plugins/org.eclipse.bpmn2.modeler.runtime.jboss.jbpm/src/org/eclipse/bpmn2/modeler/runtime/jboss/jbpm5/property/JbpmTaskDetailComposite.java - bpmn2-modeler/org.eclipse.bpmn2-modeler - Git at Google

 /*******************************************************************************
  * Copyright (c) 2011, 2012 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.property;

 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;

 import org.eclipse.bpmn2.DataAssociation;
 import org.eclipse.bpmn2.DataInput;
 import org.eclipse.bpmn2.DataOutput;
 import org.eclipse.bpmn2.Definitions;
 import org.eclipse.bpmn2.Expression;
 import org.eclipse.bpmn2.FormalExpression;
 import org.eclipse.bpmn2.InputOutputSpecification;
 import org.eclipse.bpmn2.InputSet;
 import org.eclipse.bpmn2.ItemAwareElement;
 import org.eclipse.bpmn2.ItemDefinition;
 import org.eclipse.bpmn2.ItemKind;
 import org.eclipse.bpmn2.OutputSet;
 import org.eclipse.bpmn2.PotentialOwner;
 import org.eclipse.bpmn2.ResourceAssignmentExpression;
 import org.eclipse.bpmn2.ResourceRole;
 import org.eclipse.bpmn2.Task;
 import org.eclipse.bpmn2.modeler.core.adapters.ExtendedPropertiesAdapter;
 import org.eclipse.bpmn2.modeler.core.adapters.InsertionAdapter;
 import org.eclipse.bpmn2.modeler.core.features.CustomElementFeatureContainer;
 import org.eclipse.bpmn2.modeler.core.merrimac.clad.AbstractBpmn2PropertySection;
 import org.eclipse.bpmn2.modeler.core.merrimac.clad.AbstractDetailComposite;
 import org.eclipse.bpmn2.modeler.core.merrimac.clad.AbstractListComposite;
 import org.eclipse.bpmn2.modeler.core.merrimac.clad.DefaultDetailComposite;
 import org.eclipse.bpmn2.modeler.core.merrimac.clad.DefaultListComposite;
 import org.eclipse.bpmn2.modeler.core.merrimac.clad.DefaultPropertiesCompositeFactory;
 import org.eclipse.bpmn2.modeler.core.merrimac.clad.IPropertiesCompositeFactory;
 import org.eclipse.bpmn2.modeler.core.merrimac.clad.ListCompositeColumnProvider;
 import org.eclipse.bpmn2.modeler.core.merrimac.clad.ListCompositeContentProvider;
 import org.eclipse.bpmn2.modeler.core.merrimac.clad.TableColumn;
 import org.eclipse.bpmn2.modeler.core.merrimac.dialogs.ButtonObjectEditor;
 import org.eclipse.bpmn2.modeler.core.merrimac.dialogs.ObjectEditingDialog;
 import org.eclipse.bpmn2.modeler.core.merrimac.dialogs.ReadonlyTextObjectEditor;
 import org.eclipse.bpmn2.modeler.core.merrimac.dialogs.TextObjectEditor;
 import org.eclipse.bpmn2.modeler.core.runtime.ModelExtensionDescriptor;
 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;
 import org.eclipse.bpmn2.modeler.runtime.jboss.jbpm5.features.JbpmCustomTaskFeatureContainer;
 import org.eclipse.bpmn2.modeler.runtime.jboss.jbpm5.features.JbpmCustomTaskFeatureContainer.ConfigureWorkItemFeature;
 import org.eclipse.bpmn2.modeler.runtime.jboss.jbpm5.wid.editor.DroolsProxy;
 import org.eclipse.bpmn2.modeler.ui.property.tasks.IoParameterMappingColumn;
 import org.eclipse.emf.common.util.EList;
 import org.eclipse.emf.ecore.EAttribute;
 import org.eclipse.emf.ecore.EClass;
 import org.eclipse.emf.ecore.EObject;
 import org.eclipse.emf.ecore.EStructuralFeature;
 import org.eclipse.graphiti.features.IFeatureProvider;
 import org.eclipse.graphiti.features.context.impl.CustomContext;
 import org.eclipse.graphiti.features.custom.ICustomFeature;
 import org.eclipse.graphiti.mm.pictograms.PictogramElement;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.window.Window;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.widgets.Composite;

 /**
  * @author Bob Brodt
  *
  */
 public class JbpmTaskDetailComposite extends JbpmActivityDetailComposite {

 	class DataInputOutputEditor extends ReadonlyTextObjectEditor {

 		private String name;
 		private Task task;

 		public DataInputOutputEditor(Task task, ItemAwareElement parameter) {
 			super (JbpmTaskDetailComposite.this, parameter,
 					parameter instanceof DataInput ? PACKAGE.getDataInput_Name() : PACKAGE.getDataOutput_Name());
 			name = (String) parameter.eGet(this.feature);
 			this.task = task;
 		}

