EDIT

// $Id$

/**

* Copyright (C) 2007 EDIT

* European Distributed Institute of Taxonomy 

* http://www.e-taxonomy.eu

* 

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.taxeditor.editor.description;

import java.awt.Color;

import java.util.Map;

import java.util.Set;

import org.apache.log4j.Logger;

import org.eclipse.swt.SWT;

import org.eclipse.swt.browser.Browser;

import org.eclipse.swt.browser.ProgressEvent;

import org.eclipse.swt.browser.ProgressListener;

import org.eclipse.swt.events.ControlEvent;

import org.eclipse.swt.events.ControlListener;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Dialog;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.ProgressBar;

import org.eclipse.swt.widgets.Shell;

import eu.etaxonomy.cdm.ext.EditGeoService;

import eu.etaxonomy.cdm.model.description.Distribution;

import eu.etaxonomy.cdm.model.description.PresenceAbsenceTermBase;

import eu.etaxonomy.taxeditor.editor.AbstractTaxonEditor;

/**

 * @author n.hoffmann

 * @created 26.05.2009

 * @version 1.0

 */

public class DistributionMapDialog extends Dialog {

	private Set<Distribution> distributions;

	private AbstractTaxonEditor editor;

	private Browser browser;

	private Shell shell;

	private static final Logger logger = Logger

	.getLogger(DistributionMapDialog.class);

	/**

	 * @param parent

	 * @param style

	 */

	public DistributionMapDialog(Shell parent, int style) {

		super(parent, style);

		this.setText("Map Viewer");

	}

	/**

	 * @param parent

	 */

	public DistributionMapDialog(AbstractTaxonEditor editor, Shell parent, Set<Distribution> distributions) {

		this(parent, 0);

		this.editor = editor;

		this.distributions = distributions;

	}

	public Object open () {

		Shell parent = getParent();

		shell = new Shell(parent, SWT.DIALOG_TRIM | SWT.MAX | SWT.RESIZE | SWT.APPLICATION_MODAL);

		shell.setText(getText());

		shell.setSize(810, 450);

//		Composite composite = new Composite(shell, SWT.NONE);

		GridLayout gridLayout = new GridLayout();

		gridLayout.numColumns = 1;

		shell.setLayout(gridLayout);

		browser = new Browser(shell, SWT.NONE);

		GridData data = new GridData();

		data.horizontalAlignment = GridData.FILL;

		data.verticalAlignment = GridData.FILL;

		data.grabExcessHorizontalSpace = true;

		data.grabExcessVerticalSpace = true;

		browser.setLayoutData(data);

		final ProgressBar progressBar = new ProgressBar(shell, SWT.NONE);

		data = new GridData();

		data.horizontalAlignment = GridData.END;

		progressBar.setLayoutData(data);

		browser.addProgressListener(new ProgressListener() {

			public void changed(ProgressEvent event) {

					if (event.total == 0) return;                            

					int ratio = event.current * 100 / event.total;

					progressBar.setSelection(ratio);

			}

			public void completed(ProgressEvent event) {

				progressBar.setSelection(0);

			}

		});

		shell.addControlListener(new ControlListener(){

			public void controlMoved(ControlEvent e) {

				// do nothing

			}

			public void controlResized(ControlEvent e) {

				loadMap();

			}

		});

		shell.open();

		loadMap();

		Display display = parent.getDisplay();

		while (!shell.isDisposed()) {

			if (!display.readAndDispatch()) display.sleep();

		}

		return null;

	}

	private void loadMap(){

		browser.setUrl(getMapUrl());

	}

	private String getMapUrl(){

		// FIXME make these hardcoded parameters configurable via preferences

		String url = "http://edit.csic.es/v1/areas.php";

		Map<PresenceAbsenceTermBase<?>,Color> presenceAbsenceTermColors = null;

		int width = calculateWidth();

		int height = 0; 

		String bbox = "-180,-90,180,90"; 

		String backLayer = null;

		String parameter = EditGeoService.getEditGeoServiceUrlParameterString(

				distributions, 

				presenceAbsenceTermColors, 

				width, 

				height, 

				bbox, 

				backLayer);

		return url + "?" + parameter;

	}

	/**

	 * @return

	 */

	private int calculateWidth(){

		return shell.getSize().x - 10;

	}

}