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path: root/application/widgets/JavaSettingsWidget.cpp
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#include "JavaSettingsWidget.h"
#include <MultiMC.h>

#include <java/JavaInstall.h>
#include <dialogs/CustomMessageBox.h>
#include <java/JavaUtils.h>
#include <sys.h>

#include <QVBoxLayout>
#include <QGroupBox>
#include <QSpinBox>
#include <QLabel>
#include <QLineEdit>
#include <QPushButton>
#include <QToolButton>
#include <widgets/VersionSelectWidget.h>
#include <FileSystem.h>
#include <QFileDialog>

JavaSettingsWidget::JavaSettingsWidget(QWidget* parent) : QWidget(parent)
{
	m_availableMemory = Sys::getSystemRam() / Sys::megabyte;

	goodIcon = MMC->getThemedIcon("status-good");
	yellowIcon = MMC->getThemedIcon("status-yellow");
	badIcon = MMC->getThemedIcon("status-bad");
	setupUi();

	connect(m_minMemSpinBox, SIGNAL(valueChanged(int)), this, SLOT(memoryValueChanged(int)));
	connect(m_maxMemSpinBox, SIGNAL(valueChanged(int)), this, SLOT(memoryValueChanged(int)));
	connect(m_permGenSpinBox, SIGNAL(valueChanged(int)), this, SLOT(memoryValueChanged(int)));
	connect(m_versionWidget, &VersionSelectWidget::selectedVersionChanged, this, &JavaSettingsWidget::javaVersionSelected);
	connect(m_javaBrowseBtn, &QPushButton::clicked, this, &JavaSettingsWidget::on_javaBrowseBtn_clicked);
	connect(m_javaPathTextBox, &QLineEdit::textEdited, this, &JavaSettingsWidget::javaPathEdited);
	connect(m_javaStatusBtn, &QToolButton::clicked, this, &JavaSettingsWidget::on_javaStatusBtn_clicked);
}

void JavaSettingsWidget::setupUi()
{
	setObjectName(QStringLiteral("javaSettingsWidget"));
	m_verticalLayout = new QVBoxLayout(this);
	m_verticalLayout->setObjectName(QStringLiteral("verticalLayout"));

	m_versionWidget = new VersionSelectWidget(MMC->javalist().get(), this);
	m_versionWidget->setResizeOn(2);
	m_verticalLayout->addWidget(m_versionWidget);

	m_horizontalLayout = new QHBoxLayout();
	m_horizontalLayout->setObjectName(QStringLiteral("horizontalLayout"));
	m_javaPathTextBox = new QLineEdit(this);
	m_javaPathTextBox->setObjectName(QStringLiteral("javaPathTextBox"));

	m_horizontalLayout->addWidget(m_javaPathTextBox);

	m_javaBrowseBtn = new QPushButton(this);
	m_javaBrowseBtn->setObjectName(QStringLiteral("javaBrowseBtn"));

	m_horizontalLayout->addWidget(m_javaBrowseBtn);

	m_javaStatusBtn = new QToolButton(this);
	m_javaStatusBtn->setIcon(yellowIcon);
	m_horizontalLayout->addWidget(m_javaStatusBtn);

	m_verticalLayout->addLayout(m_horizontalLayout);

	m_memoryGroupBox = new QGroupBox(this);
	m_memoryGroupBox->setObjectName(QStringLiteral("memoryGroupBox"));
	m_gridLayout_2 = new QGridLayout(m_memoryGroupBox);
	m_gridLayout_2->setObjectName(QStringLiteral("gridLayout_2"));

	m_labelMinMem = new QLabel(m_memoryGroupBox);
	m_labelMinMem->setObjectName(QStringLiteral("labelMinMem"));
	m_gridLayout_2->addWidget(m_labelMinMem, 0, 0, 1, 1);

