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      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 "chrome/browser/tab_contents/web_drag_utils_win.h"
      6 
      7 #include <oleidl.h>
      8 #include "base/logging.h"
      9 
     10 using WebKit::WebDragOperation;
     11 using WebKit::WebDragOperationsMask;
     12 using WebKit::WebDragOperationNone;
     13 using WebKit::WebDragOperationCopy;
     14 using WebKit::WebDragOperationLink;
     15 using WebKit::WebDragOperationMove;
     16 using WebKit::WebDragOperationGeneric;
     17 
     18 namespace web_drag_utils_win {
     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 web_drag_utils_win
     61 
     62