Implement the FileList interface. Fixes #6708

components/script/dom/filelist.rs

@@ -0,0 +1,51 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * 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::FileListBinding;
+use dom::bindings::codegen::Bindings::FileListBinding::FileListMethods;
+use dom::bindings::global::GlobalRef;
+use dom::bindings::js::{JS, Root};
+use dom::bindings::utils::{Reflector, reflect_dom_object};
+use dom::file::File;
+use dom::window::Window;
+
+// https://w3c.github.io/FileAPI/#dfn-filelist
+#[dom_struct]
+pub struct FileList {
+    reflector_: Reflector,
+    list: Vec<JS<File>>
+}
+
+impl FileList {
+    fn new_inherited(files: Vec<JS<File>>) -> FileList {
+        FileList {
+            reflector_: Reflector::new(),
+            list: files
+        }
+    }
+
+    pub fn new(window: &Window, files: Vec<JS<File>>) -> Root<FileList> {
+        reflect_dom_object(box FileList::new_inherited(files), GlobalRef::Window(window), FileListBinding::Wrap)
+    }
+}
+
+impl<'a> FileListMethods for &'a FileList {
+    // https://w3c.github.io/FileAPI/#dfn-length
+    fn Length(self) -> u32 {
+        self.list.len() as u32
+    }
+
+    // https://w3c.github.io/FileAPI/#dfn-item
+    fn Item(self, index: u32) -> Option<Root<File>> {
+        Some(self.list[index as usize].root())
+    }
+
+    // check-tidy: no specs after this line
+    fn IndexedGetter(self, index: u32, found: &mut bool) -> Option<Root<File>> {
+        let item = self.Item(index);
+        *found = item.is_some();
+        item
+    }
+}
+

components/script/dom/mod.rs

@@ -215,6 +215,7 @@ pub mod event;
 pub mod eventdispatcher;
 pub mod eventtarget;
 pub mod file;
+pub mod filelist;
 pub mod filereader;
 pub mod formdata;
 pub mod htmlanchorelement;

components/script/dom/webidls/FileList.webidl

@@ -0,0 +1,11 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * 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/. */
+
+// https://w3c.github.io/FileAPI/#dfn-filelist
+
+interface FileList {
+  getter File? item(unsigned long index);
+  readonly attribute unsigned long length;
+};