Bug 354190

Description Ben Roling 2011-08-08 17:25:15 EDT

Build Identifier: M20110804-1800

In testing of upgrading an existing RCP application from Eclipse 3.6 to 4.1, I encountered a dynamic menu that is always displaying only the first menu item.  I didn't write the code for this menu myself so I can't explain exactly why it was written the way it was, but when looking I see that the class providing the contribution extends ContributionItem rather than CompoundContributionItem as suggested on the wiki [1].  I don't know if there is anything inherently wrong with the original code that explains why it doesn't work in 4.1, but it works fine in 3.7.

Out of curiosity, I tried modifying the code to extend CompoundContributionItem instead and then the menu worked fine in 4.1 so that is a workaround.

I will be attaching snippets that demonstrate how to add a dynamic menu to the RCP mail demo app that demonstrates how the dynamic menu works in 3.7 but does not work in 4.1.

I originally discovered the issue with I20110620-1631, but later also tested M20110804-1800 to see if it might have a fix and it did not.

I searched to try to find an existing bug report for this issue but did not find one.  My apologies if this has already been reported.

[1] http://wiki.eclipse.org/Menu_Contributions/Populating_a_dynamic_submenu

Reproducible: Always

Steps to Reproduce:
1. Create a new RCP mail demo app project
2. Use the attached plugin.xml snippet to add a dynamic menu
3. Use the attached DynamicMenu class to provide the dynamic menu contribution referenced in the plugin.xml
4. Run the mail demo application against a 3.7 target platform and view the dynamic menu.  It will display 3 items ("a","b","c").
5. Run the mail demo application against a 4.1 target platform and view the dynamic menu.  Only item "a" will display.