| author | eckhart.koppen@nokia.com |
| Wed, 31 Mar 2010 11:06:36 +0300 | |
| changeset 7 | f7bc934e204c |
| parent 0 | 1918ee327afb |
| child 33 | 3e2da88830cd |
| permissions | -rw-r--r-- |
| 0 | 1 |
/**************************************************************************** |
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** |
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7
f7bc934e204c
5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
0
diff
changeset
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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** All rights reserved. |
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** Contact: Nokia Corporation (qt-info@nokia.com) |
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** |
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** This file is part of the QtGui module of the Qt Toolkit. |
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** |
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** $QT_BEGIN_LICENSE:LGPL$ |
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** No Commercial Usage |
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** This file contains pre-release code and may not be distributed. |
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** You may use this file in accordance with the terms and conditions |
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** contained in the Technology Preview License Agreement accompanying |
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** this package. |
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** |
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** GNU Lesser General Public License Usage |
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** Alternatively, this file may be used under the terms of the GNU Lesser |
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** General Public License version 2.1 as published by the Free Software |
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** Foundation and appearing in the file LICENSE.LGPL included in the |
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** packaging of this file. Please review the following information to |
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** ensure the GNU Lesser General Public License version 2.1 requirements |
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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** |
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** In addition, as a special exception, Nokia gives you certain additional |
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** rights. These rights are described in the Nokia Qt LGPL Exception |
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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** |
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** If you have questions regarding the use of this file, please contact |
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** Nokia at qt-info@nokia.com. |
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** |
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** |
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** |
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** |
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** |
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** |
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** |
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** |
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** $QT_END_LICENSE$ |
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** |
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****************************************************************************/ |
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#include "qstandarditemmodel.h" |
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||
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#ifndef QT_NO_STANDARDITEMMODEL |
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45 |
||
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#include <QtCore/qdatetime.h> |
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#include <QtCore/qlist.h> |
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#include <QtCore/qmap.h> |
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#include <QtCore/qpair.h> |
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#include <QtCore/qvariant.h> |
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#include <QtCore/qvector.h> |
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#include <QtCore/qstringlist.h> |
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#include <QtCore/qbitarray.h> |
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#include <QtCore/qmimedata.h> |
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||
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#include <private/qstandarditemmodel_p.h> |
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#include <qdebug.h> |
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||
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QT_BEGIN_NAMESPACE |
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||
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class QStandardItemModelLessThan |
|
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{
|
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public: |
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inline QStandardItemModelLessThan() |
|
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{ }
|
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||
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inline bool operator()(const QPair<QStandardItem*, int> &l, |
|
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const QPair<QStandardItem*, int> &r) const |
|
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{
|
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return *(l.first) < *(r.first); |
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} |
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}; |
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||
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class QStandardItemModelGreaterThan |
|
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{
|
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public: |
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inline QStandardItemModelGreaterThan() |
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{ }
|
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||
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inline bool operator()(const QPair<QStandardItem*, int> &l, |
|
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const QPair<QStandardItem*, int> &r) const |
|
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{
|
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return *(r.first) < *(l.first); |
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} |
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}; |
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||
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/*! |
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\internal |
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*/ |
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QStandardItemPrivate::~QStandardItemPrivate() |
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{
|
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QVector<QStandardItem*>::const_iterator it; |
|
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for (it = children.constBegin(); it != children.constEnd(); ++it) {
|
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QStandardItem *child = *it; |
|
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if (child) |
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child->d_func()->setModel(0); |
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delete child; |
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} |
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children.clear(); |
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if (parent && model) |
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parent->d_func()->childDeleted(q_func()); |
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} |
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||
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/*! |
|
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\internal |
|
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*/ |
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QPair<int, int> QStandardItemPrivate::position() const |
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{
|
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if (QStandardItem *par = parent) {
|
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int idx = par->d_func()->childIndex(q_func()); |
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if (idx == -1) |
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return QPair<int, int>(-1, -1); |
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return QPair<int, int>(idx / par->columnCount(), idx % par->columnCount()); |
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} |
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// ### support header items? |
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return QPair<int, int>(-1, -1); |
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} |
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||
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/*! |
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\internal |
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*/ |
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void QStandardItemPrivate::setChild(int row, int column, QStandardItem *item, |
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bool emitChanged) |
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{
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Q_Q(QStandardItem); |
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if (item == q) {
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qWarning("QStandardItem::setChild: Can't make an item a child of itself %p",
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item); |
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return; |
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} |
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if ((row < 0) || (column < 0)) |
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return; |
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if (rows <= row) |
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q->setRowCount(row + 1); |
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if (columns <= column) |
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q->setColumnCount(column + 1); |
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int index = childIndex(row, column); |
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Q_ASSERT(index != -1); |
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QStandardItem *oldItem = children.at(index); |
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if (item == oldItem) |
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return; |
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if (item) {
|
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if (item->d_func()->parent == 0) {
|
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item->d_func()->setParentAndModel(q, model); |
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} else {
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qWarning("QStandardItem::setChild: Ignoring duplicate insertion of item %p",
|
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item); |
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return; |
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} |
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} |
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if (oldItem) |
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oldItem->d_func()->setModel(0); |
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delete oldItem; |
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children.replace(index, item); |
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if (emitChanged && model) |
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model->d_func()->itemChanged(item); |
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} |
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||
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||
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/*! |
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\internal |
|
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*/ |
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void QStandardItemPrivate::changeFlags(bool enable, Qt::ItemFlags f) |
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{
|
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Q_Q(QStandardItem); |
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Qt::ItemFlags flags = q->flags(); |
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if (enable) |
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flags |= f; |
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else |
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flags &= ~f; |
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q->setFlags(flags); |
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} |
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||
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/*! |
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\internal |
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*/ |
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void QStandardItemPrivate::childDeleted(QStandardItem *child) |
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{
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int index = childIndex(child); |
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Q_ASSERT(index != -1); |
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children.replace(index, 0); |
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} |
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||
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/*! |
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\internal |
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*/ |
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void QStandardItemPrivate::setItemData(const QMap<int, QVariant> &roles) |
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{
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Q_Q(QStandardItem); |
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//let's build the vector of new values |
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QVector<QWidgetItemData> newValues; |
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QMap<int, QVariant>::const_iterator it; |
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for (it = roles.begin(); it != roles.end(); ++it) {
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QVariant value = it.value(); |
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if (value.isValid()) {
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int role = it.key(); |
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role = (role == Qt::EditRole) ? Qt::DisplayRole : role; |
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QWidgetItemData wid(role,it.value()); |
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newValues.append(wid); |
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} |
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} |
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if (values!=newValues) {
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values=newValues; |
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if (model) |
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model->d_func()->itemChanged(q); |
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} |
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} |
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/*! |
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\internal |
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*/ |
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const QMap<int, QVariant> QStandardItemPrivate::itemData() const |
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{
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QMap<int, QVariant> result; |
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QVector<QWidgetItemData>::const_iterator it; |
