Java tutorial
/* * ==================================================================== * * The ObjectStyle Group Software License, Version 1.0 * * Copyright (c) 2006 The ObjectStyle Group and individual authors of the * software. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * 3. The end-user documentation included with the redistribution, if any, must * include the following acknowlegement: "This product includes software * developed by the ObjectStyle Group (http://objectstyle.org/)." Alternately, * this acknowlegement may appear in the software itself, if and wherever such * third-party acknowlegements normally appear. * * 4. The names "ObjectStyle Group" and "Cayenne" must not be used to endorse or * promote products derived from this software without prior written permission. * For written permission, please contact andrus@objectstyle.org. * * 5. Products derived from this software may not be called "ObjectStyle" nor * may "ObjectStyle" appear in their names without prior written permission of * the ObjectStyle Group. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * OBJECTSTYLE GROUP OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ==================================================================== * * This software consists of voluntary contributions made by many individuals on * behalf of the ObjectStyle Group. For more information on the ObjectStyle * Group, please see <http://objectstyle.org/>. * */ package org.objectstyle.wolips.eomodeler.editors.relationship; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import org.eclipse.core.databinding.DataBindingContext; import org.eclipse.core.databinding.beans.BeansObservables; import org.eclipse.jface.databinding.swt.SWTObservables; import org.eclipse.jface.viewers.ComboViewer; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.layout.FormLayout; 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; import org.eclipse.ui.IWorkbenchPart; import org.eclipse.ui.views.properties.tabbed.AbstractPropertySection; import org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetPage; import org.objectstyle.wolips.baseforplugins.util.ComparisonUtils; import org.objectstyle.wolips.eomodeler.Activator; import org.objectstyle.wolips.eomodeler.Messages; import org.objectstyle.wolips.eomodeler.core.model.EODeleteRule; import org.objectstyle.wolips.eomodeler.core.model.EOEntity; import org.objectstyle.wolips.eomodeler.core.model.EOJoinSemantic; import org.objectstyle.wolips.eomodeler.core.model.EOModel; import org.objectstyle.wolips.eomodeler.core.model.EOModelGroup; import org.objectstyle.wolips.eomodeler.core.model.EORelationship; import org.objectstyle.wolips.eomodeler.core.model.EORelationshipPath; import org.objectstyle.wolips.eomodeler.editors.entity.EOEntityLabelProvider; import org.objectstyle.wolips.eomodeler.editors.entity.EOEntityListContentProvider; import org.objectstyle.wolips.eomodeler.utils.BooleanUpdateValueStrategy; import org.objectstyle.wolips.eomodeler.utils.ComboViewerBinding; import org.objectstyle.wolips.eomodeler.utils.FormUtils; import org.objectstyle.wolips.eomodeler.utils.UglyFocusHackWorkaroundListener; public class EORelationshipBasicEditorSection extends AbstractPropertySection { private EORelationship _relationship; private Text _nameText; private Text _definitionText; private Button _toOneButton; private Button _toManyButton; private Button _optionalButton; private Button _mandatoryButton; private JoinsTableEditor _joinsTableEditor; private ComboViewer _deleteRuleComboViewer; private ComboViewer _modelComboViewer; private ComboViewer _joinSemanticComboViewer; private ComboViewer _entityComboViewer; private JoinsListener _joinsListener; private DataBindingContext _bindingContext; private ComboViewerBinding _deleteRuleBinding; private ComboViewerBinding _joinSemanticBinding; private ComboViewerBinding _modelBinding; private ComboViewerBinding _entityBinding; private Button _classPropertyButton; public EORelationshipBasicEditorSection() { _joinsListener = new JoinsListener(); } @Override