// 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

#include "../../../foxitlib.h"
#include "../../src/core/include/fwl_threadimp.h"
#include "../../src/core/include/fwl_appimp.h"
#include "../core/include/fwl_targetimp.h"
#include "../core/include/fwl_noteimp.h"
#include "../core/include/fwl_widgetimp.h"
#include "../core/include/fwl_panelimp.h"
#include "../core/include/fwl_formimp.h"
#include "../core/include/fwl_widgetmgrimp.h"
#include "include/fwl_scrollbarimp.h"
#include "include/fwl_editimp.h"
#include "include/fwl_listboximp.h"
#include "include/fwl_formproxyimp.h"
#include "include/fwl_comboboximp.h"
IFWL_ComboBox* IFWL_ComboBox::Create()
{
    return new IFWL_ComboBox;
}
IFWL_ComboBox::IFWL_ComboBox()
{
    m_pData = NULL;
}
IFWL_ComboBox::~IFWL_ComboBox()
{
    if (m_pData) {
        delete (CFWL_ComboBoxImp*)m_pData;
        m_pData = NULL;
    }
}
FWL_ERR IFWL_ComboBox::Initialize(IFWL_Widget *pOuter)
{
    m_pData = FX_NEW CFWL_ComboBoxImp(pOuter);
    ((CFWL_ComboBoxImp*)m_pData)->SetInterface(this);
    return ((CFWL_ComboBoxImp*)m_pData)->Initialize();
}
FWL_ERR	IFWL_ComboBox::Initialize(const CFWL_WidgetImpProperties &properties, IFWL_Widget *pOuter)
{
    m_pData = FX_NEW CFWL_ComboBoxImp(properties, pOuter);
    ((CFWL_ComboBoxImp*)m_pData)->SetInterface(this);
    return ((CFWL_ComboBoxImp*)m_pData)->Initialize();
}
int32_t IFWL_ComboBox::GetCurSel()
{
    return ((CFWL_ComboBoxImp*)m_pData)->GetCurSel();
}
FWL_ERR	IFWL_ComboBox::SetCurSel(int32_t iSel)
{
    return ((CFWL_ComboBoxImp*)m_pData)->SetCurSel(iSel);
}
FWL_ERR	IFWL_ComboBox::SetEditText(const CFX_WideString &wsText)
{
    return ((CFWL_ComboBoxImp*)m_pData)->SetEditText(wsText);
}
int32_t IFWL_ComboBox::GetEditTextLength() const
{
    return ((CFWL_ComboBoxImp*)m_pData)->GetEditTextLength();
}
FWL_ERR	IFWL_ComboBox::GetEditText(CFX_WideString &wsText, int32_t nStart, int32_t nCount) const
{
    return ((CFWL_ComboBoxImp*)m_pData)->GetEditText(wsText, nStart, nCount);
}
FWL_ERR	IFWL_ComboBox::SetEditSelRange(int32_t nStart, int32_t nCount)
{
    return ((CFWL_ComboBoxImp*)m_pData)->SetEditSelRange(nStart, nCount);
}
int32_t IFWL_ComboBox::GetEditSelRange(int32_t nIndex, int32_t &nStart)
{
    return ((CFWL_ComboBoxImp*)m_pData)->GetEditSelRange(nIndex, nStart);
}
int32_t IFWL_ComboBox::GetEditLimit()
{
    return ((CFWL_ComboBoxImp*)m_pData)->GetEditLimit();
}
FWL_ERR IFWL_ComboBox::SetEditLimit(int32_t nLimit)
{
    return ((CFWL_ComboBoxImp*)m_pData)->SetEditLimit(nLimit);
}
FWL_ERR IFWL_ComboBox::EditDoClipboard(int32_t iCmd)
{
    return ((CFWL_ComboBoxImp*)m_pData)->EditDoClipboard(iCmd);
}
FX_BOOL IFWL_ComboBox::EditRedo(const CFX_ByteStringC& bsRecord)
{
    return ((CFWL_ComboBoxImp*)m_pData)->EditRedo(bsRecord);
}
FX_BOOL IFWL_ComboBox::EditUndo(const CFX_ByteStringC& bsRecord)
{
    return ((CFWL_ComboBoxImp*)m_pData)->EditUndo(bsRecord);
}
IFWL_ListBox*  IFWL_ComboBox::GetListBoxt()
{
    return ((CFWL_ComboBoxImp*)m_pData)->GetListBoxt();
}
FX_BOOL IFWL_ComboBox::AfterFocusShowDropList()
{
    return ((CFWL_ComboBoxImp*)m_pData)->AfterFocusShowDropList();
}
FX_ERR IFWL_ComboBox::OpenDropDownList(FX_BOOL bActivate)
{
    return ((CFWL_ComboBoxImp*)m_pData)->OpenDropDownList(bActivate);
}
FX_BOOL	IFWL_ComboBox::EditCanUndo()
{
    return ((CFWL_ComboBoxImp*)m_pData)->EditCanUndo();
}
FX_BOOL	IFWL_ComboBox::EditCanRedo()
{
    return ((CFWL_ComboBoxImp*)m_pData)->EditCanRedo();
}
FX_BOOL	IFWL_ComboBox::EditUndo()
{
    return ((CFWL_ComboBoxImp*)m_pData)->EditUndo();
}
FX_BOOL	IFWL_ComboBox::EditRedo()
{
    return ((CFWL_ComboBoxImp*)m_pData)->EditRedo();
}
FX_BOOL	IFWL_ComboBox::EditCanCopy()
{
    return ((CFWL_ComboBoxImp*)m_pData)->EditCanCopy();
}
FX_BOOL	IFWL_ComboBox::EditCanCut()
{
    return ((CFWL_ComboBoxImp*)m_pData)->EditCanCut();
}
FX_BOOL	IFWL_ComboBox::EditCanSelectAll()
{
    return ((CFWL_ComboBoxImp*)m_pData)->EditCanSelectAll();
}
FX_BOOL	IFWL_ComboBox::EditCopy(CFX_WideString &wsCopy)
{
    return ((CFWL_ComboBoxImp*)m_pData)->EditCopy(wsCopy);
}
FX_BOOL	IFWL_ComboBox::EditCut(CFX_WideString &wsCut)
{
    return ((CFWL_ComboBoxImp*)m_pData)->EditCut(wsCut);
}
FX_BOOL	IFWL_ComboBox::EditPaste(const CFX_WideString &wsPaste)
{
    return ((CFWL_ComboBoxImp*)m_pData)->EditPaste(wsPaste);
}
FX_BOOL	IFWL_ComboBox::EditSelectAll()
{
    return ((CFWL_ComboBoxImp*)m_pData)->EditSelectAll();
}
FX_BOOL	IFWL_ComboBox::EditDelete()
{
    return ((CFWL_ComboBoxImp*)m_pData)->EditDelete();
}
FX_BOOL	IFWL_ComboBox::EditDeSelect()
{
    return ((CFWL_ComboBoxImp*)m_pData)->EditDeSelect();
}
FWL_ERR	IFWL_ComboBox::GetBBox(CFX_RectF &rect)
{
    return ((CFWL_ComboBoxImp*)m_pData)->GetBBox(rect);
}
FWL_ERR	IFWL_ComboBox::EditModifyStylesEx(FX_DWORD dwStylesExAdded,
        FX_DWORD dwStylesExRemoved)
{
    return ((CFWL_ComboBoxImp*)m_pData)->EditModifyStylesEx(dwStylesExAdded,
            dwStylesExRemoved);
}
CFWL_ComboEdit::CFWL_ComboEdit(IFWL_Widget *pOuter)
    : CFWL_EditImp(pOuter)
{
    FXSYS_assert(pOuter != NULL);
    m_pOuter = (CFWL_ComboBoxImp*)(((IFWL_TargetData*)pOuter)->GetData());
}
CFWL_ComboEdit::CFWL_ComboEdit(const CFWL_WidgetImpProperties &properties, IFWL_Widget *pOuter)
    : CFWL_EditImp(properties, pOuter)
{
    FXSYS_assert(pOuter != NULL);
    m_pOuter = (CFWL_ComboBoxImp*)(((IFWL_TargetData*)pOuter)->GetData());
}

CFWL_ComboEditDelegate::CFWL_ComboEditDelegate(CFWL_ComboEdit *pOwner)
    : CFWL_EditImpDelegate(pOwner)
    , m_pOwner(pOwner)
{
}
int32_t CFWL_ComboEditDelegate::OnProcessMessage(CFWL_Message *pMessage)
{
    _FWL_RETURN_VALUE_IF_FAIL(pMessage, 0);
    FX_DWORD dwMsgCode = pMessage->GetClassID();
    FX_BOOL backDefault = TRUE;
    switch (dwMsgCode) {
        case FWL_MSGHASH_SetFocus:
        case FWL_MSGHASH_KillFocus: {
                if (dwMsgCode == FWL_MSGHASH_SetFocus) {
                    m_pOwner->m_pProperties->m_dwStates |= FWL_WGTSTATE_Focused;
                } else {
                    m_pOwner->m_pProperties->m_dwStates &= ~FWL_WGTSTATE_Focused;
                }
                backDefault = FALSE;
                break;
            }
        case FWL_MSGHASH_Mouse: {
                CFWL_MsgMouse *pMsg = (CFWL_MsgMouse*)pMessage;
                if ((pMsg->m_dwCmd == FWL_MSGMOUSECMD_LButtonDown) &&
                        ((m_pOwner->m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) == 0)) {
                    m_pOwner->SetSelected();
                    m_pOwner->SetComboBoxFocus(TRUE);
                }
                break;
            }
        default: {
            }
    }
    if (!backDefault) {
        return 1;
    }
    return CFWL_EditImpDelegate::OnProcessMessage(pMessage);
}
void CFWL_ComboEdit::ClearSelected()
{
    ClearSelections();
    Repaint(&m_rtClient);
}
void CFWL_ComboEdit::SetSelected()
{
    FlagFocus(TRUE);
    EndCaret();
    AddSelRange(0);
}
void CFWL_ComboEdit::EndCaret()
{
    m_pEdtEngine->MoveCaretPos(MC_End);
}
void CFWL_ComboEdit::FlagFocus(FX_BOOL bSet)
{
    if (bSet) {
        m_pProperties->m_dwStates |= FWL_WGTSTATE_Focused;
    } else {
        m_pProperties->m_dwStates &= ~FWL_WGTSTATE_Focused;
        ShowCaret(FALSE);
    }
};
void CFWL_ComboEdit::SetComboBoxFocus(FX_BOOL bSet)
{
    m_pOuter->SetFocus(bSet);
}
CFWL_ComboList::CFWL_ComboList(IFWL_Widget *pOuter)
    : CFWL_ListBoxImp(pOuter)
    , m_bNotifyOwner(TRUE)
{
    FXSYS_assert(pOuter != NULL);
}
CFWL_ComboList::CFWL_ComboList(const CFWL_WidgetImpProperties &properties, IFWL_Widget *pOuter)
    : CFWL_ListBoxImp(properties, pOuter)
    , m_bNotifyOwner(TRUE)
{
    FXSYS_assert(pOuter != NULL);
}
FWL_ERR CFWL_ComboList::Initialize()
{
    _FWL_ERR_CHECK_RETURN_VALUE_IF_FAIL(CFWL_ListBoxImp::Initialize(), FWL_ERR_Indefinite);
    if (m_pDelegate) {
        delete (CFWL_ComboListDelegate*)m_pDelegate;
        m_pDelegate = NULL;
    }
    m_pDelegate = (IFWL_WidgetDelegate*)FX_NEW CFWL_ComboListDelegate(this);
    return FWL_ERR_Succeeded;
}
FWL_ERR CFWL_ComboList::Finalize()
{
    if ( m_pDelegate) {
        delete (CFWL_ComboListDelegate*)m_pDelegate;
        m_pDelegate = NULL;
    }
    return CFWL_ListBoxImp::Finalize();
}
int32_t CFWL_ComboList::MatchItem(const CFX_WideString &wsMatch)
{
    if (wsMatch.IsEmpty()) {
        return -1;
    }
    _FWL_RETURN_VALUE_IF_FAIL(m_pProperties->m_pDataProvider, -1);
    IFWL_ListBoxDP *pData = (IFWL_ListBoxDP*)m_pProperties->m_pDataProvider;
    int32_t iCount = pData->CountItems(m_pInterface);
    for (int32_t i = 0; i < iCount; i ++) {
        FWL_HLISTITEM hItem = pData->GetItem(m_pInterface, i);
        CFX_WideString wsText;
        pData->GetItemText(m_pInterface, hItem, wsText);
        FX_STRSIZE pos = wsText.Find((const FX_WCHAR*)wsMatch);
        if (!pos) {
            return i;
        }
    }
    return -1;
}
