org.eclipse.bpmn2.modeler.runtime.jboss.jbpm5/src/org/eclipse/bpmn2/modeler/runtime/jboss/jbpm5/JBPM5RuntimeExtension.java - bpmn2-modeler/org.eclipse.bpmn2-modeler - Git at Google

 /*******************************************************************************
  * Copyright (c) 2011 Red Hat, Inc.
  *  All rights reserved.
  * This program is made available under the terms of the
  * Eclipse Public License v1.0 which accompanies this distribution,
  * and is available at http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * Red Hat, Inc. - initial API and implementation
  *
  * @author Bob Brodt
  ******************************************************************************/
 package org.eclipse.bpmn2.modeler.runtime.jboss.jbpm5;

 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.util.ArrayList;
 import java.util.Enumeration;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map.Entry;
 import java.util.Scanner;

 import org.apache.xerces.parsers.SAXParser;
 import org.apache.xerces.xni.Augmentations;
 import org.apache.xerces.xni.QName;
 import org.apache.xerces.xni.XMLAttributes;
 import org.apache.xerces.xni.XNIException;
 import org.eclipse.bpmn2.modeler.core.IBpmn2RuntimeExtension;
 import org.eclipse.bpmn2.modeler.core.preferences.Bpmn2Preferences;
 import org.eclipse.bpmn2.modeler.core.runtime.CustomTaskDescriptor;
 import org.eclipse.bpmn2.modeler.core.runtime.ModelExtensionDescriptor.Property;
 import org.eclipse.bpmn2.modeler.core.runtime.TargetRuntime;
 import org.eclipse.bpmn2.modeler.core.utils.ModelUtil.Bpmn2DiagramType;
 import org.eclipse.bpmn2.modeler.runtime.jboss.jbpm5.features.JbpmCustomTaskFeatureContainer;
 import org.eclipse.bpmn2.modeler.runtime.jboss.jbpm5.wid.WIDException;
 import org.eclipse.bpmn2.modeler.runtime.jboss.jbpm5.wid.WIDHandler;
 import org.eclipse.bpmn2.modeler.runtime.jboss.jbpm5.wid.WorkItemDefinition;
 import org.eclipse.bpmn2.modeler.ui.wizards.FileService;
 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.resources.IResourceVisitor;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.graphiti.ui.editor.DiagramEditor;
 import org.eclipse.graphiti.ui.internal.GraphitiUIPlugin;
 import org.eclipse.jface.resource.ImageDescriptor;
 import org.eclipse.jface.resource.ImageRegistry;
 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.ui.IEditorInput;
 import org.eclipse.ui.IEditorSite;
 import org.xml.sax.InputSource;

 @SuppressWarnings("restriction")
 public class JBPM5RuntimeExtension implements IBpmn2RuntimeExtension {

 	private static final String BPMN2_NAMESPACE = "http://www.omg.org/spec/BPMN/20100524/MODEL"; //$NON-NLS-1$
 	private static final String DROOLS_NAMESPACE = "http://www.jboss.org/drools";
 	private static final String ROOT_ELEMENT = "definitions"; //$NON-NLS-1$

 	private RootElementParser parser;
 	private List<WorkItemDefinition> workItemDefinitions;

 	/* (non-Javadoc)
 	 * Check if the given input file is a drools-generated (jBPM) process file.
 	 *
 	 * @see org.eclipse.bpmn2.modeler.core.IBpmn2RuntimeExtension#isContentForRuntime(org.eclipse.core.resources.IFile)
 	 */
 	@Override
 	public boolean isContentForRuntime(IEditorInput input) {
 		try {
 			InputSource source = new InputSource( FileService.getInputContents(input) );
 			parser = new RootElementParser();
 			parser.parse(source);
 		} catch (AcceptedException e) {
 			return true;
 		} catch (Exception e) {
 		} finally {
 			parser = null;
 		}

 		return false;
 	}

 	public String getTargetNamespace(Bpmn2DiagramType diagramType){
 		return DROOLS_NAMESPACE;
 	}

 	public List<WorkItemDefinition> getWorkItemDefinitions() {
 		if (workItemDefinitions==null)
 			workItemDefinitions = new ArrayList<WorkItemDefinition>();
 		return workItemDefinitions;
 	}

 	public WorkItemDefinition getWorkItemDefinition(String taskName) {
 		List<WorkItemDefinition> wids = getWorkItemDefinitions();
 		for (WorkItemDefinition wid : wids) {
 			if (taskName.equals(wid.getName())) {
 				return wid;
 			}
 		}
 		return null;
 	}

