/******************************************************************************
 * Product: BrERP Business Solution (http://brerp.org)                        *
 *                                                                            *
 * Copyright (C) 2014 devCoffee Sistemas de Gestão Integrada Ltda.	          *
 *                                                                            *
 * This program is free software; you can redistribute it and/or modify it    *
 * under the terms version 2 of the GNU General Public License as published   *
 * by the Free Software Foundation. This program is distributed in the hope   *
 * that it will be useful, but WITHOUT ANY WARRANTY; without even the implied *
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.           *
 * See the GNU General Public License for more details.                       *
 * You should have received a copy of the GNU General Public License along    *
 * with this program; if not, write to the Free Software Foundation, Inc.,    *
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.                     *
 *****************************************************************************/

package org.brerp.ui.zk.editor;


import org.adempiere.webui.LayoutUtils;
import org.adempiere.webui.adwindow.ADWindow;
import org.adempiere.webui.adwindow.AbstractADWindowContent;
import org.adempiere.webui.editor.WEditor;
import org.adempiere.webui.event.DialogEvents;
import org.adempiere.webui.event.ValueChangeEvent;
import org.adempiere.webui.session.SessionManager;
import org.adempiere.webui.window.WTextEditorDialog;
import org.compiere.model.GridField;
import org.compiere.model.GridTab;
import org.compiere.util.CLogger;
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.EventListener;
import org.zkoss.zk.ui.event.Events;
import org.zkoss.zul.Div;
import org.zkoss.zul.Html;
import org.zkoss.zul.Vlayout;


/**
 * HTML Editor
 * <p> Simple implementation of an editor to show HTML content </p>
 *
 * @author muriloht (muriloht@devcoffee.com.br, http://www.devcoffee.com.br)
 * @version $Id: WHTMLEditor.java, v1.0 11/11/2014 20:25:06, muriloht Exp $
 */
public class WHTMLEditor extends WEditor
{

    private String oldValue;

	private AbstractADWindowContent adwindowContent;

    /** HTML Model         */
	private Html  box = null;

    private boolean m_mandatory;

	private boolean readwrite;

    /**	Logger			*/
	private static CLogger log = CLogger.getCLogger(WHTMLEditor.class);

    public WHTMLEditor(GridTab gridTab, GridField gridField)
    {
        super(new Vlayout(), gridField);
        init();
    }

    @Override
    public Vlayout getComponent() {
    	return (Vlayout) component;
    }

    private void init()
    {
    	log.info("Initializing component");

    	if (gridField != null)
    	{
	    	Vlayout layout = (Vlayout) this.getComponent();
	    	layout.setHeight("100px");
			layout.setWidth("100%");

			Div div = new Div();
			div.setHeight("100px");
			div.setStyle("overflow: auto");
			div.setParent(layout);

			box = new Html();
			box.setParent(div);
			box.addEventListener(Events.ON_CLICK, this);
    	}
    }

     @Override
    public String getDisplay()
    {
    	 return box.getContent();
    }

    @Override
    public Object getValue()
    {
    	if (box == null || box.getContent().isEmpty())
			return null;
		return box.getContent();
    }

    @Override
    public boolean isMandatory()
    {
        return m_mandatory;
    }


    @Override
    public void setMandatory(boolean mandatory)
    {
    	super.setMandatory(mandatory);
        m_mandatory = mandatory;
    }

    @Override
	public boolean isReadWrite() {
		return readwrite;
	}

	@Override
	public void setReadWrite(boolean readWrite) {
		this.readwrite = readWrite;
		if (readWrite)
			getComponent().setStyle("cursor: pointer; border: 1px solid;");
		else
			getComponent().setStyle("cursor: default; border: none;");
	}

	@Override
    public void setValue(Object value)
    {
        if (value != null)
        {
        	box.setContent(value.toString());
        }
        else
        {
        	box.setContent("");
        }
        oldValue = box.getContent();
    }


    @Override
	public String getDisplayTextForGridView(Object value) {
		if (value == null) {
			return "";
		} else {
			return (String)value;
		}
	}

	public void onEvent(Event event) throws Exception
	{
		if (Events.ON_CLICK.equals(event.getName()) && readwrite)
		{
			adwindowContent = findADWindowContent();
			final WTextEditorDialog dialog = new WTextEditorDialog(gridField.getVO().Header, getDisplay(),
					isReadWrite(), gridField.getFieldLength(), true);
			dialog.addEventListener(DialogEvents.ON_WINDOW_CLOSE, new EventListener<Event>() {
				@Override
				public void onEvent(Event event) throws Exception {
					if (adwindowContent != null) {
						adwindowContent.hideBusyMask();
					}
					if (!dialog.isCancelled()) {
						box.setContent(dialog.getText());
						String newText = box.getContent();
				        ValueChangeEvent changeEvent = new ValueChangeEvent(WHTMLEditor.this, WHTMLEditor.this.getColumnName(), oldValue, newText);
				        WHTMLEditor.super.fireValueChange(changeEvent);
				        oldValue = newText;
					}
				}
			});
			if (adwindowContent != null)
			{
				adwindowContent.getComponent().getParent().appendChild(dialog);
				adwindowContent.showBusyMask(dialog);
				LayoutUtils.openOverlappedWindow(adwindowContent.getComponent().getParent(), dialog, "middle_center");
			}
			else
			{
				SessionManager.getAppDesktop().showWindow(dialog);
			}
			dialog.focus();
		}
	}

	private AbstractADWindowContent findADWindowContent() {
		Component parent = getComponent().getParent();
		while(parent != null) {
			if (parent.getAttribute(ADWindow.AD_WINDOW_ATTRIBUTE_KEY) != null) {
				ADWindow adwindow = (ADWindow) parent.getAttribute(ADWindow.AD_WINDOW_ATTRIBUTE_KEY);
				return adwindow.getADWindowContent();
			}
			parent = parent.getParent();
		}
		return null;
	}
}