void CFWL_ComboList::ChangeSelected(int32_t iSel)
{
    _FWL_RETURN_IF_FAIL(m_pProperties->m_pDataProvider);
    IFWL_ListBoxDP *pData = (IFWL_ListBoxDP*)m_pProperties->m_pDataProvider;
    FWL_HLISTITEM hItem = pData->GetItem(m_pInterface, iSel);
    CFX_RectF rtInvalidate;
    rtInvalidate.Reset();
    FWL_HLISTITEM hOld = GetSelItem(0);
    int32_t iOld = pData->GetItemIndex(m_pInterface, hOld);
    if (iOld == iSel) {
        return;
    } else if (iOld > -1) {
        GetItemRect(iOld, rtInvalidate);
        SetSelItem(hOld, FALSE);
    }
    if (hItem) {
        CFX_RectF rect;
        GetItemRect(iSel, rect);
        rtInvalidate.Union(rect);
        FWL_HLISTITEM hSel = pData->GetItem(m_pInterface, iSel);
        SetSelItem(hSel, TRUE);
    }
    if (!rtInvalidate.IsEmpty()) {
        Repaint(&rtInvalidate);
    }
}
int32_t CFWL_ComboList::CountItems()
{
    _FWL_RETURN_VALUE_IF_FAIL(m_pProperties->m_pDataProvider, 0);
    IFWL_ListBoxDP *pData = (IFWL_ListBoxDP*)m_pProperties->m_pDataProvider;
    return pData->CountItems(m_pInterface);
}
void CFWL_ComboList::GetItemRect(int32_t nIndex, CFX_RectF &rtItem)
{
    IFWL_ListBoxDP *pData = (IFWL_ListBoxDP*)m_pProperties->m_pDataProvider;
    FWL_HLISTITEM hItem = pData->GetItem(m_pInterface, nIndex);
    pData->GetItemRect(m_pInterface, hItem, rtItem);
}
void CFWL_ComboList::ClientToOuter(FX_FLOAT &fx, FX_FLOAT &fy)
{
    fx += m_pProperties->m_rtWidget.left, fy += m_pProperties->m_rtWidget.top;
    IFWL_Widget *pOwner = GetOwner();
    _FWL_RETURN_IF_FAIL(pOwner);
    pOwner->TransformTo(m_pOuter, fx, fy);
}
void CFWL_ComboList::SetFocus(FX_BOOL bSet)
{
    CFWL_WidgetImp::SetFocus(bSet);
}
CFWL_ComboListDelegate::CFWL_ComboListDelegate(CFWL_ComboList *pOwner)
    : CFWL_ListBoxImpDelegate(pOwner)
    , m_pOwner(pOwner)
{
}
int32_t CFWL_ComboListDelegate::OnProcessMessage(CFWL_Message *pMessage)
{
    _FWL_RETURN_VALUE_IF_FAIL(pMessage, 0);
    FX_DWORD dwHashCode = pMessage->GetClassID();
    FX_BOOL backDefault = TRUE;
    if (dwHashCode == FWL_MSGHASH_SetFocus || dwHashCode == FWL_MSGHASH_KillFocus) {
        OnDropListFocusChanged(pMessage, dwHashCode == FWL_MSGHASH_SetFocus);
    } else if (dwHashCode == FWL_MSGHASH_Mouse) {
        CFWL_MsgMouse *pMsg = (CFWL_MsgMouse*)pMessage;
        if (m_pOwner->IsShowScrollBar(TRUE) && m_pOwner->m_pVertScrollBar) {
            CFX_RectF rect;
            m_pOwner->m_pVertScrollBar->GetWidgetRect(rect);
            if (rect.Contains(pMsg->m_fx, pMsg->m_fy)) {
                pMsg->m_fx -= rect.left;
                pMsg->m_fy -= rect.top;
                IFWL_WidgetDelegate *pDelegate = m_pOwner->m_pVertScrollBar->SetDelegate(NULL);
                return pDelegate->OnProcessMessage(pMsg);
            }
        }
        FX_DWORD dwCmd = pMsg->m_dwCmd;
        switch (dwCmd) {
            case FWL_MSGMOUSECMD_MouseMove: {
                    backDefault = FALSE;
                    OnDropListMouseMove(pMsg);
                    break;
                }
            case FWL_MSGMOUSECMD_LButtonDown: {
                    backDefault = FALSE;
                    OnDropListLButtonDown(pMsg);
                    break;
                }
            case FWL_MSGMOUSECMD_LButtonUp: {
                    backDefault = FALSE;
                    OnDropListLButtonUp(pMsg);
                    break;
                }
            default: {
                }
        }
    } else if (dwHashCode == FWL_MSGHASH_Key) {
        CFWL_MsgKey *pMsg = (CFWL_MsgKey*)pMessage;
        backDefault = !OnDropListKey(pMsg);
    }
    if (!backDefault) {
        return 1;
    }
    return CFWL_ListBoxImpDelegate::OnProcessMessage(pMessage);
}
void CFWL_ComboListDelegate::OnDropListFocusChanged(CFWL_Message *pMsg, FX_BOOL bSet )
{
    if (!bSet) {
        CFWL_MsgKillFocus *pKill = (CFWL_MsgKillFocus*)pMsg;
        CFWL_ComboBoxImp *pOuter = (CFWL_ComboBoxImp*)(((IFWL_TargetData*)m_pOwner->m_pOuter)->GetData());
        if (pKill->m_pSetFocus == (IFWL_Widget*)m_pOwner->m_pOuter ||	(IFWL_Widget*)pKill->m_pSetFocus == (IFWL_Widget*)pOuter->m_pEdit) {
            pOuter->ShowDropList(FALSE);
        }
    }
}
int32_t CFWL_ComboListDelegate::OnDropListMouseMove(CFWL_MsgMouse *pMsg)
{
    if (m_pOwner->m_rtClient.Contains(pMsg->m_fx, pMsg->m_fy)) {
        if (m_pOwner->m_bNotifyOwner) {
            m_pOwner->m_bNotifyOwner = FALSE;
        }
        if (m_pOwner->IsShowScrollBar(TRUE) && m_pOwner->m_pVertScrollBar) {
            CFX_RectF rect;
            m_pOwner->m_pVertScrollBar->GetWidgetRect(rect);
            if (rect.Contains(pMsg->m_fx, pMsg->m_fy)) {
                return 1;
            }
        }
        FWL_HLISTITEM hItem = m_pOwner->GetItemAtPoint(pMsg->m_fx, pMsg->m_fy);
        if (hItem) {
            _FWL_RETURN_VALUE_IF_FAIL(m_pOwner->m_pProperties->m_pDataProvider, 0);
            IFWL_ListBoxDP *pData = (IFWL_ListBoxDP*)m_pOwner->m_pProperties->m_pDataProvider;
            int32_t iSel = pData->GetItemIndex(m_pOwner->m_pInterface, hItem);
            CFWL_EvtCmbHoverChanged event;
            event.m_pSrcTarget = m_pOwner->m_pOuter;
            event.m_iCurHover = iSel;
            m_pOwner->DispatchEvent(&event);
            m_pOwner->ChangeSelected(iSel);
        }
    } else if (m_pOwner->m_bNotifyOwner) {
        m_pOwner->ClientToOuter(pMsg->m_fx, pMsg->m_fy);
        CFWL_ComboBoxImp *pOuter = (CFWL_ComboBoxImp*)(((IFWL_TargetData*)m_pOwner->m_pOuter)->GetData());
        pOuter->m_pDelegate->OnProcessMessage(pMsg);
    }
    return 1;
}
int32_t CFWL_ComboListDelegate::OnDropListLButtonDown(CFWL_MsgMouse *pMsg)
{
    if (m_pOwner->m_rtClient.Contains(pMsg->m_fx, pMsg->m_fy)) {
        return 0;
    }
    CFWL_ComboBoxImp *pOuter = (CFWL_ComboBoxImp*)((IFWL_TargetData*)m_pOwner->m_pOuter)->GetData();
    pOuter->ShowDropList(FALSE);
    return 1;
}
int32_t CFWL_ComboListDelegate::OnDropListLButtonUp(CFWL_MsgMouse *pMsg)
{
    CFWL_ComboBoxImp *pOuter = (CFWL_ComboBoxImp*)((IFWL_TargetData*)m_pOwner->m_pOuter)->GetData();
    if (m_pOwner->m_bNotifyOwner) {
        m_pOwner->ClientToOuter(pMsg->m_fx, pMsg->m_fy);
        pOuter->m_pDelegate->OnProcessMessage(pMsg);
    } else {
        if (m_pOwner->IsShowScrollBar(TRUE) && m_pOwner->m_pVertScrollBar) {
            CFX_RectF rect;
            m_pOwner->m_pVertScrollBar->GetWidgetRect(rect);
            if (rect.Contains(pMsg->m_fx, pMsg->m_fy)) {
                return 1;
            }
        }
        pOuter->ShowDropList(FALSE);
        FWL_HLISTITEM hItem = m_pOwner->GetItemAtPoint(pMsg->m_fx, pMsg->m_fy);
        if (hItem) {
            pOuter->ProcessSelChanged(TRUE);
        }
    }
    return 1;
}
int32_t CFWL_ComboListDelegate::OnDropListKey(CFWL_MsgKey *pKey)
{
    CFWL_ComboBoxImp *pOuter = (CFWL_ComboBoxImp*)((IFWL_TargetData*)m_pOwner->m_pOuter)->GetData();
    FX_BOOL bPropagate = FALSE;
    if (pKey->m_dwCmd == FWL_MSGKEYCMD_KeyDown) {
        FX_DWORD dwKeyCode = pKey->m_dwKeyCode;
        switch (dwKeyCode) {
            case FWL_VKEY_Return:
            case FWL_VKEY_Escape: {
                    pOuter->ShowDropList(FALSE);
                    return 1;
                }
            case FWL_VKEY_Up:
            case FWL_VKEY_Down: {
                    OnDropListKeyDown(pKey);
                    IFWL_WidgetDelegate *pDelegate = pOuter->SetDelegate(NULL);
                    pOuter->ProcessSelChanged(FALSE);
                    return 1;
                }
            default: {
                    bPropagate = TRUE;
                }
        }
    } else if (pKey->m_dwCmd == FWL_MSGKEYCMD_Char) {
        bPropagate = TRUE;
    }
    if (bPropagate) {
        pKey->m_pDstTarget = (IFWL_Widget*)m_pOwner->m_pOuter;
        pOuter->m_pDelegate->OnProcessMessage(pKey);
        return 1;
    }
    return 0;
}
void CFWL_ComboListDelegate::OnDropListKeyDown(CFWL_MsgKey *pKey)
{
    FX_DWORD dwKeyCode = pKey->m_dwKeyCode;
    switch(dwKeyCode) {
        case FWL_VKEY_Up:
        case FWL_VKEY_Down:
        case FWL_VKEY_Home:
        case FWL_VKEY_End: {
                CFWL_ComboBoxImp *pOuter = (CFWL_ComboBoxImp*)((IFWL_TargetData*)m_pOwner->m_pOuter)->GetData();
                IFWL_ListBoxDP *pData = (IFWL_ListBoxDP*)m_pOwner->m_pProperties->m_pDataProvider;
                FWL_HLISTITEM hItem = pData->GetItem(m_pOwner->m_pInterface, pOuter->m_iCurSel);
                hItem = m_pOwner->GetItem(hItem, dwKeyCode);
                if (!hItem) {
                    break;
                }
                m_pOwner->SetSelection(hItem, hItem, TRUE);
                m_pOwner->ScrollToVisible(hItem);
                CFX_RectF rtInvalidate;
                rtInvalidate.Set(0,
                                 0,
                                 m_pOwner->m_pProperties->m_rtWidget.width,
