/*
* Licensed Materials - Property of Rogue Wave Software, Inc.
* © Copyright Rogue Wave Software, Inc. 2014, 2015
* © Copyright IBM Corp. 2009, 2014
* © Copyright ILOG 1996, 2009
* All Rights Reserved.
*
* Note to U.S. Government Users Restricted Rights:
* The Software and Documentation were developed at private expense and
* are "Commercial Items" as that term is defined at 48 CFR 2.101,
* consisting of "Commercial Computer Software" and
* "Commercial Computer Software Documentation", as such terms are
* used in 48 CFR 12.212 or 48 CFR 227.7202-1 through 227.7202-4,
* as applicable.
*/
import ilog.views.IlvGrapher;
import ilog.views.IlvManager;
import ilog.views.IlvGraphic;
import ilog.views.IlvHandlesSelection;
import ilog.views.IlvManagerView;
import ilog.views.IlvTransformer;
import ilog.views.IlvLabelInterface;
import ilog.views.event.ManagerSelectionListener;
import ilog.views.event.ManagerSelectionChangedEvent;
import ilog.views.interactor.IlvSelectInteractor;
import ilog.views.interactor.IlvZoomViewInteractor;
import ilog.views.accelerator.IlvDeleteSelectionAccelerator;
import ilog.views.swing.IlvJScrollManagerView;
import ilog.views.swing.IlvJManagerViewControlBar;
import ilog.views.graphlayout.IlvGraphLayout;
import ilog.views.graphlayout.IlvGraphLayoutReport;
import ilog.views.graphlayout.IlvGraphLayoutException;
import ilog.views.graphlayout.GraphLayoutEvent;
import ilog.views.graphlayout.GraphLayoutEventListener;
import ilog.views.graphlayout.bus.IlvBusLayout;
import ilog.views.util.IlvLocaleUtil;
import ilog.views.util.IlvProductUtil;
import ilog.views.util.IlvResourceUtil;
import ilog.views.util.swing.IlvSwingUtil;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.text.*;
import javax.swing.*;
/**
* This is a very simple applet/application that uses the
* <code>IlvGrapher</code> to perform a bus layout.
* It shows how to use bus layout in applications that are not based
* on CSS styling.
*/
public class BusLayoutApplet extends JApplet
implements ManagerSelectionListener
{
static {
// This applet is designed to run only with default resource bundle
// and various selected other resource bundles.
// Setting the available resource suffixes avoids that the applet
// tries to load resource bundles for other locales over the net,
// even if the current locale of the browser is different.
if (IlvResourceUtil.isInApplet())
IlvResourceUtil.setAvailableResourceSuffixes("", "_ja");
// Test code whether the demo works in RTL locales
// Locale newLocale = new Locale("he");
// IlvSwingUtil.setDefaultLocale(newLocale);
}
{
// This sample uses JViews Diagrammer features. When deploying an
// application that includes this code, you need to be in possession
// of a JViews Diagrammer Deployment license.
IlvProductUtil.DeploymentLicenseRequired(
IlvProductUtil.JViews_Diagrammer_Deployment);
}
/** The grapher */
IlvGrapher grapher = new IlvGrapher();
/** The view of the grapher */
IlvManagerView mgrview = new IlvManagerView(grapher);
/** An instance of the Bus Layout algorithm */
IlvBusLayout layout = new MyBusLayout();
/** A graph layout event listener */
LayoutIterationListener layoutListener = new LayoutIterationListener();
/** A text field to display messages */
JTextField msgLine = new JTextField();
/**
* Initializes the applet/application.