public boolean shouldUseExtraSpace() { return true; } public void createControls(Composite parent, TabbedPropertySheetPage tabbedPropertySheetPage) { super.createControls(parent, tabbedPropertySheetPage); Composite form = getWidgetFactory().createFlatFormComposite(parent); FormLayout formLayout = new FormLayout(); form.setLayout(formLayout); Composite topForm = FormUtils.createForm(getWidgetFactory(), form); getWidgetFactory().createCLabel(topForm, Messages.getString("EORelationship." + EORelationship.NAME), SWT.NONE); _nameText = new Text(topForm, SWT.BORDER); GridData nameFieldLayoutData = new GridData(GridData.FILL_HORIZONTAL); _nameText.setLayoutData(nameFieldLayoutData); UglyFocusHackWorkaroundListener.addListener(_nameText); getWidgetFactory().createCLabel(topForm, Messages.getString("EORelationship." + EORelationship.DEFINITION), SWT.NONE); _definitionText = new Text(topForm, SWT.BORDER); GridData definitionFieldLayoutData = new GridData(GridData.FILL_HORIZONTAL); _definitionText.setLayoutData(definitionFieldLayoutData); UglyFocusHackWorkaroundListener.addListener(_definitionText); getWidgetFactory().createCLabel(topForm, Messages.getString("EORelationship.settings"), SWT.NONE); Composite settingsComposite = new Composite(topForm, SWT.NONE); settingsComposite.setBackground(topForm.getBackground()); FillLayout settingsLayout = new FillLayout(SWT.HORIZONTAL); settingsLayout.spacing = 10; settingsComposite.setLayout(settingsLayout); GridData settingsLayoutData = new GridData(GridData.FILL_HORIZONTAL); settingsLayoutData.heightHint = 25; settingsComposite.setLayoutData(settingsLayoutData); _toManyButton = new Button(settingsComposite, SWT.TOGGLE | SWT.FLAT); _toManyButton.setToolTipText(Messages.getString("EORelationship." + EORelationship.TO_MANY)); _toManyButton.setImage(Activator.getDefault().getImageRegistry().get(Activator.TO_MANY_ICON)); _classPropertyButton = new Button(settingsComposite, SWT.TOGGLE | SWT.FLAT); _classPropertyButton.setToolTipText(Messages.getString("EORelationship." + EORelationship.CLASS_PROPERTY)); _classPropertyButton.setImage(Activator.getDefault().getImageRegistry().get(Activator.CLASS_PROPERTY_ICON)); _optionalButton = new Button(settingsComposite, SWT.TOGGLE | SWT.FLAT); _optionalButton.setToolTipText(Messages.getString("EORelationship." + EORelationship.OPTIONAL)); _optionalButton.setImage(Activator.getDefault().getImageRegistry().get(Activator.ALLOW_NULL_ICON)); // getWidgetFactory().createCLabel(topForm, Messages.getString("EORelationship.cardinality"), SWT.NONE); // Composite cardinalityComposite = getWidgetFactory().createPlainComposite(topForm, SWT.NONE); // GridLayout cardinalityLayout = new GridLayout(); // cardinalityLayout.numColumns = 2; // cardinalityLayout.makeColumnsEqualWidth = true; // cardinalityComposite.setLayout(cardinalityLayout); // _toOneButton = new Button(cardinalityComposite, SWT.RADIO); // _toOneButton.setText(Messages.getString("EORelationship.toOne")); // GridData toOneButtonLayoutData = new GridData(GridData.FILL_HORIZONTAL); // _toOneButton.setLayoutData(toOneButtonLayoutData); // _toManyButton = new Button(cardinalityComposite, SWT.RADIO); // _toManyButton.setText(Messages.getString("EORelationship.toMany")); // GridData toManyButtonLayoutData = new GridData(GridData.FILL_HORIZONTAL); // _toManyButton.setLayoutData(toManyButtonLayoutData); // GridData cardinalityCompositeLayoutData = new GridData(GridData.FILL_HORIZONTAL); // cardinalityComposite.setLayoutData(cardinalityCompositeLayoutData); // getWidgetFactory().createCLabel(topForm, Messages.getString("EORelationship.optionality"), SWT.NONE); // Composite optionalityComposite = getWidgetFactory().createPlainComposite(topForm, SWT.NONE); // GridLayout optionalityLayout = new GridLayout(); // optionalityLayout.numColumns = 2; // optionalityLayout.makeColumnsEqualWidth = true; // optionalityComposite.setLayout(optionalityLayout); // _optionalButton = new Button(optionalityComposite, SWT.RADIO); // _optionalButton.setText(Messages.getString("EORelationship.optional")); // GridData