content/browser/web_contents/web_drag_utils_win.cc

   1 // Copyright (c) 2010 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 "content/browser/web_contents/web_drag_utils_win.h"
   6
   7 #include <oleidl.h>
   8 #include "base/logging.h"
   9
  10 using blink::WebDragOperation;
  11 using blink::WebDragOperationsMask;
  12 using blink::WebDragOperationNone;
  13 using blink::WebDragOperationCopy;
  14 using blink::WebDragOperationLink;
  15 using blink::WebDragOperationMove;
  16 using blink::WebDragOperationGeneric;
  17
  18 namespace content {
  19
  20 WebDragOperation WinDragOpToWebDragOp(DWORD effect) {
  21   DCHECK(effect == DROPEFFECT_NONE || effect == DROPEFFECT_COPY ||
  22          effect == DROPEFFECT_LINK || effect == DROPEFFECT_MOVE);
  23
  24   return WinDragOpMaskToWebDragOpMask(effect);
  25 }
  26
  27 WebDragOperationsMask WinDragOpMaskToWebDragOpMask(DWORD effects) {
  28   WebDragOperationsMask ops = WebDragOperationNone;
  29   if (effects & DROPEFFECT_COPY)
  30     ops = static_cast<WebDragOperationsMask>(ops | WebDragOperationCopy);
  31   if (effects & DROPEFFECT_LINK)
  32     ops = static_cast<WebDragOperationsMask>(ops | WebDragOperationLink);
  33   if (effects & DROPEFFECT_MOVE)
  34     ops = static_cast<WebDragOperationsMask>(ops | WebDragOperationMove |
  35                                              WebDragOperationGeneric);
  36   return ops;
  37 }
  38
  39 DWORD WebDragOpToWinDragOp(WebDragOperation op) {
  40   DCHECK(op == WebDragOperationNone ||
  41          op == WebDragOperationCopy ||
  42          op == WebDragOperationLink ||
  43          op == WebDragOperationMove ||
  44          op == (WebDragOperationMove | WebDragOperationGeneric));
  45
  46   return WebDragOpMaskToWinDragOpMask(op);
  47 }
  48
  49 DWORD WebDragOpMaskToWinDragOpMask(WebDragOperationsMask ops) {
  50   DWORD win_ops = DROPEFFECT_NONE;
  51   if (ops & WebDragOperationCopy)
  52     win_ops |= DROPEFFECT_COPY;
  53   if (ops & WebDragOperationLink)
  54     win_ops |= DROPEFFECT_LINK;
  55   if (ops & (WebDragOperationMove | WebDragOperationGeneric))
  56     win_ops |= DROPEFFECT_MOVE;
  57   return win_ops;
  58 }
  59
  60 }  // namespace content