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for (it = values.begin(); it != values.end(); ++it) |
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result.insert((*it).role, (*it).value); |
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return result; |
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} |
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/*! |
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\internal |
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*/ |
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void QStandardItemPrivate::sortChildren(int column, Qt::SortOrder order) |
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{
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Q_Q(QStandardItem); |
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if (column >= columnCount()) |
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return; |
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QVector<QPair<QStandardItem*, int> > sortable; |
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QVector<int> unsortable; |
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sortable.reserve(rowCount()); |
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unsortable.reserve(rowCount()); |
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for (int row = 0; row < rowCount(); ++row) {
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QStandardItem *itm = q->child(row, column); |
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if (itm) |
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sortable.append(QPair<QStandardItem*,int>(itm, row)); |
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else |
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unsortable.append(row); |
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} |
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if (order == Qt::AscendingOrder) {
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QStandardItemModelLessThan lt; |
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qStableSort(sortable.begin(), sortable.end(), lt); |
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} else {
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QStandardItemModelGreaterThan gt; |
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qStableSort(sortable.begin(), sortable.end(), gt); |
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} |
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QModelIndexList changedPersistentIndexesFrom, changedPersistentIndexesTo; |
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QVector<QStandardItem*> sorted_children(children.count()); |
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for (int i = 0; i < rowCount(); ++i) {
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int r = (i < sortable.count() |
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? sortable.at(i).second |
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: unsortable.at(i - sortable.count())); |
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for (int c = 0; c < columnCount(); ++c) {
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QStandardItem *itm = q->child(r, c); |
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sorted_children[childIndex(i, c)] = itm; |
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if (model) {
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QModelIndex from = model->createIndex(r, c, q); |
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if (model->d_func()->persistent.indexes.contains(from)) {
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QModelIndex to = model->createIndex(i, c, q); |
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changedPersistentIndexesFrom.append(from); |
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changedPersistentIndexesTo.append(to); |
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} |
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} |
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} |
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} |
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children = sorted_children; |
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if (model) {
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model->changePersistentIndexList(changedPersistentIndexesFrom, changedPersistentIndexesTo); |
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} |
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QVector<QStandardItem*>::iterator it; |
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for (it = children.begin(); it != children.end(); ++it) {
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if (*it) |
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(*it)->d_func()->sortChildren(column, order); |
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} |
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} |
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/*! |
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\internal |
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set the model of this item and all its children |
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*/ |
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void QStandardItemPrivate::setModel(QStandardItemModel *mod) |
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{
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if (children.isEmpty()) {
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if (model) |
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model->d_func()->invalidatePersistentIndex(model->indexFromItem(q_ptr)); |
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model = mod; |
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} else {
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QStack<QStandardItem*> stack; |
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stack.push(q_ptr); |
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while (!stack.isEmpty()) {
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QStandardItem *itm = stack.pop(); |
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if (itm->d_func()->model) {
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itm->d_func()->model->d_func()->invalidatePersistentIndex(itm->d_func()->model->indexFromItem(itm)); |
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} |
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itm->d_func()->model = mod; |
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const QVector<QStandardItem*> &childList = itm->d_func()->children; |
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for (int i = 0; i < childList.count(); ++i) {
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QStandardItem *chi = childList.at(i); |
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if (chi) |
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stack.push(chi); |
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} |
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} |
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} |
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} |
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||
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/*! |
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\internal |
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*/ |
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QStandardItemModelPrivate::QStandardItemModelPrivate() |
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: root(new QStandardItem), |
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itemPrototype(0), |
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sortRole(Qt::DisplayRole) |
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{
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root->setFlags(Qt::ItemIsDropEnabled); |
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} |
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||
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/*! |
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\internal |
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*/ |
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QStandardItemModelPrivate::~QStandardItemModelPrivate() |
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{
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delete itemPrototype; |
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qDeleteAll(columnHeaderItems); |
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qDeleteAll(rowHeaderItems); |
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} |
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||
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/*! |
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\internal |
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*/ |
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void QStandardItemModelPrivate::init() |
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{
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Q_Q(QStandardItemModel); |
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QObject::connect(q, SIGNAL(dataChanged(QModelIndex,QModelIndex)), |
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q, SLOT(_q_emitItemChanged(QModelIndex,QModelIndex))); |
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} |
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||
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/*! |
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\internal |
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*/ |
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350 |
void QStandardItemModelPrivate::_q_emitItemChanged(const QModelIndex &topLeft, |
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const QModelIndex &bottomRight) |
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{
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Q_Q(QStandardItemModel); |
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QModelIndex parent = topLeft.parent(); |
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for (int row = topLeft.row(); row <= bottomRight.row(); ++row) {
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for (int column = topLeft.column(); column <= bottomRight.column(); ++column) {
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QModelIndex index = q->index(row, column, parent); |
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if (QStandardItem *item = itemFromIndex(index)) |
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emit q->itemChanged(item); |
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} |
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} |
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362 |
} |
|
363 |
||
364 |
/*! |
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365 |
\internal |
|
366 |
*/ |
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367 |
bool QStandardItemPrivate::insertRows(int row, const QList<QStandardItem*> &items) |
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368 |
{
|
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Q_Q(QStandardItem); |
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370 |
if ((row < 0) || (row > rowCount())) |
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371 |
return false; |
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372 |
int count = items.count(); |
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if (model) |
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model->d_func()->rowsAboutToBeInserted(q, row, row + count - 1); |
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375 |
if (rowCount() == 0) {
|
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376 |
if (columnCount() == 0) |
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q->setColumnCount(1); |
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children.resize(columnCount() * count); |
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379 |
rows = count; |
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} else {
|
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rows += count; |
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382 |
int index = childIndex(row, 0); |
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if (index != -1) |
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children.insert(index, columnCount() * count, 0); |
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} |
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386 |
for (int i = 0; i < items.count(); ++i) {
|
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QStandardItem *item = items.at(i); |
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item->d_func()->model = model; |
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item->d_func()->parent = q; |
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390 |
int index = childIndex(i + row, 0); |
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children.replace(index, item); |
|
392 |
} |
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393 |
if (model) |
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394 |
model->d_func()->rowsInserted(q, row, count); |
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395 |
return true; |
|
396 |
} |
|
397 |
||
398 |
bool QStandardItemPrivate::insertRows(int row, int count, const QList<QStandardItem*> &items) |
|
399 |
{
|
|
400 |
Q_Q(QStandardItem); |
|
401 |
if ((count < 1) || (row < 0) || (row > rowCount())) |
|
402 |
return false; |
|
403 |
if (model) |
|
404 |
model->d_func()->rowsAboutToBeInserted(q, row, row + count - 1); |
|
405 |
if (rowCount() == 0) {
|
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406 |
children.resize(columnCount() * count); |
|
407 |
rows = count; |
|
408 |
} else {
|
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409 |
rows += count; |
|
410 |
int index = childIndex(row, 0); |
|
411 |
if (index != -1) |
|
412 |
children.insert(index, columnCount() * count, 0); |
|
413 |
} |
|
414 |
if (!items.isEmpty()) {
|
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415 |
int index = childIndex(row, 0); |
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416 |
int limit = qMin(items.count(), columnCount() * count); |
|
417 |
for (int i = 0; i < limit; ++i) {
|
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418 |
QStandardItem *item = items.at(i); |
|
419 |
if (item) {
|
|
420 |
if (item->d_func()->parent == 0) {
|
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421 |
item->d_func()->setParentAndModel(q, model); |
|
422 |
} else {
|
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423 |
qWarning("QStandardItem::insertRows: Ignoring duplicate insertion of item %p",
|
|
424 |
item); |
|
425 |
item = 0; |
|
426 |
} |
|
427 |
} |
|
428 |
children.replace(index, item); |
|
429 |
++index; |
|
430 |
} |
|
431 |
} |
|
432 |
if (model) |
|
433 |
model->d_func()->rowsInserted(q, row, count); |
|
434 |
return true; |
|
435 |
} |
|
436 |
||
437 |
/*! |
|
438 |
\internal |
|
439 |
*/ |
|
440 |
bool QStandardItemPrivate::insertColumns(int column, int count, const QList<QStandardItem*> &items) |
|
441 |
{
|
|
442 |
Q_Q(QStandardItem); |
|
443 |
if ((count < 1) || (column < 0) || (column > columnCount())) |
|
444 |
return false; |
|
445 |
if (model) |
|
446 |
model->d_func()->columnsAboutToBeInserted(q, column, column + count - 1); |
|
447 |
if (columnCount() == 0) {
|
|
448 |
children.resize(rowCount() * count); |
|
449 |
columns = count; |
|
450 |
} else {
|
|
451 |
columns += count; |
|
452 |
int index = childIndex(0, column); |
|
453 |
for (int row = 0; row < rowCount(); ++row) {
|
|
454 |
children.insert(index, count, 0); |
|
455 |
index += columnCount(); |
|
456 |
} |
|
457 |
} |
|
458 |
if (!items.isEmpty()) {
|
|
459 |
int limit = qMin(items.count(), rowCount() * count); |
|
460 |
for (int i = 0; i < limit; ++i) {
|
|
461 |
QStandardItem *item = items.at(i); |
|
462 |
if (item) {
|
|
463 |
if (item->d_func()->parent == 0) {
|
|
464 |
item->d_func()->setParentAndModel(q, model); |
|
465 |
} else {
|
|
466 |
qWarning("QStandardItem::insertColumns: Ignoring duplicate insertion of item %p",
|
|
467 |
item); |
|
468 |
item = 0; |
|
469 |
} |
|
470 |
} |
|
471 |
int r = i / count; |
|
472 |
int c = column + (i % count); |
|
473 |
int index = childIndex(r, c); |
|
474 |
children.replace(index, item); |
|
475 |
} |
|
476 |
} |
|
477 |
if (model) |
|
478 |
model->d_func()->columnsInserted(q, column, count); |
|
479 |
return true; |
|
480 |
} |
|
481 |
||
482 |
/*! |
|
483 |
\internal |
|
484 |
*/ |
|
485 |
void QStandardItemModelPrivate::itemChanged(QStandardItem *item) |
|
486 |
{
|
|
487 |
Q_Q(QStandardItemModel); |
|
488 |
if (item->d_func()->parent == 0) {
