/**
* Loads the drawing. By convention this method is invoked on a worker thread.
*
* @param progress A ProgressIndicator to inform the user about the progress of the operation.
* @return The Drawing that was loaded.
*/
protected Drawing loadDrawing(ProgressIndicator progress) throws IOException {
Drawing drawing = createDrawing();
if (getParameter("datafile") != null) {
URL url = new URL(getDocumentBase(), getParameter("datafile"));
URLConnection uc = url.openConnection();
// Disable caching. This ensures that we always request the
// newest version of the drawing from the server.
// (Note: The server still needs to set the proper HTTP caching
// properties to prevent proxies from caching the drawing).
if (uc instanceof HttpURLConnection) {
((HttpURLConnection) uc).setUseCaches(false);
}
// Read the data into a buffer
int contentLength = uc.getContentLength();
InputStream in = uc.getInputStream();
try {
if (contentLength != -1) {
in = new BoundedRangeInputStream(in);
((BoundedRangeInputStream) in).setMaximum(contentLength + 1);
progress.setProgressModel((BoundedRangeModel) in);
progress.setIndeterminate(false);
}
BufferedInputStream bin = new BufferedInputStream(in);
bin.mark(512);
// Read the data using all supported input formats
// until we succeed
IOException formatException = null;
for (InputFormat format : drawing.getInputFormats()) {
try {
bin.reset();
} catch (IOException e) {
uc = url.openConnection();
in = uc.getInputStream();
in = new BoundedRangeInputStream(in);
((BoundedRangeInputStream) in).setMaximum(contentLength + 1);
progress.setProgressModel((BoundedRangeModel) in);
bin = new BufferedInputStream(in);
bin.mark(512);
}
try {
bin.reset();
format.read(bin, drawing, true);
formatException = null;
break;
} catch (IOException e) {
formatException = e;
}
}
if (formatException != null) {
throw formatException;
}
} finally {
in.close();
}
}
return drawing;
}
@Override
public void mouseMoved(MouseEvent evt) {
Point point = evt.getPoint();
updateCursor(editor.findView((Container) evt.getSource()), point);
DrawingView view = editor.findView((Container) evt.getSource());
updateCursor(view, point);
if (view == null || editor.getActiveView() != view) {
clearHoverHandles();
} else {
// Search first, if one of the selected figures contains
// the current mouse location. Only then search for other
// figures. This search sequence is consistent with the
// search sequence of the SelectionTool.
Figure figure = null;
Point2D.Double p = view.viewToDrawing(point);
for (Figure f : view.getSelectedFigures()) {
if (f.contains(p)) {
figure = f;
}
}
if (figure == null) {
figure = view.findFigure(point);
Drawing drawing = view.getDrawing();
while (figure != null && !figure.isSelectable()) {
figure = drawing.findFigureBehind(p, figure);
}
}
updateHoverHandles(view, figure);
}
}
/** Reads the view from the specified uri. */
@Override
public void read(URI f, URIChooser chooser) throws IOException {
try {
final Drawing drawing = createDrawing();
InputFormat inputFormat = drawing.getInputFormats().get(0);
inputFormat.read(f, drawing, true);
SwingUtilities.invokeAndWait(
new Runnable() {
@Override
public void run() {
view.getDrawing().removeUndoableEditListener(undo);
view.setDrawing(drawing);
view.getDrawing().addUndoableEditListener(undo);
undo.discardAllEdits();
}
});
} catch (InterruptedException e) {
InternalError error = new InternalError();
e.initCause(e);
throw error;
} catch (InvocationTargetException e) {
InternalError error = new InternalError();
e.initCause(e);
throw error;
}
}
public void setData(String text) {
if (text != null && text.length() > 0) {
InputStream in = null;
try {
Object result = null;
Drawing drawing = createDrawing();
// Try to read the data using all known input formats.
for (InputFormat fmt : drawing.getInputFormats()) {
try {
fmt.read(in, drawing);
in = new ByteArrayInputStream(text.getBytes("UTF8"));
result = drawing;
break;
} catch (IOException e) {
result = e;
}
}
if (result instanceof IOException) {
throw (IOException) result;
}
setDrawing(drawing);
} catch (Throwable e) {
getDrawing().removeAllChildren();
SVGTextFigure tf = new SVGTextFigure();
tf.setText(e.getMessage());
tf.setBounds(new Point2D.Double(10, 10), new Point2D.Double(100, 100));
getDrawing().add(tf);
e.printStackTrace();
} finally {
if (in != null) {
try {
in.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
}
}
/**
* Writes the drawing to the specified output stream.
* This method applies the specified drawingTransform to the drawing, and draws
* it on an image of the specified getChildCount.
*/
public void write(OutputStream out, Drawing drawing,
AffineTransform drawingTransform, Dimension imageSize) throws IOException {
write(out, drawing.getChildren(), drawingTransform, imageSize);
}
public void write(OutputStream out, Drawing drawing) throws IOException {
write(out, drawing.getChildren());
}
public void setDrawing(Drawing d) {
undoManager.discardAllEdits();
view.getDrawing().removeUndoableEditListener(undoManager);
view.setDrawing(d);
d.addUndoableEditListener(undoManager);
}
/** Writes the view to the specified uri. */
@Override
public void write(URI f, URIChooser chooser) throws IOException {
Drawing drawing = view.getDrawing();
OutputFormat outputFormat = drawing.getOutputFormats().get(0);
outputFormat.write(f, drawing);
}
