summaryrefslogtreecommitdiffstats
path: root/src/widgets/doc/snippets/sharedtablemodel/model.cpp
diff options
context:
space:
mode:
authorCasper van Donderen <casper.vandonderen@nokia.com>2012-05-09 12:35:30 +0200
committerMarius Storm-Olsen <marius.storm-olsen@nokia.com>2012-05-09 22:43:31 +0200
commit47799adc0d1bfb9e0e592dbc9af3eb4680e0c81b (patch)
treea2518897dda5c9634ac2d9ff8a667743d08cb179 /src/widgets/doc/snippets/sharedtablemodel/model.cpp
parenta4d07f6c0bc71b3e0abd109325b3be4683e0d243 (diff)
Doc: Move some remaining files over for modularization.
The files in this change were still in qtbase/doc/src or required for it. qtbase/doc/src should now only contain example documentation and images for the example documentation. Change-Id: Ia7ca8e7fd2b316e77c706a08df71303bc8294213 Reviewed-by: Marius Storm-Olsen <marius.storm-olsen@nokia.com>
Diffstat (limited to 'src/widgets/doc/snippets/sharedtablemodel/model.cpp')
-rw-r--r--src/widgets/doc/snippets/sharedtablemodel/model.cpp236
1 files changed, 236 insertions, 0 deletions
diff --git a/src/widgets/doc/snippets/sharedtablemodel/model.cpp b/src/widgets/doc/snippets/sharedtablemodel/model.cpp
new file mode 100644
index 0000000000..ec56f84adb
--- /dev/null
+++ b/src/widgets/doc/snippets/sharedtablemodel/model.cpp
@@ -0,0 +1,236 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Nokia Corporation and its Subsidiary(-ies) 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
+
+ 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;
+}