xfa/fxfa/cxfa_ffwidgethandler.h

// Copyright 2014 The PDFium Authors
// 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_FXFA_CXFA_FFWIDGETHANDLER_H_
#define XFA_FXFA_CXFA_FFWIDGETHANDLER_H_

#include "core/fxcrt/fx_coordinates.h"
#include "core/fxcrt/mask.h"
#include "fxjs/gc/heap.h"
#include "v8/include/cppgc/garbage-collected.h"
#include "v8/include/cppgc/member.h"
#include "v8/include/cppgc/visitor.h"
#include "xfa/fwl/cfwl_message.h"
#include "xfa/fwl/fwl_widgetdef.h"
#include "xfa/fxfa/cxfa_eventparam.h"
#include "xfa/fxfa/parser/cxfa_document.h"

class CFGAS_GEGraphics;
class CXFA_FFDocView;
class CXFA_FFWidget;
enum class FWL_WidgetHit;

class CXFA_FFWidgetHandler final
    : public cppgc::GarbageCollected<CXFA_FFWidgetHandler> {
 public:
  CONSTRUCT_VIA_MAKE_GARBAGE_COLLECTED;
  ~CXFA_FFWidgetHandler();

  void Trace(cppgc::Visitor* visitor) const;

  bool OnMouseEnter(CXFA_FFWidget* hWidget);
  bool OnMouseExit(CXFA_FFWidget* hWidget);
  bool OnLButtonDown(CXFA_FFWidget* hWidget,
                     Mask<XFA_FWL_KeyFlag> dwFlags,
                     const CFX_PointF& point);
  bool OnLButtonUp(CXFA_FFWidget* hWidget,
                   Mask<XFA_FWL_KeyFlag> dwFlags,
                   const CFX_PointF& point);
  bool OnLButtonDblClk(CXFA_FFWidget* hWidget,
                       Mask<XFA_FWL_KeyFlag> dwFlags,
                       const CFX_PointF& point);
  bool OnMouseMove(CXFA_FFWidget* hWidget,
                   Mask<XFA_FWL_KeyFlag> dwFlags,
                   const CFX_PointF& point);
  bool OnMouseWheel(CXFA_FFWidget* hWidget,
                    Mask<XFA_FWL_KeyFlag> dwFlags,
                    const CFX_PointF& point,
                    const CFX_Vector& delta);
  bool OnRButtonDown(CXFA_FFWidget* hWidget,
                     Mask<XFA_FWL_KeyFlag> dwFlags,
                     const CFX_PointF& point);
  bool OnRButtonUp(CXFA_FFWidget* hWidget,
                   Mask<XFA_FWL_KeyFlag> dwFlags,
                   const CFX_PointF& point);
  bool OnRButtonDblClk(CXFA_FFWidget* hWidget,
                       Mask<XFA_FWL_KeyFlag> dwFlags,
                       const CFX_PointF& point);

  WideString GetText(CXFA_FFWidget* widget);
  WideString GetSelectedText(CXFA_FFWidget* widget);
  void PasteText(CXFA_FFWidget* widget, const WideString& text);
  bool SelectAllText(CXFA_FFWidget* widget);

  bool CanUndo(CXFA_FFWidget* widget);
  bool CanRedo(CXFA_FFWidget* widget);
  bool Undo(CXFA_FFWidget* widget);
  bool Redo(CXFA_FFWidget* widget);

  bool OnKeyDown(CXFA_FFWidget* hWidget,
                 XFA_FWL_VKEYCODE dwKeyCode,
                 Mask<XFA_FWL_KeyFlag> dwFlags);
  bool OnChar(CXFA_FFWidget* hWidget,
              uint32_t dwChar,
              Mask<XFA_FWL_KeyFlag> dwFlags);
  FWL_WidgetHit HitTest(CXFA_FFWidget* pWidget, const CFX_PointF& point);
  void RenderWidget(CXFA_FFWidget* hWidget,
                    CFGAS_GEGraphics* pGS,
                    const CFX_Matrix& matrix,
                    bool bHighlight);
  bool HasEvent(CXFA_Node* pNode, XFA_EVENTTYPE eEventType);
  XFA_EventError ProcessEvent(CXFA_Node* pNode, CXFA_EventParam* pParam);

 private:
  explicit CXFA_FFWidgetHandler(CXFA_FFDocView* pDocView);

  cppgc::Member<CXFA_FFDocView> m_pDocView;
};

#endif  //  XFA_FXFA_CXFA_FFWIDGETHANDLER_H_