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.tuhh.ui.panel; import org.apache.commons.lang3.ArrayUtils; import org.apache.commons.lang3.StringUtils; import org.eclipse.core.databinding.beans.BeansObservables; import org.eclipse.core.databinding.observable.value.IObservableValue; import org.eclipse.jface.databinding.swt.ISWTObservableValue; import org.eclipse.jface.databinding.swt.SWTObservables; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.ComboViewer; import org.eclipse.swt.SWT; import org.eclipse.swt.events.FocusEvent; import org.eclipse.swt.events.FocusListener; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.forms.widgets.FormToolkit; import org.kalypso.commons.databinding.DataBinder; import org.kalypso.commons.databinding.IDataBinding; import org.kalypso.commons.databinding.SimpleDataBinding; import org.kalypso.contribs.eclipse.swt.events.DoubleModifyListener; import org.kalypso.contribs.eclipse.swt.widgets.ComboMessageFocusListener; import org.kalypso.model.wspm.core.profil.IProfile; import org.kalypso.model.wspm.core.profil.changes.ProfileChangeHint; import org.kalypso.model.wspm.tuhh.core.profile.energyloss.ENERGYLOSS_TYPE; import org.kalypso.model.wspm.tuhh.core.profile.energyloss.Energyloss; import org.kalypso.model.wspm.tuhh.core.profile.energyloss.EnergylossProfileObject; import org.kalypso.model.wspm.tuhh.ui.i18n.Messages; import org.kalypso.model.wspm.tuhh.ui.panel.energyloss.EnergylossDataModel; import org.kalypso.model.wspm.ui.view.AbstractProfilView; import org.kalypso.ui.editor.styleeditor.binding.SLDBinding; /** * @author kimwerner */ public class EnergylossPanel extends AbstractProfilView { private FormToolkit m_toolkit = null; protected Composite m_propPanel; private DoubleModifyListener m_doubleModifyListener = null; private ComboMessageFocusListener m_comboFocusListener = null; public EnergylossPanel(final IProfile profile) { super(profile); } @Override protected Control doCreateControl(final Composite parent, final FormToolkit toolkit) { m_toolkit = toolkit; m_propPanel = m_toolkit.createComposite(parent); if (m_propPanel == null) { m_toolkit.createText(m_propPanel, Messages.getString("org.kalypso.model.wspm.tuhh.ui.panel.EnergylossPanel.0")); //$NON-NLS-1$ } else { m_propPanel.setLayout(new GridLayout(2, false)); } updateControls(); return m_propPanel; } private final EnergylossProfileObject getEnergyloss() { final EnergylossProfileObject[] enlosses = getProfile().getProfileObjects(EnergylossProfileObject.class); return enlosses.length == 0 ? null : enlosses[0]; } // FIXME: makes no sense in mixing databinding and modify listeners private final DoubleModifyListener getModifyListener() { if (m_doubleModifyListener == null && m_propPanel != null) { final Display display = m_propPanel.getDisplay(); final Color goodColor = display.getSystemColor(SWT.COLOR_BLACK); final Color badColor = display.getSystemColor(SWT.COLOR_RED); m_doubleModifyListener = new DoubleModifyListener(goodColor, badColor); } return m_doubleModifyListener; } private final ComboMessageFocusListener getComboMessageListener() { if (m_comboFocusListener == null && m_propPanel != null) { final Display display = m_propPanel.getDisplay(); final Color textColor = display.getSystemColor(SWT.COLOR_BLACK); final Color messageColor = display.getSystemColor(SWT.COLOR_DARK_GRAY); m_comboFocusListener = new ComboMessageFocusListener( Messages.getString("org.kalypso.model.wspm.tuhh.ui.panel.EnergylossPanel.3"), messageColor, //$NON-NLS-1$ textColor); } return m_comboFocusListener; } private void buildText(final IDataBinding binding, final EnergylossDataModel model) { final Text text = m_toolkit.createText(m_propPanel, StringUtils.EMPTY, SWT.BORDER | SWT.RIGHT); text.