--- /dev/null
+/*
+ * StreamerHandler.java
+ */
+package net.sf.openrocket.file.rocksim;
+
+import net.sf.openrocket.aerodynamics.WarningSet;
+import net.sf.openrocket.file.simplesax.ElementHandler;
+import net.sf.openrocket.file.simplesax.PlainTextHandler;
+import net.sf.openrocket.rocketcomponent.RocketComponent;
+import net.sf.openrocket.rocketcomponent.Streamer;
+import org.xml.sax.SAXException;
+
+import java.util.HashMap;
+
+/**
+ * A SAX handler for Streamer components.
+ */
+class StreamerHandler extends RecoveryDeviceHandler<Streamer> {
+
+ /**
+ * The OpenRocket Streamer.
+ */
+ private final Streamer streamer;
+
+ /**
+ * Constructor.
+ *
+ * @param c the parent component
+ * @throws IllegalArgumentException thrown if <code>c</code> is null
+ */
+ public StreamerHandler(RocketComponent c) throws IllegalArgumentException {
+ if (c == null) {
+ throw new IllegalArgumentException("The parent of a streamer may not be null.");
+ }
+ streamer = new Streamer();
+ c.addChild(streamer);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public ElementHandler openElement(String element, HashMap<String, String> attributes, WarningSet warnings) {
+ return PlainTextHandler.INSTANCE;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public void closeElement(String element, HashMap<String, String> attributes, String content, WarningSet warnings)
+ throws SAXException {
+ super.closeElement(element, attributes, content, warnings);
+
+ try {
+ if ("Width".equals(element)) {
+ streamer.setStripWidth(Math.max(0, Double.parseDouble(content) / RocksimHandler.ROCKSIM_TO_OPENROCKET_LENGTH));
+ }
+ if ("Len".equals(element)) {
+ streamer.setStripLength(Math.max(0, Double.parseDouble(content) / RocksimHandler.ROCKSIM_TO_OPENROCKET_LENGTH));
+ }
+ if ("DragCoefficient".equals(element)) {
+ streamer.setCD(Double.parseDouble(content));
+ }
+ if ("Material".equals(element)) {
+ setMaterialName(content);
+ }
+ }
+ catch (NumberFormatException nfe) {
+ warnings.add("Could not convert " + element + " value of " + content + ". It is expected to be a number.");
+ }
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public Streamer getComponent() {
+ return streamer;
+ }
+
+}
+