Eclipse e4 on Java Forum Stuttgart 2010
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Eclipse 4.0, also known as Eclipse e4, is an incubator project that will produce the Eclipse 4.0 software development kit (SDK). Eclipse e4 aims to modernize the Eclipse programming model to make development easier and provide a more visually appealing and flexible user experience. It uses a new modeled workbench based on plain old Java objects (POJOs) rather than the complex and inheritance-based programming model of Eclipse 3.x. This allows aspects of the user interface like perspectives and toolbars to be defined declaratively using XML models rather than code. Dependency injection also reduces boilerplate code. Styling is implemented through CSS for greater flexibility and customization of themes.
Eclipse e4 on Java Forum Stuttgart 2010
- 1. Eclipse 4.0 ….also known as Eclipse e4Lars Vogelhttp://www.vogella.dehttp://www.twitter.com/vogella
- 2. Eclipse e4 -Agenda What is e4?Whom does e4 try to help?Building blocksQ&A
- 3. Eclipse e4Eclipse e4 is the incubator project which will produce the Eclipse 4.0 SDK
- 4. How does Eclipse e4 help me?
- 5. Java MEJava EEJava SEAndroid, Spring, GWT,….
- 6. Eclipse e4 ScopeMake developmentfor Eclipseeasier
- 7. from Eclipse DeveloperEclipse E4to Eclipse Developer
- 8. At the beginning Eclipse e4 will not produce valuable functionality for the user of the Eclipse IDE……
- 9. Mid- and long term …much better toolingBy modernizing the Eclipse programming model the user will benefit from the increased development speedOnly little things……
- 10. So, what’s wrong with Eclipse 3.X?
- 11. Eclipse 3.x programming modelComplexLots of APIPlatform functionality via singletonsNot easy to testNot a consistent way to define the UI
- 12. Inheritance in Eclipse 3.XObjectEventManagerWorkbenchPartViewPartView
- 13. The smallest Eclipse RCP app in Eclipse 3.XAlready looks like the Eclipse IDELots of boilerplate code
- 14. If only Eclipse development would be easier and more visual appealing.14
- 15. The first amazing change Eclipse e4 uses Java 1.5 language features!AAbout time I would say….
- 16. Eclipse e4 – Building blocksModeled WorkbenchRendering EngineDeclarative StylingDependecy InjectionContextCore Services
- 18. The e4 Workbench Modele4 Workbench ModelEMF inside
- 19. The e4 Workbench ModelWorkbench window Menu with menu items Window Trim, e.g. toolbar with toolbar items Parts Sash ContainerPartsPart Stack (CTabFolder)PartsHandlersKey BindingsCommands
- 20. Model is FlexibleNo distinction between View and EditorPerspectives are optionalStack / Sash are optionalSeveral windows possibleFlexible Toolbars
- 21. Model removes the need for boilerplate codeMinimal Eclipse e4 app: zero classes
- 22. Model URI’sThe Part in the ModelThe Part’s URI
- 23. Lessions learned from Java Web developmentThe POJO* has won!* Plain Old Java Objects
- 24. Model Elements in e4POJO‘s
- 25. Usage of annotationsAnnotations are usedTo indicate which methods are called
- 26. Model available at runtime
- 27. Limits of the e4 application modelOnly models the Application (frame)Modeled WorkbenchContent of the individual Parts not included in the model
- 28. How is this model translated into UI components?© Lars Vogel and others, Licensed under Creative Commons by-nc-nd-3.0 (de)
- 29. Model and UI RenderersModelI don’t care who draws meThe Workbench model is independent of a specific UI toolkit
- 30. RenderersWidget RendererRenderer FactoryReturns for every model element Standard SWT renderer can be exchanged
- 31. Renderer: flexible but complex
- 32. e4 CSS Styling
- 33. In reality all RCP apps look like the an IDE
- 34. Eclipse3.X - IDE feelingEclipse e4 – CSS StylingExample from Kai ToedterLimitations for: Menu bar background
- 35. Table headers e4 supports theme switching during runtime
- 36. How to enable CSS StylingExtension point "org.eclipse.e4.ui.css.swt.theme“ defines the style sheet<extension point="org.eclipse.e4.ui.css.swt.theme"> <themebasestylesheeturi="css/styles.css" id="org.eclipse.e4.minimal.theme.standard" label=“Standard"> </theme></extension>
- 37. How to enable CSS StylingProperty "cssTheme” for extension point "org.eclipse.core.runtime.products" selects the initial theme <extension id="product" point="org.eclipse.core.runtime.products"> <product application="org.eclipse.e4.ui.workbench.swt.E4Application" name="E4 Contacs Demo"> .... <property name="cssTheme" value="org.eclipse.e4.demo.contacts.themes.darkgradient"> </property> ....
