Java tutorial
/******************************************************************************* * 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 ******************************************************************************/ package org.eclipse.bpmn2.modeler.ui.property; import java.io.IOException; import java.util.Arrays; import java.util.Collection; import java.util.List; import org.eclipse.bpmn2.GatewayDirection; import org.eclipse.bpmn2.Participant; import org.eclipse.bpmn2.di.BPMNShape; import org.eclipse.bpmn2.di.BpmnDiPackage; import org.eclipse.bpmn2.modeler.core.Bpmn2Preferences; import org.eclipse.bpmn2.modeler.core.ModelHandler; import org.eclipse.bpmn2.modeler.core.ModelHandlerLocator; import org.eclipse.bpmn2.modeler.ui.Activator; import org.eclipse.bpmn2.provider.Bpmn2ItemProviderAdapterFactory; import org.eclipse.emf.common.util.EList; import org.eclipse.emf.common.util.Enumerator; import org.eclipse.emf.ecore.EAttribute; import org.eclipse.emf.ecore.EObject; import org.eclipse.emf.ecore.EReference; import org.eclipse.emf.ecore.EStructuralFeature; import org.eclipse.emf.edit.provider.IItemPropertyDescriptor; import org.eclipse.emf.edit.provider.ItemProviderAdapter; import org.eclipse.emf.edit.ui.celleditor.FeatureEditorDialog; import org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider; import org.eclipse.emf.transaction.RecordingCommand; import org.eclipse.emf.transaction.TransactionalEditingDomain; import org.eclipse.graphiti.mm.pictograms.Diagram; import org.eclipse.jface.viewers.ComboViewer; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.window.Window; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Text; public class MainPropertiesComposite extends AbstractBpmn2PropertiesComposite { private final AdapterFactoryLabelProvider LABEL_PROVIDER = new AdapterFactoryLabelProvider(ADAPTER_FACTORY); private ModelHandler modelHandler; private BPMNShape shape; /** * Create the composite. * * @param parent * @param style */ public MainPropertiesComposite(Composite parent, int style) { super(parent, style); } @SuppressWarnings("restriction") @Override public void createBindings() { try { modelHandler = ModelHandlerLocator .getModelHandler(bpmn2Editor.getDiagramTypeProvider().getDiagram().eResource()); } catch (IOException e1) { Activator.showErrorWithLogging(e1); return; } ItemProviderAdapter itemProviderAdapter = (ItemProviderAdapter) new Bpmn2ItemProviderAdapterFactory() .adapt(be, ItemProviderAdapter.class); EList<EAttribute> eAllAttributes = be.eClass().getEAllAttributes(); Bpmn2Preferences preferences = Bpmn2Preferences.getPreferences(project); for (EAttribute a : eAllAttributes) { if (preferences.isEnabled(be.eClass(), a)) { IItemPropertyDescriptor propertyDescriptor = itemProviderAdapter.getPropertyDescriptor(be, a); if (String.class.equals(a.getEType().getInstanceClass())) { bind(a, createTextInput(propertyDescriptor.getDisplayName(be), propertyDescriptor.isMultiLine(be))); } else if (boolean.class.equals(a.getEType().getInstanceClass())) { bindBoolean(a, createBooleanInput(propertyDescriptor.getDisplayName(be))); } else if (int.class.equals(a.getEType().getInstanceClass())) { bindInt(a, createIntInput(propertyDescriptor.getDisplayName(be))); } else if (propertyDescriptor != null) { propertyDescriptor.getChoiceOfValues(be); createLabel(propertyDescriptor.getDisplayName(be)); createSingleItemEditor(a, be.eGet(a), propertyDescriptor.getChoiceOfValues(be)); } } } EList<EReference> eAllContainments = be.eClass().getEAllContainments(); for (EReference e : be.eClass().getEAllReferences()) { if (preferences.isEnabled(be.eClass(), e) && !eAllContainments.contains(e)) { IItemPropertyDescriptor propertyDescriptor = itemProviderAdapter.getPropertyDescriptor(be, e); bindReference(e, propertyDescriptor.getDisplayName(e)); } } if (be instanceof Participant) { Diagram diagram = bpmn2Editor.getDiagramTypeProvider().getDiagram(); if (shape != null && shape.getParticipantBandKind() != null) { bindBoolean(shape.eClass().getEStructuralFeature(BpmnDiPackage.BPMN_SHAPE__IS_MESSAGE_VISIBLE), createBooleanInput("Is Message Visible"), shape); } } } public void bindReference(final EReference reference, final String name) { Object eGet = be.eGet(reference); createLabel(name); if (eGet instanceof List) { createListEditor(reference, eGet); } else { createSingleItemEditor(reference, eGet, null); } } private void createListEditor(final EReference reference, Object eGet) { final Text text = new Text(this, SWT.BORDER); text.