Integrating external products into eclipse

Integrating external products into Eclipse
Eclipse Day India 2011
Presenters:
Aditya Madduri
Girish Kumar Balre

Agenda
Need for Integration
Challenges in Integration
Eclipse Integration Points
Discussing different scenarios:
Web Services Testing Tool
Win32 Applications
Swing Applications

Leverage Eclipse’s predefined facilities and usability
Enforce company standards
Multiple tools under ONE application (e.g., IDE)
Improved usage of the screen real estate
Increased functionality thereby increased productivity
Retaining Legacy Applications
Huge customer base
Huge effort for full migration

Communication
Between different technologies
Between different languages
Attaching to Eclipse UI
Hosting foreign technology inside Eclipse UI
Event Handling, and
Wiring between views, menus etc

Eclipse Integration Points
Editor/View integration
Outline/Properties View integration
Problems View Integration
Toolbar/menu actions
Perspective
Preferences

Agenda…
Discussing different scenarios
Web apps
Win32 apps
Swing apps

Integrating Web Applications
Need a web server
Eclipse ships Jetty Server
Configure any server using WTP
Launching application
Toolbar/Menu actions
Needs Artifacts – Use Wizards
Links to different pages
Views
SWT Trees
Communicate between Web app & Eclipse controls
Eclipse  Web App (change URLs)
Web App  Eclipse (???)

Example: Progress Actional Diagnostics
Progress Actional Diagnostics
Progress Web Application with comprehensive Web Services testing capabilities having using browser front end
Rich functionality
Extensive support for various bindings
Pseudo code™ view, no XML required
Raw view
Pseudo code view

Example: Progress Actional Diagnostics (contd.)
Integration with Eclipse IDE
General
Wizards to create a Web Service Test
Allow user to begin testing immediately sans wizards using Untitled WS Test File(a la Untitled Text File)
Editor
Persist/load changes from custom file on Left pane
Left pane and right pane need to be kept in synch
Maintain state- mark as dirty when messages sent/received

Web Application
Root Contract
Binding
Operation
Messages
Right Pane: Browser Component
Left Pane: Tree for intuitive navigation

Changes to the tree should reflect in the browser and vice-versa
SWT Tree
Browser Component

Synching between the Tree and the Browser
Tree  Browser
Straightforward - Just need to change the URL set on the browser component
Browser  Tree
Complicated - ???

Producer Consumer Communication Model
The design pattern for sending messages between two or more clients.
Consumer/subscriber
Producer/publisher
Eclipse Editor
WS Web Application
Send Messages
Listens Messages

Consumer/subscriber
On receiving Message
Eclipse Editor
Parses the message
Listens to Messages
Updates the artifact file
with test’s current state
Updates and refreshes the tree

Agenda…
Web apps
Win32 apps
Swing apps

Integrating Win32 Applications
Use case: Hosting and Integrating a win32 application inside a Eclipse IDE.
Hosting:Bringing a win32 app to open inside an Eclipse UI
Integrating: The win32 app needs to
Respond to Eclipse’s menu actions (Open, Save, Exit)
Respond to resizing, minimizing, closing
Fire events to other Eclipse views

Desktop
Integrating Win32 Applications (contd.)
Hosting:Opening a win32 app to open inside an Eclipse
Solution:
Each window has a handle (hWnd)
property i.e., a UID
Win32 API offers a SetParent
function. An application can use
the SetParent function to set the
parent window of a pop-up,
overlapped, or child window.
org.eclipse.swt.widgets.Controlhas a handle property which is the hWnd i.e., this control’s unique identification ID
Window1
Window 2
Child Window 1
Window 3

Interprocess communication
File system IPC
Message-based IPC
Procedure call IPC
Shared memory IPC
Integrating Win32 Applications (contd.)
Integrating: This involves the win32 app to
Responds to Eclipse’s menu actions
Responds to resizing, minimizing, closing
Is capable to firing events to other Eclipse views
Process2
Process1

Example: Progress OpenEdgeAppBuilder
IDE API
showView
hideView
deleteView
getViewHwnd
setChildWindow
addWindow
setViewTitle
Inter process communication
Socket Communication
Eclipse
IDE
Win32
Application
AppicationAPI
showView
hideView
deleteView
getViewHwnd
setChildWindow
addWindow
setViewTitle
Eclipse Framework (org.eclipse.swt.internal.win32)
setParent, getParent
setWindowPosition
showWindow
getWindow
bringWindowToTop
…

Example: Progress OpenEdgeAppBuilder (contd.)