 		@Override
 		protected String getText() {
 			EStructuralFeature f = object instanceof DataInput ?
 					PACKAGE.getActivity_DataInputAssociations() :
 					PACKAGE.getActivity_DataOutputAssociations();
 			IoParameterMappingColumn col = new IoParameterMappingColumn(task,f);
 			return col.getText(object);
 		}

 		@Override
 		protected void buttonClicked(int buttonId) {
 			ObjectEditingDialog dialog = new ObjectEditingDialog(getDiagramEditor(), object);
 			IPropertiesCompositeFactory factory = new DefaultPropertiesCompositeFactory() {
 				@Override
 				public AbstractDetailComposite createDetailComposite(Class eClass, Composite parent, TargetRuntime targetRuntime, int style) {
 					JbpmDataAssociationDetailComposite composite = new JbpmDataAssociationDetailComposite(parent, SWT.NONE);
 					if (object instanceof DataInput)
 						composite.setShowToGroup(false);
 					else
 						composite.setShowFromGroup(false);
 					return composite;
 				}
 			};
 			if (object instanceof DataInput)
 				dialog.setTitle("Edit Source for Input Parameter \""+ModelUtil.toCanonicalString(name)+"\"");
 			else
 				dialog.setTitle("Edit Destination for Output Parameter \""+ModelUtil.toCanonicalString(name)+"\"");
 			dialog.setCompositeFactory(factory);
 			if (dialog.open() == Window.OK) {
 				// this just forces an update of the editor text field
 				setValue(object.eGet(feature));
 			}
 		}

 	};

 	/**
 	 * @param section
 	 */
 	public JbpmTaskDetailComposite(AbstractBpmn2PropertySection section) {
 		super(section);
 	}

 	public JbpmTaskDetailComposite(Composite parent, int style) {
 		super(parent, style);
 	}

 	@Override
 	public void cleanBindings() {
 		super.cleanBindings();
 	}

 	@Override
 	protected boolean isModelObjectEnabled(String className, String featureName) {
 		if ("DataInput".equals(className)) //$NON-NLS-1$
 			return true;
 		return super.isModelObjectEnabled(className, featureName);
 	}

 	@Override
 	public void createBindings(EObject be) {
 		createInputParameterBindings((Task)be);
 		super.createBindings(be);
 	}

 	/**
 	 * Create Object Editors for each of the Task's input parameters (DataInputs) that are
 	 * defined in the extension plugin.xml
 	 *
 	 * The mappings for these parameters are simply text expressions and will be rendered
 	 * as individual editable fields on the Task property tab instead of being included in
 	 * the I/O Parameters list.
 	 *
 	 * @param task
 	 */
 	protected void createInputParameterBindings(final Task task) {
 		// Does the WID for this Task define a Work Item Editor dialog?
 		// If so, do not display the WID parameters in this Property tab.
 		boolean hasWorkItemEditor = false;
 		final IFeatureProvider fp = getDiagramEditor().getDiagramTypeProvider().getFeatureProvider();
 		final PictogramElement pe = fp.getPictogramElementForBusinessObject(task);
 		final CustomContext cc = new CustomContext(new PictogramElement[] { pe });
 		for (ICustomFeature cf : fp.getCustomFeatures(cc)) {
 			if (cf.isAvailable(cc) && cf.canExecute(cc) && cf instanceof ConfigureWorkItemFeature) {
 				hasWorkItemEditor = true;
 				break;
 			}
 		}
 		if (hasWorkItemEditor) {
 			// TODO:
 			// 1. create a New Work Item Editor wizard that copies the required
 			// java interfaces and a sample implementation into the user's
 			// java project.
 			// 2. hook the ButtonObjectEditor into an action that pops up
 			// the Work Item Editor.
 			ButtonObjectEditor button = new ButtonObjectEditor(this, task, null) {
 				@Override
 				protected void buttonClicked() {
 					for (ICustomFeature cf : fp.getCustomFeatures(cc)) {
 						if (cf instanceof ConfigureWorkItemFeature) {
 							cf.execute(cc);
 							break;
 						}
 					}
 				}
 			};
 			button.createControl(this.getAttributesParent(), "Edit Work Item Parameters");
 			return;
 		}

