Introducing WebCoalescedInputEvent and inclusion in content/common

third_party/WebKit/Source/web/WebCoalescedInputEvent.cpp

+/*
+ * Copyright (C) 2009 Google Inc. All rights reserved.

[esprehn, 2016/12/20 20:46:18]

2009? Also use the short copyright for new files.

[Navid Zolghadr, 2016/12/22 20:50:33]

Done.

+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "public/platform/WebCoalescedInputEvent.h"
+
+#include "public/platform/WebGestureEvent.h"
+
+namespace blink {
+
+namespace {
+
+WebCoalescedInputEvent::ScopedWebInputEvent makeScopedWebInputEvent(
+    const blink::WebInputEvent& event) {
+  if (blink::WebInputEvent::isGestureEventType(event.type)) {
+    return WebCoalescedInputEvent::ScopedWebInputEvent(
+        new blink::WebGestureEvent(
+            static_cast<const blink::WebGestureEvent&>(event)));
+  }
+  if (blink::WebInputEvent::isMouseEventType(event.type)) {
+    return WebCoalescedInputEvent::ScopedWebInputEvent(new blink::WebMouseEvent(
+        static_cast<const blink::WebMouseEvent&>(event)));
+  }
+  if (blink::WebInputEvent::isTouchEventType(event.type)) {
+    return WebCoalescedInputEvent::ScopedWebInputEvent(new blink::WebTouchEvent(
+        static_cast<const blink::WebTouchEvent&>(event)));
+  }
+  if (event.type == blink::WebInputEvent::MouseWheel) {
+    return WebCoalescedInputEvent::ScopedWebInputEvent(
+        new blink::WebMouseWheelEvent(
+            static_cast<const blink::WebMouseWheelEvent&>(event)));
+  }
+  if (blink::WebInputEvent::isKeyboardEventType(event.type)) {
+    return WebCoalescedInputEvent::ScopedWebInputEvent(
+        new blink::WebKeyboardEvent(
+            static_cast<const blink::WebKeyboardEvent&>(event)));
+  }
+  NOTREACHED();
+  return WebCoalescedInputEvent::ScopedWebInputEvent();
+}
+}
+
+WebCoalescedInputEvent::WebInputEventDeleter::WebInputEventDeleter() {}
+
+void WebCoalescedInputEvent::WebInputEventDeleter::operator()(
+    WebInputEvent* event) const {
+  if (!event)
+    return;
+  const WebInputEvent::Type& type = event->type;
+  if (WebInputEvent::isMouseEventType(type))
+    delete static_cast<WebMouseEvent*>(event);
+  else if (type == WebInputEvent::MouseWheel)
+    delete static_cast<WebMouseWheelEvent*>(event);
+  else if (WebInputEvent::isKeyboardEventType(type))
+    delete static_cast<WebKeyboardEvent*>(event);
+  else if (WebInputEvent::isTouchEventType(type))
+    delete static_cast<WebTouchEvent*>(event);
+  else if (WebInputEvent::isGestureEventType(type))
+    delete static_cast<WebGestureEvent*>(event);
+  NOTREACHED();
+}
+
+WebInputEvent* WebCoalescedInputEvent::eventPointer() {
+  return mEvent.get();
+}
+
+void WebCoalescedInputEvent::addCoalescedEvent(
+    const blink::WebInputEvent& event) {
+  mCoalescedEvents.push_back(makeScopedWebInputEvent(event));
+}
+
+const WebInputEvent& WebCoalescedInputEvent::event() const {
+  return *mEvent.get();
+}
+
+size_t WebCoalescedInputEvent::coalescedEventSize() const {
+  return mCoalescedEvents.size();
+}
+
+const WebInputEvent* WebCoalescedInputEvent::coalescedEvent(int index) const {
+  return mCoalescedEvents[index].get();
+}
+
+std::vector<const WebInputEvent*>
+WebCoalescedInputEvent::getCoalescedEventsPointers() const {
+  std::vector<const WebInputEvent*> events(mCoalescedEvents.size());
+  for (const auto& event : mCoalescedEvents)
+    events.push_back(event.get());
+  return events;
+}
+
+WebCoalescedInputEvent::WebCoalescedInputEvent(ScopedWebInputEvent event)
+    : mEvent(std::move(event)), mCoalescedEvents() {
+  mCoalescedEvents.push_back(makeScopedWebInputEvent(*(mEvent.get())));
+}
+
+WebCoalescedInputEvent::WebCoalescedInputEvent(const WebInputEvent& event)
+    : mEvent(), mCoalescedEvents() {
+  mEvent = makeScopedWebInputEvent(event);
+  mCoalescedEvents.push_back(makeScopedWebInputEvent(event));
+}
+
+WebCoalescedInputEvent::WebCoalescedInputEvent(
+    const WebInputEvent& event,
+    const std::vector<const WebInputEvent*>& coalescedEvents)
+    : mEvent(), mCoalescedEvents(coalescedEvents.size()) {
+  mEvent = makeScopedWebInputEvent(event);
+  for (const auto& coalescedEvent : coalescedEvents)
+    mCoalescedEvents.push_back(makeScopedWebInputEvent(*coalescedEvent));
+}
+
+}  // namespace blink