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Diffstat (limited to 'sources/pyside2/doc/codesnippets/doc/src/snippets/stringlistmodel/model.cpp')
-rw-r--r-- | sources/pyside2/doc/codesnippets/doc/src/snippets/stringlistmodel/model.cpp | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/sources/pyside2/doc/codesnippets/doc/src/snippets/stringlistmodel/model.cpp b/sources/pyside2/doc/codesnippets/doc/src/snippets/stringlistmodel/model.cpp new file mode 100644 index 000000000..a63496f21 --- /dev/null +++ b/sources/pyside2/doc/codesnippets/doc/src/snippets/stringlistmodel/model.cpp @@ -0,0 +1,170 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the examples of PySide2. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +/* + model.cpp + + A simple model that uses a QStringList as its data source. +*/ + +/*! + Returns the number of items in the string list as the number of rows + in the model. +*/ + +//! [0] +def rowCount(self, parent): + return len(self.stringList) +//! [0] + +/*! + Returns an appropriate value for the requested data. + If the view requests an invalid index, an invalid variant is returned. + Any valid index that corresponds to a string in the list causes that + string to be returned. +*/ + +//! [1] +def data(self, index, role): + if not index.isValid(): + return None + + if index.row() >= stringList.size(): + return None + + if role == Qt.DisplayRole: + return stringList[index.row()] + else + return None +//! [1] + +/*! + Returns the appropriate header string depending on the orientation of + the header and the section. If anything other than the display role is + requested, we return an invalid variant. +*/ + +//! [2] +def headerData(self, section, orientation, role): + if role != Qt::DisplayRole: + return None + + if orientation == Qt::Horizontal: + return "Column %s" % section + else: + return "Row %s" % section +//! [2] + +/*! + Returns an appropriate value for the item's flags. Valid items are + enabled, selectable, and editable. +*/ + +//! [3] +def flags(self, index): + if not index.isValid() + return Qt.ItemIsEnabled + + return QAbstractItemModel.flags(index) | Qt.ItemIsEditable +//! [3] + +/*! + Changes an item in the string list, but only if the following conditions + are met: + + * The index supplied is valid. + * The index corresponds to an item to be shown in a view. + * The role associated with editing text is specified. + + The dataChanged() signal is emitted if the item is changed. +*/ + +//! [4] +def setData(self, index, value, role): + if index.isValid() and role == Qt.EditRole: + self.stringList[index.row()] = value + self.dataChanged.emit(index, index) + return True; +//! [4] //! [5] + return False; +} +//! [5] + +/*! + Inserts a number of rows into the model at the specified position. +*/ + +//! [6] +def insertRows(self, position, rows, parent): + self.beginInsertRows(QModelIndex(), position, position+rows-1) + + for row in range(0, rows): + self.stringList.insert(position, "") + + self.endInsertRows() + return True; +//! [6] //! [7] +//! [7] + +/*! + Removes a number of rows from the model at the specified position. +*/ + +//! [8] +def removeRows(self, position, rows, parent): + self.beginRemoveRows(QModelIndex(), position, position+rows-1) + + for row in range(0, rows): + del self.stringList[position] + + self.endRemoveRows() + return True; +//! [8] //! [9] +//! [9] |