Adding for support Blob.{close,isClose} #6723

components/script/dom/blob.rs

@@ -18,6 +18,7 @@ use num::ToPrimitive;
 use std::ascii::AsciiExt;
 use std::borrow::ToOwned;
 use std::cmp::{min, max};
+use std::cell::{Cell};
 
 #[derive(JSTraceable)]
 pub enum BlobTypeId {
@@ -32,8 +33,8 @@ pub struct Blob {
     type_: BlobTypeId,
     bytes: Option<Vec<u8>>,
     typeString: DOMString,
-    global: GlobalField
-    // isClosed_: bool
+    global: GlobalField,
+    isClosed_: Cell<bool>
 }
 
 fn is_ascii_printable(string: &DOMString) -> bool{
@@ -50,8 +51,8 @@ impl Blob {
             type_: type_,
             bytes: bytes,
             typeString: typeString.to_owned(),
-            global: GlobalField::from_rooted(&global)
-            //isClosed_: false
+            global: GlobalField::from_rooted(&global),
+            isClosed_: Cell::new(false)
         }
     }
 
@@ -83,7 +84,6 @@ impl Blob {
 
 pub trait BlobHelpers {
     fn read_out_buffer(self) -> Receiver<Vec<u8>>;
-    fn read_out_type(self) -> DOMString;
 }
 
 impl<'a> BlobHelpers for &'a Blob {
@@ -92,9 +92,6 @@ impl<'a> BlobHelpers for &'a Blob {
         send.send(self.bytes.clone().unwrap_or(vec![])).unwrap();
         recv
     }
-    fn read_out_type(self) -> DOMString {
-        self.typeString.clone()
-    }
 }
 
 impl<'a> BlobMethods for &'a Blob {
@@ -159,15 +156,24 @@ impl<'a> BlobMethods for &'a Blob {
         }
     }
 
-    // http://dev.w3.org/2006/webapi/FileAPI/#dfn-isClosed
-    //fn IsClosed(self) -> bool {
-    //    self.isClosed_.clone()
-    //}
+    // https://dev.w3.org/2006/webapi/FileAPI/#dfn-isClosed
+    fn IsClosed(self) -> bool {
+        self.isClosed_.get()
+    }
 
-    // http://dev.w3.org/2006/webapi/FileAPI/#dfn-close
-    //fn Close(self) {
-    //    TODO
-    //}
+    // https://dev.w3.org/2006/webapi/FileAPI/#dfn-close
+    fn Close(self) {
+        // Step 1
+        if self.isClosed_.get() {
+            return;
+        }
+
+        // Step 2
+        self.isClosed_.set(true);
+
+        // TODO Step 3 if Blob URL Store is implemented
+
+    }
 }
 
 impl FileDerived for Blob {

components/script/dom/filereader.rs

@@ -2,6 +2,7 @@
  * 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::BlobBinding::BlobMethods;
 use dom::bindings::codegen::Bindings::FileReaderBinding::{self, FileReaderConstants, FileReaderMethods};
 use dom::bindings::codegen::InheritTypes::{EventCast, EventTargetCast};
 use dom::bindings::codegen::Bindings::EventHandlerBinding::EventHandlerNonNull;
@@ -268,7 +269,6 @@ impl FileReader {
 
         Ok(Some(output))
     }
-
 }
 
 impl<'a> FileReaderMethods for &'a FileReader {
@@ -287,13 +287,22 @@ impl<'a> FileReaderMethods for &'a FileReader {
         if self.ready_state.get() == FileReaderReadyState::Loading {
             return Err(InvalidState);
         }
-        //TODO STEP 2 if isClosed implemented in Blob
+
+        // Step 2
+        if blob.IsClosed() {
+            let global = self.global.root();
+            let exception = DOMException::new(global.r(), DOMErrorName::InvalidStateError);
+            self.error.set(Some(JS::from_rooted(&exception)));
+
+            self.dispatch_progress_event("error".to_owned(), 0, None);
+            return Ok(());
+        }
 
         // Step 3
         self.change_ready_state(FileReaderReadyState::Loading);
 
         let bytes = blob.read_out_buffer();
-        let type_ = blob.read_out_type();
+        let type_ = blob.Type();
 
         let load_data = ReadData::new(bytes, type_, None, FileReaderFunction::ReadAsDataUrl);
 
