Java tutorial
/** * Copyright (C) 2013 BonitaSoft S.A. * BonitaSoft, 32 rue Gustave Eiffel - 38000 Grenoble * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 2.0 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package org.bonitasoft.studio.condition.ui.expression; import java.util.ArrayList; import java.util.Arrays; import java.util.HashSet; import java.util.List; import java.util.Set; import org.bonitasoft.studio.common.emf.tools.ExpressionHelper; import org.bonitasoft.studio.common.emf.tools.ModelHelper; import org.bonitasoft.studio.common.jface.BonitaStudioFontRegistry; import org.bonitasoft.studio.common.log.BonitaStudioLog; import org.bonitasoft.studio.common.repository.RepositoryManager; import org.bonitasoft.studio.condition.conditionModel.ConditionModelPackage; import org.bonitasoft.studio.condition.conditionModel.Expression_ProcessRef; import org.bonitasoft.studio.condition.conditionModel.Operation_Compare; import org.bonitasoft.studio.condition.scoping.ConditionModelGlobalScopeProvider; import org.bonitasoft.studio.condition.ui.i18n.Messages; import org.bonitasoft.studio.condition.ui.internal.ConditionModelActivator; import org.bonitasoft.studio.expression.editor.ExpressionEditorPlugin; import org.bonitasoft.studio.expression.editor.constant.ConstantTypeLabelProvider; import org.bonitasoft.studio.expression.editor.constant.ExpressionReturnTypeContentProvider; import org.bonitasoft.studio.expression.editor.provider.ExpressionContentProvider; import org.bonitasoft.studio.expression.editor.provider.IExpressionEditor; import org.bonitasoft.studio.expression.editor.provider.SelectionAwareExpressionEditor; import org.bonitasoft.studio.expression.editor.viewer.ExpressionViewer; import org.bonitasoft.studio.expression.editor.viewer.SelectDependencyDialog; import org.bonitasoft.studio.model.expression.Expression; import org.bonitasoft.studio.model.expression.ExpressionPackage; import org.bonitasoft.studio.model.parameter.Parameter; import org.bonitasoft.studio.model.process.Data; import org.eclipse.core.databinding.UpdateValueStrategy; import org.eclipse.core.databinding.conversion.Converter; import org.eclipse.core.databinding.observable.value.IObservableValue; import org.eclipse.core.databinding.observable.value.IValueChangeListener; import org.eclipse.core.databinding.observable.value.ValueChangeEvent; import org.eclipse.emf.common.util.URI; import org.eclipse.emf.databinding.EMFDataBindingContext; import org.eclipse.emf.databinding.EMFObservables; import org.eclipse.emf.ecore.EObject; import org.eclipse.emf.ecore.resource.Resource; import org.eclipse.emf.ecore.resource.ResourceSet; import org.eclipse.emf.ecore.util.EcoreUtil; import org.eclipse.emf.edit.provider.ComposedAdapterFactory; import org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider; import org.eclipse.jface.databinding.fieldassist.ControlDecorationSupport; import org.eclipse.jface.databinding.swt.ISWTObservableValue; import org.eclipse.jface.databinding.swt.SWTObservables; import org.eclipse.jface.databinding.viewers.ViewersObservables; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.layout.GridLayoutFactory; import org.eclipse.jface.text.ITextListener; import org.eclipse.jface.text.TextEvent; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.ComboViewer; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.ViewerFilter; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; 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.Event; import org.eclipse.swt.widgets.Label; import org.eclipse.ui.forms.widgets.Section; import org.eclipse.xtext.EcoreUtil2; import org.eclipse.xtext.resource.XtextResource; import org.eclipse.xtext.ui.editor.embedded.EmbeddedEditor; import