                                 m_pOwner->m_pProperties->m_rtWidget.height);
                m_pOwner->Repaint(&rtInvalidate);
                break;
            }
        default: {
            }
    }
}
CFWL_ComboBoxImp::CFWL_ComboBoxImp(IFWL_Widget *pOuter )
    : CFWL_WidgetImp(pOuter)
    , m_pEdit(NULL)
    , m_pListBox(NULL)
    , m_pForm(NULL)
    , m_bLButtonDown(FALSE)
    , m_iCurSel(-1)
    , m_iBtnState(FWL_PARTSTATE_CMB_Normal)
    , m_fComboFormHandler(0)
    , m_bNeedShowList(FALSE)
{
    m_rtClient.Reset();
    m_rtBtn.Reset();
    m_rtHandler.Reset();
}
CFWL_ComboBoxImp::CFWL_ComboBoxImp(const CFWL_WidgetImpProperties &properties, IFWL_Widget *pOuter )
    : CFWL_WidgetImp(properties, pOuter)
    , m_pEdit(NULL)
    , m_pListBox(NULL)
    , m_pForm(NULL)
    , m_bLButtonDown(FALSE)
    , m_iCurSel(-1)
    , m_iBtnState(FWL_PARTSTATE_CMB_Normal)
    , m_fComboFormHandler(0)
    , m_bNeedShowList(FALSE)
{
    m_rtClient.Reset();
    m_rtBtn.Reset();
    m_rtHandler.Reset();
}
CFWL_ComboBoxImp::~CFWL_ComboBoxImp()
{
    if (m_pEdit) {
        m_pEdit->Release();
        m_pEdit = NULL;
    }
    if (m_pListBox) {
        m_pListBox->Release();
        m_pListBox = NULL;
    }
}
FWL_ERR CFWL_ComboBoxImp::GetClassName(CFX_WideString &wsClass) const
{
    wsClass = FWL_CLASS_ComboBox;
    return FWL_ERR_Succeeded;
}
FX_DWORD CFWL_ComboBoxImp::GetClassID() const
{
    return FWL_CLASSHASH_ComboBox;
}
FWL_ERR CFWL_ComboBoxImp::Initialize()
{
    if (m_pWidgetMgr->IsFormDisabled()) {
        return DisForm_Initialize();
    }
    _FWL_ERR_CHECK_RETURN_VALUE_IF_FAIL(CFWL_WidgetImp::Initialize(), FWL_WGTSTATE_Invisible);
    m_pDelegate = (IFWL_WidgetDelegate*)FX_NEW CFWL_ComboBoxImpDelegate(this);
    CFWL_WidgetImpProperties prop;
    prop.m_pThemeProvider = m_pProperties->m_pThemeProvider;
    prop.m_dwStyles |= FWL_WGTSTYLE_Border | FWL_WGTSTYLE_VScroll;
    if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CMB_ListItemIconText) {
        prop.m_dwStyleExes |= FWL_STYLEEXT_LTB_Icon;
    }
    prop.m_pDataProvider = m_pProperties->m_pDataProvider;
    CFWL_ComboList *pList = FX_NEW CFWL_ComboList(prop, m_pInterface);
    m_pListBox = IFWL_ListBox::Create();
    pList->SetInterface(m_pListBox);
    ((IFWL_TargetData*)m_pListBox)->SetData(pList);
    pList->Initialize();
    if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CMB_DropDown) && !m_pEdit) {
        CFWL_ComboEdit *pEdit = FX_NEW CFWL_ComboEdit(m_pInterface);
        m_pEdit = IFWL_Edit::Create();
        pEdit->SetInterface(m_pEdit);
        ((IFWL_TargetData*)m_pEdit)->SetData(pEdit);
        pEdit->Initialize();
        pEdit->SetOuter(m_pInterface);
    }
    if (m_pEdit) {
        m_pEdit->SetParent(m_pInterface);
    }
    SetStates(m_pProperties->m_dwStates);
    return FWL_ERR_Succeeded;
}
FWL_ERR CFWL_ComboBoxImp::Finalize()
{
    if (m_pEdit) {
        m_pEdit->Finalize();
    }
    m_pListBox->Finalize();
    if ( m_pDelegate) {
        delete (CFWL_ComboBoxImpDelegate*)m_pDelegate;
        m_pDelegate = NULL;
    }
    return CFWL_WidgetImp::Finalize();
}
FWL_ERR CFWL_ComboBoxImp::GetWidgetRect(CFX_RectF &rect, FX_BOOL bAutoSize )
{
    if (bAutoSize) {
        rect.Reset();
        FX_BOOL bIsDropDown = IsDropDownStyle();
        if (bIsDropDown && m_pEdit) {
            m_pEdit->GetWidgetRect(rect, TRUE);
        } else {
            rect.width = 100;
            rect.height = 16;
        }
        if (!m_pProperties->m_pThemeProvider) {
            ReSetTheme();
        }
        FX_FLOAT *pFWidth = (FX_FLOAT*)GetThemeCapacity(FWL_WGTCAPACITY_ScrollBarWidth);
        _FWL_RETURN_VALUE_IF_FAIL(pFWidth, FWL_ERR_Indefinite);
        rect.Inflate(0, 0, *pFWidth, 0);
        CFWL_WidgetImp::GetWidgetRect(rect, TRUE);
    } else {
        rect = m_pProperties->m_rtWidget;
    }
    return FWL_ERR_Succeeded;
}
FWL_ERR CFWL_ComboBoxImp::ModifyStylesEx(FX_DWORD dwStylesExAdded, FX_DWORD dwStylesExRemoved)
{
    if (m_pWidgetMgr->IsFormDisabled()) {
        return DisForm_ModifyStylesEx(dwStylesExAdded, dwStylesExRemoved);
    }
    FX_BOOL bAddDropDown = dwStylesExAdded & FWL_STYLEEXT_CMB_DropDown;
    FX_BOOL bRemoveDropDown = dwStylesExRemoved & FWL_STYLEEXT_CMB_DropDown;
    if (bAddDropDown && !m_pEdit) {
        CFWL_ComboEdit *pEdit = FX_NEW CFWL_ComboEdit(m_pInterface);
        m_pEdit = IFWL_Edit::Create();
        pEdit->SetInterface(m_pEdit);
        ((IFWL_TargetData*)m_pEdit)->SetData(pEdit);
        pEdit->Initialize();
        pEdit->SetOuter(m_pInterface);
        m_pEdit->SetParent(m_pInterface);
    } else if (bRemoveDropDown && m_pEdit) {
        m_pEdit->SetStates(FWL_WGTSTATE_Invisible, TRUE);
    }
    return CFWL_WidgetImp::ModifyStylesEx(dwStylesExAdded, dwStylesExRemoved);
}
FWL_ERR CFWL_ComboBoxImp::Update()
{
    if (m_pWidgetMgr->IsFormDisabled()) {
        return DisForm_Update();
    }
    if (IsLocked()) {
        return FWL_ERR_Indefinite;
    }
    ReSetTheme();
    FX_BOOL bDropDown = IsDropDownStyle();
    if (bDropDown && m_pEdit) {
        ReSetEditAlignment();
    }
    if (m_pProperties->m_pThemeProvider == NULL) {
        m_pProperties->m_pThemeProvider = GetAvailableTheme();
    }
    Layout();
    CFWL_ThemePart part;
    part.m_pWidget = m_pInterface;
    m_fComboFormHandler = *(FX_FLOAT *) m_pProperties->m_pThemeProvider->GetCapacity(&part, FWL_WGTCAPACITY_CMB_ComboFormHandler);
    return FWL_ERR_Succeeded;
}
FX_DWORD CFWL_ComboBoxImp::HitTest(FX_FLOAT fx, FX_FLOAT fy)
{
    if (m_pWidgetMgr->IsFormDisabled()) {
        return DisForm_HitTest(fx, fy);
    }
    return CFWL_WidgetImp::HitTest(fx, fy);
}
FWL_ERR CFWL_ComboBoxImp::DrawWidget(CFX_Graphics *pGraphics, const CFX_Matrix *pMatrix )
{
    if (m_pWidgetMgr->IsFormDisabled()) {
        return DisForm_DrawWidget(pGraphics, pMatrix);
    }
    _FWL_RETURN_VALUE_IF_FAIL(pGraphics, FWL_ERR_Indefinite);
    _FWL_RETURN_VALUE_IF_FAIL(m_pProperties->m_pThemeProvider, FWL_ERR_Indefinite);
    IFWL_ThemeProvider *pTheme = m_pProperties->m_pThemeProvider;
    FX_BOOL bIsDropDown = IsDropDownStyle();
    if (HasBorder()) {
        DrawBorder(pGraphics, FWL_PART_CMB_Border, pTheme, pMatrix);
    }
    if (HasEdge()) {
        DrawEdge(pGraphics, FWL_PART_CMB_Edge, pTheme, pMatrix);
    }
    if (!bIsDropDown) {
        CFX_RectF rtTextBk(m_rtClient);
        rtTextBk.width -= m_rtBtn.width;
        CFWL_ThemeBackground param;
        param.m_pWidget = m_pInterface;
        param.m_iPart = FWL_PART_CMB_Background;
        param.m_pGraphics = pGraphics;
        if (pMatrix) {
            param.m_matrix.Concat(*pMatrix);
        }
        param.m_rtPart = rtTextBk;
        if (m_iCurSel >= 0) {
            IFWL_ListBoxDP* pData = (IFWL_ListBoxDP*)((CFWL_ComboList*)((IFWL_TargetData*)m_pListBox)->GetData())->m_pProperties->m_pDataProvider;
            void* p = pData->GetItemData(m_pListBox, pData->GetItem(m_pListBox, m_iCurSel));
            if (p != NULL) {
                param.m_pData = p;
            }
        }
        if (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) {
            param.m_dwStates = FWL_PARTSTATE_CMB_Disabled;
        } else if ((m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) && (m_iCurSel >= 0)) {
            param.m_dwStates = FWL_PARTSTATE_CMB_Selected;
        } else {
            param.m_dwStates = FWL_PARTSTATE_CMB_Normal;
        }
        pTheme->DrawBackground(&param);
        if (m_iCurSel >= 0) {
            _FWL_RETURN_VALUE_IF_FAIL(m_pListBox, FWL_ERR_Indefinite);
            CFX_WideString wsText;
            IFWL_ComboBoxDP *pData = (IFWL_ComboBoxDP *)m_pProperties->m_pDataProvider;
            FWL_HLISTITEM hItem = pData->GetItem(m_pInterface, m_iCurSel);
            ((CFWL_ComboList*)((IFWL_TargetData*)m_pListBox)->GetData())->GetItemText(hItem, wsText);
            CFWL_ThemeText param;
            param.m_pWidget = m_pInterface;
            param.m_iPart = FWL_PART_CMB_Caption;
            param.m_dwStates = m_iBtnState;
            param.m_pGraphics = pGraphics;
            param.m_matrix.Concat(*pMatrix);
            param.m_rtPart = rtTextBk;
            param.m_dwStates = (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) ? FWL_PARTSTATE_CMB_Selected : FWL_PARTSTATE_CMB_Normal;
            param.m_wsText = wsText;
            param.m_dwTTOStyles = FDE_TTOSTYLE_SingleLine;
            param.m_iTTOAlign = FDE_TTOALIGNMENT_CenterLeft;
            pTheme->DrawText(&param);
        }
    }
    {
        CFWL_ThemeBackground param;
        param.m_pWidget = m_pInterface;
        param.m_iPart = FWL_PART_CMB_DropDownButton;
        param.m_dwStates = (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) ? FWL_PARTSTATE_CMB_Disabled : m_iBtnState;
        param.m_pGraphics = pGraphics;
        param.m_matrix.Concat(*pMatrix);
