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Eclipse Plug-in Development Beginner's Guide - Second Edition

You're reading from  Eclipse Plug-in Development Beginner's Guide - Second Edition

Product type Book
Published in Aug 2016
Publisher
ISBN-13 9781783980697
Pages 458 pages
Edition 2nd Edition
Languages
Author (1):
Alex Blewitt Alex Blewitt
Profile icon Alex Blewitt

Table of Contents (24) Chapters

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 2. Creating Views with SWT 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 Using OSGi Services to Dynamically Wire Applications Pop Quiz Answers Index

Time for action: handling deletion


The incremental builder does not handle deletion in its current implementation. To handle deletion, the IResourceDelta instance needs to be inspected to find out what kind of delta took place and handle deleted resources accordingly.

  1. Run the target Eclipse instance, and delete a .minimark file. An exception is thrown and reported to the user:

  2. To fix this issue, modify the check in the MinimarkVisitor method processResource to see whether the resource exists or not:

    private void processResource(IResource resource) throws
     CoreException {
      if (resource instanceof IFile && resource.exists()) {
  3. This solves the NullPointerException, but the generated HTML file is left behind. If the .minimark file is deleted, and there is a corresponding .html file, that can be deleted as well. Modify the visit(IResourceDelta) method as follows:

    public boolean visit(IResourceDelta delta) throws CoreException {
      boolean deleted = (IResourceDelta.REMOVED & delta.getKind...
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