*/
public void init()
{
showMessage(getString("InitMessage"));
super.init();
// attach the grapher to the layout instance
layout.attach(grapher);
// specify the ordering option for the bus layout
layout.setNodeComparator(IlvBusLayout.ASCENDING_INDEX);
// specify the alignment option
layout.setGlobalVerticalAlignment(IlvBusLayout.CENTER);
// no need to pay the price of these checks in our case,
// because we know the type of the links and the link connector
// is appropriate for this layout
layout.getGraphModel().setLinkCheckEnabled(false);
layout.getGraphModel().setConnectionPointCheckEnabled(false);
// install the layout iteration listener on the layout instance
layout.addGraphLayoutEventListener(layoutListener);
// create the scroll manager view
IlvJScrollManagerView scrollManView = new IlvJScrollManagerView(mgrview);
// allow the user to delete nodes by pressing the "del" key
grapher.addAccelerator(new IlvDeleteSelectionAccelerator(
KeyEvent.KEY_PRESSED, KeyEvent.VK_DELETE, 0));
// listen the selection events
grapher.addManagerSelectionListener(this);
// Some settings on the manager view and on the scroll manager view
mgrview.setAntialiasing(true);
mgrview.setKeepingAspectRatio(true);
mgrview.setBackground(Color.white);
mgrview.setForeground(SystemColor.windowText);
Color xc = SystemColor.windowText;
xc = new Color(255-xc.getRed(), 255-xc.getGreen(), 255-xc.getBlue());
mgrview.setDefaultXORColor(xc);
mgrview.setDefaultGhostColor(SystemColor.windowText);
mgrview.setZoomFactorRange(0.02, 10.0);
mgrview.setWheelZoomingEnabled(true);
scrollManView.setWheelScrollingEnabled(true);
// Settings parameters for selection handles
IlvHandlesSelection.defaultHandleColor = Color.black;
IlvHandlesSelection.defaultHandleBackgroundColor = Color.white;
IlvHandlesSelection.defaultHandleShape = IlvHandlesSelection.SQUARE_SHAPE;
// create the standard control bar
IlvJManagerViewControlBar controlBar = new IlvJManagerViewControlBar();
controlBar.setView(mgrview);
// modify the interactors such that the demo looks better
((IlvSelectInteractor)controlBar.getSelectInteractor()).setOpaqueMove(true);
((IlvSelectInteractor)controlBar.getSelectInteractor()).setOpaqueResize(true);
((IlvZoomViewInteractor)controlBar.getZoomViewInteractor()).setPermanent(true);
// set the initial interactor
mgrview.setInteractor(controlBar.getSelectInteractor());
// create the graph selector
JComboBox fileSelector = new JComboBox();
fileSelector.addItem("small");
fileSelector.addItem("medium");
fileSelector.addItem("large");
fileSelector.setToolTipText(getString("fileSelector.Tooltip"));
fileSelector.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
JComboBox comboBox = (JComboBox)event.getSource();
String fileName = (String)comboBox.getSelectedItem();
loadGrapher(fileName);
}
});
// create the layout button
JButton layoutButton = new JButton(getString("layoutButton.Label"));
layoutButton.setToolTipText(getString("layoutButton.Tooltip"));
layoutButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
layout(layout);
}});
// create the panel for the layout buttons
JPanel layoutButtonPanel = new JPanel();
layoutButtonPanel.setLayout(new FlowLayout());
layoutButtonPanel.add(layoutButton);
addFurtherCheckboxes(layoutButtonPanel);
// create the top panel with the toolbar and the file selector
JPanel topPanel = new JPanel();
topPanel.setLayout(new FlowLayout(FlowLayout.LEADING));
topPanel.add(controlBar);
topPanel.add(new JLabel(getString("fileSelector.Label")));
topPanel.add(fileSelector);
// create the bottom panel with the layout buttons and the message line
JPanel bottomPanel = new JPanel();
bottomPanel.setLayout(new BorderLayout());
bottomPanel.add(layoutButtonPanel, BorderLayout.NORTH);
bottomPanel.add(createParameterPanel(), BorderLayout.CENTER);
bottomPanel.add(msgLine, BorderLayout.SOUTH);
msgLine.setEditable(false);
// put manager view, top panel and bottom panel together
getContentPane().setLayout(new BorderLayout(0, 0));
getContentPane().add(scrollManView, BorderLayout.CENTER);
getContentPane().add(topPanel, BorderLayout.NORTH);
getContentPane().add(bottomPanel, BorderLayout.SOUTH);
// set the component orientation according to the locale
Locale loc = IlvSwingUtil.getDefaultLocale();
ComponentOrientation co = ComponentOrientation.getOrientation(loc);
getContentPane().applyComponentOrientation(co);
// load a sample grapher
loadGrapher("small");
}
/**
* Called when this applet is being reclaimed in order to destroy
* any resources that it has allocated.
