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This commit is contained in:
Kevin Sawicki & Nathan Sobo
2013-02-26 15:08:33 -08:00
parent 42fe87a9a2
commit d6d6ff8cca
1 changed files with 6 additions and 4 deletions
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10
src/app/display-buffer-marker.coffee
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@@ -87,7 +87,9 @@ class DisplayBufferMarker
notifyObservers: ({oldHeadBufferPosition, oldTailBufferPosition, bufferChanged, valid} = {}) ->
oldHeadScreenPosition = @getHeadScreenPosition()
newHeadScreenPosition = oldHeadScreenPosition
oldTailScreenPosition = @getTailScreenPosition()
newTailScreenPosition = oldTailScreenPosition
valid ?= true
if valid
@@ -95,11 +97,11 @@ class DisplayBufferMarker
newHeadScreenPosition = @getHeadScreenPosition()
@tailScreenPosition = null
newTailScreenPosition = @getTailScreenPosition()
else
newHeadScreenPosition = oldHeadScreenPosition
newTailScreenPosition = oldTailScreenPosition
return if valid is @valid and _.isEqual(newHeadScreenPosition, oldHeadScreenPosition) and _.isEqual(newTailScreenPosition, oldTailScreenPosition)
validChanged = valid isnt @valid
headScreenPositionChanged = not _.isEqual(newHeadScreenPosition, oldHeadScreenPosition)
tailScreenPositionChanged = not _.isEqual(newTailScreenPosition, oldTailScreenPosition)
return unless validChanged or headScreenPositionChanged or tailScreenPositionChanged
oldHeadBufferPosition ?= @getHeadBufferPosition()
newHeadBufferPosition = @getHeadBufferPosition() ? oldHeadBufferPosition