 	/**
 	 * Initialize in this case finds all the *.wid/*.conf files in the project
 	 * and creates CustomTaskDescriptors for each task included
 	 * @see org.eclipse.bpmn2.modeler.core.IBpmn2RuntimeExtension#initialize(DiagramEditor)
 	 */
 	public void initialize(DiagramEditor editor) {
 		ISelection sel = editor.getEditorSite().getWorkbenchWindow().getSelectionService().getSelection();
 		if (sel instanceof IStructuredSelection) {
 			Object o = ((IStructuredSelection)sel).getFirstElement();
 			// TODO: if selection came from a Guvnor Repository view, this will be a
 			// org.guvnor.tools.views.model.TreeObject - figure out how to add this dependency.
 			// In this case we may want to explicitly make the editor read-only
 			System.out.println(o);
 		}

 		IProject project = Bpmn2Preferences.getActiveProject();
 		if (project != null) {
 			getWorkItemDefinitions();
 			workItemDefinitions.clear();
 			try {
 				WIDResourceVisitor visitor = new WIDResourceVisitor();
 				project.accept(visitor, IResource.DEPTH_INFINITE, false);
 				if (visitor.getWIDResources().size() > 0) {
 					Iterator<IResource> resourceIter = visitor.getWIDResources().iterator();
 					while (resourceIter.hasNext()) {
 						IResource resource = resourceIter.next();
 						HashMap<String, WorkItemDefinition> widMap =
 								new LinkedHashMap<String, WorkItemDefinition>();
 						String content = getFile(resource);
 						WIDHandler.evaluateWorkDefinitions(widMap, content);
 						workItemDefinitions.addAll(widMap.values());
 					}
 				}
 				if (!workItemDefinitions.isEmpty()) {
 					TargetRuntime.getCurrentRuntime().getCustomTasks().clear();

 					java.util.Iterator<WorkItemDefinition> widIterator = workItemDefinitions.iterator();
 					while(widIterator.hasNext()) {
 						WorkItemDefinition wid = widIterator.next();
 						CustomTaskDescriptor ctd = convertWIDtoCT(wid);
 						if (ctd != null) {
 							if (!TargetRuntime.getCurrentRuntime().customTaskExists(ctd.getId()))
 								TargetRuntime.getCurrentRuntime().addCustomTask(ctd);
 						}
 					}
 				}
 			} catch (CoreException e) {
 				e.printStackTrace();
 			} catch (WIDException e) {
 				e.printStackTrace();
 			}
 		}
 	}

 	/*
 	 * Convert a WID to a CustomTaskDescriptor
 	 * @param wid
 	 * @return
 	 */
 	private CustomTaskDescriptor convertWIDtoCT ( WorkItemDefinition wid ) {
 		if (wid != null) {
 			String id = wid.getName();
 			String name = wid.getName();
 			CustomTaskDescriptor ct = new CustomTaskDescriptor(id,name);
 			ct.setType("Task");
 			ct.setDescription(wid.getName());
 			ct.setFeatureContainer(new JbpmCustomTaskFeatureContainer());
 			ct.getFeatureContainer().setCustomTaskDescriptor(ct);
 			ct.getFeatureContainer().setId(id);

 			// process basic properties here
 			setBasicProps ( ct, wid);

 			// push the icon into the image registry
 			IProject project = Bpmn2Preferences.getActiveProject();
 			String iconPath = getWIDPropertyValue("icon", wid);
 			if (iconPath != null) {
 				Path tempPath = new Path(iconPath);
 				String iconName = tempPath.lastSegment();
 				IconResourceVisitor visitor = new IconResourceVisitor(iconName);
 				try {
 					project.accept(visitor, IResource.DEPTH_INFINITE, false);
 					if (visitor.getIconResources() != null && visitor.getIconResources().size() > 0) {
 						ArrayList<IResource> icons = visitor.getIconResources();
 						IResource icon = icons.get(0);
 						URL url = icon.getLocationURI().toURL();
 						ImageDescriptor image = ImageDescriptor.createFromURL(url);

 						ImageRegistry imageRegistry = GraphitiUIPlugin.getDefault().getImageRegistry();
 						if (imageRegistry.get(iconPath) == null)
 							imageRegistry.put(iconPath, image);
 					}
 				} catch (CoreException e1) {
 					e1.printStackTrace();
 				} catch (MalformedURLException e) {
 					e.printStackTrace();
 				}
 			}