        param.m_rtPart = m_rtBtn;
        pTheme->DrawBackground(&param);
    }
    return FWL_ERR_Succeeded;
}
FWL_ERR CFWL_ComboBoxImp::SetThemeProvider(IFWL_ThemeProvider *pThemeProvider)
{
    _FWL_RETURN_VALUE_IF_FAIL(pThemeProvider, FWL_ERR_Indefinite);
    m_pProperties->m_pThemeProvider = pThemeProvider;
    if (m_pListBox && pThemeProvider->IsValidWidget(m_pListBox)) {
        m_pListBox->SetThemeProvider(pThemeProvider);
    }
    if (m_pEdit && pThemeProvider->IsValidWidget(m_pEdit)) {
        m_pEdit->SetThemeProvider(pThemeProvider);
    }
    return FWL_ERR_Succeeded;
}
int32_t CFWL_ComboBoxImp::GetCurSel()
{
    return m_iCurSel;
}
FWL_ERR CFWL_ComboBoxImp::SetCurSel(int32_t iSel)
{
    int32_t iCount = ((CFWL_ComboList*)((IFWL_TargetData*)m_pListBox)->GetData())->CountItems();
    FX_BOOL bClearSel = iSel < 0 || iSel >= iCount;
    FX_BOOL bDropDown = IsDropDownStyle();
    if (bDropDown && m_pEdit) {
        if (bClearSel) {
            m_pEdit->SetText(CFX_WideString());
        } else {
            CFX_WideString wsText;
            IFWL_ComboBoxDP *pData = (IFWL_ComboBoxDP *)m_pProperties->m_pDataProvider;
            FWL_HLISTITEM hItem = pData->GetItem(m_pInterface, iSel);
            ((CFWL_ComboList*)((IFWL_TargetData*)m_pListBox)->GetData())->GetItemText(hItem, wsText);
            m_pEdit->SetText(wsText);
        }
        m_pEdit->Update();
    }
    m_iCurSel = bClearSel ? -1 : iSel;
    return FWL_ERR_Succeeded;
}
FWL_ERR CFWL_ComboBoxImp::SetStates(FX_DWORD dwStates, FX_BOOL bSet )
{
    FX_BOOL bIsDropDown = IsDropDownStyle();
    if (bIsDropDown && m_pEdit) {
        m_pEdit->SetStates(dwStates, bSet);
    }
    if (m_pListBox) {
        m_pListBox->SetStates(dwStates, bSet);
    }
    return CFWL_WidgetImp::SetStates(dwStates, bSet);
}
FWL_ERR CFWL_ComboBoxImp::SetEditText(const CFX_WideString &wsText)
{
    _FWL_RETURN_VALUE_IF_FAIL(m_pEdit, FWL_ERR_Indefinite);
    m_pEdit->SetText(wsText);
    return m_pEdit->Update();
}
int32_t CFWL_ComboBoxImp::GetEditTextLength() const
{
    _FWL_RETURN_VALUE_IF_FAIL(m_pEdit, -1);
    return m_pEdit->GetTextLength();
}
FWL_ERR CFWL_ComboBoxImp::GetEditText(CFX_WideString &wsText, int32_t nStart , int32_t nCount ) const
{
    if (m_pEdit) {
        return m_pEdit->GetText(wsText, nStart, nCount);
    } else if (m_pListBox) {
        IFWL_ComboBoxDP *pData = (IFWL_ComboBoxDP *)m_pProperties->m_pDataProvider;
        FWL_HLISTITEM hItem = pData->GetItem(m_pInterface, m_iCurSel);
        return m_pListBox->GetItemText(hItem, wsText);
    }
    return FWL_ERR_Indefinite;
}
FWL_ERR CFWL_ComboBoxImp::SetEditSelRange(int32_t nStart, int32_t nCount )
{
    _FWL_RETURN_VALUE_IF_FAIL(m_pEdit, FWL_ERR_Indefinite);
    ((CFWL_ComboEdit*)((IFWL_TargetData*)m_pEdit)->GetData())->ClearSelected();
    m_pEdit->AddSelRange(nStart, nCount);
    return FWL_ERR_Succeeded;
}
int32_t CFWL_ComboBoxImp::GetEditSelRange(int32_t nIndex, int32_t &nStart)
{
    _FWL_RETURN_VALUE_IF_FAIL(m_pEdit, -1);
    return m_pEdit->GetSelRange(nIndex, nStart);
}
int32_t CFWL_ComboBoxImp::GetEditLimit()
{
    _FWL_RETURN_VALUE_IF_FAIL(m_pEdit, -1);
    return m_pEdit->GetLimit();
}
FWL_ERR CFWL_ComboBoxImp::SetEditLimit(int32_t nLimit)
{
    _FWL_RETURN_VALUE_IF_FAIL(m_pEdit, FWL_ERR_Indefinite);
    return m_pEdit->SetLimit(nLimit);
}
FWL_ERR CFWL_ComboBoxImp::EditDoClipboard(int32_t iCmd)
{
    _FWL_RETURN_VALUE_IF_FAIL(m_pEdit, FWL_ERR_Indefinite);
    return m_pEdit->DoClipboard(iCmd);
}
FX_BOOL	CFWL_ComboBoxImp::EditRedo(const CFX_ByteStringC& bsRecord)
{
    _FWL_RETURN_VALUE_IF_FAIL(m_pEdit, FALSE);
    return m_pEdit->Redo(bsRecord);
}
FX_BOOL CFWL_ComboBoxImp::EditUndo(const CFX_ByteStringC& bsRecord)
{
    _FWL_RETURN_VALUE_IF_FAIL(m_pEdit, FALSE);
    return m_pEdit->Undo(bsRecord);
}
IFWL_ListBox* CFWL_ComboBoxImp::GetListBoxt()
{
    _FWL_RETURN_VALUE_IF_FAIL(m_pListBox, FALSE);
    return m_pListBox;
}
FX_BOOL CFWL_ComboBoxImp::AfterFocusShowDropList()
{
    if (!m_bNeedShowList) {
        return FALSE;
    }
    if (m_pEdit) {
        MatchEditText();
    }
    ShowDropList(TRUE);
    m_bNeedShowList = FALSE;
    return TRUE;
}
FX_ERR CFWL_ComboBoxImp::OpenDropDownList(FX_BOOL bActivate)
{
    ShowDropList(bActivate);
    return FWL_ERR_Succeeded;
}
FX_BOOL	CFWL_ComboBoxImp::EditCanUndo()
{
    return m_pEdit->CanUndo();
}
FX_BOOL	CFWL_ComboBoxImp::EditCanRedo()
{
    return m_pEdit->CanRedo();
}
FX_BOOL	CFWL_ComboBoxImp::EditUndo()
{
    return m_pEdit->Undo();
}
FX_BOOL	CFWL_ComboBoxImp::EditRedo()
{
    return m_pEdit->Redo();
}
FX_BOOL	CFWL_ComboBoxImp::EditCanCopy()
{
    return m_pEdit->CountSelRanges() > 0;
}
FX_BOOL	CFWL_ComboBoxImp::EditCanCut()
{
    if (m_pEdit->GetStylesEx() & FWL_STYLEEXT_EDT_ReadOnly) {
        return FALSE;
    }
    return m_pEdit->CountSelRanges() > 0;
}
FX_BOOL	CFWL_ComboBoxImp::EditCanSelectAll()
{
    return m_pEdit->GetTextLength() > 0;
}
FX_BOOL	CFWL_ComboBoxImp::EditCopy(CFX_WideString &wsCopy)
{
    return m_pEdit->Copy(wsCopy);
}
FX_BOOL	CFWL_ComboBoxImp::EditCut(CFX_WideString &wsCut)
{
    return m_pEdit->Cut(wsCut);
}
FX_BOOL	CFWL_ComboBoxImp::EditPaste(const CFX_WideString &wsPaste)
{
    return m_pEdit->Paste(wsPaste);
}
FX_BOOL	CFWL_ComboBoxImp::EditSelectAll()
{
    return (m_pEdit->AddSelRange(0) == FWL_ERR_Succeeded) ? TRUE : FALSE;
}
FX_BOOL	CFWL_ComboBoxImp::EditDelete()
{
    return (m_pEdit->ClearText() == FWL_ERR_Succeeded) ? TRUE : FALSE;
}
FX_BOOL	CFWL_ComboBoxImp::EditDeSelect()
{
    return (m_pEdit->ClearSelections() == FWL_ERR_Succeeded) ? TRUE : FALSE;
}
FWL_ERR	CFWL_ComboBoxImp::GetBBox(CFX_RectF &rect)
{
    if (m_pWidgetMgr->IsFormDisabled()) {
        return DisForm_GetBBox(rect);
    }
    rect = m_pProperties->m_rtWidget;
    if (m_pListBox && IsDropListShowed()) {
        CFX_RectF rtList;
        m_pListBox->GetWidgetRect(rtList);
        rtList.Offset(rect.left, rect.top);
        rect.Union(rtList);
    }
    return FWL_ERR_Succeeded;
}
FWL_ERR	CFWL_ComboBoxImp::EditModifyStylesEx(FX_DWORD dwStylesExAdded,
        FX_DWORD dwStylesExRemoved)
{
    if (m_pEdit != NULL) {
        return m_pEdit->ModifyStylesEx(dwStylesExAdded, dwStylesExRemoved);
    } else {
        return FWL_ERR_Parameter_Invalid;
    }
}
FX_FLOAT CFWL_ComboBoxImp::GetListHeight()
{
    return ((IFWL_ComboBoxDP*)m_pProperties->m_pDataProvider)->GetListHeight(m_pInterface);
}
void CFWL_ComboBoxImp::DrawStretchHandler(CFX_Graphics *pGraphics, const CFX_Matrix *pMatrix)
{
    CFWL_ThemeBackground param;
    param.m_pGraphics = pGraphics;
    param.m_iPart =	FWL_PART_CMB_StretcgHandler;
    param.m_dwStates = FWL_PARTSTATE_CMB_Normal;
    param.m_pWidget = m_pInterface;
    if (pMatrix) {
        param.m_matrix.Concat(*pMatrix);
    }
    param.m_rtPart = m_rtHandler;
    m_pProperties->m_pThemeProvider->DrawBackground(&param);
}
void CFWL_ComboBoxImp::ShowDropList(FX_BOOL bActivate)
{
    if (m_pWidgetMgr->IsFormDisabled()) {
        return DisForm_ShowDropList(bActivate);
    }
    FX_BOOL bDropList = IsDropListShowed();
    if(bDropList == bActivate) {
        return;
    }
    if (!m_pForm) {
        InitProxyForm();
    }
    m_pListProxyDelegate->Reset();
    if (bActivate) {
        ((CFWL_ComboList*)((IFWL_TargetData*)m_pListBox)->GetData())->ChangeSelected(m_iCurSel);
        ReSetListItemAlignment();
        FX_DWORD dwStyleAdd = m_pProperties->m_dwStyleExes & (FWL_STYLEEXT_CMB_Sort | FWL_STYLEEXT_CMB_OwnerDraw);
        m_pListBox->ModifyStylesEx(dwStyleAdd, 0);
        m_pListBox->GetWidgetRect(m_rtList, TRUE);
        FX_FLOAT fHeight = GetListHeight();
        if (fHeight > 0) {
            if (m_rtList.height > GetListHeight()) {
                m_rtList.height = GetListHeight();
                m_pListBox->ModifyStyles(FWL_WGTSTYLE_VScroll, 0);
            }
        }
        CFX_RectF rtAnchor;
        rtAnchor.Set(0,
                     0,
                     m_pProperties->m_rtWidget.width,
                     m_pProperties->m_rtWidget.height);
        FX_FLOAT fMinHeight = 0;
        FX_FLOAT fMaxHeight = m_rtList.height;
        if (m_rtList.width < m_rtClient.width) {
            m_rtList.width = m_rtClient.width;
        }
        m_rtProxy = m_rtList;
        if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CMB_ListDrag) {
            m_rtProxy.height += m_fComboFormHandler;
        }
        GetPopupPos(fMinHeight, m_rtProxy.height, rtAnchor, m_rtProxy);
        if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CMB_ListDrag) {
            FX_FLOAT fx = 0;
            FX_FLOAT fy = m_rtClient.top + m_rtClient.height / 2;
            TransformTo(NULL, fx, fy);
            m_bUpFormHandler = fy > m_rtProxy.top;
            if (m_bUpFormHandler) {
                m_rtHandler.Set(0, 0, m_rtList.width, m_fComboFormHandler);
