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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 – using Images in JFace


The TimeZoneLabelProvider can return an SWT Image. Although they can be loaded dynamically as in the previous chapter, JFace provides a number of resource registries that can be used to manage a set of resources for the application. Standard registries include the ImageRegistry, FontRegistry, and ColorRegistry classes. The purpose of a resource registry is to maintain a list of Resource instances and ensure that they are correctly disposed when they are no longer needed.

JFace has a set of these global registries; but there are specific ones, for example, those used by the IDE to maintain folder and file type icons. These use resource descriptors as a lightweight handle for the resource, and a means to acquire an instance of the resource based on that descriptor. The returned resource is owned by the registry, and as such, should not be disposed by clients that acquire or use them.

Standard images can be acquired by injecting an ISharedImages instance...

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