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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing,
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* KIND, either express or implied. See the License for the
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package org.apache.cayenne.modeler.editor.dbentity;
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.EventObject;
import javax.swing.ComboBoxModel;
import javax.swing.DefaultCellEditor;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.JToolBar;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableColumn;
import org.apache.cayenne.map.DataMap;
import org.apache.cayenne.map.DbEntity;
import org.apache.cayenne.map.DbRelationship;
import org.apache.cayenne.map.Entity;
import org.apache.cayenne.map.event.DbEntityListener;
import org.apache.cayenne.map.event.DbRelationshipListener;
import org.apache.cayenne.map.event.EntityEvent;
import org.apache.cayenne.map.event.RelationshipEvent;
import org.apache.cayenne.modeler.Application;
import org.apache.cayenne.modeler.ProjectController;
import org.apache.cayenne.modeler.action.CreateObjEntityAction;
import org.apache.cayenne.modeler.action.CreateRelationshipAction;
import org.apache.cayenne.modeler.action.DbEntitySyncAction;
import org.apache.cayenne.modeler.action.RemoveRelationshipAction;
import org.apache.cayenne.modeler.dialog.ResolveDbRelationshipDialog;
import org.apache.cayenne.modeler.editor.ExistingSelectionProcessor;
import org.apache.cayenne.modeler.event.DbEntityDisplayListener;
import org.apache.cayenne.modeler.event.EntityDisplayEvent;
import org.apache.cayenne.modeler.event.RelationshipDisplayEvent;
import org.apache.cayenne.modeler.util.CayenneTable;
import org.apache.cayenne.modeler.util.CayenneWidgetFactory;
import org.apache.cayenne.modeler.util.CellRenderers;
import org.apache.cayenne.modeler.util.ModelerUtil;
import org.apache.cayenne.modeler.util.PanelFactory;
import org.apache.cayenne.modeler.util.UIUtil;
import org.apache.cayenne.util.CayenneMapEntry;
/**
* Displays DbRelationships for the current DbEntity.
*
* @author Michael Misha Shengaout
* @author Andrus Adamchik
*/
public class DbEntityRelationshipTab extends JPanel implements DbEntityDisplayListener,
DbEntityListener, DbRelationshipListener, ExistingSelectionProcessor,
ListSelectionListener, TableModelListener {
protected ProjectController mediator;
protected CayenneTable table;
protected JButton resolve;
public DbEntityRelationshipTab(ProjectController mediator) {
this.mediator = mediator;
this.mediator.addDbEntityDisplayListener(this);
this.mediator.addDbEntityListener(this);
this.mediator.addDbRelationshipListener(this);
init();
resolve.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
resolveRelationship();
}
});
}
protected void init() {
this.setLayout(new BorderLayout());
JToolBar toolBar = new JToolBar();
Application app = Application.getInstance();
toolBar.add(app.getAction(CreateObjEntityAction.getActionName()).buildButton());
toolBar
.add(app
.getAction(CreateRelationshipAction.getActionName())
.buildButton());
toolBar.add(app.getAction(DbEntitySyncAction.getActionName()).buildButton());
toolBar.addSeparator();
resolve = new JButton();
resolve.setIcon(ModelerUtil.buildIcon("icon-info.gif"));
resolve.setToolTipText("Database Mapping");
toolBar.add(resolve);
toolBar.addSeparator();
toolBar
.add(app
.getAction(RemoveRelationshipAction.getActionName())
.buildButton());
add(toolBar, BorderLayout.NORTH);
table = new CayenneTable();
table.setDefaultRenderer(DbEntity.class, new EntityRenderer());
add(PanelFactory.createTablePanel(table, null), BorderLayout.CENTER);
}
public void valueChanged(ListSelectionEvent e) {
processExistingSelection(e);
}
public void tableChanged(TableModelEvent e) {
DbRelationship rel = null;
if (table.getSelectedRow() >= 0) {
DbRelationshipTableModel model = (DbRelationshipTableModel) table.getModel();
rel = model.getRelationship(table.getSelectedRow());
resolve.setEnabled(rel.getTargetEntity() != null);
}
}
/**
* Selects a specified relationship in the relationships table.