org.eclipse.xtext.ui.editor.embedded.EmbeddedEditorFactory; import org.eclipse.xtext.ui.editor.embedded.EmbeddedEditorFactory.Builder; import org.eclipse.xtext.ui.editor.embedded.IEditedResourceProvider; import org.eclipse.xtext.ui.resource.XtextResourceSetProvider; import org.eclipse.xtext.validation.CheckMode; import org.eclipse.xtext.validation.IResourceValidator; import org.eclipse.xtext.validation.Issue; import com.google.inject.Injector; /** * @author Aurelie Zara * @author Romain Bioteau */ public class ComparisonExpressionEditor extends SelectionAwareExpressionEditor implements IExpressionEditor { private ComboViewer typeCombo; private Button automaticResolutionButton; protected Button removeDependencyButton; private Section dependencySection; private TableViewer dependenciesViewer; private Button addDependencyButton; @SuppressWarnings("restriction") private EmbeddedEditor comparisonEditor; private EObject context; private ComposedAdapterFactory adapterFactory; private AdapterFactoryLabelProvider adapterLabelProvider; private Expression inputExpression; private XtextResource resource; private Resource eResource; private boolean isPageFlowContext = false; public ComparisonExpressionEditor(Resource eResource, EObject context) { this.context = context; this.eResource = eResource; adapterFactory = new ComposedAdapterFactory(ComposedAdapterFactory.Descriptor.Registry.INSTANCE); adapterLabelProvider = new AdapterFactoryLabelProvider(adapterFactory); } /* (non-Javadoc) * @see org.bonitasoft.studio.expression.editor.provider.IExpressionEditor#createExpressionEditor(org.eclipse.swt.widgets.Composite) */ @Override public Control createExpressionEditor(Composite parent) { final Composite mainComposite = new Composite(parent, SWT.NONE); mainComposite.setLayout(GridLayoutFactory.fillDefaults().numColumns(1).create()); mainComposite.setLayoutData(GridDataFactory.fillDefaults().grab(true, true).create()); createHeader(mainComposite); createComparisonEditor(mainComposite); createDependanciesResolutionComposite(mainComposite); createReturnTypeComposite(mainComposite); return mainComposite; } protected void createHeader(Composite parent) { Composite header = new Composite(parent, SWT.NONE); header.setLayout(GridLayoutFactory.fillDefaults().create()); header.setLayoutData(GridDataFactory.fillDefaults().grab(true, false).create()); final Label autocompleteMessage = new Label(header, SWT.WRAP); autocompleteMessage.setLayoutData(GridDataFactory.fillDefaults().grab(true, true).create()); autocompleteMessage.setText(Messages.autocompleteMessage); autocompleteMessage.setFont(BonitaStudioFontRegistry.getItalicFont()); final Label supportedOperators = new Label(header, SWT.WRAP); supportedOperators.setLayoutData(GridDataFactory.fillDefaults().grab(true, true).create()); supportedOperators.setText(Messages.comparisonSupportedOperators); supportedOperators.setFont(BonitaStudioFontRegistry.getItalicFont()); } @SuppressWarnings("restriction") protected void createComparisonEditor(Composite parent) { IEditedResourceProvider resourceProvider = new IEditedResourceProvider() { @Override public XtextResource createResource() { try { final Injector injector = ConditionModelActivator.getInstance() .getInjector(ConditionModelActivator.ORG_BONITASOFT_STUDIO_CONDITION_CONDITIONMODEL); final XtextResourceSetProvider xtextResourceSetProvider = injector .getInstance(XtextResourceSetProvider.class); final ResourceSet resourceSet = xtextResourceSetProvider .get(RepositoryManager.getInstance().getCurrentRepository().getProject()); resource = (XtextResource) resourceSet.createResource(URI.createURI("somefile.cmodel")); resource.setValidationDisabled(false); final