 			// process xml properties here - i.e. task variables
 			Property ioSpecification = createIOSpecificationSection(ct, wid);
 			createDataAssociations(ioSpecification, ct);

 			return ct;
 		}
 		return null;
 	}

 	/*
 	 * Process the high-level props
 	 * @param propName
 	 * @param wid
 	 * @return
 	 */
 	private String getWIDPropertyValue ( String propName, WorkItemDefinition wid) {
 		if (propName.equalsIgnoreCase("taskname")) {
 			return wid.getName();
 		}
 		if (propName.equalsIgnoreCase("displayName")) {
 			return wid.getDisplayName();
 		}
 		if (propName.equalsIgnoreCase("icon")) {
 			return wid.getIcon();
 		}
 		if (propName.equalsIgnoreCase("customEditor")) {
 			return wid.getCustomEditor();
 		}
 		if (propName.equalsIgnoreCase("eclipse:customEditor")) {
 			return wid.getEclipseCustomEditor();
 		}
 		return null;
 	}

 	/*
 	 * Get the high-level prop from the WID
 	 * @param propName
 	 * @param wid
 	 * @return
 	 */
 	private Property getPropertyFromWID ( String propName, WorkItemDefinition wid ) {
 		String name = propName;
 		String value = getWIDPropertyValue(propName, wid);
 		String description = null;
 		String type = "EString";
 		Property prop = new Property(name, description);
 		prop.type = type;
 		if (value == null && propName.equalsIgnoreCase("icon")) {
 			value = "task.png";
 		}
 		if (value!=null)
 			prop.getValues().add(value);
 		return prop;
 	}

 	/*
 	 * Create the input and output data associations
 	 * @param ioSpecification
 	 * @param ct
 	 */
 	private void createDataAssociations ( Property ioSpecification, CustomTaskDescriptor ct) {
 		Object[] values = ioSpecification.getValues().toArray();
 		int inputCounter = -1;
 //		int outputCounter = -1;
 		for (int i = 0; i < values.length; i++) {
 			if (values[i] instanceof Property) {
 				Property prop = (Property) values[i];
 				if (prop.name.equals("dataInputs")) {
 					inputCounter++;
 					Property dataInputAssociations = new Property ( "dataInputAssociations", null);
 					Property targetRef = new Property ("targetRef", null);
 					targetRef.ref = "ioSpecification/dataInputs#" + inputCounter;
 					dataInputAssociations.getValues().add(targetRef);
 					ct.getProperties().add(dataInputAssociations);
 				}
 //				} else 	if (prop.name.equals("dataOutputs")) {
 //					outputCounter++;
 //					Property dataOutputAssociations = new Property ( "dataOutputAssociations", null);
 //					Property sourceRef = new Property ("sourceRef", null);
 //					sourceRef.ref = "ioSpecification/dataOutputs#" + outputCounter;
 //					dataOutputAssociations.getValues().add(sourceRef);
 ////					Property targetRef = new Property ("targetRef", null);
 ////					dataOutputAssociations.getValues().add(targetRef);
 //					ct.getProperties().add(dataOutputAssociations);
 //				}

 			}
 		}
 	}

 	/*
 	 * Handle creating the ioSpecification from the WID/CT
 	 * @param ct
 	 * @param wid
 	 */
 	private Property createIOSpecificationSection ( CustomTaskDescriptor ct, WorkItemDefinition wid ) {
 		Property ioSpecification = new Property ( "ioSpecification", null);

 		for (Entry<String, String> entry : wid.getParameters().entrySet()) {
 			Property dataInputs = new Property("dataInputs", null);
 			Property dataInputsName = new Property("name", null);
 			dataInputsName.getValues().add(entry.getKey());
 			dataInputs.getValues().add(dataInputsName);
 			ioSpecification.getValues().add(dataInputs);
 		}

 		// this code if enabled will create a default output variable

 //		if (wid.getResults().isEmpty()) {
 //			Property dataOutputs = new Property("dataOutputs", null);
 //			Property dataOutputsName = new Property("name", null);
 //			dataOutputsName.getValues().add("result");
 //			dataOutputs.getValues().add(dataOutputsName);
 //			ioSpecification.getValues().add(dataOutputs);
 //		} else {
 			for (Entry<String, String> entry : wid.getResults().entrySet()) {
 				Property dataOutputs = new Property("dataOutputs", null);
 				Property dataOutputsName = new Property("name", null);
 				dataOutputsName.getValues().add(entry.getKey());
 				dataOutputs.getValues().add(dataOutputsName);
 				ioSpecification.getValues().add(dataOutputs);
 			}
 //		}

