wadseekerwadstable.cpp

//------------------------------------------------------------------------------
// wadseekerwadstable.cpp
//------------------------------------------------------------------------------
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
// 02110-1301  USA
//
//------------------------------------------------------------------------------
// Copyright (C) 2011 "Zalewa" <zalewapl@gmail.com>
//------------------------------------------------------------------------------
#include "wadseekerwadstable.h"

#include "speedcalculator.h"
#include "strings.hpp"

#include <QDebug>
#include <QHeaderView>
#include <QProgressBar>
#include <QUrl>

WadseekerWadsTable::WadseekerWadsTable(QWidget* pParent)
: TableWidgetMouseAware(pParent)
{
        d.bAlreadyShownOnce = false;
        d.updateClock.start();
}

WadseekerWadsTable::~WadseekerWadsTable()
{
        QMap<QString, SpeedCalculator* >::iterator it;
        for (it = d.speedCalculators.begin(); it != d.speedCalculators.end(); ++it)
        {
                delete it.value();
        }
}

void WadseekerWadsTable::addFile(const QString& filename)
{
        // Add new row to table, but only if file is not yet added.
        if (findFileRow(filename) < 0)
        {
                insertRow(rowCount());
                int rowIndex = rowCount() - 1;

                // Create the row contents.
                setSortingEnabled(false);

                QProgressBar* pBar = new QProgressBar();
                pBar->setAlignment(Qt::AlignCenter);

                setItem(rowIndex, IDX_NAME_COLUMN, new QTableWidgetItem(filename));
                setItem(rowIndex, IDX_URL_COLUMN, new QTableWidgetItem());
                setCellWidget(rowIndex, IDX_PROGRESS_COLUMN, pBar);
                setItem(rowIndex, IDX_SPEED_COLUMN, new QTableWidgetItem());
                setItem(rowIndex, IDX_ETA_COLUMN, new QTableWidgetItem(tr("N/A")));
                setItem(rowIndex, IDX_SIZE_COLUMN, new QTableWidgetItem(tr("N/A")));

                SpeedCalculator* pCalculator = new SpeedCalculator();
                pCalculator->start();

                d.speedCalculators.insert(filename, pCalculator);

                setSortingEnabled(true);
        }
}

WadseekerWadsTable::ContextMenu* WadseekerWadsTable::contextMenu(const QModelIndex& index, const QPoint& cursorPosition)
{
        WadseekerWadsTable::ContextMenu* menu = new ContextMenu(this);
        QPoint displayPoint = this->viewport()->mapToGlobal(cursorPosition);
        menu->move(displayPoint);

        if (!index.isValid())
        {
                menu->actionSkipCurrentSite->setEnabled(false);
        }

        return menu;
}

qint64 WadseekerWadsTable::expectedDataSize(int row) const
{
        if (row < 0 || row >= this->rowCount())
        {
                return -1;
        }

        QString fileName = fileNameAtRow(row);
        return d.speedCalculators[fileName]->expectedDataSize();
}

QString WadseekerWadsTable::fileNameAtRow(int row) const
{
        if (row < 0 || row >= this->rowCount())
        {
                return QString();
        }

        return item(row, IDX_NAME_COLUMN)->text();
}

int WadseekerWadsTable::findFileRow(const QString& filename)
{
        QList<QTableWidgetItem *> list = findItems(filename, Qt::MatchFixedString);
        if (!list.isEmpty())
        {
                return list.first()->row();
        }

        return -1;
}

void WadseekerWadsTable::setFileDownloadFinished(const QString& filename)
{
        int row = findFileRow(filename);

        if (row >= 0)
        {
                // Update ETA
                // ETA will be changed to DONE if wad is installed successfully.
                item(row, IDX_ETA_COLUMN)->setText(tr("N/A"));
                item(row, IDX_SPEED_COLUMN)->setText(tr("N/A"));

                item(row, IDX_URL_COLUMN)->setText(tr("Awaiting URLs"));
                item(row, IDX_URL_COLUMN)->setToolTip(tr("Awaiting URLs"));

                const bool FORCE = true;
                updateDataInfoValues(FORCE);
        }
}

void WadseekerWadsTable::setFileFailed(const QString& filename)
{
        int row = findFileRow(filename);

        if (row >= 0)
        {
                item(row, IDX_NAME_COLUMN)->setIcon(QIcon(":/icons/x.png"));

                item(row, IDX_URL_COLUMN)->setText("");
        }
}

void WadseekerWadsTable::setFileProgress(const QString& filename, qint64 current, qint64 total)
{
        int row = findFileRow(filename);

        if (row >= 0)
        {
                QProgressBar* pBar = (QProgressBar*) this->cellWidget(row, IDX_PROGRESS_COLUMN);
                pBar->setMaximum(total);
                pBar->setValue(current);

