Package org.openstreetmap.josm.actions.downloadtasks

Class DownloadSessionTask

    • Method Detail

      • download

        public java.util.concurrent.Future<?> download​(DownloadParams settings,
                                               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();
       }
    }
    MainApplication.worker.submit(runAfterTask);
        Parameters:
        settings - download settings
        downloadArea - the area to download
        progressMonitor - the progressMonitor
        Returns:
        the future representing the asynchronous task

      • cancel

        public void cancel()
        Description copied from interface: DownloadTask
        Cancels the asynchronous download task.

      • getConfirmationMessage

        public java.lang.String getConfirmationMessage​(java.net.URL url)
        Description copied from interface: DownloadTask
        Replies the HTML-formatted confirmation message to be shown to user when the given URL needs to be confirmed before loading.
        Parameters:
        url - The URL to be confirmed
        Returns:
        The HTML-formatted confirmation message to be shown to user