diff options
Diffstat (limited to 'src/corelib/doc/snippets/code/src_corelib_kernel_qabstractitemmodel.cpp')
-rw-r--r-- | src/corelib/doc/snippets/code/src_corelib_kernel_qabstractitemmodel.cpp | 106 |
1 files changed, 47 insertions, 59 deletions
diff --git a/src/corelib/doc/snippets/code/src_corelib_kernel_qabstractitemmodel.cpp b/src/corelib/doc/snippets/code/src_corelib_kernel_qabstractitemmodel.cpp index 2e055ec439..4fd7f97ae8 100644 --- a/src/corelib/doc/snippets/code/src_corelib_kernel_qabstractitemmodel.cpp +++ b/src/corelib/doc/snippets/code/src_corelib_kernel_qabstractitemmodel.cpp @@ -1,52 +1,5 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause //! [0] beginInsertRows(parent, 2, 4); @@ -97,16 +50,6 @@ beginMoveRows(parent, 2, 2, parent, 0); beginMoveRows(parent, 2, 2, parent, 4); //! [9] -//! [10] -myData.clear(); -reset(); -//! [10] - -//! [11] -beginResetModel(); -myData.clear(); -endResetModel(); -//! [11] //! [12] class CustomDataProxy : public QSortFilterProxyModel @@ -141,3 +84,48 @@ private: }; //! [12] +//! [13] +QVariant text = model->data(index, Qt::DisplayRole); +QVariant decoration = model->data(index, Qt::DecorationRole); +QVariant checkState = model->data(index, Qt::CheckStateRole); +// etc. +//! [13] + +//! [14] +std::array<QModelRoleData, 3> roleData = { { + QModelRoleData(Qt::DisplayRole), + QModelRoleData(Qt::DecorationRole), + QModelRoleData(Qt::CheckStateRole) +} }; + +// Usually, this is not necessary: A QModelRoleDataSpan +// will be built automatically for you when passing an array-like +// container to multiData(). +QModelRoleDataSpan span(roleData); + +model->multiData(index, span); + +// Use roleData[0].data(), roleData[1].data(), etc. +//! [14] + +//! [15] +void MyModel::multiData(const QModelIndex &index, QModelRoleDataSpan roleDataSpan) const +{ + for (QModelRoleData &roleData : roleDataSpan) { + int role = roleData.role(); + + // ... obtain the data for index and role ... + + roleData.setData(result); + } +} +//! [15] + +//! [16] +QVariant MyModel::data(const QModelIndex &index, int role) const +{ + QModelRoleData roleData(role); + multiData(index, roleData); + return roleData.data(); +} +//! [16] |