public void loadFile(String filename, Graph graph) {
try {
File fname = new File(filename);
int size = (int) fname.length();
int bytes_read = 0;
FileInputStream infile = new FileInputStream(fname);
byte[] data = new byte[size];
while (bytes_read < size) bytes_read += infile.read(data, bytes_read, size - bytes_read);
StringBufferInputStream stream = new StringBufferInputStream(new String(data, 0));
GMLlexer lexer = new GMLlexer(stream);
try {
GMLfile_ = new GMLobject(lexer, null);
GMLobject gmlgraph = GMLfile_.getGMLSubObject("graph", GMLobject.GMLlist, false);
if (gmlgraph == null) {
GMLfile_ = null;
new MessageDialog(this, "Error", "File does not contain a graph.", true);
return;
}
Graph newgraph = null;
newgraph = new Graph(gmlgraph);
graph_.copy(newgraph);
graph.copy((Graph) graph_.clone());
// graphCanvas_.update(true);
// filename_ = filename;
// setTitle_();
} catch (ParseError error) {
new MessageDialog(
this,
"Error",
error.getMessage()
+ " at line "
+ lexer.getLineNumber()
+ " at or near \""
+ lexer.getStringval()
+ "\".",
true);
return;
} catch (IOException error) {
MessageDialog dg = new MessageDialog(this, "Error", error.getMessage(), true);
return;
}
} catch (FileNotFoundException e) {
MessageDialog dg =
new MessageDialog(this, "Error", "Error loading file \"" + filename + "\".", true);
} catch (IOException e) {
MessageDialog dg = new MessageDialog(this, "Error", e.getMessage(), true);
}
}
private void applyAlgorithm_(GraphAlgorithm alg) {
if (graph_.numberOfNodes() < 1) new MessageDialog(this, "Error", "Graph is empty.", true);
else {
graph_.removeGroups(); // Remove group nodes.
graph_.pack(); // Pack the indexes.
String msg;
graphCanvas_.setWireframe(true);
msg = alg.compute(graph_, graphCanvas_);
graphCanvas_.setWireframe(false);
if (msg != null) new MessageDialog(this, "Message", msg, true);
graphCanvas_.update(true);
}
}
// mod
private Graph getGraphCopy() {
return (Graph) graph_.clone();
}
public boolean handleEvent(Event event) {
if (event.target instanceof ScrolledPanel) {
if (event.id == ScrolledPanel.RESIZE)
// RESIZE event from panel.
{
DDimension tmp_dim;
tmp_dim = viewingPanel_.getPortSize();
portScroller_.setPortSize(tmp_dim.width, tmp_dim.height);
tmp_dim = viewingPanel_.getContentSize();
portScroller_.setContentSize(tmp_dim.width, tmp_dim.height);
tmp_dim = viewingPanel_.getOffset();
portScroller_.setOffset(tmp_dim.width, tmp_dim.height);
return true;
} else if (event.id == ScrolledPanel.OFFSET) {
DDimension tmp_dim = viewingPanel_.getOffset();
portScroller_.setOffset(tmp_dim.width, tmp_dim.height);
return true;
}
} else if (event.target instanceof ViewportScroller) {
if (event.id == ViewportScroller.SCROLL) {
graphCanvas_.setWireframe(true);
viewingPanel_.scrollTo((int) portScroller_.getOffsetX(), (int) portScroller_.getOffsetY());
}
if (event.id == ViewportScroller.DONE) {
graphCanvas_.setWireframe(false);
viewingPanel_.scrollTo((int) portScroller_.getOffsetX(), (int) portScroller_.getOffsetY());
}
} else if (event.target instanceof AngleControlPanel) {
if (event.id == AngleControlPanel.ANGLE) {
DPoint angles = (DPoint) event.arg;
graphCanvas_.setWireframe(true);
graphCanvas_.setViewAngles(angles.x, angles.y);
}
if (event.id == AngleControlPanel.DONE) {
DPoint angles = (DPoint) event.arg;
graphCanvas_.setWireframe(false);
graphCanvas_.setViewAngles(angles.x, angles.y);
}
} else if (event.target instanceof GraphCanvas)
// Graph has changed.
