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Diffstat (limited to 'src/gui/itemviews/qlistwidget.cpp')
| -rw-r--r-- | src/gui/itemviews/qlistwidget.cpp | 1914 |
1 files changed, 0 insertions, 1914 deletions
diff --git a/src/gui/itemviews/qlistwidget.cpp b/src/gui/itemviews/qlistwidget.cpp deleted file mode 100644 index 61a935fdc9..0000000000 --- a/src/gui/itemviews/qlistwidget.cpp +++ /dev/null @@ -1,1914 +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. -** -** $QT_BEGIN_LICENSE:LGPL$ -** 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 "qlistwidget.h" - -#ifndef QT_NO_LISTWIDGET -#include <qitemdelegate.h> -#include <private/qlistview_p.h> -#include <private/qwidgetitemdata_p.h> -#include <private/qlistwidget_p.h> - -QT_BEGIN_NAMESPACE - -// workaround for VC++ 6.0 linker bug (?) -typedef bool(*LessThan)(const QPair<QListWidgetItem*,int>&,const QPair<QListWidgetItem*,int>&); - -class QListWidgetMimeData : public QMimeData -{ - Q_OBJECT -public: - QList<QListWidgetItem*> items; -}; - -QT_BEGIN_INCLUDE_NAMESPACE -#include "qlistwidget.moc" -QT_END_INCLUDE_NAMESPACE - -QListModel::QListModel(QListWidget *parent) - : QAbstractListModel(parent) -{ -} - -QListModel::~QListModel() -{ - clear(); -} - -void QListModel::clear() -{ - for (int i = 0; i < items.count(); ++i) { - if (items.at(i)) { - items.at(i)->d->theid = -1; - items.at(i)->view = 0; - delete items.at(i); - } - } - items.clear(); - reset(); -} - -QListWidgetItem *QListModel::at(int row) const -{ - return items.value(row); -} - -void QListModel::remove(QListWidgetItem *item) -{ - if (!item) - return; - int row = items.indexOf(item); // ### use index(item) - it's faster - Q_ASSERT(row != -1); - beginRemoveRows(QModelIndex(), row, row); - items.at(row)->d->theid = -1; - items.at(row)->view = 0; - items.removeAt(row); - endRemoveRows(); -} - -void QListModel::insert(int row, QListWidgetItem *item) -{ - if (!item) - return; - - item->view = qobject_cast<QListWidget*>(QObject::parent()); - if (item->view && item->view->isSortingEnabled()) { - // sorted insertion - QList<QListWidgetItem*>::iterator it; - it = sortedInsertionIterator(items.begin(), items.end(), - item->view->sortOrder(), item); - row = qMax(it - items.begin(), 0); - } else { - if (row < 0) - row = 0; - else if (row > items.count()) - row = items.count(); - } - beginInsertRows(QModelIndex(), row, row); - items.insert(row, item); - item->d->theid = row; - endInsertRows(); -} - -void QListModel::insert(int row, const QStringList &labels) -{ - const int count = labels.count(); - if (count <= 0) - return; - QListWidget *view = qobject_cast<QListWidget*>(QObject::parent()); - if (view && view->isSortingEnabled()) { - // sorted insertion - for (int i = 0; i < count; ++i) { - QListWidgetItem *item = new QListWidgetItem(labels.at(i)); - insert(row, item); - } - } else { - if (row < 0) - row = 0; - else if (row > items.count()) - row = items.count(); - beginInsertRows(QModelIndex(), row, row + count - 1); - for (int i = 0; i < count; ++i) { - QListWidgetItem *item = new QListWidgetItem(labels.at(i)); - item->d->theid = row; - item->view = qobject_cast<QListWidget*>(QObject::parent()); - items.insert(row++, item); - } - endInsertRows(); - } -} - -QListWidgetItem *QListModel::take(int row) -{ - if (row < 0 || row >= items.count()) - return 0; - - beginRemoveRows(QModelIndex(), row, row); - items.at(row)->d->theid = -1; - items.at(row)->view = 0; - QListWidgetItem *item = items.takeAt(row); - endRemoveRows(); - return item; -} - -void QListModel::move(int srcRow, int dstRow) -{ - if (srcRow == dstRow - || srcRow < 0 || srcRow >= items.count() - || dstRow < 0 || dstRow > items.count()) - return; - - if (!beginMoveRows(QModelIndex(), srcRow, srcRow, QModelIndex(), dstRow)) - return; - if (srcRow < dstRow) - --dstRow; - items.move(srcRow, dstRow); - endMoveRows(); -} - -int QListModel::rowCount(const QModelIndex &parent) const -{ - return parent.isValid() ? 0 : items.count(); -} - -QModelIndex QListModel::index(QListWidgetItem *item) const -{ - if (!item || !item->view || static_cast<const QListModel *>(item->view->model()) != this - || items.isEmpty()) - return QModelIndex(); - int row; - const int theid = item->d->theid; - if (theid >= 0 && theid < items.count() && items.at(theid) == item) { - row = theid; - } else { // we need to search for the item - row = items.lastIndexOf(item); // lastIndexOf is an optimization in favor of indexOf - if (row == -1) // not found - return QModelIndex(); - item->d->theid = row; - } - return createIndex(row, 0, item); -} - -QModelIndex QListModel::index(int row, int column, const QModelIndex &parent) const -{ - if (hasIndex(row, column, parent)) - return createIndex(row, column, items.at(row)); - return QModelIndex(); -} - -QVariant QListModel::data(const QModelIndex &index, int role) const -{ - if (!index.isValid() || index.row() >= items.count()) - return QVariant(); - return items.at(index.row())->data(role); -} - -bool QListModel::setData(const QModelIndex &index, const QVariant &value, int role) -{ - if (!index.isValid() || index.row() >= items.count()) - return false; - items.at(index.row())->setData(role, value); - return true; -} - -QMap<int, QVariant> QListModel::itemData(const QModelIndex &index) const -{ - QMap<int, QVariant> roles; - if (!index.isValid() || index.row() >= items.count()) - return roles; - QListWidgetItem *itm = items.at(index.row()); - for (int i = 0; i < itm->d->values.count(); ++i) { - roles.insert(itm->d->values.at(i).role, - itm->d->values.at(i).value); - } - return roles; -} - -bool QListModel::insertRows(int row, int count, const QModelIndex &parent) -{ - if (count < 1 || row < 0 || row > rowCount() || parent.isValid()) - return false; - - beginInsertRows(QModelIndex(), row, row + count - 1); - QListWidget *view = qobject_cast<QListWidget*>(QObject::parent()); - QListWidgetItem *itm = 0; - - for (int r = row; r < row + count; ++r) { - itm = new QListWidgetItem; - itm->view = view; - itm->d->theid = r; - items.insert(r, itm); - } - - endInsertRows(); - return true; -} - -bool QListModel::removeRows(int row, int count, const QModelIndex &parent) -{ - if (count < 1 || row < 0 || (row + count) > rowCount() || parent.isValid()) - return false; - - beginRemoveRows(QModelIndex(), row, row + count - 1); - QListWidgetItem *itm = 0; - for (int r = row; r < row + count; ++r) { - itm = items.takeAt(row); - itm->view = 