|
|
489 |
// Header item |
|
490 |
int idx = columnHeaderItems.indexOf(item); |
|
491 |
if (idx != -1) {
|
|
492 |
emit q->headerDataChanged(Qt::Horizontal, idx, idx); |
|
493 |
} else {
|
|
494 |
idx = rowHeaderItems.indexOf(item); |
|
495 |
if (idx != -1) |
|
496 |
emit q->headerDataChanged(Qt::Vertical, idx, idx); |
|
497 |
} |
|
498 |
} else {
|
|
499 |
// Normal item |
|
500 |
QModelIndex index = q->indexFromItem(item); |
|
501 |
emit q->dataChanged(index, index); |
|
502 |
} |
|
503 |
} |
|
504 |
||
505 |
/*! |
|
506 |
\internal |
|
507 |
*/ |
|
508 |
void QStandardItemModelPrivate::rowsAboutToBeInserted(QStandardItem *parent, |
|
509 |
int start, int end) |
|
510 |
{
|
|
511 |
Q_Q(QStandardItemModel); |
|
512 |
QModelIndex index = q->indexFromItem(parent); |
|
513 |
q->beginInsertRows(index, start, end); |
|
514 |
} |
|
515 |
||
516 |
/*! |
|
517 |
\internal |
|
518 |
*/ |
|
519 |
void QStandardItemModelPrivate::columnsAboutToBeInserted(QStandardItem *parent, |
|
520 |
int start, int end) |
|
521 |
{
|
|
522 |
Q_Q(QStandardItemModel); |
|
523 |
QModelIndex index = q->indexFromItem(parent); |
|
524 |
q->beginInsertColumns(index, start, end); |
|
525 |
} |
|
526 |
||
527 |
/*! |
|
528 |
\internal |
|
529 |
*/ |
|
530 |
void QStandardItemModelPrivate::rowsAboutToBeRemoved(QStandardItem *parent, |
|
531 |
int start, int end) |
|
532 |
{
|
|
533 |
Q_Q(QStandardItemModel); |
|
534 |
QModelIndex index = q->indexFromItem(parent); |
|
535 |
q->beginRemoveRows(index, start, end); |
|
536 |
} |
|
537 |
||
538 |
/*! |
|
539 |
\internal |
|
540 |
*/ |
|
541 |
void QStandardItemModelPrivate::columnsAboutToBeRemoved(QStandardItem *parent, |
|
542 |
int start, int end) |
|
543 |
{
|
|
544 |
Q_Q(QStandardItemModel); |
|
545 |
QModelIndex index = q->indexFromItem(parent); |
|
546 |
q->beginRemoveColumns(index, start, end); |
|
547 |
} |
|
548 |
||
549 |
/*! |
|
550 |
\internal |
|
551 |
*/ |
|
552 |
void QStandardItemModelPrivate::rowsInserted(QStandardItem *parent, |
|
553 |
int row, int count) |
|
554 |
{
|
|
555 |
Q_Q(QStandardItemModel); |
|
556 |
if (parent == root.data()) |
|
557 |
rowHeaderItems.insert(row, count, 0); |
|
558 |
q->endInsertRows(); |
|
559 |
} |
|
560 |
||
561 |
/*! |
|
562 |
\internal |
|
563 |
*/ |
|
564 |
void QStandardItemModelPrivate::columnsInserted(QStandardItem *parent, |
|
565 |
int column, int count) |
|
566 |
{
|
|
567 |
Q_Q(QStandardItemModel); |
|
568 |
if (parent == root.data()) |
|
569 |
columnHeaderItems.insert(column, count, 0); |
|
570 |
q->endInsertColumns(); |
|
571 |
} |
|
572 |
||
573 |
/*! |
|
574 |
\internal |
|
575 |
*/ |
|
576 |
void QStandardItemModelPrivate::rowsRemoved(QStandardItem *parent, |
|
577 |
int row, int count) |
|
578 |
{
|
|
579 |
Q_Q(QStandardItemModel); |
|
580 |
if (parent == root.data()) {
|
|
581 |
for (int i = row; i < row + count; ++i) {
|
|
582 |
QStandardItem *oldItem = rowHeaderItems.at(i); |
|
583 |
if (oldItem) |
|
584 |
oldItem->d_func()->setModel(0); |
|
585 |
delete oldItem; |
|
586 |
} |
|
587 |
rowHeaderItems.remove(row, count); |
|
588 |
} |
|
589 |
q->endRemoveRows(); |
|
590 |
} |
|
591 |
||
592 |
/*! |
|
593 |
\internal |
|
594 |
*/ |
|
595 |
void QStandardItemModelPrivate::columnsRemoved(QStandardItem *parent, |
|
596 |
int column, int count) |
|
597 |
{
|
|
598 |
Q_Q(QStandardItemModel); |
|
599 |
if (parent == root.data()) {
|
|
600 |
for (int i = column; i < column + count; ++i) {
|
|
601 |
QStandardItem *oldItem = columnHeaderItems.at(i); |
|
602 |
if (oldItem) |
|
603 |
oldItem->d_func()->setModel(0); |
|
604 |
delete oldItem; |
|
605 |
} |
|
606 |
columnHeaderItems.remove(column, count); |
|
607 |
} |
|
608 |
q->endRemoveColumns(); |
|
609 |
} |
|
610 |
||
611 |
/*! |
|
612 |
\class QStandardItem |
|
613 |
\brief The QStandardItem class provides an item for use with the |
|
614 |
QStandardItemModel class. |
|
615 |
\since 4.2 |
|
616 |
\ingroup model-view |
|
617 |
||
618 |
Items usually contain text, icons, or checkboxes. |
|
619 |
||
620 |
Each item can have its own background brush which is set with the |
|
621 |
setBackground() function. The current background brush can be found with |
|
622 |
background(). The text label for each item can be rendered with its own |
|
623 |
font and brush. These are specified with the setFont() and setForeground() |
|
624 |
functions, and read with font() and foreground(). |
|
625 |
||
626 |
By default, items are enabled, editable, selectable, checkable, and can be |
|
627 |
used both as the source of a drag and drop operation and as a drop target. |
|
628 |
Each item's flags can be changed by calling setFlags(). Checkable items |
|
629 |
can be checked and unchecked with the setCheckState() function. The |
|
630 |
corresponding checkState() function indicates whether the item is |
|
631 |
currently checked. |
|
632 |
||
633 |
You can store application-specific data in an item by calling setData(). |
|
634 |
||
635 |
Each item can have a two-dimensional table of child items. This makes it |
|
636 |
possible to build hierarchies of items. The typical hierarchy is the tree, |
|
637 |
in which case the child table is a table with a single column (a list). |
|
638 |
||
639 |
The dimensions of the child table can be set with setRowCount() and |
|
640 |
setColumnCount(). Items can be positioned in the child table with |
|
641 |
setChild(). Get a pointer to a child item with child(). New rows and |
|
642 |
columns of children can also be inserted with insertRow() and |
|
643 |
insertColumn(), or appended with appendRow() and appendColumn(). When |
|
644 |
using the append and insert functions, the dimensions of the child table |
|
645 |
will grow as needed. |
|
646 |
||
647 |
An existing row of children can be removed with removeRow() or takeRow(); |
|
648 |
correspondingly, a column can be removed with removeColumn() or |
|
649 |
takeColumn(). |
|
650 |
||
651 |
An item's children can be sorted by calling sortChildren(). |
|
652 |
||
653 |
\section1 Subclassing |
|
654 |
||
655 |
When subclassing QStandardItem to provide custom items, it is possible to |
|
656 |
define new types for them so that they can be distinguished from the base |
|
657 |
class. The type() function should be reimplemented to return a new type |
|
658 |
value equal to or greater than \l UserType. |
|
659 |
||
660 |
Reimplement data() and setData() if you want to perform custom handling of |
|
661 |
data queries and/or control how an item's data is represented. |
|
662 |
||
663 |
Reimplement clone() if you want QStandardItemModel to be able to create |
|
664 |
instances of your custom item class on demand (see |
|
665 |
QStandardItemModel::setItemPrototype()). |
|
666 |
||
667 |
Reimplement read() and write() if you want to control how items are |
|
668 |
represented in their serialized form. |
|
669 |
||
670 |
Reimplement \l{operator<()} if you want to control the semantics of item
|
|
671 |
comparison. \l{operator<()} determines the sorted order when sorting items
|
|
672 |
with sortChildren() or with QStandardItemModel::sort(). |
|
673 |
||
674 |
\sa QStandardItemModel, {Item View Convenience Classes}, {Model/View Programming}
|
|
675 |
*/ |
|
676 |
||
677 |
/*! |
|
678 |
\enum QStandardItem::ItemType |
|
679 |
||
680 |
This enum describes the types that are used to describe standard items. |
|
681 |
||
682 |
\value Type The default type for standard items. |
|
683 |
\value UserType The minimum value for custom types. Values below UserType are |
|
684 |
reserved by Qt. |
|
685 |
||
686 |
You can define new user types in QStandardItem subclasses to ensure that |
|
687 |
custom items are treated specially; for example, when items are sorted. |
|
688 |
||
689 |
\sa type() |
|
690 |
*/ |
|
691 |
||
692 |
/*! |
|
693 |
Constructs an item. |
|
694 |
*/ |
|
695 |
QStandardItem::QStandardItem() |
|
696 |
: d_ptr(new QStandardItemPrivate) |
|
697 |
{
|
|
698 |
Q_D(QStandardItem); |
|
699 |
d->q_ptr = this; |
|
700 |
} |
|
701 |
||
702 |
/*! |
|
703 |
Constructs an item with the given \a text. |
|
704 |
*/ |
|
705 |
QStandardItem::QStandardItem(const QString &text) |
|
706 |
: d_ptr(new QStandardItemPrivate) |
|
707 |
{
|
|
708 |
Q_D(QStandardItem); |
|
709 |
d->q_ptr = this; |
|
710 |
setText(text); |
|
711 |
} |
|
712 |
||
713 |
/*! |
|
714 |
Constructs an item with the given \a icon and \a text. |
|
715 |
*/ |
|
716 |
QStandardItem::QStandardItem(const QIcon &icon, const QString &text) |
|
717 |
: d_ptr(new QStandardItemPrivate) |
|
718 |
{
|
|
719 |
Q_D(QStandardItem); |
|
720 |
d->q_ptr = this; |
|
721 |
setIcon(icon); |
|
722 |
setText(text); |
|
723 |
} |
|
724 |
||
725 |
/*! |
|
726 |
Constructs an item with \a rows rows and \a columns columns of child items. |
|
727 |
*/ |
|
728 |
QStandardItem::QStandardItem(int rows, int columns) |
|
729 |
: d_ptr(new QStandardItemPrivate) |
|
730 |
{
|
|
731 |
Q_D(QStandardItem); |
|
732 |
d->q_ptr = this; |
|
733 |
setRowCount(rows); |
|
734 |
setColumnCount(columns); |
|
735 |
} |
|
736 |
||
737 |
/*! |
|
738 |
\internal |
|
739 |
*/ |
|
740 |
QStandardItem::QStandardItem(QStandardItemPrivate &dd) |
|
741 |
: d_ptr(&dd) |
|
742 |
{
|
|
743 |
Q_D(QStandardItem); |
|
744 |
d->q_ptr = this; |
|
745 |
} |
|
746 |
||
747 |
/*! |
|
748 |
Constructs a copy of \a other. Note that model() is |
|
749 |
not copied. |
|
750 |
||
751 |
This function is useful when reimplementing clone(). |
|
752 |
*/ |
|
753 |
QStandardItem::QStandardItem(const QStandardItem &other) |
|
754 |
: d_ptr(new QStandardItemPrivate) |
|
755 |
{
|
|
756 |
Q_D(QStandardItem); |
|
757 |
d->q_ptr = this; |
|
758 |
operator=(other); |
|
759 |
} |
|
760 |
||
761 |
/*! |
|
762 |
Assigns \a other's data and flags to this item. Note that |
|
763 |
type() and model() are not copied. |
|
764 |
||
765 |
This function is useful when reimplementing clone(). |
|
766 |
*/ |
|
767 |
QStandardItem &QStandardItem::operator=(const QStandardItem &other) |
|
768 |
{
|
|
769 |
Q_D(QStandardItem); |
|
770 |
d->values = other.d_func()->values; |
|
771 |
return *this; |
|
772 |
} |
|
773 |
||
774 |
/*! |
|
775 |
Destructs the item. |
|
776 |
This causes the item's children to be destructed as well. |
|
777 |
*/ |
|
778 |
QStandardItem::~QStandardItem() |
|
779 |
{
|
|
780 |
} |
|
781 |
||
782 |
/*! |
|
783 |
Returns the item's parent item, or 0 if the item has no parent. |
|
784 |
||
785 |
\sa child() |
|
786 |
*/ |
|
787 |
QStandardItem *QStandardItem::parent() const |
|
788 |
{
|
|
789 |
Q_D(const QStandardItem); |
|
790 |
if (!d->model || (d->model->d_func()->root.data() != d->parent)) |
|
791 |
return d->parent; |
|
792 |
return 0; |
|
793 |
} |
|
794 |
||
795 |
/*! |
|
796 |
Sets the item's data for the given \a role to the specified \a value. |
|
797 |
||
798 |
If you subclass QStandardItem and reimplement this function, your |
|
799 |
reimplementation should call emitDataChanged() if you do not call |
|
800 |
the base implementation of setData(). This will ensure that e.g. |
|
801 |
views using the model are notified of the changes. |
|
802 |
||
803 |
\note The default implementation treats Qt::EditRole and Qt::DisplayRole |
|
804 |
as referring to the same data. |
|
805 |
||
806 |
\sa Qt::ItemDataRole, data(), setFlags() |
|
807 |
*/ |
|
808 |
void QStandardItem::setData(const QVariant &value, int role) |
|
809 |
{
|
|
810 |
Q_D(QStandardItem); |
|
811 |
role = (role == Qt::EditRole) ? Qt::DisplayRole : role; |
|
812 |
QVector<QWidgetItemData>::iterator it; |
|
813 |
for (it = d->values.begin(); it != d->values.end(); ++it) {
|
|
814 |
if ((*it).role == role) {
|
|
815 |
if (value.isValid()) {
|
|
816 |
if ((*it).value.type() == value.type() && (*it).value == value) |
|
817 |
return; |
|
818 |
(*it).value = value; |
|
819 |
} else {
|
|
820 |
d->values.erase(it); |
|
821 |
} |
|
822 |
if (d->model) |
|
823 |
d->model->d_func()->itemChanged(this); |
|
824 |
return; |
|
825 |
} |
|
826 |
} |
|
827 |
d->values.append(QWidgetItemData(role, value)); |
|
828 |
if (d->model) |
|
829 |
d->model->d_func()->itemChanged(this); |
|
830 |
} |
|
831 |
||
832 |
/*! |
|
833 |
Returns the item's data for the given \a role, or an invalid |
|
834 |
QVariant if there is no data for the role. |
|
835 |
||
836 |
\note The default implementation treats Qt::EditRole and Qt::DisplayRole |
|
837 |
as referring to the same data. |
|
838 |
*/ |
|
839 |
QVariant QStandardItem::data(int role) const |
|
840 |
{
|
|
841 |
Q_D(const QStandardItem); |
|
842 |
role = (role == Qt::EditRole) ? Qt::DisplayRole : role; |
|
843 |
QVector<QWidgetItemData>::const_iterator it; |
|
844 |
for (it = d->values.begin(); it != d->values.end(); ++it) {
|
|
845 |
if ((*it).role == role) |
|
846 |
return (*it).value; |
|
847 |
} |
|
848 |
return QVariant(); |
|
849 |
} |
|
850 |
||
851 |
/*! |
|
852 |
\since 4.4 |
|
853 |
||
854 |
Causes the model associated with this item to emit a |
|
855 |
\l{QAbstractItemModel::dataChanged()}{dataChanged}() signal for this
|
|
856 |
item. |
|
857 |
||
858 |
You normally only need to call this function if you have subclassed |
|
859 |
QStandardItem and reimplemented data() and/or setData(). |
|
860 |
||
861 |
\sa setData() |
|
862 |
*/ |
|
863 |
void QStandardItem::emitDataChanged() |
|
864 |
{
|
|
865 |
Q_D(QStandardItem); |
|
866 |
if (d->model) |
|
867 |
d->model->d_func()->itemChanged(this); |
|
868 |
} |
|
869 |
||
870 |
/*! |
|
871 |
Sets the item flags for the item to \a flags. |
|
872 |
||
873 |
The item flags determine how the user can interact with the item. |
|
874 |
This is often used to disable an item. |
|
875 |
||
876 |
\sa flags(), setData() |
|
877 |
*/ |
|
878 |
void QStandardItem::setFlags(Qt::ItemFlags flags) |
|
879 |
{
|
|
880 |
setData((int)flags, Qt::UserRole - 1); |
|
881 |
} |
|
882 |
||
883 |
/*! |
|
884 |
Returns the item flags for the item. |
|
885 |
||
886 |
The item flags determine how the user can interact with the item. |
|
887 |
||
888 |
By default, items are enabled, editable, selectable, checkable, and can be |
|
889 |
used both as the source of a drag and drop operation and as a drop target. |
|
890 |
||
891 |
\sa setFlags() |
|
892 |
*/ |
|
893 |
Qt::ItemFlags QStandardItem::flags() const |
|
894 |
{
|
|
895 |
QVariant v = data(Qt::UserRole - 1); |
|
896 |
if (!v.isValid()) |
|
897 |
return (Qt::ItemIsSelectable|Qt::ItemIsEnabled|Qt::ItemIsEditable |
|
898 |
|Qt::ItemIsDragEnabled|Qt::ItemIsDropEnabled); |
|
899 |
return Qt::ItemFlags(v.toInt()); |
|
900 |
} |
|
901 |
||
902 |
/*! |
|
903 |
\fn QString QStandardItem::text() const |
|
904 |
||
905 |
Returns the item's text. This is the text that's presented to the user |
|
906 |
in a view. |
|
907 |
||
908 |
\sa setText() |
|
909 |
*/ |
|
910 |
||
911 |
/*! |
|
912 |
\fn void QStandardItem::setText(const QString &text) |
|
913 |
||
914 |
Sets the item's text to the \a text specified. |
|
915 |
||
916 |
\sa text(), setFont(), setForeground() |
|
917 |
*/ |
|
918 |
||
919 |
/*! |
|
920 |
\fn QIcon QStandardItem::icon() const |
|
921 |
||
922 |
Returns the item's icon. |
|
923 |
||
924 |
\sa setIcon(), {QAbstractItemView::iconSize}{iconSize}
|
|
925 |
*/ |
|
926 |
||
927 |
/*! |
|
928 |
\fn void QStandardItem::setIcon(const QIcon &icon) |
|
929 |
||
930 |
Sets the item's icon to the \a icon specified. |
|
931 |
*/ |
|
932 |
||
933 |
/*! |
|
934 |
\fn QString QStandardItem::statusTip() const |
|
935 |
||
936 |
Returns the item's status tip. |
|
937 |
||
938 |
\sa setStatusTip(), toolTip(), whatsThis() |
|
939 |
*/ |
|
940 |
||
941 |
/*! |
|
942 |
\fn void QStandardItem::setStatusTip(const QString &statusTip) |
|
943 |
||
944 |
Sets the item's status tip to the string specified by \a statusTip. |
|
945 |
||
946 |
\sa statusTip(), setToolTip(), setWhatsThis() |
|
947 |
*/ |
|
948 |
||
949 |
/*! |
|
950 |
\fn QString QStandardItem::toolTip() const |
|
951 |
||
952 |
Returns the item's tooltip. |
|
953 |
||
954 |
\sa setToolTip(), statusTip(), whatsThis() |
|
955 |
*/ |
|
956 |
||
957 |
/*! |
|
958 |
\fn void QStandardItem::setToolTip(const QString &toolTip) |
|
959 |
||
960 |
Sets the item's tooltip to the string specified by \a toolTip. |
|
961 |
||
962 |
\sa toolTip(), setStatusTip(), setWhatsThis() |
|
963 |
*/ |
|
964 |
||
965 |
/*! |
|
966 |
\fn QString QStandardItem::whatsThis() const |
|
967 |
||
968 |
Returns the item's "What's This?" help. |
|
969 |
||
970 |
\sa setWhatsThis(), toolTip(), statusTip() |
|
971 |
*/ |
|
972 |
||
973 |
/*! |
|
974 |
\fn void QStandardItem::setWhatsThis(const QString &whatsThis) |
|
975 |
||
976 |
Sets the item's "What's This?" help to the string specified by \a whatsThis. |
|
977 |
||
978 |
\sa whatsThis(), setStatusTip(), setToolTip() |
|
979 |
*/ |
|
980 |
||
981 |
/*! |
|
982 |
\fn QFont QStandardItem::font() const |
|
983 |
||
984 |
Returns the font used to render the item's text. |
|
985 |
||
986 |
