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Now, if activity in the form view causes a value change in the movie model, the movie setter initiates the call sequence illustrated in the following diagram:
A movie model The movie observer The form view
setScript
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*-----------------------*
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v
update
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getScript <---------------*
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*---------------------------> setValue1
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getActing <---------------*
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*---------------------------> setValue2
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getDirection <------------*
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*---------------------------> setValue3