Convert last batch of casts in fwl.

xfa/include/fwl/core/fwl_note.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef _FWL_NOTE_H
 #define _FWL_NOTE_H
 class IFWL_Target;
 class IFWL_Widget;
@@ skipping 322 matching lines @@
       IFWL_Widget* pListener,
       IFWL_Widget* pEventSource = NULL,
       FX_DWORD dwFilter = FWL_EVENT_ALL_MASK) = 0;
   virtual FWL_ERR UnregisterEventTarget(IFWL_Widget* pListener) = 0;
   virtual void ClearEventTargets(FX_BOOL bRemoveAll) = 0;
   virtual int32_t GetQueueMaxSize() const = 0;
   virtual FWL_ERR SetQueueMaxSize(const int32_t size) = 0;
   virtual IFWL_NoteThread* GetOwnerThread() const = 0;
   virtual FWL_ERR PushNoteLoop(IFWL_NoteLoop* pNoteLoop) = 0;
   virtual IFWL_NoteLoop* PopNoteLoop() = 0;
+  virtual IFWL_Widget* GetFocus() = 0;

[Tom Sepez, 2015/12/10 22:40:35]

Note: Prevent casting to concrete class later on ...

   virtual FX_BOOL SetFocus(IFWL_Widget* pFocus, FX_BOOL bNotify = FALSE) = 0;
+  virtual void SetGrab(IFWL_Widget* pGrab, FX_BOOL bSet) = 0;
   virtual FWL_ERR Run() = 0;
 };
 IFWL_Widget* FWL_GetCurrentThreadModalWidget(IFWL_NoteThread* pNoteThread);
 class IFWL_NoteLoop {
  public:
   virtual ~IFWL_NoteLoop() {}
   virtual FX_BOOL PreProcessMessage(CFWL_Message* pMessage) = 0;
   virtual FWL_ERR Idle(int32_t count) = 0;
 };
 class IFWL_ToolTipTarget {
@@ skipping 11 matching lines @@
 };
 FWL_ERR FWL_AddToolTipTarget(IFWL_ToolTipTarget* pTarget);
 FWL_ERR FWL_RemoveToolTipTarget(IFWL_ToolTipTarget* pTarget);
 FWL_ERR FWL_SetToolTipInitialDelay(int32_t iDelayTime);
 FWL_ERR FWL_SetToolTipAutoPopDelay(int32_t iDelayTime);
 typedef FX_BOOL (*FWLMessageHookCallback)(CFWL_Message* msg, void* info);
 FWL_ERR FWL_SetHook(IFWL_NoteDriver* driver,
                     FWLMessageHookCallback callback,
                     void* info);
 #endif