\sa setFont() |
|
987 |
*/ |
|
988 |
||
989 |
/*! |
|
990 |
\fn void QStandardItem::setFont(const QFont &font) |
|
991 |
||
992 |
Sets the font used to display the item's text to the given \a font. |
|
993 |
||
994 |
\sa font() setText() setForeground() |
|
995 |
*/ |
|
996 |
||
997 |
/*! |
|
998 |
\fn QBrush QStandardItem::background() const |
|
999 |
||
1000 |
Returns the brush used to render the item's background. |
|
1001 |
||
1002 |
\sa foreground() setBackground() |
|
1003 |
*/ |
|
1004 |
||
1005 |
/*! |
|
1006 |
\fn void QStandardItem::setBackground(const QBrush &brush) |
|
1007 |
||
1008 |
Sets the item's background brush to the specified \a brush. |
|
1009 |
||
1010 |
\sa background() setForeground() |
|
1011 |
*/ |
|
1012 |
||
1013 |
/*! |
|
1014 |
\fn QBrush QStandardItem::foreground() const |
|
1015 |
||
1016 |
Returns the brush used to render the item's foreground (e.g. text). |
|
1017 |
||
1018 |
\sa setForeground() background() |
|
1019 |
*/ |
|
1020 |
||
1021 |
/*! |
|
1022 |
\fn void QStandardItem::setForeground(const QBrush &brush) |
|
1023 |
||
1024 |
Sets the brush used to display the item's foreground (e.g. text) to the |
|
1025 |
given \a brush. |
|
1026 |
||
1027 |
\sa foreground() setBackground() setFont() |
|
1028 |
*/ |
|
1029 |
||
1030 |
/*! |
|
1031 |
\fn int QStandardItem::textAlignment() const |
|
1032 |
||
1033 |
Returns the text alignment for the item's text. |
|
1034 |
*/ |
|
1035 |
||
1036 |
/*! |
|
1037 |
\fn void QStandardItem::setTextAlignment(Qt::Alignment alignment) |
|
1038 |
||
1039 |
Sets the text alignment for the item's text to the \a alignment |
|
1040 |
specified. |
|
1041 |
||
1042 |
\sa textAlignment() |
|
1043 |
*/ |
|
1044 |
||
1045 |
/*! |
|
1046 |
\fn QSize QStandardItem::sizeHint() const |
|
1047 |
||
1048 |
Returns the size hint set for the item, or an invalid QSize if no |
|
1049 |
size hint has been set. |
|
1050 |
||
1051 |
If no size hint has been set, the item delegate will compute the |
|
1052 |
size hint based on the item data. |
|
1053 |
||
1054 |
\sa setSizeHint() |
|
1055 |
*/ |
|
1056 |
||
1057 |
/*! |
|
1058 |
\fn void QStandardItem::setSizeHint(const QSize &size) |
|
1059 |
||
1060 |
Sets the size hint for the item to be \a size. |
|
1061 |
If no size hint is set, the item delegate will compute the |
|
1062 |
size hint based on the item data. |
|
1063 |
||
1064 |
\sa sizeHint() |
|
1065 |
*/ |
|
1066 |
||
1067 |
/*! |
|
1068 |
\fn Qt::CheckState QStandardItem::checkState() const |
|
1069 |
||
1070 |
Returns the checked state of the item. |
|
1071 |
||
1072 |
\sa setCheckState(), isCheckable() |
|
1073 |
*/ |
|
1074 |
||
1075 |
/*! |
|
1076 |
\fn void QStandardItem::setCheckState(Qt::CheckState state) |
|
1077 |
||
1078 |
Sets the check state of the item to be \a state. |
|
1079 |
||
1080 |
\sa checkState(), setCheckable() |
|
1081 |
*/ |
|
1082 |
||
1083 |
/*! |
|
1084 |
\fn QString QStandardItem::accessibleText() const |
|
1085 |
||
1086 |
Returns the item's accessible text. |
|
1087 |
||
1088 |
The accessible text is used by assistive technologies (i.e. for users who |
|
1089 |
cannot use conventional means of interaction). |
|
1090 |
||
1091 |
\sa setAccessibleText(), accessibleDescription() |
|
1092 |
*/ |
|
1093 |
||
1094 |
/*! |
|
1095 |
\fn void QStandardItem::setAccessibleText(const QString &accessibleText) |
|
1096 |
||
1097 |
Sets the item's accessible text to the string specified by \a accessibleText. |
|
1098 |
||
1099 |
The accessible text is used by assistive technologies (i.e. for users who |
|
1100 |
cannot use conventional means of interaction). |
|
1101 |
||
1102 |
\sa accessibleText(), setAccessibleDescription() |
|
1103 |
*/ |
|
1104 |
||
1105 |
/*! |
|
1106 |
\fn QString QStandardItem::accessibleDescription() const |
|
1107 |
||
1108 |
Returns the item's accessible description. |
|
1109 |
||
1110 |
The accessible description is used by assistive technologies (i.e. for |
|
1111 |
users who cannot use conventional means of interaction). |
|
1112 |
||
1113 |
\sa setAccessibleDescription(), accessibleText() |
|
1114 |
*/ |
|
1115 |
||
1116 |
/*! |
|
1117 |
\fn void QStandardItem::setAccessibleDescription(const QString &accessibleDescription) |
|
1118 |
||
1119 |
Sets the item's accessible description to the string specified by \a |
|
1120 |
accessibleDescription. |
|
1121 |
||
1122 |
The accessible description is used by assistive technologies (i.e. for |
|
1123 |
users who cannot use conventional means of interaction). |
|
1124 |
||
1125 |
\sa accessibleDescription(), setAccessibleText() |
|
1126 |
*/ |
|
1127 |
||
1128 |
/*! |
|
1129 |
Sets whether the item is enabled. If \a enabled is true, the item is enabled, |
|
1130 |
meaning that the user can interact with the item; if \a enabled is false, the |
|
1131 |
user cannot interact with the item. |
|
1132 |
||
1133 |
This flag takes presedence over the other item flags; e.g. if an item is not |
|
1134 |
enabled, it cannot be selected by the user, even if the Qt::ItemIsSelectable |
|
1135 |
flag has been set. |
|
1136 |
||
1137 |
\sa isEnabled(), Qt::ItemIsEnabled, setFlags() |
|
1138 |
*/ |
|
1139 |
void QStandardItem::setEnabled(bool enabled) |
|
1140 |
{
|
|
1141 |
Q_D(QStandardItem); |
|
1142 |
d->changeFlags(enabled, Qt::ItemIsEnabled); |
|
1143 |
} |
|
1144 |
||
1145 |
/*! |
|
1146 |
\fn bool QStandardItem::isEnabled() const |
|
1147 |
||
1148 |
Returns whether the item is enabled. |
|
1149 |
||
1150 |
When an item is enabled, the user can interact with it. The possible |
|
1151 |
types of interaction are specified by the other item flags, such as |
|
1152 |
isEditable() and isSelectable(). |
|
1153 |
||
1154 |
The default value is true. |
|
1155 |
||
1156 |
\sa setEnabled(), flags() |
|
1157 |
*/ |
|
1158 |
||
1159 |
/*! |
|
1160 |
Sets whether the item is editable. If \a editable is true, the item can be |
|
1161 |
edited by the user; otherwise, the user cannot edit the item. |
|
1162 |
||
1163 |
How the user can edit items in a view is determined by the view's edit |
|
1164 |
triggers; see QAbstractItemView::editTriggers. |
|
1165 |
||
1166 |
\sa isEditable(), setFlags() |
|
1167 |
*/ |
|
1168 |
void QStandardItem::setEditable(bool editable) |
|
1169 |
{
|
|
1170 |
Q_D(QStandardItem); |
|
1171 |
d->changeFlags(editable, Qt::ItemIsEditable); |
|
1172 |
} |
|
1173 |
||
1174 |
/*! |
|
1175 |
\fn bool QStandardItem::isEditable() const |
|
1176 |
||
1177 |
Returns whether the item can be edited by the user. |
|
1178 |
||
1179 |
When an item is editable (and enabled), the user can edit the item by |
|
1180 |
invoking one of the view's edit triggers; see |
|
1181 |
QAbstractItemView::editTriggers. |
|
1182 |
||
1183 |
The default value is true. |
|
1184 |
||
1185 |
\sa setEditable(), flags() |
|
1186 |
*/ |
|
1187 |
||
1188 |
/*! |
|
1189 |
Sets whether the item is selectable. If \a selectable is true, the item |
|
1190 |
can be selected by the user; otherwise, the user cannot select the item. |
|
1191 |
||
1192 |
You can control the selection behavior and mode by manipulating their |
|
1193 |
view properties; see QAbstractItemView::selectionMode and |
|
1194 |
QAbstractItemView::selectionBehavior. |
|
1195 |
||
1196 |
\sa isSelectable(), setFlags() |
|
1197 |
*/ |
|
1198 |
void QStandardItem::setSelectable(bool selectable) |
|
1199 |
{
|
|
1200 |
Q_D(QStandardItem); |
|
1201 |
d->changeFlags(selectable, Qt::ItemIsSelectable); |
|
1202 |
} |
|
1203 |
||
1204 |
/*! |
|
1205 |
\fn bool QStandardItem::isSelectable() const |
|
1206 |
||
1207 |
Returns whether the item is selectable by the user. |
|
1208 |
||
1209 |
The default value is true. |
|
1210 |
||
1211 |
\sa setSelectable(), flags() |
|
1212 |
*/ |
|
1213 |
||
1214 |
/*! |
|
1215 |
Sets whether the item is user-checkable. If \a checkable is true, the |
|
1216 |
item can be checked by the user; otherwise, the user cannot check |
|
1217 |
the item. |
|
1218 |
||
1219 |
The item delegate will render a checkable item with a check box next to the |
|
1220 |
item's text. |
|
1221 |
||
1222 |
\sa isCheckable(), setCheckState(), setTristate() |
|
1223 |
*/ |
|
1224 |
void QStandardItem::setCheckable(bool checkable) |
|
1225 |
{
|
|
1226 |
Q_D(QStandardItem); |
|
1227 |
if (checkable && !isCheckable()) {
|
|
1228 |
// make sure there's data for the checkstate role |
|
1229 |
if (!data(Qt::CheckStateRole).isValid()) |
|
1230 |
setData(Qt::Unchecked, Qt::CheckStateRole); |
|
1231 |
} |
|
1232 |
d->changeFlags(checkable, Qt::ItemIsUserCheckable); |
|
1233 |
} |
|
1234 |
||
1235 |
/*! |
|
1236 |
\fn bool QStandardItem::isCheckable() const |
|
1237 |
||
1238 |
Returns whether the item is user-checkable. |
|
1239 |
||
1240 |
The default value is false. |
|
1241 |
||
1242 |
\sa setCheckable(), checkState(), isTristate() |
|
1243 |
*/ |
|
1244 |
||
1245 |
/*! |
|
1246 |
Sets whether the item is tristate. If \a tristate is true, the |
|
1247 |
item is checkable with three separate states; otherwise, the item |
|
1248 |
is checkable with two states. (Note that this also requires that |
|
1249 |
the item is checkable; see isCheckable().) |
|
1250 |
||
1251 |
\sa isTristate(), setCheckable(), setCheckState() |
|
1252 |
*/ |
|
1253 |
void QStandardItem::setTristate(bool tristate) |
|
1254 |
{
|
|
1255 |
Q_D(QStandardItem); |
|
1256 |
d->changeFlags(tristate, Qt::ItemIsTristate); |
|
1257 |
} |
|
1258 |
||
1259 |
/*! |
|
1260 |
\fn bool QStandardItem::isTristate() const |
|
1261 |
||
1262 |
Returns whether the item is tristate; that is, if it's checkable with three |
|
1263 |
separate states. |
|
1264 |
||
1265 |
The default value is false. |
|
1266 |
||
1267 |
\sa setTristate(), isCheckable(), checkState() |
|
1268 |
*/ |
|
1269 |
||
1270 |
#ifndef QT_NO_DRAGANDDROP |
|
1271 |
||
1272 |
/*! |
|
1273 |
Sets whether the item is drag enabled. If \a dragEnabled is true, the item |
|
1274 |
can be dragged by the user; otherwise, the user cannot drag the item. |
|
1275 |
||
1276 |
Note that you also need to ensure that item dragging is enabled in the view; |
|
1277 |
see QAbstractItemView::dragEnabled. |
|
1278 |
||
1279 |
\sa isDragEnabled(), setDropEnabled(), setFlags() |
|
1280 |
*/ |
|
1281 |
void QStandardItem::setDragEnabled(bool dragEnabled) |
|
1282 |
{
|
|
1283 |
Q_D(QStandardItem); |
|
1284 |
d->changeFlags(dragEnabled, Qt::ItemIsDragEnabled); |
|
1285 |
} |
|
1286 |
||
1287 |
/*! |
|
1288 |
\fn bool QStandardItem::isDragEnabled() const |
|
1289 |
||
1290 |
Returns whether the item is drag enabled. An item that is drag enabled can |
|
1291 |
be dragged by the user. |
|
1292 |
||
1293 |
The default value is true. |
|
1294 |
||
1295 |
Note that item dragging must be enabled in the view for dragging to work; |
|
1296 |
see QAbstractItemView::dragEnabled. |
|
1297 |
||
1298 |
\sa setDragEnabled(), isDropEnabled(), flags() |
|
1299 |
*/ |
|
1300 |
||
1301 |
/*! |
|
1302 |
Sets whether the item is drop enabled. If \a dropEnabled is true, the item |
|
1303 |
can be used as a drop target; otherwise, it cannot. |
|
1304 |
||
1305 |
Note that you also need to ensure that drops are enabled in the view; see |
|
1306 |
QWidget::acceptDrops(); and that the model supports the desired drop actions; |
|
1307 |
see QAbstractItemModel::supportedDropActions(). |
|
1308 |
||
1309 |
\sa isDropEnabled(), setDragEnabled(), setFlags() |
|
1310 |
*/ |
|
1311 |
void QStandardItem::setDropEnabled(bool dropEnabled) |
|
1312 |
{
|
|
1313 |
Q_D(QStandardItem); |
|
1314 |
d->changeFlags(dropEnabled, Qt::ItemIsDropEnabled); |
|
1315 |
} |
|
1316 |
||
1317 |
/*! |
|
1318 |
\fn bool QStandardItem::isDropEnabled() const |
|
1319 |
||
1320 |
Returns whether the item is drop enabled. When an item is drop enabled, it |
|
1321 |
can be used as a drop target. |
|
1322 |
||
1323 |
The default value is true. |
|
1324 |
||
1325 |
\sa setDropEnabled(), isDragEnabled(), flags() |
|
1326 |
*/ |
|
1327 |
||
1328 |
#endif // QT_NO_DRAGANDDROP |
|
1329 |
||
1330 |
/*! |
|
1331 |
Returns the row where the item is located in its parent's child table, or |
|
1332 |
-1 if the item has no parent. |
|
1333 |
||
1334 |
\sa column(), parent() |
|
1335 |
*/ |
|
1336 |
int QStandardItem::row() const |
|
1337 |
{
|
|
1338 |
Q_D(const QStandardItem); |
|
1339 |
QPair<int, int> pos = d->position(); |
|
1340 |
return pos.first; |
|
1341 |
} |
|
1342 |
||
1343 |
/*! |
|
1344 |
Returns the column where the item is located in its parent's child table, |
|
1345 |
or -1 if the item has no parent. |
|
1346 |
||
1347 |
\sa row(), parent() |
|
1348 |
*/ |
|
1349 |
int QStandardItem::column() const |
|
1350 |
{
|
|
1351 |
Q_D(const QStandardItem); |
|
1352 |
QPair<int, int> pos = d->position(); |
|
1353 |
return pos.second; |
|
1354 |
} |
|
1355 |
||
1356 |
/*! |
|
1357 |
Returns the QModelIndex associated with this item. |
|
1358 |
||
1359 |
When you need to invoke item functionality in a QModelIndex-based API (e.g. |
|
1360 |
QAbstractItemView), you can call this function to obtain an index that |
|
1361 |
corresponds to the item's location in the model. |
|
1362 |
||
1363 |
If the item is not associated with a model, an invalid QModelIndex is |
|
1364 |
returned. |
|
1365 |
||
1366 |
\sa model(), QStandardItemModel::itemFromIndex() |
|
1367 |
*/ |
|
1368 |
QModelIndex QStandardItem::index() const |
|
1369 |
{
|
|
1370 |
Q_D(const QStandardItem); |
|
1371 |
return d->model ? d->model->indexFromItem(this) : QModelIndex(); |
|
1372 |
} |
|
1373 |
||
1374 |
/*! |
|
1375 |
Returns the QStandardItemModel that this item belongs to. |
|
1376 |
||
1377 |
If the item is not a child of another item that belongs to the model, this |
|
1378 |
function returns 0. |
|
1379 |
||
1380 |
\sa index() |
|
1381 |
*/ |
|
1382 |
QStandardItemModel *QStandardItem::model() const |
|
1383 |
{
|
|
1384 |
Q_D(const QStandardItem); |
|
1385 |
return d->model; |
|
1386 |
} |
|
1387 |
||
1388 |
/*! |
|
1389 |
Sets the number of child item rows to \a rows. If this is less than |
|
1390 |
rowCount(), the data in the unwanted rows is discarded. |
|
1391 |
||
1392 |
\sa rowCount(), setColumnCount() |
|
1393 |
*/ |
|
1394 |
void QStandardItem::setRowCount(int rows) |
|
1395 |
{
|
|
1396 |
int rc = rowCount(); |
|
1397 |
if (rc == rows) |
|
1398 |
return; |
|
1399 |
if (rc < rows) |
|
1400 |
insertRows(qMax(rc, 0), rows - rc); |
|
1401 |
else |
|
1402 |
removeRows(qMax(rows, 0), rc - rows); |
|
1403 |
} |
|
1404 |
||
1405 |
/*! |
|
1406 |
Returns the number of child item rows that the item has. |
|
1407 |
||
1408 |
\sa setRowCount(), columnCount() |
|
1409 |
*/ |
|
1410 |
int QStandardItem::rowCount() const |
|
1411 |
{
|
|
1412 |
Q_D(const QStandardItem); |
|
1413 |
return d->rowCount(); |
|
1414 |
} |
|
1415 |
||
1416 |
/*! |
|
1417 |
Sets the number of child item columns to \a columns. If this is less than |
|
1418 |
columnCount(), the data in the unwanted columns is discarded. |
|
1419 |
||
1420 |
\sa columnCount(), setRowCount() |
|
1421 |
*/ |
|
1422 |
void QStandardItem::setColumnCount(int columns) |
|
1423 |
{
|
|
1424 |
int cc = columnCount(); |
|
1425 |
if (cc == columns) |
|
1426 |
return; |
|
1427 |
if (cc < columns) |
|
1428 |
insertColumns(qMax(cc, 0), columns - cc); |
|
1429 |
else |
|
1430 |
removeColumns(qMax(columns, 0), cc - columns); |
|
1431 |
} |
|
1432 |
||
1433 |
/*! |
|
1434 |
Returns the number of child item columns that the item has. |
|
1435 |
||
1436 |
\sa setColumnCount(), rowCount() |
|
1437 |
*/ |
|
1438 |
int QStandardItem::columnCount() const |
|
1439 |
{
|
|
1440 |
Q_D(const QStandardItem); |
|
1441 |
return d->columnCount(); |
|
1442 |
} |
|
1443 |
||
1444 |
/*! |
|
1445 |
Inserts a row at \a row containing \a items. If necessary, the column |
|
1446 |
count is increased to the size of \a items. |
|
1447 |
||
1448 |
\sa insertRows(), insertColumn() |
|
1449 |
*/ |
|
1450 |
void QStandardItem::insertRow(int row, const QList<QStandardItem*> &items) |
|
1451 |
{
|
|
1452 |
Q_D(QStandardItem); |
|
1453 |
if (row < 0) |
|
1454 |
return; |
|
1455 |
if (columnCount() < items.count()) |
|
1456 |
setColumnCount(items.count()); |
|
1457 |
d->insertRows(row, 1, items); |
|
1458 |
} |
|
1459 |
||
1460 |
/*! |
|
1461 |
Inserts \a items at \a row. The column count wont be changed. |
|
1462 |
||
1463 |
\sa insertRow(), insertColumn() |
|
1464 |
*/ |
|
1465 |
void QStandardItem::insertRows(int row, const QList<QStandardItem*> &items) |
|
1466 |
{
|
|
1467 |
Q_D(QStandardItem); |
|
1468 |
if (row < 0) |
|
1469 |
return; |
|
1470 |
d->insertRows(row, items); |
|
1471 |
} |
|
1472 |
||
1473 |
/*! |
|
1474 |
Inserts a column at \a column containing \a items. If necessary, |
|
1475 |
the row count is increased to the size of \a items. |
|
1476 |
||
1477 |
\sa insertColumns(), insertRow() |
|
1478 |
*/ |
|
1479 |
void QStandardItem::insertColumn(int column, const QList<QStandardItem*> &items) |
|
1480 |
{
|
|
1481 |
