Java tutorial
/** * Copyright (C) 2009-2012 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.properties.form.sections.actions.contributions; import java.util.Date; import org.bonitasoft.studio.common.ExpressionConstants; import org.bonitasoft.studio.common.properties.ExtensibleGridPropertySection; import org.bonitasoft.studio.common.properties.IExtensibleGridPropertySectionContribution; import org.bonitasoft.studio.expression.editor.filter.AvailableExpressionTypeFilter; import org.bonitasoft.studio.expression.editor.provider.IExpressionValidator; import org.bonitasoft.studio.expression.editor.viewer.ExpressionViewer; import org.bonitasoft.studio.form.properties.i18n.Messages; import org.bonitasoft.studio.model.expression.Expression; import org.bonitasoft.studio.model.expression.ExpressionFactory; import org.bonitasoft.studio.model.expression.ExpressionPackage; import org.bonitasoft.studio.model.form.CheckBoxSingleFormField; import org.bonitasoft.studio.model.form.DateFormField; import org.bonitasoft.studio.model.form.DurationFormField; import org.bonitasoft.studio.model.form.FileWidget; import org.bonitasoft.studio.model.form.FormField; import org.bonitasoft.studio.model.form.FormPackage; import org.bonitasoft.studio.model.form.HtmlWidget; import org.bonitasoft.studio.model.form.IFrameWidget; import org.bonitasoft.studio.model.form.Info; import org.bonitasoft.studio.model.form.MessageInfo; import org.bonitasoft.studio.model.form.MultipleValuatedFormField; import org.bonitasoft.studio.model.form.TextInfo; import org.bonitasoft.studio.model.form.Widget; import org.eclipse.core.databinding.validation.ValidationStatus; import org.eclipse.core.runtime.IStatus; import org.eclipse.emf.databinding.EMFDataBindingContext; import org.eclipse.emf.databinding.edit.EMFEditObservables; import org.eclipse.emf.databinding.edit.EMFEditProperties; import org.eclipse.emf.ecore.EObject; import org.eclipse.emf.edit.command.SetCommand; import org.eclipse.emf.edit.domain.EditingDomain; import org.eclipse.emf.transaction.TransactionalEditingDomain; import org.eclipse.jface.databinding.swt.SWTObservables; import org.eclipse.jface.databinding.viewers.ViewersObservables; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetWidgetFactory; /** * * @author Baptiste Mesta * */ public class InitialValueContribution implements IExtensibleGridPropertySectionContribution { protected TransactionalEditingDomain editingDomain; protected Widget widget; protected ExpressionViewer expressionViewer; protected EMFDataBindingContext dataBindingContext; protected Composite composite; public static final int MARGIN_WIDTH = 5; public static final int MARGIN_HEIGHT = 0; protected Button allowHtmlButton; private InitialValueExpressionFilter initialValueExpressionFilter; public void createControl(Composite composite, TabbedPropertySheetWidgetFactory widgetFactory, ExtensibleGridPropertySection extensibleGridPropertySection) { initCreateControl(composite); doCreateControl(widgetFactory); bindWidgets(); } protected void doCreateControl(TabbedPropertySheetWidgetFactory widgetFactory) { /*Create control for initial value*/ expressionViewer = new ExpressionViewer(composite, SWT.BORDER, widgetFactory, editingDomain, FormPackage.Literals.WIDGET__INPUT_EXPRESSION, true); expressionViewer.addFilter(getExpressionViewerFilter()); if (widget instanceof CheckBoxSingleFormField) { expressionViewer.setMessage(Messages.data_tooltip_boolean, IStatus.INFO); } else { expressionViewer.setMessage(Messages.data_tooltip_text, IStatus.INFO); } if (widget instanceof DateFormField) { expressionViewer.addExpressionValidator(ExpressionConstants.ALL_TYPES, new IExpressionValidator() { private Expression inputExpression; public IStatus validate(Object value) { String returnType = inputExpression.getReturnType(); if (returnType.equals(Date.class.getName()) || returnType.equals(String.class.getName())) { return ValidationStatus.ok(); } else { return ValidationStatus.warning(Messages.dateWidgetReturnTypeWarning); } } public void