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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.panel
import com.github.snabbdom.VNode
import pl.treksoft.kvision.core.Component
import pl.treksoft.kvision.core.Container
import pl.treksoft.kvision.routing.routing
/**
* The container with only one active (visible) child at any moment.
*
* It supports activating children by a JavaScript route.
*
* @constructor
* @param activateLast determines if added component is automatically activated (default true)
* @param classes a set of CSS class names
* @param init an initializer extension function
*/
open class StackPanel(
private val activateLast: Boolean = true,
classes: Set<String> = setOf(), init: (StackPanel.() -> Unit)? = null
) : SimplePanel(classes) {
/**
* The index of active (visible) child.
*/
var activeIndex by refreshOnUpdate(-1)
init {
@Suppress("LeakingThis")
init?.invoke(this)
}
override fun childrenVNodes(): Array<VNode> {
return if (activeIndex in children.indices) {
arrayOf(children[activeIndex].renderVNode())
} else {
arrayOf()
}
}
/**
* Adds given component and bounds it's activation to a given route.
* @param panel child component
* @param route JavaScript route to activate given child
* @return current container
*/
open fun add(panel: Component, route: String): StackPanel {
add(panel)
val currentIndex = children.size - 1
routing.on(route, { _ -> activeIndex = currentIndex }).resolve()
return this
}
override fun add(child: Component): StackPanel {
super.add(child)
if (activateLast) activeIndex = children.size - 1
else if (activeIndex == -1) activeIndex = 0
return this
}
override fun addAll(children: List<Component>): StackPanel {
super.addAll(children)
if (activateLast) activeIndex = this.children.size - 1
else if (activeIndex == -1) activeIndex = 0
return this
}
override fun remove(child: Component): StackPanel {
super.remove(child)
if (activeIndex > children.size - 1) activeIndex = children.size - 1
return this
}
override fun removeAll(): StackPanel {
super.removeAll()
if (activeIndex > children.size - 1) activeIndex = children.size - 1
return this
}
companion object {
/**
* DSL builder extension function.
*
* It takes the same parameters as the constructor of the built component.
*/
fun Container.stackPanel(
activateLast: Boolean = true, classes: Set<String> = setOf(), init: (StackPanel.() -> Unit)? = null
): StackPanel {
val stackPanel = StackPanel(activateLast, classes, init)
this.add(stackPanel)
return stackPanel
}
}
}
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