Eclipse Training - Introduction

Eclipse Plug-ins and RCP

Training CourseIntroduction and

Architecture

October 2013Copyright © 2013 Luca D’Onofrio – RCP Solutions1

1. Eclipse Introduction and Architecture2. Standard Widgets Toolkit3. JFace4. Standard Extension Points and APIs5. Defining your own Extension Points6. Rich Client Platforms &

Industrialization

Training Course Agenda


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

IntroductionWhy Eclipse?

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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

IntroductionAdvantages (1/3)

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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

IntroductionAdvantages (2/3)

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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

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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


JavaXMLDesign Patterns

Course Pre-Requisites

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1. Eclipse General Architecture2. Eclipse UI

a) Workbench, Workspace and Resources, Perspectives, Views and editors, Preference and Properties pages, Menu and Toolbar, Launch configurations.

3. Eclipse Plug-ins Ecosystema) OSGI, Bundles and Manifestb) Plugins, Extensions, Extension Points, Features, RCP

4. Using the PDEa) Creating, debugging and delivering plugins, fragments,

features and update sites.

Agenda

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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 UIWorkbench

October 201311


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 UIWorkspace

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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 UIResources

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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 UIPerspectives, Editors and

Views

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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 UIMenus, Toolbars, Preference and

Properties

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Toobar commands

Popup menu commands

Build-in run configurations Run / Debug External tools

Eclipse UILaunch configurations

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Everything can be extended Everything can be referenced by its own id

Eclipse UI Concepts and Terms

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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 PathCopyright © 2013 Luca D’Onofrio – RCP Solutions

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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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

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www.eclipse.org Eclipse SDK update site help.eclipse.org wiki.eclipse.org www.osgi.org

References

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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

Books

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Technology

Eclipse Training - Introduction