Eclipse Training - Introduction

Eclipse Plug-ins
and RCP
Training Course
Introduction and Architecture
October 2013Copyright © 2013 Luca D’Onofrio – RCP Solutions
1

1. Eclipse Introduction and Architecture
2. Standard Widgets Toolkit
3. JFace
4. Standard Extension Points and APIs
5. Defining your own Extension Points
6. Rich Client Platforms & Industrialization
Training Course Agenda
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∗ Eclipse IDE is a multi-domain, multi-language
Integrated Development Environment
∗ Eclipse is an Extensible platform for tool integration
based on industry standards
∗ Cross-platform environment
∗ EPL (Eclipse Public License): let you build an distribute
commercially-friendly open/closed source software
∗ Eclipse Foundation and Development Community
support
Introduction
Why Eclipse?
October 2013
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Copyright © 2013 Luca D’Onofrio – RCP Solutions

∗ Overcome the following challenges that may
arise regularly in the development of tools:
∗ Pressure to cut costs
∗ Reducing integration time
∗ Cost effective, secure and easy maintenance
∗ Deliver value and reduce risks
∗ Automation of software updates
∗ Standardization
Introduction
Advantages (1/3)
October 2013
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∗ Create a new business model that relies on
shifting the commercial value away from the
actual products and generating revenue from
the auxiliary services around the product:
∗ systems integration
∗ enrich business solutions
∗ support
∗ customizations
∗ tutorials and documentation
Introduction
Advantages (2/3)
October 2013
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∗ Proprietary software lack in imagination. They have only one business model:
∗ “EULA Ware — Give me money. Now go away. It doesn’t work? Go away. You want your
money back? Read your EULA, and go away. You want to see the software? Go away.”
∗ Open source forces companies to use their imagination. They can’t feed people EULA
Ware, so they must make money in other ways:
∗ “Support Ware — Pay us money and we’ll support the software. We’ll answer your
questions. Or we’ll try to. Over the phone, on the Web, whatever. Pay us enough and we’ll
come over.”
∗ “Project Ware — Need something done? We’ll do it. Pay us for our work, and pay us for
the project. Or try our software and buy our hardware.”
∗ “Foundation Ware — Our software has a foundation. (e.g. base your product on the
Eclipse related environment and tools)”
∗ The great thing about Eclipse World is that you don’t have to use just one business model.
You can mix-and-match as you see fit.
A new business model
October 2013
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Eclipse Releases and Packages
∗ Current releases
∗ Eclipse Kepler (4.3)
∗ Archived releases
∗ Eclipse Juno (4.2)
∗ Eclipse Indigo (3.7)
∗ Eclipse Helios (3.6)
∗ Eclipse Galileo (3.5)
∗ Main Packages
∗ JDT (Java/Java EE)
∗ PDE (RCP/RAP)
∗ CDT (C/C++)
∗ WTP (Web)
∗ EMF (Modeling)
∗ XML
∗ BIRT
∗ GIT, SVN, …
∗ UML
∗ XText
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∗Java
∗XML
∗Design Patterns
Course Pre-Requisites
October 2013
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1. Eclipse General Architecture
2. Eclipse UI
a) Workbench, Workspace and Resources, Perspectives, Views
and editors, Preference and Properties pages, Menu and
Toolbar, Launch configurations.
3. Eclipse Plug-ins Ecosystem
a) OSGI, Bundles and Manifest
b) Plugins, Extensions, Extension Points, Features, RCP
4. Using the PDE
a) Creating, debugging and delivering plugins, fragments,
features and update sites.
Agenda
October 2013
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Eclipse General Architecture
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∗ The term Workbench refers to the desktop development environment. The
Workbench aims to achieve seamless tool integration and controlled
openness by providing a common paradigm for the creation, management,
and navigation of workspace resources.
∗ Each Workbench window contains one or more perspectives. Perspectives
contain views and editors and control what appears in certain menus and
tool bars.
∗ More than one Workbench window can exist on the desktop at any given
time.
TIP: command line and JVM arguments
Eclipse UI
Workbench
October 2013
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∗ The workspace is the container that allows a user to gather
various source code files and resources and work with them as a
cohesive unit.
∗ TIP: “Do I have to duplicate then my projects if using with different
versions of Eclipse in parallel?” NO, because the workspace folder
does not have to have the projects in it (as folders). They can, but
it is not needed.
∗ TIP: Workspace preferences
∗ TIP: Workspace .metadata (workspace structure and platform
dependent settings)
Eclipse UI
Workspace
October 2013
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∗ Eclipse handles its own file system that manage resources
∗ Eclipse file system provides internal features that allow the synchronization between local platform-
dependent file system.
∗ Files: Comparable to files as you see them in the file system.
∗ Folders: Comparable to directories on a file system. In the Workbench, folders are contained in
projects or other folders. Folders can contain files and other folders.
∗ Projects: Contain folders and files. Projects are used for builds, version management, sharing, and
resource organization. Like folders, projects map to directories in the file system. (When you create a
project, you specify a location for it in the file system.) ( .project, Working sets). A project is either
open or closed.
TIP: closed projects require less memory. Since they are not examined during builds, closing a project can
improve build time.
∗ Linked Resources: Folders and files can be linked to locations in the file system outside of the
project's location. These special folders and files are called linked resources.
TIP: Different tools that plug into the Workbench use their own specialized types of projects, folders, and
files.
Eclipse UI
Resources
October 2013
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∗ Perspective:
∗ A perspective defines the initial set and layout of views in the Workbench window. Within the
window, each perspective shares the same set of editors. Each perspective provides a set of
functionality (menus / toolbars) aimed at accomplishing a specific type of task or works with
specific types of resources.
∗ Editor:
∗ Specialized view that USUALLY operates on file resources and provides mechanisms for
resource life-cycle. ( sync example)
∗ Any number of editors can be open at once, but only one can be active at a time. The main
menu bar and toolbar for the Workbench window contain operations (editor contribution)
that are applicable to the active editor.
∗ View:
∗ Views support editors and provide alternative presentations as well as ways to navigate the
information in your Workbench. ( Project Explorer, Problems, Errors, Properties, …)
∗ Views can have their own menus and toolbars
TIP: Editor can be instantiated more then once; usually there is only one instance of a view.
Eclipse UI
Perspectives, Editors and Views
October 2013
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∗ Menus:
∗ Menu bar
∗ Popup menu
∗ Toolbars:
∗ Workbench main toolbar and editor contributions
∗ Views related toolbar
∗ Preferences:
∗ Control the behavior of Workbench features
∗ Properties:
∗ Control the behavior of Resources features.
∗ Workspace related (.settings)
Eclipse UI
Menus, Toolbars, Preference and Properties
October 2013
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∗ Toobar commands
∗ Popup menu commands
∗ Build-in run configurations
∗ Run / Debug
∗ External tools
Eclipse UI
Launch configurations
October 2013
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∗ Everything can be extended
∗ Everything can be referenced by its own id
Eclipse UI Concepts and Terms
October 2013
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Platform
PlatformUI
Selection Providers
Selection Events
Resource Change
Jobs
Commands
Handlers
Actions
Multipage Editor
Form Editor
Pref/Prop Pages
Project Natures
Project Builders
Resource Path

