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The emoji and colorizer text fields
have some minor differences in behavior.
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For example, in the emoji text field,
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if there's text,
it clears when editing begins.
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So it's not possible to edit existing
text after you switch to a different
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text field.
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Also, the return key in the emoji
text field doesn't hide the keyboard.
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The colorizer doesn't clear
text when editing begins.
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So it's possible to edit existing texts.
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And in the colorizer text field,
the return key does hide the keyboard.
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So, given what you know
about the two delegates and
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the protocol, which methods do you
think the two delegates implement?