 		Object[] values = ioSpecification.getValues().toArray();
 		int inputCounter = -1;
 		int outputCounter = -1;
 		Property inputSets = new Property("inputSets", null);
 		Property outputSets = new Property("outputSets", null);
 		for (int i = 0; i < values.length; i++) {
 			if (values[i] instanceof Property) {
 				Property prop = (Property) values[i];
 				if (prop.name.equals("dataInputs")) {
 					inputCounter++;
 					Property inputSetsRef = new Property ("dataInputRefs", null);
 					inputSetsRef.ref = "ioSpecification/dataInputs#" + inputCounter;
 					inputSets.getValues().add(inputSetsRef);
 				} else 	if (prop.name.equals("dataOutputs")) {
 					outputCounter++;
 					Property outputSetsRef = new Property ("dataOutputRefs", null);
 					outputSetsRef.ref = "ioSpecification/dataOutputs#" + outputCounter;
 					outputSets.getValues().add(outputSetsRef);
 				}
 			}
 		}
 		if (inputSets.getValues().size() > 0)
 			ioSpecification.getValues().add(inputSets);
 		if (outputSets.getValues().size() > 0)
 			ioSpecification.getValues().add(outputSets);

 		ct.getProperties().add(ioSpecification);
 		return ioSpecification;
 	}

 	/*
 	 * Handle the top-level props
 	 * @param ct
 	 * @param wid
 	 */
 	private void setBasicProps ( CustomTaskDescriptor ct, WorkItemDefinition wid) {
 		String[] basicProps = new String[] { "taskName", "displayName", "icon" };
 		for (int i = 0; i < basicProps.length; i++) {
 			Property prop = getPropertyFromWID(basicProps[i], wid);
 			ct.getProperties().add(prop);
 		}
 	}

 	/*
 	 * Get the contents of the file
 	 * @param resource
 	 * @return
 	 */
 	private String getFile( IResource resource ) {
 		String filepath = null;
 		if (resource != null) {
 			IPath path = resource.getLocation().makeAbsolute();
 			filepath = path.toOSString();
 		}

 		StringBuilder text = new StringBuilder();
 	    String NL = System.getProperty("line.separator");
 	    Scanner scanner = null;
 	    try {
 	    	scanner = new Scanner(new FileInputStream(filepath), "UTF-8");
 	    	while (scanner.hasNextLine()){
 	    		text.append(scanner.nextLine() + NL);
 	    	}
 	    	return text.toString();
 	    } catch (FileNotFoundException e) {
 	    	e.printStackTrace();
 	    } finally {
 	    	if (scanner != null)
 	    		scanner.close();
 	    }
 	    return null;
 	}

 	/*
 	 * Class: Visits each file in the project to see if it's a *.conf/*.wid
 	 * @author bfitzpat
 	 *
 	 */
 	private class WIDResourceVisitor implements IResourceVisitor {

 		private ArrayList<IResource> widResources = new ArrayList<IResource>();

 		public boolean visit (IResource resource) throws CoreException {
 			if (resource.getType() == IResource.FILE) {
 				if ("conf".equalsIgnoreCase(((IFile)resource).getFileExtension()) ||
 						"wid".equalsIgnoreCase(((IFile)resource).getFileExtension())) {
 					widResources.add(resource);
 					return true;
 				}
 			}
 			return true;
 		}

 		public ArrayList<IResource> getWIDResources() {
 			return widResources;
 		}
 	}

 	/*
 	 * Class: Visits each file in the project looking for the icon
 	 * @author bfitzpat
 	 *
 	 */
 	private class IconResourceVisitor implements IResourceVisitor {

 		private ArrayList<IResource> iconResources = new ArrayList<IResource>();
 		private String iconName;

 		public IconResourceVisitor ( String iconName ) {
 			this.iconName = iconName;
 		}

 		public boolean visit (IResource resource) throws CoreException {
 			if (resource.getType() == IResource.FILE) {
 				if (((IFile)resource).getName().equalsIgnoreCase(iconName)) {
 					iconResources.add(resource);
 					return true;
 				}
 			}
 			return true;
 		}

 		public ArrayList<IResource> getIconResources() {
 			return iconResources;
 		}
 	}

 	private class RootElementParser extends SAXParser {
 		@Override
 		public void startElement(QName qName, XMLAttributes attributes, Augmentations augmentations)
 				throws XNIException {

 			super.startElement(qName, attributes, augmentations);

 			// search the "definitions" for a drools namespace
 			if (ROOT_ELEMENT.equals(qName.localpart)) {
 				Enumeration<?> e = fNamespaceContext.getAllPrefixes();
 				while (e.hasMoreElements()) {
 					String prefix = (String)e.nextElement();
 					String namespace = fNamespaceContext.getURI(prefix);
 					if (DROOLS_NAMESPACE.equals(namespace))
 						throw new AcceptedException(qName.localpart);
 				}
 				throw new RejectedException();
 			} else {
 				throw new RejectedException();
 			}
 		}
 	}

 	private class AcceptedException extends RuntimeException {
 		public String acceptedRootElement;

 		public AcceptedException(String acceptedRootElement) {
 			this.acceptedRootElement = acceptedRootElement;
 		}

 		private static final long serialVersionUID = 1L;
 	}

 	private class RejectedException extends RuntimeException {
 		private static final long serialVersionUID = 1L;
 	}

