public void lostFocus() {
setBorder(null);
context.getTextEditor().setText("");
context.getTextEditor().setEnabled(false);
context.getTextEditor().removeFocusListener(this);
context.getTextEditor().removeKeyListener(this);
context.setFocused(null);
}
/**
* Construct a new instance
*
* @param term the term containing the descriptor and possibly the visualization mode
* @param parent the figure in which this figure is placed
* @throws TermVisualizationException if visualization of the term has failed, e.g., if the query
* failed.
* @throws TermInstantiationException if a visualization object could not be instantiated
*/
public VisualTerm(Compound term, TermContext parent)
throws TermVisualizationException, TermInstantiationException {
context = parent;
// Register this object with the content
context.registerTermFigure(path, this);
try {
// The first argument is the descriptor, containing the path and additional information
descriptor = (Compound) term.arg(1);
if (!descriptor.name().equals("::"))
System.err.println("Bad descriptor: " + descriptor.name());
path = ((Compound) descriptor.arg(1)).arg(1);
if (term.arity() > 1) {
projType = (Compound) term.arg(2);
} else {
projType = Compound.createCompound("cpi#default");
}
// Set up the GUI
setLayoutManager(new FlowLayout());
setRequestFocusEnabled(true);
// Create the child figures
contentFigure = createContentFigure(descriptor);
add(contentFigure);
unreg =
Notifier.instance()
.register(
new Compound("::", path, Compound.createCompound("cpi#path")),
new Runnable() {
@Override
public void run() {
try {
updateFigure();
} catch (TermVisualizationException e) {
e.printStackTrace();
} catch (TermInstantiationException e) {
e.printStackTrace();
}
}
});
} catch (TermVisualizationException e) {
e.printStackTrace();
Label label = new Label("<<<" + e.getMessage() + ">>>");
label.setForegroundColor(new Color(context.getTextEditor().getDisplay(), 255, 0, 0));
add(label);
} catch (ClassCastException e) {
e.printStackTrace();
Label label = new Label("<<<" + e.getMessage() + ">>>");
label.setForegroundColor(new Color(context.getTextEditor().getDisplay(), 128, 128, 0));
add(label);
}
pathOwner.put(path, this);
}
private void replaceContent() {
try {
setContentFromString(context.getTextEditor().getText());
} catch (TermVisualizationException e) {
ErrorDialog.openError(
context.getTextEditor().getShell(),
"Error Updating Element",
"The following error has occured: " + e.getMessage(),
Status.OK_STATUS);
} catch (PrologException e) {
e.printStackTrace();
} catch (TermInstantiationException e) {
e.printStackTrace();
} catch (ExecutionContextException e) {
e.printStackTrace();
}
}
public void focusGained(org.eclipse.swt.events.FocusEvent event) {
VisualTerm previousFocused = context.getFocused();
if (previousFocused != null) previousFocused.lostFocus();
context.setFocused(this);
LineBorder focusBorder = new LineBorder();
focusBorder.setStyle(Graphics.LINE_DASH);
focusBorder.setColor(getColor());
focusBorder.setWidth(1);
setBorder(focusBorder);
context.selectionChanged(this);
if (canModify()) {
try {
String text = termToText();
context.getTextEditor().setText(text);
context.getTextEditor().setEnabled(true);
context.getTextEditor().setSelection(0, text.length());
context.getTextEditor().addKeyListener(this);
context.getTextEditor().setFocus();
Viewport viewport = ((FigureCanvas) getCanvas()).getViewport();
Point p = viewport.getViewLocation();
if (p.y > getLocation().y) {
viewport.setViewLocation(new Point(p.x, getLocation().y));
} else if (p.y + viewport.getSize().height < getLocation().y + getSize().height
&& viewport.getSize().height > getSize().height) {
viewport.setViewLocation(
new Point(p.x, getLocation().y + getSize().height - viewport.getSize().height));
}
if (p.x > getLocation().x) {
viewport.setViewLocation(new Point(getLocation().x, p.y));
} else if (p.x + viewport.getSize().width < getLocation().x + getSize().width
&& viewport.getSize().width > getSize().width) {
viewport.setViewLocation(
new Point(getLocation().x + getSize().width - viewport.getSize().width, p.y));
}
} catch (IOException e) {
e.printStackTrace();
} catch (PrologException e) {
e.printStackTrace();
} catch (TermInstantiationException e) {
e.printStackTrace();
} catch (ExecutionContextException e) {
e.printStackTrace();
}
}
}
public void mousePressed(MouseEvent me) {
if (me.button == 3) {
// Context menu
try {
createContextMenu(me);
} catch (TermInstantiationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} else {
// Gain focus
if (canFocus()) {
requestFocus();
context.getTextEditor().setEnabled(true);
context.getTextEditor().addFocusListener(this);
context.getTextEditor().setFocus();
} else {
context.handleClick(me);
}
}
}
public Text getTextEditor() {
return context.getTextEditor();
}