{
if (event.id == GraphCanvas.UPDATE) {
cbmiDirected_.setState(graph_.isDirected());
}
}
// quit from Window Manager menu
else if (event.id == Event.WINDOW_DESTROY) {
Destroy();
return false;
}
// call inherited handler
return super.handleEvent(event);
}
public boolean action(Event event, Object what) {
if (event.target instanceof Checkbox) {
CheckboxGroup cbgrp = ((Checkbox) (event.target)).getCheckboxGroup();
Checkbox selected = cbgrp.getCurrent();
String label = selected.getLabel();
int mode = GraphCanvas.CREATE_NODES;
if (label.equals("Create Edges")) mode = GraphCanvas.CREATE_EDGES;
else if (label.equals("Select Nodes")) mode = GraphCanvas.SELECT_NODES;
else if (label.equals("Select Edges")) mode = GraphCanvas.SELECT_EDGES;
else if (label.equals("Select Nodes or Edges")) mode = GraphCanvas.SELECT_BOTH;
graphCanvas_.setMouseMode(mode);
} else if (event.target instanceof CheckboxMenuItem) {
String label = ((CheckboxMenuItem) (event.target)).getLabel();
boolean state = ((CheckboxMenuItem) (event.target)).getState();
if (label.equals("Scale Node Size")) graphCanvas_.scaleBounds(state);
else if (label.equals("Show Controls [s]")) {
if (state) controls_.show();
else controls_.hide();
validate();
} else if (label.equals("Directed")) graphCanvas_.setDirected(state);
else if (label.equals("Use Node ID As Default Label")) {
Node.setDefaultLabel(state);
graphCanvas_.update(false);
} else if (label.equals("High Quality Display"))
graphCanvas_.setQuality(state == false ? 1 : 2);
} else if (event.target instanceof MenuItem) {
GraphAlgorithm alg;
MenuItem menuitem = (MenuItem) event.target;
alg = (GraphAlgorithm) algHashTable_.get(menuitem);
if (alg != null) {
applyAlgorithm_(alg);
} else {
String label = menuitem.getLabel();
if (label.equals("Open Example Graph")) {
URL src = null;
try {
src = new URL(context_, "example.gml");
InputStream strm = src.openStream();
GMLlexer lexer = new GMLlexer(strm);
GMLfile_ = new GMLobject(lexer, null);
GMLobject gmlgraph = GMLfile_.getGMLSubObject("graph", GMLobject.GMLlist, false);
Graph newgraph = null;
newgraph = new Graph(gmlgraph);
graph_.copy(newgraph);
graphCanvas_.update(true);
filename_ = null;
setTitle_();
} catch (Exception e) {
new MessageDialog(this, "Error", "Error loading example graph.", true);
}
;
} else if (label.equals("Open (GML)")) {
String filename = null;
FileDialog fd;
try {
fd = new FileDialog(this, "Open VGJ File (GML)", FileDialog.LOAD);
fd.show();
} catch (Throwable e) {
MessageDialog dg =
new MessageDialog(
this, "Error", "It appears your VM does not allow file loading.", true);
return true;
}
filename = fd.getFile();
if (filename == null) return true;
filename = fd.getDirectory() + filename;
loadFile(filename);
return true;
} else if (label.equals("Save (GML)") || label.equals("Save As (GML)")) {
try {
String filename;
if (label.equals("Save As (GML)") || filename_ == null) {
FileDialog fd;
try {
fd = new FileDialog(this, "Save VGJ File (GML)", FileDialog.SAVE);
fd.show();
} catch (Throwable e) {
MessageDialog dg =
new MessageDialog(
this, "Error", "It appears your VM does not allow file saving.", true);
return true;
}
filename = fd.getFile();
if (filename == null) return true;
// Work around JDK Windows bug.
if (filename.endsWith(".*.*")) {
String tmpstr = filename.substring(0, filename.length() - 4);
filename = tmpstr;
}
filename = fd.getDirectory() + filename;
} else filename = filename_;
PrintStream ps = new PrintStream(new FileOutputStream(filename));
if (GMLfile_ == null) {
GMLfile_ = new GMLobject(null, GMLobject.GMLfile);
GMLfile_.addObjectToEnd(new GMLobject("graph", GMLobject.GMLlist));
}
GMLobject gmlgraph = GMLfile_.getGMLSubObject("graph", GMLobject.GMLlist, false);
graph_.setGMLvalues(gmlgraph);
gmlgraph.prune();
ps.println(GMLfile_.toString(0));
ps.close();
filename_ = filename;
setTitle_();
} catch (IOException e) {
MessageDialog dg = new MessageDialog(this, "Error", e.getMessage(), true);
}