 	@Override
 	public Composite getPreferencesComposite(Composite parent, Bpmn2Preferences preferences) {
 		return null;
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2011 Red Hat, Inc.
	* All rights reserved.
	* This program is made available under the terms of the
	* Eclipse Public License v1.0 which accompanies this distribution,
	* and is available at http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* Red Hat, Inc. - initial API and implementation
	*
	* @author Bob Brodt
	******************************************************************************/
	package org.eclipse.bpmn2.modeler.runtime.jboss.jbpm5;

	import java.io.FileInputStream;
	import java.io.FileNotFoundException;
	import java.net.MalformedURLException;
	import java.net.URL;
	import java.util.ArrayList;
	import java.util.Enumeration;
	import java.util.HashMap;
	import java.util.Iterator;
	import java.util.LinkedHashMap;
	import java.util.List;
	import java.util.Map.Entry;
	import java.util.Scanner;

	import org.apache.xerces.parsers.SAXParser;
	import org.apache.xerces.xni.Augmentations;
	import org.apache.xerces.xni.QName;
	import org.apache.xerces.xni.XMLAttributes;
	import org.apache.xerces.xni.XNIException;
	import org.eclipse.bpmn2.modeler.core.IBpmn2RuntimeExtension;
	import org.eclipse.bpmn2.modeler.core.preferences.Bpmn2Preferences;
	import org.eclipse.bpmn2.modeler.core.runtime.CustomTaskDescriptor;
	import org.eclipse.bpmn2.modeler.core.runtime.ModelExtensionDescriptor.Property;
	import org.eclipse.bpmn2.modeler.core.runtime.TargetRuntime;
	import org.eclipse.bpmn2.modeler.core.utils.ModelUtil.Bpmn2DiagramType;
	import org.eclipse.bpmn2.modeler.runtime.jboss.jbpm5.features.JbpmCustomTaskFeatureContainer;
	import org.eclipse.bpmn2.modeler.runtime.jboss.jbpm5.wid.WIDException;
	import org.eclipse.bpmn2.modeler.runtime.jboss.jbpm5.wid.WIDHandler;
	import org.eclipse.bpmn2.modeler.runtime.jboss.jbpm5.wid.WorkItemDefinition;
	import org.eclipse.bpmn2.modeler.ui.wizards.FileService;
	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.resources.IProject;
	import org.eclipse.core.resources.IResource;
	import org.eclipse.core.resources.IResourceVisitor;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.graphiti.ui.editor.DiagramEditor;
	import org.eclipse.graphiti.ui.internal.GraphitiUIPlugin;
	import org.eclipse.jface.resource.ImageDescriptor;
	import org.eclipse.jface.resource.ImageRegistry;
	import org.eclipse.jface.viewers.ISelection;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.ui.IEditorInput;
	import org.eclipse.ui.IEditorSite;
	import org.xml.sax.InputSource;

	@SuppressWarnings("restriction")
	public class JBPM5RuntimeExtension implements IBpmn2RuntimeExtension {

	private static final String BPMN2_NAMESPACE = "http://www.omg.org/spec/BPMN/20100524/MODEL"; //$NON-NLS-1$
	private static final String DROOLS_NAMESPACE = "http://www.jboss.org/drools";
	private static final String ROOT_ELEMENT = "definitions"; //$NON-NLS-1$

	private RootElementParser parser;
	private List<WorkItemDefinition> workItemDefinitions;

	/* (non-Javadoc)
	* Check if the given input file is a drools-generated (jBPM) process file.
	*
	* @see org.eclipse.bpmn2.modeler.core.IBpmn2RuntimeExtension#isContentForRuntime(org.eclipse.core.resources.IFile)
	*/
	@Override
	public boolean isContentForRuntime(IEditorInput input) {
	try {
	InputSource source = new InputSource( FileService.getInputContents(input) );
	parser = new RootElementParser();
	parser.parse(source);
	} catch (AcceptedException e) {
	return true;
	} catch (Exception e) {
	} finally {
	parser = null;
	}

	return false;
	}

	public String getTargetNamespace(Bpmn2DiagramType diagramType){
	return DROOLS_NAMESPACE;
	}

	public List<WorkItemDefinition> getWorkItemDefinitions() {
	if (workItemDefinitions==null)
	workItemDefinitions = new ArrayList<WorkItemDefinition>();
	return workItemDefinitions;
	}

	public WorkItemDefinition getWorkItemDefinition(String taskName) {
	List<WorkItemDefinition> wids = getWorkItemDefinitions();
	for (WorkItemDefinition wid : wids) {
	if (taskName.equals(wid.getName())) {
	return wid;
	}
	}
	return null;
	}

