4 package net.sf.openrocket.file.rocksim.importt;
6 import net.sf.openrocket.aerodynamics.WarningSet;
7 import net.sf.openrocket.file.rocksim.RocksimCommonConstants;
8 import net.sf.openrocket.file.simplesax.ElementHandler;
9 import net.sf.openrocket.file.simplesax.PlainTextHandler;
10 import net.sf.openrocket.rocketcomponent.RocketComponent;
11 import net.sf.openrocket.rocketcomponent.Streamer;
12 import org.xml.sax.SAXException;
14 import java.util.HashMap;
17 * A SAX handler for Streamer components.
19 class StreamerHandler extends RecoveryDeviceHandler<Streamer> {
22 * The OpenRocket Streamer.
24 private final Streamer streamer;
29 * @param c the parent component
30 * @param warnings the warning set
32 * @throws IllegalArgumentException thrown if <code>c</code> is null
34 public StreamerHandler(RocketComponent c, WarningSet warnings) throws IllegalArgumentException {
36 throw new IllegalArgumentException("The parent of a streamer may not be null.");
38 streamer = new Streamer();
39 if (isCompatible(c, Streamer.class, warnings)) {
48 public ElementHandler openElement(String element, HashMap<String, String> attributes, WarningSet warnings) {
49 return PlainTextHandler.INSTANCE;
56 public void closeElement(String element, HashMap<String, String> attributes, String content, WarningSet warnings)
58 super.closeElement(element, attributes, content, warnings);
61 if (RocksimCommonConstants.WIDTH.equals(element)) {
62 streamer.setStripWidth(Math.max(0, Double.parseDouble(content) / RocksimCommonConstants.ROCKSIM_TO_OPENROCKET_LENGTH));
64 if (RocksimCommonConstants.LEN.equals(element)) {
65 streamer.setStripLength(Math.max(0, Double.parseDouble(content) / RocksimCommonConstants.ROCKSIM_TO_OPENROCKET_LENGTH));
67 if (RocksimCommonConstants.DRAG_COEFFICIENT.equals(element)) {
68 streamer.setCD(Double.parseDouble(content));
70 if (RocksimCommonConstants.MATERIAL.equals(element)) {
71 setMaterialName(content);
74 catch (NumberFormatException nfe) {
75 warnings.add("Could not convert " + element + " value of " + content + ". It is expected to be a number.");
83 public Streamer getComponent() {