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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
Languages
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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 – creating commands and handlers

Commands and handlers are common to both Eclipse 3.x and the Eclipse 4 model. In Eclipse 3.x, they are represented as extension points in the plugin.xml file under org.eclipse.ui.commands. In Eclipse 4, they are stored in the E4 fragment file.

A command will be created to represent saying "hello world," and a handler will be created to display the message. These will then be used to add a menu item to execute the operation.

  1. Open the fragment for the project, or double-click on the fragment.e4xmi file.

    Tip

    This should open a model editor; if it opens plain XML content, then verify that the E4 tools have been installed correctly.

  2. Select the Model Fragment Definition element and click on Add to create a new fragment. Fill in the fields as follows:
    1. Extended Element ID: org.eclipse.e4.legacy.ide.application (this can be found under the Container-Type: Application from the search field)
    2. Feature Name: commands
    Time for action – creating commands and handlers
  3. Select the newly created Model...
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