	/**
	* Initialize in this case finds all the .wid/.conf files in the project
	* and creates CustomTaskDescriptors for each task included
	* @see org.eclipse.bpmn2.modeler.core.IBpmn2RuntimeExtension#initialize(DiagramEditor)
	*/
	public void initialize(DiagramEditor editor) {
	ISelection sel = editor.getEditorSite().getWorkbenchWindow().getSelectionService().getSelection();
	if (sel instanceof IStructuredSelection) {
	Object o = ((IStructuredSelection)sel).getFirstElement();
	// TODO: if selection came from a Guvnor Repository view, this will be a
	// org.guvnor.tools.views.model.TreeObject - figure out how to add this dependency.
	// In this case we may want to explicitly make the editor read-only
	System.out.println(o);
	}

	IProject project = Bpmn2Preferences.getActiveProject();
	if (project != null) {
	getWorkItemDefinitions();
	workItemDefinitions.clear();
	try {
	WIDResourceVisitor visitor = new WIDResourceVisitor();
	project.accept(visitor, IResource.DEPTH_INFINITE, false);
	if (visitor.getWIDResources().size() > 0) {
	Iterator<IResource> resourceIter = visitor.getWIDResources().iterator();
	while (resourceIter.hasNext()) {
	IResource resource = resourceIter.next();
	HashMap<String, WorkItemDefinition> widMap =
	new LinkedHashMap<String, WorkItemDefinition>();
	String content = getFile(resource);
	WIDHandler.evaluateWorkDefinitions(widMap, content);
	workItemDefinitions.addAll(widMap.values());
	}
	}
	if (!workItemDefinitions.isEmpty()) {
	TargetRuntime.getCurrentRuntime().getCustomTasks().clear();

	java.util.Iterator<WorkItemDefinition> widIterator = workItemDefinitions.iterator();
	while(widIterator.hasNext()) {
	WorkItemDefinition wid = widIterator.next();
	CustomTaskDescriptor ctd = convertWIDtoCT(wid);
	if (ctd != null) {
	if (!TargetRuntime.getCurrentRuntime().customTaskExists(ctd.getId()))
	TargetRuntime.getCurrentRuntime().addCustomTask(ctd);
	}
	}
	}
	} catch (CoreException e) {
	e.printStackTrace();
	} catch (WIDException e) {
	e.printStackTrace();
	}
	}
	}

	/*
	* Convert a WID to a CustomTaskDescriptor
	* @param wid
	* @return
	*/
	private CustomTaskDescriptor convertWIDtoCT ( WorkItemDefinition wid ) {
	if (wid != null) {
	String id = wid.getName();
	String name = wid.getName();
	CustomTaskDescriptor ct = new CustomTaskDescriptor(id,name);
	ct.setType("Task");
	ct.setDescription(wid.getName());
	ct.setFeatureContainer(new JbpmCustomTaskFeatureContainer());
	ct.getFeatureContainer().setCustomTaskDescriptor(ct);
	ct.getFeatureContainer().setId(id);

	// process basic properties here
	setBasicProps ( ct, wid);

	// push the icon into the image registry
	IProject project = Bpmn2Preferences.getActiveProject();
	String iconPath = getWIDPropertyValue("icon", wid);
	if (iconPath != null) {
	Path tempPath = new Path(iconPath);
	String iconName = tempPath.lastSegment();
	IconResourceVisitor visitor = new IconResourceVisitor(iconName);
	try {
	project.accept(visitor, IResource.DEPTH_INFINITE, false);
	if (visitor.getIconResources() != null && visitor.getIconResources().size() > 0) {
	ArrayList<IResource> icons = visitor.getIconResources();
	IResource icon = icons.get(0);
	URL url = icon.getLocationURI().toURL();
	ImageDescriptor image = ImageDescriptor.createFromURL(url);

	ImageRegistry imageRegistry = GraphitiUIPlugin.getDefault().getImageRegistry();
	if (imageRegistry.get(iconPath) == null)
	imageRegistry.put(iconPath, image);
	}
	} catch (CoreException e1) {
	e1.printStackTrace();
	} catch (MalformedURLException e) {
	e.printStackTrace();
	}
	}

