EDIT

/**

* Copyright (C) 2014 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.ui.mvc.element;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.DisposeEvent;

import org.eclipse.swt.events.DisposeListener;

import org.eclipse.swt.events.SelectionAdapter;

import org.eclipse.swt.events.SelectionEvent;

import org.eclipse.swt.graphics.Image;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Button;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.DateTime;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Shell;

import org.eclipse.swt.widgets.Text;

import org.eclipse.ui.forms.widgets.FormToolkit;

import org.eclipse.ui.forms.widgets.TableWrapLayout;

import org.joda.time.DateTimeZone;

import eu.etaxonomy.taxeditor.model.ImageResources;

import eu.etaxonomy.taxeditor.ui.element.CdmFormFactory;

import eu.etaxonomy.taxeditor.ui.element.ICdmFormElement;

import eu.etaxonomy.taxeditor.ui.mvc.AbstractCdmComposite;

/**

 * @author pplitzner

 * @date 16.06.2014

 */

public class DateElement extends AbstractCdmComposite<DateElementController>  {

    private final FormToolkit toolkit = new FormToolkit(Display.getCurrent());

    private org.joda.time.DateTime initialDateTime;

    private final Text textDate;

    private final Button openDateDialog;

    private static final String pattern = "yyyy-MM-dd HH:mm";

    /**

     * Create the composite.

     */

    public DateElement(Composite parent, org.joda.time.DateTime initDateTime, String label, int style, boolean editableText) {

        super(parent, style);

        if (initDateTime != null){

        	this.initialDateTime = initDateTime.toDateTime(DateTimeZone.UTC);

        }

        addDisposeListener(new DisposeListener() {

            @Override

            public void widgetDisposed(DisposeEvent e) {

                toolkit.dispose();

            }

        });

        toolkit.adapt(this);

        toolkit.paintBordersFor(this);

        {

            TableWrapLayout tableWrapLayout = new TableWrapLayout();

            tableWrapLayout.verticalSpacing = 0;

            tableWrapLayout.topMargin = 0;

            tableWrapLayout.rightMargin = 0;

            tableWrapLayout.leftMargin = 0;

            tableWrapLayout.horizontalSpacing = 0;

            tableWrapLayout.bottomMargin = 0;

            setLayout(tableWrapLayout);

        }

        Composite composite = new Composite (this, SWT.NONE);

    	GridLayout layout = new GridLayout ();

    	layout.numColumns = 2;

    	layout.marginWidth = 0;

    	composite.setLayout(layout);

     	textDate = toolkit.createText(composite, null, SWT.BORDER | SWT.SINGLE | SWT.FULL_SELECTION);

        textDate.setEditable(editableText);

        GridData gridData = new GridData(GridData.FILL_HORIZONTAL);

        gridData.minimumWidth = 100;

        textDate.setLayoutData(gridData);

        openDateDialog = new Button (composite, SWT.PUSH);

        Image image = ImageResources.getImage(ImageResources.DATE);

   //     openDateDialog.setText ("Open Date Dialog");

        openDateDialog.setImage(image);

        openDateDialog.addSelectionListener (new SelectionAdapter() {

        	@Override

        	public void widgetSelected(SelectionEvent e){

        		final Shell dialog = new Shell (parent.getShell(), SWT.DIALOG_TRIM);

    			dialog.setLayout (new GridLayout (3, false));

    			dialog.setText(label);

    			final DateTime calendar = new DateTime (dialog, SWT.CALENDAR | SWT.BORDER);

    			final DateTime time = new DateTime (dialog, SWT.TIME | SWT.SHORT);

    			if (initialDateTime != null){

    				calendar.setDate(initialDateTime.getYear(), initialDateTime.getMonthOfYear()-1, initialDateTime.getDayOfMonth());

    				time.setHours(initialDateTime.getHourOfDay());

        			time.setMinutes(initialDateTime.getMinuteOfHour());

//        			time.setSeconds(initialDateTime.getSecondOfMinute());

    			}

//    			new Label (dialog, SWT.NONE);

//    			new Label (dialog, SWT.NONE);

    			Button ok = new Button (dialog, SWT.PUSH);

    			ok.setText ("OK");

    			ok.setLayoutData(new GridData (SWT.FILL, SWT.CENTER, false, false));

    			ok.addSelectionListener (new SelectionAdapter() {

    	        	@Override

    	        	public void widgetSelected(SelectionEvent e){

    	        		setData(makeZonedTimeFromSWT(calendar, time));

    	        		dialog.close ();

    				}

    			});

    			dialog.setDefaultButton (ok);

    			dialog.pack ();

    			dialog.open ();

    		}

        });

        toolkit.adapt(textDate, true, true);

    }

    @Override

    protected void initInternalController(CdmFormFactory formFactory, ICdmFormElement parentElement) {

        controller = new DateElementController(this, formFactory, parentElement, initialDateTime);

        formFactory.adapt(controller);

    }

    public Text getTextDate() {

        return textDate;

    }

    public static org.joda.time.DateTime makeZonedTimeFromSWT(

	                                org.eclipse.swt.widgets.DateTime widget,

	                                org.eclipse.swt.widgets.DateTime dateTime) {

		  //the first month of the year is 0

		  return new org.joda.time.DateTime(widget.getYear(),

				  widget.getMonth()+1,

				  widget.getDay(),

				  dateTime.getHours(),

				  dateTime.getMinutes(),

                  0,

                  0,

                  DateTimeZone.UTC);

	}

	public static void updateSWTwithJoda(

	                                org.eclipse.swt.widgets.DateTime widget,

	                                DateTime dateTime) {

		  widget.setYear(dateTime.getYear());

		  widget.setMonth(dateTime.getMonth() -1);

		  widget.setDay(dateTime.getDay());

		  widget.setHours(dateTime.getHours());

		  widget.setMinutes(dateTime.getMinutes());

	}

	public void setData (org.joda.time.DateTime data) {

			this.initialDateTime = data;

			this.controller.setDateTime(data);

			this.textDate.setText(initialDateTime.toString(pattern));

	}

}