                m_rtList.top = m_fComboFormHandler;
            } else {
                m_rtHandler.Set(0, m_rtList.height, m_rtList.width, m_fComboFormHandler);
            }
        }
        m_pForm->SetWidgetRect(m_rtProxy);
        m_pForm->Update();
        m_pListBox->SetWidgetRect(m_rtList);
        m_pListBox->Update();
        CFWL_EvtCmbPreDropDown ev;
        ev.m_pSrcTarget = m_pInterface;
        DispatchEvent(&ev);
        m_fItemHeight = ((CFWL_ComboList*)((IFWL_TargetData*)m_pListBox)->GetData())->m_fItemHeight;
        ((CFWL_ComboList*)((IFWL_TargetData*)m_pListBox)->GetData())->SetFocus(TRUE);
        m_pForm->DoModal();
        ((CFWL_ComboList*)((IFWL_TargetData*)m_pListBox)->GetData())->SetFocus(FALSE);
    } else {
        m_pForm->EndDoModal();
        CFWL_EvtCmbCloseUp ev;
        ev.m_pSrcTarget = m_pInterface;
        DispatchEvent(&ev);
        m_bLButtonDown = FALSE;
        ((CFWL_ComboList*)((IFWL_TargetData*)m_pListBox)->GetData())->m_bNotifyOwner = TRUE;
        SetFocus(TRUE);
    }
}
FX_BOOL CFWL_ComboBoxImp::IsDropListShowed()
{
    return m_pForm && !(m_pForm->GetStates() & FWL_WGTSTATE_Invisible);
}
FX_BOOL CFWL_ComboBoxImp::IsDropDownStyle() const
{
    return m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CMB_DropDown;
}
void CFWL_ComboBoxImp::MatchEditText()
{
    CFX_WideString wsText;
    m_pEdit->GetText(wsText);
    int32_t iMatch = ((CFWL_ComboList*)((IFWL_TargetData*)m_pListBox)->GetData())->MatchItem(wsText);
    if (iMatch != m_iCurSel) {
        ((CFWL_ComboList*)((IFWL_TargetData*)m_pListBox)->GetData())->ChangeSelected(iMatch);
        if (iMatch >= 0) {
            SynchrEditText(iMatch);
        }
    } else if (iMatch >= 0) {
        ((CFWL_ComboEdit*)((IFWL_TargetData*)m_pEdit)->GetData())->SetSelected();
    }
    m_iCurSel = iMatch;
}
void CFWL_ComboBoxImp::SynchrEditText(int32_t iListItem)
{
    CFX_WideString wsText;
    IFWL_ComboBoxDP *pData = (IFWL_ComboBoxDP *)m_pProperties->m_pDataProvider;
    FWL_HLISTITEM hItem = pData->GetItem(m_pInterface, iListItem);
    ((CFWL_ComboList*)((IFWL_TargetData*)m_pListBox)->GetData())->GetItemText(hItem, wsText);
    m_pEdit->SetText(wsText);
    m_pEdit->Update();
    ((CFWL_ComboEdit*)((IFWL_TargetData*)m_pEdit)->GetData())->SetSelected();
}
void CFWL_ComboBoxImp::Layout()
{
    if (m_pWidgetMgr->IsFormDisabled()) {
        return DisForm_Layout();
    }
    GetClientRect(m_rtClient);
    FX_FLOAT *pFWidth = (FX_FLOAT*)GetThemeCapacity(FWL_WGTCAPACITY_ScrollBarWidth);
    _FWL_RETURN_IF_FAIL(pFWidth);
    FX_FLOAT fBtn = *pFWidth;
    m_rtBtn.Set(m_rtClient.right() - fBtn, m_rtClient.top, fBtn, m_rtClient.height);
    FX_BOOL bIsDropDown = IsDropDownStyle();
    if (bIsDropDown && m_pEdit) {
        CFX_RectF rtEdit;
        rtEdit.Set(m_rtClient.left, m_rtClient.top, m_rtClient.width - fBtn, m_rtClient.height);
        m_pEdit->SetWidgetRect(rtEdit);
        if (m_iCurSel >= 0) {
            CFX_WideString wsText;
            IFWL_ComboBoxDP *pData = (IFWL_ComboBoxDP *)m_pProperties->m_pDataProvider;
            FWL_HLISTITEM hItem = pData->GetItem(m_pInterface, m_iCurSel);
            ((CFWL_ComboList*)((IFWL_TargetData*)m_pListBox)->GetData())->GetItemText(hItem, wsText);
            m_pEdit->LockUpdate();
            m_pEdit->SetText(wsText);
            m_pEdit->UnlockUpdate();
        }
        m_pEdit->Update();
    }
}
void CFWL_ComboBoxImp::ReSetTheme()
{
    IFWL_ThemeProvider *pTheme = m_pProperties->m_pThemeProvider;
    if (!pTheme) {
        pTheme = GetAvailableTheme();
        m_pProperties->m_pThemeProvider = pTheme;
    }
    if (m_pListBox) {
        if (!m_pListBox->GetThemeProvider() && pTheme->IsValidWidget(m_pListBox)) {
            m_pListBox->SetThemeProvider(pTheme);
        }
    }
    if (m_pEdit) {
        if (!m_pEdit->GetThemeProvider() && pTheme->IsValidWidget(m_pEdit)) {
            m_pEdit->SetThemeProvider(pTheme);
        }
    }
}
void CFWL_ComboBoxImp::ReSetEditAlignment()
{
    _FWL_RETURN_IF_FAIL(m_pEdit);
    FX_DWORD dwStylExes = m_pProperties->m_dwStyleExes;
    FX_DWORD dwAdd = 0;
    switch (dwStylExes & FWL_STYLEEXT_CMB_EditHAlignMask) {
        case FWL_STYLEEXT_CMB_EditHCenter: {
                dwAdd |= FWL_STYLEEXT_EDT_HCenter;
                break;
            }
        case FWL_STYLEEXT_CMB_EditHFar: {
                dwAdd |= FWL_STYLEEXT_EDT_HFar;
                break;
            }
        default: {
                dwAdd |= FWL_STYLEEXT_EDT_HNear;
            }
    }
    switch (dwStylExes & FWL_STYLEEXT_CMB_EditVAlignMask) {
        case FWL_STYLEEXT_CMB_EditVCenter: {
                dwAdd |= FWL_STYLEEXT_EDT_VCenter;
                break;
            }
        case FWL_STYLEEXT_CMB_EditVFar: {
                dwAdd |= FWL_STYLEEXT_EDT_VFar;
                break;
            }
        default: {
                dwAdd |= FWL_STYLEEXT_EDT_VNear;
            }
    }
    if (dwStylExes & FWL_STYLEEXT_CMB_EditJustified) {
        dwAdd |= FWL_STYLEEXT_EDT_Justified;
    }
    if (dwStylExes & FWL_STYLEEXT_CMB_EditDistributed) {
        dwAdd |= FWL_STYLEEXT_EDT_Distributed;
    }
    m_pEdit->ModifyStylesEx(dwAdd, FWL_STYLEEXT_EDT_HAlignMask |
                            FWL_STYLEEXT_EDT_HAlignModeMask |
                            FWL_STYLEEXT_EDT_VAlignMask);
}
void CFWL_ComboBoxImp::ReSetListItemAlignment()
{
    _FWL_RETURN_IF_FAIL(m_pListBox);
    FX_DWORD dwStylExes = m_pProperties->m_dwStyleExes;
    FX_DWORD dwAdd = 0;
    switch (dwStylExes & FWL_STYLEEXT_CMB_ListItemAlignMask) {
        case FWL_STYLEEXT_CMB_ListItemCenterAlign: {
                dwAdd |= FWL_STYLEEXT_LTB_CenterAlign;
            }
        case FWL_STYLEEXT_CMB_ListItemRightAlign: {
                dwAdd |= FWL_STYLEEXT_LTB_RightAlign;
            }
        default: {
                dwAdd |= FWL_STYLEEXT_LTB_LeftAlign;
            }
    }
    m_pListBox->ModifyStylesEx(dwAdd, FWL_STYLEEXT_CMB_ListItemAlignMask);
}
void CFWL_ComboBoxImp::ProcessSelChanged(FX_BOOL bLButtonUp)
{
    IFWL_ComboBoxDP *pDatas = (IFWL_ComboBoxDP*)m_pProperties->m_pDataProvider;
    m_iCurSel = pDatas->GetItemIndex(m_pInterface, m_pListBox->GetSelItem(0));
    FX_BOOL bDropDown = IsDropDownStyle();
    if (bDropDown) {
        IFWL_ComboBoxDP *pData = (IFWL_ComboBoxDP*)m_pProperties->m_pDataProvider;
        FWL_HLISTITEM hItem = pData->GetItem(m_pInterface, m_iCurSel);
        if (hItem) {
            CFX_WideString wsText;
            pData->GetItemText(m_pInterface, hItem, wsText);
            if (m_pEdit) {
                m_pEdit->SetText(wsText);
                m_pEdit->Update();
                ((CFWL_ComboEdit*)((IFWL_TargetData*)m_pEdit)->GetData())->SetSelected();
            }
            CFWL_EvtCmbSelChanged ev;
            ev.bLButtonUp = bLButtonUp;
            ev.m_pSrcTarget = m_pInterface;
            ev.iArraySels.Add(m_iCurSel);
            DispatchEvent(&ev);
        }
    } else {
        Repaint(&m_rtClient);
    }
}
void CFWL_ComboBoxImp::InitProxyForm()
{
    _FWL_RETURN_IF_FAIL(!m_pForm);
    _FWL_RETURN_IF_FAIL(m_pListBox);
    CFWL_WidgetImpProperties propForm;
    propForm.m_pOwner = m_pInterface;
    propForm.m_dwStyles = FWL_WGTSTYLE_Popup;
    propForm.m_dwStates = FWL_WGTSTATE_Invisible;
    m_pProxy = FX_NEW CFWL_FormProxyImp(propForm, m_pListBox);
    m_pForm = IFWL_Form::Create();
    m_pProxy->SetInterface(m_pForm);
    ((IFWL_TargetData*)m_pForm)->SetData(m_pProxy);
    m_pProxy->Initialize();
    m_pListBox->SetParent((IFWL_Widget*)m_pForm);
    m_pListProxyDelegate = FX_NEW CFWL_ComboProxyImpDelegate(m_pForm, this);
    m_pProxy->SetDelegate((IFWL_WidgetDelegate*)m_pListProxyDelegate);
}
FWL_ERR CFWL_ComboBoxImp::DisForm_Initialize()
{
    _FWL_ERR_CHECK_RETURN_VALUE_IF_FAIL(CFWL_WidgetImp::Initialize(), FWL_WGTSTATE_Invisible);
    m_pDelegate = (IFWL_WidgetDelegate*)FX_NEW CFWL_ComboBoxImpDelegate(this);
    DisForm_InitComboList();
    DisForm_InitComboEdit();
    return FWL_ERR_Succeeded;
}
void CFWL_ComboBoxImp::DisForm_InitComboList()
{
    if (m_pListBox) {
        return;
    }
    CFWL_WidgetImpProperties prop;
    prop.m_pParent = (IFWL_Widget*)this->m_pInterface;
    prop.m_dwStyles = FWL_WGTSTYLE_Border | FWL_WGTSTYLE_VScroll;
    prop.m_dwStates = FWL_WGTSTATE_Invisible;
    prop.m_pDataProvider = m_pProperties->m_pDataProvider;
    prop.m_pThemeProvider = m_pProperties->m_pThemeProvider;
    CFWL_ComboList *pList = FX_NEW CFWL_ComboList(prop, m_pInterface);
    m_pListBox = IFWL_ListBox::Create();
    pList->SetInterface(m_pListBox);
    ((IFWL_TargetData*)m_pListBox)->SetData(pList);
    pList->Initialize();
}
void CFWL_ComboBoxImp::DisForm_InitComboEdit()
{
    if (m_pEdit) {
        return;
    }
    CFWL_WidgetImpProperties prop;
