Java tutorial
/*---------------- FILE HEADER KALYPSO ------------------------------------------ * * This file is part of kalypso. * Copyright (C) 2004 by: * * Technical University Hamburg-Harburg (TUHH) * Institute of River and coastal engineering * Denickestrae 22 * 21073 Hamburg, Germany * http://www.tuhh.de/wb * * and * * Bjoernsen Consulting Engineers (BCE) * Maria Trost 3 * 56070 Koblenz, Germany * http://www.bjoernsen.de * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * Contact: * * E-Mail: * belger@bjoernsen.de * schlienger@bjoernsen.de * v.doemming@tuhh.de * * ---------------------------------------------------------------------------*/ package org.kalypso.model.wspm.pdb.ui.internal.checkout; import java.util.Arrays; import java.util.Set; import org.apache.commons.lang3.ArrayUtils; import org.eclipse.core.databinding.beans.BeansObservables; import org.eclipse.core.databinding.observable.value.IObservableValue; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Status; import org.eclipse.jface.databinding.swt.ISWTObservableValue; import org.eclipse.jface.databinding.swt.SWTObservables; import org.eclipse.jface.databinding.viewers.IViewerObservableValue; import org.eclipse.jface.databinding.viewers.ViewersObservables; import org.eclipse.jface.layout.GridLayoutFactory; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.ComboViewer; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.ViewerFilter; import org.eclipse.jface.wizard.IWizardPage; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Label; import org.kalypso.commons.databinding.DataBinder; import org.kalypso.commons.databinding.jface.wizard.DatabindingWizardPage; import org.kalypso.core.status.StatusComposite; import org.kalypso.model.wspm.pdb.db.mapping.CrossSection; import org.kalypso.model.wspm.pdb.db.mapping.Event; import org.kalypso.model.wspm.pdb.db.mapping.WaterBody; import org.kalypso.model.wspm.pdb.ui.internal.WspmPdbUiPlugin; import org.kalypso.model.wspm.pdb.ui.internal.content.ConnectionContentControl; import org.kalypso.model.wspm.pdb.ui.internal.content.WaterBodyStructure; import org.kalypso.model.wspm.pdb.ui.internal.i18n.Messages; import org.kalypso.model.wspm.pdb.wspm.CheckoutDataMapping; import org.kalypso.model.wspm.pdb.wspm.CheckoutPdbData; import org.kalypso.model.wspm.pdb.wspm.CheckoutPdbData.RemoveStrategy; /** * @author Gernot Belger */ public class CheckoutPdbPreviewPage extends WizardPage { private final CheckoutPdbData m_data; private DatabindingWizardPage m_binding; private CheckoutPdbLabelDecorator m_nameDecorator; private TreeViewer m_viewer; protected CheckoutPdbPreviewPage(final String pageName, final CheckoutPdbData data) { super(pageName); m_data = data; setTitle(Messages.getString("CheckoutPdbPreviewPage.0")); //$NON-NLS-1$ setDescription(Messages.getString("CheckoutPdbPreviewPage.1")); //$NON-NLS-1$ } @Override public IWizardPage getPreviousPage() { // not allowed to go back return null; } @Override public void createControl(final Composite parent) { final Composite panel = new Composite(parent, SWT.NONE); setControl(panel); GridLayoutFactory.swtDefaults().applyTo(panel); m_binding = new DatabindingWizardPage(this, null, IStatus.ERROR | IStatus.WARNING | IStatus.CANCEL); createTreePreview(panel).setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); createWarningElements(panel).setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false)); createOptionsGroup(panel).setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false)); } private Control createTreePreview(final Composite parent) { m_nameDecorator = new CheckoutPdbLabelDecorator(); m_viewer = ConnectionContentControl.createContentTree(null, parent, m_nameDecorator); updateTreePreview(); return