org.esa.beam.framework.ui.layer
Class CollectionLayerSource

java.lang.Object
  org.esa.beam.framework.ui.layer.CollectionLayerSource

All Implemented Interfaces:

LayerSource

public class CollectionLayerSource
extends Object
implements LayerSource

This layer source creates a new and empty collection layer.

Note: This API is not public yet and may significantly change in the future. Use it at your own risk.

Since:

BEAM 4.6

Version:

$Revision$ $Date$

Author:

Marco Zuehlke

Constructor Summary

CollectionLayerSource()

Method Summary

void	cancel(LayerSourcePageContext pageContext) Aborts the operation of this layer source.
boolean	canFinish(LayerSourcePageContext pageContext) Checks whether this layer source can perform its finishing method without further information.
AbstractLayerSourceAssistantPage	getFirstPage(LayerSourcePageContext pageContext) Returns the first page (of possible many) of the assistant that belongs to this layer source.
boolean	hasFirstPage()
boolean	isApplicable(LayerSourcePageContext pageContext) Check if this layer source is applicable to the current context.
boolean	performFinish(LayerSourcePageContext pageContext) Adds one or more layers to the given context

Methods inherited from class java.lang.Object

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

Constructor Detail

CollectionLayerSource

public CollectionLayerSource()

Method Detail

isApplicable

public boolean isApplicable(LayerSourcePageContext pageContext)

Description copied from interface: LayerSource

Check if this layer source is applicable to the current context.

Specified by:

isApplicable in interface LayerSource

Parameters:

pageContext - The current context.

Returns:

true, if this layer source is applicable.

hasFirstPage

public boolean hasFirstPage()

Specified by:

hasFirstPage in interface LayerSource

Returns:

true, if this layer source has assistant pages.

getFirstPage

public AbstractLayerSourceAssistantPage getFirstPage(LayerSourcePageContext pageContext)

Description copied from interface: LayerSource

Returns the first page (of possible many) of the assistant that belongs to this layer source. The given context can be interrogated to decide which page to return.

Specified by:

getFirstPage in interface LayerSource

Parameters:

pageContext - The current context.

Returns:

the first assistant page.

canFinish

public boolean canFinish(LayerSourcePageContext pageContext)

Description copied from interface: LayerSource

Checks whether this layer source can perform its finishing method without further information.

Specified by:

canFinish in interface LayerSource

Parameters:

pageContext - The current context.

Returns:

true, if finish can be called.

performFinish

public boolean performFinish(LayerSourcePageContext pageContext)

Description copied from interface: LayerSource

Adds one or more layers to the given context

Specified by:

performFinish in interface LayerSource

Parameters:

pageContext - The current context.

Returns:

true, if the method completed successfully

cancel

public void cancel(LayerSourcePageContext pageContext)

Description copied from interface: LayerSource

Aborts the operation of this layer source. This method is responsible for freeing all resources acquired by the layer source.

Specified by:

cancel in interface LayerSource

Parameters:

pageContext - The current context.