AppBuilder
showView
hideView
deleteView
getViewHwnd
setEmbeddedWindow
addWindow
setViewTitle
isIDERunning
IDE_Command
IDE
showView
hideView
deleteView
getViewHwnd
setEmbeddedWindow
addWindow
setViewTitle
AppBuilder
IDE
PVM
Eclipse Framework
TCP/IP
Eclipse Framework
showView
hideView
setPartName
PVM
SESSION:IDE-DEFAULT-PARENT-HWND
hWindow:IDE-PARENT-HWND
hWindow:IDE-WINDOW-TYPE

AppBuilder
IDE
Open File
Open File
openLinkedEditor
openABFile
File Changes
syncFromAB
Editor gets Focus
File Changes
Editor loses Focus
syncFromIDE
Save File
syncFromAB
Save File
saveLinkedEditor
syncFromAB
Close File
unlinkEditor
Close Editor
closeABFile

Example: DOTNET Designer & controls
Inter process communication
Socket Communication
Eclipse IDE
IPC
Editor
CLR
Common Language Runtime
Java runtime
Prowin32
runtime
Designer

Example: DOTNET Designer & controls (contd.)

Agenda…
Web apps
Win32 apps
Swing apps

Swing – Need for integration
Technology convergence - Eclipse platform as IDE
Eclipse is SWT based (Editors, Views etc)
Swing and SWT are parallel technologies
2 Options
Convert Swing code to SWT
Tedious and Costly migration
Increases development and testing effort
Integrate Swing with SWT – “Swing-SWT Bridge”
Swing component dwells in SWT containers
Write only bridge code
Most preferred option

Swing - Eclipse Integration points
Editor/View integration
Embed the main panel of Swing inside a composite.
Trap and delegate Key binding actions
Outline/Properties View integration
Listen for selection - Update Swing/SWT
Problems View Integration
Validation markers
Double click on problem - select Swing control

Swing - Eclipse Integration points (contd.)
Toolbar/menu actions
Placeholder for Swing Editor specific actions.
Preferences
Migrate the app preferences to eclipse preferences
Project level preferences as relevant
Reverse integration – Swing to Eclipse
Drive eclipse code from swing actions (For ex: new File wizard)
Modal Swing dialogs

Swing - Eclipse Integration points (contd.)
Use effective code-bridge mechanisms
Wrap and Delegate to Swing code/actions.
Clean separation between SWT and Swing code.
Interface dependencies

SWT/AWT Bridge
SWT/AWT bridge (Eclipse plugin) – part of SWT
Embedding Swing application made easy.
has API for creation of Swing Frame from SWT composite.
Embeds the Swing frame in to the Bridge

Swing App

Example - Integrated Swing App in Eclipse Editor
Existing Swing based graphical editors have been integrated tightly into Eclipse views.

UI Threads –
SWT & Swing have there own UI threads.
Prevent/Pre-empt Deadlocks.
Look and Feel –
SWT has native look and feel.
Swing look and feel has to be configured.
Modal dialogs of SWT & Swing are independent
Tab traversal, popup menus etc., have to be handled
Clubbing various Swing entities in to one eclipse
Issues

Solutions
Issues can be addressed as per their merit.
For instance when Swing opens a model dialog it can block SWT
SWT code should be written in such a way to delegate the events to the frame composite too

Summary
Integrated environment – Good for the user
Its possible to integrate External products built on foreign technologies inside Eclipse
Things to take care
Optimal technique to communicate between different environments
Try to make full use of Eclipse offered usability

References
http://web.progress.com/en/actional/actional-diagnostics.html
http://web.progress.com/en/downloads.html
http://www.eclipse.org/articles/article.php?file=Article-Swing-SWT-Integration/index.html

Integrating external products into eclipse

by Girish Balre on May 12, 2011

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Integrating external products into eclipse — Presentation Transcript