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check that radio connection is non-null when painting radio traffic history

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This commit is contained in:
fros4943 2009-10-19 17:37:50 +00:00
parent 1c4b6afea3
commit d8f31b6630
1 changed files with 12 additions and 7 deletions
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19
tools/cooja/java/se/sics/cooja/plugins/skins/TrafficVisualizerSkin.java
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@ -26,7 +26,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: TrafficVisualizerSkin.java,v 1.1 2009/08/27 13:59:48 fros4943 Exp $
* $Id: TrafficVisualizerSkin.java,v 1.2 2009/10/19 17:37:50 fros4943 Exp $
*/
package se.sics.cooja.plugins.skins;
@ -119,11 +119,13 @@ public class TrafficVisualizerSkin implements VisualizerSkin {
if (showHistory) {
RadioConnection[] past = radioMedium.getLastTickConnections();
for (RadioConnection con: past) {
history.add(con);
}
while (history.size() > HISTORY_SIZE) {
history.removeFirst();
if (past != null) {
for (RadioConnection con: past) {
history.add(con);
}
while (history.size() > HISTORY_SIZE) {
history.removeFirst();
}
}
}
visualizer.repaint();
@ -240,7 +242,10 @@ public class TrafficVisualizerSkin implements VisualizerSkin {
if (conns != null) {
g.setColor(Color.BLACK);
for (RadioConnection conn : conns) {
Radio source = conn.getSource();
if (conn == null) {
continue;
}
Radio source = conn.getSource(); // XXX Must not be null!
Point sourcePoint = visualizer.transformPositionToPixel(source.getPosition());
for (Radio destRadio : conn.getDestinations()) {
if (destRadio == null) {