feat: toggle "read only" attribute to modify read only file or lock modification to file

[soumyamahunt]

This pr aims to implement modifying files with readonly attribute.

PR Type

What kind of change does this PR introduce?

• Feature

Other information

While Windows Notepad doesn't allow modifying files with readonly attribute, Notepad++ allows editing them once this flag is removed.

[soumyamahunt]

@Jasonstein Notepad++ doesn't allow editing readonly files by default, but after removing readonly flag it allows editing and user than can save the file. Should we implement this behavior?? Or, should we prompt user when trying to save a readonly file and if user accepts remove the readonly attribute??

[soumyamahunt]

@Jasonstein this is the behavior I have come up with for editing normal vs read-only files:

Normal	Read-Only

[0x7c13]

Two cents:

1. Display a lock icon right after the path indicator so it is more intuitive.
2. Whenever user changes any text or add/delete any text, show normal notification saying that "File is read-only!". Let user change the attribute of the file so we do not need to implement anything.

Btw, how could you import those win32 dlls? Will they work in production? What about future compatibility with Windows 10x?

[soumyamahunt]

1. Display a lock icon right after the path indicator so it is more intuitive.

Will do that.

2. Whenever user changes any text or add/delete any text, show normal notification saying that "File is read-only!". Let user change the attribute of the file so we do not need to implement anything.

Wouldn't displaying notification be too intrusive?? Currently I am showing the modified icon in the tab in grey/disabled color when file is read only.

Btw, how could you import those win32 dlls? Will they work in production? What about future compatibility with Windows 10x?

..FromApp methods are made with uwp security model so they will work in production and there won't be any future incompatibility.

[0x7c13]

1. Display a lock icon right after the path indicator so it is more intuitive.

Will do that.

1. Whenever user changes any text or add/delete any text, show normal notification saying that "File is read-only!". Let user change the attribute of the file so we do not need to implement anything.

Wouldn't displaying notification be too intrusive?? Currently I am showing the modified icon in the tab in grey/disabled color when file is read only.

Btw, how could you import those win32 dlls? Will they work in production? What about future compatibility with Windows 10x?

..FromApp methods are made with uwp security model so they will work in production and there won't be any future incompatibility.

What about the file that user dragged into notepads? (They are read-only to notepads but they do not have read-only attribute)

[soumyamahunt]

What about the file that user dragged into notepads? (They are read-only to notepads but they do not have read-only attribute)

They would work like normal files. None of the StorageFile annoyances apply to ..FromApp methods.

[soumyamahunt]

@Jasonstein I have modified the behavior as you said:

Normal	Read-Only