// License: GPL. Copyright 2007 by Immanuel Scholz and others
package org.openstreetmap.josm.actions;

import static org.openstreetmap.josm.tools.I18n.tr;

import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;

import javax.swing.JDialog;
import javax.swing.JOptionPane;
import javax.swing.JPanel;

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.gui.download.DownloadDialog;
import org.openstreetmap.josm.gui.download.DownloadDialog.DownloadTask;
import org.openstreetmap.josm.tools.GBC;

/**
 * Action that opens a connection to the osm server and downloads map data.
 *
 * An dialog is displayed asking the user to specify a rectangle to grab.
 * The url and account settings from the preferences are used.
 *
 * @author imi
 */
public class DownloadAction extends JosmAction {
	
	public DownloadDialog dialog;
	
	public DownloadAction() {
		super(tr("Download from OSM ..."), "download", tr("Download map data from the OSM server."), KeyEvent.VK_D, InputEvent.CTRL_DOWN_MASK | InputEvent.SHIFT_DOWN_MASK, true);
	}

	public void actionPerformed(ActionEvent e) {
		dialog = new DownloadDialog();
		
		JPanel downPanel = new JPanel(new GridBagLayout());
		downPanel.add(dialog, GBC.eol().fill(GBC.BOTH));

		JOptionPane pane = new JOptionPane(downPanel, JOptionPane.PLAIN_MESSAGE, JOptionPane.OK_CANCEL_OPTION);
		JDialog dlg = pane.createDialog(Main.parent, tr("Download"));
		dlg.setResizable(true);
		dialog.setOptionPane(pane);

		if (dlg.getWidth() > 1000)
			dlg.setSize(1000, dlg.getHeight());
		if (dlg.getHeight() > 600)
			dlg.setSize(dlg.getWidth(),600);

		boolean finish = false;
        while (!finish) {
            dlg.setVisible(true);
            Main.pref.put("download.newlayer", dialog.newLayer.isSelected());
        	if (pane.getValue() instanceof Integer && (Integer)pane.getValue() == JOptionPane.OK_OPTION) {
        		Main.pref.put("download.tab", Integer.toString(dialog.getSelectedTab()));
        		for (DownloadTask task : dialog.downloadTasks) {
        			Main.pref.put("download."+task.getPreferencesSuffix(), task.getCheckBox().isSelected());
        			if (task.getCheckBox().isSelected()) {
        				task.download(this, dialog.minlat, dialog.minlon, dialog.maxlat, dialog.maxlon);
        				finish = true;
        			}
        		}
        	} else
        		finish = true;
        	if (!finish)
        		JOptionPane.showMessageDialog(Main.parent, tr("Please select at least one task to download"));
        }

                dialog = null;
		dlg.dispose();
	}
}