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1)); toolkit.adapt(text, true, true); widgets.add(text); Button editButton = new Button(this, SWT.NONE); editButton.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1)); editButton.setText("Edit ..."); toolkit.adapt(editButton, true, true); widgets.add(editButton); final List<EObject> refs = (List<EObject>) eGet; updateTextField(refs, text); SelectionAdapter editListener = new SelectionAdapter() { @SuppressWarnings("unchecked") @Override public void widgetSelected(SelectionEvent e) { List<EObject> l = null; if (modelHandler != null) { l = (List<EObject>) modelHandler.getAll(reference.getEType().getInstanceClass()); } FeatureEditorDialog featureEditorDialog = new FeatureEditorDialog(getShell(), LABEL_PROVIDER, be, reference, "Select elements", l); if (featureEditorDialog.open() == Window.OK) { updateEObject(refs, (EList<EObject>) featureEditorDialog.getResult()); updateTextField(refs, text); } } public void updateEObject(final List<EObject> refs, final EList<EObject> result) { TransactionalEditingDomain domain = bpmn2Editor.getEditingDomain(); domain.getCommandStack().execute(new RecordingCommand(domain) { @Override protected void doExecute() { if (result == null) { refs.clear(); return; } refs.retainAll(result); for (EObject di : result) { if (!refs.contains(di)) { refs.add(di); } } } }); } }; editButton.addSelectionListener(editListener); } private void createSingleItemEditor(final EStructuralFeature reference, Object eGet, Collection values) { final ComboViewer combo = new ComboViewer(this, SWT.BORDER); Combo c = combo.getCombo(); combo.setLabelProvider(LABEL_PROVIDER); c.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 2, 1)); toolkit.adapt(c, true, true); widgets.add(c); List<Object> l = null; if (values != null) { l = Arrays.asList(values.toArray()); } else if (modelHandler != null) { l = (List<Object>) modelHandler.getAll(reference.getEType().getInstanceClass()); } combo.add(""); combo.add(l.toArray()); if (eGet != null) { combo.setSelection(new StructuredSelection(eGet)); } combo.addSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent event) { ISelection selection = combo.getSelection(); if (selection instanceof StructuredSelection) { Object firstElement = ((StructuredSelection) selection).getFirstElement(); if (firstElement instanceof EObject) { updateEObject(firstElement); } else if (firstElement instanceof GatewayDirection) { updateGatewayDirection(firstElement); } else { updateEObject(null); } } } public void updateEObject(final Object result) { TransactionalEditingDomain domain = bpmn2Editor.getEditingDomain(); domain.getCommandStack().execute(new RecordingCommand(domain) { @Override protected void doExecute() { be.eSet(reference, result); } }); } public void updateGatewayDirection(final Object result) { TransactionalEditingDomain domain = bpmn2Editor.getEditingDomain(); domain.getCommandStack().execute(new RecordingCommand(domain) { @Override protected void doExecute() { GatewayDirection direction = (GatewayDirection) result; be.eSet(reference, direction); } }); } }); } private void updateTextField(final List<EObject> refs, Text text) { String listText = ""; if (refs != null) { for (int i = 0; i < refs.size() - 1; i++) { listText += LABEL_PROVIDER.getText(refs.get(i)) + ", "; } if (refs.size() > 0) { listText += LABEL_PROVIDER.getText(refs.get(refs.size() - 1)); } } text.setText(listText); } public void setShape(BPMNShape shape) { this.shape = shape; } }