Q_D(QStandardItem); |
|
1482 |
if (column < 0) |
|
1483 |
return; |
|
1484 |
if (rowCount() < items.count()) |
|
1485 |
setRowCount(items.count()); |
|
1486 |
d->insertColumns(column, 1, items); |
|
1487 |
} |
|
1488 |
||
1489 |
/*! |
|
1490 |
Inserts \a count rows of child items at row \a row. |
|
1491 |
||
1492 |
\sa insertRow(), insertColumns() |
|
1493 |
*/ |
|
1494 |
void QStandardItem::insertRows(int row, int count) |
|
1495 |
{
|
|
1496 |
Q_D(QStandardItem); |
|
1497 |
if (rowCount() < row) {
|
|
1498 |
count += row - rowCount(); |
|
1499 |
row = rowCount(); |
|
1500 |
} |
|
1501 |
d->insertRows(row, count, QList<QStandardItem*>()); |
|
1502 |
} |
|
1503 |
||
1504 |
/*! |
|
1505 |
Inserts \a count columns of child items at column \a column. |
|
1506 |
||
1507 |
\sa insertColumn(), insertRows() |
|
1508 |
*/ |
|
1509 |
void QStandardItem::insertColumns(int column, int count) |
|
1510 |
{
|
|
1511 |
Q_D(QStandardItem); |
|
1512 |
if (columnCount() < column) {
|
|
1513 |
count += column - columnCount(); |
|
1514 |
column = columnCount(); |
|
1515 |
} |
|
1516 |
d->insertColumns(column, count, QList<QStandardItem*>()); |
|
1517 |
} |
|
1518 |
||
1519 |
/*! |
|
1520 |
\fn void QStandardItem::appendRow(const QList<QStandardItem*> &items) |
|
1521 |
||
1522 |
Appends a row containing \a items. If necessary, the column count is |
|
1523 |
increased to the size of \a items. |
|
1524 |
||
1525 |
\sa insertRow() |
|
1526 |
*/ |
|
1527 |
||
1528 |
/*! |
|
1529 |
\fn void QStandardItem::appendRows(const QList<QStandardItem*> &items) |
|
1530 |
||
1531 |
Appends rows containing \a items. The column count will not change. |
|
1532 |
||
1533 |
\sa insertRow() |
|
1534 |
*/ |
|
1535 |
||
1536 |
/*! |
|
1537 |
\fn void QStandardItem::appendColumn(const QList<QStandardItem*> &items) |
|
1538 |
||
1539 |
Appends a column containing \a items. If necessary, the row count is |
|
1540 |
increased to the size of \a items. |
|
1541 |
||
1542 |
\sa insertColumn() |
|
1543 |
*/ |
|
1544 |
||
1545 |
/*! |
|
1546 |
\fn bool QStandardItemModel::insertRow(int row, const QModelIndex &parent) |
|
1547 |
||
1548 |
Inserts a single row before the given \a row in the child items of the |
|
1549 |
\a parent specified. Returns true if the row is inserted; otherwise |
|
1550 |
returns false. |
|
1551 |
||
1552 |
\sa insertRows(), insertColumn(), removeRow() |
|
1553 |
*/ |
|
1554 |
||
1555 |
/*! |
|
1556 |
\fn bool QStandardItemModel::insertColumn(int column, const QModelIndex &parent) |
|
1557 |
||
1558 |
Inserts a single column before the given \a column in the child items of |
|
1559 |
the \a parent specified. Returns true if the column is inserted; otherwise |
|
1560 |
returns false. |
|
1561 |
||
1562 |
\sa insertColumns(), insertRow(), removeColumn() |
|
1563 |
*/ |
|
1564 |
||
1565 |
/*! |
|
1566 |
\fn QStandardItem::insertRow(int row, QStandardItem *item) |
|
1567 |
\overload |
|
1568 |
||
1569 |
Inserts a row at \a row containing \a item. |
|
1570 |
||
1571 |
When building a list or a tree that has only one column, this function |
|
1572 |
provides a convenient way to insert a single new item. |
|
1573 |
*/ |
|
1574 |
||
1575 |
/*! |
|
1576 |
\fn QStandardItem::appendRow(QStandardItem *item) |
|
1577 |
\overload |
|
1578 |
||
1579 |
Appends a row containing \a item. |
|
1580 |
||
1581 |
When building a list or a tree that has only one column, this function |
|
1582 |
provides a convenient way to append a single new item. |
|
1583 |
*/ |
|
1584 |
||
1585 |
/*! |
|
1586 |
Removes the given \a row. The items that were in the row are deleted. |
|
1587 |
||
1588 |
\sa takeRow(), removeRows(), removeColumn() |
|
1589 |
*/ |
|
1590 |
void QStandardItem::removeRow(int row) |
|
1591 |
{
|
|
1592 |
removeRows(row, 1); |
|
1593 |
} |
|
1594 |
||
1595 |
/*! |
|
1596 |
Removes the given \a column. The items that were in the |
|
1597 |
column are deleted. |
|
1598 |
||
1599 |
\sa takeColumn(), removeColumns(), removeRow() |
|
1600 |
*/ |
|
1601 |
void QStandardItem::removeColumn(int column) |
|
1602 |
{
|
|
1603 |
removeColumns(column, 1); |
|
1604 |
} |
|
1605 |
||
1606 |
/*! |
|
1607 |
Removes \a count rows at row \a row. The items that were in those rows are |
|
1608 |
deleted. |
|
1609 |
||
1610 |
\sa removeRow(), removeColumn() |
|
1611 |
*/ |
|
1612 |
void QStandardItem::removeRows(int row, int count) |
|
1613 |
{
|
|
1614 |
Q_D(QStandardItem); |
|
1615 |
if ((count < 1) || (row < 0) || ((row + count) > rowCount())) |
|
1616 |
return; |
|
1617 |
if (d->model) |
|
1618 |
d->model->d_func()->rowsAboutToBeRemoved(this, row, row + count - 1); |
|
1619 |
int i = d->childIndex(row, 0); |
|
1620 |
int n = count * d->columnCount(); |
|
1621 |
for (int j = i; j < n+i; ++j) {
|
|
1622 |
QStandardItem *oldItem = d->children.at(j); |
|
1623 |
if (oldItem) |
|
1624 |
oldItem->d_func()->setModel(0); |
|
1625 |
delete oldItem; |
|
1626 |
} |
|
1627 |
d->children.remove(qMax(i, 0), n); |
|
1628 |
d->rows -= count; |
|
1629 |
if (d->model) |
|
1630 |
d->model->d_func()->rowsRemoved(this, row, count); |
|
1631 |
} |
|
1632 |
||
1633 |
/*! |
|
1634 |
Removes \a count columns at column \a column. The items that were in those |
|
1635 |
columns are deleted. |
|
1636 |
||
1637 |
\sa removeColumn(), removeRows() |
|
1638 |
*/ |
|
1639 |
void QStandardItem::removeColumns(int column, int count) |
|
1640 |
{
|
|
1641 |
Q_D(QStandardItem); |
|
1642 |
if ((count < 1) || (column < 0) || ((column + count) > columnCount())) |
|
1643 |
return; |
|
1644 |
if (d->model) |
|
1645 |
d->model->d_func()->columnsAboutToBeRemoved(this, column, column + count - 1); |
|
1646 |
for (int row = d->rowCount() - 1; row >= 0; --row) {
|
|
1647 |
int i = d->childIndex(row, column); |
|
1648 |
for (int j=i; j<i+count; ++j) {
|
|
1649 |
QStandardItem *oldItem = d->children.at(j); |
|
1650 |
if (oldItem) |
|
1651 |
oldItem->d_func()->setModel(0); |
|
1652 |
delete oldItem; |
|
1653 |
} |
|
1654 |
d->children.remove(i, count); |
|
1655 |
} |
|
1656 |
d->columns -= count; |
|
1657 |
if (d->model) |
|
1658 |
d->model->d_func()->columnsRemoved(this, column, count); |
|
1659 |
} |
|
1660 |
||
1661 |
/*! |
|
1662 |
Returns true if this item has any children; otherwise returns false. |
|
1663 |
||
1664 |
\sa rowCount(), columnCount(), child() |
|
1665 |
*/ |
|
1666 |
bool QStandardItem::hasChildren() const |
|
1667 |
{
|
|
1668 |
return (rowCount() > 0) && (columnCount() > 0); |
|
1669 |
} |
|
1670 |
||
1671 |
/*! |
|
1672 |
Sets the child item at (\a row, \a column) to \a item. This item (the parent |
|
1673 |
item) takes ownership of \a item. If necessary, the row count and column |
|
1674 |
count are increased to fit the item. |
|
1675 |
||
1676 |
\sa child() |
|
1677 |
*/ |
|
1678 |
void QStandardItem::setChild(int row, int column, QStandardItem *item) |
|
1679 |
{
|
|
1680 |
Q_D(QStandardItem); |
|
1681 |
d->setChild(row, column, item, true); |
|
1682 |
} |
|
1683 |
||
1684 |
/*! |
|
1685 |
\fn QStandardItem::setChild(int row, QStandardItem *item) |
|
1686 |
\overload |
|
1687 |
||
1688 |
Sets the child at \a row to \a item. |
|
1689 |
*/ |
|
1690 |
||
1691 |
/*! |
|
1692 |
Returns the child item at (\a row, \a column) if one has been set; otherwise |
|
1693 |
returns 0. |
|
1694 |
||
1695 |
\sa setChild(), takeChild(), parent() |
|
1696 |
*/ |
|
1697 |
QStandardItem *QStandardItem::child(int row, int column) const |
|
1698 |
{
|
|
1699 |
Q_D(const QStandardItem); |
|
1700 |
int index = d->childIndex(row, column); |
|
1701 |
if (index == -1) |
|
1702 |
return 0; |
|
1703 |
return d->children.at(index); |
|
1704 |
} |
|
1705 |
||
1706 |
/*! |
|
1707 |
Removes the child item at (\a row, \a column) without deleting it, and returns |
|
1708 |
a pointer to the item. If there was no child at the given location, then |
|
1709 |
this function returns 0. |
|
1710 |
||
1711 |
Note that this function, unlike takeRow() and takeColumn(), does not affect |
|
1712 |
the dimensions of the child table. |
|
1713 |
||
1714 |
\sa child(), takeRow(), takeColumn() |
|
1715 |
*/ |
|
1716 |
QStandardItem *QStandardItem::takeChild(int row, int column) |
|
1717 |
{
|
|
1718 |
Q_D(QStandardItem); |
|
1719 |
QStandardItem *item = 0; |
|
1720 |
int index = d->childIndex(row, column); |
|
1721 |
if (index != -1) {
|
|
1722 |
item = d->children.at(index); |
|
1723 |
if (item) |
|
1724 |
item->d_func()->setParentAndModel(0, 0); |
|
1725 |
d->children.replace(index, 0); |
|
1726 |
} |
|
1727 |
return item; |
|
1728 |
} |
|
1729 |
||
1730 |
/*! |
|
1731 |
Removes \a row without deleting the row items, and returns a list of |
|
1732 |
pointers to the removed items. For items in the row that have not been |
|
1733 |
set, the corresponding pointers in the list will be 0. |
|
1734 |
||
1735 |
\sa removeRow(), insertRow(), takeColumn() |
|
1736 |
*/ |
|
1737 |
QList<QStandardItem*> QStandardItem::takeRow(int row) |
|
1738 |
{
|
|
1739 |
Q_D(QStandardItem); |
|
1740 |
if ((row < 0) || (row >= rowCount())) |
|
1741 |
return QList<QStandardItem*>(); |
|
1742 |
if (d->model) |
|
1743 |
d->model->d_func()->rowsAboutToBeRemoved(this, row, row); |
|
1744 |
QList<QStandardItem*> items; |
|
1745 |
int index = d->childIndex(row, 0); // Will return -1 if there are no columns |
|
1746 |
if (index != -1) {
|
|
1747 |
int col_count = d->columnCount(); |
|
1748 |
for (int column = 0; column < col_count; ++column) {
|
|
1749 |
QStandardItem *ch = d->children.at(index + column); |
|
1750 |
if (ch) |
|
1751 |
ch->d_func()->setParentAndModel(0, 0); |
|
1752 |
items.append(ch); |
|
1753 |
} |
|
1754 |
d->children.remove(index, col_count); |
|
1755 |
} |
|
1756 |
d->rows--; |
|
1757 |
if (d->model) |
|
1758 |
d->model->d_func()->rowsRemoved(this, row, 1); |
|
1759 |
return items; |
|
1760 |
} |
|
1761 |
||
1762 |
/*! |
|
1763 |
Removes \a column without deleting the column items, and returns a list of |
|
1764 |
pointers to the removed items. For items in the column that have not been |
|
1765 |
set, the corresponding pointers in the list will be 0. |
|
1766 |
||
1767 |
\sa removeColumn(), insertColumn(), takeRow() |
|
1768 |
*/ |
|
1769 |
QList<QStandardItem*> QStandardItem::takeColumn(int column) |
|
1770 |
{
|
|
1771 |
Q_D(QStandardItem); |
|
1772 |
if ((column < 0) || (column >= columnCount())) |
|
1773 |
return QList<QStandardItem*>(); |
|
1774 |
if (d->model) |
|
1775 |
d->model->d_func()->columnsAboutToBeRemoved(this, column, column); |
|
1776 |
QList<QStandardItem*> items; |
|
1777 |
||
1778 |
for (int row = d->rowCount() - 1; row >= 0; --row) {
|
|
1779 |
int index = d->childIndex(row, column); |
|
1780 |
QStandardItem *ch = d->children.at(index); |
|
1781 |
if (ch) |
|
1782 |
ch->d_func()->setParentAndModel(0, 0); |
|
1783 |
d->children.remove(index); |
|
1784 |
items.prepend(ch); |
|
1785 |
} |
|
1786 |
d->columns--; |
|
1787 |
if (d->model) |
|
1788 |
d->model->d_func()->columnsRemoved(this, column, 1); |
|
1789 |
return items; |
|
1790 |
} |
|
1791 |
||
1792 |
/*! |
|
1793 |
Returns true if this item is less than \a other; otherwise returns false. |
|
1794 |
||
1795 |
The default implementation uses the data for the item's sort role (see |
|
1796 |
QStandardItemModel::sortRole) to perform the comparison if the item |
|
1797 |
belongs to a model; otherwise, the data for the item's Qt::DisplayRole |
|
1798 |
(text()) is used to perform the comparison. |
|
1799 |
||
1800 |
sortChildren() and QStandardItemModel::sort() use this function when |
|
1801 |
sorting items. If you want custom sorting, you can subclass QStandardItem |
|
1802 |
and reimplement this function. |
|
1803 |
*/ |
|
1804 |
bool QStandardItem::operator<(const QStandardItem &other) const |
|
1805 |
{
|
|
1806 |
const int role = model() ? model()->sortRole() : Qt::DisplayRole; |
|
1807 |
const QVariant l = data(role), r = other.data(role); |
|
1808 |
// this code is copied from QSortFilterProxyModel::lessThan() |
|
1809 |
switch (l.userType()) {
|
|
1810 |
case QVariant::Invalid: |
|
1811 |
return (r.type() == QVariant::Invalid); |
|
1812 |
case QVariant::Int: |
|
1813 |
return l.toInt() < r.toInt(); |
|
1814 |
case QVariant::UInt: |
|
1815 |
return l.toUInt() < r.toUInt(); |
|
1816 |
case QVariant::LongLong: |
|
1817 |
return l.toLongLong() < r.toLongLong(); |
|
1818 |
case QVariant::ULongLong: |
|
1819 |
return l.toULongLong() < r.toULongLong(); |
|
1820 |
case QMetaType::Float: |
|
1821 |
return l.toFloat() < r.toFloat(); |
|
1822 |
case QVariant::Double: |
|
1823 |
return l.toDouble() < r.toDouble(); |
|
1824 |
case QVariant::Char: |
|
1825 |
return l.toChar() < r.toChar(); |
|
1826 |
case QVariant::Date: |
|
1827 |
return l.toDate() < r.toDate(); |
|
1828 |
case QVariant::Time: |
|
1829 |
return l.toTime() < r.toTime(); |
|
1830 |
case QVariant::DateTime: |
|
1831 |
return l.toDateTime() < r.toDateTime(); |
|
1832 |
case QVariant::String: |
|
1833 |
default: |
|
1834 |
return l.toString().compare(r.toString()) < 0; |
|
1835 |
} |
|
1836 |
} |
|
1837 |
||
1838 |
/*! |
|
1839 |
Sorts the children of the item using the given \a order, by the values in |
|
1840 |
the given \a column. |
|
1841 |
||
1842 |
\note This function is recursive, therefore it sorts the children of the |
|
1843 |
item, its grandchildren, etc. |
|
1844 |
||
1845 |
\sa {operator<()}
|
|
1846 |
*/ |
|
1847 |
void QStandardItem::sortChildren(int column, Qt::SortOrder order) |
|
1848 |
{
|
|
1849 |
Q_D(QStandardItem); |
|
1850 |
if ((column < 0) || (rowCount() == 0)) |
|
1851 |
return; |
|
1852 |
if (d->model) |
|
1853 |
emit d->model->layoutAboutToBeChanged(); |
|
1854 |
d->sortChildren(column, order); |
|
1855 |
if (d->model) |
|
1856 |
emit d->model->layoutChanged(); |
|
1857 |
} |
|
1858 |
||
1859 |
/*! |
|
1860 |
Returns a copy of this item. The item's children are not copied. |
|
1861 |
||
1862 |
When subclassing QStandardItem, you can reimplement this function |
|
1863 |
to provide QStandardItemModel with a factory that it can use to |
|
1864 |
create new items on demand. |
|
1865 |
||
1866 |
\sa QStandardItemModel::setItemPrototype(), operator=() |
|
1867 |
*/ |
|
1868 |
QStandardItem *QStandardItem::clone() const |
|
1869 |
{
|
|
1870 |
return new QStandardItem(*this); |
|
1871 |
} |
|
1872 |
||
1873 |
/*! |
|
1874 |
Returns the type of this item. The type is used to distinguish custom |
|
1875 |
items from the base class. When subclassing QStandardItem, you should |
|
1876 |
reimplement this function and return a new value greater than or equal |
|
1877 |
to \l UserType. |
|
1878 |
||
1879 |
\sa QStandardItem::Type |
|
1880 |
*/ |
|
1881 |
int QStandardItem::type() const |
|
1882 |
{
|
|
1883 |
return Type; |
|
1884 |
} |
|
1885 |
||
1886 |
#ifndef QT_NO_DATASTREAM |
|
1887 |
||
1888 |
/*! |
|
1889 |
Reads the item from stream \a in. Only the data and flags of the item are |
|
1890 |
read, not the child items. |
|
1891 |
||
1892 |
\sa write() |
|
1893 |
*/ |
|
1894 |
void QStandardItem::read(QDataStream &in) |
|
1895 |
{
|
|
1896 |
Q_D(QStandardItem); |
|
1897 |
in >> d->values; |
|
1898 |
qint32 flags; |
|
1899 |
in >> flags; |
|
1900 |
setFlags(Qt::ItemFlags(flags)); |
|
1901 |
} |
|
1902 |
||
1903 |
/*! |
|
1904 |
Writes the item to stream \a out. Only the data and flags of the item |
|
1905 |
are written, not the child items. |
|
1906 |
||
1907 |
\sa read() |
|
1908 |
*/ |
|
1909 |
void QStandardItem::write(QDataStream &out) const |
|
1910 |
{
|
|
1911 |
Q_D(const QStandardItem); |
|
1912 |
out << d->values; |
|
1913 |
out << flags(); |
|
1914 |
} |
|
1915 |
||
1916 |
/*! |
|
1917 |
\relates QStandardItem |
|
1918 |
\since 4.2 |
|
1919 |
||
1920 |
Reads a QStandardItem from stream \a in into \a item. |
|
1921 |
||
1922 |
This operator uses QStandardItem::read(). |
|
1923 |
||
1924 |
\sa {Format of the QDataStream Operators}
|
|
1925 |
*/ |
|
1926 |
QDataStream &operator>>(QDataStream &in, QStandardItem &item) |
|
1927 |
{
|
|
1928 |
item.read(in); |
|
1929 |
return in; |
|
1930 |
} |
|
1931 |
||
1932 |
/*! |
|
1933 |
\relates QStandardItem |
|
1934 |
\since 4.2 |
|
1935 |
||
1936 |
Writes the QStandardItem \a item to stream \a out. |
|
1937 |
||
1938 |
This operator uses QStandardItem::write(). |
|
1939 |
||
1940 |
\sa {Format of the QDataStream Operators}
|
|
1941 |
*/ |
|
1942 |
QDataStream &operator<<(QDataStream &out, const QStandardItem &item) |
|
1943 |
{
|
|
1944 |
item.write(out); |
|
1945 |
return out; |
|
1946 |
} |
|
1947 |
||
1948 |
#endif // QT_NO_DATASTREAM |
|
1949 |
||
1950 |
/*! |
|
1951 |
\class QStandardItemModel |
|
1952 |
\brief The QStandardItemModel class provides a generic model for storing custom data. |
|
1953 |
\ingroup model-view |
|
1954 |
||
1955 |
QStandardItemModel can be used as a repository for standard Qt |
|
1956 |
data types. It is one of the \l {Model/View Classes} and is part
|
|
1957 |
of Qt's \l {Model/View Programming}{model/view} framework.