 		// Get the Model Extension Descriptor for this Custom Task.
 		// This will contain the Data Inputs and Outputs that were
 		// defined for the Custom Task either in the plugin.xml
 		// or by way of Work Item Definition files contained in
 		// the project or the project's classpath.
 		ModelExtensionDescriptor med = null;
 		ExtendedPropertiesAdapter<?> adapter = ExtendedPropertiesAdapter.adapt(task);
 		if (adapter!=null) {
 			// look for it in the property adapter first
 			med = adapter.getProperty(ModelExtensionDescriptor.class);
 		}

 		if (med==null) {
 			// not found? get the Custom Task ID from the Task object
 			String id = CustomElementFeatureContainer.findId(task);
 			if (id!=null) {
 				// and look it up in the Target Runtime's list of
 				// Custom Task Descriptors
 		    	TargetRuntime rt = TargetRuntime.getRuntime(task);
 		    	med = rt.getCustomTask(id);
 			}
 		}

 		if (med!=null) {
 			// This Task object has additional properties defined either by way of the
 			// <modelExtension> defined in the plugin.xml or in Work Item Definitions.
 			// Check if any of the extension properties extend the DataInputs or DataOutputs
 			// (i.e. the I/O Parameter mappings) and create Object Editors for them.
 			// If the Task does not define these parameter mappings, create temporary objects
 			// for the editors (these will go away if they are not touched by the user)
 			InputOutputSpecification ioSpec = task.getIoSpecification();
 			if (ioSpec==null) {
 				ioSpec = createModelObject(InputOutputSpecification.class);
 				InsertionAdapter.add(task,
 						PACKAGE.getActivity_IoSpecification(),
 						ioSpec);
 			}

 			List<Property> props = med.getProperties("ioSpecification/dataInputs/name"); //$NON-NLS-1$
 			for (Property property : props) {

 				// this will become the label for the Object Editor
 				final String name = property.getFirstStringValue();
 				// the input parameter
 				ItemAwareElement parameter = createInputOutputParameter(task, ioSpec, name, true);

 				// create a read-only text field and object editor button for this parameter
 				DataInputOutputEditor editor = new DataInputOutputEditor(task, parameter);
 				editor.createControl(getAttributesParent(),ModelUtil.toCanonicalString(name));
 			}

 			props = med.getProperties("ioSpecification/dataOutputs/name"); //$NON-NLS-1$
 			for (Property property : props) {

 				// this will become the label for the Object Editor
 				final String name = property.getFirstStringValue();
 				// the input parameter
 				ItemAwareElement parameter = createInputOutputParameter(task, ioSpec, name, false);

 				// create a read-only text field and object editor button for this parameter
 				DataInputOutputEditor editor = new DataInputOutputEditor(task, parameter);
 				editor.createControl(getAttributesParent(),ModelUtil.toCanonicalString(name));
 			}
 		}
 	}

 	private ItemAwareElement createInputOutputParameter(Task task, InputOutputSpecification ioSpec, String name, boolean isInput) {
         Definitions definitions = ModelUtil.getDefinitions(task);

 		ItemAwareElement parameter = null;
 		DataAssociation association = null;
 		if (isInput) {
 			for (DataInput input : ioSpec.getDataInputs()) {
 				if (name.equals(input.getName())) {
 					// this is the one!
 					parameter = input;
 					for (DataAssociation da : task.getDataInputAssociations()) {
 						if (da.getTargetRef() == input) {
 							association = da;
 							break;
 						}
 					}
 					break;
 				}
 			}
 		}
 		else {
 			for (DataOutput output : ioSpec.getDataOutputs()) {
 				if (name.equals(output.getName())) {
 					// this is the one!
 					parameter = output;
 					for (DataAssociation da : task.getDataOutputAssociations()) {
 						for (ItemAwareElement e : da.getSourceRef()) {
 							if (e == output) {
 								association = da;
 								break;
 							}
 						}
 						if (association!=null)
 							break;
 					}
 					break;
 				}
 			}
 		}
 		if (parameter!=null)
 			return parameter;

         ItemDefinition itemDef = createModelObject(ItemDefinition.class);
         itemDef.setItemKind(ItemKind.INFORMATION);
         itemDef.setStructureRef( ModelUtil.createStringWrapper("Object") ); //$NON-NLS-1$
         InsertionAdapter.add(definitions,
                 PACKAGE.getDefinitions_RootElements(),
                 itemDef);

 		parameter = createModelObject(isInput ? DataInput.class : DataOutput.class);
 		if (isInput)
 			((DataInput)parameter).setName(name);
 		else
 			((DataOutput)parameter).setName(name);

 		parameter.setItemSubjectRef(itemDef);
 		InsertionAdapter.add(ioSpec,
 				isInput ? PACKAGE.getInputOutputSpecification_DataInputs() : PACKAGE.getInputOutputSpecification_DataOutputs(),
 				parameter);