@@ -307,13 +316,22 @@ impl<'a> FileReaderMethods for &'a FileReader {
         if self.ready_state.get() == FileReaderReadyState::Loading {
             return Err(InvalidState);
         }
-        //TODO STEP 2 if isClosed implemented in Blob
+
+        // Step 2
+        if blob.IsClosed() {
+            let global = self.global.root();
+            let exception = DOMException::new(global.r(), DOMErrorName::InvalidStateError);
+            self.error.set(Some(JS::from_rooted(&exception)));
+
+            self.dispatch_progress_event("error".to_owned(), 0, None);
+            return Ok(());
+        }
 
         // Step 3
         self.change_ready_state(FileReaderReadyState::Loading);
 
         let bytes = blob.read_out_buffer();
-        let type_ = blob.read_out_type();
+        let type_ = blob.Type();
 
         let load_data = ReadData::new(bytes, type_, label, FileReaderFunction::ReadAsText);
 

components/script/dom/webidls/Blob.webidl

@@ -8,19 +8,20 @@
 // Constructor(sequence<(ArrayBuffer or ArrayBufferView or Blob or DOMString)> blobParts,
 //             optional BlobPropertyBag options)]
 [Constructor,
- Constructor(DOMString blobParts, optional BlobPropertyBag options)]
+ Constructor(DOMString blobParts, optional BlobPropertyBag options),
+ Exposed=Window/*,Worker*/]
 interface Blob {
 
   readonly attribute unsigned long long size;
   readonly attribute DOMString type;
-  //readonly attribute boolean isClosed;
+  readonly attribute boolean isClosed;
 
   //slice Blob into byte-ranged chunks
 
   Blob slice([Clamp] optional long long start,
              [Clamp] optional long long end,
              optional DOMString contentType);
-  //void close();
+  void close();
 
 };
 

tests/wpt/metadata/FileAPI/blob/Blob-close.html.ini

@@ -1,5 +0,0 @@
-[Blob-close.html]
-  type: testharness
-  [Blob.close]
-    expected: FAIL
-

tests/wpt/metadata/FileAPI/idlharness.html.ini

@@ -9,18 +9,6 @@
   [URL interface: operation revokeObjectURL(DOMString)]
     expected: FAIL
 
-  [Blob interface: attribute isClosed]
-    expected: FAIL
-
-  [Blob interface: operation close()]
-    expected: FAIL
-
-  [Blob interface: new Blob(["TEST"\]) must inherit property "isClosed" with the proper type (2)]
-    expected: FAIL
-
-  [Blob interface: new Blob(["TEST"\]) must inherit property "close" with the proper type (4)]
-    expected: FAIL
-
   [File interface: existence and properties of interface object]
     expected: FAIL
 

tests/wpt/metadata/FileAPI/idlharness.worker.js.ini

@@ -9,18 +9,6 @@
   [URL interface: operation revokeObjectURL(DOMString)]
     expected: FAIL
 
-  [Blob interface: attribute isClosed]
-    expected: FAIL
-
-  [Blob interface: operation close()]
-    expected: FAIL
-
-  [Blob interface: new Blob(["TEST"\]) must inherit property "isClosed" with the proper type (2)]
-    expected: FAIL
-
-  [Blob interface: new Blob(["TEST"\]) must inherit property "close" with the proper type (4)]
-    expected: FAIL
-
   [File interface: existence and properties of interface object]
     expected: FAIL
 

tests/wpt/web-platform-tests/FileAPI/blob/Blob-close.html

@@ -11,17 +11,27 @@ test(function() {
   var blob = new Blob(["TEST"]);
   var sliced = blob.slice();
   blob.close();
-  test_blob(function() {
-    return blob;
-  }, {
-    expected: "",
-    type: "",
-    desc: "Blob should be empty."
+
+  async_test(function(t) {
+    var reader = new FileReader();
+
+    reader.onload = t.step_func(function(evt) {
+      assert_unreached("Should not dispatch the load event");
     });
+
+    reader.onerror = t.step_func(function(e) {
+      assert_equals(reader.result, null);
+      assert_equals(reader.error.code, DOMException.INVALID_STATE_ERR);
+      t.done();
+    });
+
+    reader.readAsText(blob, "UTF-8");
+  }, "Closed Blob");
+
   test_blob(function() {
     return sliced;
   }, {
-    expected: "PASS",
+    expected: "TEST",
     type: "",
     desc: "Slice should still have the data."
   });