*/
public void selectRelationship(DbRelationship rel) {
if (rel == null) {
Application
.getInstance()
.getAction(RemoveRelationshipAction.getActionName())
.setEnabled(false);
return;
}
// enable the remove button
Application
.getInstance()
.getAction(RemoveRelationshipAction.getActionName())
.setEnabled(true);
DbRelationshipTableModel model = (DbRelationshipTableModel) table.getModel();
java.util.List rels = model.getObjectList();
int relPos = rels.indexOf(rel);
if (relPos >= 0) {
table.select(relPos);
}
}
public void processExistingSelection(EventObject e) {
if (e instanceof ChangeEvent) {
table.clearSelection();
}
DbRelationship rel = null;
if (table.getSelectedRow() >= 0) {
DbRelationshipTableModel model;
model = (DbRelationshipTableModel) table.getModel();
rel = model.getRelationship(table.getSelectedRow());
resolve.setEnabled(rel.getTargetEntity() != null);
// scroll table
UIUtil.scrollToSelectedRow(table);
}
else
resolve.setEnabled(false);
RelationshipDisplayEvent ev = new RelationshipDisplayEvent(this, rel, mediator
.getCurrentDbEntity(), mediator.getCurrentDataMap(), mediator
.getCurrentDataDomain());
mediator.fireDbRelationshipDisplayEvent(ev);
}
private void resolveRelationship() {
int row = table.getSelectedRow();
if (row < 0) {
return;
}
// Get DbRelationship
DbRelationshipTableModel model = (DbRelationshipTableModel) table.getModel();
DbRelationship rel = model.getRelationship(row);
ResolveDbRelationshipDialog dialog = new ResolveDbRelationshipDialog(rel);
dialog.setVisible(true);
dialog.dispose();
}
/** Loads obj relationships into table. */
public void currentDbEntityChanged(EntityDisplayEvent e) {
DbEntity entity = (DbEntity) e.getEntity();
if (entity != null && e.isEntityChanged()) {
// TODO: this line seems to slow down the Modeler significantly sometimes
// (esp. noticable if selected entity has no relationships!),
// even when this tab is not showing...maybe we should simply mark the view as
// dirty and rebuild it when it becomes visible
rebuildTable(entity);
}
// if an entity was selected on a tree,
// unselect currently selected row
if (e.isUnselectAttributes()) {
table.clearSelection();
}
}
protected void rebuildTable(DbEntity entity) {
DbRelationshipTableModel model = new DbRelationshipTableModel(
entity,
mediator,
this);
model.addTableModelListener(this);
table.setModel(model);
table.setRowHeight(25);
table.setRowMargin(3);
TableColumn col = table.getColumnModel().getColumn(DbRelationshipTableModel.NAME);
col.setMinWidth(150);
col = table.getColumnModel().getColumn(DbRelationshipTableModel.TARGET);
col.setMinWidth(150);
JComboBox combo = CayenneWidgetFactory.createComboBox();
combo.setRenderer(CellRenderers.entityListRendererWithIcons(entity.getDataMap()));
combo.setModel(createComboModel());
combo.setEditable(false);
col.setCellEditor(new DefaultCellEditor(combo));
table.getSelectionModel().addListSelectionListener(this);
}
public void dbEntityChanged(EntityEvent e) {
}
public void dbEntityAdded(EntityEvent e) {
reloadEntityList(e);
}
public void dbEntityRemoved(EntityEvent e) {
reloadEntityList(e);
}
public void dbRelationshipChanged(RelationshipEvent e) {
if (e.getSource() != this) {
if (!(table.getModel() instanceof DbRelationshipTableModel)) {
rebuildTable((DbEntity) e.getEntity());
}
table.select(e.getRelationship());
DbRelationshipTableModel model = (DbRelationshipTableModel) table.getModel();
model.fireTableDataChanged();
}
}
public void dbRelationshipAdded(RelationshipEvent e) {
rebuildTable((DbEntity) e.getEntity());
table.select(e.getRelationship());
}
public void dbRelationshipRemoved(RelationshipEvent e) {
DbRelationshipTableModel model = (DbRelationshipTableModel) table.getModel();
int ind = model.getObjectList().indexOf(e.getRelationship());
model.removeRelationship(e.getRelationship());
table.select(ind);
}
/**
* Refresh the list of db entities (targets). Also refresh the table in case some db
* relationships were deleted.
*/
private void reloadEntityList(EntityEvent e) {
if (e.getSource() == this)
return;
// If current model added/removed, do nothing.
if (mediator.getCurrentDbEntity() == e.getEntity())
return;
// If this is just loading new currentDbEntity, do nothing
if (mediator.getCurrentDbEntity() == null)
return;
TableColumn col = table.getColumnModel().getColumn(
DbRelationshipTableModel.TARGET);
DefaultCellEditor editor = (DefaultCellEditor) col.getCellEditor();
JComboBox combo = (JComboBox) editor.getComponent();
combo.setModel(createComboModel());
DbRelationshipTableModel model = (DbRelationshipTableModel) table.getModel();
model.fireTableDataChanged();
table.getSelectionModel().addListSelectionListener(this);
}
/**
* Creates a list of DbEntities.
*/
private ComboBoxModel createComboModel() {
DataMap map = mediator.getCurrentDataMap();
Object[] objects = map.getNamespace().getDbEntities().toArray();
return new DefaultComboBoxModel(objects);
}
class EntityRenderer extends DefaultTableCellRenderer {
public Component getTableCellRendererComponent(
JTable table,
Object value,
boolean isSelected,
boolean hasFocus,
int row,
int column) {
if (value instanceof CayenneMapEntry) {
CayenneMapEntry mapObject = (CayenneMapEntry) value;
String label = mapObject.getName();
if (mapObject instanceof Entity) {
Entity entity = (Entity) mapObject;
// for different namespace display its name
DataMap dataMap = entity.getDataMap();
if (dataMap != null && dataMap != mediator.getCurrentDataMap()) {
label += " (" + dataMap.getName() + ")";
}
}
value = label;
}
super.getTableCellRendererComponent(
table,
value,
isSelected,
hasFocus,
row,
column);
return this;
}
}
}