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/*
* Copyright (c) 2017-present Robert Jaros
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package pl.treksoft.kvision.form.check
import pl.treksoft.kvision.core.Container
import pl.treksoft.kvision.core.StringBoolPair
import pl.treksoft.kvision.core.StringPair
import pl.treksoft.kvision.form.FormInput
import pl.treksoft.kvision.form.InputSize
import pl.treksoft.kvision.form.ValidationStatus
import pl.treksoft.kvision.panel.SimplePanel
import pl.treksoft.kvision.state.ObservableState
/**
* The input component rendered as a group of HTML *input type="radio"* elements with the same name attribute.
*
* The radio group can be populated directly from *options* parameter or manually by adding
* [Radio] components to the container.
*
* @constructor
* @param options an optional list of options (label to value pairs) for the group
* @param value selected option
* @param name the name attribute of the generated HTML input element
* @param inline determines if the options are rendered inline
*/
@Suppress("TooManyFunctions")
open class RadioGroupInput(
options: List<StringPair>? = null, value: String? = null, name: String? = null, inline: Boolean = false
) : SimplePanel(setOf("form-group")), FormInput, ObservableState<String?> {
protected val observers = mutableListOf<(String?) -> Unit>()
/**
* A list of options (label to value pairs) for the group.
*/
var options by refreshOnUpdate(options) { setChildrenFromOptions() }
/**
* A value of the selected option.
*/
var value by refreshOnUpdate(value) { setValueToChildren(it); observers.forEach { ob -> ob(it) } }
/**
* Determines if the options are rendered inline.
*/
var inline by refreshOnUpdate(inline)
override var disabled
get() = getDisabledFromChildren()
set(value) {
setDisabledToChildren(value)
}
override var name
get() = getNameFromChildren()
set(value) {
setNameToChildren(value)
}
override var size
get() = getSizeFromChildren()
set(value) {
setSizeToChildren(value)
}
override var validationStatus
get() = getValidationStatusFromChildren()
set(value) {
setValidationStatusToChildren(value)
}
private val idc = "kv_form_radiogroup_$counter"
init {
setChildrenFromOptions()
setValueToChildren(value)
setNameToChildren(name)
counter++
}
override fun getSnClass(): List<StringBoolPair> {
val cl = super.getSnClass().toMutableList()
if (inline) {
cl.add("kv-radiogroup-inline" to true)
} else {
cl.add("kv-radiogroup" to true)
}
return cl
}
private fun setValueToChildren(value: String?) {
val radios = getChildren().filterIsInstance<Radio>()
radios.forEach { it.value = false }
radios.find {
it.extraValue == value
}?.value = true
}
private fun getDisabledFromChildren(): Boolean {
return getChildren().filterIsInstance<Radio>().firstOrNull()?.disabled ?: false
}
private fun setDisabledToChildren(disabled: Boolean) {
getChildren().filterIsInstance<Radio>().forEach { it.disabled = disabled }
}
private fun getNameFromChildren(): String? {
return getChildren().filterIsInstance<Radio>().firstOrNull()?.name ?: this.idc
}
private fun setNameToChildren(name: String?) {
val tname = name ?: this.idc
getChildren().filterIsInstance<Radio>().forEach { it.name = tname }
}
private fun getSizeFromChildren(): InputSize? {
return getChildren().filterIsInstance<Radio>().firstOrNull()?.size
}
private fun setSizeToChildren(size: InputSize?) {
getChildren().filterIsInstance<Radio>().forEach { it.size = size }
}
private fun getValidationStatusFromChildren(): ValidationStatus? {
return getChildren().filterIsInstance<Radio>().firstOrNull()?.validationStatus
}
private fun setValidationStatusToChildren(validationStatus: ValidationStatus?) {
getChildren().filterIsInstance<Radio>().forEach { it.validationStatus = validationStatus }
}
private fun setChildrenFromOptions() {
val currentName = this.name
super.removeAll()
options?.let {
val tname = currentName ?: this.idc
val tinline = this.inline
val c = it.map {
Radio(false, extraValue = it.first, label = it.second).apply {
inline = tinline
name = tname
eventTarget = this@RadioGroupInput
setEventListener<Radio> {
change = {
this@RadioGroupInput.value = self.extraValue
}
}
}
}
super.addAll(c)
}
}
override fun focus() {
getChildren().filterIsInstance<Radio>().firstOrNull()?.focus()
}
override fun blur() {
getChildren().filterIsInstance<Radio>().firstOrNull()?.blur()
}
override fun getState(): String? = value
override fun subscribe(observer: (String?) -> Unit): () -> Unit {
observers += observer
observer(value)
return {
observers -= observer
}
}
companion object {
internal var counter = 0
}
}
/**
* DSL builder extension function.
*
* It takes the same parameters as the constructor of the built component.
*/
fun Container.radioGroupInput(
options: List<StringPair>? = null, value: String? = null, name: String? = null, inline: Boolean = false,
init: (RadioGroupInput.() -> Unit)? = null
): RadioGroupInput {
val radioGroupInput = RadioGroupInput(options, value, name, inline).apply { init?.invoke(this) }
this.add(radioGroupInput)
return radioGroupInput
}
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