 		// create the InputSet if needed
 		if (isInput) {
 			InputSet inputSet = null;
 			if (ioSpec.getInputSets().size()==0) {
 				inputSet = createModelObject(InputSet.class);
 				InsertionAdapter.add(ioSpec,
 						PACKAGE.getInputOutputSpecification_InputSets(),
 						inputSet);
 			}
 			else
 				inputSet = ioSpec.getInputSets().get(0);
 			// add the parameter to the InputSet also
 			InsertionAdapter.add(inputSet,
 					PACKAGE.getInputSet_DataInputRefs(),
 					parameter);
 		}
 		else {
 			OutputSet outputSet = null;
 			if (ioSpec.getOutputSets().size()==0) {
 				outputSet = createModelObject(OutputSet.class);
 				InsertionAdapter.add(ioSpec,
 						PACKAGE.getInputOutputSpecification_OutputSets(),
 						outputSet);
 			}
 			else
 				outputSet = ioSpec.getOutputSets().get(0);
 			// add the parameter to the OutputSet also
 			InsertionAdapter.add(outputSet,
 					PACKAGE.getOutputSet_DataOutputRefs(),
 					parameter);
 		}


 		return parameter;
 	}

 	@Override
 	protected AbstractListComposite bindList(EObject object, EStructuralFeature feature, EClass listItemClass) {
 		if (feature.getName().equals("resources")) { //$NON-NLS-1$
 			if (isModelObjectEnabled(object.eClass(), feature)) {
 				ActorsListComposite actors = new ActorsListComposite(this);
 				actors.bindList(object, feature);
 				actors.setTitle(Messages.JbpmTaskDetailComposite_Actors_Title);
 				return actors;
 			}
 			return null;
 		}
 		else
 			return super.bindList(object, feature, listItemClass);
 	}

 	public class ActorsNameTableColumn extends TableColumn {
 		public ActorsNameTableColumn(EObject object) {
 			super(object, PACKAGE.getFormalExpression_Body());
 			setHeaderText(Messages.JbpmTaskDetailComposite_Actors_Name_Column);
 			setEditable(true);
 		}
 	}

 	public class ActorsListComposite extends DefaultListComposite {

 		public ActorsListComposite(Composite parent) {
 			super(parent, AbstractListComposite.DEFAULT_STYLE);
 		}

 		public EClass getListItemClass(EObject object, EStructuralFeature feature) {
 			return PACKAGE.getFormalExpression();
 		}

 		@Override
 		public ListCompositeColumnProvider getColumnProvider(EObject object, EStructuralFeature feature) {
 			if (columnProvider==null) {
 				columnProvider = new ListCompositeColumnProvider(this);
 				columnProvider.add( new ActorsNameTableColumn(object) );
 			}
 			return columnProvider;
 		}

 		public ListCompositeContentProvider getContentProvider(EObject object, EStructuralFeature feature, EList<EObject>list) {
 			if (contentProvider==null) {
 				contentProvider = new ListCompositeContentProvider(this, object, feature, list) {
 					@Override
 					public Object[] getElements(Object inputElement) {
 						List<Object> elements = new ArrayList<Object>();
 						Task task = (Task)object;
 						for (ResourceRole owner : task.getResources()) {
 							ResourceAssignmentExpression resourceAssignment = owner.getResourceAssignmentExpression();
 							if (resourceAssignment!=null) {
 								Expression expression = resourceAssignment.getExpression();
 								if (expression instanceof FormalExpression) {
 									elements.add(expression);
 								}
 							}
 						}
 						return elements.toArray();
 					}
 				};
 			}
 			return contentProvider;
 		}

 		public AbstractDetailComposite createDetailComposite(Class eClass, Composite parent, int style) {
 			AbstractDetailComposite composite = new DefaultDetailComposite(parent, style) {
 				@Override
 				protected Composite bindFeature(EObject be, EStructuralFeature feature, EClass eItemClass) {
 					Composite composite = null;
 					if (feature!=null && "body".equals(feature.getName())) { //$NON-NLS-1$
 						super.bindFeature(be, feature, eItemClass);
 					}
 					return composite;
 				}

 				@Override
 				protected void bindAttribute(Composite parent, EObject object, EAttribute attribute, String label) {
 					TextObjectEditor editor = new TextObjectEditor(this,object,attribute);
 					editor.setMultiLine(false);
 					editor.createControl(parent,Messages.JbpmTaskDetailComposite_Actors_Name_Column);
 				}
 			};
 			return composite;
 		}

 		protected EObject addListItem(EObject object, EStructuralFeature feature) {
 			Task task = (Task)object;

 			FormalExpression expression = createModelObject(FormalExpression.class);

 			ResourceAssignmentExpression resourceAssignment = createModelObject(ResourceAssignmentExpression.class);
 			resourceAssignment.setExpression(expression);
 			PotentialOwner owner = createModelObject(PotentialOwner.class);
 			owner.setResourceAssignmentExpression(resourceAssignment);
 			task.getResources().add(owner);

 			expression.setBody(Messages.JbpmTaskDetailComposite_Actors_Label);

 			return expression;
 		}

 		protected Object removeListItem(EObject object, EStructuralFeature feature, int index) {
 			Task task = (Task)object;
 			int size = task.getResources().size();
 			if (index>=0 && index<size) {
 				task.getResources().remove(index);
 			}
 			return null;
 		}

