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ScaleProviderBuilder.kt
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ScaleProviderBuilder.kt
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/*
* Copyright (c) 2019. JetBrains s.r.o.
* Use of this source code is governed by the MIT license that can be found in the LICENSE file.
*/
package jetbrains.datalore.plot.builder.scale
import jetbrains.datalore.base.gcommon.collect.ClosedRange
import jetbrains.datalore.base.stringFormat.StringFormat
import jetbrains.datalore.plot.base.Aes
import jetbrains.datalore.plot.base.ContinuousTransform
import jetbrains.datalore.plot.base.DataFrame
import jetbrains.datalore.plot.base.Scale
import jetbrains.datalore.plot.base.scale.BreaksGenerator
import jetbrains.datalore.plot.base.scale.Scales
import jetbrains.datalore.plot.base.scale.transform.Transforms
import jetbrains.datalore.plot.common.data.SeriesUtil.ensureApplicableRange
class ScaleProviderBuilder<T>(private val aes: Aes<T>) {
private var _mapperProvider: MapperProvider<T>? = null
private var myName: String? = null
private var myBreaks: List<Any>? = null
private var myLabels: List<String>? = null
private var myLabelFormat: String? = null
private var myMultiplicativeExpand: Double? = null
private var myAdditiveExpand: Double? = null
private var myLimits: List<Any?>? = null
private var myContinuousTransform: ContinuousTransform = Transforms.IDENTITY
private var myBreaksGenerator: BreaksGenerator? = null
private var myDiscreteDomain = false
private var myDiscreteDomainReverse = false
var mapperProvider: MapperProvider<T>
get() {
if (_mapperProvider == null) {
_mapperProvider = DefaultMapperProvider[aes]
}
return _mapperProvider ?: throw AssertionError("Set to null by another thread")
}
set(p: MapperProvider<T>) {
_mapperProvider = p
}
fun mapperProvider(mapperProvider: MapperProvider<T>): ScaleProviderBuilder<T> {
this.mapperProvider = mapperProvider
return this
}
fun name(name: String): ScaleProviderBuilder<T> {
myName = name
return this
}
fun breaks(breaks: List<Any>): ScaleProviderBuilder<T> {
myBreaks = breaks
return this
}
@Suppress("FunctionName")
fun minorBreaks_NI(
@Suppress("UNUSED_PARAMETER") minorBreaks: List<Double>
): ScaleProviderBuilder<T> {
// continuous scale
throw IllegalStateException("Not implemented")
}
fun labels(labels: List<String>): ScaleProviderBuilder<T> {
myLabels = ArrayList(labels)
return this
}
fun labelFormat(format: String?): ScaleProviderBuilder<T> {
myLabelFormat = format
return this
}
fun multiplicativeExpand(v: Double): ScaleProviderBuilder<T> {
myMultiplicativeExpand = v
return this
}
fun additiveExpand(v: Double): ScaleProviderBuilder<T> {
myAdditiveExpand = v
return this
}
fun limits(v: List<*>): ScaleProviderBuilder<T> {
// Limits for continuous scale : list(min, max)
// Limits for discrete scale : list ("a", "b", "c")
myLimits = v
return this
}
@Suppress("FunctionName")
fun rescaler_NI(
@Suppress("UNUSED_PARAMETER") v: Any
): ScaleProviderBuilder<T> {
throw IllegalStateException("Not implemented")
}
@Suppress("FunctionName")
fun oob_NI(
@Suppress("UNUSED_PARAMETER") v: Any
): ScaleProviderBuilder<T> {
throw IllegalStateException("Not implemented")
}
fun continuousTransform(v: ContinuousTransform): ScaleProviderBuilder<T> {
myContinuousTransform = v
return this
}
fun breaksGenerator(v: BreaksGenerator): ScaleProviderBuilder<T> {
myBreaksGenerator = v
return this
}
@Suppress("FunctionName")
fun guide_NI(
@Suppress("UNUSED_PARAMETER") v: Any
): ScaleProviderBuilder<T> {
// Name of guide object, or object itself.