Eclipse Plug-ins Ecosystem
OSGI
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∗ The OSGi technology is a set of specifications that
define a dynamic component system for Java.
∗ These specifications enable a development model
where applications are (dynamically) composed of
many different (reusable) components.
∗ Bundles : Bundles are the OSGi components made by the developers. terms
plug-in and bundle are interchangeable ( class hierarchy).
∗ Services : The services layer connects bundles in a dynamic way by offering a
publish-find-bind model for plain old Java objects.
∗ Life-Cycle : The API to install, start, stop, update, and uninstall bundles.
∗ Modules : The layer that defines how a bundle can import and export code.
∗ Security : The layer that handles the security aspects.
∗ Execution Environment : Defines what methods and classes are available in a
specific platform.

∗ Manifest-Version
∗ Bundle-ManifestVersion:
∗ Bundle-Name
∗ Bundle-SymbolicName
∗ Bundle-Version
∗ Bundle-Activator
∗ Bundle-Vendor
∗ Require-Bundle
∗ Bundle-RequiredExecutionEnvironment
∗ Bundle-ActivationPolicy
∗ Bundle-ClassPath
∗ Export-Package
TIP: An Activator class can be «singleton»
TIP: Accessing an activator or a plugin class requires the containing plugin to be loaded,
where interacting with the Bundle interface not.
Bundles and Manifest
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October 2013
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∗ The PDE provides a comprehensive plug-in development environment.
∗ PDE Views
∗ The Plugin registry view
∗ The Plugins view
∗ The Plugin dependencies view
∗ The Plugin Spy (Alt+Shift+F1)
∗ PDE Wizards
∗ Plugins Wizard & Extension Templates
∗ Features Wizard
∗ Update Site Wizard
∗ Running and Debugging your plugins
TIP: You can use fragments to extends functionality of another plugin: typically there are
used to supply alternative language packs or platform specific implementation classes.
Using the PDE
October 2013
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∗ www.eclipse.org
∗ Eclipse SDK update site
∗ help.eclipse.org
∗ wiki.eclipse.org
∗ www.osgi.org
References
October 2013
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∗ Eclipse Plug-ins (3rd Edition): Building Commercial-Quality Plug-ins
(Eclipse Series) - Eric Clayberg e Dan Rubel (11 dic. 2008)
∗ Design Patterns: Elements of Reusable Object-Oriented Software -
Gamma, Erich, Helm, Richard, Johnson, Ralph e Vlissides, John (31
ott. 1994)
∗ Thinking In Java: The definitive introduction to object-oriented
programming in the language of the world wide... - Bruce Eckel (3
feb. 2006)
∗ Xml Bible di Elliotte Rusty Harold e Harold (17 ago. 1999)
∗ XML Programming Bible: Bible Series, Book 129
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October 2013
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