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.http; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; 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.runtime.Status; import org.eclipse.emf.ecore.EObject; import org.eclipse.emf.edit.domain.AdapterFactoryEditingDomain; import org.eclipse.emf.edit.domain.EditingDomain; import org.eclipse.jface.databinding.fieldassist.ControlDecorationSupport; import org.eclipse.jface.databinding.swt.SWTObservables; import org.eclipse.jface.databinding.viewers.ViewersObservables; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.ComboViewer; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.soa.sca.sca1_1.model.sca.Binding; import org.eclipse.soa.sca.sca1_1.model.sca.Contract; import org.eclipse.soa.sca.sca1_1.model.sca.Reference; import org.eclipse.soa.sca.sca1_1.model.sca.ScaPackage; import org.eclipse.soa.sca.sca1_1.model.sca.Service; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.forms.widgets.FormToolkit; import org.switchyard.tools.models.switchyard1_0.http.HTTPBindingType; import org.switchyard.tools.models.switchyard1_0.http.HttpPackage; import org.switchyard.tools.models.switchyard1_0.switchyard.SwitchYardType; import org.switchyard.tools.ui.editor.Messages; import org.switchyard.tools.ui.editor.databinding.EMFUpdateValueStrategyNullForEmptyString; import org.switchyard.tools.ui.editor.databinding.EscapedPropertyIntegerValidator; 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.databinding.URLValidator; import org.switchyard.tools.ui.editor.diagram.binding.AbstractSYBindingComposite; import org.switchyard.tools.ui.editor.diagram.binding.OperationSelectorComposite; /** * @author bfitzpat * */ public class HttpBindingComposite extends AbstractSYBindingComposite { private Composite _panel; private Text _nameText; private Text _mAddressURLText; private ComboViewer _methodCombo; private Text _contentTypeText; private Text _contextPathText = null; private HTTPBindingType _binding = null; private OperationSelectorComposite _opSelectorComposite; private Text _requestTimeoutText = null; private WritableValue _bindingValue; HttpBindingComposite(FormToolkit toolkit) { super(toolkit); } @Override public String getTitle() { return Messages.title_httpBindingDetails; } @Override public String getDescription() { return Messages.description_httpBindingDetails; } @Override public void createContents(Composite parent, int style, DataBindingContext context) { _panel = new Composite(parent, style); _panel.setLayout(new FillLayout()); getHttpControl(_panel); if (getTargetObject() != null && getTargetObject() instanceof Service) { if (_opSelectorComposite != null && !_opSelectorComposite.isDisposed()) { _opSelectorComposite.setTargetObject((EObject) getTargetObject()); } } bindControls(context); } private Control getHttpControl(Composite tabFolder) { Composite composite = new Composite(tabFolder, SWT.NONE); GridLayout gl = new GridLayout(2, false); composite.setLayout(gl); _nameText = createLabelAndText(composite, Messages.label_name); if (getTargetObject() instanceof Service) { _contextPathText = createLabelAndText(composite, Messages.label_contextPath); // _contextPathText.setEnabled(canEdit()); _opSelectorComposite = new OperationSelectorComposite(composite, SWT.NONE, this); _opSelectorComposite.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false, 2, 1)); _opSelectorComposite.setLayout(new GridLayout(2, false)); _opSelectorComposite.addChangeListener(new ChangeListener() { @Override public void stateChanged(ChangeEvent e) { handleModify(_opSelectorComposite); } }); _opSelectorComposite.setTargetObject((EObject) getTargetObject()); } if (getTargetObject() instanceof Reference) { _mAddressURLText = createLabelAndText(composite, Messages.label_address); _methodCombo = createLabelAndComboViewer(composite, Messages.label_method, false); _methodCombo.setContentProvider(ArrayContentProvider.getInstance()); _methodCombo.setLabelProvider(new LabelProvider()); String[] methods = new String[] { "GET", "POST", "PUT", "DELETE", "HEAD", "OPTIONS", "TRACE", "CONNECT" }; _methodCombo.setInput(methods); _contentTypeText = createLabelAndText(composite, Messages.label_contentType); _requestTimeoutText = createLabelAndText(composite, Messages.label_requestTimeout); } return composite; } protected void handleModify(Control control) { // at this point, this is the only control we can't do with strict // databinding if (control.equals(_opSelectorComposite)) { fireChangedEvent(_opSelectorComposite); } setHasChanged(false); setDidSomething(true); } @Override public void setTargetObject(EObject target) { super.setTargetObject(target); if (_opSelectorComposite != null && !