Keyboard Lock Host implementation

components/keyboard_lock/widget_key_event_filter.cc

+// Copyright 2017 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 "components/keyboard_lock/widget_key_event_filter.h"
+
+#include "base/logging.h"
+#include "content/public/browser/native_web_keyboard_event.h"
+#include "content/public/browser/render_view_host.h"
+#include "content/public/browser/render_widget_host.h"
+#include "content/public/browser/web_contents.h"
+#include "ui/events/event.h"
+
+namespace keyboard_lock {
+
+namespace {
+
+content::NativeWebKeyboardEvent CreateNativeEvent(ui::EventType type,
+                                                  ui::KeyboardCode code,
+                                                  int flags) {
+  content::NativeWebKeyboardEvent event(ui::KeyEvent(type, code, flags));
+  event.skip_in_browser = true;
+  return event;
+}
+
+}  // namespace
+
+WidgetKeyEventFilter::WidgetKeyEventFilter(const content::WebContents* contents)
+    : host_(contents->GetRenderViewHost()->GetWidget()) {
+  DCHECK(host_);
+}
+
+WidgetKeyEventFilter::~WidgetKeyEventFilter() = default;
+
+bool WidgetKeyEventFilter::OnKeyDown(ui::KeyboardCode code, int flags) {
+  LOG(ERROR) << "Forwarding OnKeyDown " << code << " with flags " << flags;
+  host_->ForwardKeyboardEvent(CreateNativeEvent(
+      ui::ET_KEY_PRESSED, code, flags));
+  return true;
+}
+
+bool WidgetKeyEventFilter::OnKeyUp(ui::KeyboardCode code, int flags) {
+  LOG(ERROR) << "Forwarding OnKeyUp " << code << " with flags " << flags;
+  host_->ForwardKeyboardEvent(CreateNativeEvent(
+      ui::ET_KEY_RELEASED, code, flags));
+  return true;
+}
+
+}  // namespace keyboard_lock