Bug 443089: Save Dialog doesn't handle files with multipart extensions

Reverted code changes made for Bug 347430.
Don't use setAllowedFileType to set the filter extensions to the
NSSavePanel as it doesn't support multi-part extensions such as tar.gz.
Used delegate method panel:userEnteredFilename:confirmed: to handle the
overwrite case when name field has filename without extension.

Cocoa APIs in general don't support multi-part extensions. However, SWT
FileDialog needs to support them. Hence, add the required extensions
manually on save and selection change.

Change-Id: I221f75476f1c1d263f64da239845c325b436bfca
6 files changed
tree: 567279c14274a4ba43504558955388260498d334
  1. .gitignore
  2. CONTRIBUTING
  3. LICENSE
  4. NOTICE
  5. README.md
  6. bundles/
  7. examples/
  8. features/
  9. local-build/
  10. pom.xml
  11. tests/
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