////  DiskCacheEditor.cpp//////  Created by Clement on 3/4/15.//  Copyright 2015 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html// #include <functional> #include <QDebug>#include <QDialog>#include <QGridLayout>#include <QPushButton>#include <QLabel>#include <QNetworkDiskCache>#include <QMessageBox> #include <NetworkAccessManager.h> #include "DiskCacheEditor.h" DiskCacheEditor::DiskCacheEditor(QWidget* parent) : QObject(parent) {    } QWindow* DiskCacheEditor::windowHandle() {    return (_dialog) ? _dialog->windowHandle() : nullptr;} void DiskCacheEditor::toggle() {    qDebug() << "DiskCacheEditor::toggle()";    if (!_dialog) {        makeDialog();    }        if (!_dialog->isActiveWindow()) {        _dialog->show();        _dialog->raise();        _dialog->activateWindow();    } else {        _dialog->close();    }} void DiskCacheEditor::makeDialog() {    _dialog = new QDialog(static_cast<QWidget*>(parent()));    Q_CHECK_PTR(_dialog);    _dialog->setAttribute(Qt::WA_DeleteOnClose);    _dialog->setWindowTitle("Disk Cache Editor");        QGridLayout* layout = new QGridLayout(_dialog);    Q_CHECK_PTR(layout);    _dialog->setLayout(layout);            QLabel* path = new QLabel("Path : ", _dialog);    Q_CHECK_PTR(path);    path->setAlignment(Qt::AlignRight);    layout->addWidget(path, 0, 0);        QLabel* size = new QLabel("Current Size : ", _dialog);    Q_CHECK_PTR(size);    size->setAlignment(Qt::AlignRight);    layout->addWidget(size, 1, 0);        QLabel* maxSize = new QLabel("Max Size : ", _dialog);    Q_CHECK_PTR(maxSize);    maxSize->setAlignment(Qt::AlignRight);    layout->addWidget(maxSize, 2, 0);            _path = new QLabel(_dialog);    Q_CHECK_PTR(_path);    _path->setAlignment(Qt::AlignLeft);    layout->addWidget(_path, 0, 1, 1, 3);        _size = new QLabel(_dialog);    Q_CHECK_PTR(_size);    _size->setAlignment(Qt::AlignLeft);    layout->addWidget(_size, 1, 1, 1, 3);        _maxSize = new QLabel(_dialog);    Q_CHECK_PTR(_maxSize);    _maxSize->setAlignment(Qt::AlignLeft);    layout->addWidget(_maxSize, 2, 1, 1, 3);        refresh();            QPushButton* refreshCacheButton = new QPushButton(_dialog);    Q_CHECK_PTR(refreshCacheButton);    refreshCacheButton->setText("Refresh");    refreshCacheButton->setToolTip("Reload the cache stats.");    connect(refreshCacheButton, SIGNAL(clicked()), SLOT(refresh()));    layout->addWidget(refreshCacheButton, 3, 2);        QPushButton* clearCacheButton = new QPushButton(_dialog);    Q_CHECK_PTR(clearCacheButton);    clearCacheButton->setText("Clear");    clearCacheButton->setToolTip("Erases the entire content of the disk cache.");    connect(clearCacheButton, SIGNAL(clicked()), SLOT(clear()));    layout->addWidget(clearCacheButton, 3, 3);} void DiskCacheEditor::refresh() {    static const std::function<QString(qint64)> stringify = [](qint64 number) {        static const QStringList UNITS = QStringList() << "B" << "KB" << "MB" << "GB";        static const qint64 CHUNK = 1024;        QString unit;        int i = 0;        for (i = 0; i < 4; ++i) {            if (number / CHUNK > 0) {                number /= CHUNK;            } else {                break;            }        }        return QString("%0 %1").arg(number).arg(UNITS[i]);    };    QNetworkDiskCache* cache = qobject_cast<QNetworkDiskCache*>(NetworkAccessManager::getInstance().cache());        if (_path) {        _path->setText(cache->cacheDirectory());    }    if (_size) {        _size->setText(stringify(cache->cacheSize()));    }    if (_maxSize) {        _maxSize->setText(stringify(cache->maximumCacheSize()));    }} void DiskCacheEditor::clear() {    QMessageBox::StandardButton buttonClicked =                        QMessageBox::question(_dialog, "Clearing disk cache",                                              "You are about to erase all the content of the disk cache,"                                              "are you sure you want to do that?");    if (buttonClicked == QMessageBox::Yes) {        QNetworkDiskCache* cache = qobject_cast<QNetworkDiskCache*>(NetworkAccessManager::getInstance().cache());        if (cache) {            qDebug() << "DiskCacheEditor::clear(): Clearing disk cache.";            cache->clear();        }    }    refresh();}