} else if (label.equals("Exit This Window")) Destroy();
else if (label.startsWith("Exit Application")) System.exit(0);
else if (label.equals("Delete Selected Items")) graphCanvas_.deleteSelected(true);
else if (label.equals("Select All")) graphCanvas_.selectAll();
else if (label.equals("Remove All Edge Bends")) graphCanvas_.removeEdgeBends();
else if (label.equals("Remove All Groups")) graphCanvas_.removeGroups();
else if (label.equals("Group Control")) {
if (groupControl_ == null) groupControl_ = new GroupControl(this, graphCanvas_);
else groupControl_.showMe();
} else if (label.equals("Set New Node Properties")) graphCanvas_.setNodeProperties(true);
else if (label.equals("Set Node Spacing")) {
if (algPropDialog_ == null) algPropDialog_ = new AlgPropDialog(this, graphCanvas_);
else algPropDialog_.showMe();
} else if (label.equals("Set Font")) {
if (fontPropDialog_ == null) fontPropDialog_ = new FontPropDialog(this, graphCanvas_);
else fontPropDialog_.showMe();
} else if (label.equals("Edit Text Representation (GML)")) {
graphCanvas_.unselectItems();
GraphEdit ge = new GraphEdit(graph_, graphCanvas_);
ge.pack();
ge.show();
} else if (label.equals("PostScript Output")) {
if (psDialog_ == null) psDialog_ = new PSdialog(this, graphCanvas_);
else {
psDialog_.pack();
psDialog_.show();
}
}
}
} else if (event.target instanceof Button) {
if (((String) what).equals("Scale / 2") // mod
|| ((String) what).equals("Zoom Out") // mod
) // mod
{
// scale_ /= 2.0; // mod
scale_ /= 1.2;
graphCanvas_.setScale(scale_);
scaleLabel_.setText("Scale: " + scale_);
} else if (((String) what).equals("Scale * 2") // mod
|| ((String) what).equals("Zoom In") // mod
) // mod
{
// scale_ *= 2.0; // mod
scale_ *= 1.2;
graphCanvas_.setScale(scale_);
scaleLabel_.setText("Scale: " + scale_);
} else if (((String) what).equals("Scale = 1")) {
scale_ = 1.0;
graphCanvas_.setScale(scale_);
scaleLabel_.setText("Scale: " + scale_);
} else if (((String) what).equals("Center")) {
DDimension port_dim = viewingPanel_.getPortSize();
DDimension cont_dim = viewingPanel_.getContentSize();
double x = (cont_dim.width - port_dim.width) / 2.0;
double y = (cont_dim.height - port_dim.height) / 2.0;
viewingPanel_.scrollTo((int) x, (int) y);
portScroller_.setOffset(x, y);
} else if (((String) what).equals("Update")) {
System.out.println("Update button pressed. " + myAction);
if (myAction != null) {
System.out.println("Performing action.");
myAction.execute();
}
}
}
return true;
}
private void construct(Graph graph_in) {
algHashTable_ = new Hashtable();
algNameHashTable_ = new Hashtable();
menuHashTable_ = new Hashtable();
boolean emptyGraph = true;
if (graph_in != null && graph_in.numberOfNodes() > 0) {
emptyGraph = false;
}
// create menus
boolean directed = graph_in.isDirected();
MenuBar menubar = new MenuBar();
Menu menu = new Menu("File");
menu.add(new MenuItem("Open (GML)"));
menu.add(new MenuItem("Save (GML)"));
menu.add(new MenuItem("Save As (GML)"));
menu.add(new MenuItem("-"));
menu.add(new MenuItem("Open Example Graph"));
menu.add(new MenuItem("-"));
menu.add(new MenuItem("PostScript Output"));
menu.add(new MenuItem("-"));
menu.add(new MenuItem("Exit This Window"));
menu.add(new MenuItem("Exit Application (and COUGAAR Node)"));
menubar.add(menu);
algorithmMenu_ = new Menu("Algorithms");
menubar.add(algorithmMenu_);
menu = new Menu("Edit");
menu.add(new MenuItem("Edit Text Representation (GML)"));
menu.add(new MenuItem("Delete Selected Items"));
menu.add(new MenuItem("Select All"));
menu.add(new MenuItem("Remove All Edge Bends"));
menu.add(new MenuItem("Remove All Groups"));
menu.add(new MenuItem("Group Control"));
menubar.add(menu);
menu = new Menu("Properties");
showControls_ = new CheckboxMenuItem("Show Controls [s]");
showControls_.setState(true);
// showControls_.setState(false);
menu.add(showControls_);
CheckboxMenuItem cbmi = new CheckboxMenuItem("Directed");
cbmiDirected_ = cbmi;
if (directed) cbmi.setState(true);
menu.add(cbmi);
