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Focusable objects have ::focus and ::blur methods and a ::focused property. Focusable objects can be assigned a ::focusContext, and the ::focused property will only be true for at most one object with the same context.
37 lines
1.1 KiB
CoffeeScript
37 lines
1.1 KiB
CoffeeScript
{Model} = require 'theorist'
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Focusable = require '../src/focusable'
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FocusContext = require '../src/focus-context'
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describe "Focusable mixin", ->
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it "ensures that only a single model is focused for a given focus manager", ->
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class Item extends Model
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Focusable.includeInto(this)
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focusContext = new FocusContext
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item1 = new Item({focusContext})
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item2 = new Item({focusContext})
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item3 = new Item({focusContext})
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expect(focusContext.focusedObject).toBe null
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expect(item1.focused).toBe false
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expect(item2.focused).toBe false
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expect(item3.focused).toBe false
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item1.focus()
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expect(focusContext.focusedObject).toBe item1
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expect(item1.focused).toBe true
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expect(item2.focused).toBe false
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expect(item3.focused).toBe false
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item2.focus()
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expect(focusContext.focusedObject).toBe item2
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expect(item1.focused).toBe false
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expect(item2.focused).toBe true
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expect(item3.focused).toBe false
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item2.blur()
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expect(focusContext.focusedObject).toBe null
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expect(item1.focused).toBe false
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expect(item2.focused).toBe false
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expect(item3.focused).toBe false
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