+ combobox, or QVariant::Invalid if there is no data for this role.
+*/
+QVariant QComboBox::itemData(int index, int role) const
+{
+ Q_D(const QComboBox);
+ QModelIndex mi = d->model->index(index, d->modelColumn, d->root);
+ return d->model->data(mi, role);
+}
+
+/*!
+ \fn void QComboBox::insertItem(int index, const QString &text, const QVariant &userData)
+
+ Inserts the \a text and \a userData (stored in the Qt::UserRole)
+ into the combobox at the given \a index.
+
+ If the index is equal to or higher than the total number of items,
+ the new item is appended to the list of existing items. If the
+ index is zero or negative, the new item is prepended to the list
+ of existing items.
+
+ \sa insertItems()
+*/
+
+/*!
+
+ Inserts the \a icon, \a text and \a userData (stored in the
+ Qt::UserRole) into the combobox at the given \a index.
+
+ If the index is equal to or higher than the total number of items,
+ the new item is appended to the list of existing items. If the
+ index is zero or negative, the new item is prepended to the list
+ of existing items.
+
+ \sa insertItems()
+*/
+void QComboBox::insertItem(int index, const QIcon &icon, const QString &text, const QVariant &userData)
+{
+ Q_D(QComboBox);
+ int itemCount = count();
+ index = qBound(0, index, itemCount);
+ if (index >= d->maxCount)
+ return;
+
+ // For the common case where we are using the built in QStandardItemModel
+ // construct a QStandardItem, reducing the number of expensive signals from the model
+ if (QStandardItemModel *m = qobject_cast<QStandardItemModel*>(d->model)) {
+ QStandardItem *item = new QStandardItem(text);
+ if (!icon.isNull()) item->setData(icon, Qt::DecorationRole);
+ if (userData.isValid()) item->setData(userData, Qt::UserRole);
+ m->insertRow(index, item);
+ ++itemCount;
+ } else {
+ d->inserting = true;
+ if (d->model->insertRows(index, 1, d->root)) {
+ QModelIndex item = d->model->index(index, d->modelColumn, d->root);
+ if (icon.isNull() && !userData.isValid()) {
+ d->model->setData(item, text, Qt::EditRole);
+ } else {
+ QMap<int, QVariant> values;
+ if (!text.isNull()) values.insert(Qt::EditRole, text);
+ if (!icon.isNull()) values.insert(Qt::DecorationRole, icon);
+ if (userData.isValid()) values.insert(Qt::UserRole, userData);
+ if (!values.isEmpty()) d->model->setItemData(item, values);
+ }
+ d->inserting = false;
+ d->_q_rowsInserted(d->root, index, index);
+ ++itemCount;
+ } else {
+ d->inserting = false;
+ }
+ }
+
+ if (itemCount > d->maxCount)
+ d->model->removeRows(itemCount - 1, itemCount - d->maxCount, d->root);
+}
+
+/*!
+ Inserts the strings from the \a list into the combobox as separate items,
+ starting at the \a index specified.
+
+ If the index is equal to or higher than the total number of items, the new items
+ are appended to the list of existing items. If the index is zero or negative, the
+ new items are prepended to the list of existing items.
+
+ \sa insertItem()
+ */
+void QComboBox::insertItems(int index, const QStringList &list)
+{
+ Q_D(QComboBox);
+ if (list.isEmpty())
+ return;
+ index = qBound(0, index, count());
+ int insertCount = qMin(d->maxCount - index, list.count());
+ if (insertCount <= 0)
+ return;
+ // For the common case where we are using the built in QStandardItemModel
+ // construct a QStandardItem, reducing the number of expensive signals from the model
+ if (QStandardItemModel *m = qobject_cast<QStandardItemModel*>(d->model)) {
+ QList<QStandardItem *> items;
+ QStandardItem *hiddenRoot = m->invisibleRootItem();
+ for (int i = 0; i < insertCount; ++i)
+ items.append(new QStandardItem(list.at(i)));
+ hiddenRoot->insertRows(index, items);
+ } else {
+ d->inserting = true;
+ if (d->model->insertRows(index, insertCount, d->root)) {
+ QModelIndex item;
+ for (int i = 0; i < insertCount; ++i) {
+ item = d->model->index(i+index, d->modelColumn, d->root);
+ d->model->setData(item, list.at(i), Qt::EditRole);
+ }
+ d->inserting = false;
+ d->_q_rowsInserted(d->root, index, index + insertCount - 1);
+ } else {
+ d->inserting = false;
+ }
+ }
+
+ int mc = count();
+ if (mc > d->maxCount)
+ d->model->removeRows(d->maxCount, mc - d->maxCount, d->root);
+}
+
+/*!
+ \since 4.4
+
+ Inserts a separator item into the combobox at the given \a index.
+
+ If the index is equal to or higher than the total number of items, the new item
+ is appended to the list of existing items. If the index is zero or negative, the
+ new item is prepended to the list of existing items.