|
|
1958 |
||
1959 |
QStandardItemModel provides a classic item-based approach to working with |
|
1960 |
the model. The items in a QStandardItemModel are provided by |
|
1961 |
QStandardItem. |
|
1962 |
||
1963 |
QStandardItemModel implements the QAbstractItemModel interface, which |
|
1964 |
means that the model can be used to provide data in any view that supports |
|
1965 |
that interface (such as QListView, QTableView and QTreeView, and your own |
|
1966 |
custom views). For performance and flexibility, you may want to subclass |
|
1967 |
QAbstractItemModel to provide support for different kinds of data |
|
1968 |
repositories. For example, the QDirModel provides a model interface to the |
|
1969 |
underlying file system. |
|
1970 |
||
1971 |
When you want a list or tree, you typically create an empty |
|
1972 |
QStandardItemModel and use appendRow() to add items to the model, and |
|
1973 |
item() to access an item. If your model represents a table, you typically |
|
1974 |
pass the dimensions of the table to the QStandardItemModel constructor and |
|
1975 |
use setItem() to position items into the table. You can also use setRowCount() |
|
1976 |
and setColumnCount() to alter the dimensions of the model. To insert items, |
|
1977 |
use insertRow() or insertColumn(), and to remove items, use removeRow() or |
|
1978 |
removeColumn(). |
|
1979 |
||
1980 |
You can set the header labels of your model with setHorizontalHeaderLabels() |
|
1981 |
and setVerticalHeaderLabels(). |
|
1982 |
||
1983 |
You can search for items in the model with findItems(), and sort the model by |
|
1984 |
calling sort(). |
|
1985 |
||
1986 |
Call clear() to remove all items from the model. |
|
1987 |
||
1988 |
An example usage of QStandardItemModel to create a table: |
|
1989 |
||
1990 |
\snippet doc/src/snippets/code/src_gui_itemviews_qstandarditemmodel.cpp 0 |
|
1991 |
||
1992 |
An example usage of QStandardItemModel to create a tree: |
|
1993 |
||
1994 |
\snippet doc/src/snippets/code/src_gui_itemviews_qstandarditemmodel.cpp 1 |
|
1995 |
||
1996 |
After setting the model on a view, you typically want to react to user |
|
1997 |
actions, such as an item being clicked. Since a QAbstractItemView provides |
|
1998 |
QModelIndex-based signals and functions, you need a way to obtain the |
|
1999 |
QStandardItem that corresponds to a given QModelIndex, and vice |
|
2000 |
versa. itemFromIndex() and indexFromItem() provide this mapping. Typical |
|
2001 |
usage of itemFromIndex() includes obtaining the item at the current index |
|
2002 |
in a view, and obtaining the item that corresponds to an index carried by |
|
2003 |
a QAbstractItemView signal, such as QAbstractItemView::clicked(). First |
|
2004 |
you connect the view's signal to a slot in your class: |
|
2005 |
||
2006 |
\snippet doc/src/snippets/code/src_gui_itemviews_qstandarditemmodel.cpp 2 |
|
2007 |
||
2008 |
When you receive the signal, you call itemFromIndex() on the given model |
|
2009 |
index to get a pointer to the item: |
|
2010 |
||
2011 |
\snippet doc/src/snippets/code/src_gui_itemviews_qstandarditemmodel.cpp 3 |
|
2012 |
||
2013 |
Conversely, you must obtain the QModelIndex of an item when you want to |
|
2014 |
invoke a model/view function that takes an index as argument. You can |
|
2015 |
obtain the index either by using the model's indexFromItem() function, or, |
|
2016 |
equivalently, by calling QStandardItem::index(): |
|
2017 |
||
2018 |
\snippet doc/src/snippets/code/src_gui_itemviews_qstandarditemmodel.cpp 4 |
|
2019 |
||
2020 |
You are, of course, not required to use the item-based approach; you could |
|
2021 |
instead rely entirely on the QAbstractItemModel interface when working with |
|
2022 |
the model, or use a combination of the two as appropriate. |
|
2023 |
||
2024 |
\sa QStandardItem, {Model/View Programming}, QAbstractItemModel,
|
|
2025 |
{itemviews/simpletreemodel}{Simple Tree Model example},
|
|
2026 |
{Item View Convenience Classes}
|
|
2027 |
*/ |
|
2028 |
||
2029 |
/*! |
|
2030 |
\fn void QStandardItemModel::itemChanged(QStandardItem *item) |
|
2031 |
\since 4.2 |
|
2032 |
||
2033 |
This signal is emitted whenever the data of \a item has changed. |
|
2034 |
*/ |
|
2035 |
||
2036 |
/*! |
|
2037 |
Constructs a new item model with the given \a parent. |
|
2038 |
*/ |
|
2039 |
QStandardItemModel::QStandardItemModel(QObject *parent) |
|
2040 |
: QAbstractItemModel(*new QStandardItemModelPrivate, parent) |
|
2041 |
{
|
|
2042 |
Q_D(QStandardItemModel); |
|
2043 |
d->init(); |
|
2044 |
d->root->d_func()->setModel(this); |
|
2045 |
} |
|
2046 |
||
2047 |
/*! |
|
2048 |
Constructs a new item model that initially has \a rows rows and \a columns |
|
2049 |
columns, and that has the given \a parent. |
|
2050 |
*/ |
|
2051 |
QStandardItemModel::QStandardItemModel(int rows, int columns, QObject *parent) |
|
2052 |
: QAbstractItemModel(*new QStandardItemModelPrivate, parent) |
|
2053 |
{
|
|
2054 |
Q_D(QStandardItemModel); |
|
2055 |
d->init(); |
|
2056 |
d->root->insertColumns(0, columns); |
|
2057 |
d->columnHeaderItems.insert(0, columns, 0); |
|
2058 |
d->root->insertRows(0, rows); |
|
2059 |
d->rowHeaderItems.insert(0, rows, 0); |
|
2060 |
d->root->d_func()->setModel(this); |
|
2061 |
} |
|
2062 |
||
2063 |
/*! |
|
2064 |
\internal |
|
2065 |
*/ |
|
2066 |
QStandardItemModel::QStandardItemModel(QStandardItemModelPrivate &dd, QObject *parent) |
|
2067 |
: QAbstractItemModel(dd, parent) |
|
2068 |
{
|
|
2069 |
Q_D(QStandardItemModel); |
|
2070 |
d->init(); |
|
2071 |
} |
|
2072 |
||
2073 |
/*! |
|
2074 |
Destructs the model. The model destroys all its items. |
|
2075 |
*/ |
|
2076 |
QStandardItemModel::~QStandardItemModel() |
|
2077 |
{
|
|
2078 |
} |
|
2079 |
||
2080 |
/*! |
|
2081 |
Removes all items (including header items) from the model and sets the |
|
2082 |
number of rows and columns to zero. |
|
2083 |
||
2084 |
\sa removeColumns(), removeRows() |
|
2085 |
*/ |
|
2086 |
void QStandardItemModel::clear() |
|
2087 |
{
|
|
2088 |
Q_D(QStandardItemModel); |
|
2089 |
d->root.reset(new QStandardItem); |
|
2090 |
d->root->d_func()->setModel(this); |
|
2091 |
qDeleteAll(d->columnHeaderItems); |
|
2092 |
d->columnHeaderItems.clear(); |
|
2093 |
qDeleteAll(d->rowHeaderItems); |
|
2094 |
d->rowHeaderItems.clear(); |
|
2095 |
reset(); |
|
2096 |
} |
|
2097 |
||
2098 |
/*! |
|
2099 |
\since 4.2 |
|
2100 |
||
2101 |
Returns a pointer to the QStandardItem associated with the given \a index. |
|
2102 |
||
2103 |
Calling this function is typically the initial step when processing |
|
2104 |
QModelIndex-based signals from a view, such as |
|
2105 |
QAbstractItemView::activated(). In your slot, you call itemFromIndex(), |
|
2106 |
with the QModelIndex carried by the signal as argument, to obtain a |
|
2107 |
pointer to the corresponding QStandardItem. |
|
2108 |
||
2109 |
Note that this function will lazily create an item for the index (using |
|
2110 |
itemPrototype()), and set it in the parent item's child table, if no item |
|
2111 |
already exists at that index. |
|
2112 |
||
2113 |
If \a index is an invalid index, this function returns 0. |
|
2114 |
||
2115 |
\sa indexFromItem() |
|
2116 |
*/ |
|
2117 |
QStandardItem *QStandardItemModel::itemFromIndex(const QModelIndex &index) const |
|
2118 |
{
|
|
2119 |
Q_D(const QStandardItemModel); |
|
2120 |
if ((index.row() < 0) || (index.column() < 0) || (index.model() != this)) |
|
2121 |
return 0; |
|
2122 |
QStandardItem *parent = static_cast<QStandardItem*>(index.internalPointer()); |
|
2123 |
if (parent == 0) |
|
2124 |
return 0; |
|
2125 |
QStandardItem *item = parent->child(index.row(), index.column()); |
|
2126 |
// lazy part |
|
2127 |
if (item == 0) {
|
|
2128 |
item = d->createItem(); |
|
2129 |
parent->d_func()->setChild(index.row(), index.column(), item); |
|
2130 |
} |
|
2131 |
return item; |
|
2132 |
} |
|
2133 |
||
2134 |
/*! |
|
2135 |
\since 4.2 |
|
2136 |
||
2137 |
Returns the QModelIndex associated with the given \a item. |
|
2138 |
||
2139 |
Use this function when you want to perform an operation that requires the |
|
2140 |
QModelIndex of the item, such as |
|
2141 |
QAbstractItemView::scrollTo(). QStandardItem::index() is provided as |
|
2142 |
convenience; it is equivalent to calling this function. |
|
2143 |
||
2144 |
\sa itemFromIndex(), QStandardItem::index() |
|
2145 |
*/ |
|
2146 |
QModelIndex QStandardItemModel::indexFromItem(const QStandardItem *item) const |
|
2147 |
{
|
|
2148 |
if (item && item->d_func()->parent) {
|
|
2149 |
QPair<int, int> pos = item->d_func()->position(); |
|
2150 |
return createIndex(pos.first, pos.second, item->d_func()->parent); |
|
2151 |
} |
|
2152 |
return QModelIndex(); |
|
2153 |
} |
|
2154 |
||
2155 |
/*! |
|
2156 |
\since 4.2 |
|
2157 |
||
2158 |
Sets the number of rows in this model to \a rows. If |
|
2159 |
this is less than rowCount(), the data in the unwanted rows |
|
2160 |
is discarded. |
|
2161 |
||
2162 |
\sa setColumnCount() |
|
2163 |
*/ |
|
2164 |
void QStandardItemModel::setRowCount(int rows) |
|
2165 |
{
|
|
2166 |
Q_D(QStandardItemModel); |
|
2167 |
d->root->setRowCount(rows); |
|
2168 |
} |
|
2169 |
||
2170 |
/*! |
|
2171 |
\since 4.2 |
|
2172 |
||
2173 |
Sets the number of columns in this model to \a columns. If |
|
2174 |
this is less than columnCount(), the data in the unwanted columns |
|
2175 |
is discarded. |
|
2176 |
||
2177 |
\sa setRowCount() |
|
2178 |
*/ |
|
2179 |
void QStandardItemModel::setColumnCount(int columns) |
|
2180 |
{
|
|
2181 |
Q_D(QStandardItemModel); |
|
2182 |
d->root->setColumnCount(columns); |
|
2183 |
} |
|
2184 |
||
2185 |
/*! |
|
2186 |
\since 4.2 |
|
2187 |
||
2188 |
Sets the item for the given \a row and \a column to \a item. The model |
|
2189 |
takes ownership of the item. If necessary, the row count and column count |
|
2190 |
are increased to fit the item. The previous item at the given location (if |
|
2191 |
there was one) is deleted. |
|
2192 |
||
2193 |
\sa item() |
|
2194 |
*/ |
|
2195 |
void QStandardItemModel::setItem(int row, int column, QStandardItem *item) |
|
2196 |
{
|
|
2197 |
Q_D(QStandardItemModel); |
|
2198 |
d->root->d_func()->setChild(row, column, item, true); |
|
2199 |
} |
|
2200 |
||
2201 |
/*! |
|
2202 |
\fn QStandardItemModel::setItem(int row, QStandardItem *item) |
|
2203 |
\overload |
|
2204 |
*/ |
|
2205 |
||
2206 |
/*! |
|
2207 |
\since 4.2 |
|
2208 |
||
2209 |
Returns the item for the given \a row and \a column if one has been set; |
|
2210 |
otherwise returns 0. |
|
2211 |
||
2212 |
\sa setItem(), takeItem(), itemFromIndex() |
|
2213 |
*/ |
|
2214 |
QStandardItem *QStandardItemModel::item(int row, int column) const |
|
2215 |
{
|
|
2216 |
Q_D(const QStandardItemModel); |
|
2217 |
return d->root->child(row, column); |
|
2218 |
} |
|
2219 |
||
2220 |
/*! |
|
2221 |
\since 4.2 |
|
2222 |
||
2223 |
Returns the model's invisible root item. |
|
2224 |
||
2225 |
The invisible root item provides access to the model's top-level items |
|
2226 |
through the QStandardItem API, making it possible to write functions that |
|
2227 |
can treat top-level items and their children in a uniform way; for |
|
2228 |
example, recursive functions involving a tree model. |
|
2229 |
||
2230 |
\note Calling \l{QAbstractItemModel::index()}{index()} on the QStandardItem object
|
|
2231 |
retrieved from this function is not valid. |
|
2232 |
*/ |
|
2233 |
QStandardItem *QStandardItemModel::invisibleRootItem() const |
|
2234 |
{
|
|
2235 |
Q_D(const QStandardItemModel); |
|
2236 |
return d->root.data(); |
|
2237 |
} |
|
2238 |
||
2239 |
/*! |
|
2240 |
\since 4.2 |
|
2241 |
||
2242 |
Sets the horizontal header item for \a column to \a item. The model takes |
|
2243 |
ownership of the item. If necessary, the column count is increased to fit |
|
2244 |
the item. The previous header item (if there was one) is deleted. |
|
2245 |
||
2246 |
\sa horizontalHeaderItem(), setHorizontalHeaderLabels(), |
|
2247 |
setVerticalHeaderItem() |
|
2248 |
*/ |
|
2249 |
void QStandardItemModel::setHorizontalHeaderItem(int column, QStandardItem *item) |
|
2250 |
{
|
|
2251 |
Q_D(QStandardItemModel); |
|
2252 |
if (column < 0) |
|
2253 |
return; |
|
2254 |
if (columnCount() <= column) |
|
2255 |
setColumnCount(column + 1); |
|
2256 |
||
2257 |
QStandardItem *oldItem = d->columnHeaderItems.at(column); |
|
2258 |
if (item == oldItem) |
|
2259 |
return; |
|
2260 |
||
2261 |
if (item) {
|
|
2262 |
if (item->model() == 0) {
|
|
2263 |
item->d_func()->setModel(this); |
|
2264 |
} else {
|
|
2265 |
qWarning("QStandardItem::setHorizontalHeaderItem: Ignoring duplicate insertion of item %p",
|
|
2266 |
item); |
|
2267 |
return; |
|
2268 |
} |
|
2269 |
} |
|
2270 |
||
2271 |
if (oldItem) |
|
2272 |
oldItem->d_func()->setModel(0); |
|
2273 |
delete oldItem; |
|
2274 |
||
2275 |
d->columnHeaderItems.replace(column, item); |
|
2276 |
emit headerDataChanged(Qt::Horizontal, column, column); |
|
2277 |
} |
|
2278 |
||
2279 |
/*! |
|
2280 |
\since 4.2 |
|
2281 |
||
2282 |
Returns the horizontal header item for \a column if one has been set; |
|
2283 |
otherwise returns 0. |
|
2284 |
||
2285 |
\sa setHorizontalHeaderItem(), verticalHeaderItem() |
|
2286 |
*/ |
|
2287 |
QStandardItem *QStandardItemModel::horizontalHeaderItem(int column) const |
|
2288 |
{
|
|
2289 |
Q_D(const QStandardItemModel); |
|
2290 |
if ((column < 0) || (column >= columnCount())) |
|
2291 |
return 0; |
|
2292 |
return d->columnHeaderItems.at(column); |
|
2293 |
} |
|
2294 |
||
2295 |
/*! |
|
2296 |
\since 4.2 |
|
2297 |
||
2298 |
Sets the vertical header item for \a row to \a item. The model takes |
|
2299 |
ownership of the item. If necessary, the row count is increased to fit the |
|
2300 |
item. The previous header item (if there was one) is deleted. |
|
2301 |
||
2302 |
\sa verticalHeaderItem(), setVerticalHeaderLabels(), |
|
2303 |
setHorizontalHeaderItem() |
|
2304 |
*/ |
|
2305 |
void QStandardItemModel::setVerticalHeaderItem(int row, QStandardItem *item) |
|
2306 |
{
|
|
2307 |
Q_D(QStandardItemModel); |
|
2308 |
if (row < 0) |
|
2309 |
return; |
|
2310 |
