Java tutorial
/* * Copyright 2002-2010 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.jdal.swing; import java.awt.Container; import java.awt.Dimension; import java.awt.event.ActionEvent; import java.io.Serializable; import java.util.HashSet; import java.util.Locale; import java.util.Set; import javax.swing.BorderFactory; import javax.swing.Box; import javax.swing.Icon; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.event.TableModelEvent; import javax.swing.event.TableModelListener; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.jdal.beans.MessageSourceWrapper; import org.jdal.dao.Dao; import org.jdal.swing.action.BeanAction; import org.jdal.swing.form.FormUtils; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.MessageSource; import org.springframework.dao.DataAccessException; /** * Simple table editor * * @author Jose Luis Martin - (jlm@joseluismartin.info) */ public class TableEditor<T> extends AbstractView<T> implements TableModelListener { // Default Icons // FIXME: Move to Tango Desktop Icons public static String DEFAULT_ICON = "/images/table/table.png"; public static String DEFAULT_ADD_ICON = "/images/table/22x22/edit-new.png"; public static String DEFAULT_REMOVE_ICON = "/images/table/22x22/edit-delete.png"; public static String DEFAULT_SAVE_ICON = "/images/table/22x22/save.png"; public static String DEFAULT_REFRESH_ICON = "/images/table/22x22/reload.png"; /** log */ private static final Log log = LogFactory.getLog(TableEditor.class); /** JTable to show database rows */ private JTable table; /** Use ListTableModel as table TableModel */ private ListTableModel tableModel; private Icon icon; private Icon addIcon; private Icon removeIcon; private Icon saveIcon; private Icon refreshIcon; /** Hold dirty rows */ private Set<T> dirtyModels = new HashSet<T>(); /** Entity type */ private Class<T> clazz; private String name; /** Persistent Service to use */ private Dao<T, Serializable> service; /** MessageSource */ private MessageSourceWrapper messageSource = new MessageSourceWrapper(); /** * Creates new TableEditor */ public TableEditor() { } /** * Creates new TableEditor * @param clazz entity class */ public TableEditor(Class<T> clazz) { this.clazz = clazz; } /** * Initiaze, usally called by container */ public void init() { loadIcons(); if (tableModel.getModelClass() == null) tableModel.setModelClass(this.clazz); refresh(); } /** * {@inheritDoc} */ @Override protected JComponent buildPanel() { Box box = Box.createVerticalBox(); Container tablePanel = createTablePanel(); box.add(tablePanel); box.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5)); return box; } /** * Creates a new Box with table and actions buttons * @return a new Box */ protected Container createTablePanel() { table = new JTable(tableModel, tableModel.getTableColumnModel()); table.setRowHeight(22); table.setAutoCreateRowSorter(true); tableModel.addTableModelListener(this); JScrollPane scroll = new JScrollPane(table); scroll.setAlignmentX(Container.LEFT_ALIGNMENT); Box box = Box.createVerticalBox(); JButton addButton = new JButton(new AddAction()); JButton deleteButton = new JButton(new DeleteAction()); JButton saveButton = new JButton(new SaveAction()); JButton refreshButton = new JButton(new RefreshAction()); Box buttonBox = Box.createHorizontalBox(); buttonBox.add(addButton); buttonBox.add(Box.createHorizontalStrut(5)); buttonBox.add(deleteButton); buttonBox.add(Box.createHorizontalStrut(5)); buttonBox.add(saveButton); buttonBox.add(Box.createHorizontalStrut(5)); buttonBox.add(refreshButton); buttonBox.setAlignmentX(Container.LEFT_ALIGNMENT); buttonBox.setMaximumSize(new Dimension(Short.MAX_VALUE, 25)); box.add(buttonBox); box.add(Box.createVerticalStrut(5)); box.add(scroll); return box; } /** * {@inheritDoc} */ public void doRefresh() { tableModel.setList(service.getAll()); } /** * @return header */ protected Container createHeader() { JLabel label = new JLabel(getName()); label.setAlignmentX(Container.LEFT_ALIGNMENT); Box box = Box.createHorizontalBox(); box.add(label); return box; } /** * Add a new model to the table */ public void add() { if (onAdd()) { T t = newType(); tableModel.add(t); dirtyModels.add(t); } } /** * Delete selected table rows using persistent service */ @SuppressWarnings("unchecked") public void delete() { if (onDelete()) { int[] rows = table.getSelectedRows(); for (int i : rows) { T model = (T) tableModel.getList().get(table.convertRowIndexToModel(i)); try { service.delete(model); tableModel.getList().remove(model); } catch (DataAccessException dae) { String errorMsg = messageSource.getMessage("TableEditor.objectInUse", new Object[] { model.toString() }, Locale.getDefault()); JOptionPane.showMessageDialog(getPanel(), errorMsg, "Error", JOptionPane.ERROR_MESSAGE); } } tableModel.fireTableChanged(); } } /** * Return a new instance of configured entity class * @return new entity */ private T newType() { try { return clazz.newInstance(); } catch (Exception e) { log.error("Can't instantiate class: ", e); } return null; } public JTable getTable() { return table; } public void setTable(JTable table) { this.table = table; } public ListTableModel getTableModel() { return tableModel; } public void setTableModel(ListTableModel tableModel) { this.tableModel = tableModel; } public Icon getAddIcon() { return addIcon; } public void setAddIcon(Icon addIcon) { this.addIcon = addIcon; } public Dao<T, Serializable> getService() { return service; } public void setService(Dao<T, Serializable> service) { this.service = service; } private class SaveAction extends IconAction { private static final long serialVersionUID = 1L; public SaveAction() { setIcon(saveIcon); } /* (non-Javadoc) * @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent) */ public void actionPerformed(ActionEvent e) { try { service.save(dirtyModels); } catch (DataAccessException dae) { String errorMsg = messageSource.getMessage("TableEditor.saveError", null, Locale.getDefault()); JOptionPane.showMessageDialog(getPanel(), errorMsg, "Error", JOptionPane.ERROR_MESSAGE); } finally { dirtyModels.clear(); } refresh(); } } private class AddAction extends IconAction { private static final long serialVersionUID = 1L; public AddAction() { setIcon(addIcon); } /* (non-Javadoc) * @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent) */ public void actionPerformed(ActionEvent e) { add(); } } private class DeleteAction extends IconAction { private static final long serialVersionUID = 1L; public DeleteAction() { setIcon(removeIcon); } public void actionPerformed(ActionEvent e) { delete(); } } private class RefreshAction extends BeanAction { private static final long serialVersionUID = 1L; public RefreshAction() { setIcon(refreshIcon); } public void actionPerformed(ActionEvent e) { dirtyModels.clear(); refresh(); } } public Icon getSaveIcon() { return saveIcon; } public void setSaveIcon(Icon saveIcon) { this.saveIcon = saveIcon; } @SuppressWarnings("unchecked") public void tableChanged(TableModelEvent e) { if (e.getType() == TableModelEvent.UPDATE) { int row = e.getFirstRow(); if (row >= 0) { dirtyModels.add((T) tableModel.getList().get(row)); } } } public String getName() { return name; } public void setName(String name) { this.name = name; } @Override public String toString() { return getName(); } /** * @return the icon */ public Icon getIcon() { return icon; } /** * @param icon the icon to set */ public void setIcon(Icon icon) { this.icon = icon; } protected void loadIcons() { icon = FormUtils.getIcon(icon, DEFAULT_ICON); addIcon = FormUtils.getIcon(addIcon, DEFAULT_ADD_ICON); saveIcon = FormUtils.getIcon(saveIcon, DEFAULT_SAVE_ICON); removeIcon = FormUtils.getIcon(removeIcon, DEFAULT_REMOVE_ICON); refreshIcon = FormUtils.getIcon(refreshIcon, DEFAULT_REFRESH_ICON); } /** * @return the removeIcon */ public Icon getRemoveIcon() { return removeIcon; } /** * @param removeIcon the removeIcon to set */ public void setRemoveIcon(Icon removeIcon) { this.removeIcon = removeIcon; } /** * @return the refreshIcon */ public Icon getRefreshIcon() { return refreshIcon; } /** * @param refreshIcon the refreshIcon to set */ public void setRefreshIcon(Icon refreshIcon) { this.refreshIcon = refreshIcon; } /** * @return the messageSource */ public MessageSource getMessageSource() { return messageSource.getMessageSource(); } /** * @param messageSource the messageSource to set */ @Autowired public void setMessageSource(MessageSource messageSource) { this.messageSource.setMessageSource(messageSource); } /** * Do something on add, return false to cancel * @return boolean */ protected boolean onAdd() { //Default return true return true; } /** * Do something on delete, return false to cancel * @return boolean */ protected boolean onDelete() { //Default return true return true; } }