+
+ \sa insertItem()
+*/
+void QComboBox::insertSeparator(int index)
+{
+ Q_D(QComboBox);
+ int itemCount = count();
+ index = qBound(0, index, itemCount);
+ if (index >= d->maxCount)
+ return;
+ insertItem(index, QIcon(), QString());
+ QComboBoxDelegate::setSeparator(d->model, d->model->index(index, 0, d->root));
+}
+
+/*!
+ Removes the item at the given \a index from the combobox.
+ This will update the current index if the index is removed.
+
+ This function does nothing if \a index is out of range.
+*/
+void QComboBox::removeItem(int index)
+{
+ Q_D(QComboBox);
+ if (index < 0 || index >= count())
+ return;
+ d->model->removeRows(index, 1, d->root);
+}
+
+/*!
+ Sets the \a text for the item on the given \a index in the combobox.
+*/
+void QComboBox::setItemText(int index, const QString &text)
+{
+ Q_D(const QComboBox);
+ QModelIndex item = d->model->index(index, d->modelColumn, d->root);
+ if (item.isValid()) {
+ d->model->setData(item, text, Qt::EditRole);
+ }
+}
+
+/*!
+ Sets the \a icon for the item on the given \a index in the combobox.
+*/
+void QComboBox::setItemIcon(int index, const QIcon &icon)
+{
+ Q_D(const QComboBox);
+ QModelIndex item = d->model->index(index, d->modelColumn, d->root);
+ if (item.isValid()) {
+ d->model->setData(item, icon, Qt::DecorationRole);
+ }
+}
+
+/*!
+ Sets the data \a role for the item on the given \a index in the combobox
+ to the specified \a value.
+*/
+void QComboBox::setItemData(int index, const QVariant &value, int role)
+{
+ Q_D(const QComboBox);
+ QModelIndex item = d->model->index(index, d->modelColumn, d->root);
+ if (item.isValid()) {
+ d->model->setData(item, value, role);
+ }
+}
+
+/*!
+ Returns the list view used for the combobox popup.
+*/
+QAbstractItemView *QComboBox::view() const
+{
+ Q_D(const QComboBox);
+ return const_cast<QComboBoxPrivate*>(d)->viewContainer()->itemView();
+}
+
+/*!
+ Sets the view to be used in the combobox popup to the given \a
+ itemView. The combobox takes ownership of the view.
+
+ Note: If you want to use the convenience views (like QListWidget,
+ QTableWidget or QTreeWidget), make sure to call setModel() on the
+ combobox with the convenience widgets model before calling this
+ function.
+*/
+void QComboBox::setView(QAbstractItemView *itemView)
+{
+ Q_D(QComboBox);
+ if (!itemView) {
+ qWarning("QComboBox::setView: cannot set a 0 view");
+ return;
+ }
+
+ if (itemView->model() != d->model)
+ itemView->setModel(d->model);
+ d->viewContainer()->setItemView(itemView);
+}
+
+/*!
+ \reimp
+*/
+QSize QComboBox::minimumSizeHint() const
+{
+ Q_D(const QComboBox);
+ return d->recomputeSizeHint(d->minimumSizeHint);
+}
+
+/*!
+ \reimp
+
+ This implementation caches the size hint to avoid resizing when
+ the contents change dynamically. To invalidate the cached value
+ change the \l sizeAdjustPolicy.
+*/
+QSize QComboBox::sizeHint() const
+{
+ Q_D(const QComboBox);
+ return d->recomputeSizeHint(d->sizeHint);
+}
+
+/*!
+ Displays the list of items in the combobox. If the list is empty
+ then the no items will be shown.
+
+ If you reimplement this function to show a custom pop-up, make
+ sure you call hidePopup() to reset the internal state.
