Time for action – creating a migration component
by Dr. Alex Blewitt
Eclipse Plug-in Development Beginner's Guide - Second Edition
- Eclipse Plug-in Development Beginner's Guide Second Edition
- Table of Contents
- Eclipse Plug-in Development Beginner's Guide Second Edition
- Credits
- Foreword
- About the Author
- Acknowledgments
- About the Reviewers
- www.PacktPub.com
- Preface
- 1. Creating Your First Plug-in
- Getting started
- Time for action – setting up the Eclipse environment
- Time for action – creating a plug-in
- Time for action – launching Eclipse from within Eclipse
- Debugging a plug-in
- Time for action – debugging a plug-in
- Time for action – updating code in the debugger
- Time for action – setting up step filtering
- Time for action – breaking at method entry and exit
- Time for action – setting a conditional breakpoint
- Time for action – catching exceptions
- Time for action – inspecting and watching variables
- Summary
- 2. Creating Views with SWT
- Creating views and widgets
- Time for action – creating a view
- Time for action – drawing a custom view
- Time for action – drawing a seconds hand
- Time for action – animating the second hand
- Time for action – running on the UI thread
- Time for action – creating a reusable widget
- Time for action – using layouts
- Managing resources
- Time for action – getting colorful
- Time for action – finding the leak
- Time for action – plugging the leak
- Interacting with the user
- Time for action – getting in focus
- Time for action – responding to input
- Using other SWT widgets
- Time for action – adding items to the tray
- Time for action – responding to the user
- Time for action – modal and other effects
- Time for action – groups and tab folders
- Summary
- 3. Creating JFace Viewers
- Why JFace?
- Creating TreeViewers
- Time for action – creating a tree viewer
- Time for action – using Images in JFace
- Time for action – styling label providers
- Sorting and filtering
- Time for action – sorting items in a viewer
- Time for action – filtering items in a viewer
- Interaction
- Time for action – adding a double-click listener
- Tabular data
- Time for action – viewing time zones in tables
- Selection
- Time for action – propagating selection
- Time for action – responding to selection changes
- Summary
- 4. Interacting with the User
- Creating menus, commands, and handlers
- Time for action – installing the E4 tools
- Time for action – creating commands and handlers
- Time for action – binding commands to keys
- Time for action – changing contexts
- Time for action – enabling and disabling menus items
- Time for action – contributing commands to pop-up menus
- Jobs and progress
- Time for action – running operations in the background
- Time for action – reporting progress
- Time for action – dealing with cancellation
- Time for action – using subtasks and sub-progress monitors
- Time for action – using null progress monitors and sub monitors
- Time for action – setting job properties
- Reporting errors
- Time for action – showing errors
- Summary
- 5. Working with Preferences
- Eclipse Preferences
- Time for action – persisting a value
- Time for action – injecting preferences
- Time for action – injecting individual preferences
- Time for action – responding to preference changes
- Preference pages
- Time for action – creating a preference page
- Time for action – creating warning and error messages
- Time for action: choosing from a list
- Time for action – aligning field editors with a grid
- Time for action – placing the preferences page
- Time for action: using other field editors
- Time for action – searching for preferences
- Summary
- 6. Working with Resources
- Using the workspace and resources
- Time for action – creating an editor
- Time for action – writing the markup parser
- Time for action – building the builder
- Time for action – iterating through resources
- Time for action – creating resources
- Time for action – implementing incremental builds
- Time for action: handling deletion
- Using natures
- Time for action – creating a nature
- Using markers
- Time for action – error markers if file is empty
- Time for action – registering a marker type
- Summary
- 7. Creating Eclipse 4 Applications
- Time for action – installing E4 tooling
- Time for action – creating an E4 application
- Time for action – creating a part
- Using services and contexts
- Time for action – adding logging
- Time for action – getting the window
- Time for action – obtaining the selection
- Time for action – dealing with events
- Time for action – calculating values on demand
- Time for action – interacting with the UI
- Using commands, handlers, and menu items
- Time for action – wiring a menu to a command with a handler
- Time for action: passing command parameters
- Time for action – creating a direct menu and keybindings
- Time for action – creating a pop-up menu and a view menu
- Creating custom injectable classes
- Time for action – creating a simple service
- Time for action – injecting subtypes
- Summary
- 8. Migrating to Eclipse 4.x
- Why Eclipse 4.x?