menu.add(new MenuItem("Set New Node Properties"));
menu.add(new MenuItem("Set Node Spacing"));
menu.add(new MenuItem("Set Font"));
cbmi = new CheckboxMenuItem("Scale Node Size");
cbmi.setState(true);
menu.add(cbmi);
cbmi = new CheckboxMenuItem("Use Node ID As Default Label");
cbmi.setState(true);
menu.add(cbmi);
cbmi = new CheckboxMenuItem("High Quality Display");
// cbmi.setState(false);
cbmi.setState(true);
menu.add(cbmi);
menubar.add(menu);
setMenuBar(menubar);
setLayout(new BorderLayout());
// panel for controls
LPanel p = new LPanel();
LPanel smallPanel = new LPanel(); // mod
LPanel p1 = new LPanel(); // mod
// let's try this
p1.setLayout(new FlowLayout()); // mod
p1.addButton("Update", 1, -1, 1.0, 1.0, 0, 0); // mod
smallPanel.addButton("Update", 1, -1, 1.0, 1.0, 0, 0); // mod
p.addLineLabel("Mouse Action:", 0);
CheckboxGroup mode_group = new CheckboxGroup();
p.constraints.insets.bottom = 0;
p.addCheckbox("Create Nodes", mode_group, emptyGraph, 1, -1, 1.0, 1.0, 0, 0);
p.addCheckbox("Create Edges", mode_group, false, 0, -1, 1.0, 1.0, 0, 0);
p.constraints.insets.top = p.constraints.insets.bottom = 0;
p.addCheckbox("Select Nodes", mode_group, !emptyGraph, 1, -1, 1.0, 1.0, 0, 0);
p.addCheckbox("Select Edges", mode_group, false, 0, -1, 1.0, 1.0, 0, 0);
p.constraints.insets.top = p.constraints.insets.bottom = 0;
p.addCheckbox("Select Nodes or Edges", mode_group, false, 0, -1, 1.0, 1.0, 0, 0);
p1.add(p); // mod
p = new LPanel(); // mod
portScroller_ = new ViewportScroller(90, 90, 500.0, 500.0, 400.0, 400.0, 0.0, 0.0);
portScroller_.setBackground(Color.lightGray);
p.constraints.insets.bottom = 0;
p.addLabel("Viewing Offset", 0, 0, 1.0, 1.0, 0, 0);
p.constraints.insets.top = p.constraints.insets.bottom = 0;
p.addComponent(portScroller_, 0, 0, 1.0, 1.0, 0, 0);
p.constraints.insets.top = p.constraints.insets.bottom = 0;
p.addButton("Center", 0, 0, 1.0, 1.0, 0, 0);
p1.add(p); // mod
p = new LPanel(); // mod
scaleLabel_ = p.addLineLabel("Scale: 1", 0);
LPanel sp = new LPanel();
sp.spacing = 0;
sp.constraints.insets.top = sp.constraints.insets.bottom = 0;
// sp.addButton("Scale / 2", 1, -1, 1.0, 1.0, 0, 0); // mod
sp.addButton("Zoom In", 1, -1, 1.0, 1.0, 0, 0); // mod
sp.addButton("Scale = 1", 1, -1, 1.0, 1.0, 0, 0);
// sp.addButton("Scale * 2", 0, -1, 1.0, 1.0, 0, 0); // mod
sp.addButton("Zoom Out", 0, -1, 1.0, 1.0, 0, 0); // mod
sp.finish();
p.addComponent(sp, 0, 0, 1.0, 1.0, 0, 0);
p1.add(p); // mod
p = new LPanel(); // mod
p.constraints.insets.top = 0;
AngleControlPanel angc = new AngleControlPanel(180, 76);
p.addComponent(angc, 0, 0, 1.0, 1.0, 1, 0);
p1.add(p); // mod
p = p1; // mod
// super panel is there just to allow controls to be
// fixed to top instead of centered
// Panel controls_superpanel = new Panel();
JPanel controls_superpanel = new JPanel();
controls_superpanel.add("North", p);
p.finish();
// add("West", controls_superpanel);
if (wantSmallPanel) {
add("South", smallPanel); // mod
controls_ = smallPanel; // mod
} else {
add("South", controls_superpanel); // mod
controls_ = controls_superpanel;
}
if (!showControls_.getState()) {
controls_.hide();
} else {
controls_.show();
}
graph_ = graph_in;
// Node.defaults.setBoundingBox(20, 20, 20);
// Node.defaults.setBoundingBox(10, 10, 10);
Node.defaults.setBoundingBox(130, 90, 130);
// the graph viewing canvas
graphCanvas_ = new GraphCanvas(graph_, this);
if (!emptyGraph) {
graphCanvas_.setMouseMode(GraphCanvas.SELECT_NODES);
}
// the graph viewing panel (canvas and scrollbars)
viewingPanel_ = new ScrolledPanel(graphCanvas_);
add("Center", viewingPanel_);
setBackground(Color.lightGray);
validate();
addKeyListener(
new KeyAdapter() {
public void keyReleased(KeyEvent e) {
System.out.println("in GW.keyReleased");
if (e.getKeyChar() == 's' || e.getKeyChar() == 'S') {
System.out.println("Keyrelease " + e.getKeyChar() + ".");
showControls_.setState(!showControls_.getState());
}
if (showControls_.getState()) controls_.show();
else controls_.hide();
validate();
}
});
}