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Diffstat (limited to 'doc/codesnippets/doc/src/snippets/sharedtablemodel/model.cpp')
-rw-r--r-- | doc/codesnippets/doc/src/snippets/sharedtablemodel/model.cpp | 237 |
1 files changed, 0 insertions, 237 deletions
diff --git a/doc/codesnippets/doc/src/snippets/sharedtablemodel/model.cpp b/doc/codesnippets/doc/src/snippets/sharedtablemodel/model.cpp deleted file mode 100644 index 0fe0249f6..000000000 --- a/doc/codesnippets/doc/src/snippets/sharedtablemodel/model.cpp +++ /dev/null @@ -1,237 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial Usage -** Licensees holding valid Qt Commercial licenses may use this file in -** accordance with the Qt Commercial License Agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and Nokia. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain -** additional rights. These rights are described in the Nokia Qt LGPL -** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this -** package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 3.0 as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU General Public License version 3.0 requirements will be -** met: http://www.gnu.org/copyleft/gpl.html. -** -** If you are unsure which license is appropriate for your use, please -** contact the sales department at http://www.qtsoftware.com/contact. -** $QT_END_LICENSE$ -** -****************************************************************************/ - -/* - model.cpp - - Provides a table model for use in various examples. -*/ - -#include <QtGui> - -#include "model.h" - -/*! - Constructs a table model with at least one row and one column. -*/ - -TableModel::TableModel(int rows, int columns, QObject *parent) - : QAbstractTableModel(parent) -{ - QStringList newList; - - for (int column = 0; column < qMax(1, columns); ++column) { - newList.append(""); - } - - for (int row = 0; row < qMax(1, rows); ++row) { - rowList.append(newList); - } -} - - -/*! - Returns the number of items in the row list as the number of rows - in the model. -*/ - -int TableModel::rowCount(const QModelIndex &/*parent*/) const -{ - return rowList.size(); -} - -/*! - Returns the number of items in the first list item as the number of - columns in the model. All rows should have the same number of columns. -*/ - -int TableModel::columnCount(const QModelIndex &/*parent*/) const -{ - return rowList[0].size(); -} - -/*! - 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 for the display role; otherwise an invalid variant - is returned. -*/ - -QVariant TableModel::data(const QModelIndex &index, int role) const -{ - if (!index.isValid()) - return QVariant(); - - if (role == Qt::DisplayRole) - return rowList[index.row()][index.column()]; - else - return QVariant(); -} - -/*! - 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. -*/ - -QVariant TableModel::headerData(int section, Qt::Orientation orientation, - int role) const -{ - if (role != Qt::DisplayRole) - return QVariant(); - - if (orientation == Qt::Horizontal) - return QString("Column %1").arg(section); - else - return QString("Row %1").arg(section); -} - -/*! - Returns an appropriate value for the item's flags. Valid items are - enabled, selectable, and editable. -*/ - -Qt::ItemFlags TableModel::flags(const QModelIndex &index) const -{ - if (!index.isValid()) - return Qt::ItemIsEnabled; - - return Qt::ItemIsEnabled | Qt::ItemIsSelectable | Qt::ItemIsEditable; -} - -/*! - Changes an item in the model, but only if the following conditions - are met: - - * The index supplied is valid. - * The role associated with editing text is specified. - - The dataChanged() signal is emitted if the item is changed. -*/ - -bool TableModel::setData(const QModelIndex &index, - const QVariant &value, int role) -{ - if (!index.isValid() || role != Qt::EditRole) - return false; - - rowList[index.row()][index.column()] = value.toString(); - emit dataChanged(index, index); - return true; -} - -/*! - Inserts a number of rows into the model at the specified position. -*/ - -bool TableModel::insertRows(int position, int rows, const QModelIndex &parent) -{ - int columns = columnCount(); - beginInsertRows(parent, position, position + rows - 1); - - for (int row = 0; row < rows; ++row) { - QStringList items; - for (int column = 0; column < columns; ++column) - items.append(""); - rowList.insert(position, items); - } - - endInsertRows(); - return true; -} - -/*! - Inserts a number of columns into the model at the specified position. - Each entry in the list is extended in turn with the required number of - empty strings. -*/ - -bool TableModel::insertColumns(int position, int columns, const QModelIndex &parent) -{ - int rows = rowCount(); - beginInsertColumns(parent, position, position + columns - 1); - - for (int row = 0; row < rows; ++row) { - for (int column = position; column < columns; ++column) { - rowList[row].insert(position, ""); - } - } - - endInsertColumns(); - return true; -} - -/*! - Removes a number of rows from the model at the specified position. -*/ - -bool TableModel::removeRows(int position, int rows, const QModelIndex &parent) -{ - beginRemoveRows(parent, position, position + rows - 1); - - for (int row = 0; row < rows; ++row) { - rowList.removeAt(position); - } - - endRemoveRows(); - return true; -} - -/*! - Removes a number of columns from the model at the specified position. - Each row is shortened by the number of columns specified. -*/ - -bool TableModel::removeColumns(int position, int columns, const QModelIndex &parent) -{ - int rows = rowCount(); - beginRemoveColumns(parent, position, position + columns - 1); - - for (int row = 0; row < rows; ++row) { - for (int column = 0; column < columns; ++column) { - rowList[row].removeAt(position); - } - } - - endRemoveColumns(); - return true; -} |