- 38. Example CSSLabel { font: Verdana 8px; color: rgb(240, 240, 240);}Table { background-color: gradient radial #575757 #101010 100%; color: rgb(240, 240, 240); font: Verdana 8px;}ToolBar { background-color: #777777 #373737 #202020 50% 50%; color: white; font: Verdana 8px;}
- 39. JavaLabel label = new Label(parent, SWT.NONE);label.setData("org.eclipse.e4.ui.css.id", "SeparatorLabel");CSS#SeparatorLabel { color: #f08d00;}Assign custom attributes
- 40. New Look & Feel for Eclipse 4.0 – SDK https://bugs.eclipse.org/bugs/show_bug.cgi?id=293481
- 41. The e4 Programming Model
- 42. Dependency InjectionInversion of control: The necessary functionality is injected into the classJava Class
- 43. Dependency Injection in e4JSR 330 compatible injection implementation@javax.inject.Inject – Field, Constructor and Method injection@javax.inject.Named – Specify a custom qualifier to context object (default is fully qualified classname of the injected type)e4 specific annotations, e.g. @Optional
- 44. Java Class Services are injected via the the e4 frameworkpublicclassListView { @Inject privateIEclipseContextcontext;@Inject private Loggerlogger; @Inject publicListView(Composite parent) {// ...
- 45. Lifecycle@PostConstruct: Called after Object created and Fields- and Methods-Injection finished
- 46. @PreDestroy: Called before the object is destroyed (e.g. the Part shown in the UI is removed)What can be injected?
- 47. IEclipseContextStores information of possible Injection ValuesOSGi Services part of the ContextDefine your own services and use DI for them
- 48. Example: Writing HandlersMethod identified via @Execute annotationCan have any number of argumentsUse IServiceConstants for general context informationspublic class AboutHandler {@Execute public void execute(@Named(IServiceConstants.ACTIVE_SHELL) Shell shell){MessageDialog.openInformation( shell, "About", "e4 Application example."); }}
- 49. Services© Lars Vogel and others, Licensed under Creative Commons by-nc-nd-3.0 (de)
- 50. Eclipse Application Services (“Twenty Things”)Long-running operations
- 52. Error handling
- 53. Navigation model
- 55. Status line
- 56. Drag and drop
- 57. Undo/Redo
- 59. Preferences
- 60. Editor lifecycle
- 61. Receiving input
- 63. Standard dialogs
- 65. Logging
- 66. Interface to help system
- 68. Authentication
- 69. Authorization
- 70. Don‘t forget: OSGi services are also available via dependency injectionContributions
- 71. ContributionsExtension point “org.eclipse.e4.workbench.model”Fragments – XMI snippetsProcessor - Code
- 72. Context CommunicationChange the contextcontext.modify("selection", selection.getFirstElement());Get Notified@Injectpublic voidsetPerson(@Named("selection") @Optional Person person) {master.setValue(person);}
- 73. Eclipse e4 – There is moreXWTOpen Social GadgetsToolkit Model JDT ???
- 74. Photo creditsOpen Door http://www.sxc.hu/photo/1228296Guy http://www.sxc.hu/photo/423354Corn http://www.sxc.hu/photo/939151About time guy http://www.sxc.hu/photo/1173019Thinking man http://www.sxc.hu/photo/ 324541Cool but hurts http://www.sxc.hu/photo/ 906072WWW http://www.sxc.hu/photo/987822Present http://www.sxc.hu/photo/1140205Happy figure http://www.sxc.hu/photo/125901Chess http://www.sxc.hu/photo/ 958410Pill box http://www.sxc.hu/photo/ 510413Syringe / Injection: http://www.sxc.hu/photo/ 468493Smiley http://www.sxc.hu/photo/ 1211480Lock http://www.sxc.hu/photo/ 352344Life Cycle http://www.sxc.hu/photo/1265027Powerful but complex http://www.sxc.hu/photo/607988Baby photo not yet publishedExcellent http://www.sxc.hu/photo/866529Thank you picture http://www.sxc.hu/photo/ 986313
- 81. House with compartments http://www.sxc.hu/photo/494103
- 87. Books http://www.sxc.hu/photo/1184809e4: Where to go from here:Eclipse e4 Wikihttp://wiki.eclipse.org/E4Eclipse e4 Tutorialhttp://www.vogella.de/articles/EclipseE4/article.html
- 89. Thank youFor further questions:Lars.Vogel@gmail.comhttp://www.vogella.dehttp://www.twitter.com/vogella
- 90. License & AcknowledgementsThis work is licensed under the Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Germany LicenseSee http://creativecommons.org/licenses/by-nc-nd/3.0/de/deed.en_US