Combining Text and Graphics in Eclipse-based Modeling Tools

Combining Graphics and Text in Modeling Tools Jan Köhnlein

GMF Graphical

GMF Graphical Xtext Textual

GMF Graphical Just two different views on the same thing Xtext Textual

Synchronization

Xtext Textual Model Serializer Parser Node Model Ecore Model Instance

Xtext XtextResource Textual Model Serializer Parser Node Model Ecore Model Instance

Xtext XtextResource Textual Model Serializer Parser Node Model Ecore Model Instance getContents()

Xtext load(), save() XtextResource Textual Model Serializer Parser Node Model Ecore Model Instance getContents()

Xtext load(), save() XtextResource Textual Model Serializer Parser Node Model Ecore Model Instance FragmentProvider getContents() getURIFragment() getEObject()

ResourceSet XtextResource DiagramResource

diagram change ResourceSet XtextResource DiagramResource

reparse() w/ errors ResourceSet XtextResource DiagramResource

ResourceSet XtextResource DiagramResource Canonical EditPolicy

Fi e l od a M xtu le l Te ResourceSet ResourceSet XtextResource XtextResource DiagramResource

Fi e l od a M xtu le l Te ResourceSet ResourceSet XtextResource save() XtextResource DiagramResource

Fi e l od a M xtu le l Te ResourceSet ResourceSet XtextResource reload() XtextResource DiagramResource

Fi e l od a M xtu le l Te ResourceSet ResourceSet XtextResource XtextResource DiagramResource

Demo Time

Create a Diagram

Save Diagram

Open Textual Model

Edit Textual Model

Save Textual Model

Edit Diagram

Reorder Objects

Diagram With Unsaved Changes

Try to Edit Text

Other Way Around...

Navigation

Popup Editor

Alignment

grammar org.xtext.cg2009.Entities with org.eclipse.xtext.common.Terminals generate entities "http://www.xtext.org/cg2009/Entities" Model : {Model} (entities += Entity)*; Entity returns Entity: 'entity' (name=ID)? ('extends' superType=[Entity])? '{' (properties+=Property)* '}'; Property: SimpleProperty | ReferenceProperty; SimpleProperty: 'property' (name=ID)? ':' type=('String'|'Number'|'Bool'); ReferenceProperty : (name=ID)? 'refs' ('one' | many?='many')? type=[Entity];

grammar org.xtext.cg2009.Entities with org.eclipse.xtext.common.Terminals Avoid empty generate entities "http://www.xtext.org/cg2009/Entities" models Model : {Model} (entities += Entity)*; Entity returns Entity: 'entity' (name=ID)? ('extends' superType=[Entity])? '{' (properties+=Property)* '}'; Property: SimpleProperty | ReferenceProperty; SimpleProperty: 'property' (name=ID)? ':' type=('String'|'Number'|'Bool'); ReferenceProperty : (name=ID)? 'refs' ('one' | many?='many')? type=[Entity];

grammar org.xtext.cg2009.Entities with org.eclipse.xtext.common.Terminals Avoid empty generate entities "http://www.xtext.org/cg2009/Entities" models Model : {Model} (entities += Entity)*; Entity returns Entity: 'entity' (name=ID)? ('extends' superType=[Entity])? '{' (properties+=Property)* '}'; Property: Cover mandatory SimpleProperty | ReferenceProperty; properties in SimpleProperty: validation 'property' (name=ID)? ':' type=('String'|'Number'|'Bool'); ReferenceProperty : (name=ID)? 'refs' ('one' | many?='many')? type=[Entity];

grammar org.xtext.cg2009.Entities with org.eclipse.xtext.common.Terminals Avoid empty generate entities "http://www.xtext.org/cg2009/Entities" Carefully select models Model : containment or cross {Model} (entities += Entity)*; references Entity returns Entity: 'entity' (name=ID)? ('extends' superType=[Entity])? '{' (properties+=Property)* '}'; Property: Cover mandatory SimpleProperty | ReferenceProperty; properties in SimpleProperty: validation 'property' (name=ID)? ':' type=('String'|'Number'|'Bool'); ReferenceProperty : (name=ID)? 'refs' ('one' | many?='many')? type=[Entity];

Xtext Implement a Formatter

Xtext Implement a Formatter Implement a FragmentProvider

Xtext Implement a Formatter Implement a FragmentProvider Implement a JavaValidator

GMF Initialize mandatory properties

GMF Initialize mandatory properties Avoid Phantom Nodes

Add a transaction on GMF load Initialize mandatory properties Avoid Phantom Nodes

Glue Code • Prevent conﬂicting modiﬁcations • Navigate • diagram ➜ text • text ➜ diagram (needs index) • Popup editor • Shipped as an Xtext example

Thanks for your attention! More information at www.itemis.de www.xtext.org koehnlein.blogspot.com

Combining Text and Graphics in Eclipse-based Modeling Tools

by Jan Koehnlein

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