Move more dnd related files to ui/base

app/win/drop_target.cc

Index: app/win/drop_target.cc
===================================================================
--- app/win/drop_target.cc	(revision 71798)
+++ app/win/drop_target.cc	(working copy)
@@ -1,174 +0,0 @@
-// Copyright (c) 2010 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 "app/win/drop_target.h"
-
-#include <shlobj.h>
-
-#include "base/logging.h"
-
-namespace app {
-namespace win {
-
-IDropTargetHelper* DropTarget::cached_drop_target_helper_ = NULL;
-int32 DropTarget::drag_identity_ = 0;
-
-DropTarget::DropTarget(HWND hwnd)
-    : hwnd_(hwnd),
-      suspended_(false),
-      ref_count_(0) {
-  DCHECK(hwnd);
-  HRESULT result = RegisterDragDrop(hwnd, this);
-  DCHECK(SUCCEEDED(result));
-}
-
-DropTarget::~DropTarget() {
-}
-
-// static
-IDropTargetHelper* DropTarget::DropHelper() {
-  if (!cached_drop_target_helper_) {
-    CoCreateInstance(CLSID_DragDropHelper, 0, CLSCTX_INPROC_SERVER,
-                     IID_IDropTargetHelper,
-                     reinterpret_cast<void**>(&cached_drop_target_helper_));
-  }
-  return cached_drop_target_helper_;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// DropTarget, IDropTarget implementation:
-
-HRESULT DropTarget::DragEnter(IDataObject* data_object,
-                                  DWORD key_state,
-                                  POINTL cursor_position,
-                                  DWORD* effect) {
-  // Tell the helper that we entered so it can update the drag image.
-  IDropTargetHelper* drop_helper = DropHelper();
-  if (drop_helper) {
-    drop_helper->DragEnter(GetHWND(), data_object,
-                           reinterpret_cast<POINT*>(&cursor_position), *effect);
-  }
-
-  // You can't drag and drop within the same HWND.
-  if (suspended_) {
-    *effect = DROPEFFECT_NONE;
-    return S_OK;
-  }
-
-  // Update the drag identity, skipping 0.
-  if (++drag_identity_ == 0)
-    ++drag_identity_;
-
-  current_data_object_ = data_object;
-  POINT screen_pt = { cursor_position.x, cursor_position.y };
-  *effect = OnDragEnter(current_data_object_, key_state, screen_pt, *effect);
-  return S_OK;
-}
-
-HRESULT DropTarget::DragOver(DWORD key_state,
-                                 POINTL cursor_position,
-                                 DWORD* effect) {
-  // Tell the helper that we moved over it so it can update the drag image.
-  IDropTargetHelper* drop_helper = DropHelper();
-  if (drop_helper)
-    drop_helper->DragOver(reinterpret_cast<POINT*>(&cursor_position), *effect);
-
-  if (suspended_) {
-    *effect = DROPEFFECT_NONE;
-    return S_OK;
-  }
-
-  POINT screen_pt = { cursor_position.x, cursor_position.y };
-  *effect = OnDragOver(current_data_object_, key_state, screen_pt, *effect);
-  return S_OK;
-}
-
-HRESULT DropTarget::DragLeave() {
-  // Tell the helper that we moved out of it so it can update the drag image.
-  IDropTargetHelper* drop_helper = DropHelper();
-  if (drop_helper)
-    drop_helper->DragLeave();
-
-  if (suspended_)
-    return S_OK;
-
-  OnDragLeave(current_data_object_);
-
-  current_data_object_ = NULL;
-  return S_OK;
-}
-
-HRESULT DropTarget::Drop(IDataObject* data_object,
-                             DWORD key_state,
-                             POINTL cursor_position,
-                             DWORD* effect) {
-  // Tell the helper that we dropped onto it so it can update the drag image.
-  IDropTargetHelper* drop_helper = DropHelper();
-  if (drop_helper) {
-    drop_helper->Drop(current_data_object_,
-                      reinterpret_cast<POINT*>(&cursor_position), *effect);
-  }
-
-  if (suspended_) {
-    *effect = DROPEFFECT_NONE;
-    return S_OK;
-  }
-
-  POINT screen_pt = { cursor_position.x, cursor_position.y };
-  *effect = OnDrop(current_data_object_, key_state, screen_pt, *effect);
-  return S_OK;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// DropTarget, IUnknown implementation:
-
-HRESULT DropTarget::QueryInterface(const IID& iid, void** object) {
-  *object = NULL;
-  if (IsEqualIID(iid, IID_IUnknown) || IsEqualIID(iid, IID_IDropTarget)) {
-    *object = this;
-  } else {
-    return E_NOINTERFACE;
-  }
-  AddRef();
-  return S_OK;
-}
-
-ULONG DropTarget::AddRef() {
-  return ++ref_count_;
-}
-
-ULONG DropTarget::Release() {
-  if (--ref_count_ == 0) {
-    delete this;
-    return 0U;
-  }
-  return ref_count_;
-}
-
-DWORD DropTarget::OnDragEnter(IDataObject* data_object,
-                              DWORD key_state,
-                              POINT cursor_position,
-                              DWORD effect) {
-  return DROPEFFECT_NONE;
-}
-
-DWORD DropTarget::OnDragOver(IDataObject* data_object,
-                             DWORD key_state,
-                             POINT cursor_position,
-                             DWORD effect) {
-  return DROPEFFECT_NONE;
-}
-
-void DropTarget::OnDragLeave(IDataObject* data_object) {
-}
-
-DWORD DropTarget::OnDrop(IDataObject* data_object,
-                         DWORD key_state,
-                         POINT cursor_position,
-                         DWORD effect) {
-  return DROPEFFECT_NONE;
-}
-
-}  // namespace win
-}  // namespace app