	m_minMemSpinBox = new QSpinBox(m_memoryGroupBox);
	m_minMemSpinBox->setObjectName(QStringLiteral("minMemSpinBox"));
	m_minMemSpinBox->setSuffix(QStringLiteral(" MB"));
	m_minMemSpinBox->setMinimum(128);
	m_minMemSpinBox->setMaximum(m_availableMemory);
	m_minMemSpinBox->setSingleStep(128);
	m_labelMinMem->setBuddy(m_minMemSpinBox);
	m_gridLayout_2->addWidget(m_minMemSpinBox, 0, 1, 1, 1);

	m_labelMaxMem = new QLabel(m_memoryGroupBox);
	m_labelMaxMem->setObjectName(QStringLiteral("labelMaxMem"));
	m_gridLayout_2->addWidget(m_labelMaxMem, 1, 0, 1, 1);

	m_maxMemSpinBox = new QSpinBox(m_memoryGroupBox);
	m_maxMemSpinBox->setObjectName(QStringLiteral("maxMemSpinBox"));
	m_maxMemSpinBox->setSuffix(QStringLiteral(" MB"));
	m_maxMemSpinBox->setMinimum(128);
	m_maxMemSpinBox->setMaximum(m_availableMemory);
	m_maxMemSpinBox->setSingleStep(128);
	m_labelMaxMem->setBuddy(m_maxMemSpinBox);
	m_gridLayout_2->addWidget(m_maxMemSpinBox, 1, 1, 1, 1);

	m_labelPermGen = new QLabel(m_memoryGroupBox);
	m_labelPermGen->setObjectName(QStringLiteral("labelPermGen"));
	m_labelPermGen->setText(QStringLiteral("PermGen:"));
	m_gridLayout_2->addWidget(m_labelPermGen, 2, 0, 1, 1);
	m_labelPermGen->setVisible(false);

	m_permGenSpinBox = new QSpinBox(m_memoryGroupBox);
	m_permGenSpinBox->setObjectName(QStringLiteral("permGenSpinBox"));
	m_permGenSpinBox->setSuffix(QStringLiteral(" MB"));
	m_permGenSpinBox->setMinimum(64);
	m_permGenSpinBox->setMaximum(m_availableMemory);
	m_permGenSpinBox->setSingleStep(8);
	m_gridLayout_2->addWidget(m_permGenSpinBox, 2, 1, 1, 1);
	m_permGenSpinBox->setVisible(false);

	m_verticalLayout->addWidget(m_memoryGroupBox);

	retranslate();
}

void JavaSettingsWidget::initialize()
{
	m_versionWidget->initialize();
	auto s = MMC->settings();
	// Memory
	observedMinMemory = s->get("MinMemAlloc").toInt();
	observedMaxMemory = s->get("MaxMemAlloc").toInt();
	observedPermGenMemory = s->get("PermGen").toInt();
	m_minMemSpinBox->setValue(observedMinMemory);
	m_maxMemSpinBox->setValue(observedMaxMemory);
	m_permGenSpinBox->setValue(observedPermGenMemory);
}

void JavaSettingsWidget::refresh()
{
	m_versionWidget->loadList();
}

JavaSettingsWidget::ValidationStatus JavaSettingsWidget::validate()
{
	switch(javaStatus)
	{
		default:
		case JavaStatus::NotSet:
		case JavaStatus::DoesNotExist:
		case JavaStatus::DoesNotStart:
		case JavaStatus::ReturnedInvalidData:
		{
			int button = CustomMessageBox::selectable(
				this,
				tr("No Java version selected"),
				tr("You didn't select a Java version or selected something that doesn't work.\n"
					"MultiMC will not be able to start Minecraft.\n"
					"Do you wish to proceed without any Java?"
					"\n\n"
					"You can change the Java version in the settings later.\n"
				),
				QMessageBox::Warning,
				QMessageBox::Yes | QMessageBox::No,
				QMessageBox::NoButton
			)->exec();
			if(button == QMessageBox::No)
			{
				return ValidationStatus::Bad;
			}
			return ValidationStatus::JavaBad;
		}
		break;
		case JavaStatus::Pending:
		{
			return ValidationStatus::Bad;
		}
		case JavaStatus::Good:
		{
			return ValidationStatus::AllOK;
		}
	}
}

