* Moved Slate.h into SlateBasics.h and began shifting less commonly used headers into SlateExtras.h.
* Slate.h now simply includes SlateBasics.h and SlateExtras.h.
* Slate.h includes a deprecated warning now to indicate that SlateBasics.h + specific includes should be used instead.
* Moved dozens of inlined functions using Slate widgets into .cpp files to avoid header dependencies.
* All code samples now include SlateBasics.h and SlateExtras.h so future shifts will not break most those projects, but not trigger the deprecation warning of including Slate.h.
#BUN
[CL 2329610 by Wes Hunt in Main branch]
- On Mac OS X we hide the per-window menu bar.
- MultiBlocks have a type so that the Mac-specific menu creation code can generate the proper native widget.
- The menu builder can now be asked for the constructed MultiBox so that on menu creation it can be set on the TabManager.
- That allows the TabManager to be told to update the current global menu bar when the tab or window focus changes.
- A window activation delegate has been added to SWindow to permit this.
- Widgets that used to live in the LevelEditor menu bar have been hoisted into the window titlebar on OS X as on that platform there's no menu bar anymore.
- There's limited support for parsing custom widgets in the menu MultiBlock in order to support the platform list in the File->Package... sub-menu, this is sufficient for now but is quite fragile.
- We can support custom Slate widgets inside native Mac menus should we ever need to - but it is tricky.
reviewedby michael.trepka, nick.atamas
[CL 2228398 by Mark Satterthwaite in Main branch]
