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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.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 element an element to bind
* @param fixedPosition use fixed positioning
* @param classes a set of CSS class names
*/
open class ContextMenu(
element: Widget? = null,
protected val fixedPosition: Boolean = false,
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 = element?.getRoot() ?: 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 {
if (fixedPosition) {
this.top = DEFAULT_FIXED_POS_Y.px
this.left = DEFAULT_FIXED_POS_X.px
} else {
this.top = mouseEvent.pageY.toInt().px
this.left = mouseEvent.pageX.toInt().px
}
this.show()
return this
}
companion object {
const val DEFAULT_FIXED_POS_X = 5
const val DEFAULT_FIXED_POS_Y = 5
/**
* DSL builder extension function.
*
* It takes the same parameters as the constructor of the built component.
*/
fun Widget.contextMenu(
fixedPosition: Boolean = false,
classes: Set<String> = setOf(), init: (ContextMenu.() -> Unit)? = null
): ContextMenu {
val contextMenu = ContextMenu(this, fixedPosition, classes).apply { init?.invoke(this) }
this.setContextMenu(contextMenu)
return contextMenu
}
}
}
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