/**
* Add a layer to the current MapView. The layer will be added at topmost position.
*
* @param layer The layer to add
*/
public void addLayer(Layer layer) {
boolean isOsmDataLayer = layer instanceof OsmDataLayer;
layerLock.writeLock().lock();
layerLock.readLock().lock();
EnumSet<LayerListenerType> listenersToFire = EnumSet.noneOf(LayerListenerType.class);
Layer oldActiveLayer = activeLayer;
OsmDataLayer oldEditLayer = editLayer;
try {
try {
if (layer instanceof MarkerLayer && playHeadMarker == null) {
playHeadMarker = PlayHeadMarker.create();
}
if (layer instanceof GpxLayer) {
addGpxLayer((GpxLayer) layer);
} else if (layers.isEmpty()) {
layers.add(layer);
} else if (layer.isBackgroundLayer()) {
int i = 0;
for (; i < layers.size(); i++) {
if (layers.get(i).isBackgroundLayer()) {
break;
}
}
layers.add(i, layer);
} else {
layers.add(0, layer);
}
if (isOsmDataLayer || oldActiveLayer == null) {
// autoselect the new layer
listenersToFire.addAll(setActiveLayer(layer, true));
}
} finally {
layerLock.writeLock().unlock();
}
fireLayerAdded(layer);
if (isOsmDataLayer) {
((OsmDataLayer) layer).addLayerStateChangeListener(this);
}
onActiveEditLayerChanged(oldActiveLayer, oldEditLayer, listenersToFire);
layer.addPropertyChangeListener(this);
Main.addProjectionChangeListener(layer);
AudioPlayer.reset();
} finally {
layerLock.readLock().unlock();
}
if (!listenersToFire.isEmpty()) {
repaint();
}
}
