Eclipse Overview

Eclipse – State of the union- with a little, little focus on Linux
Lars Vogel
http://www.vogella.de
http://www.twitter.com/vogella

Lars Vogel
Working for SAP AG as a product manager
Privately contributing to in the Java and Eclipse ecosystem
Publish programming tutorials on http://www.vogella.de
Who am I ?

I used to use Linux / Unix quite a bit but this a while ago
Emacs and KDE rules!
My server for http://www.vogella.de runs on Ubuntu
I still think that the command line is cool
Me and Linux

Todays talk will be about Java and programming for and based on Eclipse

Eclipse is written in Javain little pieces (plugins)

Mini-Agenda
The Eclipse Ecosystem
Eclipse and modularity
Eclipse Plugin and RCP development
Eclipse 4.0 / Eclipse e4

The Eclipse Ecosystem

Successful Open Source Projects

Unlike other (successful) OpenSource Projects Eclipse has no mascot
This is NOT the animal representing Eclipse

Impact
Eclipse – History Book
Very disruptive for the pay IDE
Eclipse is a vendor independent Open Source Project
Nov. 2001 – Code released as
Open Source, still lead by companies
Febr. 2004 – Eclipse Foundation created

Impact
Eclipse – History Book
Start of Eclipse as a platform, e.g. NASA starts using Eclipse for it‘s Mars mission
Market leader with a strong ecosystem
Re-gain innovation speed
Juni 2004 – Eclipse 3.0 based
on OSGi and enables Eclipse
RCP
2010 - Current Eclipse 3.5.2
(aka Ganymede)
06.2010 Release of Eclipse 3.6
07.2010 Planned first release of Eclipse 4.0

Eclipse Foundation
The Eclipse Foundation is a not-for-profit, member supported corporation that hosts the Eclipse projects and helps cultivate both an open source community and an ecosystem of complementary products and services.

Eclipse Foundation does not pay developers
Member companies and private persons develop the code

STRATEGIC MEMBERS

ALL MEMBERS

Members, there are 160 as of today.
14 Strategic
3 Enterprise
74 Solutions
69 Associate

Eclipse Projects
Over 100 Eclipse projects
Originally very IDE focused but start getting divers
http://www.eclipse.org/projects/listofprojects.php

CDT
C and C++ development
JDT
Java Development Tools
and much, much more…
Egit
Git with Java
PHP
Runtime
Equinox (OSGi)
RAP
…
WebtoolsPlatform
JSF
JPA
Webservices
HTML
JavaScript
PDE
Plugin Development Tools

Eclipse Download Statistics
Downloads bundle several projects

All Eclipse.org source code is released under the Eclipse Public License (EPL)

EPL is business friendly
Do what you want with the code
Modification of the original code must be contributed back
NOT viral like the GPL which companies like

22
Eclipse & third parties
Google
GWT
Google App Engine
Android Dev tools
ZEND
PHP Studio
IBM
Webspere
Jazz
And many more

The Eclipse community
Very welcoming
Eclipse forums
PlanetEclipse.org
#eclipse at IRC
Seems to be individual driven rather then company driven

I use Eclipse for Kernel Development
* Quote complete made up by Lars

The modular architecture of Eclipse

Extensible Application - Firefox
Plugins
The Browser

In Eclipse everything is a plugin (except the core runtime)
Plugin
Plugin
Plugin
Plugin
Plugin
Runtime

Platformvrs. Extensible Application
Platform
Extensible Application
Application
Runtime

Eclipse IDE
Help
P2 Update
Text
Compare
Debug
Search
Team/ cvs
IDE personality
Workbench
Resources
JFace
Runtime / Equinox (OSGi)
SWT

Each Plugin defines its available API

Each Plugin defines also its dependencies

Runtime (OSGi) makes sure the API contacts are fulfilled

Plugin and RCP Development

Your plugins
Eclipse IDE

MANIFEST.MF – Defines OSGi bundle
plugin.xml – Defines Eclipse extensions and extension points
PDE (Plug-in Development Environement) provides editors for these files.
Configuration files

Extensions
Extension Points
Provide functionality to predefined slots (== extension points)
Define places where others (== extensions) can provide functionality

Eclipse extensibility is a little bit like Emacs, you can add easily functionality
But not in LISP

Thin layer upon the native GUI libraries
JNI calls
Not a lot of convenient functionality
SWT - Standard Widget Toolkit
Example Gnome GTK+ for Linux
*Screenshot from the Internet

Eclipse RCP
Help
P2 Update
…
…
…
…
…
…
Workbench
…
JFace
Runtime / Equinox (OSGi)
SWT

JFace
UI toolkit that provides helper classes for developing UI features
Tables / TreeViewer / Dialogs /
Can be based on models
Databinding
Workbench
multi-window environment
manages views, editors, perspectives
JFace & Workbench

Viewer: Table / Treeviewer: Responsible for the UI
LabelProvider: How is the domain model represented
ModelProvider: Delivery the domain model
ViewerSorter: Sorts values in the viewer
ViewerFilter: Filters values
Example: JFace Viewer
ContentProvider –
„Dao“ for viewer
LabelProvider –
Which data is represented how
Viewer –
UI, shows data

The future of Eclipse – Problems & Solutions

All Eclipse code must be free of IP problems
IP Due Dilligence take a lot of time

Eclipse.org moving to git (jgit)
Does Eclipse need a fork?
Hope to enrich the ecosystem by making forking easy

Eclipse.org moving towards git
Hope to enrich the ecosystem by making forking easy

Eclipse development got more and more complex over the years
Eclipse 4.0 (aka e4)
Developer Productivity

Eclipse 4.0

Eclipse e4 Scope
Targets developmentfor Eclipse (plugins) or based on Eclipse (Eclipse RCP).

