/**
* for AlgebraView changes in the tree selection and redefine dialog
*
* @return changed geo
*/
public GeoElement changeGeoElementNoExceptionHandling(
GeoElement geo, ValidExpression newValue, boolean redefineIndependent, boolean storeUndoInfo)
throws Exception {
String oldLabel, newLabel;
GeoElement[] result;
try {
oldLabel = geo.getLabel();
newLabel = newValue.getLabel();
if (newLabel == null) {
newLabel = oldLabel;
newValue.setLabel(newLabel);
}
// make sure that points stay points and vectors stay vectors
if (newValue instanceof ExpressionNode) {
ExpressionNode n = (ExpressionNode) newValue;
if (geo.isGeoPoint()) n.setForcePoint();
else if (geo.isGeoVector()) n.setForceVector();
else if (geo.isGeoFunction()) n.setForceFunction();
}
if (newLabel.equals(oldLabel)) {
// try to overwrite
result = processValidExpression(newValue, redefineIndependent);
if (result != null && storeUndoInfo) app.storeUndoInfo();
return result[0];
} else if (cons.isFreeLabel(newLabel)) {
newValue.setLabel(oldLabel);
// rename to oldLabel to enable overwriting
result = processValidExpression(newValue, redefineIndependent);
result[0].setLabel(newLabel); // now we rename
if (storeUndoInfo) app.storeUndoInfo();
return result[0];
} else {
String str[] = {"NameUsed", newLabel};
throw new MyError(app, str);
}
} catch (CircularDefinitionException e) {
Application.debug("CircularDefinition");
throw e;
} catch (Exception e) {
e.printStackTrace();
throw new Exception(app.getError("InvalidInput") + ":\n" + newValue);
} catch (MyError e) {
e.printStackTrace();
throw new Exception(e.getLocalizedMessage());
} catch (Error e) {
e.printStackTrace();
throw new Exception(app.getError("InvalidInput") + ":\n" + newValue);
}
}