 		@Override
 		protected Object moveListItemUp(EObject object, EStructuralFeature feature, int index) {
 			Task task = (Task)object;
 			int size = task.getResources().size();
 			if (index>0 && index<size) {
 				ResourceRole owner = task.getResources().remove(index);
 				task.getResources().add(index-1, owner);
 				return owner;
 			}
 			return null;
 		}

 		@Override
 		protected Object moveListItemDown(EObject object, EStructuralFeature feature, int index) {
 			Task task = (Task)object;
 			int size = task.getResources().size();
 			if (index>=0 && index<size-1) {
 				ResourceRole owner = task.getResources().remove(index);
 				task.getResources().add(index, owner);
 				return owner;
 			}
 			return null;
 		}
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2011, 2012 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.property;

	import java.util.ArrayList;
	import java.util.Iterator;
	import java.util.List;
	import java.util.Map;

	import org.eclipse.bpmn2.DataAssociation;
	import org.eclipse.bpmn2.DataInput;
	import org.eclipse.bpmn2.DataOutput;
	import org.eclipse.bpmn2.Definitions;
	import org.eclipse.bpmn2.Expression;
	import org.eclipse.bpmn2.FormalExpression;
	import org.eclipse.bpmn2.InputOutputSpecification;
	import org.eclipse.bpmn2.InputSet;
	import org.eclipse.bpmn2.ItemAwareElement;
	import org.eclipse.bpmn2.ItemDefinition;
	import org.eclipse.bpmn2.ItemKind;
	import org.eclipse.bpmn2.OutputSet;
	import org.eclipse.bpmn2.PotentialOwner;
	import org.eclipse.bpmn2.ResourceAssignmentExpression;
	import org.eclipse.bpmn2.ResourceRole;
	import org.eclipse.bpmn2.Task;
	import org.eclipse.bpmn2.modeler.core.adapters.ExtendedPropertiesAdapter;
	import org.eclipse.bpmn2.modeler.core.adapters.InsertionAdapter;
	import org.eclipse.bpmn2.modeler.core.features.CustomElementFeatureContainer;
	import org.eclipse.bpmn2.modeler.core.merrimac.clad.AbstractBpmn2PropertySection;
	import org.eclipse.bpmn2.modeler.core.merrimac.clad.AbstractDetailComposite;
	import org.eclipse.bpmn2.modeler.core.merrimac.clad.AbstractListComposite;
	import org.eclipse.bpmn2.modeler.core.merrimac.clad.DefaultDetailComposite;
	import org.eclipse.bpmn2.modeler.core.merrimac.clad.DefaultListComposite;
	import org.eclipse.bpmn2.modeler.core.merrimac.clad.DefaultPropertiesCompositeFactory;
	import org.eclipse.bpmn2.modeler.core.merrimac.clad.IPropertiesCompositeFactory;
	import org.eclipse.bpmn2.modeler.core.merrimac.clad.ListCompositeColumnProvider;
	import org.eclipse.bpmn2.modeler.core.merrimac.clad.ListCompositeContentProvider;
	import org.eclipse.bpmn2.modeler.core.merrimac.clad.TableColumn;
	import org.eclipse.bpmn2.modeler.core.merrimac.dialogs.ButtonObjectEditor;
	import org.eclipse.bpmn2.modeler.core.merrimac.dialogs.ObjectEditingDialog;
	import org.eclipse.bpmn2.modeler.core.merrimac.dialogs.ReadonlyTextObjectEditor;
	import org.eclipse.bpmn2.modeler.core.merrimac.dialogs.TextObjectEditor;
	import org.eclipse.bpmn2.modeler.core.runtime.ModelExtensionDescriptor;
	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;
	import org.eclipse.bpmn2.modeler.runtime.jboss.jbpm5.features.JbpmCustomTaskFeatureContainer;
	import org.eclipse.bpmn2.modeler.runtime.jboss.jbpm5.features.JbpmCustomTaskFeatureContainer.ConfigureWorkItemFeature;
	import org.eclipse.bpmn2.modeler.runtime.jboss.jbpm5.wid.editor.DroolsProxy;
	import org.eclipse.bpmn2.modeler.ui.property.tasks.IoParameterMappingColumn;
	import org.eclipse.emf.common.util.EList;
	import org.eclipse.emf.ecore.EAttribute;
	import org.eclipse.emf.ecore.EClass;
	import org.eclipse.emf.ecore.EObject;
	import org.eclipse.emf.ecore.EStructuralFeature;
	import org.eclipse.graphiti.features.IFeatureProvider;
	import org.eclipse.graphiti.features.context.impl.CustomContext;
	import org.eclipse.graphiti.features.custom.ICustomFeature;
	import org.eclipse.graphiti.mm.pictograms.PictogramElement;
	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.window.Window;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.widgets.Composite;

