// 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_WIDGETMGR_H
#define _FWL_WIDGETMGR_H
class IFWL_Widget;
class IFWL_WidgetMgr;
class IFWL_WidgetMgrDelegate;
enum FWL_WGTRELATION {
    FWL_WGTRELATION_Parent = 0,
    FWL_WGTRELATION_Owner,
    FWL_WGTRELATION_FirstSibling,
    FWL_WGTRELATION_PriorSibling,
    FWL_WGTRELATION_NextSibling,
    FWL_WGTRELATION_LastSibling,
    FWL_WGTRELATION_FirstChild,
    FWL_WGTRELATION_LastChild,
    FWL_WGTRELATION_SystemForm
};
class IFWL_WidgetMgr
{
public:
    virtual ~IFWL_WidgetMgr() {}
    virtual int32_t		CountWidgets(IFWL_Widget *pParent = NULL) = 0;
    virtual IFWL_Widget*	GetWidget(int32_t nIndex, IFWL_Widget *pParent = NULL) = 0;
    virtual IFWL_Widget*	GetWidget(IFWL_Widget *pWidget, FWL_WGTRELATION eRelation) = 0;
    virtual int32_t		GetWidgetIndex(IFWL_Widget *pWidget) = 0;
    virtual FX_BOOL			SetWidgetIndex(IFWL_Widget *pWidget, int32_t nIndex) = 0;
    virtual FX_BOOL			IsWidget(void* pObj) = 0;
    virtual FWL_ERR			RepaintWidget(IFWL_Widget *pWidget, const CFX_RectF *pRect = NULL) = 0;
    virtual FX_DWORD		GetCapability() = 0;
};
IFWL_WidgetMgr*		FWL_GetWidgetMgr();
FX_BOOL FWL_WidgetIsChild(IFWL_Widget *parent, IFWL_Widget *find);
#define FWL_WGTMGR_DisableThread	0x00000001
#define FWL_WGTMGR_DisableForm		0x00000002
class IFWL_WidgetMgrDelegate
{
public:
    virtual ~IFWL_WidgetMgrDelegate() {}
    virtual FWL_ERR		OnSetCapability(FX_DWORD dwCapability = FWL_WGTMGR_DisableThread) = 0;
    virtual int32_t OnProcessMessageToForm(CFWL_Message *pMessage) = 0;
    virtual	FWL_ERR  OnDrawWidget(IFWL_Widget *pWidget, CFX_Graphics *pGraphics, const CFX_Matrix *pMatrix = NULL) = 0;
};
FWL_ERR FWL_WidgetMgrSnapshot(IFWL_Widget *pWidget, const CFX_WideString *saveFile, const CFX_Matrix *pMatrix = NULL);
#endif