1 files changed, 66 insertions, 0 deletions
diff --git a/src/main/kotlin/pl/treksoft/kvision/dropdown/ContextMenu.kt b/src/main/kotlin/pl/treksoft/kvision/dropdown/ContextMenu.kt
new file mode 100644
index 00000000..ed788ab7
--- /dev/null
+++ b/src/main/kotlin/pl/treksoft/kvision/dropdown/ContextMenu.kt
@@ -0,0 +1,66 @@
+/*
+ * 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
+        }
+    }
+}