Some improvements

[for7raid]

Hello @anmcgrath !

Please take a look at this PR. Welcome to code review and feedback.

1. Added two new editors (textarea and typed enum)
2. Sheet object passed to renderer for more complex scenarios in custom renders
3. Data object is upped to IReadOnlyCell for the same purpose
4. fix errors when copy data with multiline and tabbed text
5. Added TextAlign property to Format object
6. Keyboard handling improved to handle not only English keyboard layout
7. F2 key begins edit like Excel
8. some simple refactoring
9. Examples are enriched
10. Fix null refrence exception while render unbounded cells
11. Added SetCellReadOnly method
12. Fix issue about render merged cells at firt render
13. Fix issue when mousemove event can't send message to server throw disposed dotnet object

[anmcgrath]

Hi @for7raid thank you for the contributions!

I only have two comments to make from these changes:

1. I'm not 100% sure whether we should include an Enum editor as a default component - Maybe it can be registered in the examples in addition to the number editor example that is already there?
2. I think the SetCellReadOnly function should be implemented as a command so that it can be undone/redone like a lot of the other sheet functions.

Thanks again!

[for7raid]

@anmcgrath Hi!

1. Why not? This is simple base component for very often cases, I do not register it as default, any developer can register it himself if needed, no need - no use :)
2. Ok, my bad, change it soon

thanks for reply!

[for7raid]

2. • done, modified to command

[anmcgrath]

Thanks @for7raid . Re point 1 - fair enough, happy to leave it in.

Thanks for adding the command for setting readonly and the associated test.