- Time for action – creating a migration component
- Time for action – updating to e4view
- Time for action – upgrading the actions
- Time for action – creating toolbars
- Time for action – adding the view menu
- Time for action – adding the pop-up
- Migrating to Eclipse 4.x patterns
- Time for action – creating a model fragment
- Time for action – migrating the commands and handlers
- Time for action – creating the view menu
- Time for action – defining the pop-up view in the fragment
- Summary
- 9. Styling Eclipse 4 Applications
- Styling Eclipse with CSS
- Time for action – styling the UI with CSS
- Time for action – using custom CSS classes
- Using the Eclipse spies
- Time for action – using the CSS Spy
- Time for action – integrating the spy into a product
- Styling a custom widget
- Time for action – adding the clock
- Time for action – using a CSS property
- Time for action – going to the dark side
- Time for action – adding themes
- Time for action – switching between themes
- Summary
- 10. Creating Features, Update Sites, Applications, and Products
- Grouping plug-ins with features
- Time for action – creating a feature
- Time for action – exporting a feature
- Time for action – installing a feature
- Time for action – categorizing the update site
- Time for action – depending on other features
- Time for action – branding features
- Building applications and products
- Time for action – creating a headless application
- Time for action – creating a product
- Target platforms
- Time for action – creating a target definition
- Time for action – switching to a specific version
- Summary
- 11. Automated Testing of Plug-ins
- Using JUnit for automated testing
- Time for action – adding dependencies to the target platform
- Time for action – writing a simple JUnit 4 test case
- Time for action – writing a plug-in test
- Using SWTBot for user interface testing
- Time for action – writing an SWTBot test
- Time for action – working with menus
- Working with SWTBot
- Time for action – hiding the welcome screen
- Time for action – avoiding SWTBot runtime errors
- Working with views
- Time for action: showing views
- Time for action – interrogating views
- Interacting with the UI
- Time for action – getting values from the UI
- Time for action – waiting for a condition
- Summary
- 12. Automated Builds with Tycho
- Using Maven to build Eclipse plug-ins with Tycho
- Time for action – installing Maven
- Time for action – building with Tycho
- Building features and update sites with Tycho
- Time for action – creating a parent project
- Time for action – building a feature
- Time for action – building an update site
- Time for action – building a product
- Time for action – using the target platform
- Testing and releasing
- Time for action – running automated tests
- Time for action – changing the version numbers
- Signing update sites
- Time for action – creating a self-signed certificate
- Time for action – signing the plug-ins
- Time for action – serving an update site
- Summary
- 13. Contributing to Eclipse
- Open source contributions
- Time for action – installing the sources
- Time for action – debugging the platform
- Time for action – modifying the platform
- Time for action – checking out from EGit and Git
- Time for action – configuring the SWT project
- Contributing to Eclipse
- Time for action – creating an account at Eclipse
- Time for action – creating a bug
- Time for action – setting up a Gerrit profile
- Time for action – committing and pushing a patch
- Summary
- A. Using OSGi Services to Dynamically Wire Applications
- B. Pop Quiz Answers
- Chapter 1 – Creating Your First Plug-in
- Chapter 2 – Creating Views with SWT
- Chapter 3 – Creating JFace Viewers
- Chapter 4 – Interacting with the User
- Chapter 5 – Storing Preferences and Settings
- Chapter 6 – Working with Resources
- Chapter 7 – Creating Eclipse 4 Applications
- Chapter 8 – Migrating to Eclipse 4.x
- Chapter 9 – Styling Eclipse 4 Applications
- Chapter 10 – Creating Features, Update Sites, Applications, and Products
- Chapter 11 – Automated Testing of Plug-ins
- Chapter 12 – Automated Builds with Tycho
- Index
In order to demonstrate how to migrate a plug-in to Eclipse 4.x technology, a simple example needs to be created. For this purpose, the Eclipse plug-in example library will be used, although the exact sample used by this book can also be checked out from the book's GitHub repository at https://github.com/alblue/com.packtpub.e4/
- Create a new plug-in project by navigating to the File | New | Project… menu and choosing the Plug-in Project option. Use
com.packtpub.e4.migrationas the name of the project, click on Next, and then accept the defaults by clicking on Finish. - Open the
META-INF/MANIFEST.MFfile and go to the Overview tab. Click on the Extensions link on the right-hand side, under the Extension/Extension Point Content group:
- If a dialog Extension pages hidden is displayed, click on the Yes button to ensure that the Extensions tab is shown:
- Go to the Extensions tab and click on the Add... button. Type
viewsin the filter and uncheck the Show only extension points from the required plug-ins option to show the list. Select Sample View and click on Next:
- Click on the Finish button and accept the defaults to create the plug-in.
- Right-click on the project and choose Run As | Eclipse Application to launch the IDE. Navigate to the Window | Show View | Other… menu in the launched Eclipse instance and choose Sample Category | Sample View. A simple view should be shown:
In order to migrate an existing application, a sample plug-in needs to be used. The version of the extension point in Eclipse's built-in wizards currently uses the Eclipse 3.x APIs (these samples were taken from Eclipse Neon; the exact code used can be seen from the book's GitHub repository).
A sample view was created using the view extension point, showing a table viewer populated with sample data. The table viewer has a number of actions (which are an Eclipse 2.x technology), along with a view menu, a toolbar, and a context-sensitive pop-up menu. Subsequent sections will show how to refactor each of these in turn into their Eclipse 4.x equivalents.
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