optionalButtonLayoutData = new GridData(GridData.FILL_HORIZONTAL); // _optionalButton.setLayoutData(optionalButtonLayoutData); // _mandatoryButton = new Button(optionalityComposite, SWT.RADIO); // _mandatoryButton.setText(Messages.getString("EORelationship.mandatory")); // GridData mandatoryButtonLayoutData = new GridData(GridData.FILL_HORIZONTAL); // _mandatoryButton.setLayoutData(mandatoryButtonLayoutData); // GridData optioanlityCompositeLayoutData = new GridData(GridData.FILL_HORIZONTAL); // optionalityComposite.setLayoutData(optioanlityCompositeLayoutData); getWidgetFactory().createCLabel(topForm, Messages.getString("EORelationship." + EORelationship.DELETE_RULE), SWT.NONE); Combo deleteRuleCombo = new Combo(topForm, SWT.BORDER | SWT.FLAT | SWT.READ_ONLY); _deleteRuleComboViewer = new ComboViewer(deleteRuleCombo); _deleteRuleComboViewer.setLabelProvider(new EODeleteRuleLabelProvider()); _deleteRuleComboViewer.setContentProvider(new EODeleteRuleContentProvider()); _deleteRuleComboViewer.setInput(EODeleteRule.DELETE_RULES); _deleteRuleComboViewer.setSelection(new StructuredSelection(EODeleteRule.NULLIFY)); GridData deleteRuleComboLayoutData = new GridData(GridData.FILL_HORIZONTAL); deleteRuleCombo.setLayoutData(deleteRuleComboLayoutData); getWidgetFactory().createCLabel(topForm, Messages.getString("EORelationship.model"), SWT.NONE); Combo modelCombo = new Combo(topForm, SWT.BORDER | SWT.FLAT | SWT.READ_ONLY); _modelComboViewer = new ComboViewer(modelCombo); _modelComboViewer.setLabelProvider(new EOModelLabelProvider()); _modelComboViewer.setContentProvider(new EOModelListContentProvider()); _modelComboViewer.addSelectionChangedListener(new ModelSelectionListener()); GridData modelRuleComboLayoutData = new GridData(GridData.FILL_HORIZONTAL); modelCombo.setLayoutData(modelRuleComboLayoutData); getWidgetFactory().createCLabel(topForm, Messages.getString("EORelationship." + EORelationship.DESTINATION), SWT.NONE); Combo entityCombo = new Combo(topForm, SWT.BORDER | SWT.FLAT | SWT.READ_ONLY); _entityComboViewer = new ComboViewer(entityCombo); _entityComboViewer.setLabelProvider(new EOEntityLabelProvider()); _entityComboViewer.setContentProvider(new EOEntityListContentProvider(false, true, false)); GridData entityComboLayoutData = new GridData(GridData.FILL_HORIZONTAL); entityCombo.setLayoutData(entityComboLayoutData); Combo joinSemanticCombo = new Combo(topForm, SWT.BORDER | SWT.FLAT | SWT.READ_ONLY); _joinSemanticComboViewer = new ComboViewer(joinSemanticCombo); _joinSemanticComboViewer.setLabelProvider(new EOJoinSemanticLabelProvider()); _joinSemanticComboViewer.setContentProvider(new EOJoinSemanticContentProvider()); _joinSemanticComboViewer.setInput(EOJoinSemantic.JOIN_SEMANTICS); _joinSemanticComboViewer.setSelection(new StructuredSelection(EOJoinSemantic.INNER)); GridData joinSemanticLayoutData = new GridData(GridData.FILL_HORIZONTAL); joinSemanticLayoutData.verticalAlignment = SWT.TOP; joinSemanticCombo.setLayoutData(joinSemanticLayoutData); _joinsTableEditor = new JoinsTableEditor(topForm, SWT.NONE); _joinsTableEditor.setBackground(topForm.getBackground()); GridData joinsTableLayoutData = new GridData(GridData.FILL_BOTH); _joinsTableEditor.setLayoutData(joinsTableLayoutData); } public void setInput(IWorkbenchPart part, ISelection selection) { if (ComparisonUtils.equals(selection, getSelection())) { return; } super.setInput(part, selection); EORelationship relationship = null; Object selectedObject = ((IStructuredSelection) selection).getFirstElement(); if (selectedObject instanceof EORelationship) { relationship = (EORelationship) selectedObject; } else if (selectedObject instanceof EORelationshipPath) { relationship = ((EORelationshipPath) selectedObject).getChildRelationship(); } if (!ComparisonUtils.equals(relationship, _relationship)) { disposeBindings(); _relationship = relationship; if (_relationship != null) { _relationship.addPropertyChangeListener(EORelationship.JOINS, _joinsListener); _relationship.addPropertyChangeListener(EORelationship.DEFINITION, _joinsListener); _joinsTableEditor.setRelationship(_relationship); _modelComboViewer.setInput(_relationship); _entityComboViewer.setInput(_relationship); EOEntity