| // Copyright (c) 2012 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 "ui/views/widget/desktop_aura/desktop_drag_drop_client_win.h" |
| |
| #include "base/metrics/histogram_macros.h" |
| #include "base/tracked_objects.h" |
| #include "ui/base/dragdrop/drag_drop_types.h" |
| #include "ui/base/dragdrop/drag_source_win.h" |
| #include "ui/base/dragdrop/drop_target_event.h" |
| #include "ui/base/dragdrop/os_exchange_data_provider_win.h" |
| #include "ui/views/widget/desktop_aura/desktop_drop_target_win.h" |
| #include "ui/views/widget/desktop_aura/desktop_window_tree_host_win.h" |
| |
| namespace views { |
| |
| DesktopDragDropClientWin::DesktopDragDropClientWin( |
| aura::Window* root_window, |
| HWND window) |
| : drag_drop_in_progress_(false), |
| drag_operation_(0), |
| weak_factory_(this) { |
| drop_target_ = new DesktopDropTargetWin(root_window, window); |
| } |
| |
| DesktopDragDropClientWin::~DesktopDragDropClientWin() { |
| if (drag_drop_in_progress_) |
| DragCancel(); |
| } |
| |
| int DesktopDragDropClientWin::StartDragAndDrop( |
| const ui::OSExchangeData& data, |
| aura::Window* root_window, |
| aura::Window* source_window, |
| const gfx::Point& screen_location, |
| int operation, |
| ui::DragDropTypes::DragEventSource source) { |
| drag_drop_in_progress_ = true; |
| drag_operation_ = operation; |
| |
| base::WeakPtr<DesktopDragDropClientWin> alive(weak_factory_.GetWeakPtr()); |
| |
| drag_source_ = Microsoft::WRL::Make<ui::DragSourceWin>(); |
| Microsoft::WRL::ComPtr<ui::DragSourceWin> drag_source_copy = drag_source_; |
| drag_source_copy->set_data(&data); |
| ui::OSExchangeDataProviderWin::GetDataObjectImpl(data) |
| ->set_in_drag_loop(true); |
| |
| DWORD effect; |
| |
| UMA_HISTOGRAM_ENUMERATION("Event.DragDrop.Start", source, |
| ui::DragDropTypes::DRAG_EVENT_SOURCE_COUNT); |
| |
| // Use task stopwatch to exclude the drag-drop time current task, if any. |
| tracked_objects::TaskStopwatch stopwatch; |
| stopwatch.Start(); |
| HRESULT result = DoDragDrop( |
| ui::OSExchangeDataProviderWin::GetIDataObject(data), drag_source_.Get(), |
| ui::DragDropTypes::DragOperationToDropEffect(operation), &effect); |
| stopwatch.Stop(); |
| drag_source_copy->set_data(nullptr); |
| |
| if (alive) |
| drag_drop_in_progress_ = false; |
| |
| if (result != DRAGDROP_S_DROP) |
| effect = DROPEFFECT_NONE; |
| |
| int drag_operation = ui::DragDropTypes::DropEffectToDragOperation(effect); |
| |
| if (drag_operation == ui::DragDropTypes::DRAG_NONE) { |
| UMA_HISTOGRAM_ENUMERATION("Event.DragDrop.Cancel", source, |
| ui::DragDropTypes::DRAG_EVENT_SOURCE_COUNT); |
| } else { |
| UMA_HISTOGRAM_ENUMERATION("Event.DragDrop.Drop", source, |
| ui::DragDropTypes::DRAG_EVENT_SOURCE_COUNT); |
| } |
| |
| return drag_operation; |
| } |
| |
| void DesktopDragDropClientWin::DragUpdate(aura::Window* target, |
| const ui::LocatedEvent& event) { |
| } |
| |
| void DesktopDragDropClientWin::Drop(aura::Window* target, |
| const ui::LocatedEvent& event) { |
| } |
| |
| void DesktopDragDropClientWin::DragCancel() { |
| drag_source_->CancelDrag(); |
| drag_operation_ = 0; |
| } |
| |
| bool DesktopDragDropClientWin::IsDragDropInProgress() { |
| return drag_drop_in_progress_; |
| } |
| |
| void DesktopDragDropClientWin::OnNativeWidgetDestroying(HWND window) { |
| if (drop_target_.get()) { |
| RevokeDragDrop(window); |
| drop_target_ = NULL; |
| } |
| } |
| |
| } // namespace views |