Implement FileReader.{readAsText,readAsDataUrl}. Fixes #6172

components/script/dom/blob.rs

@@ -9,6 +9,8 @@ use dom::bindings::utils::{Reflector, reflect_dom_object};
 use dom::bindings::error::Fallible;
 use dom::bindings::codegen::Bindings::BlobBinding;
 use dom::bindings::codegen::Bindings::BlobBinding::BlobMethods;
+use std::sync::mpsc;
+use std::sync::mpsc::Receiver;
 
 use util::str::DOMString;
 
@@ -79,6 +81,22 @@ impl Blob {
     }
 }
 
+pub trait BlobHelpers {
+    fn read_out_buffer(self) -> Receiver<Option<Vec<u8>>> ;
+    fn read_out_type(self) -> DOMString;
+}
+
+impl<'a> BlobHelpers for &'a Blob {
+    fn read_out_buffer(self) -> Receiver<Option<Vec<u8>>> {
+        let (send, recv) = mpsc::channel();
+        send.send(self.bytes.clone()).unwrap();
+        recv
+    }
+    fn read_out_type(self) -> DOMString {
+        self.typeString.clone()
+    }
+}
+
 impl<'a> BlobMethods for &'a Blob {
     // http://dev.w3.org/2006/webapi/FileAPI/#dfn-size
     fn Size(self) -> u64{

components/script/dom/eventtarget.rs

@@ -48,6 +48,7 @@ pub enum EventTargetTypeId {
     WebSocket,
     Window,
     Worker,
+    FileReader,
     WorkerGlobalScope(WorkerGlobalScopeTypeId),
     XMLHttpRequestEventTarget(XMLHttpRequestEventTargetTypeId)
 }