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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.html
import com.github.snabbdom.VNode
import org.w3c.dom.events.MouseEvent
import pl.treksoft.kvision.core.Container
import pl.treksoft.kvision.core.ResString
import pl.treksoft.kvision.core.StringPair
import pl.treksoft.kvision.panel.SimplePanel
import pl.treksoft.kvision.utils.set
/**
* Link component.
*
* @constructor
* @param label link label
* @param url link URL address
* @param icon link icon
* @param image link image
* @param separator a separator between label and icon/image (defaults to space)
* @param labelFirst determines if the label is put before children elements (defaults to true)
* @param classes a set of CSS class names
*/
open class Link(
label: String, url: String? = null, icon: String? = null, image: ResString? = null,
separator: String? = null, labelFirst: Boolean = true,
classes: Set<String> = setOf()
) : SimplePanel(classes) {
/**
* Link label.
*/
var label by refreshOnUpdate(label)
/**
* Link URL address.
*/
var url by refreshOnUpdate(url)
/**
* Link icon.
*/
var icon by refreshOnUpdate(icon)
/**
* Link image.
*/
var image by refreshOnUpdate(image)
/**
* A separator between label and icon/image.
*/
var separator by refreshOnUpdate(separator)
/**
* Determines if the label is put before children elements.
*/
var labelFirst by refreshOnUpdate(labelFirst)
override fun render(): VNode {
val t = createLabelWithIcon(label, icon, image, separator)
return if (labelFirst) {
render("a", t + childrenVNodes())
} else {
render("a", childrenVNodes() + t)
}
}
override fun getSnAttrs(): List<StringPair> {
val pr = super.getSnAttrs().toMutableList()
url?.let {
pr.add("href" to it)
}
return pr
}
/**
* A convenient helper for easy setting onClick event handler.
*/
open fun onClick(handler: Link.(MouseEvent) -> Unit): Link {
this.setEventListener<Link> {
click = { e ->
self.handler(e)
}
}
return this
}
}
/**
* DSL builder extension function.
*
* It takes the same parameters as the constructor of the built component.
*/
fun Container.link(
label: String, url: String? = null, icon: String? = null, image: ResString? = null,
separator: String? = null, labelFirst: Boolean = true,
classes: Set<String>? = null,
className: String? = null,
init: (Link.() -> Unit)? = null
): Link {
val link =
Link(label, url, icon, image, separator, labelFirst, classes ?: className.set).apply { init?.invoke(this) }
this.add(link)
return link
}
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