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Fix bug caused by the fact that 0 <= null ===> true. God. damn. it.

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This commit is contained in:
Nathan Sobo 2012-11-09 14:02:13 -07:00
parent ee9ae449f3
commit 538c44f82b
1 changed files with 4 additions and 6 deletions
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10
src/app/editor.coffee
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@ -747,9 +747,7 @@ class Editor extends View
@updateRenderedLines()
clearRenderedLines: ->
@lineCache = []
@renderedLines.find('.line').remove()
@renderedLines.empty()
@firstRenderedScreenRow = null
@lastRenderedScreenRow = null
@ -757,14 +755,14 @@ class Editor extends View
firstVisibleScreenRow = @getFirstVisibleScreenRow()
lastVisibleScreenRow = @getLastVisibleScreenRow()
if firstVisibleScreenRow >= @firstRenderedScreenRow and lastVisibleScreenRow <= @lastRenderedScreenRow
if @firstRenderedScreenRow? and firstVisibleScreenRow >= @firstRenderedScreenRow and lastVisibleScreenRow <= @lastRenderedScreenRow
renderFrom = @firstRenderedScreenRow
renderTo = Math.min(@getLastScreenRow(), @lastRenderedScreenRow)
else
renderFrom = Math.max(0, firstVisibleScreenRow - @lineOverdraw)
renderTo = Math.min(@getLastScreenRow(), lastVisibleScreenRow + @lineOverdraw)
if @pendingChanges.length == 0 and @firstRenderedScreenRow <= renderFrom and renderTo <= @lastRenderedScreenRow
if @pendingChanges.length == 0 and @firstRenderedScreenRow and @firstRenderedScreenRow <= renderFrom and renderTo <= @lastRenderedScreenRow
return
intactRanges = @computeIntactRanges()
@ -877,7 +875,7 @@ class Editor extends View
Math.floor(@scrollTop() / @lineHeight)
getLastVisibleScreenRow: ->
Math.ceil((@scrollTop() + @scrollView.height()) / @lineHeight) - 1
Math.max(0, Math.ceil((@scrollTop() + @scrollView.height()) / @lineHeight) - 1)
handleDisplayBufferChange: (e) ->
{ oldRange, newRange } = e