Adding facade for ResizeObserver and required types

Author: chrisshafer

dom/src/main/scala/org/scalajs/dom/DOMRectReadOnly.scala

@@ -0,0 +1,55 @@
+package org.scalajs.dom
+
+import scala.scalajs.js
+
+@js.native
+trait DOMRectReadOnly extends js.Object {
+
+  /** The x coordinate of the DOMRect's origin.
+    *
+    * MDN
+    */
+  def x: Double = js.native
+
+  /** The y coordinate of the DOMRect's origin.
+    *
+    * MDN
+    */
+  def y: Double = js.native
+
+  /** The width of the DOMRect.
+    *
+    * MDN
+    */
+  def width: Double = js.native
+
+  /** The height of the DOMRect.
+    *
+    * MDN
+    */
+  def height: Double = js.native
+
+  /** Returns the top coordinate value of the DOMRect (usually the same as y.)
+    *
+    * MDN
+    */
+  def top: Double = js.native
+
+  /** Returns the right coordinate value of the DOMRect (usually the same as x + width).
+    *
+    * MDN
+    */
+  def right: Double = js.native
+
+  /** Returns the bottom coordinate value of the DOMRect (usually the same as y + height)
+    *
+    * MDN
+    */
+  def bottom: Double = js.native
+
+  /** Returns the left coordinate value of the DOMRect (usually the same as x)
+    *
+    * MDN
+    */
+  def left: Double = js.native
+}

dom/src/main/scala/org/scalajs/dom/ResizeObserver.scala

@@ -0,0 +1,33 @@
+package org.scalajs.dom
+
+import scala.scalajs.js
+import scala.scalajs.js.annotation.JSGlobal
+
+/** The ResizeObserver constructor creates a new ResizeObserver object, which can be used to report changes to the
+  * content or border box of an Element or the bounding box of an SVGElement - MDN
+  *
+  * @param callback
+  *   The function called whenever an observed resize occurs. - MDN
+  */
+@js.native
+@JSGlobal
+class ResizeObserver(callback: js.Function2[js.Array[ResizeObserverEntry], ResizeObserver, _]) extends js.Object {
+
+  /** Starts observing the specified Element or SVGElement.
+    *
+    * MDN
+    */
+  def observe(target: Node, options: js.UndefOr[ResizeObserverOptions] = js.native): Unit = js.native
+
+  /** Unobserves all observed Element or SVGElement targets.
+    *
+    * MDN
+    */
+  def disconnect(): Unit = js.native
+
+  /** Ends the observing of a specified Element or SVGElement.
+    *
+    * MDN
+    */
+  def unobserve(target: Node): Unit = js.native
+}

dom/src/main/scala/org/scalajs/dom/ResizeObserverEntry.scala

@@ -0,0 +1,41 @@
+package org.scalajs.dom
+
+import scala.scalajs.js
+
+/** The ResizeObserverEntry interface represents the object passedto the ResizeObserver() constructor's callback
+  * function, which allows you to access the new dimensions of the Element or SVGElement being observed.
+  *
+  * MDN
+  */
+@js.native
+trait ResizeObserverEntry extends js.Object {
+
+  /** A reference to the Element or SVGElement being observed
+    *
+    * MDN
+    */
+  def target: Node = js.native
+
+  /** An array containing objects with the new border box size of the observed element. The array is necessary to
+    * support elements that have multiple fragments, which occur in multi-column scenarios.
+    *
+    * MDN
+    */
+  def borderBoxSize: js.Array[ResizeObserverSize] = js.native
+
+  /** An array containing objects with the new content box size of the observed element. The array is necessary to
+    * support elements that have multiple fragments, which occur in multi-column scenarios.
+    *
+    * MDN
+    */
+  def contentBoxSize: js.Array[ResizeObserverSize] = js.native
+
+  /** A [[DOMRectReadOnly]] object containing the new size of the observed element when the callback is run. Note that
+    * this is better supported than the above two properties, but it is left over from an earlier implementation of the
+    * Resize Observer API, is still included in the spec for web compat reasons, and may be deprecated in future
+    * versions.
+    *
+    * MDN
+    */
+  def contentRect: DOMRectReadOnly = js.native
+}

dom/src/main/scala/org/scalajs/dom/ResizeObserverOptions.scala

@@ -0,0 +1,21 @@
+package org.scalajs.dom
+
+import scala.scalajs.js
+
+@js.native
+trait ResizeObserverOptions extends js.Object {
+  var box: js.UndefOr[String] = js.native
+}
+
+/** Factory for [[ResizeObserverOptions]] objects. */
+object ResizeObserverOptions {
+
+  /** Creates a new [[ResizeObserverOptions]] object with the given values. */
+  def apply(
+      box: Option[String] = None
+  ): ResizeObserverOptions = {
+    val res = js.Dynamic.asInstanceOf[ResizeObserverOptions]
+    box.foreach(res.box = _)
+    res
+  }
+}

dom/src/main/scala/org/scalajs/dom/ResizeObserverSize.scala

@@ -0,0 +1,23 @@
+package org.scalajs.dom
+
+import scala.scalajs.js
+
+@js.native
+trait ResizeObserverSize extends js.Object {
+
+  /** The length of the observed element's border box in the block dimension. For boxes with a horizontal writing-mode,
+    * this is the vertical dimension, or height; if the writing-mode is vertical, this is the horizontal dimension, or
+    * width.
+    *
+    * MDN
+    */
+  def blockSize: Double = js.native
+
+  /** The length of the observed element's border box in the inline dimension. For boxes with a horizontal writing-mode,
+    * this is the horizontal dimension, or width; if the writing-mode is vertical, this is the vertical dimension, or
+    * height.
+    *
+    * MDN
+    */
+  def inlineSize: Double = js.native
+}