throw IllegalStateException("Not implemented")
}
fun discreteDomain(b: Boolean): ScaleProviderBuilder<T> {
myDiscreteDomain = b
return this
}
fun discreteDomainReverse(b: Boolean): ScaleProviderBuilder<T> {
myDiscreteDomainReverse = b
return this
}
fun build(): ScaleProvider<T> {
return MyScaleProvider(this)
}
private class MyScaleProvider<T>(b: ScaleProviderBuilder<T>) : ScaleProvider<T> {
private val myName: String? = b.myName
private val myLabels: List<String>? = b.myLabels?.let { ArrayList(it) }
private val myLabelFormat: String? = b.myLabelFormat
private val myMultiplicativeExpand: Double? = b.myMultiplicativeExpand
private val myAdditiveExpand: Double? = b.myAdditiveExpand
private val discreteDomainReverse: Boolean = b.myDiscreteDomainReverse
private val myBreaksGenerator: BreaksGenerator? = b.myBreaksGenerator
private val myAes: Aes<T> = b.aes
override val discreteDomain: Boolean = b.myDiscreteDomain
override val mapperProvider: MapperProvider<T> = b.mapperProvider
override val breaks: List<Any>? = b.myBreaks?.let { ArrayList(it) }
override val limits: List<Any?>? = b.myLimits?.let { ArrayList(it) }
override val continuousTransform: ContinuousTransform = b.myContinuousTransform
private fun scaleName(variable: DataFrame.Variable): String {
return myName ?: variable.label
}
override fun createScale(defaultName: String, discreteDomain: Collection<*>): Scale<T> {
val name = myName ?: defaultName
var scale: Scale<T>
// discrete domain
var domainValues = discreteDomain.filterNotNull()
val mapper = if (discreteDomain.isEmpty()) {
absentMapper(defaultName)
} else {
mapperProvider.createDiscreteMapper(domainValues)::apply
}
if (discreteDomainReverse) {
domainValues = domainValues.reversed()
}
scale = Scales.discreteDomain(
name,
domainValues,
mapper
)
val discreteLimits = limits?.filterNotNull()?.let {
if (discreteDomainReverse) {
it.reversed()
} else {
it
}
}
if (discreteLimits != null) {
scale = scale.with()
.limits(discreteLimits)
.build()
}
return completeScale(scale)
}
override fun createScale(defaultName: String, continuousDomain: ClosedRange<Double>): Scale<T> {
val name = myName ?: defaultName
var scale: Scale<T>
// continuous (numeric) domain
val dataRange = ensureApplicableRange(continuousDomain)
var lowerLimit: Double? = null
var upperLimit: Double? = null
if (limits != null) {
var lower = true
for (limit in limits) {
if (limit is Number) {
val v = limit.toDouble()
if (v.isFinite()) {
if (lower) {
lowerLimit = v
} else {
upperLimit = v
}
}
}
lower = false
}
}
val mapper = mapperProvider.createContinuousMapper(
dataRange,
lowerLimit,
upperLimit,
continuousTransform
)
val continuousRange = mapper.isContinuous || myAes.isNumeric
scale = Scales.continuousDomain(name, { v -> mapper.apply(v) }, continuousRange)
// ToDo: need to 'inverse transform' breaks.
if (mapper is WithGuideBreaks<*>) {
@Suppress("UNCHECKED_CAST")
mapper as WithGuideBreaks<Any>
scale = scale.with()
.breaks(mapper.breaks)
.labelFormatter(mapper.formatter)
.build()
}
scale = scale.with()
.continuousTransform(continuousTransform)
.build()
if (myBreaksGenerator != null) {
scale = scale.with()
.breaksGenerator(myBreaksGenerator)
.build()
}
if (limits != null) {
val with = scale.with()
if (lowerLimit != null) {
with.lowerLimit(lowerLimit)
}
if (upperLimit != null) {
with.upperLimit(upperLimit)
}
scale = with.build()
}
return completeScale(scale)
}
private fun completeScale(scale: Scale<T>): Scale<T> {
val with = scale.with()
if (breaks != null) {
with.breaks(breaks)
}
if (myLabels != null) {
with.labels(myLabels)
}
if (myLabelFormat != null) {
with.labelFormatter(StringFormat.create(myLabelFormat)::format)
}
if (myMultiplicativeExpand != null) {
with.multiplicativeExpand(myMultiplicativeExpand)
}
if (myAdditiveExpand != null) {
with.additiveExpand(myAdditiveExpand)
}
return with.build()
}
private fun absentMapper(`var`: DataFrame.Variable): (Double?) -> T {
// mapper for empty data is a special case - should never be used
return { v -> throw IllegalStateException("Mapper for empty data series '" + `var`.name + "' was invoked with arg " + v) }
}
private fun absentMapper(label: String): (Double?) -> T {
// mapper for empty data is a special case - should never be used
return { v -> throw IllegalStateException("Mapper for empty data series '$label' was invoked with arg " + v) }
}
}
}