                // Update ETA and speed
                SpeedCalculator* pCalculator = d.speedCalculators.value(filename);
                pCalculator->setExpectedDataSize(total);
                pCalculator->registerDataAmount(current);

                const bool FORCE = true;
                updateDataInfoValues(!FORCE);
        }
}

void WadseekerWadsTable::setFileSuccessful(const QString& filename)
{
        int row = findFileRow(filename);

        if (row >= 0)
        {
                // Set progress bar to 100%.
                QProgressBar* pBar = (QProgressBar*) this->cellWidget(row, IDX_PROGRESS_COLUMN);
                SpeedCalculator* pCalculator = d.speedCalculators[filename];
                if (pCalculator->expectedDataSize() == 0)
                {
                        pCalculator->setExpectedDataSize(1);
                }

                pCalculator->registerDataAmount(pCalculator->expectedDataSize());

                pBar->setMaximum(pCalculator->expectedDataSize());
                pBar->setValue(pCalculator->expectedDataSize());

                item(row, IDX_NAME_COLUMN)->setIcon(QIcon(":/icons/ok.png"));
                item(row, IDX_URL_COLUMN)->setText("");

                item(row, IDX_ETA_COLUMN)->setText(tr("Done"));
                item(row, IDX_SPEED_COLUMN)->setText("");

                const bool FORCE = true;
                updateDataInfoValues(FORCE);
        }
}

void WadseekerWadsTable::setFileUrl(const QString& filename, const QUrl& url)
{
        // At this point we know that a new download has sstarted.
        // We should reset certain values.
        int row = findFileRow(filename);

        if (row >= 0)
        {
                QTableWidgetItem* pItem = this->item(row, IDX_URL_COLUMN);
                pItem->setText(url.toString());
                pItem->setToolTip(url.toString());

                QProgressBar* pBar = (QProgressBar*) this->cellWidget(row, IDX_PROGRESS_COLUMN);
                pBar->setMaximum(0);
                pBar->setValue(0);

                SpeedCalculator* pCalculator = d.speedCalculators[filename];
                pCalculator->start();
        }
}

void WadseekerWadsTable::showEvent(QShowEvent* pEvent)
{
        if (!d.bAlreadyShownOnce)
        {
                // Events in this block must occur after the widget has been
                // constructed, but only once.
                QHeaderView* pHeader = horizontalHeader();

                // Setup resizing
#if QT_VERSION >= 0x050000
                pHeader->setSectionResizeMode(IDX_URL_COLUMN, QHeaderView::Stretch);
#else
                pHeader->setResizeMode(IDX_URL_COLUMN, QHeaderView::Stretch);
#endif

                pHeader->resizeSection(IDX_NAME_COLUMN, 140);
                pHeader->resizeSection(IDX_PROGRESS_COLUMN, 85);
                pHeader->resizeSection(IDX_ETA_COLUMN, 85);
                pHeader->resizeSection(IDX_SIZE_COLUMN, 150);
                pHeader->resizeSection(IDX_SPEED_COLUMN, 85);

        }
}

double WadseekerWadsTable::totalDonePercentage() const
{
        double sumDownloadPercentages = 0.0;

        if (this->rowCount() == 0)
        {
                return -1.0;
        }

        for (int i = 0; i < this->rowCount(); ++i)
        {
                const QProgressBar* pBar = (const QProgressBar*) this->cellWidget(i, IDX_PROGRESS_COLUMN);
                if (pBar != NULL)
                {
                        int val = pBar->value();
                        int max = pBar->maximum();

                        if (max > 0)
                        {
                                double curPercentage =  (double) val / (double) max;
                                sumDownloadPercentages += curPercentage;
                        }
                }
        }

        // We need to multiply the value by 100 to get actual percents.
        sumDownloadPercentages *= 100.0;
        double averageDownloadPercentages = sumDownloadPercentages / (double) this->rowCount();

        return averageDownloadPercentages;
}

void WadseekerWadsTable::updateDataInfoValues(bool bForce)
{
        // Make sure updates are not performed before certain interval passes.
        if (d.updateClock.elapsed() > UPDATE_INTERVAL_MS || bForce)
        {
                d.updateClock.start();

                for (int i = 0; i < this->rowCount(); ++i)
                {
                        // Find the calculator for specified row.
                        QString filename = this->item(i, IDX_NAME_COLUMN)->text();
                        SpeedCalculator* pCalculator = d.speedCalculators.value(filename);

                        // Update data amount.
                        QString strCurrent = Strings::formatDataAmount(pCalculator->lastRegisterAttemptedDataAmount());
                        QString strTotal = Strings::formatDataAmount(pCalculator->expectedDataSize());

                        QString size = QString("%1 / %2").arg(strCurrent, strTotal);
                        item(i, IDX_SIZE_COLUMN)->setText(size);

                        // Update ETA and speed.
                        if (pCalculator->expectedDataSize() != pCalculator->lastRegisterAttemptedDataAmount())
                        {
                                // If both above values are equal it means we have either
                                // finished the download or didn't start it yet. In either case
                                // we shouldn't change the speed and ETA displays.
                                long double ldEta = pCalculator->estimatedTimeUntilArrival();
                                long double ldSpeed = pCalculator->getSpeed();

                                if (ldEta >= 0.0)
                                {
                                        QString strEta = Strings::formatTime(pCalculator->estimatedTimeUntilArrival());
                                        item(i, IDX_ETA_COLUMN)->setText(strEta);
                                }
                                else
                                {
                                        item(i, IDX_ETA_COLUMN)->setText(tr("N/A"));
                                }

                                if (ldSpeed >= 0.0)
                                {
                                        QString strSpeed = Strings::formatDataSpeed(pCalculator->getSpeed());
                                        item(i, IDX_SPEED_COLUMN)->setText(strSpeed);
                                }
                                else
                                {
                                        item(i, IDX_SPEED_COLUMN)->setText(tr("N/A"));
                                }
                        }
                }
        }
}
WadseekerWadsTable::ContextMenu::ContextMenu(QWidget* pParent)
: QMenu(pParent)
{
        this->actionSkipCurrentSite = new QAction(tr("Skip current URL"), this);

        this->addAction(this->actionSkipCurrentSite);
}