+
+ \sa hidePopup()
+*/
+void QComboBox::showPopup()
+{
+ Q_D(QComboBox);
+ if (count() <= 0)
+ return;
+
+#ifdef QT_KEYPAD_NAVIGATION
+#ifndef QT_NO_COMPLETER
+ if (QApplication::keypadNavigationEnabled() && d->completer) {
+ // editable combo box is line edit plus completer
+ setEditFocus(true);
+ d->completer->complete(); // show popup
+ return;
+ }
+#endif
+#endif
+
+ QStyle * const style = this->style();
+
+ // set current item and select it
+ view()->selectionModel()->setCurrentIndex(d->currentIndex,
+ QItemSelectionModel::ClearAndSelect);
+ QComboBoxPrivateContainer* container = d->viewContainer();
+ QStyleOptionComboBox opt;
+ initStyleOption(&opt);
+ QRect listRect(style->subControlRect(QStyle::CC_ComboBox, &opt,
+ QStyle::SC_ComboBoxListBoxPopup, this));
+ QRect screen = d->popupGeometry(QApplication::desktop()->screenNumber(this));
+ QPoint below = mapToGlobal(listRect.bottomLeft());
+ int belowHeight = screen.bottom() - below.y();
+ QPoint above = mapToGlobal(listRect.topLeft());
+ int aboveHeight = above.y() - screen.y();
+ bool boundToScreen = !window()->testAttribute(Qt::WA_DontShowOnScreen);
+
+ const bool usePopup = style->styleHint(QStyle::SH_ComboBox_Popup, &opt, this);
+ {
+ int listHeight = 0;
+ int count = 0;
+ QStack<QModelIndex> toCheck;
+ toCheck.push(view()->rootIndex());
+#ifndef QT_NO_TREEVIEW
+ QTreeView *treeView = qobject_cast<QTreeView*>(view());
+ if (treeView && treeView->header() && !treeView->header()->isHidden())
+ listHeight += treeView->header()->height();
+#endif
+ while (!toCheck.isEmpty()) {
+ QModelIndex parent = toCheck.pop();
+ for (int i = 0; i < d->model->rowCount(parent); ++i) {
+ QModelIndex idx = d->model->index(i, d->modelColumn, parent);
+ if (!idx.isValid())
+ continue;
+ listHeight += view()->visualRect(idx).height() + container->spacing();
+#ifndef QT_NO_TREEVIEW
+ if (d->model->hasChildren(idx) && treeView && treeView->isExpanded(idx))
+ toCheck.push(idx);
+#endif
+ ++count;
+ if (!usePopup && count > d->maxVisibleItems) {
+ toCheck.clear();
+ break;
+ }
+ }
+ }
+ listRect.setHeight(listHeight);
+ }
+
+ {
+ // add the spacing for the grid on the top and the bottom;
+ int heightMargin = 2*container->spacing();
+
+ // add the frame of the container
+ int marginTop, marginBottom;
+ container->getContentsMargins(0, &marginTop, 0, &marginBottom);
+ heightMargin += marginTop + marginBottom;
+
+ //add the frame of the view
+ view()->getContentsMargins(0, &marginTop, 0, &marginBottom);
+ marginTop += static_cast<QAbstractScrollAreaPrivate *>(QObjectPrivate::get(view()))->top;
+ marginBottom += static_cast<QAbstractScrollAreaPrivate *>(QObjectPrivate::get(view()))->bottom;
+ heightMargin += marginTop + marginBottom;
+
+ listRect.setHeight(listRect.height() + heightMargin);
+ }
+
+ // Add space for margin at top and bottom if the style wants it.
+ if (usePopup)
+ listRect.setHeight(listRect.height() + style->pixelMetric(QStyle::PM_MenuVMargin, &opt, this) * 2);
+
+ // Make sure the popup is wide enough to display its contents.
+ if (usePopup) {
+ const int diff = d->computeWidthHint() - width();
+ if (diff > 0)
+ listRect.setWidth(listRect.width() + diff);
+ }
+
+ //we need to activate the layout to make sure the min/maximum size are set when the widget was not yet show
+ container->layout()->activate();
+ //takes account of the minimum/maximum size of the container
+ listRect.setSize( listRect.size().expandedTo(container->minimumSize())
+ .boundedTo(container->maximumSize()));
+
+ // make sure the widget fits on screen
+ if (boundToScreen) {
+ if (listRect.width() > screen.width() )
+ listRect.setWidth(screen.width());
+ if (mapToGlobal(listRect.bottomRight()).x() > screen.right()) {
+ below.setX(screen.x() + screen.width() - listRect.width());
+ above.setX(screen.x() + screen.width() - listRect.width());
+ }
+ if (mapToGlobal(listRect.topLeft()).x() < screen.x() ) {
+ below.setX(screen.x());
+ above.setX(screen.x());
+ }
+ }
+
+ if (usePopup) {
+ // Position horizontally.
+ listRect.moveLeft(above.x());
+
+ // Position vertically so the curently selected item lines up
+ // with the combo box.
+ const QRect currentItemRect = view()->visualRect(view()->currentIndex());
+ const int offset = listRect.top() - currentItemRect.top();
+ listRect.moveTop(above.y() + offset - listRect.top());
+
+
+ // Clamp the listRect height and vertical position so we don't expand outside the
+ // available screen geometry.This may override the vertical position, but it is more
+ // important to show as much as possible of the popup.
