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127 lines
4.3 KiB
CoffeeScript
127 lines
4.3 KiB
CoffeeScript
CocoView = require 'views/core/CocoView'
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template = require 'templates/editor/delta'
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deltasLib = require 'core/deltas'
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require 'vendor/diffview'
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require 'vendor/difflib'
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require 'vendor/treema'
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TEXTDIFF_OPTIONS =
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baseTextName: "Old"
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newTextName: "New"
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contextSize: 5
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viewType: 1
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module.exports = class DeltaView extends CocoView
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###
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Takes a CocoModel instance (model) and displays changes since the
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last save (attributes vs _revertAttributes).
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* If headModel is included, will look for and display conflicts with the changes in model.
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* If comparisonModel is included, will show deltas between model and comparisonModel instead
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of changes within model itself.
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###
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@deltaCounter: 0
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className: 'delta-view'
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template: template
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constructor: (options) ->
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super(options)
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@expandedDeltas = []
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@skipPaths = options.skipPaths
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for modelName in ['model', 'headModel', 'comparisonModel']
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@[modelName] = options[modelName]
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continue unless @[modelName] and options.loadModels
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if not @[modelName].isLoaded
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@[modelName] = @supermodel.loadModel(@[modelName], 'document').model
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@buildDeltas() if @supermodel.finished()
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onLoaded: ->
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@buildDeltas()
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super()
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buildDeltas: ->
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if @comparisonModel
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@expandedDeltas = @model.getExpandedDeltaWith(@comparisonModel)
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else
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@expandedDeltas = @model.getExpandedDelta()
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[@expandedDeltas, @skippedDeltas] = @filterDeltas(@expandedDeltas)
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if @headModel
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@headDeltas = @headModel.getExpandedDelta()
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@headDeltas = @filterDeltas(@headDeltas)[0]
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@conflicts = deltasLib.getConflicts(@headDeltas, @expandedDeltas)
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filterDeltas: (deltas) ->
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return [deltas, []] unless @skipPaths
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for path, i in @skipPaths
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@skipPaths[i] = [path] if _.isString(path)
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newDeltas = []
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skippedDeltas = []
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for delta in deltas
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skip = false
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for skipPath in @skipPaths
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if _.isEqual _.first(delta.dataPath, skipPath.length), skipPath
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skip = true
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break
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if skip then skippedDeltas.push delta else newDeltas.push delta
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[newDeltas, skippedDeltas]
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getRenderData: ->
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c = super()
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c.deltas = @expandedDeltas
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c.counter = DeltaView.deltaCounter
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DeltaView.deltaCounter += @expandedDeltas.length
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c
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afterRender: ->
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deltas = @$el.find('.details')
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for delta, i in deltas
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deltaEl = $(delta)
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deltaData = @expandedDeltas[i]
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@expandDetails(deltaEl, deltaData)
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conflictDeltas = @$el.find('.conflict-details')
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conflicts = (delta.conflict for delta in @expandedDeltas when delta.conflict)
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for delta, i in conflictDeltas
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deltaEl = $(delta)
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deltaData = conflicts[i]
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@expandDetails(deltaEl, deltaData)
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expandDetails: (deltaEl, deltaData) ->
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treemaOptions = { schema: deltaData.schema or {}, readOnly: true }
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if _.isObject(deltaData.left) and leftEl = deltaEl.find('.old-value')
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options = _.defaults {data: _.merge({}, deltaData.left)}, treemaOptions
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try
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TreemaNode.make(leftEl, options).build()
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catch error
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console.error "Couldn't show left details Treema for", deltaData.left, treemaOptions
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if _.isObject(deltaData.right) and rightEl = deltaEl.find('.new-value')
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options = _.defaults {data: _.merge({}, deltaData.right)}, treemaOptions
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try
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TreemaNode.make(rightEl, options).build()
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catch error
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console.error "Couldn't show right details Treema for", deltaData.right, treemaOptions
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if deltaData.action is 'text-diff'
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return console.error "Couldn't show diff for left: #{deltaData.left}, right: #{deltaData.right} of delta:", deltaData unless deltaData.left? and deltaData.right?
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left = difflib.stringAsLines deltaData.left
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right = difflib.stringAsLines deltaData.right
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sm = new difflib.SequenceMatcher(left, right)
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opcodes = sm.get_opcodes()
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el = deltaEl.find('.text-diff')
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options = {baseTextLines: left, newTextLines: right, opcodes: opcodes}
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args = _.defaults options, TEXTDIFF_OPTIONS
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el.append(diffview.buildView(args))
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getApplicableDelta: ->
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delta = @model.getDelta()
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delta = deltasLib.pruneConflictsFromDelta delta, @conflicts if @conflicts
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delta = deltasLib.pruneExpandedDeltasFromDelta delta, @skippedDeltas if @skippedDeltas
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delta
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