org.openstreetmap.josm.actions.downloadtasks
Class DownloadOsmChangeTask
java.lang.Object
org.openstreetmap.josm.actions.downloadtasks.AbstractDownloadTask
org.openstreetmap.josm.actions.downloadtasks.DownloadOsmTask
org.openstreetmap.josm.actions.downloadtasks.DownloadOsmChangeTask
- All Implemented Interfaces:
- DownloadTask
- Direct Known Subclasses:
- DownloadOsmChangeCompressedTask
public class DownloadOsmChangeTask
- extends DownloadOsmTask
Method Summary |
boolean |
acceptsUrl(java.lang.String url)
Returns true if the task is able to open the given URL, false otherwise. |
java.util.concurrent.Future<?> |
download(boolean newLayer,
Bounds downloadArea,
ProgressMonitor progressMonitor)
Asynchronously launches the download task for a given bounding box. |
java.util.concurrent.Future<?> |
loadUrl(boolean new_layer,
java.lang.String url,
ProgressMonitor progressMonitor)
Loads a given URL from the OSM Server |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
DownloadOsmChangeTask
public DownloadOsmChangeTask()
acceptsUrl
public boolean acceptsUrl(java.lang.String url)
- Description copied from interface:
DownloadTask
- Returns true if the task is able to open the given URL, false otherwise.
- Specified by:
acceptsUrl
in interface DownloadTask
- Overrides:
acceptsUrl
in class DownloadOsmTask
- Parameters:
url
- the url to download from
- Returns:
- True if the task is able to open the given URL, false otherwise.
download
public java.util.concurrent.Future<?> download(boolean newLayer,
Bounds downloadArea,
ProgressMonitor progressMonitor)
- Description copied from interface:
DownloadTask
- Asynchronously launches the download task for a given bounding box.
Set
progressMonitor
to null, if the task should create, open, and close a progress monitor.
Set progressMonitor to NullProgressMonitor.INSTANCE
if progress information is to
be discarded.
You can wait for the asynchronous download task to finish by synchronizing on the returned
Future
, but make sure not to freeze up JOSM. Example:
Future> future = task.download(...);
// DON'T run this on the Swing EDT or JOSM will freeze
future.get(); // waits for the dowload task to complete
The following example uses a pattern which is better suited if a task is launched from
the Swing EDT:
final Future> future = task.download(...);
Runnable runAfterTask = new Runnable() {
public void run() {
// this is not strictly necessary because of the type of executor service
// Main.worker is initialized with, but it doesn't harm either
//
future.get(); // wait for the download task to complete
doSomethingAfterTheTaskCompleted();
}
}
Main.worker.submit(runAfterTask);
- Specified by:
download
in interface DownloadTask
- Overrides:
download
in class DownloadOsmTask
- Parameters:
newLayer
- true, if the data is to be downloaded into a new layer. If false, the task
selects one of the existing layers as download layer, preferably the active layer.downloadArea
- the area to downloadprogressMonitor
- the progressMonitor
- Returns:
- the future representing the asynchronous task
loadUrl
public java.util.concurrent.Future<?> loadUrl(boolean new_layer,
java.lang.String url,
ProgressMonitor progressMonitor)
- Description copied from class:
DownloadOsmTask
- Loads a given URL from the OSM Server
- Specified by:
loadUrl
in interface DownloadTask
- Overrides:
loadUrl
in class DownloadOsmTask
- Parameters:
new_layer
- True if the data should be saved to a new layerurl
- The URL as StringprogressMonitor
- the progressMonitor
- Returns:
- the future representing the asynchronous task
- See Also:
DownloadTask.download(boolean, Bounds, ProgressMonitor)
JOSM