public:

typedef cef_drag_operations_mask_t DragOperationsMask;

///

// Called when an external drag event enters the browser window. |dragData|

// contains the drag event data and |mask| represents the type of drag

// operation. Return false for default drag handling behavior or true to

// cancel the drag event.

///

/*--cef()--*/

virtual bool OnDragEnter(CefRefPtr<CefBrowser> browser,

CefRefPtr<CefDragData> dragData,

DragOperationsMask mask) { return false; }

///

// Called whenever draggable regions for the browser window change. These can

// be specified using the '-webkit-app-region: drag/no-drag' CSS-property. If

// draggable regions are never defined in a document this method will also

// never be called. If the last draggable region is removed from a document

// this method will be called with an empty vector.

///

/*--cef()--*/

virtual void OnDraggableRegionsChanged(

CefRefPtr<CefBrowser> browser,

const std::vector<CefDraggableRegion>& regions) {}