setInputExpression(Expression inputExpression) { this.inputExpression = inputExpression; } public void setDomain(EditingDomain domain) { } public void setContext(EObject context) { } }); } expressionViewer.getControl().setLayoutData(GridDataFactory.fillDefaults().grab(true, false).create()); /*Create checkbox to allow HTML*/ createAllowHtmlButton(composite, widgetFactory); } protected AvailableExpressionTypeFilter getExpressionViewerFilter() { if (initialValueExpressionFilter == null) { initialValueExpressionFilter = new InitialValueExpressionFilter( new String[] { ExpressionConstants.VARIABLE_TYPE, ExpressionConstants.SCRIPT_TYPE, ExpressionConstants.CONSTANT_TYPE, ExpressionConstants.PARAMETER_TYPE, ExpressionConstants.SCRIPT_TYPE, ExpressionConstants.DOCUMENT_TYPE, ExpressionConstants.XPATH_TYPE, ExpressionConstants.I18N_TYPE }); initialValueExpressionFilter.setWidget(widget); } return initialValueExpressionFilter; } private void initCreateControl(Composite composite) { this.composite = composite; composite.setLayoutData(GridDataFactory.fillDefaults().grab(true, false).create()); if (dataBindingContext != null) { dataBindingContext.dispose(); } dataBindingContext = new EMFDataBindingContext(); composite.setLayout(getCompositeLayout()); } protected GridLayout getCompositeLayout() { GridLayout layout = new GridLayout(1, false); layout.marginHeight = MARGIN_HEIGHT; layout.marginWidth = MARGIN_WIDTH; return layout; } protected void createAllowHtmlButton(Composite composite, TabbedPropertySheetWidgetFactory widgetFactory) { //HTML can be an issue only with these two kind of widget if (widget instanceof MessageInfo || widget instanceof TextInfo) { allowHtmlButton = widgetFactory.createButton(composite, Messages.GeneralSection_allowHTML, SWT.CHECK); } } protected void bindWidgets() { if (allowHtmlButton != null && !allowHtmlButton.isDisposed()) { Expression inputExpression = widget.getInputExpression(); if (inputExpression == null) { inputExpression = ExpressionFactory.eINSTANCE.createExpression(); editingDomain.getCommandStack().execute(SetCommand.create(editingDomain, widget, FormPackage.Literals.WIDGET__INPUT_EXPRESSION, inputExpression)); } dataBindingContext.bindValue(SWTObservables.observeSelection(allowHtmlButton), EMFEditObservables.observeValue(editingDomain, inputExpression, ExpressionPackage.Literals.EXPRESSION__HTML_ALLOWED)); } updateViewerInput(); } public void dispose() { if (dataBindingContext != null) { dataBindingContext.dispose(); } } public String getLabel() { if (widget instanceof IFrameWidget) { return Messages.Action_UrlOfTheIFrame; } else { return Messages.Action_InitialValue; } } public boolean isRelevantFor(EObject eObject) { return (eObject instanceof FormField || eObject instanceof Info) && !(eObject instanceof DateFormField) && !(eObject instanceof MultipleValuatedFormField) && !(eObject instanceof FileWidget) && !(eObject instanceof DurationFormField) && !(eObject instanceof HtmlWidget); } public void refresh() { } public void setEObject(EObject object) { widget = (Widget) object; if (initialValueExpressionFilter != null) { initialValueExpressionFilter.setWidget(widget); } } protected void updateViewerInput() { if (expressionViewer != null && !expressionViewer.getControl().isDisposed()) { Expression input = widget.getInputExpression(); if (input == null) { input = ExpressionFactory.eINSTANCE.createExpression(); editingDomain.getCommandStack().execute(SetCommand.create(editingDomain, widget, FormPackage.Literals.WIDGET__INPUT_EXPRESSION, input)); } expressionViewer.setEditingDomain(editingDomain); dataBindingContext.bindValue(ViewersObservables.observeSingleSelection(expressionViewer), EMFEditProperties.value(editingDomain, FormPackage.Literals.WIDGET__INPUT_EXPRESSION) .observe(input)); expressionViewer.setInput(widget); expressionViewer.setSelection(new StructuredSelection(input)); } } public void setEditingDomain(TransactionalEditingDomain editingDomain) { this.editingDomain = editingDomain; } public void setSelection(ISelection selection) { } }