jsf/plugins/org.eclipse.jst.jsf.core/src/org/eclipse/jst/jsf/taglibprocessing/attributevalues/ResourceBundleType.java

package org.eclipse.jst.jsf.taglibprocessing.attributevalues;

import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.List;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IStorage;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jst.jsf.context.resolver.structureddocument.IStructuredDocumentContextResolverFactory;
import org.eclipse.jst.jsf.context.resolver.structureddocument.IWorkspaceContextResolver;
import org.eclipse.jst.jsf.core.internal.tld.LoadBundleUtil;
import org.eclipse.jst.jsf.metadataprocessors.AbstractRootTypeDescriptor;
import org.eclipse.jst.jsf.metadataprocessors.features.IValidValues;
import org.eclipse.jst.jsf.metadataprocessors.features.IValidationMessage;
import org.eclipse.jst.jsf.metadataprocessors.features.ValidationMessage;

/**
 * Meta-data processing type representing a path to resource bundle on classpath
 * Patch by Vadim Dmitriev.  See https://bugs.eclipse.org/bugs/show_bug.cgi?id=203307.
 * 
 * @author Vadim Dmitriev
 */
public class ResourceBundleType extends AbstractRootTypeDescriptor implements IValidValues 
{
	private IProject _project 								= null;
	private final List<IValidationMessage> _validationMsgs 	= new ArrayList<IValidationMessage>(1);
	
	private IProject getProject()
	{
		if( _project == null )
		{
            final IWorkspaceContextResolver wkspaceResolver =
                IStructuredDocumentContextResolverFactory.INSTANCE.getWorkspaceContextResolver( getStructuredDocumentContext() );
            _project = wkspaceResolver.getProject();
		}
		
		return _project;
	}

	public boolean isValidValue( String value )
	{
		try
		{
			IProject project = getProject();
			IStorage bundle = LoadBundleUtil.getLoadBundleResource( project , value );
			if( bundle != null )
			{
				return true;
			}
		}
		catch (CoreException e) 
		{
			//error message is generated later
		}
		
		final String message = 
			MessageFormat.format(Messages.Bundle_not_found_rb, value); 
		_validationMsgs.add(new ValidationMessage(message, "", IStatus.ERROR));
		return false;
	}
	
	public List getValidationMessages() 
	{
		return _validationMsgs;
	}
}