	// process xml properties here - i.e. task variables
	Property ioSpecification = createIOSpecificationSection(ct, wid);
	createDataAssociations(ioSpecification, ct);

	return ct;
	}
	return null;
	}

	/*
	* Process the high-level props
	* @param propName
	* @param wid
	* @return
	*/
	private String getWIDPropertyValue ( String propName, WorkItemDefinition wid) {
	if (propName.equalsIgnoreCase("taskname")) {
	return wid.getName();
	}
	if (propName.equalsIgnoreCase("displayName")) {
	return wid.getDisplayName();
	}
	if (propName.equalsIgnoreCase("icon")) {
	return wid.getIcon();
	}
	if (propName.equalsIgnoreCase("customEditor")) {
	return wid.getCustomEditor();
	}
	if (propName.equalsIgnoreCase("eclipse:customEditor")) {
	return wid.getEclipseCustomEditor();
	}
	return null;
	}

	/*
	* Get the high-level prop from the WID
	* @param propName
	* @param wid
	* @return
	*/
	private Property getPropertyFromWID ( String propName, WorkItemDefinition wid ) {
	String name = propName;
	String value = getWIDPropertyValue(propName, wid);
	String description = null;
	String type = "EString";
	Property prop = new Property(name, description);
	prop.type = type;
	if (value == null && propName.equalsIgnoreCase("icon")) {
	value = "task.png";
	}
	if (value!=null)
	prop.getValues().add(value);
	return prop;
	}

	/*
	* Create the input and output data associations
	* @param ioSpecification
	* @param ct
	*/
	private void createDataAssociations ( Property ioSpecification, CustomTaskDescriptor ct) {
	Object[] values = ioSpecification.getValues().toArray();
	int inputCounter = -1;
	// int outputCounter = -1;
	for (int i = 0; i < values.length; i++) {
	if (values[i] instanceof Property) {
	Property prop = (Property) values[i];
	if (prop.name.equals("dataInputs")) {
	inputCounter++;
	Property dataInputAssociations = new Property ( "dataInputAssociations", null);
	Property targetRef = new Property ("targetRef", null);
	targetRef.ref = "ioSpecification/dataInputs#" + inputCounter;
	dataInputAssociations.getValues().add(targetRef);
	ct.getProperties().add(dataInputAssociations);
	}
	// } else if (prop.name.equals("dataOutputs")) {
	// outputCounter++;
	// Property dataOutputAssociations = new Property ( "dataOutputAssociations", null);
	// Property sourceRef = new Property ("sourceRef", null);
	// sourceRef.ref = "ioSpecification/dataOutputs#" + outputCounter;
	// dataOutputAssociations.getValues().add(sourceRef);
	//// Property targetRef = new Property ("targetRef", null);
	//// dataOutputAssociations.getValues().add(targetRef);
	// ct.getProperties().add(dataOutputAssociations);
	// }

	}
	}
	}

	/*
	* Handle creating the ioSpecification from the WID/CT
	* @param ct
	* @param wid
	*/
	private Property createIOSpecificationSection ( CustomTaskDescriptor ct, WorkItemDefinition wid ) {
	Property ioSpecification = new Property ( "ioSpecification", null);

	for (Entry<String, String> entry : wid.getParameters().entrySet()) {
	Property dataInputs = new Property("dataInputs", null);
	Property dataInputsName = new Property("name", null);
	dataInputsName.getValues().add(entry.getKey());
	dataInputs.getValues().add(dataInputsName);
	ioSpecification.getValues().add(dataInputs);
	}

	// this code if enabled will create a default output variable

	// if (wid.getResults().isEmpty()) {
	// Property dataOutputs = new Property("dataOutputs", null);
	// Property dataOutputsName = new Property("name", null);
	// dataOutputsName.getValues().add("result");
	// dataOutputs.getValues().add(dataOutputsName);
	// ioSpecification.getValues().add(dataOutputs);
	// } else {
	for (Entry<String, String> entry : wid.getResults().entrySet()) {
	Property dataOutputs = new Property("dataOutputs", null);
	Property dataOutputsName = new Property("name", null);
	dataOutputsName.getValues().add(entry.getKey());
	dataOutputs.getValues().add(dataOutputsName);
	ioSpecification.getValues().add(dataOutputs);
	}
	// }

