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// Copyright 2016 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.
#import <Cocoa/Cocoa.h>
#include "base/callback.h"
#import "base/mac/scoped_nsobject.h"
#include "base/macros.h"
#include "ui/base/dragdrop/drag_drop_types.h"
#include "ui/base/dragdrop/os_exchange_data.h"
#include "ui/views/views_export.h"
#include "ui/views/widget/drop_helper.h"
// This class acts as a bridge between NSPasteboardItem and OSExchangeData by
// implementing NSPasteboardItemDataProvider and writing data from
// OSExchangeData into the pasteboard.
@interface CocoaDragDropDataProvider : NSObject<NSPasteboardItemDataProvider>
- (id)initWithData:(const ui::OSExchangeData&)data;
namespace gfx {
class Point;
namespace views {
namespace test {
class DragDropClientMacTest;
class BridgedNativeWidget;
class View;
// Implements drag and drop on MacViews. This class acts as a bridge between
// the Views and native system's drag and drop. This class mimics
// DesktopDragDropClientAuraX11.
class VIEWS_EXPORT DragDropClientMac {
explicit DragDropClientMac(BridgedNativeWidget* bridge, View* root_view);
// Initiates a drag and drop session. Returns the drag operation that was
// applied at the end of the drag drop session.
void StartDragAndDrop(View* view,
const ui::OSExchangeData& data,
int operation,
ui::DragDropTypes::DragEventSource source);
// Called when mouse is dragged during a drag and drop.
NSDragOperation DragUpdate(id<NSDraggingInfo>);
// Called when mouse is released during a drag and drop.
NSDragOperation Drop(id<NSDraggingInfo> sender);
// Called when the drag and drop session has ended.
void EndDrag();
// Called when mouse leaves the drop area.
void DragExit();
DropHelper* drop_helper() { return &drop_helper_; }
friend class test::DragDropClientMacTest;
// Converts the given NSPoint to the coordinate system in Views.
gfx::Point LocationInView(NSPoint point) const;
// Provides the data for the drag and drop session.
base::scoped_nsobject<CocoaDragDropDataProvider> data_source_;
// Used to handle drag and drop with Views.
DropHelper drop_helper_;
// The drag and drop operation.
int operation_;
// The bridge between the content view and the drag drop client.
BridgedNativeWidget* bridge_; // Weak. Owns |this|.
// The closure for the drag and drop's run loop.
base::Closure quit_closure_;
// Whether |this| is the source of current dragging session.
bool is_drag_source_;
} // namespace views