Eclipse e4 Targets
Make Eclipse development more effective and the result more visual appealing.

Eclipse e4 – Building blocks
Declarative Styling
Rendering Engine
Modeled Workbench
Dependecy Injection
IEclipseContext
Core Services

The Modeled Workbench

Eclipse 4.0 Application model
Models the Application (UI) and the behavior (commands)
EMF based
Modeled Workbench
Content of the view not part of the e4 model

The e4 Workbench Model
Each application has it‘s live model
Workbench window
Menu with menu items
Window Trim, e.g. toolbar with toolbar items
Parts Sash Container
Parts
Part Stack (CTabFolder)
Parts
Handlers
Key Bindings
Commands

Model is Flexible
No distinction between View and Editor
Perspectives are optional
Stack / Sash are optional
Several windows easily possible
Flexible Toolbars

Parts in Eclipse 4.0
Plain Old Java Objects (POJO‘s)

InherianceHierachy of Views Parts before Eclipse 4.0
Object
EventManager
WorkbenchPart
ViewPart
View

Model available at runtime

How is this model translated into UI components?
© Lars Vogel and others, Licensed under Creative Commons by-nc-nd-3.0 (de)

Widget Renderer
Each UI elements gets a renderer
Renderer manage Lifecycle of the UI-Element
Creation
Model to widget binding
Rendering
Disposal

Renderer: flexible but complex

e4 CSS Styling

Eclipse3.X - IDE feeling
Eclipse e4 – CSS Styling
Example from Kai Toedter
Some elements cannot currently not be styled:
Menu bar background
Table headers
e4 supports theme switching during runtime

New Look & Feel for Eclipse e4 – SDK
https://bugs.eclipse.org/bugs/show_bug.cgi?id=293481

The e4 Programming Model

Dependency Injection
Inversion of control: The necessary functionality is injected into the class
Java Class

Dependency Injection in e4
JSR 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

Java Class
Services are injected via the the e4 framework
publicclassListView {
@Inject
privateIEclipseContextcontext;
@Inject
private Loggerlogger;
@Inject
publicListView(Composite parent) {
// ...

Eclipse and the web
Eclipse e4 targets to bring the Eclipse IDE closer to the web
One way would be to run Eclipse in the web, e.g. via Eclipse RAP
Another way would be to run the web inside Eclipse

OpenSocial Gadgets

OpenSocial Gadgets in Eclipse

Photo credits
Not the Eclipse mascot http://www.sxc.hu/photo/666565
Blue Sky with corn: http://www.sxc.hu/photo/570500
Headless business man http://www.sxc.hu/photo/713927
Money http://www.sxc.hu/photo/767230
Old Book http://www.sxc.hu/photo/1273173
Plug 1 http://www.sxc.hu/photo/603920
Plug 2 http://www.sxc.hu/photo/182575
USB Plug http://www.sxc.hu/photo/951745
Lots of Plugs http://www.sxc.hu/photo/721092
Police 1 http://www.sxc.hu/photo/860421
Police 2 http://www.sxc.hu/photo/596144
Boy in the water http://www.sxc.hu/photo/1022035
Eye with the world in them http://www.sxc.hu/photo/928425
Electronic parts http://www.sxc.hu/photo/643720
Snail 1 http://www.sxc.hu/photo/1181451
Snail 2 http://www.sxc.hu/photo/1181452
Fork http://www.sxc.hu/photo/1186818
Hammer http://www.sxc.hu/photo/604247
Corn http://www.sxc.hu/photo/939151
Thinking man http://www.sxc.hu/photo/324541
Chess http://www.sxc.hu/photo/958410
Pill box http://www.sxc.hu/photo/510413
Under construction http://www.sxc.hu/photo/ 1268302
Singleton: http://www.sxc.hu/photo/ 988381
Thank you picture http://www.sxc.hu/photo/ 986313
Runtime model http://www.sxc.hu/photo/ 765733
Screws http://www.sxc.hu/photo/1148064
House with compartments http://www.sxc.hu/photo/494103
Stacked stones http://www.sxc.hu/photo/998524
Thinking Guy http://www.sxc.hu/photo/130484
Drawing Hand http://www.sxc.hu/photo/264208
Waiter http://www.sxc.hu/photo/157966
Syringe / Injection: http://www.sxc.hu/photo/ 468493
Smiley http://www.sxc.hu/photo/ 1211480
Lock http://www.sxc.hu/photo/ 352344
Life Cycle http://www.sxc.hu/photo/ 1265027

Eclipse: Where to go from here:
Eclipse Wiki
http://wiki.eclipse.org/
Eclipse Plugin Development
http://www.vogella.de/articles/EclipsePlugIn/article.html
Eclipse RCP Tutorial
http://www.vogella.de/articles/RichClientPlatform/article.html
Eclipse e4 Tutorial
http://www.vogella.de/articles/EclipseE4/article.html
Eclipse e4 Whitepaper
http://www.eclipse.org/e4/resources/e4-whitepaper.php

Thank you
For further questions:
Lars.Vogel@gmail.com
http://www.vogella.de
http://www.twitter.com/vogella

License & Acknowledgements
This work is licensed under the Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Germany License
See http://creativecommons.org/licenses/by-nc-nd/3.0/de/deed.en_US

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Eclipse Overview

by Lars Vogel on Apr 29, 2010

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Eclipse Overview — Presentation Transcript