0; - itm->d->theid = -1; - delete itm; - } - endRemoveRows(); - return true; -} - -Qt::ItemFlags QListModel::flags(const QModelIndex &index) const -{ - if (!index.isValid() || index.row() >= items.count() || index.model() != this) - return Qt::ItemIsDropEnabled; // we allow drops outside the items - return items.at(index.row())->flags(); -} - -void QListModel::sort(int column, Qt::SortOrder order) -{ - if (column != 0) - return; - - emit layoutAboutToBeChanged(); - - QVector < QPair<QListWidgetItem*,int> > sorting(items.count()); - for (int i = 0; i < items.count(); ++i) { - QListWidgetItem *item = items.at(i); - sorting[i].first = item; - sorting[i].second = i; - } - - LessThan compare = (order == Qt::AscendingOrder ? &itemLessThan : &itemGreaterThan); - qSort(sorting.begin(), sorting.end(), compare); - QModelIndexList fromIndexes; - QModelIndexList toIndexes; - for (int r = 0; r < sorting.count(); ++r) { - QListWidgetItem *item = sorting.at(r).first; - toIndexes.append(createIndex(r, 0, item)); - fromIndexes.append(createIndex(sorting.at(r).second, 0, sorting.at(r).first)); - items[r] = sorting.at(r).first; - } - changePersistentIndexList(fromIndexes, toIndexes); - - emit layoutChanged(); -} - -/** - * This function assumes that all items in the model except the items that are between - * (inclusive) start and end are sorted. - * With these assumptions, this function can ensure that the model is sorted in a - * much more efficient way than doing a naive 'sort everything'. - * (provided that the range is relatively small compared to the total number of items) - */ -void QListModel::ensureSorted(int column, Qt::SortOrder order, int start, int end) -{ - if (column != 0) - return; - - int count = end - start + 1; - QVector < QPair<QListWidgetItem*,int> > sorting(count); - for (int i = 0; i < count; ++i) { - sorting[i].first = items.at(start + i); - sorting[i].second = start + i; - } - - LessThan compare = (order == Qt::AscendingOrder ? &itemLessThan : &itemGreaterThan); - qSort(sorting.begin(), sorting.end(), compare); - - QModelIndexList oldPersistentIndexes = persistentIndexList(); - QModelIndexList newPersistentIndexes = oldPersistentIndexes; - QList<QListWidgetItem*> tmp = items; - QList<QListWidgetItem*>::iterator lit = tmp.begin(); - bool changed = false; - for (int i = 0; i < count; ++i) { - int oldRow = sorting.at(i).second; - QListWidgetItem *item = tmp.takeAt(oldRow); - lit = sortedInsertionIterator(lit, tmp.end(), order, item); - int newRow = qMax(lit - tmp.begin(), 0); - lit = tmp.insert(lit, item); - if (newRow != oldRow) { - changed = true; - for (int j = i + 1; j < count; ++j) { - int otherRow = sorting.at(j).second; - if (oldRow < otherRow && newRow >= otherRow) - --sorting[j].second; - else if (oldRow > otherRow && newRow <= otherRow) - ++sorting[j].second; - } - for (int k = 0; k < newPersistentIndexes.count(); ++k) { - QModelIndex pi = newPersistentIndexes.at(k); - int oldPersistentRow = pi.row(); - int newPersistentRow = oldPersistentRow; - if (oldPersistentRow == oldRow) - newPersistentRow = newRow; - else if (oldRow < oldPersistentRow && newRow >= oldPersistentRow) - newPersistentRow = oldPersistentRow - 1; - else if (oldRow > oldPersistentRow && newRow <= oldPersistentRow) - newPersistentRow = oldPersistentRow + 1; - if (newPersistentRow != oldPersistentRow) - newPersistentIndexes[k] = createIndex(newPersistentRow, - pi.column(), pi.internalPointer()); - } - } - } - - if (changed) { - emit layoutAboutToBeChanged(); - items = tmp; - changePersistentIndexList(oldPersistentIndexes, newPersistentIndexes); - emit layoutChanged(); - } -} - -bool QListModel::itemLessThan(const QPair<QListWidgetItem*,int> &left, - const QPair<QListWidgetItem*,int> &right) -{ - return (*left.first) < (*right.first); -} - -bool QListModel::itemGreaterThan(const QPair<QListWidgetItem*,int> &left, - const QPair<QListWidgetItem*,int> &right) -{ - return (*right.first) < (*left.first); -} - -QList<QListWidgetItem*>::iterator QListModel::sortedInsertionIterator( - const QList<QListWidgetItem*>::iterator &begin, - const QList<QListWidgetItem*>::iterator &end, - Qt::SortOrder order, QListWidgetItem *item) -{ - if (order == Qt::AscendingOrder) - return qLowerBound(begin, end, item, QListModelLessThan()); - return qLowerBound(begin, end, item, QListModelGreaterThan()); -} - -void QListModel::itemChanged(QListWidgetItem *item) -{ - QModelIndex idx = index(item); - emit dataChanged(idx, idx); -} - -QStringList QListModel::mimeTypes() const -{ - const QListWidget *view = qobject_cast<const QListWidget*>(QObject::parent()); - return view->mimeTypes(); -} - -QMimeData *QListModel::internalMimeData() const -{ - return QAbstractItemModel::mimeData(cachedIndexes); -} - -QMimeData *QListModel::mimeData(const QModelIndexList &indexes) const -{ - QList<QListWidgetItem*> itemlist; - for (int i = 0; i < indexes.count(); ++i) - itemlist << at(indexes.at(i).row()); - const QListWidget *view = qobject_cast<const QListWidget*>(QObject::parent()); - - cachedIndexes = indexes; - QMimeData *mimeData = view->mimeData(itemlist); - cachedIndexes.clear(); - return mimeData; -} - -#ifndef QT_NO_DRAGANDDROP -bool QListModel::dropMimeData(const QMimeData *data, Qt::DropAction action, - int row, int column, const QModelIndex &index) -{ - Q_UNUSED(column); - QListWidget *view = qobject_cast<QListWidget*>(QObject::parent()); - if (index.isValid()) - row = index.row(); - else if (row == -1) - row = items.count(); - - return view->dropMimeData(row, data, action); -} - -Qt::DropActions QListModel::supportedDropActions() const -{ - const QListWidget *view = qobject_cast<const QListWidget*>(QObject::parent()); - return view->supportedDropActions(); -} -#endif // QT_NO_DRAGANDDROP - -/*! - \class QListWidgetItem - \brief The QListWidgetItem class provides an item for use with the - QListWidget item view class. - - \ingroup model-view - - A QListWidgetItem represents a single item in a QListWidget. Each item can - hold several pieces of information, and will display them appropriately. - - The item view convenience classes use a classic item-based interface rather - than a pure model/view approach. For a more flexible list view widget, - consider using the QListView class with a standard model. - - List items can be inserted automatically into a list, when they are - constructed, by specifying the list widget: - - \snippet doc/src/snippets/qlistwidget-using/mainwindow.cpp 