if (rowCount() <= row) |
|
2311 |
setRowCount(row + 1); |
|
2312 |
||
2313 |
QStandardItem *oldItem = d->rowHeaderItems.at(row); |
|
2314 |
if (item == oldItem) |
|
2315 |
return; |
|
2316 |
||
2317 |
if (item) {
|
|
2318 |
if (item->model() == 0) {
|
|
2319 |
item->d_func()->setModel(this); |
|
2320 |
} else {
|
|
2321 |
qWarning("QStandardItem::setVerticalHeaderItem: Ignoring duplicate insertion of item %p",
|
|
2322 |
item); |
|
2323 |
return; |
|
2324 |
} |
|
2325 |
} |
|
2326 |
||
2327 |
if (oldItem) |
|
2328 |
oldItem->d_func()->setModel(0); |
|
2329 |
delete oldItem; |
|
2330 |
||
2331 |
d->rowHeaderItems.replace(row, item); |
|
2332 |
emit headerDataChanged(Qt::Vertical, row, row); |
|
2333 |
} |
|
2334 |
||
2335 |
/*! |
|
2336 |
\since 4.2 |
|
2337 |
||
2338 |
Returns the vertical header item for row \a row if one has been set; |
|
2339 |
otherwise returns 0. |
|
2340 |
||
2341 |
\sa setVerticalHeaderItem(), horizontalHeaderItem() |
|
2342 |
*/ |
|
2343 |
QStandardItem *QStandardItemModel::verticalHeaderItem(int row) const |
|
2344 |
{
|
|
2345 |
Q_D(const QStandardItemModel); |
|
2346 |
if ((row < 0) || (row >= rowCount())) |
|
2347 |
return 0; |
|
2348 |
return d->rowHeaderItems.at(row); |
|
2349 |
} |
|
2350 |
||
2351 |
/*! |
|
2352 |
\since 4.2 |
|
2353 |
||
2354 |
Sets the horizontal header labels using \a labels. If necessary, the |
|
2355 |
column count is increased to the size of \a labels. |
|
2356 |
||
2357 |
\sa setHorizontalHeaderItem() |
|
2358 |
*/ |
|
2359 |
void QStandardItemModel::setHorizontalHeaderLabels(const QStringList &labels) |
|
2360 |
{
|
|
2361 |
Q_D(QStandardItemModel); |
|
2362 |
if (columnCount() < labels.count()) |
|
2363 |
setColumnCount(labels.count()); |
|
2364 |
for (int i = 0; i < labels.count(); ++i) {
|
|
2365 |
QStandardItem *item = horizontalHeaderItem(i); |
|
2366 |
if (!item) {
|
|
2367 |
item = d->createItem(); |
|
2368 |
setHorizontalHeaderItem(i, item); |
|
2369 |
} |
|
2370 |
item->setText(labels.at(i)); |
|
2371 |
} |
|
2372 |
} |
|
2373 |
||
2374 |
/*! |
|
2375 |
\since 4.2 |
|
2376 |
||
2377 |
Sets the vertical header labels using \a labels. If necessary, the row |
|
2378 |
count is increased to the size of \a labels. |
|
2379 |
||
2380 |
\sa setVerticalHeaderItem() |
|
2381 |
*/ |
|
2382 |
void QStandardItemModel::setVerticalHeaderLabels(const QStringList &labels) |
|
2383 |
{
|
|
2384 |
Q_D(QStandardItemModel); |
|
2385 |
if (rowCount() < labels.count()) |
|
2386 |
setRowCount(labels.count()); |
|
2387 |
for (int i = 0; i < labels.count(); ++i) {
|
|
2388 |
QStandardItem *item = verticalHeaderItem(i); |
|
2389 |
if (!item) {
|
|
2390 |
item = d->createItem(); |
|
2391 |
setVerticalHeaderItem(i, item); |
|
2392 |
} |
|
2393 |
item->setText(labels.at(i)); |
|
2394 |
} |
|
2395 |
} |
|
2396 |
||
2397 |
/*! |
|
2398 |
\since 4.2 |
|
2399 |
||
2400 |
Sets the item prototype for the model to the specified \a item. The model |
|
2401 |
takes ownership of the prototype. |
|
2402 |
||
2403 |
The item prototype acts as a QStandardItem factory, by relying on the |
|
2404 |
QStandardItem::clone() function. To provide your own prototype, subclass |
|
2405 |
QStandardItem, reimplement QStandardItem::clone() and set the prototype to |
|
2406 |
be an instance of your custom class. Whenever QStandardItemModel needs to |
|
2407 |
create an item on demand (for instance, when a view or item delegate calls |
|
2408 |
setData())), the new items will be instances of your custom class. |
|
2409 |
||
2410 |
\sa itemPrototype(), QStandardItem::clone() |
|
2411 |
*/ |
|
2412 |
void QStandardItemModel::setItemPrototype(const QStandardItem *item) |
|
2413 |
{
|
|
2414 |
Q_D(QStandardItemModel); |
|
2415 |
if (d->itemPrototype != item) {
|
|
2416 |
delete d->itemPrototype; |
|
2417 |
d->itemPrototype = item; |
|
2418 |
} |
|
2419 |
} |
|
2420 |
||
2421 |
/*! |
|
2422 |
\since 4.2 |
|
2423 |
||
2424 |
Returns the item prototype used by the model. The model uses the item |
|
2425 |
prototype as an item factory when it needs to construct new items on |
|
2426 |
demand (for instance, when a view or item delegate calls setData()). |
|
2427 |
||
2428 |
\sa setItemPrototype() |
|
2429 |
*/ |
|
2430 |
const QStandardItem *QStandardItemModel::itemPrototype() const |
|
2431 |
{
|
|
2432 |
Q_D(const QStandardItemModel); |
|
2433 |
return d->itemPrototype; |
|
2434 |
} |
|
2435 |
||
2436 |
/*! |
|
2437 |
\since 4.2 |
|
2438 |
||
2439 |
Returns a list of items that match the given \a text, using the given \a |
|
2440 |
flags, in the given \a column. |
|
2441 |
*/ |
|
2442 |
QList<QStandardItem*> QStandardItemModel::findItems(const QString &text, |
|
2443 |
Qt::MatchFlags flags, int column) const |
|
2444 |
{
|
|
2445 |
QModelIndexList indexes = match(index(0, column, QModelIndex()), |
|
2446 |
Qt::DisplayRole, text, -1, flags); |
|
2447 |
QList<QStandardItem*> items; |
|
2448 |
for (int i = 0; i < indexes.size(); ++i) |
|
2449 |
items.append(itemFromIndex(indexes.at(i))); |
|
2450 |
return items; |
|
2451 |
} |
|
2452 |
||
2453 |
/*! |
|
2454 |
\since 4.2 |
|
2455 |
||
2456 |
Appends a row containing \a items. If necessary, the column count is |
|
2457 |
increased to the size of \a items. |
|
2458 |
||
2459 |
\sa insertRow(), appendColumn() |
|
2460 |
*/ |
|
2461 |
void QStandardItemModel::appendRow(const QList<QStandardItem*> &items) |
|
2462 |
{
|
|
2463 |
invisibleRootItem()->appendRow(items); |
|
2464 |
} |
|
2465 |
||
2466 |
/*! |
|
2467 |
\since 4.2 |
|
2468 |
||
2469 |
Appends a column containing \a items. If necessary, the row count is |
|
2470 |
increased to the size of \a items. |
|
2471 |
||
2472 |
\sa insertColumn(), appendRow() |
|
2473 |
*/ |
|
2474 |
void QStandardItemModel::appendColumn(const QList<QStandardItem*> &items) |
|
2475 |
{
|
|
2476 |
invisibleRootItem()->appendColumn(items); |
|
2477 |
} |
|
2478 |
||
2479 |
/*! |
|
2480 |
\since 4.2 |
|
2481 |
\fn QStandardItemModel::appendRow(QStandardItem *item) |
|
2482 |
\overload |
|
2483 |
||
2484 |
When building a list or a tree that has only one column, this function |
|
2485 |
provides a convenient way to append a single new \a item. |
|
2486 |
*/ |
|
2487 |
||
2488 |
/*! |
|
2489 |
\since 4.2 |
|
2490 |
||
2491 |
Inserts a row at \a row containing \a items. If necessary, the column |
|
2492 |
count is increased to the size of \a items. |
|
2493 |
||
2494 |
\sa takeRow(), appendRow(), insertColumn() |
|
2495 |
*/ |
|
2496 |
void QStandardItemModel::insertRow(int row, const QList<QStandardItem*> &items) |
|
2497 |
{
|
|
2498 |
invisibleRootItem()->insertRow(row, items); |
|
2499 |
} |
|
2500 |
||
2501 |
/*! |
|
2502 |
\since 4.2 |
|
2503 |
||
2504 |
\fn void QStandardItemModel::insertRow(int row, QStandardItem *item) |
|
2505 |
\overload |
|
2506 |
||
2507 |
Inserts a row at \a row containing \a item. |
|
2508 |
||
2509 |
When building a list or a tree that has only one column, this function |
|
2510 |
provides a convenient way to append a single new item. |
|
2511 |
*/ |
|
2512 |
||
2513 |
/*! |
|
2514 |
\since 4.2 |
|
2515 |
||
2516 |
Inserts a column at \a column containing \a items. If necessary, the row |
|
2517 |
count is increased to the size of \a items. |
|
2518 |
||
2519 |
\sa takeColumn(), appendColumn(), insertRow() |
|
2520 |
*/ |
|
2521 |
void QStandardItemModel::insertColumn(int column, const QList<QStandardItem*> &items) |
|
2522 |
{
|
|
2523 |
invisibleRootItem()->insertColumn(column, items); |
|
2524 |
} |
|
2525 |
||
2526 |
/*! |
|
2527 |
\since 4.2 |
|
2528 |
||
2529 |
Removes the item at (\a row, \a column) without deleting it. The model |
|
2530 |
releases ownership of the item. |
|
2531 |
||
2532 |
\sa item(), takeRow(), takeColumn() |
|
2533 |
*/ |
|
2534 |
QStandardItem *QStandardItemModel::takeItem(int row, int column) |
|
2535 |
{
|
|
2536 |
Q_D(QStandardItemModel); |
|
2537 |
return d->root->takeChild(row, column); |
|
2538 |
} |
|
2539 |
||
2540 |
/*! |
|
2541 |
\since 4.2 |
|
2542 |
||
2543 |
Removes the given \a row without deleting the row items, and returns a |
|
2544 |
list of pointers to the removed items. The model releases ownership of the |
|
2545 |
items. For items in the row that have not been set, the corresponding |
|
2546 |
pointers in the list will be 0. |
|
2547 |
||
2548 |
\sa takeColumn() |
|
2549 |
*/ |
|
2550 |
QList<QStandardItem*> QStandardItemModel::takeRow(int row) |
|
2551 |
{
|
|
2552 |
Q_D(QStandardItemModel); |
|
2553 |
return d->root->takeRow(row); |
|
2554 |
} |
|
2555 |
||
2556 |
/*! |
|
2557 |
\since 4.2 |
|
2558 |
||
2559 |
Removes the given \a column without deleting the column items, and returns |
|
2560 |
a list of pointers to the removed items. The model releases ownership of |
|
2561 |
the items. For items in the column that have not been set, the |
|
2562 |
corresponding pointers in the list will be 0. |
|
2563 |
||
2564 |
\sa takeRow() |
|
2565 |
*/ |
|
2566 |
QList<QStandardItem*> QStandardItemModel::takeColumn(int column) |
|
2567 |
{
|
|
2568 |
Q_D(QStandardItemModel); |
|
2569 |
return d->root->takeColumn(column); |
|
2570 |
} |
|
2571 |
||
2572 |
/*! |
|
2573 |
\since 4.2 |
|
2574 |
||
2575 |
Removes the horizontal header item at \a column from the header without |
|
2576 |
deleting it, and returns a pointer to the item. The model releases |
|
2577 |
ownership of the item. |
|
2578 |
||
2579 |
\sa horizontalHeaderItem(), takeVerticalHeaderItem() |
|
2580 |
*/ |
|
2581 |
QStandardItem *QStandardItemModel::takeHorizontalHeaderItem(int column) |
|
2582 |
{
|
|
2583 |
Q_D(QStandardItemModel); |
|
2584 |
if ((column < 0) || (column >= columnCount())) |
|
2585 |
return 0; |
|
2586 |
QStandardItem *headerItem = d->columnHeaderItems.at(column); |
|
2587 |
if (headerItem) {
|
|
2588 |
headerItem->d_func()->setParentAndModel(0, 0); |
|
2589 |
d->columnHeaderItems.replace(column, 0); |
|
2590 |
} |
|
2591 |
return headerItem; |
|
2592 |
} |
|
2593 |
||
2594 |
/*! |
|
2595 |
\since 4.2 |
|
2596 |
||
2597 |
Removes the vertical header item at \a row from the header without |
|
2598 |
deleting it, and returns a pointer to the item. The model releases |
|
2599 |
ownership of the item. |
|
2600 |
||
2601 |
\sa verticalHeaderItem(), takeHorizontalHeaderItem() |
|
2602 |
*/ |
|
2603 |
QStandardItem *QStandardItemModel::takeVerticalHeaderItem(int row) |
|
2604 |
{
|
|
2605 |
Q_D(QStandardItemModel); |
|
2606 |
if ((row < 0) || (row >= rowCount())) |
|
2607 |
return 0; |
|
2608 |
QStandardItem *headerItem = d->rowHeaderItems.at(row); |
|
2609 |
if (headerItem) {
|
|
2610 |
headerItem->d_func()->setParentAndModel(0, 0); |
|
2611 |
d->rowHeaderItems.replace(row, 0); |
|
2612 |
} |
|
2613 |
return headerItem; |
|
2614 |
} |
|
2615 |
||
2616 |
/*! |
|
2617 |
\since 4.2 |
|
2618 |
\property QStandardItemModel::sortRole |
|
2619 |
\brief the item role that is used to query the model's data when sorting items |
|
2620 |
||
2621 |
The default value is Qt::DisplayRole. |
|
2622 |
||
2623 |
\sa sort(), QStandardItem::sortChildren() |
|
2624 |
*/ |
|
2625 |
int QStandardItemModel::sortRole() const |
|
2626 |
{
|
|
2627 |
Q_D(const QStandardItemModel); |
|
2628 |
return d->sortRole; |
|
2629 |
} |
|
2630 |
||
2631 |
void QStandardItemModel::setSortRole(int role) |
|
2632 |
{
|
|
2633 |
Q_D(QStandardItemModel); |
|
2634 |
d->sortRole = role; |
|
2635 |
} |
|
2636 |
||
2637 |
/*! |
|
2638 |
\reimp |
|
2639 |
*/ |
|
2640 |
int QStandardItemModel::columnCount(const QModelIndex &parent) const |
|
2641 |
{
|
|
2642 |
Q_D(const QStandardItemModel); |
|
2643 |
QStandardItem *item = d->itemFromIndex(parent); |
|
2644 |
return item ? item->columnCount() : 0; |
|
2645 |
} |
|
2646 |
||
2647 |
/*! |
|
2648 |
\reimp |
|
2649 |
*/ |
|
2650 |
QVariant QStandardItemModel::data(const QModelIndex &index, int role) const |
|
2651 |
{
|
|
2652 |
Q_D(const QStandardItemModel); |
|
2653 |
QStandardItem *item = d->itemFromIndex(index); |
|
2654 |
return item ? item->data(role) : QVariant(); |
|
2655 |
} |
|
2656 |
||
2657 |
/*! |
|
2658 |
\reimp |
|
2659 |
*/ |
|
2660 |
Qt::ItemFlags QStandardItemModel::flags(const QModelIndex &index) const |
|
2661 |
{
|
|
2662 |
Q_D(const QStandardItemModel); |
|
2663 |
if (!d->indexValid(index)) |
|
2664 |
return d->root->flags(); |
|
2665 |
QStandardItem *item = d->itemFromIndex(index); |
|
2666 |
if (item) |
|
2667 |
return item->flags(); |
|
2668 |
return Qt::ItemIsSelectable |
|
2669 |
|Qt::ItemIsEnabled |
|
2670 |
|Qt::ItemIsEditable |
|
2671 |
|Qt::ItemIsDragEnabled |
|
2672 |
|Qt::ItemIsDropEnabled; |
|
2673 |
} |
|
2674 |
||
2675 |
/*! |
|
2676 |
\reimp |
|
2677 |
*/ |
|
2678 |
bool QStandardItemModel::hasChildren(const QModelIndex &parent) const |
|
2679 |
{
|
|
2680 |
Q_D(const QStandardItemModel); |
|
2681 |
QStandardItem *item = d->itemFromIndex(parent); |
|
2682 |
return item ? item->hasChildren() : false; |
|
2683 |
} |
|
2684 |
||
2685 |
/*! |
|
2686 |
\reimp |
|
2687 |
*/ |
|
2688 |
QVariant QStandardItemModel::headerData(int section, Qt::Orientation orientation, int role) const |
|
2689 |
{
|
|
2690 |
Q_D(const QStandardItemModel); |
|
2691 |
if ((section < 0) |
|
2692 |
|| ((orientation == Qt::Horizontal) && (section >= columnCount())) |
|
2693 |
|| ((orientation == Qt::Vertical) && (section >= rowCount()))) {
|
|
2694 |
return QVariant(); |
|
2695 |
} |
|
2696 |
QStandardItem *headerItem = 0; |
|
2697 |
if (orientation == Qt::Horizontal) |
|
2698 |
headerItem = d->columnHeaderItems.at(section); |
|
2699 |
else if (orientation == Qt::Vertical) |
|
2700 |
headerItem = d->rowHeaderItems.at(section); |
|
2701 |
return headerItem ? headerItem->data(role) |
|
2702 |
: QAbstractItemModel::headerData(section, orientation, role); |
|
2703 |
} |
|
2704 |
||
2705 |
/*! |
|
2706 |
\reimp |
|
2707 |
||
2708 |
QStandardItemModel supports both copy and move. |
|
2709 |
*/ |
|
2710 |
Qt::DropActions QStandardItemModel::supportedDropActions () const |
|
2711 |
{
|
|
2712 |
return Qt::CopyAction | Qt::MoveAction; |
|
2713 |
} |
|
2714 |
||
2715 |
/*! |
|
2716 |
\reimp |
|
2717 |
*/ |
|
2718 |
QModelIndex QStandardItemModel::index(int row, int column, const QModelIndex &parent) const |
