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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* 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
* 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.
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package org.apache.cayenne.modeler.graph;
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.JComboBox;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JToolBar;
import org.apache.cayenne.configuration.DataChannelDescriptor;
import org.apache.cayenne.map.Entity;
import org.apache.cayenne.map.ObjEntity;
import org.apache.cayenne.modeler.Application;
import org.apache.cayenne.modeler.ProjectController;
import org.apache.cayenne.modeler.event.DomainDisplayEvent;
import org.apache.cayenne.modeler.event.DomainDisplayListener;
import org.apache.cayenne.modeler.event.EntityDisplayEvent;
import org.apache.cayenne.modeler.graph.action.RebuildGraphAction;
import org.apache.cayenne.modeler.graph.action.SaveAsImageAction;
import org.apache.cayenne.modeler.graph.action.ZoomInAction;
import org.apache.cayenne.modeler.graph.action.ZoomOutAction;
import org.jgraph.JGraph;
/**
* Tab for editing graphical representation of a dataDomain
*/
public class DataDomainGraphTab extends JPanel implements DomainDisplayListener,
ItemListener {
/**
* mediator instance
*/
ProjectController mediator;
/**
* Diagram selection combo
*/
JComboBox diagramCombo;
/**
* Scrollpane that the graph will be added to
*/
JScrollPane scrollPane;
/**
* Current graph
*/
JGraph graph;
/**
* Current domain
*/
DataChannelDescriptor domain;
/**
* True to invoke rebuild next time component becomes visible
*/
boolean needRebuild;
GraphRegistry graphRegistry;
public DataDomainGraphTab(ProjectController mediator) {
this.mediator = mediator;
initView();
}
private void initView() {
graphRegistry = new GraphRegistry();
needRebuild = true;
mediator.addDomainDisplayListener(this);
setLayout(new BorderLayout());
JToolBar toolbar = new JToolBar();
toolbar.setLayout(new FlowLayout(FlowLayout.LEFT, 1, 1));
GraphType[] types = GraphType.values();
String[] names = new String[types.length];
for (int i = 0; i < types.length; i++) {
names[i] = types[i].getName();
}
diagramCombo = Application.getWidgetFactory().createComboBox(names, false);
diagramCombo.addItemListener(this);
toolbar
.add(new RebuildGraphAction(this, Application.getInstance())
.buildButton());
toolbar.add(new SaveAsImageAction(this, Application.getInstance()).buildButton());
toolbar.addSeparator();
toolbar.add(new ZoomInAction(this, Application.getInstance()).buildButton());
toolbar.add(new ZoomOutAction(this, Application.getInstance()).buildButton());
toolbar.addSeparator();
toolbar.add(new JLabel("Diagram: "));
toolbar.add(diagramCombo);
add(toolbar, BorderLayout.NORTH);
scrollPane = new JScrollPane();
add(scrollPane);
}
public void currentDomainChanged(DomainDisplayEvent e) {
if (e instanceof EntityDisplayEvent) {
// selecting an event
// choose type of diagram
Entity entity = ((EntityDisplayEvent) e).getEntity();
diagramCombo.setSelectedIndex(entity instanceof ObjEntity ? 1 : 0);
refresh();
GraphBuilder builder = getGraphRegistry().getGraphMap(domain).get(
getSelectedType());
Object cell = builder.getEntityCell(entity.getName());
if (cell != null) {
graph.setSelectionCell(cell);
graph.scrollCellToVisible(cell);
}
}
else if (domain != e.getDomain()) {
needRebuild = true;
domain = e.getDomain();
if (isVisible()) {
refresh();
}
}
}
/**
* Rebuilds graph from a domain, if it is not yet built Otherwise, takes it from cache
*/
public synchronized void refresh() {
if (needRebuild && domain != null) {
graph = getGraphRegistry().loadGraph(mediator, domain, getSelectedType());
scrollPane.setViewportView(graph);
needRebuild = false;
}
}
private GraphType getSelectedType() {
return GraphType.values()[diagramCombo.getSelectedIndex()];
}
/**
* Rebuilds graph, deleting existing if needed
*/
public synchronized void rebuild() {
if (domain != null) {
JOptionPane pane = new JOptionPane(
"Rebuilding graph from domain will cause all user"
+ " changes to be lost. Continue?",
JOptionPane.QUESTION_MESSAGE,
JOptionPane.YES_NO_OPTION);
JDialog dialog = pane.createDialog(Application.getFrame(), "Confirm Rebuild");
dialog.setVisible(true);
if (pane.getValue().equals(JOptionPane.YES_OPTION)) {
graphRegistry.getGraphMap(domain).remove(getSelectedType());
itemStateChanged(null);
}
}
}
public void itemStateChanged(ItemEvent e) {
needRebuild = true;
refresh();
}
public JGraph getGraph() {
return graph;
}
GraphRegistry getGraphRegistry() {
if (graphRegistry == null) {
this.graphRegistry = new GraphRegistry();
}
return graphRegistry;
}
}