2 - - Alternatively, list items can also be created without a parent widget, and - later inserted into a list using QListWidget::insertItem(). - - List items are typically used to display text() and an icon(). These are - set with the setText() and setIcon() functions. The appearance of the text - can be customized with setFont(), setForeground(), and setBackground(). - Text in list items can be aligned using the setTextAlignment() function. - Tooltips, status tips and "What's This?" help can be added to list items - with setToolTip(), setStatusTip(), and setWhatsThis(). - - By default, items are enabled, selectable, checkable, and can be the source - of drag and drop operations. - - Each item's flags can be changed by calling setFlags() with the appropriate - value (see Qt::ItemFlags). Checkable items can be checked, unchecked and - partially checked with the setCheckState() function. The corresponding - checkState() function indicates the item's current check state. - - The isHidden() function can be used to determine whether the item is - hidden. To hide an item, use setHidden(). - - - \section1 Subclassing - - When subclassing QListWidgetItem to provide custom items, it is possible to - define new types for them enabling them to be distinguished from standard - items. For subclasses that require this feature, ensure that you call the - base class constructor with a new type value equal to or greater than - \l UserType, within \e your constructor. - - \sa QListWidget, {Model/View Programming}, QTreeWidgetItem, QTableWidgetItem -*/ - -/*! - \enum QListWidgetItem::ItemType - - This enum describes the types that are used to describe list widget items. - - \value Type The default type for list widget items. - \value UserType The minimum value for custom types. Values below UserType are - reserved by Qt. - - You can define new user types in QListWidgetItem subclasses to ensure that - custom items are treated specially. - - \sa type() -*/ - -/*! - \fn int QListWidgetItem::type() const - - Returns the type passed to the QListWidgetItem constructor. -*/ - -/*! - \fn QListWidget *QListWidgetItem::listWidget() const - - Returns the list widget containing the item. -*/ - -/*! - \fn void QListWidgetItem::setSelected(bool select) - \since 4.2 - - Sets the selected state of the item to \a select. - - \sa isSelected() -*/ - -/*! - \fn bool QListWidgetItem::isSelected() const - \since 4.2 - - Returns true if the item is selected; otherwise returns false. - - \sa setSelected() -*/ - -/*! - \fn void QListWidgetItem::setHidden(bool hide) - \since 4.2 - - Hides the item if \a hide is true; otherwise shows the item. - - \sa isHidden() -*/ - -/*! - \fn bool QListWidgetItem::isHidden() const - \since 4.2 - - Returns true if the item is hidden; otherwise returns false. - - \sa setHidden() -*/ - -/*! - \fn QListWidgetItem::QListWidgetItem(QListWidget *parent, int type) - - Constructs an empty list widget item of the specified \a type with the - given \a parent. If \a parent is not specified, the item will need to be - inserted into a list widget with QListWidget::insertItem(). - - This constructor inserts the item into the model of the parent that is - passed to the constructor. If the model is sorted then the behavior of the - insert is undetermined since the model will call the \c '<' operator method - on the item which, at this point, is not yet constructed. To avoid the - undetermined behavior, we recommend not to specify the parent and use - QListWidget::insertItem() instead. - - \sa type() -*/ -QListWidgetItem::QListWidgetItem(QListWidget *view, int type) - : rtti(type), view(view), d(new QListWidgetItemPrivate(this)), - itemFlags(Qt::ItemIsSelectable - |Qt::ItemIsUserCheckable - |Qt::ItemIsEnabled - |Qt::ItemIsDragEnabled) -{ - if (QListModel *model = (view ? qobject_cast<QListModel*>(view->model()) : 0)) - model->insert(model->rowCount(), this); -} - -/*! - \fn QListWidgetItem::QListWidgetItem(const QString &text, QListWidget *parent, int type) - - Constructs an empty list widget item of the specified \a type with the - given \a text and \a parent. If the parent is not specified, the item will - need to be inserted into a list widget with QListWidget::insertItem(). - - This constructor inserts the item into the model of the parent that is - passed to the constructor. If the model is sorted then the behavior of the - insert is undetermined since the model will call the \c '<' operator method - on the item which, at this point, is not yet constructed. To avoid the - undetermined behavior, we recommend not to specify the parent and use - QListWidget::insertItem() instead. - - \sa type() -*/ -QListWidgetItem::QListWidgetItem(const QString &text, QListWidget *view, int type) - : rtti(type), view(0), d(new QListWidgetItemPrivate(this)), - itemFlags(Qt::ItemIsSelectable - |Qt::ItemIsUserCheckable - |Qt::ItemIsEnabled - |Qt::ItemIsDragEnabled) -{ - setData(Qt::DisplayRole, text); - this->view = view; - if (QListModel *model = (view ? qobject_cast<QListModel*>(view->model()) : 0)) - model->insert(model->rowCount(), this); -} - -/*! - \fn QListWidgetItem::QListWidgetItem(const QIcon &icon, const QString &text, QListWidget *parent, int type) - - Constructs an empty list widget item of the specified \a type with the - given \a icon, \a text and \a parent. If the parent is not specified, the - item will need to be inserted into a list widget with - QListWidget::insertItem(). - - This constructor inserts the item into the model of the parent that is - passed to the constructor. If the model is sorted then the behavior of the - insert is undetermined since the model will call the \c '<' operator method - on the item which, at this point, is not yet constructed. To avoid the - undetermined behavior, we recommend not to specify the parent and use - QListWidget::insertItem() instead. - - \sa type() -*/ -QListWidgetItem::QListWidgetItem(const QIcon &icon,const QString &text, - QListWidget *view, int type) - : rtti(type), view(0), d(new QListWidgetItemPrivate(this)), - itemFlags(Qt::ItemIsSelectable - |Qt::ItemIsUserCheckable - |Qt::ItemIsEnabled - |Qt::ItemIsDragEnabled) -{ - setData(Qt::DisplayRole, text); - setData(Qt::DecorationRole, icon); - this->view = view; - if (QListModel *model = (view ? qobject_cast<QListModel*>(view->model()) : 0)) - model->insert(model->rowCount(), this); -} - -/*! - Destroys the list