m_viewer.getControl(); } public void updateTreePreview() { final CheckoutDataMapping mapping = m_data.getMapping(); if (mapping == null) return; final WaterBody[] rootItems = mapping.getWaterBodies(); final Set<Object> allItems = mapping.getAllPdbElements(); final Set<Object> allPdbElementsWithWspm = mapping.getAllPdbElementsWithWspm(); m_nameDecorator.setElements(allPdbElementsWithWspm); m_viewer.setInput(new WaterBodyStructure(Arrays.asList(rootItems))); m_viewer.setFilters(new ViewerFilter[] { new CheckoutPdbFilter(allItems) }); m_viewer.expandAll(); } private Control createWarningElements(final Composite parent) { final Composite panel = new Composite(parent, SWT.NONE); GridLayoutFactory.swtDefaults().numColumns(3).applyTo(panel); addWarning(panel, validateSelection(), null); addWarning(panel, validateExistingElements(), CheckoutPdbData.PROPERTY_CONFIRM_EXISTING); return panel; } private void addWarning(final Composite panel, final IStatus status, final String confirmProperty) { if (status.isOK()) return; if (confirmProperty != null) { final Button confirmCheck = new Button(panel, SWT.CHECK); confirmCheck.setToolTipText(Messages.getString("CheckoutPdbPreviewPage.2")); //$NON-NLS-1$ confirmCheck.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, false, false)); final ISWTObservableValue target = SWTObservables.observeSelection(confirmCheck); final IObservableValue model = BeansObservables.observeValue(m_data, confirmProperty); final DataBinder binder = new DataBinder(target, model); binder.addTargetAfterGetValidator(new CheckoutPdbConfirmValidator()); m_binding.bindValue(binder); } final StatusComposite statusComposite = new StatusComposite(panel, StatusComposite.HIDE_TEXT); statusComposite.setStatus(status); statusComposite.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false)); final String message = status.getMessage(); final Label text = new Label(panel, SWT.WRAP); text.setText(message); text.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); } private IStatus validateSelection() { final CheckoutDataMapping mapping = m_data.getMapping(); final CrossSection[] crossSections = mapping.getCrossSections(); final Event[] events = mapping.getEvents(); if (ArrayUtils.isEmpty(crossSections) && ArrayUtils.isEmpty(events)) { final String msg = Messages.getString("CheckoutPdbPreviewPage.3"); //$NON-NLS-1$ return new Status(IStatus.WARNING, WspmPdbUiPlugin.PLUGIN_ID, msg); } return Status.OK_STATUS; } private IStatus validateExistingElements() { final CheckoutDataMapping mapping = m_data.getMapping(); final Set<Object> existingElements = mapping.getAllPdbElementsWithWspm(); if (existingElements.isEmpty()) return Status.OK_STATUS; final String msg = Messages.getString("CheckoutPdbPreviewPage.4"); //$NON-NLS-1$ return new Status(IStatus.WARNING, WspmPdbUiPlugin.PLUGIN_ID, msg); } private Control createOptionsGroup(final Composite panel) { final Group group = new Group(panel, SWT.NONE); group.setText(Messages.getString("CheckoutPdbPreviewPage.5")); //$NON-NLS-1$ GridLayoutFactory.swtDefaults().numColumns(2).applyTo(group); new Label(group, SWT.NONE).setText(Messages.getString("CheckoutPdbPreviewPage.6")); //$NON-NLS-1$ final ComboViewer combo = new ComboViewer(group, SWT.READ_ONLY | SWT.DROP_DOWN); combo.setContentProvider(new ArrayContentProvider()); combo.setLabelProvider(new LabelProvider()); combo.setInput(RemoveStrategy.values()); final IViewerObservableValue target = ViewersObservables.observeSinglePostSelection(combo); final IObservableValue model = BeansObservables.observeValue(m_data, CheckoutPdbData.PROPERTY_REMOVE_STRATEGY); m_binding.bindValue(target, model); return group; } }