    prop.m_pParent = (IFWL_Widget*)this->m_pInterface;
    prop.m_pThemeProvider = m_pProperties->m_pThemeProvider;
    if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CMB_DropDown) == 0) {
    }
    CFWL_ComboEdit *pEdit = FX_NEW CFWL_ComboEdit(prop, m_pInterface);
    m_pEdit = IFWL_Edit::Create();
    pEdit->SetInterface(m_pEdit);
    ((IFWL_TargetData*)m_pEdit)->SetData(pEdit);
    pEdit->Initialize();
    pEdit->SetOuter(m_pInterface);
}
void CFWL_ComboBoxImp::DisForm_ShowDropList(FX_BOOL bActivate)
{
    FX_BOOL bDropList = DisForm_IsDropListShowed();
    if(bDropList == bActivate) {
        return;
    }
    if (bActivate) {
        CFWL_EvtCmbPreDropDown preEvent;
        preEvent.m_pSrcTarget = m_pInterface;
        DispatchEvent(&preEvent);
        CFWL_ComboList* pComboList = (CFWL_ComboList*)(((IFWL_TargetData*)m_pListBox)->GetData());
        int32_t iItems = pComboList->CountItems();
        if (iItems < 1) {
            return;
        }
        ReSetListItemAlignment();
        pComboList->ChangeSelected(m_iCurSel);
        FX_FLOAT fItemHeight = pComboList->GetItemHeigt();
        FX_FLOAT fBorder = GetBorderSize();
        FX_DWORD nWhere = 0;
        FX_FLOAT fPopupRet = 0.0f;
        FX_FLOAT fPopupMin = 0.0f;
        if (iItems > 3) {
            fPopupMin = fItemHeight * 3 + fBorder * 2;
        }
        FX_FLOAT fPopupMax = fItemHeight * iItems + fBorder * 2;
        CFX_RectF rtList;
        rtList.left = m_rtClient.left;
        rtList.width = m_pProperties->m_rtWidget.width;
        rtList.top = 0;
        rtList.height = 0;
        GetPopupPos(fPopupMin, fPopupMax, m_pProperties->m_rtWidget, rtList);
        m_pListBox->SetWidgetRect(rtList);
        m_pListBox->Update();
    } else {
        SetFocus(TRUE);
    }
    m_pListBox->SetStates(FWL_WGTSTATE_Invisible, !bActivate);
    if (bActivate) {
        CFWL_EvtCmbPostDropDown postEvent;
        postEvent.m_pSrcTarget = m_pInterface;
        DispatchEvent(&postEvent);
    }
    CFX_RectF rect;
    m_pListBox->GetWidgetRect(rect);
    rect.Inflate(2, 2);
    Repaint(&rect);
}
FX_BOOL CFWL_ComboBoxImp::DisForm_IsDropListShowed()
{
    return !(m_pListBox->GetStates() & FWL_WGTSTATE_Invisible);
}
FWL_ERR	CFWL_ComboBoxImp::DisForm_ModifyStylesEx(FX_DWORD dwStylesExAdded, FX_DWORD dwStylesExRemoved)
{
    if (!m_pEdit) {
        DisForm_InitComboEdit();
    }
    FX_BOOL bAddDropDown = dwStylesExAdded & FWL_STYLEEXT_CMB_DropDown;
    FX_BOOL bDelDropDown = dwStylesExRemoved & FWL_STYLEEXT_CMB_DropDown;
    dwStylesExRemoved &= ~FWL_STYLEEXT_CMB_DropDown;
    m_pProperties->m_dwStyleExes |= FWL_STYLEEXT_CMB_DropDown;
    if (bAddDropDown) {
        m_pEdit->ModifyStylesEx(0, FWL_STYLEEXT_EDT_ReadOnly);
    } else if (bDelDropDown) {
        m_pEdit->ModifyStylesEx(FWL_STYLEEXT_EDT_ReadOnly, 0);
    }
    return CFWL_WidgetImp::ModifyStylesEx(dwStylesExAdded, dwStylesExRemoved);
}
FWL_ERR CFWL_ComboBoxImp::DisForm_Update()
{
    if (m_iLock) {
        return FWL_ERR_Indefinite;
    }
    if (m_pEdit) {
        ReSetEditAlignment();
    }
    ReSetTheme();
    Layout();
    return FWL_ERR_Succeeded;
}
FX_DWORD CFWL_ComboBoxImp::DisForm_HitTest(FX_FLOAT fx, FX_FLOAT fy)
{
    CFX_RectF rect;
    rect.Set(0,
             0,
             m_pProperties->m_rtWidget.width - m_rtBtn.width,
             m_pProperties->m_rtWidget.height);
    if (rect.Contains(fx, fy)) {
        return FWL_WGTHITTEST_Edit;
    }
    if (m_rtBtn.Contains(fx, fy)) {
        return FWL_WGTHITTEST_Client;
    }
    if (DisForm_IsDropListShowed()) {
        m_pListBox->GetWidgetRect(rect);
        if (rect.Contains(fx, fy)) {
            return FWL_WGTHITTEST_Client;
        }
    }
    return FWL_WGTHITTEST_Unknown;
}
FWL_ERR CFWL_ComboBoxImp::DisForm_DrawWidget(CFX_Graphics *pGraphics, const CFX_Matrix *pMatrix)
{
    IFWL_ThemeProvider *pTheme = m_pProperties->m_pThemeProvider;
    CFX_Matrix mtOrg;
    mtOrg.Set(1, 0, 0, 1, 0, 0);
    if (pMatrix) {
        mtOrg = *pMatrix;
    }
    FX_BOOL bListShowed = m_pListBox && DisForm_IsDropListShowed();
    pGraphics->SaveGraphState();
    pGraphics->ConcatMatrix(&mtOrg);
    if (!m_rtBtn.IsEmpty(0.1f)) {
        CFWL_ThemeBackground param;
        param.m_pWidget = (IFWL_Widget*)this->m_pInterface;
        param.m_iPart = FWL_PART_CMB_DropDownButton;
        param.m_dwStates = m_iBtnState;
        param.m_pGraphics = pGraphics;
        param.m_rtPart = m_rtBtn;
        pTheme->DrawBackground(&param);
    }
    pGraphics->RestoreGraphState();
    if (m_pEdit) {
        CFX_RectF rtEdit;
        m_pEdit->GetWidgetRect(rtEdit);
        CFX_Matrix mt;
        mt.Set(1, 0, 0, 1, rtEdit.left, rtEdit.top);
        mt.Concat(mtOrg);
        m_pEdit->DrawWidget(pGraphics, &mt);
    }
    if (bListShowed) {
        CFX_RectF rtList;
        m_pListBox->GetWidgetRect(rtList);
        CFX_Matrix mt;
        mt.Set(1, 0, 0, 1, rtList.left, rtList.top);
        mt.Concat(mtOrg);
        m_pListBox->DrawWidget(pGraphics, &mt);
    }
    return FWL_ERR_Succeeded;
}
FWL_ERR CFWL_ComboBoxImp::DisForm_GetBBox(CFX_RectF &rect)
{
    rect = m_pProperties->m_rtWidget;
    if (m_pListBox && DisForm_IsDropListShowed()) {
        CFX_RectF rtList;
        m_pListBox->GetWidgetRect(rtList);
        rtList.Offset(rect.left, rect.top);
        rect.Union(rtList);
    }
    return FWL_ERR_Succeeded;
}
void CFWL_ComboBoxImp::DisForm_Layout()
{
    GetClientRect(m_rtClient);
    m_rtContent = m_rtClient;
    FX_FLOAT *pFWidth = (FX_FLOAT*)GetThemeCapacity(FWL_WGTCAPACITY_ScrollBarWidth);
    _FWL_RETURN_IF_FAIL(pFWidth);
    FX_FLOAT borderWidth = 0;
    {
        borderWidth = FWL_PART_CMB_Border;
    }
    FX_FLOAT fBtn = *pFWidth;
    if (!(this->GetStylesEx() & FWL_STYLEEXT_CMB_ReadOnly)) {
        m_rtBtn.Set(m_rtClient.right() - fBtn, m_rtClient.top + borderWidth,
                    fBtn - borderWidth, m_rtClient.height - 2 * borderWidth);
    }
    CFX_RectF* pUIMargin = (CFX_RectF*)GetThemeCapacity(FWL_WGTCAPACITY_UIMargin);
    if (pUIMargin) {
        m_rtContent.Deflate(pUIMargin->left, pUIMargin->top, pUIMargin->width, pUIMargin->height);
    }
    FX_BOOL bIsDropDown = IsDropDownStyle();
    if (bIsDropDown && m_pEdit) {
        CFX_RectF rtEdit;
        rtEdit.Set(m_rtContent.left,
                   m_rtContent.top, m_rtContent.width - fBtn, m_rtContent.height);
        m_pEdit->SetWidgetRect(rtEdit);
        if (m_iCurSel >= 0) {
            CFX_WideString wsText;
            IFWL_ComboBoxDP *pData = (IFWL_ComboBoxDP *)m_pProperties->m_pDataProvider;
            FWL_HLISTITEM hItem = pData->GetItem(m_pInterface, m_iCurSel);
            ((CFWL_ComboList*)((IFWL_TargetData*)m_pListBox)->GetData())->GetItemText(hItem, wsText);
            m_pEdit->LockUpdate();
            m_pEdit->SetText(wsText);
            m_pEdit->UnlockUpdate();
        }
        m_pEdit->Update();
    }
}
CFWL_ComboBoxImpDelegate::CFWL_ComboBoxImpDelegate(CFWL_ComboBoxImp *pOwner)
    : m_pOwner(pOwner)
{
}
int32_t CFWL_ComboBoxImpDelegate::OnProcessMessage(CFWL_Message *pMessage)
{
    if (m_pOwner->m_pWidgetMgr->IsFormDisabled()) {
        return DisForm_OnProcessMessage(pMessage);
    }
    _FWL_RETURN_VALUE_IF_FAIL(pMessage, 0);
    FX_DWORD dwMsgCode = pMessage->GetClassID();
    FX_BOOL iRet = 1;
    switch (dwMsgCode) {
        case FWL_MSGHASH_SetFocus:
        case FWL_MSGHASH_KillFocus: {
                OnFocusChanged(pMessage, dwMsgCode == FWL_MSGHASH_SetFocus);
                break;
            }
        case FWL_MSGHASH_Mouse: {
                CFWL_MsgMouse *pMsg = (CFWL_MsgMouse*)pMessage;
                FX_DWORD dwCmd = pMsg->m_dwCmd;
                switch(dwCmd) {
                    case FWL_MSGMOUSECMD_LButtonDown: {
                            OnLButtonDown(pMsg);
                            break;
                        }
                    case FWL_MSGMOUSECMD_LButtonUp: {
                            OnLButtonUp(pMsg);
                            break;
                        }
                    case FWL_MSGMOUSECMD_MouseMove: {
                            OnMouseMove(pMsg);
                            break;
                        }
                    case FWL_MSGMOUSECMD_MouseLeave: {
                            OnMouseLeave(pMsg);
                            break;
                        }
                    default: {
                        }
                }
                break;
            }
        case FWL_MSGHASH_Key: {
                OnKey((CFWL_MsgKey*)pMessage);
                break;
            }
        default: {
                iRet = 0;
            }
    }
    CFWL_WidgetImpDelegate::OnProcessMessage(pMessage);
    return iRet;
}
FWL_ERR	CFWL_ComboBoxImpDelegate::OnProcessEvent(CFWL_Event *pEvent)
{
    FX_DWORD dwFlag = pEvent->GetClassID();