+ const int height = !boundToScreen ? listRect.height() : qMin(listRect.height(), screen.height());
+ listRect.setHeight(height);
+ if (boundToScreen) {
+ if (listRect.top() < screen.top())
+ listRect.moveTop(screen.top());
+ if (listRect.bottom() > screen.bottom())
+ listRect.moveBottom(screen.bottom());
+ }
+ } else if (!boundToScreen || listRect.height() <= belowHeight) {
+ listRect.moveTopLeft(below);
+ } else if (listRect.height() <= aboveHeight) {
+ listRect.moveBottomLeft(above);
+ } else if (belowHeight >= aboveHeight) {
+ listRect.setHeight(belowHeight);
+ listRect.moveTopLeft(below);
+ } else {
+ listRect.setHeight(aboveHeight);
+ listRect.moveBottomLeft(above);
+ }
+
+#ifndef QT_NO_IM
+ if (QInputContext *qic = inputContext())
+ qic->reset();
+#endif
+ QScrollBar *sb = view()->horizontalScrollBar();
+ Qt::ScrollBarPolicy policy = view()->horizontalScrollBarPolicy();
+ bool needHorizontalScrollBar = (policy == Qt::ScrollBarAsNeeded || policy == Qt::ScrollBarAlwaysOn)
+ && sb->minimum() < sb->maximum();
+ if (needHorizontalScrollBar) {
+ listRect.adjust(0, 0, 0, sb->height());
+ }
+ container->setGeometry(listRect);
+
+#ifndef Q_WS_MAC
+ const bool updatesEnabled = container->updatesEnabled();
+#endif
+
+#if defined(Q_WS_WIN) && !defined(QT_NO_EFFECTS)
+ bool scrollDown = (listRect.topLeft() == below);
+ if (QApplication::isEffectEnabled(Qt::UI_AnimateCombo)
+ && !style->styleHint(QStyle::SH_ComboBox_Popup, &opt, this) && !window()->testAttribute(Qt::WA_DontShowOnScreen))
+ qScrollEffect(container, scrollDown ? QEffects::DownScroll : QEffects::UpScroll, 150);
+#endif
+
+// Don't disable updates on Mac OS X. Windows are displayed immediately on this platform,
+// which means that the window will be visible before the call to container->show() returns.
+// If updates are disabled at this point we'll miss our chance at painting the popup
+// menu before it's shown, causing flicker since the window then displays the standard gray
+// background.
+#ifndef Q_WS_MAC
+ container->setUpdatesEnabled(false);
+#endif
+
+ container->raise();
+ container->show();
+ container->updateScrollers();
+ view()->setFocus();
+
+ view()->scrollTo(view()->currentIndex(),
+ style->styleHint(QStyle::SH_ComboBox_Popup, &opt, this)
+ ? QAbstractItemView::PositionAtCenter
+ : QAbstractItemView::EnsureVisible);
+
+#ifndef Q_WS_MAC
+ container->setUpdatesEnabled(updatesEnabled);
+#endif
+
+ container->update();
+#ifdef QT_KEYPAD_NAVIGATION
+ if (QApplication::keypadNavigationEnabled())
+ view()->setEditFocus(true);
+#endif
+}
+
+/*!
+ Hides the list of items in the combobox if it is currently visible
+ and resets the internal state, so that if the custom pop-up was
+ shown inside the reimplemented showPopup(), then you also need to
+ reimplement the hidePopup() function to hide your custom pop-up
+ and call the base class implementation to reset the internal state
+ whenever your custom pop-up widget is hidden.
+
+ \sa showPopup()
+*/
+void QComboBox::hidePopup()
+{
+ Q_D(QComboBox);
+ if (d->container && d->container->isVisible()) {
+#if !defined(QT_NO_EFFECTS)
+ d->model->blockSignals(true);
+ d->container->itemView()->blockSignals(true);
+ d->container->blockSignals(true);
+ // Flash selected/triggered item (if any).
+ if (style()->styleHint(QStyle::SH_Menu_FlashTriggeredItem)) {
+ QItemSelectionModel *selectionModel = view() ? view()->selectionModel() : 0;
+ if (selectionModel && selectionModel->hasSelection()) {
+ QEventLoop eventLoop;
+ const QItemSelection selection = selectionModel->selection();
+
+ // Deselect item and wait 60 ms.
+ selectionModel->select(selection, QItemSelectionModel::Toggle);
+ QTimer::singleShot(60, &eventLoop, SLOT(quit()));
+ eventLoop.exec();
+
+ // Select item and wait 20 ms.
+ selectionModel->select(selection, QItemSelectionModel::Toggle);
+ QTimer::singleShot(20, &eventLoop, SLOT(quit()));
+ eventLoop.exec();
+ }
+ }
+
+ // Fade out.
+ bool needFade = style()->styleHint(QStyle::SH_Menu_FadeOutOnHide);
+ if (needFade) {
+#if defined(Q_WS_MAC)
+ macWindowFade(qt_mac_window_for(d->container));
+#endif // Q_WS_MAC
+ // Other platform implementations welcome :-)
+ }
+ d->model->blockSignals(false);
+ d->container->itemView()->blockSignals(false);
+ d->container->blockSignals(false);
+
+ if (!needFade)
+#endif // QT_NO_EFFECTS
+ // Fade should implicitly hide as well ;-)
+ d->container->hide();
+ }
+#ifdef QT_KEYPAD_NAVIGATION
+ if (QApplication::keypadNavigationEnabled() && isEditable() && hasFocus())
+ setEditFocus(true);
+#endif
+ d->_q_resetButton();
+}
+
+/*!
+ Clears the combobox, removing all items.
+
+ Note: If you have set an external model on the combobox this model
+ will still be cleared when calling this function.
+*/
+void QComboBox::clear()
+{
+ Q_D(QComboBox);
+ d->model->removeRows(0, d->model->rowCount(d->root), d->root);
+}
+
+/*!
+ \fn void QComboBox::clearValidator()
+
+ Use setValidator(0) instead.
+*/
+
+/*!
