Add InputEvent and EventPacket types for batched input delivery

content/common/input/web_platform_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/common/input/web_platform_input_event.h"
+
+#include "base/logging.h"
+#include "third_party/WebKit/public/web/WebInputEvent.h"
+
+namespace content {
+namespace {
+static WebPlatformInputEvent::ScopedWebInputEvent CloneWebInputEvent(
+    const WebKit::WebInputEvent& event) {
+  WebPlatformInputEvent::ScopedWebInputEvent clone;
+  if (WebKit::WebInputEvent::isMouseEventType(event.type))
+    clone.reset(new WebKit::WebMouseEvent());
+  else if (event.type == WebKit::WebInputEvent::MouseWheel)
+    clone.reset(new WebKit::WebMouseWheelEvent());
+  else if (WebKit::WebInputEvent::isKeyboardEventType(event.type))
+    clone.reset(new WebKit::WebKeyboardEvent());
+  else if (WebKit::WebInputEvent::isTouchEventType(event.type))
+    clone.reset(new WebKit::WebTouchEvent());
+  else if (WebKit::WebInputEvent::isGestureEventType(event.type))
+    clone.reset(new WebKit::WebGestureEvent());
+  else
+    NOTREACHED() << "Unknown webkit event type " << event.type;
+
+  if (!clone)
+    return clone.Pass();
+
+  DCHECK_EQ(event.size, clone->size);
+  memcpy(clone.get(), &event, event.size);
+  return clone.Pass();
+}
+}  // namespace
+
+WebPlatformInputEvent::WebInputEventDeleter::WebInputEventDeleter() {}
+
+void WebPlatformInputEvent::WebInputEventDeleter::operator()(
+    WebKit::WebInputEvent* event) const {
+  if (!event)
+    return;
+
+  if (WebKit::WebInputEvent::isMouseEventType(event->type))
+    delete static_cast<WebKit::WebMouseEvent*>(event);
+  else if (event->type == WebKit::WebInputEvent::MouseWheel)
+    delete static_cast<WebKit::WebMouseWheelEvent*>(event);
+  else if (WebKit::WebInputEvent::isKeyboardEventType(event->type))
+    delete static_cast<WebKit::WebKeyboardEvent*>(event);
+  else if (WebKit::WebInputEvent::isTouchEventType(event->type))
+    delete static_cast<WebKit::WebTouchEvent*>(event);
+  else if (WebKit::WebInputEvent::isGestureEventType(event->type))
+    delete static_cast<WebKit::WebGestureEvent*>(event);
+  else
+    NOTREACHED() << "Unknown webkit event type " << event->type;
+}
+
+WebPlatformInputEvent::WebPlatformInputEvent(AckType ack_type, int64 id)
+    : InputEvent(WEB_PLATFORM, ack_type, id),
+      is_keyboard_shortcut(false) {}
+
+WebPlatformInputEvent::~WebPlatformInputEvent() {}
+
+scoped_ptr<WebPlatformInputEvent> WebPlatformInputEvent::Create() {
+  return make_scoped_ptr(new WebPlatformInputEvent(ACK_REQUIRED, 0));
+}
+
+scoped_ptr<WebPlatformInputEvent> WebPlatformInputEvent::Create(
+    int64 id,
+    const WebKit::WebInputEvent& event,
+    const ui::LatencyInfo& latency_info,
+    bool is_keyboard_shortcut,
+    bool can_create_followup_events) {
+  AckType ack_type = can_create_followup_events ? ACK_CAN_CREATE_FOLLOWUP_EVENTS
+                                                : ACK_REQUIRED;
+  scoped_ptr<WebPlatformInputEvent> web_event(
+      new WebPlatformInputEvent(ack_type, id));
+  web_event->Initialize(event,
+                        latency_info,
+                        is_keyboard_shortcut);
+  return web_event.Pass();
+}
+
+void WebPlatformInputEvent::Initialize(const WebKit::WebInputEvent& event,
+                                       const ui::LatencyInfo& latency_info,
+                                       bool is_keyboard_shortcut) {
+  this->event = CloneWebInputEvent(event);
+  this->latency_info = latency_info;
+  this->is_keyboard_shortcut = is_keyboard_shortcut;
+}
+
+const WebPlatformInputEvent* WebPlatformInputEvent::EventCast(
+    const InputEvent* event) {
+  DCHECK_EQ(InputEvent::WEB_PLATFORM, event->type);
+  return static_cast<const WebPlatformInputEvent*>(event);
+}
+
+}  // namespace content