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Eclipse Plug-in Development Beginner's Guide

You're reading from   Eclipse Plug-in Development Beginner's Guide Extend and customize Eclipse

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Product type Paperback
Published in Aug 2016
Publisher
ISBN-13 9781783980697
Length 458 pages
Edition 2nd Edition
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Author (1):
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Alex Blewitt Alex Blewitt
Author Profile Icon Alex Blewitt
Alex Blewitt
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Table of Contents (17) Chapters Close

Preface 1. Creating Your First Plug-in 2. Creating Views with SWT FREE CHAPTER 3. Creating JFace Viewers 4. Interacting with the User 5. Working with Preferences 6. Working with Resources 7. Creating Eclipse 4 Applications 8. Migrating to Eclipse 4.x 9. Styling Eclipse 4 Applications 10. Creating Features, Update Sites, Applications, and Products 11. Automated Testing of Plug-ins 12. Automated Builds with Tycho 13. Contributing to Eclipse A. Using OSGi Services to Dynamically Wire Applications B. Pop Quiz Answers Index

Time for action – upgrading the actions

The JFace Action class is used in pop-up menus using the Eclipse 2.x model, but in Eclipse 3.x and Eclipse 4.x, the separation between handlers (code that does the work) and commands (logical operations such as copy that may be processed by different handlers) allows for a more flexible system, as described in Chapter 4, Interacting with the User. The first step is to replace the actions with handlers.

  1. Open the SampleView class and go to the makeActions method, which creates anonymous inner subclasses of Action with an associated run method. To convert these, they will need to be static inner classes, so highlight the first new Action expression and navigate to the Refactor | Convert Anonymous Class to Nested… menu.
  2. In the Convert Anonymous Class to Nested dialog that appears, ensure that public and static are selected, and give it the name HandlerOne:
    Time for action – upgrading the actions
  3. Do the same steps for the other two actions, calling them HandlerTwo and DoubleClick...
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