item. -*/ -QListWidgetItem::~QListWidgetItem() -{ - if (QListModel *model = (view ? qobject_cast<QListModel*>(view->model()) : 0)) - model->remove(this); - delete d; -} - -/*! - Creates an exact copy of the item. -*/ -QListWidgetItem *QListWidgetItem::clone() const -{ - return new QListWidgetItem(*this); -} - -/*! - Sets the data for a given \a role to the given \a value. Reimplement this - function if you need extra roles or special behavior for certain roles. - - \sa Qt::ItemDataRole, data() -*/ -void QListWidgetItem::setData(int role, const QVariant &value) -{ - bool found = false; - role = (role == Qt::EditRole ? Qt::DisplayRole : role); - for (int i = 0; i < d->values.count(); ++i) { - if (d->values.at(i).role == role) { - if (d->values.at(i).value == value) - return; - d->values[i].value = value; - found = true; - break; - } - } - if (!found) - d->values.append(QWidgetItemData(role, value)); - if (QListModel *model = (view ? qobject_cast<QListModel*>(view->model()) : 0)) - model->itemChanged(this); -} - -/*! - Returns the item's data for a given \a role. Reimplement this function if - you need extra roles or special behavior for certain roles. - - \sa Qt::ItemDataRole, setData() -*/ -QVariant QListWidgetItem::data(int role) const -{ - role = (role == Qt::EditRole ? Qt::DisplayRole : role); - for (int i = 0; i < d->values.count(); ++i) - if (d->values.at(i).role == role) - return d->values.at(i).value; - return QVariant(); -} - -/*! - Returns true if this item's text is less then \a other item's text; - otherwise returns false. -*/ -bool QListWidgetItem::operator<(const QListWidgetItem &other) const -{ - const QVariant v1 = data(Qt::DisplayRole), v2 = other.data(Qt::DisplayRole); - return QAbstractItemModelPrivate::variantLessThan(v1, v2); -} - -#ifndef QT_NO_DATASTREAM - -/*! - Reads the item from stream \a in. - - \sa write() -*/ -void QListWidgetItem::read(QDataStream &in) -{ - in >> d->values; -} - -/*! - Writes the item to stream \a out. - - \sa read() -*/ -void QListWidgetItem::write(QDataStream &out) const -{ - out << d->values; -} -#endif // QT_NO_DATASTREAM - -/*! - \since 4.1 - - Constructs a copy of \a other. Note that type() and listWidget() are not - copied. - - This function is useful when reimplementing clone(). - - \sa data(), flags() -*/ -QListWidgetItem::QListWidgetItem(const QListWidgetItem &other) - : rtti(Type), view(0), - d(new QListWidgetItemPrivate(this)), - itemFlags(other.itemFlags) -{ - d->values = other.d->values; -} - -/*! - Assigns \a other's data and flags to this item. Note that type() and - listWidget() are not copied. - - This function is useful when reimplementing clone(). - - \sa data(), flags() -*/ -QListWidgetItem &QListWidgetItem::operator=(const QListWidgetItem &other) -{ - d->values = other.d->values; - itemFlags = other.itemFlags; - return *this; -} - -#ifndef QT_NO_DATASTREAM - -/*! - \relates QListWidgetItem - - Writes the list widget item \a item to stream \a out. - - This operator uses QListWidgetItem::write(). - - \sa {Serializing Qt Data Types} -*/ -QDataStream &operator<<(QDataStream &out, const QListWidgetItem &item) -{ - item.write(out); - return out; -} - -/*! - \relates QListWidgetItem - - Reads a list widget item from stream \a in into \a item. - - This operator uses QListWidgetItem::read(). - - \sa {Serializing Qt Data Types} -*/ -QDataStream &operator>>(QDataStream &in, QListWidgetItem &item) -{ - item.read(in); - return in; -} - -#endif // QT_NO_DATASTREAM - -/*! - \fn Qt::ItemFlags QListWidgetItem::flags() const - - Returns the item flags for this item (see \l{Qt::ItemFlags}). -*/ - -/*! - \fn QString QListWidgetItem::text() const - - Returns the list item's text. - - \sa setText() -*/ - -/*! - \fn QIcon QListWidgetItem::icon() const - - Returns the list item's icon. - - \sa setIcon(), {QAbstractItemView::iconSize}{iconSize} -*/ - -/*! - \fn QString QListWidgetItem::statusTip() const - - Returns the list item's status tip. - - \sa setStatusTip() -*/ - -/*! - \fn QString QListWidgetItem::toolTip() const - - Returns the list item's tooltip. - - \sa setToolTip() statusTip() whatsThis() -*/ - -/*! - \fn QString QListWidgetItem::whatsThis() const - - Returns the list item's "What's This?" help text. - - \sa setWhatsThis() statusTip() toolTip() -*/ - -/*! - \fn QFont QListWidgetItem::font() const - - Returns the font used to display this list item's text. -*/ - -/*! - \fn int QListWidgetItem::textAlignment() const - - Returns the text alignment for the list item. - - \sa Qt::AlignmentFlag -*/ - -/*! - \fn QColor QListWidgetItem::backgroundColor() const - \obsolete - - This function is deprecated. Use background() instead. -*/ - -/*! - \fn QBrush QListWidgetItem::background() const - \since 4.2 - - Returns the brush used to display the list item's background. - - \sa setBackground() foreground() -*/ - -/*! - \fn QColor QListWidgetItem::textColor() const - \obsolete - - Returns the color used to display the list item's text. - - This function is deprecated. Use foreground() instead. -*/ - -/*! - \fn QBrush QListWidgetItem::foreground() const - \since 4.2 - - Returns the brush used to display the list item's foreground (e.g. text). - - \sa setForeground() background() -*/ - -/*! - \fn Qt::CheckState QListWidgetItem::checkState() const - - Returns the checked state of the list item (see \l{Qt::CheckState}). - - \sa flags() -*/ - -/*! - \fn QSize QListWidgetItem::sizeHint() const - \since 4.1 - - Returns the size hint set for the list item. -*/ - -/*! - \fn void QListWidgetItem::setSizeHint(const QSize &size) - \since 4.1 - - Sets the size hint for the list item to be \a size. If no size hint is set, - the item delegate will compute the size hint based on the item data. -*/ - -/*! - \fn void QListWidgetItem::setFlags(Qt::ItemFlags flags) - - Sets the item flags for the list item to \a flags. - - \sa Qt::ItemFlags -*/ -void QListWidgetItem::setFlags(Qt::ItemFlags aflags) { - itemFlags = aflags; - if (QListModel *model = (view ? qobject_cast<QListModel*>(view->model()) : 0)) - model->itemChanged(this); -} - - -/*! - \fn void QListWidgetItem::setText(const QString &text) - - Sets the text for the list widget item's to the given \a text. - - \sa text() -*/ - -/*! - \fn void QListWidgetItem::setIcon(const QIcon &icon) - - Sets the icon for the list item to the given \a icon. - - \sa icon(), text(), {QAbstractItemView::iconSize}{iconSize} -*/ - -/*! - \fn