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); text.setMessage(Messages.getString("org.kalypso.model.wspm.tuhh.ui.panel.EnergylossPanel.1")); //$NON-NLS-1$ text.setText(model.getEnergylossValue() == null ? "" : model.getEnergylossValue().toString()); //$NON-NLS-1$ text.addModifyListener(getModifyListener()); final DataBinder binder = bind(text, model); binding.bindValue(binder); } private void buildCombo(final IDataBinding dataBinding, final EnergylossDataModel model) { final ComboViewer elType = new ComboViewer(m_propPanel, SWT.BORDER); elType.setContentProvider(new ArrayContentProvider()); elType.setInput(ArrayUtils.remove(ENERGYLOSS_TYPE.values(), 0)); final Combo combo = elType.getCombo(); combo.setLayoutData(new GridData(GridData.FILL, GridData.CENTER, true, false)); combo.setToolTipText(Messages.getString("org.kalypso.model.wspm.tuhh.ui.panel.EnergylossPanel.2")); //$NON-NLS-1$ // FIXME: makes no sense: data binding, but also a focus listener ?!? combo.addFocusListener(new FocusListener() { @Override public void focusGained(final FocusEvent e) { // } @Override public void focusLost(final FocusEvent e) { if (!(e.getSource() instanceof Combo)) { return; } if (((Combo) e.getSource()).getSelectionIndex() > -1 || ((Combo) e.getSource()).getText() != "") //$NON-NLS-1$ { model.fireObjectChange(((Combo) e.getSource()).getText(), model.getEnergylossValue()); } else if (((Combo) e.getSource()).getText() == "") //$NON-NLS-1$ { model.removeEnergyloss(); } } }); combo.addFocusListener(getComboMessageListener()); m_toolkit.adapt(elType.getCombo()); final DataBinder binder = bind(elType.getCombo(), model); dataBinding.bindValue(binder); m_comboFocusListener.init(combo); } private DataBinder bind(final Text textField, final EnergylossDataModel model) { final ISWTObservableValue targetValue = SWTObservables.observeText(textField, SLDBinding.TEXT_DEFAULT_EVENTS); final IObservableValue modelValue = BeansObservables.observeValue(model, EnergylossDataModel.PROPERTY_ENERGYLOSS_VALUE); return new DataBinder(targetValue, modelValue); } private DataBinder bind(final Combo combo, final EnergylossDataModel model) { final ISWTObservableValue targetValue = SWTObservables.observeSelection(combo); final IObservableValue modelValue = BeansObservables.observeValue(model, EnergylossDataModel.PROPERTY_ENERGYLOSS_TYPE); return new DataBinder(targetValue, modelValue); } private final void clearPanel() { if (m_propPanel == null || m_propPanel.isDisposed()) { return; } for (final Control control : m_propPanel.getChildren()) { control.dispose(); } } final private boolean isEinlauf(final Energyloss[] energylosses, final int index) { if (index < energylosses.length) { final Energyloss energyloss = energylosses[index]; return ENERGYLOSS_TYPE.eEinlauf.getId().equals(energyloss.getType()); } return false; } protected void createPropertyPanel() { final IDataBinding binding = new SimpleDataBinding(m_toolkit); final Energyloss[] energylosses = getEnergyloss().getEnergylosses(); int maxParamIndex = 4; EnergylossDataModel dataModel = new EnergylossDataModel(getProfile(), maxParamIndex + 1); for (int i = 0; i < maxParamIndex; i++) { if (isEinlauf(energylosses, i)) { dataModel = new EnergylossDataModel(getProfile(), i); maxParamIndex++; } else { final EnergylossDataModel model = new EnergylossDataModel(getProfile(), i); buildCombo(binding, model); buildText(binding, model); } } final Label label = m_toolkit.createLabel(m_propPanel, Messages.getString("org.kalypso.model.wspm.tuhh.ui.panel.EnergylossPanel.4") + ": " //$NON-NLS-1$//$NON-NLS-2$ + ENERGYLOSS_TYPE.eEinlauf.toString()); label.setToolTipText(Messages.getString("org.kalypso.model.wspm.tuhh.ui.panel.EnergylossPanel.5"));//$NON-NLS-1$ dataModel.setEnergylossType(ENERGYLOSS_TYPE.eEinlauf.getId()); buildText(binding, dataModel); //$NON-NLS-1$ m_propPanel.layout(); } // FIXME: makes no sense: data binding and updating the control like this protected void updateControls() { clearPanel(); createPropertyPanel(); } @Override public void onProfilChanged(final ProfileChangeHint hint) { if (hint.isObjectDataChanged()) { final Control control = getControl(); if (control != null && !control.isDisposed()) { control.getDisplay().asyncExec(new Runnable() { @Override public void run() { updateControls(); } }); } } } }