If the text is empty, the IME may call deleteSurroundingText(1, 0) if the user
hits the delete key. The selection should remain at position 0 if this
happens.
Add type annotations in many places.
Fix some identifiers to have more lint-satisfying names.
Make all operator==s consistent in style.
Reorder some functions for consistency.
Make ParentData no longer dynamic, and fix all the code around that.
This updates to mojo 4e4d51ce28a and mojo sdk 711a0bcfb141b4 and updates the sky
package's pubspec.yaml dependency to '>=0.1.0 <0.2.0' to be compatible with
the current mojo package. This includes an update to the Mojo Dart generator to
produce real classes for enums and the corresponding updates for users of the
KeyboardType enum in Sky as well as one scoped_ptr->std::unique_ptr in shell
corresponding to a change in the Mojo EDK.
When a new version of the sky and sky_services package are pushed this will fix
domokit/mojo#440.
Previously EditableText would render a text widget with no cursor if the text
value was empty.
Also adjust the height of the cursor widget to reflect the style's line
height, and update the cursor painting to match.
This will ensure that the width of an empty Input is consistent with the
width of an Input that contains text.
Also add a unit test for the Input widget and a way for tests to provide mock
implementations of Mojo services such as the keyboard.