void QListWidgetItem::setStatusTip(const QString &statusTip) - - Sets the status tip for the list item to the text specified by - \a statusTip. QListWidget mouseTracking needs to be enabled for this - feature to work. - - \sa statusTip(), setToolTip(), setWhatsThis(), QWidget::setMouseTracking() -*/ - -/*! - \fn void QListWidgetItem::setToolTip(const QString &toolTip) - - Sets the tooltip for the list item to the text specified by \a toolTip. - - \sa toolTip(), setStatusTip(), setWhatsThis() -*/ - -/*! - \fn void QListWidgetItem::setWhatsThis(const QString &whatsThis) - - Sets the "What's This?" help for the list item to the text specified by - \a whatsThis. - - \sa whatsThis(), setStatusTip(), setToolTip() -*/ - -/*! - \fn void QListWidgetItem::setFont(const QFont &font) - - Sets the font used when painting the item to the given \a font. -*/ - -/*! - \fn void QListWidgetItem::setTextAlignment(int alignment) - - Sets the list item's text alignment to \a alignment. - - \sa Qt::AlignmentFlag -*/ - -/*! - \fn void QListWidgetItem::setBackgroundColor(const QColor &color) - \obsolete - - This function is deprecated. Use setBackground() instead. -*/ - -/*! - \fn void QListWidgetItem::setBackground(const QBrush &brush) - \since 4.2 - - Sets the background brush of the list item to the given \a brush. - - \sa background() setForeground() -*/ - -/*! - \fn void QListWidgetItem::setTextColor(const QColor &color) - \obsolete - - This function is deprecated. Use setForeground() instead. -*/ - -/*! - \fn void QListWidgetItem::setForeground(const QBrush &brush) - \since 4.2 - - Sets the foreground brush of the list item to the given \a brush. - - \sa foreground() setBackground() -*/ - -/*! - \fn void QListWidgetItem::setCheckState(Qt::CheckState state) - - Sets the check state of the list item to \a state. - - \sa checkState() -*/ - -void QListWidgetPrivate::setup() -{ - Q_Q(QListWidget); - q->QListView::setModel(new QListModel(q)); - // view signals - QObject::connect(q, SIGNAL(pressed(QModelIndex)), q, SLOT(_q_emitItemPressed(QModelIndex))); - QObject::connect(q, SIGNAL(clicked(QModelIndex)), q, SLOT(_q_emitItemClicked(QModelIndex))); - QObject::connect(q, SIGNAL(doubleClicked(QModelIndex)), - q, SLOT(_q_emitItemDoubleClicked(QModelIndex))); - QObject::connect(q, SIGNAL(activated(QModelIndex)), - q, SLOT(_q_emitItemActivated(QModelIndex))); - QObject::connect(q, SIGNAL(entered(QModelIndex)), q, SLOT(_q_emitItemEntered(QModelIndex))); - QObject::connect(model, SIGNAL(dataChanged(QModelIndex,QModelIndex)), - q, SLOT(_q_emitItemChanged(QModelIndex))); - QObject::connect(q->selectionModel(), SIGNAL(currentChanged(QModelIndex,QModelIndex)), - q, SLOT(_q_emitCurrentItemChanged(QModelIndex,QModelIndex))); - QObject::connect(q->selectionModel(), SIGNAL(selectionChanged(QItemSelection,QItemSelection)), - q, SIGNAL(itemSelectionChanged())); - QObject::connect(model, SIGNAL(dataChanged(QModelIndex,QModelIndex)), - q, SLOT(_q_dataChanged(QModelIndex,QModelIndex))); - QObject::connect(model, SIGNAL(columnsRemoved(QModelIndex,int,int)), q, SLOT(_q_sort())); -} - -void QListWidgetPrivate::_q_emitItemPressed(const QModelIndex &index) -{ - Q_Q(QListWidget); - emit q->itemPressed(listModel()->at(index.row())); -} - -void QListWidgetPrivate::_q_emitItemClicked(const QModelIndex &index) -{ - Q_Q(QListWidget); - emit q->itemClicked(listModel()->at(index.row())); -} - -void QListWidgetPrivate::_q_emitItemDoubleClicked(const QModelIndex &index) -{ - Q_Q(QListWidget); - emit q->itemDoubleClicked(listModel()->at(index.row())); -} - -void QListWidgetPrivate::_q_emitItemActivated(const QModelIndex &index) -{ - Q_Q(QListWidget); - emit q->itemActivated(listModel()->at(index.row())); -} - -void QListWidgetPrivate::_q_emitItemEntered(const QModelIndex &index) -{ - Q_Q(QListWidget); - emit q->itemEntered(listModel()->at(index.row())); -} - -void QListWidgetPrivate::_q_emitItemChanged(const QModelIndex &index) -{ - Q_Q(QListWidget); - emit q->itemChanged(listModel()->at(index.row())); -} - -void QListWidgetPrivate::_q_emitCurrentItemChanged(const QModelIndex ¤t, - const QModelIndex &previous) -{ - Q_Q(QListWidget); - QPersistentModelIndex persistentCurrent = current; - QListWidgetItem *currentItem = listModel()->at(persistentCurrent.row()); - emit q->currentItemChanged(currentItem, listModel()->at(previous.row())); - - //persistentCurrent is invalid if something changed the model in response - //to the currentItemChanged signal emission and the item was removed - if (!persistentCurrent.isValid()) { - currentItem = 0; - } - - emit q->currentTextChanged(currentItem ? currentItem->text() : QString()); - emit q->currentRowChanged(persistentCurrent.row()); -} - -void QListWidgetPrivate::_q_sort() -{ - if (sortingEnabled) - model->sort(0, sortOrder); -} - -void QListWidgetPrivate::_q_dataChanged(const QModelIndex &topLeft, - const QModelIndex &bottomRight) -{ - if (sortingEnabled && topLeft.isValid() && bottomRight.isValid()) - listModel()->ensureSorted(topLeft.column(), sortOrder, - topLeft.row(), bottomRight.row()); -} - -/*! - \class QListWidget - \brief The QListWidget class provides an item-based list widget. - - \ingroup model-view - - - QListWidget is a convenience class that provides a list view similar to the - one supplied by QListView, but with a classic item-based interface for - adding and removing items. QListWidget uses an internal model to manage - each QListWidgetItem in the list. - - For a more flexible list view widget, use the QListView class with a - standard model. - - List widgets are constructed in the same way as other widgets: - - \snippet doc/src/snippets/qlistwidget-using/mainwindow.cpp 0 - - The selectionMode() of a list widget determines how many of the items in - the list can be selected at the same time, and whether complex selections - of items can be created. This can be set with the setSelectionMode() - function. - - There are two ways to add items to the list: they can be constructed with - the list widget as their parent widget, or they can be constructed with no - parent widget and added to the list later. If a list widget already exists - when the items are constructed, the first method is easier to use: - - \snippet doc/src/snippets/qlistwidget-using/mainwindow.cpp 1 - - If you need to insert a new item into the list at a particular position, it - is more required to construct the item without a parent widget