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/*
 * Copyright (c) 2016, Peter Rader. All rights reserved.
 *  ___ ___               __                 ______         __     __  __         __
 * |   |   |.-----..----.|  |_ .-----..----.|   __ \.--.--.|  |--.|  ||__|.-----.|  |--.
 * |   |   ||  -__||  __||   _||  _  ||   _||    __/|  |  ||  _  ||  ||  ||__ --||     |
 *  \_____/ |_____||____||____||_____||__|  |___|   |_____||_____||__||__||_____||__|__|
 *
 * http://www.gnu.org/licenses/gpl-3.0.html
 */
package net.vectorpublish.desktop.vp;

import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.LayoutManager;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.LinkedHashSet;
import java.util.Locale.LanguageRange;
import java.util.Set;

import javax.inject.Inject;
import javax.inject.Named;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JLabel;

import net.vectorpublish.desktop.vp.api.conf.Config;
import net.vectorpublish.desktop.vp.api.ui.Warn;
import net.vectorpublish.desktop.vp.i8n.I8n;
import net.vectorpublish.desktop.vp.i8n.LanguageChangeListener;
import net.vectorpublish.desktop.vp.ui.ImageKey;
import net.vectorpublish.desktop.vp.ui.Namespace;
import net.vectorpublish.desktop.vp.ui.i8n.I8nImageFactory;

@Named

public class WarnDialogImpl extends JDialog implements LayoutManager, ActionListener, Warn, LanguageChangeListener {

	private static final int HEADER_HEIGHT = 30;
	private static final Namespace NS_DIALOG_WARNING = Namespace.getNamespace("system.ui", "dialog.warning");
	private static final int BUTTON_HEIGHT = 50;
	private final JLabel label = new JLabel("Warning!");
	private final Set warnings = new LinkedHashSet<>();

	@Inject
	private final Config conf = null;

	public final static Namespace NS = Namespace.getNamespace("net.vectorpublish", "dialogs");

	@Inject
	private final I8nImageFactory imageFactory = null;

	/**
	 * Injects a CDI-Bean.
	 */
	@Inject
	private final I8n i8n = null;

	/**
	 * The default-constructor for the {@link WarnDialogImpl dialog}.
	 * 
	 * Defines the basic layout of the dialog.
	 */
	public WarnDialogImpl() {
		super();

		setTitle("Warning!");
		setModal(true);
		final Container c = getContentPane();
		c.setLayout(this);
		c.add(label);
	}

	@Override
	public void actionPerformed(ActionEvent e) {
		final JButton jb = (JButton) e.getSource();
		getContentPane().remove(jb);
		warnings.remove(jb);
		updateStatus();
	}

	@Override
	public void addLayoutComponent(String name, Component comp) {

	}

	@Override
	public void addWarning(String message) {
		final JButton warningButton = new JButton(message, imageFactory.get(NS, ImageKey.get("warning"), false));
		warningButton.addActionListener(this);
		getContentPane().add(warningButton);
		warnings.add(warningButton);
		updateStatus();
	}

	@Override
	public void changedTo(LanguageRange lr) {
		label.setText(i8n.getTranslation(I8nDialog.WARN_LABEL));
		setTitle(i8n.getTranslation(I8nDialog.WARN_TITLE));
	}

	@Override
	public void layoutContainer(Container parent) {
		label.setBounds(0, 0, getContentPane().getWidth(), HEADER_HEIGHT);
		int index = -1;
		for (final JButton btn : warnings) {
			index++;
			btn.setBounds(0, HEADER_HEIGHT + index * BUTTON_HEIGHT, getContentPane().getWidth(), BUTTON_HEIGHT);
		}
	}

	@Override
	public Dimension minimumLayoutSize(Container parent) {
		return getSize();
	}

	@Override
	public Dimension preferredLayoutSize(Container parent) {
		return getSize();
	}

	@Override
	public void removeLayoutComponent(Component comp) {

	}

	private void updateStatus() {
		if (warnings.isEmpty()) {
			if (isVisible()) {
				conf.storeBounds(NS_DIALOG_WARNING, "bounds", getBounds());
				setVisible(false);
			}
			doLayout();
		} else {
			if (!isVisible()) {
				Rectangle loadBounds = conf.loadBounds(NS_DIALOG_WARNING, "bounds");
				if (loadBounds == null) {
					loadBounds = new Rectangle(Toolkit.getDefaultToolkit().getScreenSize());
				}
				setBounds(loadBounds);
				setVisible(true);
			}
			doLayout();
		}
	}

}