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Make comment more succinct

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Signed-off-by: Nathan Sobo <nathan@github.com>
This commit is contained in:
Antonio Scandurra
2017-10-05 18:54:26 +02:00
committed by Nathan Sobo
parent ec14125ecb
commit f640e9339d
1 changed files with 2 additions and 10 deletions
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12
src/text-editor-component.js
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@@ -2890,16 +2890,8 @@ class TextEditorComponent {
const renderedEndRow = renderedStartRow + (this.getVisibleTileCount() * this.getRowsPerTile())
this.props.model.displayLayer.populateSpatialIndexIfNeeded(Infinity, renderedEndRow)
// It is possible for the approximate screen line count to exceed the actual
// number of lines. This may happen if there are many soft-wraps and the
// display layer hasn't indexed the entire contents of the buffer. In that
// circumstance, if a user attempts to scroll to a position that does not
// exist, we are unable to clip it correctly in `setScrollTop` because the
// line count approximation is also wrong. Therefore, after populating the
// spatial index, we will make sure that the approximate screen line count
// did not change. If it did, we need to clear the derived dimensions cache
// (which contains, for example, the rendered row range) because it could
// contain incorrect values.
// If the approximate screen line count changes, previously-cached derived
// dimensions could now be out of date.
if (model.getApproximateScreenLineCount() !== previousScreenLineCount) {
this.derivedDimensionsCache = {}
}