Provided batched input delivery with a BufferedInputRouter

content/browser/renderer_host/input/browser_input_event.cc

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/browser/renderer_host/input/browser_input_event.h"
+
+#include "content/common/input/web_input_event_payload.h"
+
+namespace content {
+
+BrowserInputEvent::BrowserInputEvent(BrowserInputEventClient* client)
+    : client_(client) {}
+
+BrowserInputEvent::~BrowserInputEvent() {}
+
+scoped_ptr<BrowserInputEvent> BrowserInputEvent::Create(
+    int64 id,
+    scoped_ptr<InputEvent::Payload> payload,
+    BrowserInputEventClient* client) {
+  scoped_ptr<BrowserInputEvent> event(new BrowserInputEvent(client));
+  event->Initialize(id, payload.Pass());
+  return event.Pass();
+}
+
+void BrowserInputEvent::OnDispatched(
+    InputEventDisposition disposition,
+    ScopedVector<BrowserInputEvent>* followup_events) {
+  DCHECK(followup_events != NULL);
+  if (!client_)
+    return;
+
+  bool event_consumed =
+      disposition == INPUT_EVENT_MAIN_THREAD_CONSUMED ||
+      disposition == INPUT_EVENT_IMPL_THREAD_CONSUMED ||
+      disposition == INPUT_EVENT_MAIN_THREAD_PREVENT_DEFAULTED;
+
+  if (!event_consumed && CanCreateFollowupEvents())
+    client_->OnDispatched(*this, disposition, followup_events);
+  else
+    client_->OnDispatched(*this, disposition);
+}
+
+bool BrowserInputEvent::CanCreateFollowupEvents() const {
+  return payload()->GetType() == InputEvent::Payload::WEB_INPUT_EVENT &&
+      WebInputEventPayload::Cast(payload())->CanCreateFollowupEvents();
+}
+
+} // namespace content