+ Clears the contents of the line edit used for editing in the combobox.
+*/
+void QComboBox::clearEditText()
+{
+ Q_D(QComboBox);
+ if (d->lineEdit)
+ d->lineEdit->clear();
+}
+
+/*!
+ Sets the \a text in the combobox's text edit.
+*/
+void QComboBox::setEditText(const QString &text)
+{
+ Q_D(QComboBox);
+ if (d->lineEdit)
+ d->lineEdit->setText(text);
+}
+
+/*!
+ \reimp
+*/
+void QComboBox::focusInEvent(QFocusEvent *e)
+{
+ Q_D(QComboBox);
+ update();
+ if (d->lineEdit) {
+ d->lineEdit->event(e);
+#ifndef QT_NO_COMPLETER
+ if (d->lineEdit->completer())
+ d->lineEdit->completer()->setWidget(this);
+#endif
+ }
+}
+
+/*!
+ \reimp
+*/
+void QComboBox::focusOutEvent(QFocusEvent *e)
+{
+ Q_D(QComboBox);
+ update();
+ if (d->lineEdit)
+ d->lineEdit->event(e);
+}
+
+/*! \reimp */
+void QComboBox::changeEvent(QEvent *e)
+{
+ Q_D(QComboBox);
+ switch (e->type()) {
+ case QEvent::StyleChange:
+ d->updateDelegate();
+#ifdef Q_WS_MAC
+ case QEvent::MacSizeChange:
+#endif
+ d->sizeHint = QSize(); // invalidate size hint
+ d->minimumSizeHint = QSize();
+ d->updateLayoutDirection();
+ if (d->lineEdit)
+ d->updateLineEditGeometry();
+ d->setLayoutItemMargins(QStyle::SE_ComboBoxLayoutItem);
+ // ### need to update scrollers etc. as well here
+ break;
+ case QEvent::EnabledChange:
+ if (!isEnabled())
+ hidePopup();
+ break;
+ case QEvent::PaletteChange: {
+ d->updateViewContainerPaletteAndOpacity();
+ break;
+ }
+ case QEvent::FontChange:
+ d->sizeHint = QSize(); // invalidate size hint
+ d->viewContainer()->setFont(font());
+ if (d->lineEdit)
+ d->updateLineEditGeometry();
+ break;
+ default:
+ break;
+ }
+ QWidget::changeEvent(e);
+}
+
+/*!
+ \reimp
+*/
+void QComboBox::resizeEvent(QResizeEvent *)
+{
+ Q_D(QComboBox);
+ d->updateLineEditGeometry();
+}
+
+/*!
+ \reimp
+*/
+void QComboBox::paintEvent(QPaintEvent *)
+{
+ QStylePainter painter(this);
+ painter.setPen(palette().color(QPalette::Text));
+
+ // draw the combobox frame, focusrect and selected etc.
+ QStyleOptionComboBox opt;
+ initStyleOption(&opt);
+ painter.drawComplexControl(QStyle::CC_ComboBox, opt);
+
+ // draw the icon and text
+ painter.drawControl(QStyle::CE_ComboBoxLabel, opt);
+}
+
+/*!
+ \reimp
+*/
+void QComboBox::showEvent(QShowEvent *e)
+{
+ Q_D(QComboBox);
+ if (!d->shownOnce && d->sizeAdjustPolicy == QComboBox::AdjustToContentsOnFirstShow) {
+ d->sizeHint = QSize();
+ updateGeometry();
+ }
+ d->shownOnce = true;
+ QWidget::showEvent(e);
+}
+
+/*!
+ \reimp
+*/
+void QComboBox::hideEvent(QHideEvent *)
+{
+ hidePopup();
+}
+
+/*!
+ \reimp
+*/
+bool QComboBox::event(QEvent *event)
+{
+ Q_D(QComboBox);
+ switch(event->type()) {
+ case QEvent::LayoutDirectionChange:
+ case QEvent::ApplicationLayoutDirectionChange:
+ d->updateLayoutDirection();
+ d->updateLineEditGeometry();
+ break;
+ case QEvent::HoverEnter:
+ case QEvent::HoverLeave:
+ case QEvent::HoverMove:
+ if (const QHoverEvent *he = static_cast<const QHoverEvent *>(event))
+ d->updateHoverControl(he->pos());
+ break;
+ case QEvent::ShortcutOverride:
+ if (d->lineEdit)
+ return d->lineEdit->event(event);
+ break;
+#ifdef QT_KEYPAD_NAVIGATION
+ case QEvent::EnterEditFocus:
+ if (!d->lineEdit)
+ setEditFocus(false); // We never want edit focus if we are not editable
+ else
+ d->lineEdit->event(event); //so cursor starts
+ break;
+ case QEvent::LeaveEditFocus:
+ if (d->lineEdit)
+ d->lineEdit->event(event); //so cursor stops
+ break;
+#endif
+ default:
+ break;
+ }
+ return QWidget::event(event);
+}
+
+/*!
