Home | History | Annotate | Download | only in desktop_aura 
      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "ui/views/widget/desktop_aura/desktop_drag_drop_client_win.h"
      6 
      7 #include "ui/base/dragdrop/drag_drop_types.h"
      8 #include "ui/base/dragdrop/drag_source_win.h"
      9 #include "ui/base/dragdrop/drop_target_event.h"
     10 #include "ui/base/dragdrop/os_exchange_data_provider_win.h"
     11 #include "ui/views/widget/desktop_aura/desktop_drop_target_win.h"
     12 #include "ui/views/widget/desktop_aura/desktop_window_tree_host_win.h"
     13 
     14 namespace views {
     15 
     16 DesktopDragDropClientWin::DesktopDragDropClientWin(
     17     aura::Window* root_window,
     18     HWND window)
     19     : drag_drop_in_progress_(false),
     20       drag_operation_(0) {
     21   drop_target_ = new DesktopDropTargetWin(root_window, window);
     22 }
     23 
     24 DesktopDragDropClientWin::~DesktopDragDropClientWin() {
     25 }
     26 
     27 int DesktopDragDropClientWin::StartDragAndDrop(
     28     const ui::OSExchangeData& data,
     29     aura::Window* root_window,
     30     aura::Window* source_window,
     31     const gfx::Point& root_location,
     32     int operation,
     33     ui::DragDropTypes::DragEventSource source) {
     34   drag_drop_in_progress_ = true;
     35   drag_operation_ = operation;
     36 
     37   drag_source_ = new ui::DragSourceWin;
     38   DWORD effect;
     39   HRESULT result = DoDragDrop(
     40       ui::OSExchangeDataProviderWin::GetIDataObject(data),
     41       drag_source_,
     42       ui::DragDropTypes::DragOperationToDropEffect(operation),
     43       &effect);
     44 
     45   drag_drop_in_progress_ = false;
     46 
     47   if (result != DRAGDROP_S_DROP)
     48     effect = DROPEFFECT_NONE;
     49 
     50   return ui::DragDropTypes::DropEffectToDragOperation(effect);
     51 }
     52 
     53 void DesktopDragDropClientWin::DragUpdate(aura::Window* target,
     54                                           const ui::LocatedEvent& event) {
     55 }
     56 
     57 void DesktopDragDropClientWin::Drop(aura::Window* target,
     58                                     const ui::LocatedEvent& event) {
     59 }
     60 
     61 void DesktopDragDropClientWin::DragCancel() {
     62   drag_source_->CancelDrag();
     63   drag_operation_ = 0;
     64 }
     65 
     66 bool DesktopDragDropClientWin::IsDragDropInProgress() {
     67   return drag_drop_in_progress_;
     68 }
     69 
     70 void DesktopDragDropClientWin::OnNativeWidgetDestroying(HWND window) {
     71   if (drop_target_.get()) {
     72     RevokeDragDrop(window);
     73     drop_target_ = NULL;
     74   }
     75 }
     76 
     77 }  // namespace views
     78