/**
* Moves the layer to the given new position. No event is fired, but repaints according to the new
* Z-Order of the layers.
*
* @param layer The layer to move
* @param pos The new position of the layer
*/
public void moveLayer(Layer layer, int pos) {
layerLock.writeLock().lock();
layerLock.readLock().lock();
EnumSet<LayerListenerType> listenersToFire;
Layer oldActiveLayer = activeLayer;
OsmDataLayer oldEditLayer = editLayer;
try {
try {
int curLayerPos = layers.indexOf(layer);
if (curLayerPos == -1) throw new IllegalArgumentException(tr("Layer not in list."));
if (pos == curLayerPos) return; // already in place.
layers.remove(curLayerPos);
if (pos >= layers.size()) {
layers.add(layer);
} else {
layers.add(pos, layer);
}
listenersToFire = setEditLayer(layers);
} finally {
layerLock.writeLock().unlock();
}
onActiveEditLayerChanged(oldActiveLayer, oldEditLayer, listenersToFire);
AudioPlayer.reset();
} finally {
layerLock.readLock().unlock();
}
repaint();
}
/**
* 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();
}
}
/**
* Sets the active layer to <code>layer</code>. If <code>layer</code> is an instance of {@link
* OsmDataLayer} also sets {@link #editLayer} to <code>layer</code>.
*
* @param layer the layer to be activate; must be one of the layers in the list of layers
* @throws IllegalArgumentException if layer is not in the lis of layers
*/
public void setActiveLayer(Layer layer) {
layerLock.writeLock().lock();
layerLock.readLock().lock();
EnumSet<LayerListenerType> listenersToFire;
Layer oldActiveLayer = activeLayer;
OsmDataLayer oldEditLayer = editLayer;
try {
try {
listenersToFire = setActiveLayer(layer, true);
} finally {
layerLock.writeLock().unlock();
}
onActiveEditLayerChanged(oldActiveLayer, oldEditLayer, listenersToFire);
} finally {
layerLock.readLock().unlock();
}
repaint();
}
/**
* Remove the layer from the mapview. If the layer was in the list before, an LayerChange event is
* fired.
*
* @param layer The layer to remove
*/
public void removeLayer(Layer layer) {
layerLock.writeLock().lock();
layerLock.readLock().lock();
EnumSet<LayerListenerType> listenersToFire = EnumSet.noneOf(LayerListenerType.class);
Layer oldActiveLayer = activeLayer;
OsmDataLayer oldEditLayer = editLayer;
try {
try {
List<Layer> layersList = new ArrayList<>(layers);
if (!layersList.remove(layer)) return;
listenersToFire = setEditLayer(layersList);
if (layer == activeLayer) {
listenersToFire.addAll(setActiveLayer(determineNextActiveLayer(layersList), false));
}
if (layer instanceof OsmDataLayer) {
((OsmDataLayer) layer).removeLayerPropertyChangeListener(this);
}
layers.remove(layer);
Main.removeProjectionChangeListener(layer);
} finally {
layerLock.writeLock().unlock();
}
onActiveEditLayerChanged(oldActiveLayer, oldEditLayer, listenersToFire);
fireLayerRemoved(layer);
layer.removePropertyChangeListener(this);
layer.destroy();
AudioPlayer.reset();
} finally {
layerLock.readLock().unlock();
}
repaint();
}