	/**
	* @author Bob Brodt
	*
	*/
	public class JbpmTaskDetailComposite extends JbpmActivityDetailComposite {

	class DataInputOutputEditor extends ReadonlyTextObjectEditor {

	private String name;
	private Task task;

	public DataInputOutputEditor(Task task, ItemAwareElement parameter) {
	super (JbpmTaskDetailComposite.this, parameter,
	parameter instanceof DataInput ? PACKAGE.getDataInput_Name() : PACKAGE.getDataOutput_Name());
	name = (String) parameter.eGet(this.feature);
	this.task = task;
	}

	@Override
	protected String getText() {
	EStructuralFeature f = object instanceof DataInput ?
	PACKAGE.getActivity_DataInputAssociations() :
	PACKAGE.getActivity_DataOutputAssociations();
	IoParameterMappingColumn col = new IoParameterMappingColumn(task,f);
	return col.getText(object);
	}

	@Override
	protected void buttonClicked(int buttonId) {
	ObjectEditingDialog dialog = new ObjectEditingDialog(getDiagramEditor(), object);
	IPropertiesCompositeFactory factory = new DefaultPropertiesCompositeFactory() {
	@Override
	public AbstractDetailComposite createDetailComposite(Class eClass, Composite parent, TargetRuntime targetRuntime, int style) {
	JbpmDataAssociationDetailComposite composite = new JbpmDataAssociationDetailComposite(parent, SWT.NONE);
	if (object instanceof DataInput)
	composite.setShowToGroup(false);
	else
	composite.setShowFromGroup(false);
	return composite;
	}
	};
	if (object instanceof DataInput)
	dialog.setTitle("Edit Source for Input Parameter \""+ModelUtil.toCanonicalString(name)+"\"");
	else
	dialog.setTitle("Edit Destination for Output Parameter \""+ModelUtil.toCanonicalString(name)+"\"");
	dialog.setCompositeFactory(factory);
	if (dialog.open() == Window.OK) {
	// this just forces an update of the editor text field
	setValue(object.eGet(feature));
	}
	}

	};

	/**
	* @param section
	*/
	public JbpmTaskDetailComposite(AbstractBpmn2PropertySection section) {
	super(section);
	}

	public JbpmTaskDetailComposite(Composite parent, int style) {
	super(parent, style);
	}

	@Override
	public void cleanBindings() {
	super.cleanBindings();
	}

	@Override
	protected boolean isModelObjectEnabled(String className, String featureName) {
	if ("DataInput".equals(className)) //$NON-NLS-1$
	return true;
	return super.isModelObjectEnabled(className, featureName);
	}

	@Override
	public void createBindings(EObject be) {
	createInputParameterBindings((Task)be);
	super.createBindings(be);
	}

	/**
	* Create Object Editors for each of the Task's input parameters (DataInputs) that are
	* defined in the extension plugin.xml
	*
	* The mappings for these parameters are simply text expressions and will be rendered
	* as individual editable fields on the Task property tab instead of being included in
	* the I/O Parameters list.
	*
	* @param task
	*/
	protected void createInputParameterBindings(final Task task) {
	// Does the WID for this Task define a Work Item Editor dialog?
	// If so, do not display the WID parameters in this Property tab.
	boolean hasWorkItemEditor = false;
	final IFeatureProvider fp = getDiagramEditor().getDiagramTypeProvider().getFeatureProvider();
	final PictogramElement pe = fp.getPictogramElementForBusinessObject(task);
	final CustomContext cc = new CustomContext(new PictogramElement[] { pe });
	for (ICustomFeature cf : fp.getCustomFeatures(cc)) {
	if (cf.isAvailable(cc) && cf.canExecute(cc) && cf instanceof ConfigureWorkItemFeature) {
	hasWorkItemEditor = true;
	break;
	}
	}
	if (hasWorkItemEditor) {
	// TODO:
	// 1. create a New Work Item Editor wizard that copies the required
	// java interfaces and a sample implementation into the user's
	// java project.
	// 2. hook the ButtonObjectEditor into an action that pops up
	// the Work Item Editor.
	ButtonObjectEditor button = new ButtonObjectEditor(this, task, null) {
	@Override
	protected void buttonClicked() {
	for (ICustomFeature cf : fp.getCustomFeatures(cc)) {
	if (cf instanceof ConfigureWorkItemFeature) {
	cf.execute(cc);
	break;
	}
	}
	}
	};
	button.createControl(this.getAttributesParent(), "Edit Work Item Parameters");
	return;
	}

