Adding ChangeEvent support to field changes.

google / blockly-android

Blockly for Android

Apache License 2.0

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Closed AnmAtAnm closed 7 years ago

AnmAtAnm commented 7 years ago

Also

Adding TestEventCallback, TestBlockObserver, and TestFieldObserver, implementations that each collect their respect events for testing replacing some prior implementations.
Fix issue with WorkspaceHelper.getView() in a headless mode.

This change is