Get drag and drop working for win aura.

ui/views/controls/webview/webview.cc

 // Copyright (c) 2012 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 "ui/views/controls/webview/webview.h"
 
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/render_widget_host_view.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_view.h"
 #include "ipc/ipc_message.h"
 #include "ui/base/accessibility/accessibility_types.h"
 #include "ui/base/accessibility/accessible_view_state.h"
 #include "ui/base/events/event.h"
 #include "ui/views/controls/native/native_view_host.h"
 #include "ui/views/focus/focus_manager.h"
 #include "ui/views/views_delegate.h"
 
+#if defined(USE_AURA)
+#include "ui/aura/client/drag_drop_client.h"
+#include "ui/aura/client/drag_drop_delegate.h"
+#endif
+
 namespace views {
 
 // static
 const char WebView::kViewClassName[] =
     "ui/views/WebView";
 
 ////////////////////////////////////////////////////////////////////////////////
 // WebView, public:
 
 WebView::WebView(content::BrowserContext* browser_context)
@@ skipping 109 matching lines @@
   return View::GetNativeViewAccessible();
 }
 
 gfx::Size WebView::GetPreferredSize() {
   if (preferred_size_ == gfx::Size())
     return View::GetPreferredSize();
   else
     return preferred_size_;
 }
 
+#if defined(USE_AURA)
+bool WebView::CanDrop(const ui::OSExchangeData& data) {
+  return true;
+}
+
+void WebView::OnDragEntered(const ui::DropTargetEvent& event) {
+  aura::Window* window = web_contents_->GetView()->GetContentNativeView();
+  aura::client::DragDropDelegate* dnd_delegate =
+      aura::client::GetDragDropDelegate(window);
+  if (dnd_delegate)
+    dnd_delegate->OnDragEntered(event);
+}
+
+int WebView::OnDragUpdated(const ui::DropTargetEvent& event) {
+  aura::Window* window = web_contents_->GetView()->GetContentNativeView();
+  aura::client::DragDropDelegate* dnd_delegate =
+      aura::client::GetDragDropDelegate(window);
+  if (dnd_delegate)
+    return dnd_delegate->OnDragUpdated(event);
+  return ui::DragDropTypes::DRAG_NONE;
+}
+
+void WebView::OnDragExited() {
+  aura::Window* window = web_contents_->GetView()->GetContentNativeView();
+  aura::client::DragDropDelegate* dnd_delegate =
+      aura::client::GetDragDropDelegate(window);
+  if (dnd_delegate)
+    dnd_delegate->OnDragExited();
+}
+
+int WebView::OnPerformDrop(const ui::DropTargetEvent& event) {
+  aura::Window* window = web_contents_->GetView()->GetContentNativeView();
+  aura::client::DragDropDelegate* dnd_delegate =
+      aura::client::GetDragDropDelegate(window);
+  if (dnd_delegate)
+    return dnd_delegate->OnPerformDrop(event);
+  return ui::DragDropTypes::DRAG_NONE;
+}
+
+#endif
+
 ////////////////////////////////////////////////////////////////////////////////
 // WebView, content::NotificationObserver implementation:
 
 void WebView::Observe(int type,
                       const content::NotificationSource& source,
                       const content::NotificationDetails& details) {
   if (type == content::NOTIFICATION_RENDER_VIEW_HOST_CHANGED) {
     std::pair<content::RenderViewHost*, content::RenderViewHost*>*
         switched_details =
             content::Details<std::pair<content::RenderViewHost*,
@@ skipping 91 matching lines @@
     return content::WebContents::Create(browser_context,
                                         site_instance,
                                         MSG_ROUTING_NONE,
                                         NULL);
   }
 
   return contents;
 }
 
 }  // namespace views