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-/****************************************************************************
-**
-** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: http://www.qt-project.org/
-**
-** This file is part of the examples 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."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-#include "model.h"
-
-#include <QtCore/QUrl>
-#include <QtCore/QDate>
-#include <QtCore/QList>
-#include <QtCore/QStringList>
-#include <QtCore/QDebug>
-
-#include <QtNetwork/QNetworkAccessManager>
-#include <QtNetwork/QNetworkReply>
-
-StockModel::StockModel(QObject *parent)
- : QAbstractListModel(parent)
- , _startDate(QDate(1995, 4, 25))
- , _endDate(QDate::currentDate())
- , _dataCycle(StockModel::Daily)
- , _manager(0)
- , _updating(false)
-{
- QHash<int, QByteArray> roles;
- roles[StockModel::DateRole] = "date";
- roles[StockModel::SectionRole] = "year";
- roles[StockModel::OpenPriceRole] = "openPrice";
- roles[StockModel::ClosePriceRole] = "closePrice";
- roles[StockModel::HighPriceRole] = "highPrice";
- roles[StockModel::LowPriceRole] = "lowPrice";
- roles[StockModel::VolumeRole] = "volume";
- roles[StockModel::AdjustedPriceRole] = "adjustedPrice";
- setRoleNames(roles);
-
- connect(this, SIGNAL(stockNameChanged()), SLOT(requestData()));
- connect(this, SIGNAL(startDateChanged()), SLOT(requestData()));
- connect(this, SIGNAL(endDateChanged()), SLOT(requestData()));
- connect(this, SIGNAL(dataCycleChanged()), SLOT(requestData()));
-
- _manager = new QNetworkAccessManager(this);
- connect(_manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(update(QNetworkReply*)));
-
-}
-
-int StockModel::rowCount(const QModelIndex & parent) const {
- Q_UNUSED(parent);
- return _prices.count();
-}
-
-StockPrice* StockModel::stockPriceAtIndex(int idx) const
-{
- if (idx >=0 && idx < _prices.size()) {
- return _prices[idx];
- }
- return 0;
-}
-
-
-void StockModel::requestData()
-{
- if (!_updating) {
- _updating = true;
- QMetaObject::invokeMethod(this, "doRequest", Qt::QueuedConnection);
- }
-}
-
-void StockModel::doRequest()
-{
- /*
- Fetch stock data from yahoo finance:
- url: http://ichart.finance.yahoo.com/table.csv?s=NOK&a=5&b=11&c=2010&d=7&e=23&f=2010&g=d&ignore=.csv
- s:stock name/id, a:start day, b:start month, c:start year default: 25 April 1995, oldest c= 1962
- d:end day, e:end month, f:end year, default:today (data only available 3 days before today)
- g:data cycle(d daily, w weekly, m monthly, v Dividend)
- */
- if (_manager && !_stockName.isEmpty() && _endDate > _startDate) {
- QString query("http://ichart.finance.yahoo.com/table.csv?s=%1&a=%2&b=%3&c=%4&d=%5&e=%6&f=%7&g=%8&ignore=.csv");
- query = query.arg(_stockName)
- .arg(_startDate.day()).arg(_startDate.month()).arg(_startDate.year())
- .arg(_endDate.day()).arg(_endDate.month()).arg(_endDate.year())
- .arg(dataCycleString());
-
- qDebug() << "request stock data:" << query;
- QNetworkReply* reply = _manager->get(QNetworkRequest(QUrl(query)));
- connect(reply, SIGNAL(downloadProgress(qint64,qint64)), SIGNAL(downloadProgress(qint64,qint64)));
- }
-}
-
-void StockModel::update(QNetworkReply *reply)
-{
- _updating = false;
-
- if (reply) {
- if (reply->error() == QNetworkReply::NoError) {
- beginResetModel();
-
- foreach (StockPrice* p, _prices) {
- p->deleteLater();
- }
-
- _prices.clear();
-
- while (!reply->atEnd()) {
- QString line = reply->readLine();
- QStringList fields = line.split(',');
-
- //data format:Date,Open,High,Low,Close,Volume,Adjusted close price
- //example: 2011-06-24,6.03,6.04,5.88,5.88,20465200,5.88
- if (fields.size() == 7) {
- StockPrice* price = new StockPrice(this);
- price->setDate(QDate::fromString(fields[0], Qt::ISODate));
- price->setOpenPrice(fields[1].toFloat());
- price->setHighPrice(fields[2].toFloat());
- price->setLowPrice(fields[3].toFloat());
- price->setClosePrice(fields[4].toFloat());
- price->setVolume(fields[5].toInt());
- price->setAdjustedPrice(fields[6].toFloat());
- _prices.prepend(price);
- }
- }
- qDebug() << "get stock data successfully, total:" << _prices.count() << "records.";
- } else {
- qDebug() << "get stock data failed:" << reply->errorString();
- }
- reply->deleteLater();
- endResetModel();
- emit dataChanged(QModelIndex(), QModelIndex());
- }
-}
-
-QVariant StockModel::data(const QModelIndex & index, int role) const {
- if (index.row() < 0 || index.row() > _prices.count())
- return QVariant();
-
- const StockPrice* price = _prices[index.row()];
- if (role == StockModel::DateRole)
- return price->date();
- else if (role == StockModel::OpenPriceRole)
- return price->openPrice();
- else if (role == StockModel::ClosePriceRole)
- return price->closePrice();
- else if (role == StockModel::HighPriceRole)
- return price->highPrice();
- else if (role == StockModel::LowPriceRole)
- return price->lowPrice();
- else if (role == StockModel::AdjustedPriceRole)
- return price->adjustedPrice();
- else if (role == StockModel::VolumeRole)
- return price->volume();
- else if (role == StockModel::SectionRole)
- return price->date().year();
- return QVariant();
-}
-
-QString StockModel::stockName() const
-{
- return _stockName;
-}
-void StockModel::setStockName(const QString& name)
-{
- if (_stockName != name) {
- _stockName = name;
- emit stockNameChanged();
- }
-}
-
-QDate StockModel::startDate() const
-{
- return _startDate;
-}
-void StockModel::setStartDate(const QDate& date)
-{
- if (_startDate.isValid() && _startDate != date) {
- _startDate = date;
- emit startDateChanged();
- }
-}
-
-QDate StockModel::endDate() const
-{
- return _endDate;
-}
-void StockModel::setEndDate(const QDate& date)
-{
- if (_endDate.isValid() && _endDate != date) {
- _endDate = date;
- emit endDateChanged();
- }
-}
-
-StockModel::StockDataCycle StockModel::dataCycle() const
-{
- return _dataCycle;
-}
-
-QString StockModel::dataCycleString() const
-{
- switch (_dataCycle) {
- case StockModel::Daily:
- return QString('d');
- break;
- case StockModel::Weekly:
- return QString('w');
- case StockModel::Monthly:
- return QString('m');
- case StockModel::Dividend:
- return QString('v');
- }
-
- return QString('d');
-}
-
-
-void StockModel::setDataCycle(StockModel::StockDataCycle cycle)
-{
- if (_dataCycle != cycle) {
- _dataCycle = cycle;
- emit dataCycleChanged();
- }
-}
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