*/
public void destroy()
{
super.destroy();
// This method is intended to workaround memory management issues
// in the Sun JRE. Please refer to the method documentation for more
// details and a description of the known issues.
IlvSwingUtil.cleanupApplet();
}
/**
* Adds further checkboxes near the layout button.
*/
private void addFurtherCheckboxes(JPanel panel)
{
// some space
panel.add(new JLabel(" "));
JCheckBox incrementalOption =
new JCheckBox(getString("incrementalMode.Checkbox.Label"), false);
panel.add(incrementalOption);
incrementalOption.setToolTipText(
getString("incrementalMode.Checkbox.Tooltip"));
incrementalOption.addItemListener(new ItemListener() {
public void itemStateChanged(ItemEvent e) {
layout.setIncrementalMode(e.getStateChange() == ItemEvent.SELECTED);
}
});
JCheckBox preserveFixedNodesOption =
new JCheckBox(getString("fixSelectedNodes.Checkbox.Label"), false);
panel.add(preserveFixedNodesOption);
preserveFixedNodesOption.setToolTipText(
getString("fixSelectedNodes.Checkbox.Tooltip"));
preserveFixedNodesOption.addItemListener(new ItemListener() {
public void itemStateChanged(ItemEvent e) {
layout.setPreserveFixedNodes(e.getStateChange() == ItemEvent.SELECTED);
}
});
}
/**
* Creates the layout parameter panel.
*/
private JPanel createParameterPanel()
{
JPanel panel = new JPanel();
panel.setLayout(new GridLayout(4, 2));
// alignment paranter
JComboBox vAlignmentSelector = new JComboBox();
panel.add(new JLabel(getString("vAlignment.Label")));
panel.add(vAlignmentSelector);
vAlignmentSelector.setToolTipText(getString("vAlignment.Tooltip"));
vAlignmentSelector.addItem(getString("vAlignment.CenterMode"));
vAlignmentSelector.addItem(getString("vAlignment.TopMode"));
vAlignmentSelector.addItem(getString("vAlignment.BottomMode"));
vAlignmentSelector.setSelectedIndex(0);
vAlignmentSelector.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
JComboBox comboBox = (JComboBox)event.getSource();
String alignment = (String)comboBox.getSelectedItem();
setVerticalAlignment(alignment);
}
});
// ordering of the nodes
JComboBox orderSelector = new JComboBox();
panel.add(new JLabel(getString("orderSelector.Label")));
panel.add(orderSelector);
orderSelector.setToolTipText(getString("orderSelector.Tooltip"));
orderSelector.addItem(getString("orderSelector.NoneMode"));
orderSelector.addItem(getString("orderSelector.AscLabelMode"));
orderSelector.addItem(getString("orderSelector.DecLabelMode"));
orderSelector.addItem(getString("orderSelector.AscWidthMode"));
orderSelector.addItem(getString("orderSelector.DesWidthMode"));
orderSelector.addItem(getString("orderSelector.AscHeightMode"));
orderSelector.addItem(getString("orderSelector.DesHeightMode"));
orderSelector.addItem(getString("orderSelector.AscAreaMode"));
orderSelector.addItem(getString("orderSelector.DesAreaMode"));
orderSelector.setSelectedIndex(1); // that is ascending label
orderSelector.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
JComboBox comboBox = (JComboBox)event.getSource();
String ordering = (String)comboBox.getSelectedItem();
setNodeComparator(ordering);
}
});
// flow direction parameter
JComboBox flowDirectionSelector = new JComboBox();
panel.add(new JLabel(getString("flowDirectionSelector.Label")));
panel.add(flowDirectionSelector);
flowDirectionSelector.addItem(getString("flowDirectionSelector.LTRMode"));
flowDirectionSelector.addItem(getString("flowDirectionSelector.AlternateMode"));
flowDirectionSelector.setSelectedIndex(0);
flowDirectionSelector.setToolTipText(
getString("flowDirectionSelector.Tooltip"));
flowDirectionSelector.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
JComboBox comboBox = (JComboBox)event.getSource();
String flow = (String)comboBox.getSelectedItem();
setFlowDirection(flow);
}
});
// node above/below bus parameter
JComboBox nodePositionSelector = new JComboBox();
panel.add(new JLabel(getString("nodePositionSelector.Label")));
panel.add(nodePositionSelector);
nodePositionSelector.addItem(getString("nodePositionSelector.AboveBusMode"));
nodePositionSelector.addItem(getString("nodePositionSelector.BelowBusMode"));
nodePositionSelector.setSelectedIndex(0);
nodePositionSelector.setToolTipText(
getString("nodePositionSelector.Tooltip"));
nodePositionSelector.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
JComboBox comboBox = (JComboBox)event.getSource();
String position = (String)comboBox.getSelectedItem();
setNodePosition(position);
}
});
return panel;
}
/**
* Sets the vertical node alignment.
