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** This file is part of the examples of the Qt Toolkit.
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module window;

import qt.gui.QSystemTrayIcon;
import qt.gui.QDialog;
import qt.gui.QAction;
import qt.gui.QCheckBox;
import qt.gui.QComboBox;
import qt.gui.QGroupBox;
import qt.gui.QLabel;
import qt.gui.QLineEdit;
import qt.gui.QMenu;
import qt.gui.QPushButton;
import qt.gui.QSpinBox;
import qt.gui.QTextEdit;
import qt.gui.QVBoxLayout;
import qt.gui.QHBoxLayout;
import qt.gui.QMessageBox;
import qt.gui.QGridLayout;


class Window : public QDialog
{
public:

	this()
	{
		createIconGroupBox();
		createMessageGroupBox();

		iconLabel.setMinimumWidth(durationLabel.sizeHint().width());

		createActions();
		createTrayIcon();

		connect!("clicked")(showMessageButton, &this.showMessage);
		connect!("toggled")(showIconCheckBox, &trayIcon.setVisible);
		connect!("currentIndexChanged")(iconComboBox, &this.setIcon);
		connect!("messageClicked")(trayIcon, &this.messageClicked);
		connect!("activated")(trayIcon, &this.iconActivated);

		QVBoxLayout mainLayout = new QVBoxLayout;
		mainLayout.addWidget(iconGroupBox);
		mainLayout.addWidget(messageGroupBox);
		setLayout(mainLayout);

		iconComboBox.setCurrentIndex(1);
		trayIcon.show();

		setWindowTitle(tr("Systray"));
		resize(400, 300);
	}

	void setVisible(bool visible)
	{
		minimizeAction.setEnabled(visible);
		maximizeAction.setEnabled(!isMaximized());
		restoreAction.setEnabled(isMaximized() || !visible);
		QDialog.setVisible(visible);
	}

	protected:

	void closeEvent(QCloseEvent event)
	{
		if (trayIcon.isVisible()) {
			QMessageBox.information(this, tr("Systray"),
				tr("The program will keep running in the system tray. To terminate the program, "
				"choose <b>Quit</b> in the context menu of the system tray entry."));
			hide();
			event.ignore();
		}
	}

private:

	void setIcon(int index)
	{
		QIcon icon = iconComboBox.itemIcon(index);
		trayIcon.setIcon(icon);
		setWindowIcon(icon);

		trayIcon.setToolTip(iconComboBox.itemText(index));
	}
	
	void iconActivated(QSystemTrayIcon.ActivationReason reason)
	{
		switch (reason) {
			case QSystemTrayIcon.Trigger:
			case QSystemTrayIcon.DoubleClick:
				iconComboBox.setCurrentIndex((iconComboBox.currentIndex() + 1) % iconComboBox.count());
				break;
			case QSystemTrayIcon.MiddleClick:
				showMessage();
				break;
			default:
		}
	}
	
	void showMessage()
	{
		QSystemTrayIcon.MessageIcon icon = cast(QSystemTrayIcon.MessageIcon)
			typeComboBox.itemData(typeComboBox.currentIndex()).toInt();
		trayIcon.showMessage(titleEdit.text(), bodyEdit.toPlainText(), icon, durationSpinBox.value() * 1000);
	}
	
	void messageClicked()
	{
		QMessageBox.information(null, tr("Systray"),
			tr("Sorry, I already gave what help I could.\nMaybe you should try asking a human?"));
	}

private:

	void createIconGroupBox()
	{
		iconGroupBox = new QGroupBox(tr("Tray Icon"));

		iconLabel = new QLabel("Icon:");

		iconComboBox = new QComboBox;
		iconComboBox.addItem(new QIcon(":/images/bad.svg"), tr("Bad"));
		iconComboBox.addItem(new QIcon(":/images/heart.svg"), tr("Heart"));
		iconComboBox.addItem(new QIcon(":/images/trash.svg"), tr("Trash"));

		showIconCheckBox = new QCheckBox(tr("Show icon"));
		showIconCheckBox.setChecked(true);