	// Get the Model Extension Descriptor for this Custom Task.
	// This will contain the Data Inputs and Outputs that were
	// defined for the Custom Task either in the plugin.xml
	// or by way of Work Item Definition files contained in
	// the project or the project's classpath.
	ModelExtensionDescriptor med = null;
	ExtendedPropertiesAdapter<?> adapter = ExtendedPropertiesAdapter.adapt(task);
	if (adapter!=null) {
	// look for it in the property adapter first
	med = adapter.getProperty(ModelExtensionDescriptor.class);
	}

	if (med==null) {
	// not found? get the Custom Task ID from the Task object
	String id = CustomElementFeatureContainer.findId(task);
	if (id!=null) {
	// and look it up in the Target Runtime's list of
	// Custom Task Descriptors
	TargetRuntime rt = TargetRuntime.getRuntime(task);
	med = rt.getCustomTask(id);
	}
	}

	if (med!=null) {
	// This Task object has additional properties defined either by way of the
	// <modelExtension> defined in the plugin.xml or in Work Item Definitions.
	// Check if any of the extension properties extend the DataInputs or DataOutputs
	// (i.e. the I/O Parameter mappings) and create Object Editors for them.
	// If the Task does not define these parameter mappings, create temporary objects
	// for the editors (these will go away if they are not touched by the user)
	InputOutputSpecification ioSpec = task.getIoSpecification();
	if (ioSpec==null) {
	ioSpec = createModelObject(InputOutputSpecification.class);
	InsertionAdapter.add(task,
	PACKAGE.getActivity_IoSpecification(),
	ioSpec);
	}

	List<Property> props = med.getProperties("ioSpecification/dataInputs/name"); //$NON-NLS-1$
	for (Property property : props) {

	// this will become the label for the Object Editor
	final String name = property.getFirstStringValue();
	// the input parameter
	ItemAwareElement parameter = createInputOutputParameter(task, ioSpec, name, true);

	// create a read-only text field and object editor button for this parameter
	DataInputOutputEditor editor = new DataInputOutputEditor(task, parameter);
	editor.createControl(getAttributesParent(),ModelUtil.toCanonicalString(name));
	}

	props = med.getProperties("ioSpecification/dataOutputs/name"); //$NON-NLS-1$
	for (Property property : props) {

	// this will become the label for the Object Editor
	final String name = property.getFirstStringValue();
	// the input parameter
	ItemAwareElement parameter = createInputOutputParameter(task, ioSpec, name, false);

	// create a read-only text field and object editor button for this parameter
	DataInputOutputEditor editor = new DataInputOutputEditor(task, parameter);
	editor.createControl(getAttributesParent(),ModelUtil.toCanonicalString(name));
	}
	}
	}

	private ItemAwareElement createInputOutputParameter(Task task, InputOutputSpecification ioSpec, String name, boolean isInput) {
	Definitions definitions = ModelUtil.getDefinitions(task);

	ItemAwareElement parameter = null;
	DataAssociation association = null;
	if (isInput) {
	for (DataInput input : ioSpec.getDataInputs()) {
	if (name.equals(input.getName())) {
	// this is the one!
	parameter = input;
	for (DataAssociation da : task.getDataInputAssociations()) {
	if (da.getTargetRef() == input) {
	association = da;
	break;
	}
	}
	break;
	}
	}
	}
	else {
	for (DataOutput output : ioSpec.getDataOutputs()) {
	if (name.equals(output.getName())) {
	// this is the one!
	parameter = output;
	for (DataAssociation da : task.getDataOutputAssociations()) {
	for (ItemAwareElement e : da.getSourceRef()) {
	if (e == output) {
	association = da;
	break;
	}
	}
	if (association!=null)
	break;
	}
	break;
	}
	}
	}
	if (parameter!=null)
	return parameter;

	ItemDefinition itemDef = createModelObject(ItemDefinition.class);
	itemDef.setItemKind(ItemKind.INFORMATION);
	itemDef.setStructureRef( ModelUtil.createStringWrapper("Object") ); //$NON-NLS-1$
	InsertionAdapter.add(definitions,
	PACKAGE.getDefinitions_RootElements(),
	itemDef);

	parameter = createModelObject(isInput ? DataInput.class : DataOutput.class);
	if (isInput)
	((DataInput)parameter).setName(name);
	else
	((DataOutput)parameter).setName(name);

	parameter.setItemSubjectRef(itemDef);
	InsertionAdapter.add(ioSpec,
	isInput ? PACKAGE.getInputOutputSpecification_DataInputs() : PACKAGE.getInputOutputSpecification_DataOutputs(),
	parameter);

	// create the InputSet if needed
	if (isInput) {
	InputSet inputSet = null;
	if (ioSpec.getInputSets().size()==0) {
	inputSet = createModelObject(InputSet.class);
	InsertionAdapter.add(ioSpec,
	PACKAGE.getInputOutputSpecification_InputSets(),
	inputSet);
	}
	else
	inputSet = ioSpec.getInputSets().get(0);
	// add the parameter to the InputSet also
	InsertionAdapter.add(inputSet,
	PACKAGE.getInputSet_DataInputRefs(),
	parameter);
	}
	else {
	OutputSet outputSet = null;
	if (ioSpec.getOutputSets().size()==0) {
	outputSet = createModelObject(OutputSet.class);
	InsertionAdapter.add(ioSpec,
	PACKAGE.getInputOutputSpecification_OutputSets(),
	outputSet);
	}
	else
	outputSet = ioSpec.getOutputSets().get(0);
	// add the parameter to the OutputSet also
	InsertionAdapter.add(outputSet,
	PACKAGE.getOutputSet_DataOutputRefs(),
	parameter);
	}


