// UserDropTarget.cpp: implementation of the CUserDropTarget class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "CorpSms.h"
#include "UserDropTarget.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

#define RECT_BORDER	10

#include "CorpSmsDoc.h"
#include "FuncView.h"

HWND CUserDropTarget::m_shWndTreeCtrl = NULL;
long CUserDropTarget::m_lAddressType = -1;
CUserDropTarget::CUserDropTarget()
{

}

CUserDropTarget::~CUserDropTarget()
{

}
DROPEFFECT CUserDropTarget::OnDragEnter(CWnd* pWnd, COleDataObject* pDataObject,
			DWORD dwKeyState, CPoint point)
{
	DROPEFFECT dropeffectRet = DROPEFFECT_COPY;
	if ( (dwKeyState & MK_SHIFT) == MK_SHIFT)
		dropeffectRet = DROPEFFECT_MOVE;
	return dropeffectRet;
}

DROPEFFECT CUserDropTarget::OnDragOver(CWnd* pWnd, COleDataObject* pDataObject,
			DWORD dwKeyState, CPoint point)
{
	DROPEFFECT dropeffectRet = DROPEFFECT_COPY;
	if ( (dwKeyState & MK_SHIFT) == MK_SHIFT)
		dropeffectRet = DROPEFFECT_MOVE;

	if ( m_shWndTreeCtrl != pWnd->GetSafeHwnd() )  //拖动的目标不是自己，应该是拖住发送列表的，不处理
		return dropeffectRet;

	// Expand and highlight the item under the mouse and 
	CTreeCtrl * pTreeCtrl = (CTreeCtrl *)pWnd;
	HTREEITEM hTItem = pTreeCtrl->HitTest(point);
	if ( hTItem != NULL && m_shWndTreeCtrl )  //判断只有在本通讯录内才可以自由拖动
	{
		CFuncView * pFuncView = (CFuncView*)CFuncView::FromHandle(m_shWndTreeCtrl);
		if ( pFuncView->GetItemAddressType(hTItem)==m_lAddressType)
		{
			pTreeCtrl->Expand(hTItem, TVE_EXPAND);
			pTreeCtrl->SelectDropTarget(hTItem);
		}
	}	
	// Scroll Tree control depending on mouse position
	CRect rectClient;
	pWnd->GetClientRect(&rectClient);
	pWnd->ClientToScreen(rectClient);
	pWnd->ClientToScreen(&point);
	int nScrollDir = -1;
	if ( point.y >= rectClient.bottom - RECT_BORDER)
		nScrollDir = SB_LINEDOWN;
	else
	if ( (point.y <= rectClient.top + RECT_BORDER) )
		nScrollDir = SB_LINEUP;

	
	if ( nScrollDir != -1 ) 
	{
		int nScrollPos = pWnd->GetScrollPos(SB_VERT);
		WPARAM wParam = MAKELONG(nScrollDir, nScrollPos);
		pWnd->SendMessage(WM_VSCROLL, wParam);
	}
	
	nScrollDir = -1;
	if ( point.x <= rectClient.left + RECT_BORDER )
		nScrollDir = SB_LINELEFT;
	else
	if ( point.x >= rectClient.right - RECT_BORDER)
		nScrollDir = SB_LINERIGHT;
	
	if ( nScrollDir != -1 ) 
	{
		int nScrollPos = pWnd->GetScrollPos(SB_VERT);
		WPARAM wParam = MAKELONG(nScrollDir, nScrollPos);
		pWnd->SendMessage(WM_HSCROLL, wParam);
	}
	return dropeffectRet;
}

BOOL CUserDropTarget::OnDrop(CWnd* pWnd, COleDataObject* pDataObject,
			DROPEFFECT dropEffect, CPoint point)
{
/*
	if (pWnd->IsKindOf(RUNTIME_CLASS(CView)))//if CView,Call base class
		return COleDropTarget::OnDrop(pWnd, pDataObject,dropEffect,point);
*/
	if ( m_shWndTreeCtrl != pWnd->GetSafeHwnd() )  //拖动的目标不是自己，应该是拖住发送列表的，不处理
		return ::SendMessage( pWnd->GetSafeHwnd(), DROPM_DROP, (WPARAM)pDataObject, 0 );

	if ( !m_shWndTreeCtrl || !pWnd )
	{
		return false;
	}
	//处理拖动
	CFuncView * pFuncView = (CFuncView*)CFuncView::FromHandle(m_shWndTreeCtrl);
	CTreeCtrl * pTreeCtrl = (CTreeCtrl *)pWnd;
	HTREEITEM hSelectedItem = pTreeCtrl->GetSelectedItem();
	HTREEITEM hTDropItem =pTreeCtrl->GetDropHilightItem();

	pFuncView->MoveItem(hSelectedItem,hTDropItem,m_lAddressType);
/*	
	// Get the image indexes from ImageList, if one exists
	int nImage = 0;
	int nSelImage = 0;
	GetItemImages(hSelectedItem, nImage, nSelImage);
	
	// Add the items to destination tree control
	m_hDestItem = m_pDestTreeCtrl->AddItem(hTDropItem, m_pSourceTreeCtrl->GetItemText(hSelectedItem), TVI_LAST, nImage, nSelImage, 0);
	AddItem(m_pSourceTreeCtrl->GetChildItem(hSelectedItem),m_hDestItem);
*/	
	//Remove highlighting
	pTreeCtrl->SendMessage(TVM_SELECTITEM, TVGN_DROPHILITE,0);

	return true;
}

void CUserDropTarget::OnDragLeave(CWnd* pWnd)
{
/*
	// Remove Highlighting 
	CTreeCtrl *  pTreeCtrl= (CTreeCtrl *)pWnd;
	pTreeCtrl->SendMessage(TVM_SELECTITEM, TVGN_DROPHILITE,0);
*/	
}
/*
DROPEFFECT CUserDropTarget::OnDropEx(CWnd* pWnd, COleDataObject* pDataObject,
			DROPEFFECT dropEffect, DROPEFFECT dropEffectList, CPoint point)
{
	if (pWnd->IsKindOf(RUNTIME_CLASS(CView)))//if CView,Call base class
		return COleDropTarget::OnDropEx( pWnd, pDataObject, dropEffect, dropEffectList, point) ;

	return -1;
}
*/