*/
private void setVerticalAlignment(String alignment)
{
if (alignment.equals(getString("vAlignment.CenterMode")))
layout.setGlobalVerticalAlignment(IlvBusLayout.CENTER);
else if (alignment.equals(getString("vAlignment.TopMode")))
layout.setGlobalVerticalAlignment(IlvBusLayout.TOP);
else if (alignment.equals(getString("vAlignment.BottomMode")))
layout.setGlobalVerticalAlignment(IlvBusLayout.BOTTOM);
}
/**
* Sets the node ordering mode.
*/
private void setNodeComparator(String ordering)
{
if (ordering.equals(getString("orderSelector.NoneMode")))
layout.setNodeComparator(null);
else if (ordering.equals(getString("orderSelector.AscLabelMode")))
layout.setNodeComparator(IlvBusLayout.ASCENDING_INDEX);
else if (ordering.equals(getString("orderSelector.DecLabelMode")))
layout.setNodeComparator(IlvBusLayout.DESCENDING_INDEX);
else if (ordering.equals(getString("orderSelector.AscWidthMode")))
layout.setNodeComparator(IlvBusLayout.ASCENDING_WIDTH);
else if (ordering.equals(getString("orderSelector.DesWidthMode")))
layout.setNodeComparator(IlvBusLayout.DESCENDING_WIDTH);
else if (ordering.equals(getString("orderSelector.AscHeightMode")))
layout.setNodeComparator(IlvBusLayout.ASCENDING_HEIGHT);
else if (ordering.equals(getString("orderSelector.DesHeightMode")))
layout.setNodeComparator(IlvBusLayout.DESCENDING_HEIGHT);
else if (ordering.equals(getString("orderSelector.AscAreaMode")))
layout.setNodeComparator(IlvBusLayout.ASCENDING_AREA);
else if (ordering.equals(getString("orderSelector.DesAreaMode")))
layout.setNodeComparator(IlvBusLayout.DESCENDING_AREA);
}
/**
* Sets the flow direction of nodes.
*/
private void setFlowDirection(String flow)
{
if (flow.equals(getString("flowDirectionSelector.LTRMode")))
layout.setFlowDirection(IlvBusLayout.LEFT_TO_RIGHT);
else if (flow.equals(getString("flowDirectionSelector.AlternateMode")))
layout.setFlowDirection(IlvBusLayout.ALTERNATE);
}
/**
* Sets the node position.
*/
private void setNodePosition(String position)
{
if (position.equals(getString("nodePositionSelector.BelowBusMode")))
layout.setNodePosition(IlvBusLayout.NODES_BELOW_BUS);
else if (position.equals(getString("nodePositionSelector.AboveBusMode")))
layout.setNodePosition(IlvBusLayout.NODES_ABOVE_BUS);
}
/**
* Performs the layout of the graph.
