# Migrating to the Eclipse Layout Kernel

Last modified by uru on 2023/07/11 10:33
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The Eclipse Layout Kernel (ELK) is the official Eclipse project our layout technology will move to. As part of the move, expect changes in these areas:

- Plugin names
- Extension point names
- Package names
- Plugin structure
- KGraph meta model

To make migration easier for everyone, this page is intended to track all changes.

- The classes formerly provided by de.cau.cs.kieler.core are now to be found in org.eclipse.elk.core, with the following exceptions:
  - The ...properties package was moved to the .graph plugin.
  - ForwardingInputStream was moved to the ...graphviz.layouter plugin.
  - ForkedOutputStream was moved to the ...graphviz.layouter plugin.
- All pre-defined layout types now have the ID org.eclipse.elk.type.XXX
- All pre-defined diagram types now have the ID org.eclipse.elk.diagram.XXX
- All pre-defined layout options now have the ID org.eclipse.elk.XXX (except for options defined by specific layout algorithms, which have the ID org.eclipse.elk.ALGORITHM.XXX)
  - de.cau.cs.kieler.klay.layered.portAnchor is now org.eclipse.elk.portAnchor instead of org.eclipse.elk.layered.portAnchor
- All pre-defined layout algorithms now have the ID org.eclipse.elk.algorithm.XXX

- IKielerProgressMonitor -> IElkProgressMonitor

- ILayoutConfig -> LayoutConfigurator

- IVolatileLayoutConfig

  use LayoutConfigurator

  to set global options

  IVolatileLayoutConfig#setValue(prop, value)
  -->
  LayoutConfigurator#configure(KGraphElement.class).setProperty(prop, value)
- IDiagramLayoutManager -> IDiagramLayoutConnector

- LayoutManagerService -> LayoutConnectorsService

- LayoutListeners:

  DiagramLayoutEngine.INSTANCE.addLayoutTerminatedListener(new DiagramLayoutEngine.ILayoutTerminatedListener() {
  -->
  LayoutConnectorsService.getInstance().addLayoutListener(new ILayoutListener() {

- KimlUtil.loadDataElements(...) -> GraphDataUtil.loadDataElements(...)

Perhaps of lesser interest:

- We now depend on Google Guava 15 instead of 10.

## LayoutOptions

For the moment, see this confluence question.

521

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Created by cds on 2015/09/15 11:31

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