Element.closest

Author: toastal

CHANGELOG.md

@@ -10,6 +10,7 @@ Breaking changes:
 
 New features:
 - Add support for ShadowRoot API (#34)
+- Add support for `Element.closest` (#39)
 
 Bugfixes:
 

src/Web/DOM/Element.js

@@ -105,6 +105,14 @@ exports.removeAttribute = function (name) {
   };
 };
 
+exports._closest = function (selector) {
+  return function(element) {
+    return function() {
+      return element.closest(selector);
+    };
+  };
+};
+
 // - CSSOM ---------------------------------------------------------------------
 
 exports.scrollTop = function (node) {

src/Web/DOM/Element.purs

@@ -26,6 +26,7 @@ module Web.DOM.Element
   , getAttribute
   , hasAttribute
   , removeAttribute
+  , closest
   , scrollTop
   , setScrollTop
   , scrollLeft
@@ -52,6 +53,8 @@ import Web.DOM.Internal.Types (Element) as Exports
 import Web.DOM.Internal.Types (Element, HTMLCollection, Node)
 import Web.DOM.NonDocumentTypeChildNode (NonDocumentTypeChildNode)
 import Web.DOM.ParentNode (ParentNode)
+import Web.DOM.ParentNode (QuerySelector) as Exports
+import Web.DOM.ParentNode (ParentNode, QuerySelector)
 import Web.DOM.ShadowRoot (ShadowRoot, ShadowRootMode)
 import Web.Event.EventTarget (EventTarget)
 import Web.Internal.FFI (unsafeReadProtoTagged)
@@ -121,6 +124,11 @@ foreign import _getAttribute :: String -> Element -> Effect (Nullable String)
 foreign import hasAttribute :: String -> Element -> Effect Boolean
 foreign import removeAttribute :: String -> Element -> Effect Unit
 
+closest :: QuerySelector -> Element -> Effect (Maybe Element)
+closest qs = may toMaybe <<< _closest qs
+
+foreign import _closest :: QuerySelector -> Element -> Effect (Nullable Element)
+
 foreign import scrollTop :: Element -> Effect Number
 foreign import setScrollTop :: Number -> Element -> Effect Unit