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{ViewModel, Input} = require './view-model'
module.exports =
class ExViewModel extends ViewModel
constructor: (@exCommand) ->
super(@exCommand, class: 'command')
@historyIndex = -1
atom.commands.add(@view.editorElement, 'core:move-up', @increaseHistoryEx)
atom.commands.add(@view.editorElement, 'core:move-down', @decreaseHistoryEx)
restoreHistory: (index) ->
@view.editorElement.getModel().setText(@history(index).value)
history: (index) ->
@exState.getExHistoryItem(index)
increaseHistoryEx: =>
if @history(@historyIndex + 1)?
@historyIndex += 1
@restoreHistory(@historyIndex)
decreaseHistoryEx: =>
if @historyIndex <= 0
# get us back to a clean slate
@historyIndex = -1
@view.editorElement.getModel().setText('')
else
@historyIndex -= 1
@restoreHistory(@historyIndex)
confirm: (view) =>
@value = @view.value
@exState.pushExHistory(@)
super(view)
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