de.cismet.tools.gui.downloadmanager

Class DownloadManager

java.lang.Object

de.cismet.tools.gui.downloadmanager.DownloadManager

All Implemented Interfaces:

de.cismet.tools.configuration.Configurable, Observer

public class DownloadManager
extends Object
implements Observer, de.cismet.tools.configuration.Configurable

The download manager manages all current downloads. New downloads are added to a collection, completed downloads are removed. Erroneous downloads remain in the collection. The download manager observes all download objects for state changed and informs the download manager panel via the DownloadListChangedListener interface.

Version:

$Revision$, $Date$

Author:

jweintraut

Method Summary

Modifier and Type	Method and Description
void	add(Download download) This method is used to add a download to the download list.
void	addDownloadListChangedListener(DownloadListChangedListener listener) Adds a new DownloadListChangedListener.
void	addDownloadsSubsequently(BackgroundTaskMultipleDownload backgroundTaskMultipleDownload) Checks if the encapsulated downloads of a BackgroundTaskMultipleDownload have already been added to the DownloadManager.
void	configure(org.jdom.Element parent)
org.jdom.Element	getConfiguration()
int	getCountDownloadsCancelled() DOCUMENT ME!
int	getCountDownloadsCompleted() Returns the count of completed downloads.
int	getCountDownloadsErroneous() Returns the count of erroneous downloads.
int	getCountDownloadsTotal() Returns the total count of downloads.
File	getDestinationDirectory() Returns the destination directory.
Collection<Download>	getDownloads() Returns the current download list.
int	getNotificationDisplayTime() DOCUMENT ME!
int	getParallelDownloads() DOCUMENT ME!
static DownloadManager	instance() It's a Singleton.
boolean	isEnabled() Deprecated. DOCUMENT ME!
void	masterConfigure(org.jdom.Element parent)
protected void	notifyDownloadListChanged(DownloadListChangedEvent event) Notifies all current DownloadListChangedListeners.
void	removeDownload(Download download) Remove a specified download from the download list.
void	removeDownloadListChangedListener(DownloadListChangedListener listener) Removes a DownloadListChangedListener.
void	removeObsoleteDownloads() Removes obsolete downloads.
void	setDestinationDirectory(File destinationDirectory) Sets the destination directory for downloads.
void	setNotificationDisplayTime(int notificationDisplayTime) DOCUMENT ME!
void	setParallelDownloads(int parallelDownloads) DOCUMENT ME!
void	update(Observable o, Object arg)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface de.cismet.tools.configuration.Configurable

configure, masterConfigure

Method Detail

instance

public static DownloadManager instance()

It's a Singleton. There can only be one download manager.

Returns:

The download manager.

add

public void add(Download download)

This method is used to add a download to the download list.

Parameters:

download - A new download to add.

addDownloadsSubsequently

public void addDownloadsSubsequently(BackgroundTaskMultipleDownload backgroundTaskMultipleDownload)

Checks if the encapsulated downloads of a BackgroundTaskMultipleDownload have already been added to the DownloadManager. If a single download has not yet been added it is added and the observers will be notified.

Parameters:

backgroundTaskMultipleDownload - DOCUMENT ME!

removeObsoleteDownloads

public void removeObsoleteDownloads()

Removes obsolete downloads. Only completed downloads are obsolete.

removeDownload

public void removeDownload(Download download)

Remove a specified download from the download list.

Parameters:

download - The download to remove.

getDownloads

public Collection<Download> getDownloads()

Returns the current download list.

Returns:

The current download list.

getCountDownloadsErroneous

public int getCountDownloadsErroneous()

Returns the count of erroneous downloads.

Returns:

The count of erroneous downloads.

getCountDownloadsCompleted

public int getCountDownloadsCompleted()

Returns the count of completed downloads.

Returns:

The count of completed downloads.

getCountDownloadsTotal

public int getCountDownloadsTotal()

Returns the total count of downloads.

Returns:

The total count of downloads.

getCountDownloadsCancelled

public int getCountDownloadsCancelled()

DOCUMENT ME!

Returns:

DOCUMENT ME!

getParallelDownloads

public int getParallelDownloads()

DOCUMENT ME!

Returns:

DOCUMENT ME!

setParallelDownloads

public void setParallelDownloads(int parallelDownloads)

DOCUMENT ME!

Parameters:

parallelDownloads - DOCUMENT ME!

getNotificationDisplayTime

public int getNotificationDisplayTime()

DOCUMENT ME!

Returns:

DOCUMENT ME!

setNotificationDisplayTime

public void setNotificationDisplayTime(int notificationDisplayTime)

DOCUMENT ME!

Parameters:

notificationDisplayTime - DOCUMENT ME!

getDestinationDirectory

public File getDestinationDirectory()

Returns the destination directory.

Returns:

The destination directory for downloads.

setDestinationDirectory

public void setDestinationDirectory(File destinationDirectory)

Sets the destination directory for downloads. Setting this does only affect new downloads. If the given download location is invalid, the DownloadManager will be disabled.

Parameters:

destinationDirectory - The new destination directory for downloads.

isEnabled

public boolean isEnabled()

Deprecated. DOCUMENT ME!

Returns a flag which tells whether download manager is enabled or not.

Returns:

The flag whether the download manager is enabled or not.

update

public void update(Observable o,
                   Object arg)

Specified by:

update in interface Observer

addDownloadListChangedListener

public void addDownloadListChangedListener(DownloadListChangedListener listener)

Adds a new DownloadListChangedListener.

Parameters:

listener - The listener to add.

removeDownloadListChangedListener

public void removeDownloadListChangedListener(DownloadListChangedListener listener)

Removes a DownloadListChangedListener.

Parameters:

listener - The listener to remove.

notifyDownloadListChanged

protected void notifyDownloadListChanged(DownloadListChangedEvent event)

Notifies all current DownloadListChangedListeners.

Parameters:

event - The event to notify about.

configure

public void configure(org.jdom.Element parent)

Specified by:

configure in interface de.cismet.tools.configuration.Configurable

masterConfigure

public void masterConfigure(org.jdom.Element parent)

Specified by:

masterConfigure in interface de.cismet.tools.configuration.Configurable

getConfiguration

public org.jdom.Element getConfiguration()
                                  throws de.cismet.tools.configuration.NoWriteError

Specified by:

getConfiguration in interface de.cismet.tools.configuration.Configurable

Throws:

de.cismet.tools.configuration.NoWriteError