32 lines
811 B
Swift
32 lines
811 B
Swift
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//
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// NumberHertzToStringTransformer.swift
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// Cog
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//
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// Created by Christopher Snowhill on 6/29/22.
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//
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import Cocoa
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@objc(NumberHertzToStringTransformer)
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public final class NumberHertzToStringTransformer: ValueTransformer {
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fileprivate static var floatFormatter: NumberFormatter {
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let formatter = NumberFormatter()
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formatter.maximumFractionDigits = 2
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formatter.minimumFractionDigits = 0
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formatter.minimumIntegerDigits = 1
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formatter.roundingIncrement = 0.5
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formatter.usesGroupingSeparator = true
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formatter.groupingSeparator = ","
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formatter.groupingSize = 3
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return formatter
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}
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override public func transformedValue(_ value: Any?) -> Any? {
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if let value = value as? NSNumber {
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return "\(NumberHertzToStringTransformer.floatFormatter.string(from: value)!) Hz"
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}
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return nil
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}
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}
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