Bug 571892 - [GTK] Clean up old/unused functions in ExpandBar and

- Removed expanded boolean, and rely on the GTK function
- Removed check for x != -1 && y != -1 when x & y are guaranteed to be 0
- Improved implementation of getHeaderHeight by retrieving the actual
label widget and getting it's allocated height rather case dependent
logic on the entire height of expander widget

Change-Id: I158dde2c270077ba4467a00ec7b9d9fbcd5f9d8b
Signed-off-by: Paul D'Pong <sdamrong@redhat.com>
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.swt/+/179449
Tested-by: Platform Bot <platform-bot@eclipse.org>
Reviewed-by: Alexander Kurtakov <akurtako@redhat.com>
5 files changed
tree: 5fd747d02bd309b12d0c39998ed79ee02d673a2c
  1. .gitignore
  5. README.md
  6. bundles/
  7. container/
  8. examples/
  9. features/
  10. local-build/
  11. pom.xml
  12. tests/

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