    if (dwFlag == FWL_EVTHASH_LTB_DrawItem) {
        CFWL_EvtCmbDrawItem pTemp;
        pTemp.m_pSrcTarget = m_pOwner->m_pInterface;
        pTemp.m_pGraphics = ((CFWL_EvtLtbDrawItem *)pEvent)->m_pGraphics;
        pTemp.m_index = ((CFWL_EvtLtbDrawItem *)pEvent)->m_index;
        pTemp.m_rtItem = ((CFWL_EvtLtbDrawItem *)pEvent)->m_rect;
        m_pOwner->DispatchEvent(&pTemp);
    } else if (dwFlag == FWL_EVTHASH_Scroll) {
        FX_DWORD dwScrollCode = ((CFWL_EvtScroll*)pEvent)->m_iScrollCode;
        FX_FLOAT fPos = ((CFWL_EvtScroll*)pEvent)->m_fPos;
        CFWL_EvtScroll pScrollEv;
        pScrollEv.m_pSrcTarget = m_pOwner->m_pInterface;
        pScrollEv.m_iScrollCode = dwScrollCode;
        pScrollEv.m_fPos = fPos;
        m_pOwner->DispatchEvent(&pScrollEv);
    } else if (dwFlag == FWL_EVTHASH_EDT_TextChanged) {
        CFWL_EvtCmbEditChanged pTemp;
        pTemp.m_pSrcTarget = m_pOwner->m_pInterface;
        pTemp.wsInsert = ((CFWL_EvtEdtTextChanged *)pEvent)->wsInsert;
        pTemp.wsDelete = ((CFWL_EvtEdtTextChanged *)pEvent)->wsDelete;
        pTemp.nChangeType = ((CFWL_EvtEdtTextChanged *)pEvent)->nChangeType;
        m_pOwner->DispatchEvent(&pTemp);
    }
    return FWL_ERR_Succeeded;
}
FWL_ERR CFWL_ComboBoxImpDelegate::OnDrawWidget(CFX_Graphics *pGraphics, const CFX_Matrix *pMatrix)
{
    return m_pOwner->DrawWidget(pGraphics, pMatrix);
}
void CFWL_ComboBoxImpDelegate::OnFocusChanged(CFWL_Message *pMsg, FX_BOOL bSet )
{
    IFWL_Target *pDstTarget = pMsg->m_pDstTarget;
    IFWL_Target *pSrcTarget = pMsg->m_pSrcTarget;
    FX_BOOL bDropDown = m_pOwner->IsDropDownStyle();
    if (bSet) {
        m_pOwner->m_pProperties->m_dwStates |= FWL_WGTSTATE_Focused;
        if (bDropDown && pSrcTarget != (IFWL_Widget*)m_pOwner->m_pListBox) {
            _FWL_RETURN_IF_FAIL(m_pOwner->m_pEdit);
            ((CFWL_ComboEdit*)((IFWL_TargetData*)m_pOwner->m_pEdit)->GetData())->SetSelected();
        } else {
            m_pOwner->Repaint(&m_pOwner->m_rtClient);
        }
    } else {
        m_pOwner->m_pProperties->m_dwStates &= ~FWL_WGTSTATE_Focused;
        if (bDropDown && pDstTarget != (IFWL_Widget*)m_pOwner->m_pListBox) {
            _FWL_RETURN_IF_FAIL(m_pOwner->m_pEdit);
            ((CFWL_ComboEdit*)((IFWL_TargetData*)m_pOwner->m_pEdit)->GetData())->FlagFocus(FALSE);
            ((CFWL_ComboEdit*)((IFWL_TargetData*)m_pOwner->m_pEdit)->GetData())->ClearSelected();
        } else {
            m_pOwner->Repaint(&m_pOwner->m_rtClient);
        }
    }
}
void CFWL_ComboBoxImpDelegate::OnLButtonDown(CFWL_MsgMouse *pMsg)
{
    if (m_pOwner->m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) {
        return;
    }
    FX_BOOL bDropDown = m_pOwner->IsDropDownStyle();
    CFX_RectF& rtBtn = bDropDown ? m_pOwner->m_rtBtn : m_pOwner->m_rtClient;
    FX_BOOL bClickBtn = rtBtn.Contains(pMsg->m_fx, pMsg->m_fy);
    if (bClickBtn) {
        if (bDropDown && m_pOwner->m_pEdit) {
            m_pOwner->MatchEditText();
        }
        m_pOwner->m_bLButtonDown = TRUE;
        m_pOwner->m_iBtnState = FWL_PARTSTATE_CMB_Pressed;
        m_pOwner->Repaint(&m_pOwner->m_rtClient);
        m_pOwner->ShowDropList(TRUE);
        m_pOwner->m_iBtnState = FWL_PARTSTATE_CMB_Normal;
        m_pOwner->Repaint(&m_pOwner->m_rtClient);
    }
}
void CFWL_ComboBoxImpDelegate::OnLButtonUp(CFWL_MsgMouse *pMsg)
{
    m_pOwner->m_bLButtonDown = FALSE;
    if (m_pOwner->m_rtBtn.Contains(pMsg->m_fx, pMsg->m_fy)) {
        m_pOwner->m_iBtnState = FWL_PARTSTATE_CMB_Hovered;
    } else {
        m_pOwner->m_iBtnState = FWL_PARTSTATE_CMB_Normal;
    }
    m_pOwner->Repaint(&m_pOwner->m_rtBtn);
}
void CFWL_ComboBoxImpDelegate::OnMouseMove(CFWL_MsgMouse *pMsg)
{
    int32_t iOldState = m_pOwner->m_iBtnState;
    if (m_pOwner->m_rtBtn.Contains(pMsg->m_fx, pMsg->m_fy)) {
        m_pOwner->m_iBtnState = m_pOwner->m_bLButtonDown ? FWL_PARTSTATE_CMB_Pressed : FWL_PARTSTATE_CMB_Hovered;
    } else {
        m_pOwner->m_iBtnState = FWL_PARTSTATE_CMB_Normal;
    }
    if (  (iOldState != m_pOwner->m_iBtnState) &&
            !((m_pOwner->m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) == FWL_WGTSTATE_Disabled)) {
        m_pOwner->Repaint(&m_pOwner->m_rtBtn);
    }
}
void CFWL_ComboBoxImpDelegate::OnMouseLeave(CFWL_MsgMouse *pMsg)
{
    if (!m_pOwner->IsDropListShowed() &&
            !((m_pOwner->m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) == FWL_WGTSTATE_Disabled)) {
        m_pOwner->m_iBtnState = FWL_PARTSTATE_CMB_Normal;
        m_pOwner->Repaint(&m_pOwner->m_rtBtn);
    }
}
void CFWL_ComboBoxImpDelegate::OnKey(CFWL_MsgKey *pMsg)
{
    FX_DWORD dwKeyCode = pMsg->m_dwKeyCode;
    if (dwKeyCode == FWL_VKEY_Tab) {
        m_pOwner->DispatchKeyEvent(pMsg);
        return;
    }
    FX_BOOL bSubCtrlKey = pMsg->m_pDstTarget == m_pOwner->m_pInterface;
    if (bSubCtrlKey) {
        DoSubCtrlKey(pMsg);
    }
}
void CFWL_ComboBoxImpDelegate::DoSubCtrlKey(CFWL_MsgKey *pMsg)
{
    FX_DWORD dwKeyCode = pMsg->m_dwKeyCode;
    FX_BOOL bUp = dwKeyCode == FWL_VKEY_Up;
    FX_BOOL bDown = dwKeyCode == FWL_VKEY_Down;
    if (bUp || bDown) {
        int32_t iCount = ((CFWL_ComboList*)((IFWL_TargetData*)m_pOwner->m_pListBox)->GetData())->CountItems();
        if (iCount < 1) {
            return;
        }
        FX_BOOL bMatchEqual = FALSE;
        int32_t iCurSel = m_pOwner->m_iCurSel;
        FX_BOOL bDropDown = m_pOwner->IsDropDownStyle();
        if (bDropDown && m_pOwner->m_pEdit) {
            CFX_WideString wsText;
            m_pOwner->m_pEdit->GetText(wsText);
            iCurSel = ((CFWL_ComboList*)((IFWL_TargetData*)m_pOwner->m_pListBox)->GetData())->MatchItem(wsText);
            if (iCurSel >= 0) {
                CFX_WideString wsTemp;
                IFWL_ComboBoxDP *pData = (IFWL_ComboBoxDP *)m_pOwner->m_pProperties->m_pDataProvider;
                FWL_HLISTITEM hItem = pData->GetItem(m_pOwner->m_pInterface, iCurSel);
                ((CFWL_ComboList*)((IFWL_TargetData*)m_pOwner->m_pListBox)->GetData())->GetItemText(hItem, wsTemp);
                bMatchEqual = wsText.Equal(wsTemp);
            }
        }
        if (iCurSel < 0) {
            iCurSel = 0;
        } else if (!bDropDown || bMatchEqual) {
            if ((bUp && iCurSel == 0) || (bDown && iCurSel == iCount - 1)) {
                return;
            }
            if (bUp) {
                iCurSel --;
            } else {
                iCurSel ++;
            }
        }
        m_pOwner->m_iCurSel = iCurSel;
        if (bDropDown && m_pOwner->m_pEdit) {
            m_pOwner->SynchrEditText(m_pOwner->m_iCurSel);
        } else {
            m_pOwner->Repaint(&m_pOwner->m_rtClient);
        }
        return;
    }
    FX_BOOL bDropDown = m_pOwner->IsDropDownStyle();
    if (bDropDown) {
        IFWL_WidgetDelegate *pDelegate = m_pOwner->m_pEdit->SetDelegate(NULL);
        pDelegate->OnProcessMessage(pMsg);
    }
}
int32_t CFWL_ComboBoxImpDelegate::DisForm_OnProcessMessage(CFWL_Message *pMessage)
{
    _FWL_RETURN_VALUE_IF_FAIL(pMessage, 0);
    FX_DWORD dwMsgCode = pMessage->GetClassID();
    FX_BOOL backDefault = TRUE;
    switch (dwMsgCode) {
        case FWL_MSGHASH_SetFocus:
        case FWL_MSGHASH_KillFocus: {
                backDefault = FALSE;
                DisForm_OnFocusChanged(pMessage, dwMsgCode == FWL_MSGHASH_SetFocus);
                break;
            }
        case FWL_MSGHASH_Mouse: {
                backDefault = FALSE;
                CFWL_MsgMouse *pMsg = (CFWL_MsgMouse*)pMessage;
                FX_DWORD dwCmd = pMsg->m_dwCmd;
                switch(dwCmd) {
                    case FWL_MSGMOUSECMD_LButtonDown: {
                            DisForm_OnLButtonDown(pMsg);
                            break;
                        }
                    case FWL_MSGMOUSECMD_LButtonUp: {
                            OnLButtonUp(pMsg);
                            break;
                        }
                    default: {
                        }
                }
                break;
            }
        case FWL_MSGHASH_Key: {
                backDefault = FALSE;
                CFWL_MsgKey *pKey = (CFWL_MsgKey*)pMessage;
                if (pKey->m_dwCmd == FWL_MSGKEYCMD_KeyUp) {
                    break;
                }
                if (m_pOwner->DisForm_IsDropListShowed() && pKey->m_dwCmd == FWL_MSGKEYCMD_KeyDown) {
                    FX_DWORD dwKeyCode = pKey->m_dwKeyCode;
                    FX_BOOL bListKey = dwKeyCode == FWL_VKEY_Up ||
                                       dwKeyCode == FWL_VKEY_Down ||
                                       dwKeyCode == FWL_VKEY_Return ||
                                       dwKeyCode == FWL_VKEY_Escape;
                    if (bListKey) {
                        IFWL_WidgetDelegate *pDelegate = m_pOwner->m_pListBox->SetDelegate(NULL);
