Java tutorial
/** * Copyright (C) 2014 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 org.bonitasoft.studio.common.jface.databinding.converter.BooleanInverserConverter; import org.bonitasoft.studio.common.properties.ExtensibleGridPropertySection; import org.bonitasoft.studio.common.properties.IExtensibleGridPropertySectionContribution; import org.bonitasoft.studio.form.properties.i18n.Messages; import org.bonitasoft.studio.model.form.FileWidget; import org.bonitasoft.studio.model.form.FileWidgetDownloadType; import org.bonitasoft.studio.model.form.FileWidgetInputType; import org.bonitasoft.studio.model.form.FormPackage; import org.bonitasoft.studio.pics.Pics; import org.bonitasoft.studio.pics.PicsConstants; import org.eclipse.core.databinding.DataBindingContext; 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.SelectObservableValue; import org.eclipse.core.databinding.observable.value.ValueChangeEvent; import org.eclipse.emf.common.command.Command; import org.eclipse.emf.databinding.EMFDataBindingContext; import org.eclipse.emf.databinding.EMFObservables; import org.eclipse.emf.ecore.EObject; import org.eclipse.emf.edit.command.SetCommand; import org.eclipse.emf.transaction.TransactionalEditingDomain; import org.eclipse.jface.databinding.swt.SWTObservables; import org.eclipse.jface.fieldassist.ControlDecoration; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.layout.GridLayoutFactory; import org.eclipse.jface.viewers.ISelection; import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetWidgetFactory; /** * @author aurelie * */ public class FileWidgetDocumentPickerContribution implements IExtensibleGridPropertySectionContribution { private FileWidget fileWidget; private TransactionalEditingDomain editingDomain; private Button both; private Button url; private Button browse; private TabbedPropertySheetWidgetFactory widgetFactory; private DataBindingContext dataBindingContext; private Composite mainComposite; /* * (non-Javadoc) * @see org.bonitasoft.studio.common.properties.IExtensibleGridPropertySectionContribution#isRelevantFor(org.eclipse.emf.ecore.EObject) */ public boolean isRelevantFor(final EObject eObject) { return eObject instanceof FileWidget; } /* * (non-Javadoc) * @see org.bonitasoft.studio.common.properties.IExtensibleGridPropertySectionContribution#refresh() */ public void refresh() { } /* * (non-Javadoc) * @see org.bonitasoft.studio.common.properties.IExtensibleGridPropertySectionContribution#getLabel() */ public String getLabel() { return Messages.documentPickerLabel; } /* * (non-Javadoc) * @see org.bonitasoft.studio.common.properties.IExtensibleGridPropertySectionContribution#createControl(org.eclipse.swt.widgets.Composite, * org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetWidgetFactory, org.bonitasoft.studio.common.properties.ExtensibleGridPropertySection) */ public void createControl(final Composite composite, final TabbedPropertySheetWidgetFactory widgetFactory, final ExtensibleGridPropertySection extensibleGridPropertySection) { mainComposite = composite; this.widgetFactory = widgetFactory; mainComposite.setLayout(GridLayoutFactory.fillDefaults().numColumns(3).create()); mainComposite.setLayoutData(GridDataFactory.fillDefaults().grab(true, true).create()); createDownloadTypeComposite(composite); } private void createDownloadTypeComposite(final Composite parent) { final Composite composite = widgetFactory.createComposite(parent); composite.setLayout(GridLayoutFactory.fillDefaults().numColumns(4).margins(3, 0).create()); url = widgetFactory.createButton(composite, Messages.urlRadio, SWT.RADIO); browse = widgetFactory.createButton(composite, Messages.BrowseRadio, SWT.RADIO); both = widgetFactory.createButton(composite, Messages.both, SWT.RADIO); final ControlDecoration decoDoc = new ControlDecoration(url, SWT.LEFT); decoDoc.setDescriptionText(Messages.fileWidgetTypeToolTip); decoDoc.setImage(Pics.getImage(PicsConstants.hint)); decoDoc.setMarginWidth(0); decoDoc.setShowOnlyOnFocus(false); createResourceObservable(); updateBinding(); } private void updateBinding() { if (dataBindingContext != null) { dataBindingContext.dispose(); } dataBindingContext = new EMFDataBindingContext(); bindEnableButtons(); bindDownloadType(); } private IObservableValue