	return parameter;
	}

	@Override
	protected AbstractListComposite bindList(EObject object, EStructuralFeature feature, EClass listItemClass) {
	if (feature.getName().equals("resources")) { //$NON-NLS-1$
	if (isModelObjectEnabled(object.eClass(), feature)) {
	ActorsListComposite actors = new ActorsListComposite(this);
	actors.bindList(object, feature);
	actors.setTitle(Messages.JbpmTaskDetailComposite_Actors_Title);
	return actors;
	}
	return null;
	}
	else
	return super.bindList(object, feature, listItemClass);
	}

	public class ActorsNameTableColumn extends TableColumn {
	public ActorsNameTableColumn(EObject object) {
	super(object, PACKAGE.getFormalExpression_Body());
	setHeaderText(Messages.JbpmTaskDetailComposite_Actors_Name_Column);
	setEditable(true);
	}
	}

	public class ActorsListComposite extends DefaultListComposite {

	public ActorsListComposite(Composite parent) {
	super(parent, AbstractListComposite.DEFAULT_STYLE);
	}

	public EClass getListItemClass(EObject object, EStructuralFeature feature) {
	return PACKAGE.getFormalExpression();
	}

	@Override
	public ListCompositeColumnProvider getColumnProvider(EObject object, EStructuralFeature feature) {
	if (columnProvider==null) {
	columnProvider = new ListCompositeColumnProvider(this);
	columnProvider.add( new ActorsNameTableColumn(object) );
	}
	return columnProvider;
	}

	public ListCompositeContentProvider getContentProvider(EObject object, EStructuralFeature feature, EList<EObject>list) {
	if (contentProvider==null) {
	contentProvider = new ListCompositeContentProvider(this, object, feature, list) {
	@Override
	public Object[] getElements(Object inputElement) {
	List<Object> elements = new ArrayList<Object>();
	Task task = (Task)object;
	for (ResourceRole owner : task.getResources()) {
	ResourceAssignmentExpression resourceAssignment = owner.getResourceAssignmentExpression();
	if (resourceAssignment!=null) {
	Expression expression = resourceAssignment.getExpression();
	if (expression instanceof FormalExpression) {
	elements.add(expression);
	}
	}
	}
	return elements.toArray();
	}
	};
	}
	return contentProvider;
	}

	public AbstractDetailComposite createDetailComposite(Class eClass, Composite parent, int style) {
	AbstractDetailComposite composite = new DefaultDetailComposite(parent, style) {
	@Override
	protected Composite bindFeature(EObject be, EStructuralFeature feature, EClass eItemClass) {
	Composite composite = null;
	if (feature!=null && "body".equals(feature.getName())) { //$NON-NLS-1$
	super.bindFeature(be, feature, eItemClass);
	}
	return composite;
	}

	@Override
	protected void bindAttribute(Composite parent, EObject object, EAttribute attribute, String label) {
	TextObjectEditor editor = new TextObjectEditor(this,object,attribute);
	editor.setMultiLine(false);
	editor.createControl(parent,Messages.JbpmTaskDetailComposite_Actors_Name_Column);
	}
	};
	return composite;
	}

	protected EObject addListItem(EObject object, EStructuralFeature feature) {
	Task task = (Task)object;

	FormalExpression expression = createModelObject(FormalExpression.class);

	ResourceAssignmentExpression resourceAssignment = createModelObject(ResourceAssignmentExpression.class);
	resourceAssignment.setExpression(expression);
	PotentialOwner owner = createModelObject(PotentialOwner.class);
	owner.setResourceAssignmentExpression(resourceAssignment);
	task.getResources().add(owner);

	expression.setBody(Messages.JbpmTaskDetailComposite_Actors_Label);

	return expression;
	}

	protected Object removeListItem(EObject object, EStructuralFeature feature, int index) {
	Task task = (Task)object;
	int size = task.getResources().size();
	if (index>=0 && index<size) {
	task.getResources().remove(index);
	}
	return null;
	}

	@Override
	protected Object moveListItemUp(EObject object, EStructuralFeature feature, int index) {
	Task task = (Task)object;
	int size = task.getResources().size();
	if (index>0 && index<size) {
	ResourceRole owner = task.getResources().remove(index);
	task.getResources().add(index-1, owner);
	return owner;
	}
	return null;
	}

	@Override
	protected Object moveListItemDown(EObject object, EStructuralFeature feature, int index) {
	Task task = (Task)object;
	int size = task.getResources().size();
	if (index>=0 && index<size-1) {
	ResourceRole owner = task.getResources().remove(index);
	task.getResources().add(index, owner);
	return owner;
	}
	return null;
	}
	}
	}