ConditionModelGlobalScopeProvider globalScopeProvider = injector .getInstance(ConditionModelGlobalScopeProvider.class); final List<String> accessibleObjects = new ArrayList<String>(); for (Data d : ModelHelper.getAccessibleData(context)) { accessibleObjects.add(ModelHelper.getEObjectID(d)); } for (Parameter p : ModelHelper.getParentProcess(context).getParameters()) { accessibleObjects.add(ModelHelper.getEObjectID(p)); } globalScopeProvider.setAccessibleEObjects(accessibleObjects); return (XtextResource) resource; } catch (Exception e) { BonitaStudioLog.error(e, ExpressionEditorPlugin.PLUGIN_ID); return null; } } }; ConditionModelActivator activator = ConditionModelActivator.getInstance(); Injector injector = activator .getInjector(ConditionModelActivator.ORG_BONITASOFT_STUDIO_CONDITION_CONDITIONMODEL); EmbeddedEditorFactory factory = injector.getInstance(EmbeddedEditorFactory.class); final Builder buildEditor = factory.newEditor(resourceProvider); comparisonEditor = buildEditor.withParent(parent); comparisonEditor.createPartialEditor(true); comparisonEditor.getViewer().getControl() .setLayoutData(GridDataFactory.fillDefaults().grab(true, true).create()); comparisonEditor.getViewer().addTextListener(new ITextListener() { @Override public void textChanged(TextEvent event) { comparisonEditor.getViewer().getControl().notifyListeners(SWT.Modify, new Event()); } }); } protected void createDependanciesResolutionComposite(Composite parent) { final Composite dependanciesComposite = new Composite(parent, SWT.NONE); dependanciesComposite.setLayoutData( GridDataFactory.fillDefaults().grab(true, false).align(SWT.FILL, SWT.CENTER).create()); dependanciesComposite.setLayout(GridLayoutFactory.fillDefaults().numColumns(2).margins(0, 0).create()); automaticResolutionButton = new Button(dependanciesComposite, SWT.CHECK); automaticResolutionButton.setText(Messages.automaticResolution); automaticResolutionButton .setLayoutData(GridDataFactory.fillDefaults().grab(true, false).span(2, 1).create()); automaticResolutionButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { if (automaticResolutionButton.getSelection()) { removeDependencyButton.setEnabled(false); updateDependencies(); } dependencySection.setExpanded(!automaticResolutionButton.getSelection()); } }); dependencySection = new Section(dependanciesComposite, Section.NO_TITLE); dependencySection.setLayoutData(GridDataFactory.fillDefaults().grab(true, true).span(2, 1).create()); dependencySection.setLayout(GridLayoutFactory.fillDefaults().numColumns(2).create()); Composite dependenciesComposite = new Composite(dependencySection, SWT.NONE); dependenciesComposite.setLayoutData(GridDataFactory.fillDefaults().grab(true, false).create()); dependenciesComposite.setLayout(GridLayoutFactory.fillDefaults().numColumns(2).margins(0, 0).create()); dependenciesViewer = new TableViewer(dependenciesComposite, SWT.BORDER | SWT.V_SCROLL | SWT.MULTI); dependenciesViewer.getControl() .setLayoutData(GridDataFactory.fillDefaults().grab(true, true).hint(SWT.DEFAULT, 40).create()); dependenciesViewer.setContentProvider(new ArrayContentProvider()); dependenciesViewer.setLabelProvider(adapterLabelProvider); dependenciesViewer.addSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent event) { if (!event.getSelection().isEmpty() && !automaticResolutionButton.getSelection()) { removeDependencyButton.setEnabled(true); } } }); Composite addRemoveComposite = new Composite(dependenciesComposite, SWT.NONE); addRemoveComposite.setLayoutData(GridDataFactory.fillDefaults().create()); addRemoveComposite .setLayout(GridLayoutFactory.fillDefaults().numColumns(1).margins(0, 0).spacing(0, 0).create()); addDependencyButton = new