Java tutorial
/******************************************************************************* * Copyright (c) 2012-2014 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 bfitzpat ******************************************************************************/ package org.switchyard.tools.ui.editor.components.camel.jpa; import org.eclipse.core.databinding.DataBindingContext; import org.eclipse.core.databinding.UpdateValueStrategy; import org.eclipse.core.databinding.observable.Realm; import org.eclipse.core.databinding.observable.value.WritableValue; import org.eclipse.core.resources.IFile; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.Path; import org.eclipse.core.runtime.Status; import org.eclipse.emf.databinding.FeaturePath; import org.eclipse.emf.ecore.EObject; import org.eclipse.emf.ecore.resource.Resource; import org.eclipse.emf.edit.domain.AdapterFactoryEditingDomain; import org.eclipse.emf.edit.domain.EditingDomain; import org.eclipse.jdt.core.IJavaElement; import org.eclipse.jdt.core.IJavaProject; import org.eclipse.jdt.core.IType; import org.eclipse.jdt.core.JavaCore; import org.eclipse.jdt.core.JavaModelException; import org.eclipse.jdt.core.search.IJavaSearchScope; import org.eclipse.jdt.core.search.SearchEngine; import org.eclipse.jdt.ui.IJavaElementSearchConstants; import org.eclipse.jdt.ui.JavaUI; import org.eclipse.jface.databinding.fieldassist.ControlDecorationSupport; import org.eclipse.jface.databinding.swt.SWTObservables; import org.eclipse.soa.sca.sca1_1.model.sca.Binding; import org.eclipse.soa.sca.sca1_1.model.sca.ScaPackage; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.dialogs.SelectionDialog; import org.eclipse.ui.forms.widgets.FormToolkit; import org.switchyard.tools.models.switchyard1_0.camel.jpa.CamelJpaBindingType; import org.switchyard.tools.models.switchyard1_0.camel.jpa.JpaPackage; import org.switchyard.tools.ui.editor.Messages; import org.switchyard.tools.ui.editor.databinding.EMFUpdateValueStrategyNullForEmptyString; import org.switchyard.tools.ui.editor.databinding.ObservablesUtil; import org.switchyard.tools.ui.editor.databinding.SWTValueUpdater; import org.switchyard.tools.ui.editor.databinding.StringEmptyValidator; import org.switchyard.tools.ui.editor.diagram.binding.AbstractSYBindingComposite; import org.switchyard.tools.ui.editor.model.merge.MergedModelUtil; /** * @author bfitzpat * */ public class CamelJPAProducerComposite extends AbstractSYBindingComposite { private Composite _panel; private CamelJpaBindingType _binding = null; private Text _nameText; private Text _entityClassNameText; private Button _browseEntityClassButton; private Text _persistenceUnitText; private Text _transcationManagerText; private Button _flushOnSendCheckbox; private Button _usePersistCheckbox; private IJavaProject _project; private WritableValue _bindingValue; CamelJPAProducerComposite(FormToolkit toolkit) { super(toolkit); } @Override public String getTitle() { return Messages.title_jpaBindingDetails; } @Override public String getDescription() { return Messages.description_jpaBindingDetails; } @Override public void setBinding(Binding impl) { super.setBinding(impl); if (impl instanceof CamelJpaBindingType) { this._binding = (CamelJpaBindingType) impl; _bindingValue.setValue(_binding); final Resource resource = MergedModelUtil.getSwitchYard((EObject) getTargetObject()).eResource(); if (resource.getURI().isPlatformResource()) { final IFile file = ResourcesPlugin.getWorkspace().getRoot() .getFile(new Path(resource.getURI().toPlatformString(true))); if (file != null) { _project = JavaCore.create(file.getProject()); } } } else { _bindingValue.setValue(null); } } @Override public void createContents(Composite parent, int style, DataBindingContext context) { _panel = new Composite(parent, style); _panel.setLayout(new FillLayout()); getProducerTabControl(_panel); bindControls(context); } private Control getProducerTabControl(Composite tabFolder) { Composite composite = new Composite(tabFolder, SWT.NONE); GridLayout gl = new GridLayout(3, false); composite.setLayout(gl); _nameText = createLabelAndText(composite, Messages.label_name); _nameText.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false, 2, 1)); _entityClassNameText = createLabelAndText(composite, Messages.label_entityClassName); _browseEntityClassButton = new Button(composite, SWT.PUSH); _browseEntityClassButton.setText(Messages.button_browse); GridData btnGD = new GridData(); _browseEntityClassButton.setLayoutData(btnGD); _browseEntityClassButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent event) { String newClass = handleBrowse(_entityClassNameText.getText()); if (newClass != null) { setTextValueAndNotify(_entityClassNameText, newClass, true); } } }); _persistenceUnitText = createLabelAndText(composite, Messages.label_persistenceUnit); addGridData(_persistenceUnitText, 2, GridData.FILL_HORIZONTAL); _transcationManagerText = createLabelAndText(composite, Messages.label_transactionManager); addGridData(_transcationManagerText, 2, GridData.FILL_HORIZONTAL); Group producerGroup = new Group(composite, SWT.NONE); producerGroup.