Auto merge of #5617 - nox:wholetext, r=jdm

components/script/dom/node.rs

@@ -486,6 +486,7 @@ pub trait NodeHelpers<'a> {
 
     fn traverse_preorder(self) -> TreeIterator<'a>;
     fn inclusively_following_siblings(self) -> NodeSiblingIterator;
+    fn inclusively_preceding_siblings(self) -> ReverseSiblingIterator;
 
     fn to_trusted_node_address(self) -> TrustedNodeAddress;
 
@@ -754,6 +755,12 @@ impl<'a> NodeHelpers<'a> for JSRef<'a, Node> {
         }
     }
 
+    fn inclusively_preceding_siblings(self) -> ReverseSiblingIterator {
+        ReverseSiblingIterator {
+            current: Some(Temporary::from_rooted(self)),
+        }
+    }
+
     fn is_inclusive_ancestor_of(self, parent: JSRef<Node>) -> bool {
         self == parent || parent.ancestors().any(|ancestor| ancestor.root().r() == self)
     }

components/script/dom/text.rs

@@ -2,16 +2,17 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-use dom::bindings::codegen::Bindings::TextBinding;
+use dom::bindings::codegen::Bindings::TextBinding::{self, TextMethods};
 use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
-use dom::bindings::codegen::InheritTypes::TextDerived;
+use dom::bindings::codegen::InheritTypes::{CharacterDataCast, TextDerived};
+use dom::bindings::codegen::InheritTypes::NodeCast;
 use dom::bindings::error::Fallible;
 use dom::bindings::global::GlobalRef;
 use dom::bindings::js::{JSRef, Temporary};
-use dom::characterdata::CharacterData;
+use dom::characterdata::{CharacterData, CharacterDataHelpers};
 use dom::document::Document;
 use dom::eventtarget::{EventTarget, EventTargetTypeId};
-use dom::node::{Node, NodeTypeId};
+use dom::node::{Node, NodeHelpers, NodeTypeId};
 use util::str::DOMString;
 
 /// An HTML text node.
@@ -44,3 +45,21 @@ impl Text {
     }
 }
 
+impl<'a> TextMethods for JSRef<'a, Text> {
+    // https://dom.spec.whatwg.org/#dom-text-wholetext
+    fn WholeText(self) -> DOMString {
+        let first = NodeCast::from_ref(self).inclusively_preceding_siblings()
+                                            .map(|node| node.root())
+                                            .take_while(|node| node.r().is_text())
+                                            .last().unwrap();
+        let nodes = first.r().inclusively_following_siblings().map(|node| node.root())
+                             .take_while(|node| node.r().is_text());
+        let mut text = DOMString::new();
+        for node in nodes {
+            let cdata = CharacterDataCast::to_ref(node.r()).unwrap();
+            text.push_str(&cdata.data());
+        }
+        text
+    }
+}
+

components/script/dom/webidls/Text.webidl

@@ -14,5 +14,5 @@
 [Constructor(optional DOMString data = "")]
 interface Text : CharacterData {
   //[NewObject] Text splitText(unsigned long offset);
-  //readonly attribute DOMString wholeText;
+  readonly attribute DOMString wholeText;
 };