+ \reimp
+*/
+void QComboBox::mousePressEvent(QMouseEvent *e)
+{
+ Q_D(QComboBox);
+ QStyleOptionComboBox opt;
+ initStyleOption(&opt);
+ QStyle::SubControl sc = style()->hitTestComplexControl(QStyle::CC_ComboBox, &opt, e->pos(),
+ this);
+ if (e->button() == Qt::LeftButton && (sc == QStyle::SC_ComboBoxArrow || !isEditable())
+ && !d->viewContainer()->isVisible()) {
+ if (sc == QStyle::SC_ComboBoxArrow)
+ d->updateArrow(QStyle::State_Sunken);
+#ifdef QT_KEYPAD_NAVIGATION
+ if (!d->lineEdit) {
+#endif
+ // We've restricted the next couple of lines, because by not calling
+ // viewContainer(), we avoid creating the QComboBoxPrivateContainer.
+ d->viewContainer()->blockMouseReleaseTimer.start(QApplication::doubleClickInterval());
+ d->viewContainer()->initialClickPosition = mapToGlobal(e->pos());
+#ifdef QT_KEYPAD_NAVIGATION
+ }
+#endif
+ showPopup();
+ } else {
+#ifdef QT_KEYPAD_NAVIGATION
+ if (QApplication::keypadNavigationEnabled() && sc == QStyle::SC_ComboBoxEditField && d->lineEdit) {
+ d->lineEdit->event(e); //so lineedit can move cursor, etc
+ return;
+ }
+#endif
+ QWidget::mousePressEvent(e);
+ }
+}
+
+/*!
+ \reimp
+*/
+void QComboBox::mouseReleaseEvent(QMouseEvent *e)
+{
+ Q_D(QComboBox);
+ Q_UNUSED(e);
+ d->updateArrow(QStyle::State_None);
+}
+
+/*!
+ \reimp
+*/
+void QComboBox::keyPressEvent(QKeyEvent *e)
+{
+ Q_D(QComboBox);
+
+#ifndef QT_NO_COMPLETER
+ if (d->lineEdit
+ && d->lineEdit->completer()
+ && d->lineEdit->completer()->popup()
+ && d->lineEdit->completer()->popup()->isVisible()) {
+ // provide same autocompletion support as line edit
+ d->lineEdit->event(e);
+ return;
+ }
+#endif
+
+ enum Move { NoMove=0 , MoveUp , MoveDown , MoveFirst , MoveLast};
+
+ Move move = NoMove;
+ int newIndex = currentIndex();
+ switch (e->key()) {
+ case Qt::Key_Up:
+ if (e->modifiers() & Qt::ControlModifier)
+ break; // pass to line edit for auto completion
+ case Qt::Key_PageUp:
+#ifdef QT_KEYPAD_NAVIGATION
+ if (QApplication::keypadNavigationEnabled())
+ e->ignore();
+ else
+#endif
+ move = MoveUp;
+ break;
+ case Qt::Key_Down:
+ if (e->modifiers() & Qt::AltModifier) {
+ showPopup();
+ return;
+ } else if (e->modifiers() & Qt::ControlModifier)
+ break; // pass to line edit for auto completion
+ // fall through
+ case Qt::Key_PageDown:
+#ifdef QT_KEYPAD_NAVIGATION
+ if (QApplication::keypadNavigationEnabled())
+ e->ignore();
+ else
+#endif
+ move = MoveDown;
+ break;
+ case Qt::Key_Home:
+ if (!d->lineEdit)
+ move = MoveFirst;
+ break;
+ case Qt::Key_End:
+ if (!d->lineEdit)
+ move = MoveLast;
+ break;
+ case Qt::Key_F4:
+ if (!e->modifiers()) {
+ showPopup();
+ return;
+ }
+ break;
+ case Qt::Key_Space:
+ if (!d->lineEdit) {
+ showPopup();
+ return;
+ }
+ case Qt::Key_Enter:
+ case Qt::Key_Return:
+ case Qt::Key_Escape:
+ if (!d->lineEdit)
+ e->ignore();
+ break;
+#ifdef QT_KEYPAD_NAVIGATION
+ case Qt::Key_Select:
+ if (QApplication::keypadNavigationEnabled()
+ && (!hasEditFocus() || !d->lineEdit)) {
+ showPopup();
+ return;
+ }
+ break;
+ case Qt::Key_Left:
+ case Qt::Key_Right:
+ if (QApplication::keypadNavigationEnabled() && !hasEditFocus())
+ e->ignore();
+ break;
+ case Qt::Key_Back:
+ if (QApplication::keypadNavigationEnabled()) {
+ if (!hasEditFocus() || !d->lineEdit)
+ e->ignore();
+ } else {
+ e->ignore(); // let the surounding dialog have it
+ }
+ break;
+#endif
+ default:
+ if (!d->lineEdit) {
+ if (!e->text().isEmpty())
+ d->keyboardSearchString(e->text());
+ else
+ e->ignore();
+ }
+ }
+
+ if (move != NoMove) {
+ e->accept();
+ switch (move) {
+ case MoveFirst:
+ newIndex = -1;
+ case MoveDown:
+ newIndex++;
+ while ((newIndex < count()) && !(d->model->flags(d->model->index(newIndex,d->modelColumn,d->root)) & Qt::ItemIsEnabled))
+ newIndex++;
+ break;
+ case MoveLast:
+ newIndex = count();
+ case MoveUp:
+ newIndex--;
+ while ((newIndex >= 0) && !(d->model->flags(d->model->index(newIndex,d->modelColumn,d->root)) & Qt::ItemIsEnabled))
+ newIndex--;
+ break;
+ default:
+ e->ignore();
+ break;
+ }
+
+ if (newIndex >= 0 && newIndex < count() && newIndex != currentIndex()) {
+ setCurrentIndex(newIndex);
+ d->emitActivated(d->currentIndex);
+ }
+ } else if (d->lineEdit) {
+ d->lineEdit->event(e);
+ }
+}
+
+
+/*!
