emf.edit: a story of adapters

EMF.EditA Story of Adapters

Mikaël BarberoObeo

Eclipse Con North America 2014March 20, 2014

© John W

ilhelm http://500px.com

/photo/59208448

Super Java Beans

© Rangizzz http://500px.com/photo/30648317

On Steroids© Max Ellis http://500px.com/photo/57968110

© Rangizzz http://500px.com/photo/43660830

Today’s Workout Routine

Connecting the Viewer

Changing the Labels

Changing the Content

Connecting the viewers

Exercise 1

Model View

Controller

Listening for Reacting to

CHANGES

notifies

adapts

Notifier Adapter

Listener pattern Notifier is the observable and Adapter is the observer

5

Notification Message from the Observable to the Observer

TreeViewer

Chain of notifications Explains the importance of calling dispose()

Adapter Factory Content

& Label Provider

Item Provider Adapter Factory

Item ProviderEObject

Update or Refresh Or how to be smart when notifying the viewer

TreeViewerAdapter

Factory Content & Label Provider

Item Provider Adapter Factory

Item ProviderEObject

#notifyChanged

Update or Refresh Or how to be smart when notifying the viewer

Provider type Singleton

Book Item

Provider

Book

Book Book

Provider type Stateful

Book Item

ProviderBook

Book

Book

Book Item

Provider

Book Item

Provider

TreeViewer

Composed Adapter Factory Look for the proper adapter factory for each type of object

Item Provider Adapter Factory

Item Provider Adapter Factory

Item Provider Adapter Factory

Adapter Factory Content

& Label Provider

Item Provider Adapter Factory

Item ProviderEObject

Code is Available

https://github.com/mbarbero/econ-na-2014-emf-edit

Tags demo1 and demo2

Changing the Labels

Exercise 2

XXXItemProvider#getText(Object) Easy

src

src-gen

Generation gap pattern Treat generated code as byte code

Item

Book Periodical BookOnTape

Video Cassette

TreeViewerAdapter

Factory Content & Label Provider

Item Provider Adapter Factory

Item ProviderEObject

Decorators of AdapterFactory and ItemProvider

TreeViewer

Decorators of AdapterFactory and ItemProvider

ItemAdapter

Factory Content & Label Provider

Item Provider Adapter Factory

ItemItem ProviderEObject

Code is Available

https://github.com/mbarbero/econ-na-2014-emf-edit

Tag demo3

Changing the Contents

Exercise 3

XXXItemProvider#getChildren(Object) Easy

TreeNode

Tree Model Wrap EObjects

EObjectdata

TreeViewer

Tree Model Wrap EObjects

ItemAdapter

Factory Content & Label Provider

Item Provider Adapter Factory

Item ItemItem ProviderEObject

Beware of too many notifications Make your item providers stateful

EObjectEObject

EObject

Beware of too many notifications Make your item providers stateful

Tree Node

Tree Node

Tree Node

Beware of too many notifications Make your item providers stateful

Tree NodeItem Provider

Tree NodeItem Provider

Tree NodeItem Provider

Beware of too many notifications Make your item providers stateful

EObject ItemProvider

Beware of too many notifications Make your item providers stateful

EObject ItemProvider

Beware of too many notifications Make your item providers stateful

Code is Available

https://github.com/mbarbero/econ-na-2014-emf-edit

Tag demo4

Connecting the Viewer

Changing the Labels

Changing the Content

Recap

Q & A

Mikaël Barbero mikael.barbero@obeo.fr +Mikaël Barbero @mikbarbero

Obeo http://www.obeo.fr