QString JavaSettingsWidget::javaPath() const
{
	return m_javaPathTextBox->text();
}

int JavaSettingsWidget::maxHeapSize() const
{
	return m_maxMemSpinBox->value();
}

int JavaSettingsWidget::minHeapSize() const
{
	return m_minMemSpinBox->value();
}

bool JavaSettingsWidget::permGenEnabled() const
{
	return m_permGenSpinBox->isVisible();
}

int JavaSettingsWidget::permGenSize() const
{
	return m_permGenSpinBox->value();
}

void JavaSettingsWidget::memoryValueChanged(int)
{
	bool actuallyChanged = false;
	int min = m_minMemSpinBox->value();
	int max = m_maxMemSpinBox->value();
	int permgen = m_permGenSpinBox->value();
	QObject *obj = sender();
	if (obj == m_minMemSpinBox && min != observedMinMemory)
	{
		observedMinMemory = min;
		actuallyChanged = true;
		if (min > max)
		{
			observedMaxMemory = min;
			m_maxMemSpinBox->setValue(min);
		}
	}
	else if (obj == m_maxMemSpinBox && max != observedMaxMemory)
	{
		observedMaxMemory = max;
		actuallyChanged = true;
		if (min > max)
		{
			observedMinMemory = max;
			m_minMemSpinBox->setValue(max);
		}
	}
	else if (obj == m_permGenSpinBox && permgen != observedPermGenMemory)
	{
		observedPermGenMemory = permgen;
		actuallyChanged = true;
	}
	if(actuallyChanged)
	{
		checkJavaPathOnEdit(m_javaPathTextBox->text());
	}
}

void JavaSettingsWidget::javaVersionSelected(BaseVersionPtr version)
{
	auto java = std::dynamic_pointer_cast<JavaInstall>(version);
	if(!java)
	{
		return;
	}
	auto visible = java->id.requiresPermGen();
	m_labelPermGen->setVisible(visible);
	m_permGenSpinBox->setVisible(visible);
	m_javaPathTextBox->setText(java->path);
	checkJavaPath(java->path);
}

void JavaSettingsWidget::on_javaBrowseBtn_clicked()
{
	QString filter;
#if defined Q_OS_WIN32
	filter = "Java (javaw.exe)";
#else
	filter = "Java (java)";
#endif
	QString raw_path = QFileDialog::getOpenFileName(this, tr("Find Java executable"), QString(), filter);
	if(raw_path.isEmpty())
	{
		return;
	}
	QString cooked_path = FS::NormalizePath(raw_path);
	m_javaPathTextBox->setText(cooked_path);
	checkJavaPath(cooked_path);
}

void JavaSettingsWidget::on_javaStatusBtn_clicked()
{
	QString text;
	bool failed = false;
	switch(javaStatus)
	{
		case JavaStatus::NotSet:
			checkJavaPath(m_javaPathTextBox->text());
			return;
		case JavaStatus::DoesNotExist:
			text += QObject::tr("The specified file either doesn't exist or is not a proper executable.");
			failed = true;
			break;
		case JavaStatus::DoesNotStart:
		{
			text += QObject::tr("The specified java binary didn't start properly.<br />");
			auto htmlError = m_result.errorLog;
			if(!htmlError.isEmpty())
			{
				htmlError.replace('\n', "<br />");
				text += QString("<font color=\"red\">%1</font>").arg(htmlError);
			}
			failed = true;
			break;
		}
		case JavaStatus::ReturnedInvalidData:
		{
			text += QObject::tr("The specified java binary returned unexpected results:<br />");
			auto htmlOut = m_result.outLog;
			if(!htmlOut.isEmpty())
			{
				htmlOut.replace('\n', "<br />");
				text += QString("<font color=\"red\">%1</font>").arg(htmlOut);
			}
			failed = true;
			break;
		}
		case JavaStatus::Good:
			text += QObject::tr("Java test succeeded!<br />Platform reported: %1<br />Java version "
				"reported: %2<br />").arg(m_result.realPlatform, m_result.javaVersion.toString());
			break;
		case JavaStatus::Pending:
			// TODO: abort here?
			return;
	}
	CustomMessageBox::selectable(
		this,
		failed ? QObject::tr("Java test success") : QObject::tr("Java test failure"),
		text,
		failed ? QMessageBox::Critical : QMessageBox::Information
	)->show();
}