+ \reimp
+*/
+void QComboBox::keyReleaseEvent(QKeyEvent *e)
+{
+ Q_D(QComboBox);
+ if (d->lineEdit)
+ d->lineEdit->event(e);
+}
+
+/*!
+ \reimp
+*/
+#ifndef QT_NO_WHEELEVENT
+void QComboBox::wheelEvent(QWheelEvent *e)
+{
+ Q_D(QComboBox);
+ if (!d->viewContainer()->isVisible()) {
+ int newIndex = currentIndex();
+
+ if (e->delta() > 0) {
+ newIndex--;
+ while ((newIndex >= 0) && !(d->model->flags(d->model->index(newIndex,d->modelColumn,d->root)) & Qt::ItemIsEnabled))
+ newIndex--;
+ } else {
+ newIndex++;
+ while ((newIndex < count()) && !(d->model->flags(d->model->index(newIndex,d->modelColumn,d->root)) & Qt::ItemIsEnabled))
+ newIndex++;
+ }
+
+ if (newIndex >= 0 && newIndex < count() && newIndex != currentIndex()) {
+ setCurrentIndex(newIndex);
+ d->emitActivated(d->currentIndex);
+ }
+ e->accept();
+ }
+}
+#endif
+
+#ifndef QT_NO_CONTEXTMENU
+/*!
+ \reimp
+*/
+void QComboBox::contextMenuEvent(QContextMenuEvent *e)
+{
+ Q_D(QComboBox);
+ if (d->lineEdit) {
+ Qt::ContextMenuPolicy p = d->lineEdit->contextMenuPolicy();
+ d->lineEdit->setContextMenuPolicy(Qt::DefaultContextMenu);
+ d->lineEdit->event(e);
+ d->lineEdit->setContextMenuPolicy(p);
+ }
+}
+#endif // QT_NO_CONTEXTMENU
+
+void QComboBoxPrivate::keyboardSearchString(const QString &text)
+{
+ // use keyboardSearch from the listView so we do not duplicate code
+ QAbstractItemView *view = viewContainer()->itemView();
+ view->setCurrentIndex(currentIndex);
+ int currentRow = view->currentIndex().row();
+ view->keyboardSearch(text);
+ if (currentRow != view->currentIndex().row()) {
+ setCurrentIndex(view->currentIndex());
+ emitActivated(currentIndex);
+ }
+}
+
+void QComboBoxPrivate::modelChanged()
+{
+ Q_Q(QComboBox);
+
+ if (sizeAdjustPolicy == QComboBox::AdjustToContents) {
+ sizeHint = QSize();
+ adjustComboBoxSize();
+ q->updateGeometry();
+ }
+}
+
+/*!
+ \reimp
+*/
+void QComboBox::inputMethodEvent(QInputMethodEvent *e)
+{
+ Q_D(QComboBox);
+ if (d->lineEdit) {
+ d->lineEdit->event(e);
+ } else {
+ if (!e->commitString().isEmpty())
+ d->keyboardSearchString(e->commitString());
+ else
+ e->ignore();
+ }
+}
+
+/*!
+ \reimp
+*/
+QVariant QComboBox::inputMethodQuery(Qt::InputMethodQuery query) const
+{
+ Q_D(const QComboBox);
+ if (d->lineEdit)
+ return d->lineEdit->inputMethodQuery(query);
+ return QWidget::inputMethodQuery(query);
+}
+
+/*!
+ \fn bool QComboBox::editable() const
+
+ Use isEditable() instead.
+*/
+
+/*!
+ \fn void QComboBox::insertItem(const QPixmap &pixmap, int index)
+
+ Use an insertItem() function that takes a QIcon instead, for
+ example, insertItem(index, QIcon(pixmap)).
+*/
+
+/*!
+ \fn void QComboBox::insertItem(const QPixmap &pixmap, const QString &text, int index)
+
+ Use an insertItem() function that takes a QIcon instead, for
+ example, insertItem(index, QIcon(pixmap), text).
+
+ \sa insertItems()
+*/
+
+/*!
+ \fn void QComboBox::changeItem(const QString &text, int index)
+
+ Use setItemText() instead.
