Split fwl/core class pt II.

xfa/fwl/core/cfwl_eventtarget.h

+// Copyright 2016 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 XFA_FWL_CORE_CFWL_EVENTTARGET_H_
+#define XFA_FWL_CORE_CFWL_EVENTTARGET_H_
+
+#include "core/fxcrt/fx_basic.h"
+#include "xfa/fwl/core/cfwl_event.h"
+
+class CFWL_Event;
+class IFWL_Widget;
+
+class CFWL_EventTarget {
+ public:
+  explicit CFWL_EventTarget(IFWL_Widget* pListener);
+  ~CFWL_EventTarget();
+
+  int32_t SetEventSource(IFWL_Widget* pSource,
+                         uint32_t dwFilter = FWL_EVENT_ALL_MASK);
+  bool ProcessEvent(CFWL_Event* pEvent);
+
+  bool IsInvalid() const { return m_bInvalid; }
+  void FlagInvalid() { m_bInvalid = true; }
+
+ private:
+  bool IsFilterEvent(CFWL_Event* pEvent, uint32_t dwFilter) const;
+
+  CFX_MapPtrTemplate<void*, uint32_t> m_eventSources;
+  IFWL_Widget* m_pListener;
+  bool m_bInvalid;
+};
+
+#endif  // XFA_FWL_CORE_CFWL_EVENTTARGET_H_