destinationEntity = _relationship.getDestination(); if (destinationEntity != null) { _modelComboViewer.setSelection(new StructuredSelection(destinationEntity.getModel())); } _bindingContext = new DataBindingContext(); _bindingContext.bindValue(SWTObservables.observeText(_nameText, SWT.Modify), BeansObservables.observeValue(_relationship, EORelationship.NAME), null, null); _bindingContext.bindValue(SWTObservables.observeText(_definitionText, SWT.Modify), BeansObservables.observeValue(_relationship, EORelationship.DEFINITION), null, null); //_bindingContext.bindValue(SWTObservables.observeSelection(_toOneButton), BeansObservables.observeValue(_relationship, EORelationship.TO_ONE), null, new BooleanUpdateValueStrategy()); _bindingContext.bindValue(SWTObservables.observeSelection(_toManyButton), BeansObservables.observeValue(_relationship, EORelationship.TO_MANY), null, new BooleanUpdateValueStrategy()); _bindingContext.bindValue(SWTObservables.observeSelection(_optionalButton), BeansObservables.observeValue(_relationship, EORelationship.OPTIONAL), null, new BooleanUpdateValueStrategy()); //_bindingContext.bindValue(SWTObservables.observeSelection(_mandatoryButton), BeansObservables.observeValue(_relationship, EORelationship.MANDATORY), null, new BooleanUpdateValueStrategy()); _bindingContext.bindValue(SWTObservables.observeSelection(_classPropertyButton), BeansObservables.observeValue(_relationship, EORelationship.CLASS_PROPERTY), null, new BooleanUpdateValueStrategy()); _deleteRuleBinding = new ComboViewerBinding(_deleteRuleComboViewer, _relationship, EORelationship.DELETE_RULE, null, null, null); _joinSemanticBinding = new ComboViewerBinding(_joinSemanticComboViewer, _relationship, EORelationship.JOIN_SEMANTIC, _relationship.getEntity().getModel().getModelGroup(), EOModelGroup.MODELS, null); _entityBinding = new ComboViewerBinding(_entityComboViewer, _relationship, EORelationship.DESTINATION, _relationship.getEntity().getModel(), EOModel.ENTITIES, null); // boolean flattened = myRelationship.isFlattened(); // myDefinitionLabel.setVisible(flattened); // myDefinitionText.setVisible(flattened); updateModelAndEntityCombosEnabled(); } } } protected void updateModelAndEntityCombosEnabled() { boolean joinsEnabled = !_relationship.isFlattened(); boolean hasJoins = _relationship.getJoins().size() != 0; boolean enabled = !hasJoins && joinsEnabled; _modelComboViewer.getCombo().setEnabled(enabled); _entityComboViewer.getCombo().setEnabled(enabled); //_joinSemanticComboViewer.getCombo().setEnabled(enabled); _definitionText.setEnabled(!hasJoins); } protected void updateEntityCombo() { IStructuredSelection selection = (IStructuredSelection) _modelComboViewer.getSelection(); EOModel selectedModel = (EOModel) selection.getFirstElement(); _entityComboViewer.setInput(selectedModel); } protected void disposeBindings() { if (_relationship != null) { _relationship.removePropertyChangeListener(EORelationship.JOINS, _joinsListener); _relationship.removePropertyChangeListener(EORelationship.DEFINITION, _joinsListener); } if (_bindingContext != null) { _bindingContext.dispose(); } if (_deleteRuleBinding != null) { _deleteRuleBinding.dispose(); } if (_joinSemanticBinding != null) { _joinSemanticBinding.dispose(); } if (_modelBinding != null) { _modelBinding.dispose(); } if (_entityBinding != null) { _entityBinding.dispose(); } if (_joinsTableEditor != null) { _joinsTableEditor.disposeBindings(); } } public void dispose() { super.dispose(); disposeBindings(); } protected class JoinsListener implements PropertyChangeListener { public void propertyChange(PropertyChangeEvent event) { EORelationshipBasicEditorSection.this.updateModelAndEntityCombosEnabled(); } } protected class ModelSelectionListener implements ISelectionChangedListener { public void selectionChanged(SelectionChangedEvent event) { EORelationshipBasicEditorSection.this.updateEntityCombo(); } } }