+*/
+
+/*!
+ \fn void QComboBox::changeItem(const QPixmap &pixmap, int index)
+
+ Use setItemIcon() instead, for example,
+ setItemIcon(index, QIcon(pixmap)).
+*/
+
+/*!
+ \fn void QComboBox::changeItem(const QPixmap &pixmap, const QString &text, int index)
+
+ Use setItem() instead, for example, setItem(index, QIcon(pixmap),text).
+*/
+
+/*!
+ \fn void QComboBox::addItem(const QString &text, const QVariant &userData)
+
+ Adds an item to the combobox with the given \a text, and
+ containing the specified \a userData (stored in the Qt::UserRole).
+ The item is appended to the list of existing items.
+*/
+
+/*!
+ \fn void QComboBox::addItem(const QIcon &icon, const QString &text,
+ const QVariant &userData)
+
+ Adds an item to the combobox with the given \a icon and \a text,
+ and containing the specified \a userData (stored in the
+ Qt::UserRole). The item is appended to the list of existing items.
+*/
+
+/*!
+ \fn void QComboBox::addItems(const QStringList &texts)
+
+ Adds each of the strings in the given \a texts to the combobox. Each item
+ is appended to the list of existing items in turn.
+*/
+
+/*!
+ \fn void QComboBox::editTextChanged(const QString &text)
+
+ This signal is emitted when the text in the combobox's line edit
+ widget is changed. The new text is specified by \a text.
+*/
+
+/*!
+ \fn QComboBox::InsertPolicy QComboBox::insertionPolicy() const
+ \compat
+
+ Use QComboBox::insertPolicy instead.
+*/
+
+/*!
+ \fn void QComboBox::setInsertionPolicy(InsertPolicy policy)
+ \compat
+
+ Use QComboBox::insertPolicy instead.
+*/
+
+/*!
+ \fn void QComboBox::setCurrentText(const QString &text)
+ \compat
+
+ Use setItemText() instead.
+
+ \sa currentIndex()
+*/
+
+/*!
+ \fn QString QComboBox::text(int index) const
+ \compat
+
+ Use itemText() instead.
+*/
+
+/*!
+ \fn QPixmap QComboBox::pixmap(int index) const
+ \compat
+
+ Use itemIcon() instead.
+*/
+
+/*!
+ \fn void QComboBox::insertStringList(const QStringList &list, int index)
+ \compat
+
+ Use insertItems() instead.
+*/
+
+/*!
+ \fn void QComboBox::insertItem(const QString &text, int index)
+ \compat
+*/
+
+/*!
+ \fn void QComboBox::clearEdit()
+ \compat
+
+ Use clearEditText() instead.
+*/
+
+
+/*!
+ \property QComboBox::frame
+ \brief whether the combo box draws itself with a frame
+
+
+ If enabled (the default) the combo box draws itself inside a
+ frame, otherwise the combo box draws itself without any frame.
+*/
+bool QComboBox::hasFrame() const
+{
+ Q_D(const QComboBox);
+ return d->frame;
+}
+
+
+void QComboBox::setFrame(bool enable)
+{
+ Q_D(QComboBox);
+ d->frame = enable;
+ update();
+ updateGeometry();
+}
+
+/*!
+ \property QComboBox::modelColumn
+ \brief the column in the model that is visible.
+
+ If set prior to populating the combo box, the pop-up view will
+ not be affected and will show the first column (using this property's
+ default value).
+
+ By default, this property has a value of 0.
+*/
+int QComboBox::modelColumn() const
+{
+ Q_D(const QComboBox);
+ return d->modelColumn;
+}
+
+void QComboBox::setModelColumn(int visibleColumn)
+{
+ Q_D(QComboBox);
+ d->modelColumn = visibleColumn;
+ QListView *lv = qobject_cast<QListView *>(d->viewContainer()->itemView());
+ if (lv)
+ lv->setModelColumn(visibleColumn);
+#ifndef QT_NO_COMPLETER
+ if (d->lineEdit && d->lineEdit->completer()
+ && d->lineEdit->completer() == d->completer)
+ d->lineEdit->completer()->setCompletionColumn(visibleColumn);
+#endif
+ setCurrentIndex(currentIndex()); //update the text to the text of the new column;
+}
+
+/*!
+ \fn int QComboBox::currentItem() const
+
+ Use currentIndex() instead.
+*/
+
+/*!
+ \fn void QComboBox::setCurrentItem(int)
+
+ Use setCurrentIndex(int) instead.
+*/
+
+/*!
+ \fn void QComboBox::popup()
+
+ Use showPopup() instead.
+*/
+
+/*!
+ \fn void QComboBox::textChanged(const QString &text)
+
+ Use the editTextChanged(const QString &text) signal instead.
+*/
+
+/*!
+ \typedef QComboBox::Policy
+ \compat
+
+ Use QComboBox::InsertPolicy instead.
+*/
+
+QT_END_NAMESPACE
+
+#include "moc_qcombobox.cpp"
+
+#endif // QT_NO_COMBOBOX