content/browser/android/content_ui_event_handler.h

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_ANDROID_CONTENT_UI_EVENT_HANDLER_H_
#define CONTENT_BROWSER_ANDROID_CONTENT_UI_EVENT_HANDLER_H_

#include "base/android/jni_android.h"
#include "base/android/jni_weak_ref.h"
#include "base/android/scoped_java_ref.h"
#include "base/memory/raw_ptr.h"

namespace ui {
class KeyEventAndroid;
class MotionEventAndroid;
}  // namespace ui

namespace content {

class RenderWidgetHostViewAndroid;
class WebContentsImpl;

// Handles UI events that need Java layer access.
// Owned by |WebContentsViewAndroid|.
class ContentUiEventHandler {
 public:
  explicit ContentUiEventHandler(WebContentsImpl* web_contents);
  ~ContentUiEventHandler();

  ContentUiEventHandler(const ContentUiEventHandler&) = delete;
  ContentUiEventHandler& operator=(const ContentUiEventHandler&) = delete;

  base::android::ScopedJavaLocalRef<jobject> GetJavaObject();

  bool OnGenericMotionEvent(const ui::MotionEventAndroid& event);
  bool OnKeyUp(const ui::KeyEventAndroid& event);
  bool DispatchKeyEvent(const ui::KeyEventAndroid& event);
  bool ScrollBy(float delta_x, float delta_y);
  bool ScrollTo(float x, float y);

  void SendMouseWheelEvent(JNIEnv* env,
                           const base::android::JavaRef<jobject>& event,
                           int64_t time_ns);
  void SendMouseEvent(JNIEnv* env,
                      const base::android::JavaRef<jobject>& event,
                      int64_t time_ns,
                      int32_t android_action_button,
                      int32_t android_tool_type);
  void SendScrollEvent(JNIEnv* env,
                       int64_t time_ms,
                       float delta_x,
                       float delta_y);
  void CancelFling(JNIEnv* env, int64_t time_ms);

 private:
  RenderWidgetHostViewAndroid* GetRenderWidgetHostView();

  const raw_ptr<WebContentsImpl> web_contents_;
};

}  // namespace content

#endif  // CONTENT_BROWSER_ANDROID_CONTENT_UI_EVENT_HANDLER_H_