void JavaSettingsWidget::setJavaStatus(JavaSettingsWidget::JavaStatus status)
{
	javaStatus = status;
	switch(javaStatus)
	{
		case JavaStatus::Good:
			m_javaStatusBtn->setIcon(goodIcon);
			break;
		case JavaStatus::NotSet:
		case JavaStatus::Pending:
			m_javaStatusBtn->setIcon(yellowIcon);
			break;
		default:
			m_javaStatusBtn->setIcon(badIcon);
			break;
	}
}

void JavaSettingsWidget::javaPathEdited(const QString& path)
{
	checkJavaPathOnEdit(path);
}

void JavaSettingsWidget::checkJavaPathOnEdit(const QString& path)
{
	auto realPath = FS::ResolveExecutable(path);
	QFileInfo pathInfo(realPath);
	if (pathInfo.baseName().toLower().contains("java"))
	{
		checkJavaPath(path);
	}
	else
	{
		if(!m_checker)
		{
			setJavaStatus(JavaStatus::NotSet);
		}
	}
}

void JavaSettingsWidget::checkJavaPath(const QString &path)
{
	if(m_checker)
	{
		queuedCheck = path;
		return;
	}
	auto realPath = FS::ResolveExecutable(path);
	if(realPath.isNull())
	{
		setJavaStatus(JavaStatus::DoesNotExist);
		return;
	}
	setJavaStatus(JavaStatus::Pending);
	m_checker.reset(new JavaChecker());
	m_checker->m_path = path;
	m_checker->m_minMem = m_minMemSpinBox->value();
	m_checker->m_maxMem = m_maxMemSpinBox->value();
	if(m_permGenSpinBox->isVisible())
	{
		m_checker->m_permGen = m_permGenSpinBox->value();
	}
	connect(m_checker.get(), &JavaChecker::checkFinished, this, &JavaSettingsWidget::checkFinished);
	m_checker->performCheck();
}

void JavaSettingsWidget::checkFinished(JavaCheckResult result)
{
	m_result = result;
	switch(result.validity)
	{
		case JavaCheckResult::Validity::Valid:
		{
			setJavaStatus(JavaStatus::Good);
			break;
		}
		case JavaCheckResult::Validity::ReturnedInvalidData:
		{
			setJavaStatus(JavaStatus::ReturnedInvalidData);
			break;
		}
		case JavaCheckResult::Validity::Errored:
		{
			setJavaStatus(JavaStatus::DoesNotStart);
			break;
		}
	}
	m_checker.reset();
	if(!queuedCheck.isNull())
	{
		checkJavaPath(queuedCheck);
		queuedCheck.clear();
	}
}

void JavaSettingsWidget::retranslate()
{
	m_memoryGroupBox->setTitle(tr("Memory"));
	m_maxMemSpinBox->setToolTip(tr("The maximum amount of memory Minecraft is allowed to use."));
	m_labelMinMem->setText(tr("Minimum memory allocation:"));
	m_labelMaxMem->setText(tr("Maximum memory allocation:"));
	m_minMemSpinBox->setToolTip(tr("The amount of memory Minecraft is started with."));
	m_permGenSpinBox->setToolTip(tr("The amount of memory available to store loaded Java classes."));
	m_javaBrowseBtn->setText(tr("Browse"));
}