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/*
* Copyright (c) 2018. Robert Jaros
*/
package pl.treksoft.kvision.dropdown
import org.w3c.dom.events.MouseEvent
import pl.treksoft.kvision.core.Display
import pl.treksoft.kvision.core.Widget
import pl.treksoft.kvision.html.ListTag
import pl.treksoft.kvision.html.ListType
import pl.treksoft.kvision.panel.Root
import pl.treksoft.kvision.utils.px
/**
* Context menu component.
*
* @constructor
* @param classes a set of CSS class names
*/
open class ContextMenu(
classes: Set<String> = setOf(), init: (ContextMenu.() -> Unit)? = null
) : ListTag(ListType.UL, classes = classes + "dropdown-menu") {
init {
@Suppress("LeakingThis")
hide()
@Suppress("LeakingThis")
display = Display.BLOCK
val root = Root.getLastRoot()
if (root != null) {
@Suppress("LeakingThis")
root.addContextMenu(this)
} else {
println("At least one Root object is required to create a context menu!")
}
@Suppress("LeakingThis")
init?.invoke(this)
}
/**
* Positions and shows a context menu based on a mouse event.
* @param mouseEvent mouse event
* @return current context menu
*/
open fun positionMenu(mouseEvent: MouseEvent): ContextMenu {
this.top = mouseEvent.pageY.toInt().px
this.left = mouseEvent.pageX.toInt().px
this.show()
return this
}
companion object {
/**
* DSL builder extension function.
*
* It takes the same parameters as the constructor of the built component.
*/
fun Widget.contextMenu(
classes: Set<String> = setOf(), init: (ContextMenu.() -> Unit)? = null
): ContextMenu {
val contextMenu = ContextMenu(classes).apply { init?.invoke(this) }
this.setContextMenu(contextMenu)
return contextMenu
}
}
}
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