*/
private void layout(IlvGraphLayout layout)
{
// the layout report instance; this is an object in which
// the layout algorithm stores information about its behavior
IlvGraphLayoutReport layoutReport = null;
showMessage(getString("LayoutStartMessage"));
// initialize the iteration listener
layoutListener.initialize();
try {
// perform the layout and get the layout report
layoutReport = layout.performLayout(false, false);
// print the code from the layout report
showMessage(getString("LayoutDoneMessage"),
layoutReport.codeToString(layoutReport.getCode(),
IlvLocaleUtil.getCurrentULocale()));
}
catch (IlvGraphLayoutException e) {
// e.printStackTrace();
showMessage(e.getMessage());
} finally {
if (layoutReport != null &&
layoutReport.getCode() != IlvGraphLayoutReport.NOT_NEEDED) {
// show all
mgrview.repaint();
}
}
}
/**
* Implementation of ilog.views.event.ManagerSelectionListener.
* It allows us to change the "fixed" attribute of the nodes
* according to selection.
* @param event the "selection changed" event.
* @see IlvManager#addManagerSelectionListener
* @see IlvManager#removeManagerSelectionListener
* @see IlvManager#selectionChanged
*/
public void selectionChanged(ManagerSelectionChangedEvent event)
{
IlvGraphic obj = event.getGraphic();
if (grapher.isNode(obj))
layout.setFixed(obj, grapher.isSelected(obj));
}
/**
* Load a sample IVL file.
* @param fileNameBase The base of the filename, excluding the path prefix
* and the extension suffix.
*/
private void loadGrapher(String fileNameBase)
{
try {
showMessage(getString("FileReadingStartMessage"), fileNameBase);
grapher.deleteAll(false);
grapher.read(
IlvSwingUtil.getRelativeURL(this, "data/" + fileNameBase + ".ivl"));
// the transformer may have been modified, so
// we set the identity transformer
mgrview.setTransformer(new IlvTransformer());
grapher.reDraw();
showMessage(getString("FileReadingDoneMessage"), fileNameBase);
} catch (Exception e) {
// e.printStackTrace();
showMessage(e.getMessage());
}
}
/**
* Displays a message.
*/
void showMessage(String message)
{
// the message is displayed in the message line
msgLine.setText(message);
msgLine.paintImmediately(0, 0, msgLine.getWidth(), msgLine.getHeight());
}
void showMessage(String msgformat, Object val)
{
Object[] args = { val };
showMessage(MessageFormat.format(msgformat, args));
}
/**
* Returns a string.
*/
static String getString(String key)
{
return IlvResourceUtil.getString(key, BusLayoutApplet.class);
}
/**
* Allows you to run the demo as a standalone application.
*/
public static void main(String[] arg)
{
// Sun recommends that to put the entire GUI initialization into the
// AWT thread
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
BusLayoutApplet applet = new BusLayoutApplet();
applet.init();
JFrame frame = new JFrame(getString("Frame.Label"));
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(500, 600);
frame.getContentPane().add(applet);
frame.setVisible(true);
}
});
}
// -------------------------------------------------------------------------
/**
* A graph layout iteration listener. Implementing the interface
* GraphLayoutEventListener gives you the possibility to receive
* during the layout information about the behavior of the layout
* algorithm. This information is contained in the graph layout event.
*
* In our case, we will simply print a dot each time the method
* layoutStepPerformed is called, that is after each iteration of
* the Bus Layout algorithm.
*/
class LayoutIterationListener
implements GraphLayoutEventListener
{
private String toShow = "";
private static final int MAX_LENGTH = 50;
/**
* This method is automatically called by the layout algorithm.
*/
public void layoutStepPerformed(GraphLayoutEvent event)
{
// the status area has a limited width, so we are forced to
// reinitialize the message string
if (toShow.length() > MAX_LENGTH)
toShow = "";
toShow += ".";
showMessage(toShow);
}
/**
* Initialize the listener by reseting the toShow variable.
* This method must be called before the layout is started.
*/
void initialize()
{
toShow = "";
}
}
}
/**
* A subclass of IlvBusLayout that overrides the method
* getIndex in order to return the value of the label of the node.
* This allows the nodes to be order in ascending order of their label.
* The same can be achieved using the method setIndex, but this is less
* efficient.
*/
final class MyBusLayout
extends IlvBusLayout
{
public int getIndex(Object node)
{
if (node instanceof IlvLabelInterface) {
String label = ((IlvLabelInterface)node).getLabel();
return Integer.valueOf(label).intValue();
} else
return 0;
}
}