ui/views/widget/drop_target_win.cc

   1 // Copyright (c) 2011 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/drop_target_win.h"
   6
   7 #include "ui/base/dragdrop/drag_drop_types.h"
   8 #include "ui/base/dragdrop/os_exchange_data.h"
   9 #include "ui/base/dragdrop/os_exchange_data_provider_win.h"
  10 #include "ui/gfx/point.h"
  11 #include "ui/views/widget/root_view.h"
  12 #include "ui/views/widget/widget.h"
  13
  14 using ui::OSExchangeData;
  15 using ui::OSExchangeDataProviderWin;
  16
  17 namespace views {
  18
  19 DropTargetWin::DropTargetWin(internal::RootView* root_view)
  20     : ui::DropTargetWin(root_view->GetWidget()->GetNativeView()),
  21       helper_(root_view) {
  22 }
  23
  24 DropTargetWin::~DropTargetWin() {
  25 }
  26
  27 void DropTargetWin::ResetTargetViewIfEquals(View* view) {
  28   helper_.ResetTargetViewIfEquals(view);
  29 }
  30
  31 DWORD DropTargetWin::OnDragOver(IDataObject* data_object,
  32                                 DWORD key_state,
  33                                 POINT cursor_position,
  34                                 DWORD effect) {
  35   gfx::Point root_view_location(cursor_position.x, cursor_position.y);
  36   View::ConvertPointToTarget(NULL, helper_.root_view(), &root_view_location);
  37   OSExchangeData data(new OSExchangeDataProviderWin(data_object));
  38   int drop_operation =
  39       helper_.OnDragOver(data, root_view_location,
  40                          ui::DragDropTypes::DropEffectToDragOperation(effect));
  41   return ui::DragDropTypes::DragOperationToDropEffect(drop_operation);
  42 }
  43
  44 void DropTargetWin::OnDragLeave(IDataObject* data_object) {
  45   helper_.OnDragExit();
  46 }
  47
  48 DWORD DropTargetWin::OnDrop(IDataObject* data_object,
  49                             DWORD key_state,
  50                             POINT cursor_position,
  51                             DWORD effect) {
  52   gfx::Point root_view_location(cursor_position.x, cursor_position.y);
  53   View::ConvertPointToTarget(NULL, helper_.root_view(), &root_view_location);
  54
  55   OSExchangeData data(new OSExchangeDataProviderWin(data_object));
  56   int drop_operation = ui::DragDropTypes::DropEffectToDragOperation(effect);
  57   drop_operation = helper_.OnDragOver(data, root_view_location,
  58                                       drop_operation);
  59   drop_operation = helper_.OnDrop(data, root_view_location, drop_operation);
  60   return ui::DragDropTypes::DragOperationToDropEffect(drop_operation);
  61 }
  62
  63 }  // namespace views