package org.gcube.portlets.user.td.tablewidget.client.custom;


import com.google.gwt.cell.client.ValueUpdater;
import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.NativeEvent;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.resources.client.ImageResource;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.sencha.gxt.cell.core.client.ResizeCell;
import com.sencha.gxt.core.client.dom.XElement;
import com.sencha.gxt.widget.core.client.event.BeforeSelectEvent;
import com.sencha.gxt.widget.core.client.event.SelectEvent;
import com.sencha.gxt.widget.core.client.event.SelectEvent.HasSelectHandlers;
import com.sencha.gxt.widget.core.client.event.SelectEvent.SelectHandler;

/**
 * 
 * @author "Giancarlo Panichi"
 *
 */
public class ValidationCell extends ResizeCell<Boolean> implements HasSelectHandlers {
 
        private final ValidationCellAppearance appearance;
        private ImageResource trueIcon;
        private ImageResource falseIcon;
        private String title;
        
        public ValidationCell() {
                this(GWT.<ValidationCellAppearance> create(ValidationCellAppearance.class));
        }
 
        public ValidationCell(ValidationCellAppearance appearance) {
                super("click");
                this.appearance = appearance;
        }
        
        public void setTrueIcon(ImageResource icon) {
                this.trueIcon = icon;
        }
        
        public void setFalseIcon(ImageResource icon) {
            this.falseIcon = icon;
    }
        
        public void setTitle(String title) {
                this.title = title;
        }
        
        @Override
        public HandlerRegistration addSelectHandler(SelectHandler handler) {
                return addHandler(handler, SelectEvent.getType());
        }
 
        @Override
        public void render(Context context,
        			Boolean value, SafeHtmlBuilder sb) {
                this.appearance.trueIcon = trueIcon;
                this.appearance.falseIcon = falseIcon;
                if(title==null){
                	title="";
                }
                
                this.appearance.title = title;
                this.appearance.render(sb, value);
        }
        
        @Override
        public void onBrowserEvent(Context context,
                        Element parent, Boolean value, NativeEvent event,
                        ValueUpdater<Boolean> valueUpdater) {
                Element target = event.getEventTarget().cast();
            // ignore the parent element
            if (isDisableEvents() || !parent.getFirstChildElement().isOrHasChild(target)) {
              return;
            }       
            
            XElement p = parent.cast();
 
            String eventType = event.getType();
            if ("click".equals(eventType)) {
              onClick(context, p, value, event, valueUpdater);
            }
        }
 
        private void onClick(Context context, XElement p, Boolean value, NativeEvent event, ValueUpdater<Boolean> valueUpdater) {
          if (!isDisableEvents() && fireCancellableEvent(context, new BeforeSelectEvent(context))) {
            fireEvent(context, new SelectEvent(context));
          }
        }
 
        
}