Move BaseDropTarget and BaseDragSource from base to app/win. Remove the "Base" class name prefix and put in the app::win namespace.

TEST=none
BUG=none
Review URL: http://codereview.chromium.org/3822007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@62900 0039d316-1c4b-4281-b951-d872f2087c98

5 files changed, 0 insertions, 421 deletions

diff --git a/base/base.gypi b/base/base.gypi
index b449a89..b90c033 100644
--- a/base/base.gypi
+++ b/base/base.gypi
@@ -426,10 +426,6 @@
           'auto_reset.h',
           'base64.cc',
           'base64.h',
-          'base_drag_source.cc',
-          'base_drag_source.h',
-          'base_drop_target.cc',
-          'base_drop_target.h',
           'data_pack.cc',
           'event_recorder.cc',
           'event_recorder.h',
diff --git a/base/base_drag_source.cc b/base/base_drag_source.cc
deleted file mode 100644
index 9b335a7..0000000
--- a/base/base_drag_source.cc
+++ /dev/null
@@ -1,61 +0,0 @@
-// Copyright (c) 2006-2008 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 "base/base_drag_source.h"
-
-///////////////////////////////////////////////////////////////////////////////
-// BaseDragSource, public:
-
-BaseDragSource::BaseDragSource() : cancel_drag_(false) {
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// BaseDragSource, IDropSource implementation:
-
-HRESULT BaseDragSource::QueryContinueDrag(BOOL escape_pressed,
-                                          DWORD key_state) {
-  if (cancel_drag_)
-    return DRAGDROP_S_CANCEL;
-
-  if (escape_pressed) {
-    OnDragSourceCancel();
-    return DRAGDROP_S_CANCEL;
-  }
-
-  if (!(key_state & MK_LBUTTON)) {
-    OnDragSourceDrop();
-    return DRAGDROP_S_DROP;
-  }
-
-  OnDragSourceMove();
-  return S_OK;
-}
-
-HRESULT BaseDragSource::GiveFeedback(DWORD effect) {
-  return DRAGDROP_S_USEDEFAULTCURSORS;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// BaseDragSource, IUnknown implementation:
-
-HRESULT BaseDragSource::QueryInterface(const IID& iid, void** object) {
-  *object = NULL;
-  if (IsEqualIID(iid, IID_IUnknown) || IsEqualIID(iid, IID_IDropSource)) {
-    *object = this;
-  } else {
-    return E_NOINTERFACE;
-  }
-  AddRef();
-  return S_OK;
-}
-
-ULONG BaseDragSource::AddRef() {
-  base::RefCountedThreadSafe<BaseDragSource>::AddRef();
-  return 0;
-}
-
-ULONG BaseDragSource::Release() {
-  base::RefCountedThreadSafe<BaseDragSource>::Release();
-  return 0;
-}
diff --git a/base/base_drag_source.h b/base/base_drag_source.h
deleted file mode 100644
index c8fcc7e..0000000
--- a/base/base_drag_source.h
+++ /dev/null
@@ -1,57 +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.
-
-#ifndef BASE_BASE_DRAG_SOURCE_H_
-#define BASE_BASE_DRAG_SOURCE_H_
-#pragma once
-
-#include <objidl.h>
-
-#include "base/basictypes.h"
-#include "base/ref_counted.h"
-
-///////////////////////////////////////////////////////////////////////////////
-//
-// BaseDragSource
-//
-//  A base IDropSource implementation. Handles notifications sent by an active
-//  drag-drop operation as the user mouses over other drop targets on their
-//  system. This object tells Windows whether or not the drag should continue,
-//  and supplies the appropriate cursors.
-//
-class BaseDragSource : public IDropSource,
-                       public base::RefCountedThreadSafe<BaseDragSource> {
- public:
-  BaseDragSource();
-  virtual ~BaseDragSource() { }
-
-  // Stop the drag operation at the next chance we get.  This doesn't
-  // synchronously stop the drag (since Windows is controlling that),
-  // but lets us tell Windows to cancel the drag the next chance we get.