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false, 2, 1)); producerGroup.setLayout(new GridLayout(2, false)); producerGroup.setText(Messages.label_producerOptions); _flushOnSendCheckbox = createCheckbox(producerGroup, Messages.label_flushOnSend); _usePersistCheckbox = createCheckbox(producerGroup, Messages.label_usePersist); return composite; } @Override public Composite getPanel() { return this._panel; } protected void handleModify(final Control control) { setHasChanged(false); setDidSomething(true); } protected void handleUndo(Control control) { if (_binding != null) { super.handleUndo(control); } } private String handleBrowse(String filter) { IJavaSearchScope scope = null; if (_project == null) { scope = SearchEngine.createWorkspaceScope(); } else { scope = SearchEngine.createJavaSearchScope(new IJavaElement[] { _project }); } try { SelectionDialog dialog = JavaUI.createTypeDialog(Display.getCurrent().getActiveShell(), null, scope, IJavaElementSearchConstants.CONSIDER_CLASSES, false, filter.isEmpty() ? "* " : filter); //$NON-NLS-1$ if (dialog.open() == SelectionDialog.OK) { Object[] result = dialog.getResult(); if (result.length > 0 && result[0] instanceof IType) { return ((IType) result[0]).getFullyQualifiedName(); } } } catch (JavaModelException e) { e.printStackTrace(); } return null; } private void bindControls(final DataBindingContext context) { final EditingDomain domain = AdapterFactoryEditingDomain.getEditingDomainFor(getTargetObject()); final Realm realm = SWTObservables.getRealm(_nameText.getDisplay()); _bindingValue = new WritableValue(realm, null, CamelJpaBindingType.class); org.eclipse.core.databinding.Binding binding = context.bindValue( SWTObservables.observeText(_nameText, new int[] { SWT.Modify }), ObservablesUtil.observeDetailValue(domain, _bindingValue, ScaPackage.eINSTANCE.getBinding_Name()), new EMFUpdateValueStrategyNullForEmptyString(null, UpdateValueStrategy.POLICY_CONVERT) .setAfterConvertValidator( new StringEmptyValidator("JPA binding name should not be empty", Status.WARNING)), null); ControlDecorationSupport.create(SWTValueUpdater.attach(binding), SWT.TOP | SWT.LEFT); /* * we also want to bind the name field to the binding name. note that * the model to target updater is configured to NEVER update. we want * the camel binding name to be the definitive source for this field. */ binding = context.bindValue(SWTObservables.observeText(_nameText, new int[] { SWT.Modify }), ObservablesUtil.observeDetailValue(domain, _bindingValue, ScaPackage.eINSTANCE.getBinding_Name()), new EMFUpdateValueStrategyNullForEmptyString(null, UpdateValueStrategy.POLICY_CONVERT) .setAfterConvertValidator( new StringEmptyValidator("JPA binding name should not be empty", Status.WARNING)), new UpdateValueStrategy(UpdateValueStrategy.POLICY_NEVER)); ControlDecorationSupport.create(SWTValueUpdater.attach(binding), SWT.TOP | SWT.LEFT); binding = context.bindValue(SWTObservables.observeText(_entityClassNameText, new int[] { SWT.Modify }), ObservablesUtil.observeDetailValue(domain, _bindingValue, JpaPackage.Literals.CAMEL_JPA_BINDING_TYPE__ENTITY_CLASS_NAME), new EMFUpdateValueStrategyNullForEmptyString(null, UpdateValueStrategy.POLICY_CONVERT) .setAfterConvertValidator(new StringEmptyValidator(Messages.error_emptyEntityClassName)), null); ControlDecorationSupport.create(SWTValueUpdater.attach(binding), SWT.TOP | SWT.LEFT); binding = context.bindValue(SWTObservables.observeText(_persistenceUnitText, new int[] { SWT.Modify }), ObservablesUtil.observeDetailValue(domain, _bindingValue, JpaPackage.Literals.CAMEL_JPA_BINDING_TYPE__PERSISTENCE_UNIT), new EMFUpdateValueStrategyNullForEmptyString(null, UpdateValueStrategy.POLICY_CONVERT) .setAfterConvertValidator(new StringEmptyValidator(Messages.error_emptyPersistenceUnit)), null); ControlDecorationSupport.create(SWTValueUpdater.attach(binding), SWT.TOP | SWT.LEFT); binding = context.bindValue(SWTObservables.observeText(_transcationManagerText, new int[] { SWT.Modify }), ObservablesUtil.observeDetailValue(domain, _bindingValue, JpaPackage.Literals.CAMEL_JPA_BINDING_TYPE__TRANSACTION_MANAGER), new EMFUpdateValueStrategyNullForEmptyString(null, UpdateValueStrategy.POLICY_CONVERT), null); ControlDecorationSupport.create(SWTValueUpdater.attach(binding), SWT.TOP | SWT.LEFT); FeaturePath path = FeaturePath.fromList(JpaPackage.Literals.CAMEL_JPA_BINDING_TYPE__PRODUCE, JpaPackage.Literals.JPA_PRODUCER_TYPE__FLUSH_ON_SEND); binding = context.bindValue(SWTObservables.observeSelection(_flushOnSendCheckbox), ObservablesUtil.observeDetailValue(domain, _bindingValue, path), new EMFUpdateValueStrategyNullForEmptyString(null, UpdateValueStrategy.POLICY_CONVERT), null); ControlDecorationSupport.create(SWTValueUpdater.attach(binding), SWT.TOP | SWT.LEFT); path = FeaturePath.fromList(JpaPackage.Literals.CAMEL_JPA_BINDING_TYPE__PRODUCE, JpaPackage.Literals.JPA_PRODUCER_TYPE__USE_PERSIST); binding = context.bindValue(SWTObservables.observeSelection(_usePersistCheckbox), ObservablesUtil.observeDetailValue(domain, _bindingValue, path), new EMFUpdateValueStrategyNullForEmptyString(null, UpdateValueStrategy.POLICY_CONVERT), null); ControlDecorationSupport.create(SWTValueUpdater.attach(binding), SWT.TOP | SWT.LEFT); } }