		QHBoxLayout iconLayout = new QHBoxLayout;
		iconLayout.addWidget(iconLabel);
		iconLayout.addWidget(iconComboBox);
		iconLayout.addStretch();
		iconLayout.addWidget(showIconCheckBox);
		iconGroupBox.setLayout(iconLayout);
	}

	void createMessageGroupBox()
	{
		messageGroupBox = new QGroupBox(tr("Balloon Message"));

		typeLabel = new QLabel(tr("Type:"));

		typeComboBox = new QComboBox;
		typeComboBox.addItem(tr("None"), new QVariant(cast(ulong) QSystemTrayIcon.NoIcon));
		typeComboBox.addItem(style().standardIcon(
			QStyle.SP_MessageBoxInformation), tr("Information"),
			new QVariant(cast(ulong) QSystemTrayIcon.Information));
		typeComboBox.addItem(style().standardIcon(
			QStyle.SP_MessageBoxWarning), tr("Warning"),
			new QVariant(cast(ulong) QSystemTrayIcon.Warning));
		typeComboBox.addItem(style().standardIcon(
			QStyle.SP_MessageBoxCritical), tr("Critical"),
			new QVariant(cast(ulong) QSystemTrayIcon.Critical));
		typeComboBox.setCurrentIndex(1);

		durationLabel = new QLabel(tr("Duration:"));

		durationSpinBox = new QSpinBox;
		durationSpinBox.setRange(5, 60);
		durationSpinBox.setSuffix(" s");
		durationSpinBox.setValue(15);

		durationWarningLabel = new QLabel(tr("(some systems might ignore this hint)"));
		durationWarningLabel.setIndent(10);

		titleLabel = new QLabel(tr("Title:"));

		titleEdit = new QLineEdit(tr("Cannot connect to network"));

		bodyLabel = new QLabel(tr("Body:"));

		bodyEdit = new QTextEdit;
		bodyEdit.setPlainText(tr("Don't believe me. Honestly, I don't have a clue.\nClick this balloon for details."));

		showMessageButton = new QPushButton(tr("Show Message"));
		showMessageButton.setDefault(true);

		QGridLayout messageLayout = new QGridLayout;
		messageLayout.addWidget(typeLabel, 0, 0);
		messageLayout.addWidget(typeComboBox, 0, 1, 1, 2);
		messageLayout.addWidget(durationLabel, 1, 0);
		messageLayout.addWidget(durationSpinBox, 1, 1);
		messageLayout.addWidget(durationWarningLabel, 1, 2, 1, 3);
		messageLayout.addWidget(titleLabel, 2, 0);
		messageLayout.addWidget(titleEdit, 2, 1, 1, 4);
		messageLayout.addWidget(bodyLabel, 3, 0);
		messageLayout.addWidget(bodyEdit, 3, 1, 2, 4);
		messageLayout.addWidget(showMessageButton, 5, 4);
		messageLayout.setColumnStretch(3, 1);
		messageLayout.setRowStretch(4, 1);
		messageGroupBox.setLayout(messageLayout);
	}

	void createActions()
	{
		minimizeAction = new QAction(tr("Mi&nimize"), this);
		connect!("triggered")(minimizeAction, &this.hide);

		maximizeAction = new QAction(tr("Ma&ximize"), this);
		connect!("triggered")(maximizeAction, &this.showMaximized);

		restoreAction = new QAction(tr("&Restore"), this);
		connect!("triggered")(restoreAction, &this.showNormal);

		quitAction = new QAction(tr("&Quit"), this);
		connect!("triggered")(quitAction, &QApplication.quit);
	}

	void createTrayIcon()
	{
		trayIconMenu = new QMenu(this);
		trayIconMenu.addAction(minimizeAction);
		trayIconMenu.addAction(maximizeAction);
		trayIconMenu.addAction(restoreAction);
		trayIconMenu.addSeparator();
		trayIconMenu.addAction(quitAction);

		trayIcon = new QSystemTrayIcon(this);
		trayIcon.setContextMenu(trayIconMenu);
	}

	QGroupBox iconGroupBox;
	QLabel iconLabel;
	QComboBox iconComboBox;
	QCheckBox showIconCheckBox;

	QGroupBox messageGroupBox;
	QLabel typeLabel;
	QLabel durationLabel;
	QLabel durationWarningLabel;
	QLabel titleLabel;
	QLabel bodyLabel;
	QComboBox typeComboBox;
	QSpinBox durationSpinBox;
	QLineEdit titleEdit;
	QTextEdit bodyEdit;
	QPushButton showMessageButton;

	QAction minimizeAction;
	QAction maximizeAction;
	QAction restoreAction;
	QAction quitAction;

	QSystemTrayIcon trayIcon;
	QMenu trayIconMenu;
}