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#include "logviewform.h"
#include <QScrollBar>
#include <QTimer>
#include "audits/memman.h"
#include "log.h"
/*
* Constructs a LogViewForm which is a child of 'parent', with the
* name 'name' and widget flags set to 'f'
*
* The dialog will by default be modeless, unless you set 'modal' to
* true to construct a modal dialog.
*/
LogViewForm::LogViewForm(QWidget* parent)
: QDialog(parent)
{
setupUi(this);
}
/*
* Destroys the object and frees any allocated resources
*/
LogViewForm::~LogViewForm()
{
// no need to delete child widgets, Qt does it all for us
}
bool LogViewForm::isOnBottom() const
{
const QScrollBar* vsb = logTextEdit->verticalScrollBar();
return (vsb->value() == vsb->maximum());
}
void LogViewForm::scrollToBottom()
{
QScrollBar* vsb = logTextEdit->verticalScrollBar();
vsb->setValue(vsb->maximum());
logTextEdit->update();
}
void LogViewForm::show()
{
if (isVisible()) {
raise();
return;
}
QString fname = log_file->get_filename().c_str();
logfile = new QFile(fname);
MEMMAN_NEW(logfile);
logstream = NULL;
if (logfile->open(QIODevice::ReadOnly)) {
logstream = new QTextStream(logfile);
MEMMAN_NEW(logstream);
logTextEdit->setPlainText(logstream->readAll());
}
log_file->enable_inform_user(true);
QDialog::show();
// Couldn't get it to scroll AND show contents(!) without this hack
QTimer::singleShot(50, this, SLOT(scrollToBottom()));
raise();
}
void LogViewForm::closeEvent(QCloseEvent* ev)
{
log_file->enable_inform_user(false);
// logTextEdit->clear(); // causes crashes with Qt5
if (logstream) {
MEMMAN_DELETE(logstream);
delete logstream;
logstream = NULL;
}
logfile->close();
MEMMAN_DELETE(logfile);
delete logfile;
logfile = NULL;
QDialog::closeEvent(ev);
}
void LogViewForm::update(bool log_zapped)
{
if (!isVisible()) return;
if (log_zapped) {
close();
show();
return;
}
if (logstream) {
QString s = logstream->readAll();
if (!s.isNull() && !s.isEmpty()) {
bool bottom = isOnBottom();
logTextEdit->appendPlainText(s);
if (bottom)
scrollToBottom();
}
}
}
void LogViewForm::clear()
{
logTextEdit->clear();
}
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