	Object[] values = ioSpecification.getValues().toArray();
	int inputCounter = -1;
	int outputCounter = -1;
	Property inputSets = new Property("inputSets", null);
	Property outputSets = new Property("outputSets", null);
	for (int i = 0; i < values.length; i++) {
	if (values[i] instanceof Property) {
	Property prop = (Property) values[i];
	if (prop.name.equals("dataInputs")) {
	inputCounter++;
	Property inputSetsRef = new Property ("dataInputRefs", null);
	inputSetsRef.ref = "ioSpecification/dataInputs#" + inputCounter;
	inputSets.getValues().add(inputSetsRef);
	} else if (prop.name.equals("dataOutputs")) {
	outputCounter++;
	Property outputSetsRef = new Property ("dataOutputRefs", null);
	outputSetsRef.ref = "ioSpecification/dataOutputs#" + outputCounter;
	outputSets.getValues().add(outputSetsRef);
	}
	}
	}
	if (inputSets.getValues().size() > 0)
	ioSpecification.getValues().add(inputSets);
	if (outputSets.getValues().size() > 0)
	ioSpecification.getValues().add(outputSets);

	ct.getProperties().add(ioSpecification);
	return ioSpecification;
	}

	/*
	* Handle the top-level props
	* @param ct
	* @param wid
	*/
	private void setBasicProps ( CustomTaskDescriptor ct, WorkItemDefinition wid) {
	String[] basicProps = new String[] { "taskName", "displayName", "icon" };
	for (int i = 0; i < basicProps.length; i++) {
	Property prop = getPropertyFromWID(basicProps[i], wid);
	ct.getProperties().add(prop);
	}
	}

	/*
	* Get the contents of the file
	* @param resource
	* @return
	*/
	private String getFile( IResource resource ) {
	String filepath = null;
	if (resource != null) {
	IPath path = resource.getLocation().makeAbsolute();
	filepath = path.toOSString();
	}

	StringBuilder text = new StringBuilder();
	String NL = System.getProperty("line.separator");
	Scanner scanner = null;
	try {
	scanner = new Scanner(new FileInputStream(filepath), "UTF-8");
	while (scanner.hasNextLine()){
	text.append(scanner.nextLine() + NL);
	}
	return text.toString();
	} catch (FileNotFoundException e) {
	e.printStackTrace();
	} finally {
	if (scanner != null)
	scanner.close();
	}
	return null;
	}

	/*
	* Class: Visits each file in the project to see if it's a .conf/.wid
	* @author bfitzpat
	*
	*/
	private class WIDResourceVisitor implements IResourceVisitor {

	private ArrayList<IResource> widResources = new ArrayList<IResource>();

	public boolean visit (IResource resource) throws CoreException {
	if (resource.getType() == IResource.FILE) {
	if ("conf".equalsIgnoreCase(((IFile)resource).getFileExtension()) \|\|
	"wid".equalsIgnoreCase(((IFile)resource).getFileExtension())) {
	widResources.add(resource);
	return true;
	}
	}
	return true;
	}

	public ArrayList<IResource> getWIDResources() {
	return widResources;
	}
	}

	/*
	* Class: Visits each file in the project looking for the icon
	* @author bfitzpat
	*
	*/
	private class IconResourceVisitor implements IResourceVisitor {

	private ArrayList<IResource> iconResources = new ArrayList<IResource>();
	private String iconName;

	public IconResourceVisitor ( String iconName ) {
	this.iconName = iconName;
	}

	public boolean visit (IResource resource) throws CoreException {
	if (resource.getType() == IResource.FILE) {
	if (((IFile)resource).getName().equalsIgnoreCase(iconName)) {
	iconResources.add(resource);
	return true;
	}
	}
	return true;
	}

	public ArrayList<IResource> getIconResources() {
	return iconResources;
	}
	}

	private class RootElementParser extends SAXParser {
	@Override
	public void startElement(QName qName, XMLAttributes attributes, Augmentations augmentations)
	throws XNIException {

	super.startElement(qName, attributes, augmentations);

	// search the "definitions" for a drools namespace
	if (ROOT_ELEMENT.equals(qName.localpart)) {
	Enumeration<?> e = fNamespaceContext.getAllPrefixes();
	while (e.hasMoreElements()) {
	String prefix = (String)e.nextElement();
	String namespace = fNamespaceContext.getURI(prefix);
	if (DROOLS_NAMESPACE.equals(namespace))
	throw new AcceptedException(qName.localpart);
	}
	throw new RejectedException();
	} else {
	throw new RejectedException();
	}
	}
	}

	private class AcceptedException extends RuntimeException {
	public String acceptedRootElement;

	public AcceptedException(String acceptedRootElement) {
	this.acceptedRootElement = acceptedRootElement;
	}

	private static final long serialVersionUID = 1L;
	}

	private class RejectedException extends RuntimeException {
	private static final long serialVersionUID = 1L;
	}

	@Override
	public Composite getPreferencesComposite(Composite parent, Bpmn2Preferences preferences) {
	return null;
	}

	}