EntityPropertyEditor.java

package com.googlecode.tawus.components;

import org.apache.tapestry5.ComponentAction;
import org.apache.tapestry5.PropertyOverrides;
import org.apache.tapestry5.annotations.Component;
import org.apache.tapestry5.annotations.Environmental;
import org.apache.tapestry5.annotations.Parameter;
import org.apache.tapestry5.beaneditor.BeanModel;
import org.apache.tapestry5.corelib.components.PropertyEditor;
import org.apache.tapestry5.ioc.Messages;
import org.apache.tapestry5.ioc.annotations.Inject;
import org.apache.tapestry5.services.BeanBlockSource;
import org.apache.tapestry5.services.Environment;
import org.apache.tapestry5.services.FormSupport;

import com.googlecode.tawus.internal.table.TdEditorContext;
import com.googlecode.tawus.services.TawusBeanBlockSource;

@SuppressWarnings("unused")
public class EntityPropertyEditor
{

   static public class SetupEnvironment implements ComponentAction<EntityPropertyEditor>
   {
      private static final long serialVersionUID = 1L;
      private int columnSpan;
      private String cssClassPrefix;
      private int rowSpan;
      private boolean showHelp;
      private String helpText;

      public SetupEnvironment(int rowSpan, int columnSpan, String cssClassPrefix, String helpText, boolean showHelp)
      {
         this.rowSpan = rowSpan;
         this.columnSpan = columnSpan;
         this.cssClassPrefix = cssClassPrefix;
         this.showHelp = showHelp;
         this.helpText = helpText;
      }

      public void execute(EntityPropertyEditor editor)
      {
         editor.setupEnvironment(rowSpan, columnSpan, cssClassPrefix, helpText, showHelp);
      }

   }

   static public class CleanupEnvironment implements ComponentAction<EntityPropertyEditor>
   {
      private static final long serialVersionUID = 1L;

      public void execute(EntityPropertyEditor editor)
      {
         editor.cleanupEnvironment();
      }

   }

   private static CleanupEnvironment CLEANUP_ENVIRONMENT = new CleanupEnvironment();

   @Component(id = "propertyEditor", parameters = { "overrides=inherit:overrides", "object=inherit:object",
         "model=inherit:model", "property=inherit:property", "beanBlockSource=prop:beanBlockSource" })
   private PropertyEditor propertyEditor;

   @Parameter(required = true)
   private int rowSpan;

   @Parameter(required = true)
   private int columnSpan;

   @Parameter(required = true)
   private String cssClassPrefix;

   @Parameter(required = true)
   private boolean showHelp;

   @Parameter
   private PropertyOverrides overrides;

   @Parameter
   private Object object;

   @Parameter
   private BeanModel<?> model;

   @Parameter
   private String property;

   @Inject
   private Environment environment;

   @Environmental
   private FormSupport formSupport;

   @Inject
   private TawusBeanBlockSource beanBlockSource;

   public void setupEnvironment(final int rowSpan,
         final int columnSpan,
         final String cssClassPrefix,
         final String helpText,
         final boolean showHelp)
   {
      environment.push(TdEditorContext.class, new TdEditorContext()
      {

         public int getColumnSpan()
         {
            return columnSpan;
         }

         public String getCssClassPrefix()
         {
            return cssClassPrefix;
         }

         public String getHelpText()
         {
            return helpText;
         }

         public int getRowSpan()
         {
            return rowSpan;
         }

         public boolean getShowHelp()
         {
            return showHelp;
         }

      });
   }

   public void cleanupEnvironment()
   {
      environment.pop(TdEditorContext.class);
   }

   void setupRender()
   {
      formSupport.storeAndExecute(this, new SetupEnvironment(rowSpan, columnSpan, cssClassPrefix, getHelpText(),
            showHelp));
   }

   void cleanupRender()
   {
      formSupport.storeAndExecute(this, CLEANUP_ENVIRONMENT);
   }

   public BeanBlockSource getBeanBlockSource()
   {
      return beanBlockSource.getBeanBlockSource();
   }

   public String getHelpText()
   {
      final Messages messages = overrides.getOverrideMessages();
      final String message;
      if(messages.contains(property + "-help"))
      {
         message = messages.get(property + "-help");
      }
      else
      {
         message = "";
      }
      return message;
   }
}