82 lines
2.1 KiB
CoffeeScript
82 lines
2.1 KiB
CoffeeScript
Travis.LimitedArray = Em.ArrayProxy.extend
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limit: 10
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isLoadedBinding: 'content.isLoaded'
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insertAtTheBeginning: true
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init: ->
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@_super.apply this, arguments
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arrangedContent: (->
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content = @get('content')
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if @get('disabled')
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content
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else if content
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content.slice(0, @get('limit'))
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).property('content', 'limit', 'disabled')
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totalLength: (->
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@get('content.length')
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).property('content.length')
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leftLength: (->
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totalLength = @get('totalLength')
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limit = @get('limit')
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if totalLength > limit
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totalLength - limit
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else
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0
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).property('totalLength', 'limit')
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isMore: (->
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!@get('disabled') && @get('leftLength') > 0
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).property('leftLength')
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showAll: ->
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@set 'limit', 1000000000
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@set 'disabled', true
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contentArrayWillChange: (array, index, removedCount, addedCount) ->
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@_super.apply this, arguments
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return if @get('disabled')
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if removedCount
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arrangedContent = @get 'arrangedContent'
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removedObjects = array.slice(index, index + removedCount);
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arrangedContent.removeObjects(removedObjects)
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contentArrayDidChange: (array, index, removedCount, addedCount) ->
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@_super.apply this, arguments
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return if @get('disabled')
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if addedCount
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arrangedContent = @get('arrangedContent')
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addedObjects = array.slice(index, index + addedCount)
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for object in addedObjects
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if @get 'insertAtTheBeginning'
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arrangedContent.unshiftObject(object)
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else
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arrangedContent.pushObject(object)
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@balanceArray()
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balanceArray: ->
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limit = @get 'limit'
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arrangedContent = @get 'arrangedContent'
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length = arrangedContent.get 'length'
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content = @get 'content'
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if length > limit
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arrangedContent.replace(limit, length - limit)
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else if length < limit && content.get('length') > length
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count = limit - length
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while count > 0
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if next = content.find( (object) -> !arrangedContent.contains(object) )
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if @get('insertAtTheBeginning')
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arrangedContent.unshiftObject(next)
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else
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arrangedContent.pushObject(next)
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count -= 1
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