_opSelectorComposite.isDisposed()) { _opSelectorComposite.setTargetObject(target); } } /** * @return panel */ public Composite getPanel() { return _panel; } /** * @param switchYardBindingType binding */ public void setBinding(Binding switchYardBindingType) { super.setBinding(switchYardBindingType); if (switchYardBindingType instanceof HTTPBindingType) { _binding = (HTTPBindingType) switchYardBindingType; _bindingValue.setValue(_binding); // refresh the operation selector control if (_opSelectorComposite != null && !_opSelectorComposite.isDisposed() && getTargetObject() != null) { _opSelectorComposite.setTargetObject(getTargetObject()); } if (_opSelectorComposite != null && !_opSelectorComposite.isDisposed()) { _opSelectorComposite.setBinding(_binding); } // Set the default of the context path to be the name of the root switchyard if unset if (_binding.getContextPath() == null && _contextPathText != null && !_contextPathText.isDisposed()) { if (getTargetObject() != null && getTargetObject() instanceof Contract) { Contract contract = (Contract) getTargetObject(); if (contract.eContainer() != null && contract.eContainer() instanceof org.eclipse.soa.sca.sca1_1.model.sca.Composite) { org.eclipse.soa.sca.sca1_1.model.sca.Composite composite = (org.eclipse.soa.sca.sca1_1.model.sca.Composite) contract .eContainer(); if (composite.eContainer() != null && composite.eContainer() instanceof SwitchYardType) { SwitchYardType rootSwitchYard = (SwitchYardType) composite.eContainer(); if (rootSwitchYard.getName() != null) { this._contextPathText.setText(rootSwitchYard.getName()); // make sure a notify event gets sent, to update the binding _contextPathText.notifyListeners(SWT.Modify, null); // simulate "ENTER" to commit the change _contextPathText.notifyListeners(SWT.DefaultSelection, null); _contextPathText.setFocus(); } } } } } } else { _bindingValue.setValue(null); } } protected void handleUndo(Control control) { if (_binding != null) { super.handleUndo(control); } } private void bindControls(final DataBindingContext context) { final EditingDomain domain = AdapterFactoryEditingDomain.getEditingDomainFor(getTargetObject()); final Realm realm = SWTObservables.getRealm(_nameText.getDisplay()); _bindingValue = new WritableValue(realm, null, HTTPBindingType.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("HTTP 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("HTTP binding name should not be empty", Status.WARNING)), new UpdateValueStrategy(UpdateValueStrategy.POLICY_NEVER)); ControlDecorationSupport.create(SWTValueUpdater.attach(binding), SWT.TOP | SWT.LEFT); if (getTargetObject() instanceof Service) { if (_opSelectorComposite != null) { _opSelectorComposite.bindControls(domain, context); } binding = context.bindValue(SWTObservables.observeText(_contextPathText, new int[] { SWT.Modify }), ObservablesUtil.observeDetailValue(domain, _bindingValue, HttpPackage.Literals.HTTP_BINDING_TYPE__CONTEXT_PATH), new EMFUpdateValueStrategyNullForEmptyString(null, UpdateValueStrategy.POLICY_CONVERT), null); ControlDecorationSupport.create(SWTValueUpdater.attach(binding), SWT.TOP | SWT.LEFT); } else if (getTargetObject() instanceof Reference) { binding = context.bindValue(ViewersObservables.observeSingleSelection(_methodCombo), ObservablesUtil .observeDetailValue(domain, _bindingValue, HttpPackage.Literals.HTTP_BINDING_TYPE__METHOD)); ControlDecorationSupport.create(SWTValueUpdater.attach(binding), SWT.TOP | SWT.LEFT); binding = context.bindValue(SWTObservables.observeText(_mAddressURLText, new int[] { SWT.Modify }), ObservablesUtil.observeDetailValue(domain, _bindingValue, HttpPackage.Literals.HTTP_BINDING_TYPE__ADDRESS), new EMFUpdateValueStrategyNullForEmptyString(null, UpdateValueStrategy.POLICY_CONVERT), null); // TODO: Validate the URL to make sure it's ok ControlDecorationSupport.create(SWTValueUpdater.attach(binding), SWT.TOP | SWT.LEFT); binding = context.bindValue(SWTObservables.observeText(_contentTypeText, new int[] { SWT.Modify }), ObservablesUtil.observeDetailValue(domain, _bindingValue, HttpPackage.Literals.HTTP_BINDING_TYPE__CONTENT_TYPE), new EMFUpdateValueStrategyNullForEmptyString(null, UpdateValueStrategy.POLICY_CONVERT), null); ControlDecorationSupport.create(SWTValueUpdater.attach(binding), SWT.TOP | SWT.LEFT); binding = context.bindValue(SWTObservables.observeText(_requestTimeoutText, new int[] { SWT.Modify }), ObservablesUtil.observeDetailValue(domain, _bindingValue, HttpPackage.Literals.HTTP_BINDING_TYPE__TIMEOUT), new EMFUpdateValueStrategyNullForEmptyString("", UpdateValueStrategy.POLICY_CONVERT) .setAfterConvertValidator(new EscapedPropertyIntegerValidator( "Request Timeout must be a valid numeric value or follow the pattern for escaped properties (i.e. '${propName}').")), null); ControlDecorationSupport.create(SWTValueUpdater.attach(binding), SWT.TOP | SWT.LEFT); } } /* (non-Javadoc) * @see org.switchyard.tools.ui.editor.diagram.shared.AbstractSwitchyardComposite#dispose() */ @Override public void dispose() { _bindingValue.dispose(); super.dispose(); } }