weka.gui

Interface Perspective

All Known Implementing Classes:

AbstractPerspective, AssociationsPanel, AttributeSelectionPanel, AttributeSummaryPerspective, ClassifierPanel, ClustererPanel, Experimenter, MainKFPerspective, PreprocessPanel, ScatterPlotMatrixPerspective, SimpleCLIPanel, SQLViewerPerspective, VisualizePanel

public interface Perspective

Interface for GUI elements that can appear as a perspective in a GUIApplication. Clients will typically extend AbstractPerspective.

Version:

$Revision: $

Author:

Mark Hall (mhall{[at]}pentaho{[dot]}com)

Method Summary

Modifier and Type	Method and Description
boolean	acceptsInstances() Returns true if this perspective can do something meaningful with a set of instances
Defaults	getDefaultSettings() Get the default settings for this perspective (or null if there are none)
GUIApplication	getMainApplication() Get the main application that this perspective belongs to
List<JMenu>	getMenus() Get an ordered list of menus to appear in the main menu bar.
Icon	getPerspectiveIcon() Get the icon for this perspective
String	getPerspectiveID() Get the ID of this perspective
String	getPerspectiveTipText() Get the tool tip text for this perspective
String	getPerspectiveTitle() Get the title of this perspective
void	instantiationComplete() Gets called when startup of the application has completed.
boolean	okToBeActive() Returns true if this perspective is OK with being an active perspective - i.e.
boolean	requiresLog() Whether this perspective requires a graphical log to write to
void	setActive(boolean active) Set active status of this perspective.
void	setInstances(Instances instances) Set instances (if this perspective can use them)
void	setLoaded(boolean loaded) Set whether this perspective is "loaded" - i.e.
void	setLog(Logger log) Set a log to use (if required by the perspective)
void	setMainApplication(GUIApplication main) Set the main application.
void	settingsChanged() Called when the user alters settings.

Method Detail

instantiationComplete

void instantiationComplete()

Gets called when startup of the application has completed. At this point, and only at this point, is it guaranteed that a perspective has access to its hosting application and the PerspectiveManager. Implementations can use this method to complete their initialization in this method if this requires access to information from the main application and/or the PerspectiveManager (i.e. knowledge about what other perspectives are available).

okToBeActive

boolean okToBeActive()

Returns true if this perspective is OK with being an active perspective - i.e. the user can click on this perspective at this time in the perspective toolbar. For example, a Perspective might return false from this method if it needs a set of instances to operate but none have been supplied yet.

Returns:

true if this perspective can be active at the current time

setActive

void setActive(boolean active)

Set active status of this perspective. True indicates that this perspective is the visible active perspective in the application

Parameters:

active - true if this perspective is the active one

setLoaded

void setLoaded(boolean loaded)

Set whether this perspective is "loaded" - i.e. whether or not the user has opted to have it available in the perspective toolbar. The perspective can make the decision as to allocating or freeing resources on the basis of this. Note that the main application and perspective manager instances are not available to the perspective until the instantiationComplete() method has been called.

Parameters:

loaded - true if the perspective is available in the perspective toolbar of the KnowledgeFlow

setMainApplication

void setMainApplication(GUIApplication main)

Set the main application. Gives other perspectives access to information provided by the main application

Parameters:

main - the main application

getMainApplication

GUIApplication getMainApplication()

Get the main application that this perspective belongs to

Returns:

the main application that this perspective belongs to

getPerspectiveID

String getPerspectiveID()

Get the ID of this perspective

Returns:

the ID of this perspective

getPerspectiveTitle

String getPerspectiveTitle()

Get the title of this perspective

Returns:

the title of this perspective

getPerspectiveIcon

Icon getPerspectiveIcon()

Get the icon for this perspective

Returns:

the icon for this perspective

getPerspectiveTipText

String getPerspectiveTipText()

Get the tool tip text for this perspective

Returns:

the tool tip text for this perspective

getMenus

List<JMenu> getMenus()

Get an ordered list of menus to appear in the main menu bar. Return null for no menus

Returns:

a list of menus to appear in the main menu bar or null for no menus

getDefaultSettings

Defaults getDefaultSettings()

Get the default settings for this perspective (or null if there are none)

Returns:

the default settings for this perspective, or null if the perspective does not have any settings

settingsChanged

void settingsChanged()

Called when the user alters settings. The settings altered by the user are not necessarily ones related to this perspective

acceptsInstances

boolean acceptsInstances()

Returns true if this perspective can do something meaningful with a set of instances

Returns:

true if this perspective accepts instances

setInstances

void setInstances(Instances instances)

Set instances (if this perspective can use them)

Parameters:

instances - the instances

requiresLog

boolean requiresLog()

Whether this perspective requires a graphical log to write to

Returns:

true if a log is needed by this perspective

setLog

void setLog(Logger log)

Set a log to use (if required by the perspective)

Parameters:

log - the graphical log to use