createResourceObservable() { final IObservableValue resourceObservable = EMFObservables.observeValue(fileWidget, FormPackage.Literals.FILE_WIDGET__INPUT_TYPE); resourceObservable.addValueChangeListener(new IValueChangeListener() { public void handleValueChange(final ValueChangeEvent event) { final FileWidgetInputType inputType = (FileWidgetInputType) ((IObservableValue) event.getSource()) .getValue(); if (FileWidgetInputType.RESOURCE.equals(inputType) && url.getSelection()) { browse.setSelection(true); url.setSelection(false); both.setSelection(false); final Command c = SetCommand.create(editingDomain, fileWidget, FormPackage.Literals.FILE_WIDGET__DOWNLOAD_TYPE, FileWidgetDownloadType.BROWSE); if (c.canExecute()) { editingDomain.getCommandStack().execute(c); } } } }); return resourceObservable; } private void bindDownloadType() { final SelectObservableValue downLoadTypeObservable = new SelectObservableValue( FileWidgetDownloadType.class); downLoadTypeObservable.addOption(FileWidgetDownloadType.URL, SWTObservables.observeSelection(url)); downLoadTypeObservable.addOption(FileWidgetDownloadType.BROWSE, SWTObservables.observeSelection(browse)); downLoadTypeObservable.addOption(FileWidgetDownloadType.BOTH, SWTObservables.observeSelection(both)); dataBindingContext.bindValue(downLoadTypeObservable, EMFObservables.observeValue(fileWidget, FormPackage.Literals.FILE_WIDGET__DOWNLOAD_TYPE)); } private void bindEnableButtons() { final UpdateValueStrategy strategy = createEnabledStrategy(); final UpdateValueStrategy strategyForUrl = createEnabledStrategyForDownloadOnlyURLCase(); dataBindingContext.bindValue(SWTObservables.observeEnabled(url), EMFObservables.observeValue(fileWidget, FormPackage.Literals.FILE_WIDGET__DOWNLOAD_ONLY), strategyForUrl, strategyForUrl); dataBindingContext.bindValue(SWTObservables.observeEnabled(url), EMFObservables.observeValue(fileWidget, FormPackage.Literals.FILE_WIDGET__INPUT_TYPE), null, createEnabledUrlWhenInputIsResourceStrategyTargetToModel()); dataBindingContext.bindValue(SWTObservables.observeEnabled(browse), EMFObservables.observeValue(fileWidget, FormPackage.Literals.FILE_WIDGET__DOWNLOAD_ONLY), strategy, strategy); dataBindingContext.bindValue(SWTObservables.observeEnabled(both), EMFObservables.observeValue(fileWidget, FormPackage.Literals.FILE_WIDGET__DOWNLOAD_ONLY), strategy, strategy); } protected UpdateValueStrategy createEnabledUrlWhenInputIsResourceStrategyTargetToModel() { final UpdateValueStrategy strategy = new UpdateValueStrategy(); strategy.setConverter(new Converter(FileWidgetInputType.class, Boolean.class) { public Object convert(final Object arg0) { if (FileWidgetInputType.RESOURCE.equals(arg0) || fileWidget.isDownloadOnly()) { return false; } return true; } }); return strategy; } protected UpdateValueStrategy createEnabledStrategyForDownloadOnlyURLCase() { final UpdateValueStrategy strategy = new UpdateValueStrategy(); strategy.setConverter(new Converter(Boolean.class, Boolean.class) { public Object convert(final Object arg0) { if (FileWidgetInputType.RESOURCE.equals(fileWidget.getInputType())) { return false; } return !((Boolean) arg0); } }); return strategy; } protected UpdateValueStrategy createEnabledStrategy() { final UpdateValueStrategy strategy = new UpdateValueStrategy(); strategy.setConverter(new BooleanInverserConverter()); return strategy; } /* * (non-Javadoc) * @see org.bonitasoft.studio.common.properties.IExtensibleGridPropertySectionContribution#setEObject(org.eclipse.emf.ecore.EObject) */ public void setEObject(final EObject object) { fileWidget = (FileWidget) object; } /* * (non-Javadoc) * @see org.bonitasoft.studio.common.properties.IExtensibleGridPropertySectionContribution#setSelection(org.eclipse.jface.viewers.ISelection) */ public void setSelection(final ISelection selection) { } /* * (non-Javadoc) * @see * org.bonitasoft.studio.common.properties.IExtensibleGridPropertySectionContribution#setEditingDomain(org.eclipse.emf.transaction.TransactionalEditingDomain * ) */ public void setEditingDomain(final TransactionalEditingDomain editingDomain) { this.editingDomain = editingDomain; } /* * (non-Javadoc) * @see org.bonitasoft.studio.common.properties.IExtensibleGridPropertySectionContribution#dispose() */ public void dispose() { } }