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Re-arrange reference lines and labels files
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
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| import UIKit | ||
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| internal class LabelPool { | ||
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| var labels = [UILabel]() | ||
| var relations = [Int : Int]() | ||
| var unused = [Int]() | ||
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| func deactivateLabel(forPointIndex pointIndex: Int){ | ||
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| if let unusedLabelIndex = relations[pointIndex] { | ||
| unused.append(unusedLabelIndex) | ||
| } | ||
| relations[pointIndex] = nil | ||
| } | ||
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| @discardableResult | ||
| func activateLabel(forPointIndex pointIndex: Int) -> UILabel { | ||
| var label: UILabel | ||
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| if(unused.count >= 1) { | ||
| let unusedLabelIndex = unused.first! | ||
| unused.removeFirst() | ||
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| label = labels[unusedLabelIndex] | ||
| relations[pointIndex] = unusedLabelIndex | ||
| } | ||
| else { | ||
| label = UILabel() | ||
| labels.append(label) | ||
| let newLabelIndex = labels.index(of: label)! | ||
| relations[pointIndex] = newLabelIndex | ||
| } | ||
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| return label | ||
| } | ||
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| var activeLabels: [UILabel] { | ||
| get { | ||
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| var currentlyActive = [UILabel]() | ||
| let numberOfLabels = labels.count | ||
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| for i in 0 ..< numberOfLabels { | ||
| if(!unused.contains(i)) { | ||
| currentlyActive.append(labels[i]) | ||
| } | ||
| } | ||
| return currentlyActive | ||
| } | ||
| } | ||
| } |
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