and use the - insertItem() function to place it within the list. The list widget will - take ownership of the item. - - \snippet doc/src/snippets/qlistwidget-using/mainwindow.cpp 6 - \snippet doc/src/snippets/qlistwidget-using/mainwindow.cpp 7 - - For multiple items, insertItems() can be used instead. The number of items - in the list is found with the count() function. To remove items from the - list, use takeItem(). - - The current item in the list can be found with currentItem(), and changed - with setCurrentItem(). The user can also change the current item by - navigating with the keyboard or clicking on a different item. When the - current item changes, the currentItemChanged() signal is emitted with the - new current item and the item that was previously current. - - \table 100% - \row \o \inlineimage windowsxp-listview.png Screenshot of a Windows XP style list widget - \o \inlineimage macintosh-listview.png Screenshot of a Macintosh style table widget - \o \inlineimage plastique-listview.png Screenshot of a Plastique style table widget - \row \o A \l{Windows XP Style Widget Gallery}{Windows XP style} list widget. - \o A \l{Macintosh Style Widget Gallery}{Macintosh style} list widget. - \o A \l{Plastique Style Widget Gallery}{Plastique style} list widget. - \endtable - - \sa QListWidgetItem, QListView, QTreeView, {Model/View Programming}, - {Config Dialog Example} -*/ - -/*! - \fn void QListWidget::addItem(QListWidgetItem *item) - - Inserts the \a item at the end of the list widget. - - \warning A QListWidgetItem can only be added to a QListWidget once. Adding - the same QListWidgetItem multiple times to a QListWidget will result in - undefined behavior. - - \sa insertItem() -*/ - -/*! - \fn void QListWidget::addItem(const QString &label) - - Inserts an item with the text \a label at the end of the list widget. -*/ - -/*! - \fn void QListWidget::addItems(const QStringList &labels) - - Inserts items with the text \a labels at the end of the list widget. - - \sa insertItems() -*/ - -/*! - \fn void QListWidget::itemPressed(QListWidgetItem *item) - - This signal is emitted with the specified \a item when a mouse button is - pressed on an item in the widget. - - \sa itemClicked(), itemDoubleClicked() -*/ - -/*! - \fn void QListWidget::itemClicked(QListWidgetItem *item) - - This signal is emitted with the specified \a item when a mouse button is - clicked on an item in the widget. - - \sa itemPressed(), itemDoubleClicked() -*/ - -/*! - \fn void QListWidget::itemDoubleClicked(QListWidgetItem *item) - - This signal is emitted with the specified \a item when a mouse button is - double clicked on an item in the widget. - - \sa itemClicked(), itemPressed() -*/ - -/*! - \fn void QListWidget::itemActivated(QListWidgetItem *item) - - This signal is emitted when the \a item is activated. The \a item is - activated when the user clicks or double clicks on it, depending on the - system configuration. It is also activated when the user presses the - activation key (on Windows and X11 this is the \gui Return key, on Mac OS - X it is \key{Ctrl+0}). -*/ - -/*! - \fn void QListWidget::itemEntered(QListWidgetItem *item) - - This signal is emitted when the mouse cursor enters an item. The \a item is - the item entered. This signal is only emitted when mouseTracking is turned - on, or when a mouse button is pressed while moving into an item. - - \sa QWidget::setMouseTracking() -*/ - -/*! - \fn void QListWidget::itemChanged(QListWidgetItem *item) - - This signal is emitted whenever the data of \a item has changed. -*/ - -/*! - \fn void QListWidget::currentItemChanged(QListWidgetItem *current, QListWidgetItem *previous) - - This signal is emitted whenever the current item changes. - - \a previous is the item that previously had the focus; \a current is the - new current item. -*/ - -/*! - \fn void QListWidget::currentTextChanged(const QString ¤tText) - - This signal is emitted whenever the current item changes. - - \a currentText is the text data in the current item. If there is no current - item, the \a currentText is invalid. -*/ - -/*! - \fn void QListWidget::currentRowChanged(int currentRow) - - This signal is emitted whenever the current item changes. - - \a currentRow is the row of the current item. If there is no current item, - the \a currentRow is -1. -*/ - -/*! - \fn void QListWidget::itemSelectionChanged() - - This signal is emitted whenever the selection changes. - - \sa selectedItems(), QListWidgetItem::isSelected(), currentItemChanged() -*/ - -/*! - \since 4.3 - - \fn void QListWidget::removeItemWidget(QListWidgetItem *item) - - Removes the widget set on the given \a item. -*/ - -/*! - Constructs an empty QListWidget with the given \a parent. -*/ - -QListWidget::QListWidget(QWidget *parent) - : QListView(*new QListWidgetPrivate(), parent) -{ - Q_D(QListWidget); - d->setup(); -} - -/*! - Destroys the list widget and all its items. -*/ - -QListWidget::~QListWidget() -{ -} - -/*! - Returns the item that occupies the given \a row in the list if one has been - set; otherwise returns 0. - - \sa row() -*/ - -QListWidgetItem *QListWidget::item(int row) const -{ - Q_D(const QListWidget); - if (row < 0 || row >= d->model->rowCount()) - return 0; - return d->listModel()->at(row); -} - -/*! - Returns the row containing the given \a item. - - \sa item() -*/ - -int QListWidget::row(const QListWidgetItem *item) const -{ - Q_D(const QListWidget); - return d->listModel()->index(const_cast<QListWidgetItem*>(item)).row(); -} - - -/*! - Inserts the \a item at the position in the list given by \a row. - - \sa addItem() -*/ - -void QListWidget::insertItem(int row, QListWidgetItem *item) -{ - Q_D(QListWidget); - if (item && !item->view) - d->listModel()->insert(row, item); -} - -/*! - Inserts an item with the text \a label in the list widget at the position - given by \a row. - - \sa addItem() -*/ - -void QListWidget::insertItem(int row, const QString &label) -{ - Q_D(QListWidget); - d->listModel()->insert(row, new QListWidgetItem(label)); -} - -/*! - Inserts items from the list of \a labels into the list, starting at the - given \a row. - - \sa insertItem(), addItem() -*/ - -void QListWidget::insertItems(int row, const QStringList &labels) -{ - Q_D(QListWidget); - d->listModel()->insert(row, labels); -} - -/*! - Removes and returns the item from the given \a row in the list widget; - otherwise returns 0. - - Items removed from