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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc
** All rights reserved.
** For any questions to Digia, please use the contact form at
** http://qt.digia.com/
**
** This file is part of Qt Enterprise Embedded.
**
** Licensees holding valid Qt Enterprise licenses may use this file in
** accordance with the Qt Enterprise License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** the contact form at http://qt.digia.com/
**
****************************************************************************/
#include "disk_page.h"
#include "common.h"
#include "elevator.h"
#include "mainwindow.h" // for Page_ enum
#include <QRadioButton>
#include <QLayout>
#include <QDebug>
#include <QDir>
#include <QListWidget>
#include <QLabel>
#include <QTimer>
#include <QProcess>
#include <QMessageBox>
extern QString G_device;
QLabel *createErrorLabel(QWidget *parent);
DiskPage::DiskPage(QWidget *parent)
: QWizardPage(parent)
, mListWidget(new QListWidget(this))
, mError(createErrorLabel(this))
, mLayout(new QVBoxLayout(this))
{
setTitle(tr("Disk"));
setSubTitle(tr("Select a disk to be used"));
mLayout->addWidget(mListWidget);
mLayout->addSpacerItem(new QSpacerItem(40,40,QSizePolicy::Minimum, QSizePolicy::Expanding));
mLayout->addWidget(mError);
setLayout(mLayout);
connect(mListWidget, &QListWidget::itemClicked, this, &DiskPage::itemSelected);
QTimer *timer = new QTimer(this);
timer->setInterval(1000);
connect(timer, &QTimer::timeout, this, &DiskPage::updateDeviceList);
timer->start();
// Remember devices already present at startup
foreach (const DiskInfo &di, list()) {
if (!di.removable)
mHiddenDevices += di.path;
}
}
DiskPage::~DiskPage()
{
}
QList<DiskPage::DiskInfo> DiskPage::list() const
{
QList<DiskInfo> diList;
QDir sys("/sys/block");
foreach (const QString &i, sys.entryList(QDir::Dirs | QDir::NoDotAndDotDot)) {
DiskInfo di;
if (readAll(sys.absoluteFilePath(i) + "/removable").trimmed() == "1")
di.removable = true;
else
di.removable = false;
di.logicalBlockSize = readAll(sys.absoluteFilePath(i) + "/queue/logical_block_size").trimmed().toULong();
di.blocks = readAll(sys.absoluteFilePath(i) + "/size").trimmed().toULong();
di.name = i;
di.path = "/dev/" + i;
checkForDeviceMounted(di.path, di.mountPoint, di.mountPartition);
diList.append(di);
}
return diList;
}
bool DiskPage::isComplete() const
{
QListWidgetItem *item = mListWidget->currentItem();
if (!item)
return false;
QString path = item->data(Qt::UserRole).toString();
if (path.isEmpty())
return false;
if (!mListItems.contains(path))
return false;
return true;
}
void DiskPage::itemSelected()
{
emit completeChanged();
}
void DiskPage::updateDeviceList()
{
if (wizard()->currentPage() != this)
return;
QList<DiskInfo> diList = list();
QSet<QString> currentDevices;
{ // filter devices by name, size etc.
QMutableListIterator<DiskInfo> iter(diList);
while (iter.hasNext()) {
iter.next();
const DiskInfo &di = iter.value();
if (di.logicalBlockSize == 0 || di.blocks == 0 || di.name.startsWith("ram")
|| di.name.startsWith("sr") || di.name.startsWith("fd") {
iter.remove();
continue;
}
currentDevices += di.path;
}
}
{ // Update hidden devices list if a device was removed
QMutableSetIterator<QString> iter(mHiddenDevices);
while (iter.hasNext()) {
iter.next();
if (!currentDevices.contains(iter.value()))
iter.remove();
}
}
currentDevices.subtract(mHiddenDevices);
// Remove devices from map and UI
QMutableMapIterator<QString, QListWidgetItem*> iter(mListItems);
while (iter.hasNext()) {
iter.next();
if (!currentDevices.contains(iter.key())) {
mDiskInfo.remove(iter.key());
delete iter.value();
iter.remove();
}
}
foreach (const DiskInfo &di, diList) {
if (!currentDevices.contains(di.path))
continue;
QString text = tr("<h3>%1</h3><table style=\"margin-left:10px\"><tr><td>Size</td>"
"<td style=\"padding-left:10\">%2</td></tr><tr><td>Removable</td>"
"<td style=\"padding-left:10\">%3</td><tr><td>Mounted</td>"
"<td style=\"padding-left:10\">%4</td></tr></table>");
double size = di.logicalBlockSize * di.blocks;
QString sizeText;
if (size < 1000) {
sizeText = QString::number(size) + tr(" B");
} else if (size < 1000000) {
sizeText = QString::number(size / 1000) + tr(" KB");
} else if (size < 1000000000) {
sizeText = QString::number(size / 1000000) + tr(" MB");
} else {
sizeText = QString::number(qRound(size / 1000 / 1000 / 1000)) + tr(" GB");
}
text = text.arg(di.name, sizeText, di.removable?tr("yes"):tr("no"), di.mountPoint.isEmpty()?tr("no"):di.mountPoint);
mDiskInfo[di.path] = di;
if (mListItems.contains(di.path)) {
// update existing item
QListWidgetItem *item = mListItems.value(di.path);
QLabel *label = qobject_cast<QLabel*>(mListWidget->itemWidget(item));
label->setText(text);
} else {
// new item
QListWidgetItem *item = new QListWidgetItem();
item->setData(Qt::UserRole, di.path);
QLabel *label = new QLabel;
label->setText(text);
mListWidget->addItem(item);
mListWidget->setItemWidget(item, label);
item->setSizeHint(label->size());
mListItems.insert(di.path, item);
}
}
if (mListWidget->count() == 0)
mError->setText(tr("No suitable disk device found. Connect a device."));
else
mError->setText("");
emit completeChanged();
}
void DiskPage::initializePage()
{
mError->clear();
updateDeviceList();
}
bool DiskPage::validatePage()
{
QListWidgetItem *item = mListWidget->currentItem();
if (!item)
return false;
QString path = item->data(Qt::UserRole).toString();
if (path.isEmpty())
return false;
DiskInfo di = mDiskInfo[path];
if (!di.mountPoint.isEmpty()) {
// Ask the user before unmount
if (QMessageBox::Ok != QMessageBox::warning(this, tr("Unmount action"), tr("The disk you selected is mounted at '%1'. It will be unmounted now.").arg(di.mountPoint), QMessageBox::Ok | QMessageBox::Cancel))
return false;
QStringList args = elevate();
args << "umount" << di.mountPoint;
int rc = QProcess::execute(args.takeFirst(), args);
if (rc != 0) {
QMessageBox::critical(this, tr("Unmount failed"), tr("Could not umount the disk."));
return false;
}
}
G_device = path;
return true;
}
int DiskPage::nextId() const
{
return MainWindow::Page_Commit;
}
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