Package adams.gui.flow

Class FlowWorker

java.lang.Object

adams.gui.flow.FlowWorker

All Implemented Interfaces:

Pausable, StatusMessageHandler, Stoppable, Runnable

public class FlowWorker
extends Object
implements Runnable, Pausable, Stoppable, StatusMessageHandler

Specialized worker class for executing a flow.

Author:

fracpete (fracpete at waikato dot ac dot nz)

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	m_Debug	whether to run in debug mode.
protected File	m_File	the current flow file.
protected Actor	m_Flow	the flow to execute.
protected String	m_Output	generated output.
protected FlowWorkerHandler	m_Owner	the panel this flow belongs to.
protected boolean	m_Running	whether the flow is still being executed.
protected boolean	m_ShowNotification	whether to show a notification.
protected long	m_StartTime	the start time.
protected boolean	m_Stopping	whether the flow is being stopped.

Constructor Summary

Constructors

Constructor	Description
FlowWorker(FlowWorkerHandler owner, Actor flow, File file, boolean showNotification, boolean debug)	Initializes the worker.

Method Summary

Modifier and Type	Method	Description
protected Object	doInBackground()	Executes the flow.
protected void	done()	Executed on the Event Dispatch Thread after the doInBackground method is finished.
Actor	getFlow()	Returns the flow.
boolean	isPaused()	Returns whether the object is currently paused.
boolean	isRunning()	Returns whether a flow is currently running.
boolean	isStopping()	Returns whether a flow is currently being stopped.
void	pauseExecution()	Pauses the execution.
void	resumeExecution()	Resumes the execution.
void	run()	Execute the flow.
void	showNotification(String msg, FlowPanelNotificationArea.NotificationType type)	Displays the given message in a separate dialog.
void	showStatus(String msg)	Displays a message.
void	stopExecution()	Stops the execution.
protected void	updateTabIcon(String icon)	Updates the tab icon, if possible.

Methods inherited from class java.lang.Object

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

Field Detail

m_Owner

protected FlowWorkerHandler m_Owner

the panel this flow belongs to.

m_Flow

protected Actor m_Flow

the flow to execute.

m_File

protected File m_File

the current flow file.

m_Output

protected String m_Output

generated output.

m_ShowNotification

protected boolean m_ShowNotification

whether to show a notification.

m_Debug

protected boolean m_Debug

whether to run in debug mode.

m_Running

protected boolean m_Running

whether the flow is still being executed.

m_Stopping

protected boolean m_Stopping

whether the flow is being stopped.

m_StartTime

protected long m_StartTime

the start time.

Constructor Detail

FlowWorker

public FlowWorker(FlowWorkerHandler owner,
                  Actor flow,
                  File file,
                  boolean showNotification,
                  boolean debug)

Initializes the worker.

Method Detail

doInBackground

protected Object doInBackground()
                         throws Exception

Executes the flow.

Returns:

always null

Throws:

Exception - if unable to compute a result

done

protected void done()

Executed on the Event Dispatch Thread after the doInBackground method is finished.

run

public void run()

Execute the flow.

Specified by:

run in interface Runnable

pauseExecution

public void pauseExecution()

Pauses the execution.

Specified by:

pauseExecution in interface Pausable

isPaused

public boolean isPaused()

Returns whether the object is currently paused.

Specified by:

isPaused in interface Pausable

Returns:

true if object is paused

resumeExecution

public void resumeExecution()

Resumes the execution.

Specified by:

resumeExecution in interface Pausable

stopExecution

public void stopExecution()

Stops the execution.

Specified by:

stopExecution in interface Stoppable

isRunning

public boolean isRunning()

Returns whether a flow is currently running.

Returns:

true if a flow is being executed

isStopping

public boolean isStopping()

Returns whether a flow is currently being stopped.

Returns:

true if a flow is currently being stopped

showStatus

public void showStatus(String msg)

Displays a message.

Specified by:

showStatus in interface StatusMessageHandler

Parameters:

msg - the message to display

showNotification

public void showNotification(String msg,
                             FlowPanelNotificationArea.NotificationType type)

Displays the given message in a separate dialog.

Parameters:

msg - the message to display

type - the type of notification (info/warning/error)

getFlow

public Actor getFlow()

Returns the flow.

Returns:

the flow

updateTabIcon

protected void updateTabIcon(String icon)

Updates the tab icon, if possible.

Parameters:

icon - the icon name, can be null