a list widget will not be managed by Qt, and will need - to be deleted manually. - - \sa insertItem(), addItem() -*/ - -QListWidgetItem *QListWidget::takeItem(int row) -{ - Q_D(QListWidget); - if (row < 0 || row >= d->model->rowCount()) - return 0; - return d->listModel()->take(row); -} - -/*! - \property QListWidget::count - \brief the number of items in the list including any hidden items. -*/ - -int QListWidget::count() const -{ - Q_D(const QListWidget); - return d->model->rowCount(); -} - -/*! - Returns the current item. -*/ -QListWidgetItem *QListWidget::currentItem() const -{ - Q_D(const QListWidget); - return d->listModel()->at(currentIndex().row()); -} - - -/*! - Sets the current item to \a item. - - Unless the selection mode is \l{QAbstractItemView::}{NoSelection}, - the item is also be selected. -*/ -void QListWidget::setCurrentItem(QListWidgetItem *item) -{ - setCurrentRow(row(item)); -} - -/*! - \since 4.4 - Set the current item to \a item, using the given \a command. -*/ -void QListWidget::setCurrentItem(QListWidgetItem *item, QItemSelectionModel::SelectionFlags command) -{ - setCurrentRow(row(item), command); -} - -/*! - \property QListWidget::currentRow - \brief the row of the current item. - - Depending on the current selection mode, the row may also be selected. -*/ - -int QListWidget::currentRow() const -{ - return currentIndex().row(); -} - -void QListWidget::setCurrentRow(int row) -{ - Q_D(QListWidget); - QModelIndex index = d->listModel()->index(row); - if (d->selectionMode == SingleSelection) - selectionModel()->setCurrentIndex(index, QItemSelectionModel::ClearAndSelect); - else if (d->selectionMode == NoSelection) - selectionModel()->setCurrentIndex(index, QItemSelectionModel::NoUpdate); - else - selectionModel()->setCurrentIndex(index, QItemSelectionModel::SelectCurrent); -} - -/*! - \since 4.4 - - Sets the current row to be the given \a row, using the given \a command, -*/ -void QListWidget::setCurrentRow(int row, QItemSelectionModel::SelectionFlags command) -{ - Q_D(QListWidget); - d->selectionModel->setCurrentIndex(d->listModel()->index(row), command); -} - -/*! - Returns a pointer to the item at the coordinates \a p. The coordinates - are relative to the list widget's \l{QAbstractScrollArea::}{viewport()}. - -*/ -QListWidgetItem *QListWidget::itemAt(const QPoint &p) const -{ - Q_D(const QListWidget); - return d->listModel()->at(indexAt(p).row()); - -} - -/*! - \fn QListWidgetItem *QListWidget::itemAt(int x, int y) const - \overload - - Returns a pointer to the item at the coordinates (\a x, \a y). - The coordinates are relative to the list widget's - \l{QAbstractScrollArea::}{viewport()}. - -*/ - - -/*! - Returns the rectangle on the viewport occupied by the item at \a item. -*/ -QRect QListWidget::visualItemRect(const QListWidgetItem *item) const -{ - Q_D(const QListWidget); - QModelIndex index = d->listModel()->index(const_cast<QListWidgetItem*>(item)); - return visualRect(index); -} - -/*! - Sorts all the items in the list widget according to the specified \a order. -*/ -void QListWidget::sortItems(Qt::SortOrder order) -{ - Q_D(QListWidget); - d->sortOrder = order; - d->listModel()->sort(0, order); -} - -/*! - \since 4.2 - \property QListWidget::sortingEnabled - \brief whether sorting is enabled - - If this property is true, sorting is enabled for the list; if the property - is false, sorting is not enabled. - - The default value is false. -*/ -void QListWidget::setSortingEnabled(bool enable) -{ - Q_D(QListWidget); - d->sortingEnabled = enable; -} - -bool QListWidget::isSortingEnabled() const -{ - Q_D(const QListWidget); - return d->sortingEnabled; -} - -/*! - \internal -*/ -Qt::SortOrder QListWidget::sortOrder() const -{ - Q_D(const QListWidget); - return d->sortOrder; -} - -/*! - Starts editing the \a item if it is editable. -*/ - -void QListWidget::editItem(QListWidgetItem *item) -{ - Q_D(QListWidget); - edit(d->listModel()->index(item)); -} - -/*! - Opens an editor for the given \a item. The editor remains open after - editing. - - \sa closePersistentEditor() -*/ -void QListWidget::openPersistentEditor(QListWidgetItem *item) -{ - Q_D(QListWidget); - QModelIndex index = d->listModel()->index(item); - QAbstractItemView::openPersistentEditor(index); -} - -/*! - Closes the persistent editor for the given \a item. - - \sa openPersistentEditor() -*/ -void QListWidget::closePersistentEditor(QListWidgetItem *item) -{ - Q_D(QListWidget); - QModelIndex index = d->listModel()->index(item); - QAbstractItemView::closePersistentEditor(index); -} - -/*! - \since 4.1 - - Returns the widget displayed in the given \a item. -*/ -QWidget *QListWidget::itemWidget(QListWidgetItem *item) const -{ - Q_D(const QListWidget); - QModelIndex index = d->listModel()->index(item); - return QAbstractItemView::indexWidget(index); -} - -/*! - \since 4.1 - - Sets the \a widget to be displayed in the give \a item. - - This function should only be used to display static content in the place of - a list widget item. If you want to display custom dynamic content or - implement a custom editor widget, use QListView and subclass QItemDelegate - instead. - - \sa {Delegate Classes} -*/ -void QListWidget::setItemWidget(QListWidgetItem *item, QWidget *widget) -{ - Q_D(QListWidget); - QModelIndex index = d->listModel()->index(item); - QAbstractItemView::setIndexWidget(index, widget); -} - -/*! - Returns true if \a item is selected; otherwise returns false. - - \obsolete - - This function is deprecated. Use QListWidgetItem::isSelected() instead. -*/ -bool QListWidget::isItemSelected(const QListWidgetItem *item) const -{ - Q_D(const QListWidget); - QModelIndex index = d->listModel()->index(const_cast<QListWidgetItem*>(item)); - return selectionModel()->isSelected(index); -} - -/*! - Selects or deselects the given \a item depending on whether \a select is - true of false. - - \obsolete - - This function is deprecated. Use QListWidgetItem::setSelected() instead. -*/ -void QListWidget::setItemSelected(const QListWidgetItem *item, bool select) -{ - Q_D(QListWidget); - QModelIndex index = d->listModel()->index(const_cast<QListWidgetItem*>(item)); - - if (d->selectionMode == SingleSelection) { - selectionModel()->select(index, select - ? QItemSelectionModel::ClearAndSelect - : QItemSelectionModel::Deselect); - } else if (d->selectionMode != NoSelection) { - selectionModel()->select(index, select - ? QItemSelectionModel::Select - : QItemSelectionModel::Deselect); - } - -} - -/*! - Returns a list of all selected items in the list widget. -*/ - -QList<QListWidgetItem*> QListWidget::selectedItems() const -{ - Q_D(const QListWidget); - QModelIndexList indexes = selectionModel()->selectedIndexes(); - QList<QListWidgetItem*> items; - for (int i = 0; i < indexes.count(); ++i) - items.append(d->listModel()->at(indexes.at(i).row())); - return items; -} - -/*! - Finds items with the text that matches the string \a text using the given - \a flags. -*/ - -QList<QListWidgetItem*> QListWidget::findItems(const QString &text, Qt::MatchFlags flags) const -{ - Q_D(const QListWidget); - QModelIndexList indexes = d->listModel()->match(model()->index(0, 0, QModelIndex()), - Qt::DisplayRole, text, -1, flags); - QList<QListWidgetItem*> items; - for (int i = 0; i < indexes.size(); ++i) - items.append(d->listModel()->at(indexes.at(i).row())); - return items; -} - -/*! - Returns true if the \a item is explicitly hidden; otherwise returns false. - - \obsolete - - This function is deprecated. Use QListWidgetItem::isHidden() instead. -*/ -bool QListWidget::isItemHidden(const QListWidgetItem *item) const -{ - return isRowHidden(row(item)); -} - -/*! - If \a hide is true, the \a item will be hidden; otherwise it will be shown. - - \obsolete - - This function is deprecated. Use QListWidgetItem::setHidden() instead. -*/ -void QListWidget::setItemHidden(const QListWidgetItem *item, bool hide) -{ - setRowHidden(row(item), hide); -} - -/*! - Scrolls the view if necessary to ensure that the \a item is visible. - - \a hint specifies where the \a item should be located after the operation. -*/ - -void QListWidget::scrollToItem(const QListWidgetItem *item, QAbstractItemView::ScrollHint hint) -{ - Q_D(QListWidget); - QModelIndex index = d->listModel()->index(const_cast<QListWidgetItem*>(item)); - QListView::scrollTo(index, hint); -} - -/*! - Removes all items and selections in the view. - - \warning All items will be permanently deleted. -*/ -void QListWidget::clear() -{ - Q_D(QListWidget); - selectionModel()->clear(); - d->listModel()->clear(); -} - -/*! - Returns a list of MIME types that can be used to describe a list of - listwidget items. - - \sa mimeData() -*/ -QStringList QListWidget::mimeTypes() const -{ - return d_func()->listModel()->QAbstractListModel::mimeTypes(); -} - -/*! - Returns an object that contains a serialized description of the specified - \a items. The format used to describe the items is obtained from the - mimeTypes() function. - - If the list of items is empty, 0 is returned instead of a serialized empty - list. -*/ -QMimeData *QListWidget::mimeData(const QList<QListWidgetItem*>) const -{ - return d_func()->listModel()->internalMimeData(); -} - -#ifndef QT_NO_DRAGANDDROP -/*! - Handles \a data supplied by an external drag and drop operation that ended - with the given \a action in the given \a index. Returns true if \a data and - \a action can be handled by the model; otherwise returns false. - - \sa supportedDropActions() -*/ -bool QListWidget::dropMimeData(int index, const QMimeData *data, Qt::DropAction action) -{ - QModelIndex idx; - int row = index; - int column = 0; - if (dropIndicatorPosition() == QAbstractItemView::OnItem) { - // QAbstractListModel::dropMimeData will overwrite on the index if row == -1 and column == -1 - idx = model()->index(row, column); - row = -1; - column = -1; - } - return d_func()->listModel()->QAbstractListModel::dropMimeData(data, action , row, column, idx); -} - -/*! \reimp */ -void QListWidget::dropEvent(QDropEvent *event) { - Q_D(QListWidget); - if (event->source() == this && d->movement != Static) { - QListView::dropEvent(event); - return; - } - - if (event->source() == this && (event->dropAction() == Qt::MoveAction || - dragDropMode() == QAbstractItemView::InternalMove)) { - QModelIndex topIndex; - int col = -1; - int row = -1; - if (d->dropOn(event, &row, &col, &topIndex)) { - QList<QModelIndex> selIndexes = selectedIndexes(); - QList<QPersistentModelIndex> persIndexes; - for (int i = 0; i < selIndexes.count(); i++) - persIndexes.append(selIndexes.at(i)); - - if (persIndexes.contains(topIndex)) - return; - qSort(persIndexes); // The dropped items will remain in the same visual order. - - QPersistentModelIndex dropRow = model()->index(row, col, topIndex); - - int r = row == -1 ? count() : (dropRow.row() >= 0 ? dropRow.row() : row); - for (int i = 0; i < persIndexes.count(); ++i) { - const QPersistentModelIndex &pIndex = persIndexes.at(i); - d->listModel()->move(pIndex.row(), r); - r = pIndex.row() + 1; // Dropped items are inserted contiguously and in the right order. - } - - event->accept(); - // Don't want QAbstractItemView to delete it because it was "moved" we already did it - event->setDropAction(Qt::CopyAction); - } - } - - QListView::dropEvent(event); -} - -/*! - Returns the drop actions supported by this view. - - \sa Qt::DropActions -*/ -Qt::DropActions QListWidget::supportedDropActions() const -{ - Q_D(const QListWidget); - return d->listModel()->QAbstractListModel::supportedDropActions() | Qt::MoveAction; -} -#endif // QT_NO_DRAGANDDROP - -/*! - Returns a list of pointers to the items contained in the \a data object. If - the object was not created by a QListWidget in the same process, the list - is empty. -*/ -QList<QListWidgetItem*> QListWidget::items(const QMimeData *data) const -{ - const QListWidgetMimeData *lwd = qobject_cast<const QListWidgetMimeData*>(data); - if (lwd) - return lwd->items; - return QList<QListWidgetItem*>(); -} - -/*! - Returns the QModelIndex assocated with the given \a item. -*/ - -QModelIndex QListWidget::indexFromItem(QListWidgetItem *item) const -{ - Q_D(const QListWidget); - return d->listModel()->index(item); -} - -/*! - Returns a pointer to the QListWidgetItem assocated with the given \a index. -*/ - -QListWidgetItem *QListWidget::itemFromIndex(const QModelIndex &index) const -{ - Q_D(const QListWidget); - if (d->isIndexValid(index)) - return d->listModel()->at(index.row()); - return 0; -} - -/*! - \internal -*/ -void QListWidget::setModel(QAbstractItemModel * /*model*/) -{ - Q_ASSERT(!"QListWidget::setModel() - Changing the model of the QListWidget is not allowed."); -} - -/*! - \reimp -*/ -bool QListWidget::event(QEvent *e) -{ - return QListView::event(e); -} - -QT_END_NAMESPACE - -#include "moc_qlistwidget.cpp" - -#endif // QT_NO_LISTWIDGET |