typical navigation event:
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- I as a user click on something to indicate I want to do something to some instance of something
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- UI request event
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-- instance (model/datasource)
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-- type of request (mode)
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- call the Editor View Component
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- set the style and content of title bar
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- set the list of items for the tabs bar (including mods for context)
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- fetch the relevant content component
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-- create
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-- preview
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-- edit