-  void CancelDrag() {
-    cancel_drag_ = true;
-  }
-
-  // IDropSource implementation:
-  HRESULT __stdcall QueryContinueDrag(BOOL escape_pressed, DWORD key_state);
-  HRESULT __stdcall GiveFeedback(DWORD effect);
-
-  // IUnknown implementation:
-  HRESULT __stdcall QueryInterface(const IID& iid, void** object);
-  ULONG __stdcall AddRef();
-  ULONG __stdcall Release();
-
- protected:
-  virtual void OnDragSourceCancel() { }
-  virtual void OnDragSourceDrop() { }
-  virtual void OnDragSourceMove() { }
-
- private:
-  // Set to true if we want to cancel the drag operation.
-  bool cancel_drag_;
-
-  DISALLOW_COPY_AND_ASSIGN(BaseDragSource);
-};
-
-#endif  // BASE_BASE_DRAG_SOURCE_H_
diff --git a/base/base_drop_target.cc b/base/base_drop_target.cc
deleted file mode 100644
index 1ee878f..0000000
--- a/base/base_drop_target.cc
+++ /dev/null
@@ -1,170 +0,0 @@
-// Copyright (c) 2006-2008 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 "base/base_drop_target.h"
-
-#include <shlobj.h>
-
-#include "base/logging.h"
-
-///////////////////////////////////////////////////////////////////////////////
-
-IDropTargetHelper* BaseDropTarget::cached_drop_target_helper_ = NULL;
-int32 BaseDropTarget::drag_identity_ = 0;
-
-BaseDropTarget::BaseDropTarget(HWND hwnd)
-    : hwnd_(hwnd),
-      suspended_(false),
-      ref_count_(0) {
-  DCHECK(hwnd);
-  HRESULT result = RegisterDragDrop(hwnd, this);
-  DCHECK(SUCCEEDED(result));
-}
-
-BaseDropTarget::~BaseDropTarget() {
-}
-
-// static
-IDropTargetHelper* BaseDropTarget::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_;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// BaseDropTarget, IDropTarget implementation:
-
-HRESULT BaseDropTarget::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 BaseDropTarget::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 BaseDropTarget::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 BaseDropTarget::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;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// BaseDropTarget, IUnknown implementation:
-
-HRESULT BaseDropTarget::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 BaseDropTarget::AddRef() {
-  return ++ref_count_;
-}
-
-ULONG BaseDropTarget::Release() {
-  if (--ref_count_ == 0) {
-    delete this;
-    return 0U;
-  }
-  return ref_count_;
-}
-
-DWORD BaseDropTarget::OnDragEnter(IDataObject* data_object,
-                                  DWORD key_state,
-                                  POINT cursor_position,
-                                  DWORD effect) {
-  return DROPEFFECT_NONE;
-}
-
-DWORD BaseDropTarget::OnDragOver(IDataObject* data_object,
-                                 DWORD key_state,
-                                 POINT cursor_position,
-                                 DWORD effect) {
-  return DROPEFFECT_NONE;
-}
-
-void BaseDropTarget::OnDragLeave(IDataObject* data_object) {
-}
-
-DWORD BaseDropTarget::OnDrop(IDataObject* data_object,
-                             DWORD key_state,
-                             POINT cursor_position,
-                             DWORD effect) {
-  return DROPEFFECT_NONE;
-}
diff --git a/base/base_drop_target.h b/base/base_drop_target.h
deleted file mode 100644
index de66ce2..0000000
--- a/base/base_drop_target.h
+++ /dev/null
@@ -1,129 +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.
-
-#ifndef BASE_BASE_DROP_TARGET_H_
-#define BASE_BASE_DROP_TARGET_H_
-#pragma once
-
-#include <objidl.h>
-
-#include "base/ref_counted.h"
-
-struct IDropTargetHelper;
-
-// A DropTarget implementation that takes care of the nitty gritty
-// of dnd. While this class is concrete, subclasses will most likely
-// want to override various OnXXX methods.
-//
-// Because BaseDropTarget is ref counted you shouldn't delete it directly,
-// rather wrap it in a scoped_refptr. Be sure and invoke RevokeDragDrop(m_hWnd)
-// before the HWND is deleted too.
-//
-// This class is meant to be used in a STA and is not multithread-safe.
-class BaseDropTarget : public IDropTarget {
- public:
-  // Create a new BaseDropTarget associating it with the given HWND.
