ui/events/android/drag_event_android.h

// 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.

#ifndef UI_EVENTS_ANDROID_DRAG_EVENT_ANDROID_H_
#define UI_EVENTS_ANDROID_DRAG_EVENT_ANDROID_H_

#include <jni.h>
#include <vector>

#include "base/android/scoped_java_ref.h"
#include "base/macros.h"
#include "base/strings/string16.h"
#include "ui/events/events_export.h"
#include "ui/gfx/geometry/point_conversions.h"

namespace gfx {
class PointF;
}

namespace ui {

// Event class used to carry the info from Java DragEvent through native.
// All coordinates are in DIPs.
class EVENTS_EXPORT DragEventAndroid {
 public:
  DragEventAndroid(JNIEnv* env,
                   int action,
                   const gfx::PointF& location,
                   const gfx::PointF& screen_location,
                   const std::vector<base::string16>& mime_types,
                   jstring content);
  ~DragEventAndroid();

  int action() const { return action_; }
  const gfx::PointF& location_f() const { return location_; }
  const gfx::PointF& screen_location_f() const { return screen_location_; }
  const std::vector<base::string16>& mime_types() const { return mime_types_; }

  const gfx::Point GetLocation() const;
  const gfx::Point GetScreenLocation() const;
  base::android::ScopedJavaLocalRef<jstring> GetJavaContent() const;

  // Creates a new DragEventAndroid instance different from |this| only by
  // its location.
  std::unique_ptr<DragEventAndroid> CreateFor(
      const gfx::PointF& new_location) const;

 private:
  int action_;
  // Location relative to the view which the event is targeted.
  gfx::PointF location_;
  // Location relative to the screen coordinate.
  gfx::PointF screen_location_;
  const std::vector<base::string16>& mime_types_;
  // The Java reference to the drop content to avoid unnecessary copying.
  base::android::ScopedJavaGlobalRef<jstring> content_;

  DISALLOW_COPY_AND_ASSIGN(DragEventAndroid);
};

}  // namespace ui

#endif  // UI_EVENTS_ANDROID_DRAG_EVENT_ANDROID_H_