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.sql; 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.soa.sca.sca1_1.model.sca.Binding; 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.camel.sql.CamelSqlBindingType; import org.switchyard.tools.models.switchyard1_0.camel.sql.SqlPackage; import org.switchyard.tools.ui.editor.Messages; import org.switchyard.tools.ui.editor.databinding.EMFUpdateValueStrategyNullForEmptyString; import org.switchyard.tools.ui.editor.databinding.EscapedPropertyLongValidator; 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.diagram.binding.OperationSelectorComposite; /** * @author bfitzpat * */ public class CamelSQLComposite extends AbstractSYBindingComposite { private Composite _panel; private CamelSqlBindingType _binding = null; private Text _nameText; private Text _queryText; private Text _dataSourceRefText; private Text _placeholderText; private OperationSelectorComposite _opSelectorComposite; private Text _periodText; private Text _initialDelayText; private WritableValue _bindingValue; CamelSQLComposite(FormToolkit toolkit) { super(toolkit); } @Override public String getTitle() { return Messages.title_sqlBindingDetails; } @Override public String getDescription() { return Messages.description_sqlBindingDetails; } @Override public void setBinding(Binding impl) { super.setBinding(impl); if (impl instanceof CamelSqlBindingType) { this._binding = (CamelSqlBindingType) impl; _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); } } else { _bindingValue.setValue(null); } } @Override public void setTargetObject(EObject target) { super.setTargetObject(target); if (_opSelectorComposite != null && !_opSelectorComposite.isDisposed()) { _opSelectorComposite.setTargetObject((EObject) target); } } @Override public void createContents(Composite parent, int style, DataBindingContext context) { _panel = new Composite(parent, style); _panel.setLayout(new FillLayout()); getSQLTabControl(_panel); if (getTargetObject() != null && getTargetObject() instanceof Service) { if (_opSelectorComposite != null && !_opSelectorComposite.isDisposed()) { _opSelectorComposite.setTargetObject((EObject) getTargetObject()); } } bindControls(context); } private Control getSQLTabControl(Composite tabFolder) { Composite composite = new Composite(tabFolder, SWT.NONE); GridLayout gl = new GridLayout(2, false); composite.setLayout(gl); _nameText = createLabelAndText(composite, Messages.label_name); _queryText = createLabelAndText(composite, Messages.label_queryStar); _dataSourceRefText = createLabelAndText(composite, Messages.label_dataSourceStar); _placeholderText = createLabelAndText(composite, "Placeholder:"); if (getTargetObject() instanceof Service) { _periodText = createLabelAndText(composite, Messages.label_periodStar); _initialDelayText = createLabelAndText(composite, Messages.label_initialDelay); } if (getTargetObject() instanceof Service) { _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); } }); } return composite; } @Override public Composite getPanel() { return this._panel; } protected void handleModify(final 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); } 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, CamelSqlBindingType.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("SQL 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("SQL 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(_queryText, new int[] { SWT.Modify }), ObservablesUtil.observeDetailValue(domain, _bindingValue, SqlPackage.Literals.CAMEL_SQL_BINDING_TYPE__QUERY), new EMFUpdateValueStrategyNullForEmptyString(null, UpdateValueStrategy.POLICY_CONVERT) .setAfterConvertValidator(new StringEmptyValidator(Messages.error_emptyQuery)), null); ControlDecorationSupport.create(SWTValueUpdater.attach(binding), SWT.TOP | SWT.LEFT); binding = context.bindValue(SWTObservables.observeText(_dataSourceRefText, new int[] { SWT.Modify }), ObservablesUtil.observeDetailValue(domain, _bindingValue, SqlPackage.Literals.CAMEL_SQL_BINDING_TYPE__DATA_SOURCE_REF), new EMFUpdateValueStrategyNullForEmptyString(null, UpdateValueStrategy.POLICY_CONVERT) .setAfterConvertValidator( new StringEmptyValidator(Messages.error_emptyDataSourceReference)), null); ControlDecorationSupport.create(SWTValueUpdater.attach(binding), SWT.TOP | SWT.LEFT); binding = context.bindValue(SWTObservables.observeText(_placeholderText, new int[] { SWT.Modify }), ObservablesUtil.observeDetailValue(domain, _bindingValue, SqlPackage.Literals.CAMEL_SQL_BINDING_TYPE__PLACEHOLDER), new EMFUpdateValueStrategyNullForEmptyString("", UpdateValueStrategy.POLICY_CONVERT), null); ControlDecorationSupport.create(SWTValueUpdater.attach(binding), SWT.TOP | SWT.LEFT); if (_periodText != null && !_periodText.isDisposed()) { binding = context.bindValue(SWTObservables.observeText(_periodText, new int[] { SWT.Modify }), ObservablesUtil.observeDetailValue(domain, _bindingValue, SqlPackage.Literals.CAMEL_SQL_BINDING_TYPE__PERIOD), new EMFUpdateValueStrategyNullForEmptyString(null, UpdateValueStrategy.POLICY_CONVERT) .setAfterConvertValidator(new StringEmptyValidator("Period may not be empty.")), null); ControlDecorationSupport.create(SWTValueUpdater.attach(binding), SWT.TOP | SWT.LEFT); } if (_initialDelayText != null && !_initialDelayText.isDisposed()) { binding = context.bindValue(SWTObservables.observeText(_initialDelayText, new int[] { SWT.Modify }), ObservablesUtil.observeDetailValue(domain, _bindingValue, SqlPackage.Literals.CAMEL_SQL_BINDING_TYPE__INITIAL_DELAY), new EMFUpdateValueStrategyNullForEmptyString("", UpdateValueStrategy.POLICY_CONVERT) .setAfterConvertValidator(new EscapedPropertyLongValidator( "Initial Delay 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); } if (_opSelectorComposite != null && !_opSelectorComposite.isDisposed()) { _opSelectorComposite.bindControls(domain, context); } } /* (non-Javadoc) * @see org.switchyard.tools.ui.editor.diagram.shared.AbstractSwitchyardComposite#dispose() */ @Override public void dispose() { _bindingValue.dispose(); super.dispose(); } }