Button(addRemoveComposite, SWT.FLAT); addDependencyButton.setText(Messages.add); addDependencyButton.setLayoutData(GridDataFactory.fillDefaults().create()); removeDependencyButton = new Button(addRemoveComposite, SWT.FLAT); removeDependencyButton.setText(Messages.remove); removeDependencyButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { for (Object sel : ((IStructuredSelection) dependenciesViewer.getSelection()).toList()) { inputExpression.getReferencedElements().remove(sel); } } }); removeDependencyButton.setEnabled(false); removeDependencyButton.setLayoutData(GridDataFactory.fillDefaults().create()); dependencySection.setClient(dependenciesComposite); automaticResolutionButton.setSelection(true); } protected void updateDependencies() { inputExpression.getReferencedElements().clear(); final Injector injector = ConditionModelActivator.getInstance() .getInjector(ConditionModelActivator.ORG_BONITASOFT_STUDIO_CONDITION_CONDITIONMODEL); final IResourceValidator xtextResourceChecker = injector.getInstance(IResourceValidator.class); final List<Issue> issues = xtextResourceChecker.validate(resource, CheckMode.NORMAL_AND_FAST, null); if (issues.isEmpty()) {//Validation is OK Operation_Compare compareOp = (Operation_Compare) resource.getContents().get(0); if (compareOp != null) { List<Expression_ProcessRef> references = ModelHelper.getAllItemsOfType(compareOp, ConditionModelPackage.Literals.EXPRESSION_PROCESS_REF); for (Expression_ProcessRef ref : references) { EObject dep = getResolvedDependency(ref); inputExpression.getReferencedElements().add(ExpressionHelper.createDependencyFromEObject(dep)); } } } } /** * @param ref * @return */ private EObject getResolvedDependency(Expression_ProcessRef ref) { EObject dep = resolveProxy(ref.getValue()); List<EObject> orignalDep = ModelHelper.getAllItemsOfType(ModelHelper.getMainProcess(context), dep.eClass()); for (EObject d : orignalDep) { if (EcoreUtil.equals(dep, d)) { dep = d; break; } } return dep; } private EObject resolveProxy(EObject ref) { ResourceSet rSet = null; if (ref.eIsProxy()) { rSet = eResource.getResourceSet(); } EObject dep = EcoreUtil2.resolve(ref, rSet); if (rSet != null) { rSet.getResources().remove(ref.eResource()); } return dep; } protected void createReturnTypeComposite(Composite parent) { final Composite returnTypeComposite = new Composite(parent, SWT.NONE); returnTypeComposite.setLayout(GridLayoutFactory.fillDefaults().numColumns(2).create()); returnTypeComposite.setLayoutData( GridDataFactory.fillDefaults().grab(true, false).align(SWT.FILL, SWT.BOTTOM).create()); Label typeLabel = new Label(returnTypeComposite, SWT.NONE); typeLabel.setText(Messages.returnType); typeCombo = new ComboViewer(returnTypeComposite, SWT.BORDER | SWT.READ_ONLY); typeCombo.getCombo().setLayoutData(GridDataFactory.fillDefaults().grab(true, false).create()); typeCombo.setContentProvider(new ExpressionReturnTypeContentProvider()); typeCombo.setLabelProvider(new ConstantTypeLabelProvider()); typeCombo.setInput(new Object()); } /* (non-Javadoc) * @see org.bonitasoft.studio.expression.editor.provider.IExpressionEditor#bindExpression(org.eclipse.emf.databinding.EMFDataBindingContext, org.eclipse.emf.ecore.EObject, org.bonitasoft.studio.model.expression.Expression, org.eclipse.jface.viewers.ViewerFilter[]) */ @Override public void bindExpression(EMFDataBindingContext dataBindingContext, EObject context, Expression inputExpression, ViewerFilter[] viewerTypeFilters, ExpressionViewer expressionViewer) { this.inputExpression = inputExpression; final IObservableValue contentModelObservable = EMFObservables.observeValue(inputExpression, ExpressionPackage.Literals.EXPRESSION__CONTENT); final IObservableValue nameModelObservable = EMFObservables.observeValue(inputExpression, ExpressionPackage.Literals.EXPRESSION__NAME); final IObservableValue dependenciesModelObservable = EMFObservables.observeValue(inputExpression, ExpressionPackage.Literals.EXPRESSION__REFERENCED_ELEMENTS); final IObservableValue autoDepsModelObservable = EMFObservables.observeValue(inputExpression, ExpressionPackage.Literals.EXPRESSION__AUTOMATIC_DEPENDENCIES); final IObservableValue returnTypeModelObservable = EMFObservables.observeValue(inputExpression, ExpressionPackage.Literals.EXPRESSION__RETURN_TYPE); final ISWTObservableValue observeText = SWTObservables .observeText(comparisonEditor.getViewer().getControl(), SWT.Modify); dataBindingContext.bindValue(observeText, contentModelObservable); observeText.addValueChangeListener(new IValueChangeListener() { @Override public void handleValueChange(ValueChangeEvent event) { if (ComparisonExpressionEditor.this.inputExpression.isAutomaticDependencies()) { updateDependencies(); } } }); dataBindingContext.bindValue(observeText, nameModelObservable); dataBindingContext.bindValue(ViewersObservables.observeInput(dependenciesViewer), dependenciesModelObservable); UpdateValueStrategy opposite = new UpdateValueStrategy(); opposite.setConverter(new Converter(Boolean.class, Boolean.class) { @Override public Object convert(Object fromObject) { return !((Boolean) fromObject); } }); dataBindingContext.bindValue(SWTObservables.observeSelection(automaticResolutionButton), autoDepsModelObservable); dataBindingContext.bindValue(SWTObservables.observeSelection(automaticResolutionButton), SWTObservables.observeEnabled(addDependencyButton), opposite, new UpdateValueStrategy(UpdateValueStrategy.POLICY_NEVER)); dependencySection.setExpanded(!automaticResolutionButton.getSelection()); addDependencyButton.setEnabled(!inputExpression.isAutomaticDependencies()); ControlDecorationSupport.create(dataBindingContext.bindValue( ViewersObservables.observeSingleSelection(typeCombo), returnTypeModelObservable), SWT.LEFT); typeCombo.getCombo().setEnabled(!inputExpression.isReturnTypeFixed()); final ExpressionContentProvider provider = new ExpressionContentProvider(); provider.setContext(context); final Set<Expression> filteredExpressions = new HashSet<Expression>(); Expression[] expressions = provider.getExpressions(); EObject input = provider.getContext(); if (expressions != null) { filteredExpressions.addAll(Arrays.asList(expressions)); if (input != null && viewerTypeFilters != null) { for (Expression exp : expressions) { for (ViewerFilter filter : viewerTypeFilters) { if (filter != null && !filter.select(comparisonEditor.getViewer(), input, exp)) { filteredExpressions.remove(exp); } } } } } addDependencyButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { SelectDependencyDialog dialog = new SelectDependencyDialog(Display.getDefault().getActiveShell(), filteredExpressions, ComparisonExpressionEditor.this.inputExpression.getReferencedElements()); dialog.open(); } }); } /* (non-Javadoc) * @see org.bonitasoft.studio.expression.editor.provider.IExpressionEditor#canFinish() */ @Override public boolean canFinish() { return true; } /* (non-Javadoc) * @see org.bonitasoft.studio.expression.editor.provider.IExpressionEditor#dispose() */ @Override public void dispose() { } /* (non-Javadoc) * @see org.bonitasoft.studio.expression.editor.provider.IExpressionEditor#okPressed() */ @Override public void okPressed() { } @Override public Control getTextControl() { return comparisonEditor.getViewer().getTextWidget(); } @Override public boolean isPageFlowContext() { return isPageFlowContext; } @Override public void setIsPageFlowContext(boolean isPageFlowContext) { this.isPageFlowContext = isPageFlowContext; } }