                        pDelegate->OnProcessMessage(pMessage);
                        break;
                    }
                }
                DisForm_OnKey((CFWL_MsgKey*)pMessage);
                break;
            }
        default: {
            }
    }
    if (!backDefault) {
        return 1;
    }
    return CFWL_WidgetImpDelegate::OnProcessMessage(pMessage);
}
void CFWL_ComboBoxImpDelegate::DisForm_OnLButtonDown(CFWL_MsgMouse *pMsg)
{
    FX_BOOL bDropDown = m_pOwner->DisForm_IsDropListShowed();
    CFX_RectF& rtBtn = bDropDown ? m_pOwner->m_rtBtn : m_pOwner->m_rtClient;
    FX_BOOL bClickBtn = rtBtn.Contains(pMsg->m_fx, pMsg->m_fy);
    if (bClickBtn) {
        if (m_pOwner->DisForm_IsDropListShowed()) {
            m_pOwner->DisForm_ShowDropList(FALSE);
            return;
        }
        {
            if (m_pOwner->m_pEdit) {
                m_pOwner->MatchEditText();
            }
            m_pOwner->DisForm_ShowDropList(TRUE);
        }
    }
}
void CFWL_ComboBoxImpDelegate::DisForm_OnFocusChanged(CFWL_Message *pMsg, FX_BOOL bSet)
{
    IFWL_Target *pDstTarget = pMsg->m_pDstTarget;
    IFWL_Target *pSrcTarget = pMsg->m_pSrcTarget;
    FX_BOOL bDropDown = m_pOwner->IsDropDownStyle();
    if (bSet) {
        m_pOwner->m_pProperties->m_dwStates |= FWL_WGTSTATE_Focused;
        if ((m_pOwner->m_pEdit->GetStates() & FWL_WGTSTATE_Focused) == 0) {
            CFWL_MsgSetFocus msg;
            msg.m_pDstTarget = m_pOwner->m_pEdit;
            msg.m_pSrcTarget = NULL;
            IFWL_WidgetDelegate *pDelegate = m_pOwner->m_pEdit->SetDelegate(NULL);
            pDelegate->OnProcessMessage(&msg);
        }
    } else {
        m_pOwner->m_pProperties->m_dwStates &= ~FWL_WGTSTATE_Focused;
        m_pOwner->DisForm_ShowDropList(FALSE);
        CFWL_MsgKillFocus msg;
        msg.m_pDstTarget = NULL;
        msg.m_pSrcTarget = m_pOwner->m_pEdit;
        IFWL_WidgetDelegate *pDelegate = m_pOwner->m_pEdit->SetDelegate(NULL);
        pDelegate->OnProcessMessage(&msg);
    }
}
void CFWL_ComboBoxImpDelegate::DisForm_OnKey(CFWL_MsgKey *pMsg)
{
    FX_DWORD dwKeyCode = pMsg->m_dwKeyCode;
    FX_BOOL bUp = dwKeyCode == FWL_VKEY_Up;
    FX_BOOL bDown = dwKeyCode == FWL_VKEY_Down;
    if (bUp || bDown) {
        CFWL_ComboList* pComboList = ((CFWL_ComboList*)((IFWL_TargetData*)(m_pOwner->m_pListBox))->GetData());
        int32_t iCount = pComboList->CountItems();
        if (iCount < 1) {
            return;
        }
        FX_BOOL bMatchEqual = FALSE;
        int32_t iCurSel = m_pOwner->m_iCurSel;
        if (m_pOwner->m_pEdit) {
            CFX_WideString wsText;
            m_pOwner->m_pEdit->GetText(wsText);
            iCurSel = pComboList->MatchItem(wsText);
            if (iCurSel >= 0) {
                CFX_WideString wsTemp;
                FWL_HLISTITEM item = m_pOwner->m_pListBox->GetSelItem(iCurSel);
                m_pOwner->m_pListBox->GetItemText(item, wsTemp);
                bMatchEqual = wsText.Equal(wsTemp);
            }
        }
        if (iCurSel < 0) {
            iCurSel = 0;
        } else if (bMatchEqual) {
            if ((bUp && iCurSel == 0) || (bDown && iCurSel == iCount - 1)) {
                return;
            }
            if (bUp) {
                iCurSel --;
            } else {
                iCurSel ++;
            }
        }
        m_pOwner->m_iCurSel = iCurSel;
        m_pOwner->SynchrEditText(m_pOwner->m_iCurSel);
        return;
    }
    if (m_pOwner->m_pEdit) {
        IFWL_WidgetDelegate *pDelegate = m_pOwner->m_pEdit->SetDelegate(NULL);
        pDelegate->OnProcessMessage(pMsg);
    }
}
CFWL_ComboProxyImpDelegate::CFWL_ComboProxyImpDelegate(IFWL_Form *pForm, CFWL_ComboBoxImp *pComboBox)
    : m_pForm(pForm)
    , m_pComboBox(pComboBox)
    , m_bLButtonDown(FALSE)
    , m_bLButtonUpSelf(FALSE)
    , m_fStartPos(0)
{
}
int32_t CFWL_ComboProxyImpDelegate::OnProcessMessage(CFWL_Message *pMessage)
{
    _FWL_RETURN_VALUE_IF_FAIL(pMessage, 0);
    FX_DWORD dwMsgCode = pMessage->GetClassID();
    if (dwMsgCode == FWL_MSGHASH_Mouse) {
        CFWL_MsgMouse *pMsg = (CFWL_MsgMouse*)pMessage;
        FX_DWORD dwCmd = pMsg->m_dwCmd;
        switch(dwCmd) {
            case FWL_MSGMOUSECMD_LButtonDown: {
                    OnLButtonDown(pMsg);
                    break;
                }
            case FWL_MSGMOUSECMD_LButtonUp: {
                    OnLButtonUp(pMsg);
                    break;
                }
            case FWL_MSGMOUSECMD_MouseMove: {
                    OnMouseMove(pMsg);
                    break;
                }
            default: {
                }
        }
    }
    if (dwMsgCode == FWL_MSGHASH_Deactivate) {
        OnDeactive((CFWL_MsgDeactivate*)pMessage);
    }
    if (dwMsgCode == FWL_MSGHASH_KillFocus || dwMsgCode == FWL_MSGHASH_SetFocus) {
        OnFocusChanged((CFWL_MsgKillFocus*)pMessage, dwMsgCode == FWL_MSGHASH_SetFocus);
    }
    return CFWL_WidgetImpDelegate::OnProcessMessage(pMessage);
}
FWL_ERR CFWL_ComboProxyImpDelegate::OnDrawWidget(CFX_Graphics *pGraphics, const CFX_Matrix *pMatrix)
{
    m_pComboBox->DrawStretchHandler(pGraphics, pMatrix);
    return FWL_ERR_Succeeded;
}
void CFWL_ComboProxyImpDelegate::OnLButtonDown(CFWL_MsgMouse *pMsg)
{
    IFWL_NoteThread *pThread = m_pForm->GetOwnerThread();
    _FWL_RETURN_IF_FAIL(pThread);
    CFWL_NoteDriver *pDriver = (CFWL_NoteDriver*)pThread->GetNoteDriver();
    CFX_RectF rtWidget;
    m_pForm->GetWidgetRect(rtWidget);
    rtWidget.left = rtWidget.top = 0;
    if (rtWidget.Contains(pMsg->m_fx, pMsg->m_fy)) {
        m_bLButtonDown = TRUE;
        pDriver->SetGrab(m_pForm, TRUE);
    } else {
        m_bLButtonDown = FALSE;
        pDriver->SetGrab(m_pForm, FALSE);
        m_pComboBox->ShowDropList(FALSE);
        return;
    }
    IFWL_AdapterNative *pNative = FWL_GetAdapterNative();
    IFWL_AdapterCursorMgr *pCursorMgr = pNative->GetCursorMgr();
    FWL_HCURSOR hCursor = pCursorMgr->GetSystemCursor(FWL_CURSORTYPE_SizeNS);
    pCursorMgr->SetCursor(hCursor);
    pCursorMgr->ShowCursor(TRUE);
    m_pForm->TransformTo(NULL, pMsg->m_fx, pMsg->m_fy);
    m_fStartPos = pMsg->m_fy;
}
void CFWL_ComboProxyImpDelegate::OnLButtonUp(CFWL_MsgMouse *pMsg)
{
    m_bLButtonDown = FALSE;
    IFWL_NoteThread *pThread = m_pForm->GetOwnerThread();
    _FWL_RETURN_IF_FAIL(pThread);
    CFWL_NoteDriver *pDriver = (CFWL_NoteDriver*)pThread->GetNoteDriver();
    pDriver->SetGrab(m_pForm, FALSE);
    if (m_bLButtonUpSelf) {
        CFX_RectF rect;
        m_pForm->GetWidgetRect(rect);
        rect.left = rect.top = 0;
        if (!rect.Contains(pMsg->m_fx, pMsg->m_fy) && m_pComboBox->IsDropListShowed()) {
            m_pComboBox->ShowDropList(FALSE);
        }
    } else {
        m_bLButtonUpSelf = TRUE;
    }
}
void CFWL_ComboProxyImpDelegate::OnMouseMove(CFWL_MsgMouse *pMsg)
{
    IFWL_AdapterNative *pNative = FWL_GetAdapterNative();
    IFWL_AdapterCursorMgr *pCursorMgr = pNative->GetCursorMgr();
    FWL_CURSORTYPE cursorType = FWL_CURSORTYPE_Arrow;
    if (m_pComboBox->m_rtHandler.Contains(pMsg->m_fx, pMsg->m_fy)) {
        cursorType = FWL_CURSORTYPE_SizeNS;
    }
    FWL_HCURSOR hCursor = pCursorMgr->GetSystemCursor(cursorType);
    pCursorMgr->SetCursor(hCursor);
    pCursorMgr->ShowCursor(TRUE);
    if (!m_bLButtonDown) {
        return;
    }
    m_pForm->TransformTo(NULL, pMsg->m_fx, pMsg->m_fy);
    FX_FLOAT fChanged = pMsg->m_fy - m_fStartPos;
    if (m_pComboBox->m_bUpFormHandler) {
        fChanged = m_fStartPos - pMsg->m_fy;
    }
    if (m_pComboBox->m_rtList.height + fChanged < m_pComboBox->m_fItemHeight) {
        return;
    }
    m_pComboBox->m_rtList.height += fChanged;
    m_pComboBox->m_rtProxy.height += fChanged;
    if (m_pComboBox->m_bUpFormHandler) {
        m_pComboBox->m_rtProxy.top -= fChanged;
        m_pComboBox->m_rtHandler.Set(0,
                                     0,
                                     m_pComboBox->m_rtList.width,
                                     m_pComboBox->m_fComboFormHandler);
    } else {
        m_pComboBox->m_rtHandler.Set(0,
                                     m_pComboBox->m_rtList.height,
                                     m_pComboBox->m_rtList.width,
                                     m_pComboBox->m_fComboFormHandler);
    }
    m_pForm->SetWidgetRect(m_pComboBox->m_rtProxy);
    m_pComboBox->m_pListBox->SetWidgetRect(m_pComboBox->m_rtList);
    m_pComboBox->m_pListBox->Update();
    m_fStartPos = pMsg->m_fy;
}
void CFWL_ComboProxyImpDelegate::OnDeactive(CFWL_MsgDeactivate *pMsg)
{
    m_pComboBox->ShowDropList(FALSE);
}
void CFWL_ComboProxyImpDelegate::OnFocusChanged(CFWL_MsgKillFocus *pMsg, FX_BOOL bSet )
{
    if (!bSet) {
        if (pMsg->m_pSetFocus == NULL) {
            m_pComboBox->ShowDropList(FALSE);
        }
    }
}