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To modify the Initial and Final States in Yakindu SCT Editor, we need the following steps:

Modify the Metamodel

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in org.yakindu.sct.model.sgraph/model/emf/sgraph.genmodel

by adding two attributes (isInitial, isFinal) to the State Class.

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And then generate the EMF Model Code.

Modify the State Figure in org.yakindu.sct.ui.editor/src/org/yakindu/sct/ui/editor/editor/figures/StateFigure.java

by setting the constants NORMAL_BORDER_WIDTH and THICK_BORDER_WIDTH and adding two variables isDoubleLineBorder and isThickBorder. If the value of isDoubleLineBorder is set to true, the RoundedRectangle is represented with a double line border. If the value of isThickBorder is set to true, the RoundedRectangle is represented with a thicker line border.

Overwrite the outlineShape method.

and And add the method getBorderWidth

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Modify the Propertysheets in org.yakindu.sct.ui.editor/src/org/yakindu/sct/ui/editor/propertysheets/StatePropertySection.java

 by by adding an Is Initial ComboBox and an Is Final ComboBox. The user may select the option true or false.

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After that, the State Properties View will look like this:

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Modify the State EditPart in org.yakindu.sct.ui.editor/src/org/yakindu/sct/ui/editor/editparts/StateEditPart.java

 by adding the following code lines in the method handleNotificationEvent to update the border width or to add a double line border to the state, if the user changes the Is Initial or Is Final options.

Remove the Initial and Final State Icon from the

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palette in org.yakindu.sct.ui.editor/plugin.xml

by removing them from the list of Elements situated in the file org.yakindu.sct.ui.editor/plugin.xml.

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Modify the SGraphValidator in org.yakindu.sct.model.sgraph/src/org/yakindu/sct/model/sgraph/util/SGraphValidator.java

 Modify the SGraphValidator.

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Modify the creation wizard

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in org.yakindu.sct.ui.editor/src/org/yakindu/sct/ui/editor/factories/FactoryUtils.java

The creation wizard creates a new diagram which includes an Initial State and a Normal State. We should modify the creation wizard by modifying the method createStatechartModel (org.yakindu.sct.ui.editor/src/org/yakindu/sct/ui/editor/factories/FactoryUtils.java)

Clean the code 

Clean the

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code where the old Initial and Final States are implemented (FinalStateFigure, InitialStateFigure, ...)