|
2719 |
{
|
|
2720 |
Q_D(const QStandardItemModel); |
|
2721 |
QStandardItem *parentItem = d->itemFromIndex(parent); |
|
2722 |
if ((parentItem == 0) |
|
2723 |
|| (row < 0) |
|
2724 |
|| (column < 0) |
|
2725 |
|| (row >= parentItem->rowCount()) |
|
2726 |
|| (column >= parentItem->columnCount())) {
|
|
2727 |
return QModelIndex(); |
|
2728 |
} |
|
2729 |
return createIndex(row, column, parentItem); |
|
2730 |
} |
|
2731 |
||
2732 |
/*! |
|
2733 |
\reimp |
|
2734 |
*/ |
|
2735 |
bool QStandardItemModel::insertColumns(int column, int count, const QModelIndex &parent) |
|
2736 |
{
|
|
2737 |
Q_D(QStandardItemModel); |
|
2738 |
QStandardItem *item = parent.isValid() ? itemFromIndex(parent) : d->root.data(); |
|
2739 |
if (item == 0) |
|
2740 |
return false; |
|
2741 |
return item->d_func()->insertColumns(column, count, QList<QStandardItem*>()); |
|
2742 |
} |
|
2743 |
||
2744 |
/*! |
|
2745 |
\reimp |
|
2746 |
*/ |
|
2747 |
bool QStandardItemModel::insertRows(int row, int count, const QModelIndex &parent) |
|
2748 |
{
|
|
2749 |
Q_D(QStandardItemModel); |
|
2750 |
QStandardItem *item = parent.isValid() ? itemFromIndex(parent) : d->root.data(); |
|
2751 |
if (item == 0) |
|
2752 |
return false; |
|
2753 |
return item->d_func()->insertRows(row, count, QList<QStandardItem*>()); |
|
2754 |
} |
|
2755 |
||
2756 |
/*! |
|
2757 |
\reimp |
|
2758 |
*/ |
|
2759 |
QMap<int, QVariant> QStandardItemModel::itemData(const QModelIndex &index) const |
|
2760 |
{
|
|
2761 |
Q_D(const QStandardItemModel); |
|
2762 |
QStandardItem *item = d->itemFromIndex(index); |
|
2763 |
return item ? item->d_func()->itemData() : QMap<int, QVariant>(); |
|
2764 |
} |
|
2765 |
||
2766 |
/*! |
|
2767 |
\reimp |
|
2768 |
*/ |
|
2769 |
QModelIndex QStandardItemModel::parent(const QModelIndex &child) const |
|
2770 |
{
|
|
2771 |
Q_D(const QStandardItemModel); |
|
2772 |
if (!d->indexValid(child)) |
|
2773 |
return QModelIndex(); |
|
2774 |
QStandardItem *parentItem = static_cast<QStandardItem*>(child.internalPointer()); |
|
2775 |
return indexFromItem(parentItem); |
|
2776 |
} |
|
2777 |
||
2778 |
/*! |
|
2779 |
\reimp |
|
2780 |
*/ |
|
2781 |
bool QStandardItemModel::removeColumns(int column, int count, const QModelIndex &parent) |
|
2782 |
{
|
|
2783 |
Q_D(QStandardItemModel); |
|
2784 |
QStandardItem *item = d->itemFromIndex(parent); |
|
2785 |
if ((item == 0) || (count < 1) || (column < 0) || ((column + count) > item->columnCount())) |
|
2786 |
return false; |
|
2787 |
item->removeColumns(column, count); |
|
2788 |
return true; |
|
2789 |
} |
|
2790 |
||
2791 |
/*! |
|
2792 |
\reimp |
|
2793 |
*/ |
|
2794 |
bool QStandardItemModel::removeRows(int row, int count, const QModelIndex &parent) |
|
2795 |
{
|
|
2796 |
Q_D(QStandardItemModel); |
|
2797 |
QStandardItem *item = d->itemFromIndex(parent); |
|
2798 |
if ((item == 0) || (count < 1) || (row < 0) || ((row + count) > item->rowCount())) |
|
2799 |
return false; |
|
2800 |
item->removeRows(row, count); |
|
2801 |
return true; |
|
2802 |
} |
|
2803 |
||
2804 |
/*! |
|
2805 |
\reimp |
|
2806 |
*/ |
|
2807 |
int QStandardItemModel::rowCount(const QModelIndex &parent) const |
|
2808 |
{
|
|
2809 |
Q_D(const QStandardItemModel); |
|
2810 |
QStandardItem *item = d->itemFromIndex(parent); |
|
2811 |
return item ? item->rowCount() : 0; |
|
2812 |
} |
|
2813 |
||
2814 |
/*! |
|
2815 |
\reimp |
|
2816 |
*/ |
|
2817 |
bool QStandardItemModel::setData(const QModelIndex &index, const QVariant &value, int role) |
|
2818 |
{
|
|
2819 |
if (!index.isValid()) |
|
2820 |
return false; |
|
2821 |
QStandardItem *item = itemFromIndex(index); |
|
2822 |
if (item == 0) |
|
2823 |
return false; |
|
2824 |
item->setData(value, role); |
|
2825 |
return true; |
|
2826 |
} |
|
2827 |
||
2828 |
/*! |
|
2829 |
\reimp |
|
2830 |
*/ |
|
2831 |
bool QStandardItemModel::setHeaderData(int section, Qt::Orientation orientation, const QVariant &value, int role) |
|
2832 |
{
|
|
2833 |
Q_D(QStandardItemModel); |
|
2834 |
if ((section < 0) |
|
2835 |
|| ((orientation == Qt::Horizontal) && (section >= columnCount())) |
|
2836 |
|| ((orientation == Qt::Vertical) && (section >= rowCount()))) {
|
|
2837 |
return false; |
|
2838 |
} |
|
2839 |
QStandardItem *headerItem = 0; |
|
2840 |
if (orientation == Qt::Horizontal) {
|
|
2841 |
headerItem = d->columnHeaderItems.at(section); |
|
2842 |
if (headerItem == 0) {
|
|
2843 |
headerItem = d->createItem(); |
|
2844 |
headerItem->d_func()->setModel(this); |
|
2845 |
d->columnHeaderItems.replace(section, headerItem); |
|
2846 |
} |
|
2847 |
} else if (orientation == Qt::Vertical) {
|
|
2848 |
headerItem = d->rowHeaderItems.at(section); |
|
2849 |
if (headerItem == 0) {
|
|
2850 |
headerItem = d->createItem(); |
|
2851 |
headerItem->d_func()->setModel(this); |
|
2852 |
d->rowHeaderItems.replace(section, headerItem); |
|
2853 |
} |
|
2854 |
} |
|
2855 |
if (headerItem) {
|
|
2856 |
headerItem->setData(value, role); |
|
2857 |
return true; |
|
2858 |
} |
|
2859 |
return false; |
|
2860 |
} |
|
2861 |
||
2862 |
/*! |
|
2863 |
\reimp |
|
2864 |
*/ |
|
2865 |
bool QStandardItemModel::setItemData(const QModelIndex &index, const QMap<int, QVariant> &roles) |
|
2866 |
{
|
|
2867 |
QStandardItem *item = itemFromIndex(index); |
|
2868 |
if (item == 0) |
|
2869 |
return false; |
|
2870 |
item->d_func()->setItemData(roles); |
|
2871 |
return true; |
|
2872 |
} |
|
2873 |
||
2874 |
/*! |
|
2875 |
\reimp |
|
2876 |
*/ |
|
2877 |
void QStandardItemModel::sort(int column, Qt::SortOrder order) |
|
2878 |
{
|
|
2879 |
Q_D(QStandardItemModel); |
|
2880 |
d->root->sortChildren(column, order); |
|
2881 |
} |
|
2882 |
||
2883 |
/*! |
|
2884 |
\fn QObject *QStandardItemModel::parent() const |
|
2885 |
\internal |
|
2886 |
*/ |
|
2887 |
||
2888 |
||
2889 |
/*! |
|
2890 |
\reimp |
|
2891 |
*/ |
|
2892 |
QStringList QStandardItemModel::mimeTypes() const |
|
2893 |
{
|
|
2894 |
return QAbstractItemModel::mimeTypes() << QLatin1String("application/x-qstandarditemmodeldatalist");
|
|
2895 |
} |
|
2896 |
||
2897 |
/*! |
|
2898 |
\reimp |
|
2899 |
*/ |
|
2900 |
QMimeData *QStandardItemModel::mimeData(const QModelIndexList &indexes) const |
|
2901 |
{
|
|
2902 |
QMimeData *data = QAbstractItemModel::mimeData(indexes); |
|
2903 |
if(!data) |
|
2904 |
return 0; |
|
2905 |
||
2906 |
QString format = QLatin1String("application/x-qstandarditemmodeldatalist");
|
|
2907 |
if (!mimeTypes().contains(format)) |
|
2908 |
return data; |
|
2909 |
QByteArray encoded; |
|
2910 |
QDataStream stream(&encoded, QIODevice::WriteOnly); |
|
2911 |
||
2912 |
QSet<QStandardItem*> itemsSet; |
|
2913 |
QStack<QStandardItem*> stack; |
|
2914 |
itemsSet.reserve(indexes.count()); |
|
2915 |
stack.reserve(indexes.count()); |
|
2916 |
for (int i = 0; i < indexes.count(); ++i) {
|
|
2917 |
QStandardItem *item = itemFromIndex(indexes.at(i)); |
|
2918 |
itemsSet << item; |
|
2919 |
stack.push(item); |
|
2920 |
} |
|
2921 |
||
2922 |
//remove duplicates childrens |
|
2923 |
{
|
|
2924 |
QSet<QStandardItem *> seen; |
|
2925 |
while (!stack.isEmpty()) {
|
|
2926 |
QStandardItem *itm = stack.pop(); |
|
2927 |
if (seen.contains(itm)) |
|
2928 |
continue; |
|
2929 |
seen.insert(itm); |
|
2930 |
||
2931 |
const QVector<QStandardItem*> &childList = itm->d_func()->children; |
|
2932 |
for (int i = 0; i < childList.count(); ++i) {
|
|
2933 |
QStandardItem *chi = childList.at(i); |
|
2934 |
if (chi) {
|
|
2935 |
QSet<QStandardItem *>::iterator it = itemsSet.find(chi); |
|
2936 |
if (it != itemsSet.end()) {
|
|
2937 |
itemsSet.erase(it); |
|
2938 |
} |
|
2939 |
stack.push(chi); |
|
2940 |
} |
|
2941 |
} |
|
2942 |
} |
|
2943 |
} |
|
2944 |
||
2945 |
stack.reserve(itemsSet.count()); |
|
2946 |
foreach (QStandardItem *item, itemsSet) {
|
|
2947 |
stack.push(item); |
|
2948 |
} |
|
2949 |
||
2950 |
//stream everything recursively |
|
2951 |
while (!stack.isEmpty()) {
|
|
2952 |
QStandardItem *item = stack.pop(); |
|
2953 |
if(itemsSet.contains(item)) { //if the item is selection 'top-level', strem its position
|
|
2954 |
stream << item->row() << item->column(); |
|
2955 |
} |
|
2956 |
if(item) {
|
|
2957 |
stream << *item << item->columnCount() << item->d_ptr->children.count(); |
|
2958 |
stack += item->d_ptr->children; |
|
2959 |
} else {
|
|
2960 |
QStandardItem dummy; |
|
2961 |
stream << dummy << 0 << 0; |
|
2962 |
} |
|
2963 |
} |
|
2964 |
||
2965 |
data->setData(format, encoded); |
|
2966 |
return data; |
|
2967 |
} |
|
2968 |
||
2969 |
||
2970 |
/* \internal |
|
2971 |
Used by QStandardItemModel::dropMimeData |
|
2972 |
stream out an item and his children |
|
2973 |
*/ |
|
2974 |
void QStandardItemModelPrivate::decodeDataRecursive(QDataStream &stream, QStandardItem *item) |
|
2975 |
{
|
|
2976 |
int colCount, childCount; |
|
2977 |
stream >> *item; |
|
2978 |
stream >> colCount >> childCount; |
|
2979 |
item->setColumnCount(colCount); |
|
2980 |
||
2981 |
int childPos = childCount; |
|
2982 |
||
2983 |
while(childPos > 0) {
|
|
2984 |
childPos--; |
|
2985 |
QStandardItem *child = createItem(); |
|
2986 |
decodeDataRecursive(stream, child); |
|
2987 |
item->setChild( childPos / colCount, childPos % colCount, child); |
|
2988 |
} |
|
2989 |
} |
|
2990 |
||
2991 |
||
2992 |
/*! |
|
2993 |
\reimp |
|
2994 |
*/ |
|
2995 |
bool QStandardItemModel::dropMimeData(const QMimeData *data, Qt::DropAction action, |
|
2996 |
int row, int column, const QModelIndex &parent) |
|
2997 |
{
|
|
2998 |
Q_D(QStandardItemModel); |
|
2999 |
// check if the action is supported |
|
3000 |
if (!data || !(action == Qt::CopyAction || action == Qt::MoveAction)) |
|
3001 |
return false; |
|
3002 |
// check if the format is supported |
|
3003 |
QString format = QLatin1String("application/x-qstandarditemmodeldatalist");
|
|
3004 |
if (!data->hasFormat(format)) |
|
3005 |
return QAbstractItemModel::dropMimeData(data, action, row, column, parent); |
|
3006 |
||
3007 |
if (row > rowCount(parent)) |
|
3008 |
row = rowCount(parent); |
|
3009 |
if (row == -1) |
|
3010 |
row = rowCount(parent); |
|
3011 |
if (column == -1) |
|
3012 |
column = 0; |
|
3013 |
||
3014 |
// decode and insert |
|
3015 |
QByteArray encoded = data->data(format); |
|
3016 |
QDataStream stream(&encoded, QIODevice::ReadOnly); |
|
3017 |
||
3018 |
||
3019 |
//code based on QAbstractItemModel::decodeData |
|
3020 |
// adapted to work with QStandardItem |
|
3021 |
int top = INT_MAX; |
|
3022 |
int left = INT_MAX; |
|
3023 |
int bottom = 0; |
|
3024 |
int right = 0; |
|
3025 |
QVector<int> rows, columns; |
|
3026 |
QVector<QStandardItem *> items; |
|
3027 |
||
3028 |
while (!stream.atEnd()) {
|
|
3029 |
int r, c; |
|
3030 |
QStandardItem *item = d->createItem(); |
|
3031 |
stream >> r >> c; |
|
3032 |
d->decodeDataRecursive(stream, item); |
|
3033 |
||
3034 |
rows.append(r); |
|
3035 |
columns.append(c); |
|
3036 |
items.append(item); |
|
3037 |
top = qMin(r, top); |
|
3038 |
left = qMin(c, left); |
|
3039 |
bottom = qMax(r, bottom); |
|
3040 |
right = qMax(c, right); |
|
3041 |
} |
|
3042 |
||
3043 |
// insert the dragged items into the table, use a bit array to avoid overwriting items, |
|
3044 |
// since items from different tables can have the same row and column |
|
3045 |
int dragRowCount = 0; |
|
3046 |
int dragColumnCount = right - left + 1; |
|
3047 |
||
3048 |
// Compute the number of continuous rows upon insertion and modify the rows to match |
|
3049 |
QVector<int> rowsToInsert(bottom + 1); |
|
3050 |
for (int i = 0; i < rows.count(); ++i) |
|
3051 |
rowsToInsert[rows.at(i)] = 1; |
|
3052 |
for (int i = 0; i < rowsToInsert.count(); ++i) {
|
|
3053 |
if (rowsToInsert[i] == 1){
|
|
3054 |
rowsToInsert[i] = dragRowCount; |
|
3055 |
++dragRowCount; |
|
3056 |
} |
|
3057 |
} |
|
3058 |
for (int i = 0; i < rows.count(); ++i) |
|
3059 |
rows[i] = top + rowsToInsert[rows[i]]; |
|
3060 |
||
3061 |
QBitArray isWrittenTo(dragRowCount * dragColumnCount); |
|
3062 |
||
3063 |
// make space in the table for the dropped data |
|
3064 |
int colCount = columnCount(parent); |
|
3065 |
if (colCount < dragColumnCount + column) {
|
|
3066 |
insertColumns(colCount, dragColumnCount + column - colCount, parent); |
|
3067 |
colCount = columnCount(parent); |
|
3068 |
} |
|
3069 |
insertRows(row, dragRowCount, parent); |
|
3070 |
||
3071 |
row = qMax(0, row); |
|
3072 |
column = qMax(0, column); |
|
3073 |
||
3074 |
QStandardItem *parentItem = itemFromIndex (parent); |
|
3075 |
if (!parentItem) |
|
3076 |
parentItem = invisibleRootItem(); |
|
3077 |
||
3078 |
QVector<QPersistentModelIndex> newIndexes(items.size()); |
|
3079 |
// set the data in the table |
|
3080 |
for (int j = 0; j < items.size(); ++j) {
|
|
3081 |
int relativeRow = rows.at(j) - top; |
|
3082 |
int relativeColumn = columns.at(j) - left; |
|
3083 |
int destinationRow = relativeRow + row; |
|
3084 |
int destinationColumn = relativeColumn + column; |
|
3085 |
int flat = (relativeRow * dragColumnCount) + relativeColumn; |
|
3086 |
// if the item was already written to, or we just can't fit it in the table, create a new row |
|
3087 |
if (destinationColumn >= colCount || isWrittenTo.testBit(flat)) {
|
|
3088 |
destinationColumn = qBound(column, destinationColumn, colCount - 1); |
|
3089 |
destinationRow = row + dragRowCount; |
|
3090 |
insertRows(row + dragRowCount, 1, parent); |
|
3091 |
flat = (dragRowCount * dragColumnCount) + relativeColumn; |
|
3092 |
isWrittenTo.resize(++dragRowCount * dragColumnCount); |
|
3093 |
} |
|
3094 |
if (!isWrittenTo.testBit(flat)) {
|
|
3095 |
newIndexes[j] = index(destinationRow, destinationColumn, parentItem->index()); |
|
3096 |
isWrittenTo.setBit(flat); |
|
3097 |
} |
|
3098 |
} |
|
3099 |
||
3100 |
for(int k = 0; k < newIndexes.size(); k++) {
|
|
3101 |
if (newIndexes.at(k).isValid()) {
|
|
3102 |
parentItem->setChild(newIndexes.at(k).row(), newIndexes.at(k).column(), items.at(k)); |
|
3103 |
} else {
|
|
3104 |
delete items.at(k); |
|
3105 |
} |
|
3106 |
} |
|
3107 |
||
3108 |
return true; |
|
3109 |
} |
|
3110 |
||
3111 |
QT_END_NAMESPACE |
|
3112 |
||
3113 |
#include "moc_qstandarditemmodel.cpp" |
|
3114 |
||
3115 |
#endif // QT_NO_STANDARDITEMMODEL |