-  explicit BaseDropTarget(HWND hwnd);
-  virtual ~BaseDropTarget();
-
-  // When suspended is set to |true|, the drop target does not receive drops
-  // from drags initiated within the owning HWND.
-  bool suspended() const { return suspended_; }
-  void set_suspended(bool suspended) { suspended_ = suspended; }
-
-  // IDropTarget implementation:
-  HRESULT __stdcall DragEnter(IDataObject* data_object,
-                              DWORD key_state,
-                              POINTL cursor_position,
-                              DWORD* effect);
-  HRESULT __stdcall DragOver(DWORD key_state,
-                             POINTL cursor_position,
-                             DWORD* effect);
-  HRESULT __stdcall DragLeave();
-  HRESULT __stdcall Drop(IDataObject* data_object,
-                         DWORD key_state,
-                         POINTL cursor_position,
-                         DWORD* effect);
-
-  // IUnknown implementation:
-  HRESULT __stdcall QueryInterface(const IID& iid, void** object);
-  ULONG __stdcall AddRef();
-  ULONG __stdcall Release();
-
- protected:
-  // Returns the hosting HWND.
-  HWND GetHWND() { return hwnd_; }
-
-  // Invoked when the cursor first moves over the hwnd during a dnd session.
-  // This should return a bitmask of the supported drop operations:
-  // DROPEFFECT_NONE, DROPEFFECT_COPY, DROPEFFECT_LINK and/or
-  // DROPEFFECT_MOVE.
-  virtual DWORD OnDragEnter(IDataObject* data_object,
-                            DWORD key_state,
-                            POINT cursor_position,
-                            DWORD effect);
-
-  // Invoked when the cursor moves over the window during a dnd session.
-  // This should return a bitmask of the supported drop operations:
-  // DROPEFFECT_NONE, DROPEFFECT_COPY, DROPEFFECT_LINK and/or
-  // DROPEFFECT_MOVE.
-  virtual DWORD OnDragOver(IDataObject* data_object,
-                           DWORD key_state,
-                           POINT cursor_position,
-                           DWORD effect);
-
-  // Invoked when the cursor moves outside the bounds of the hwnd during a
-  // dnd session.
-  virtual void OnDragLeave(IDataObject* data_object);
-
-  // Invoked when the drop ends on the window. This should return the operation
-  // that was taken.
-  virtual DWORD OnDrop(IDataObject* data_object,
-                       DWORD key_state,
-                       POINT cursor_position,
-                       DWORD effect);
-
-  // Return the drag identity.
-  static int32 GetDragIdentity() { return drag_identity_; }
-
- private:
-  // Returns the cached drop helper, creating one if necessary. The returned
-  // object is not addrefed. May return NULL if the object couldn't be created.
-  static IDropTargetHelper* DropHelper();
-
-  // The data object currently being dragged over this drop target.
-  scoped_refptr<IDataObject> current_data_object_;
-
-  // A helper object that is used to provide drag image support while the mouse
-  // is dragging over the content area.
-  //
-  // DO NOT ACCESS DIRECTLY! Use DropHelper() instead, which will lazily create
-  // this if it doesn't exist yet. This object can take tens of milliseconds to
-  // create, and we don't want to block any window opening for this, especially
-  // since often, DnD will never be used. Instead, we force this penalty to the
-  // first time it is actually used.
-  static IDropTargetHelper* cached_drop_target_helper_;
-
-  // The drag identity (id). An up-counter that increases when the cursor first
-  // moves over the HWND in a DnD session (OnDragEnter). 0 is reserved to mean
-  // the "no/unknown" identity, and is used for initialization. The identity is
-  // sent to the renderer in drag enter notifications. Note: the identity value
-  // is passed over the renderer NPAPI interface to gears, so use int32 instead
-  // of int here.
-  static int32 drag_identity_;
-
-  // The HWND of the source. This HWND is used to determine coordinates for
-  // mouse events that are sent to the renderer notifying various drag states.
-  HWND hwnd_;
-
-  // Whether or not we are currently processing drag notifications for drags
-  // initiated in this window.
-  bool suspended_;
-
-  LONG ref_count_;
-
-  DISALLOW_COPY_AND_ASSIGN(BaseDropTarget);
-};
-
-#endif  // BASE_BASE_DROP_TARGET_H_