Bookmark Manager Drag and Drop backend....

chrome/browser/tab_contents/web_drop_target_win.cc

 // Copyright (c) 2009 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 <windows.h>
 #include <shlobj.h>
 
 #include "chrome/browser/tab_contents/web_drop_target_win.h"
 
 #include "app/clipboard/clipboard_util_win.h"
@@ skipping 100 matching lines @@
 
   is_drop_target_ = true;
 
   POINT client_pt = cursor_position;
   ScreenToClient(GetHWND(), &client_pt);
   tab_contents_->render_view_host()->DragTargetDragEnter(drop_data,
       gfx::Point(client_pt.x, client_pt.y),
       gfx::Point(cursor_position.x, cursor_position.y),
       WebDragOperationCopy);  // FIXME(snej): Send actual operation
 
+  // This is non-null if tab_contents_ is showing an ExtensionDOMUI with
+  // support for (at the moment experimental) drag and drop extensions.
+  if (tab_contents_->GetBookmarkDragDelegate()) {
+    OSExchangeData os_exchange_data(new OSExchangeDataProviderWin(data_object));
+    tab_contents_->GetBookmarkDragDelegate()->OnDragEnter(&os_exchange_data);
+  }
+
   // We lie here and always return a DROPEFFECT because we don't want to
   // wait for the IPC call to return.
   return GetPreferredDropEffect(effect);
 }
 
 DWORD WebDropTarget::OnDragOver(IDataObject* data_object,
                                 DWORD key_state,
                                 POINT cursor_position,
                                 DWORD effect) {
   DCHECK(current_rvh_);
   if (current_rvh_ != tab_contents_->render_view_host())
     OnDragEnter(data_object, key_state, cursor_position, effect);
 
   if (tab_contents_->showing_interstitial_page())
     return interstitial_drop_target_->OnDragOver(data_object, effect);
 
   POINT client_pt = cursor_position;
   ScreenToClient(GetHWND(), &client_pt);
   tab_contents_->render_view_host()->DragTargetDragOver(
       gfx::Point(client_pt.x, client_pt.y),
       gfx::Point(cursor_position.x, cursor_position.y),
       WebDragOperationCopy);  // FIXME(snej): Send actual operation
 
+  if (tab_contents_->GetBookmarkDragDelegate()) {
+    OSExchangeData os_exchange_data(new OSExchangeDataProviderWin(data_object));
+    tab_contents_->GetBookmarkDragDelegate()->OnDragOver(&os_exchange_data);
+  }
+
   if (!is_drop_target_)
     return DROPEFFECT_NONE;
 
   return GetPreferredDropEffect(effect);
 }
 
 void WebDropTarget::OnDragLeave(IDataObject* data_object) {
   DCHECK(current_rvh_);
   if (current_rvh_ != tab_contents_->render_view_host())
     return;
 
   if (tab_contents_->showing_interstitial_page()) {
     interstitial_drop_target_->OnDragLeave(data_object);
   } else {
     tab_contents_->render_view_host()->DragTargetDragLeave();
   }
+
+  if (tab_contents_->GetBookmarkDragDelegate()) {
+    OSExchangeData os_exchange_data(new OSExchangeDataProviderWin(data_object));
+    tab_contents_->GetBookmarkDragDelegate()->OnDragLeave(&os_exchange_data);
+  }
 }
 
 DWORD WebDropTarget::OnDrop(IDataObject* data_object,
                             DWORD key_state,
                             POINT cursor_position,
                             DWORD effect) {
   DCHECK(current_rvh_);
   if (current_rvh_ != tab_contents_->render_view_host())
     OnDragEnter(data_object, key_state, cursor_position, effect);
 
   if (tab_contents_->showing_interstitial_page())
     interstitial_drop_target_->OnDragOver(data_object, effect);
 
   if (tab_contents_->showing_interstitial_page())
     return interstitial_drop_target_->OnDrop(data_object, effect);
 
   POINT client_pt = cursor_position;
   ScreenToClient(GetHWND(), &client_pt);
   tab_contents_->render_view_host()->DragTargetDrop(
       gfx::Point(client_pt.x, client_pt.y),
       gfx::Point(cursor_position.x, cursor_position.y));
 
+  if (tab_contents_->GetBookmarkDragDelegate()) {
+    OSExchangeData os_exchange_data(new OSExchangeDataProviderWin(data_object));
+    tab_contents_->GetBookmarkDragDelegate()->OnDrop(&os_exchange_data);
+  }
+
   current_rvh_ = NULL;
 
   // We lie and always claim that the drop operation didn't happen because we
   // don't want to wait for the renderer to respond.
   return DROPEFFECT_NONE;
 }