lyfz_repos/经典版源码/MonitoringCenter/DB/GridCtrl/InPlaceEdit.cpp

// InPlaceEdit.cpp : implementation file
//
// Adapted by Chris Maunder <cmaunder@mail.com>
// Copyright (c) 1998-2001. All Rights Reserved.
//
// The code contained in this file is based on the original
// CInPlaceEdit from http://www.codeguru.com/listview/edit_subitems.shtml
//
// This code may be used in compiled form in any way you desire. This
// file may be redistributed unmodified by any means PROVIDING it is 
// not sold for profit without the authors written consent, and 
// providing that this notice and the authors name and all copyright 
// notices remains intact. 
//
// An email letting me know how you are using it would be nice as well. 
//
// This file is provided "as is" with no expressed or implied warranty.
// The author accepts no liability for any damage/loss of business that
// this product may cause.
//
// For use with CGridCtrl v2.10+
//
// History:
//         10 May 1998  Uses GVN_ notifications instead of LVN_,
//                      Sends notification messages to the parent, 
//                      instead of the parent's parent.
//         15 May 1998  There was a problem when editing with the in-place editor, 
//                      there arises a general protection fault in user.exe, with a 
//                      few qualifications:
//                         (1) This only happens with owner-drawn buttons;
//                         (2) This only happens in Win95
//                         (3) This only happens if the handler for the button does not 
//                             create a new window (even an AfxMessageBox will avoid the 
//                             crash)
//                         (4) This will not happen if Spy++ is running.
//                      PreTranslateMessage was added to route messages correctly.
//                      (Matt Weagle found and fixed this problem)
//         26 Jul 1998  Removed the ES_MULTILINE style - that fixed a few probs!
//          6 Aug 1998  Added nID to the constructor param list
//          6 Sep 1998  Space no longer clears selection when starting edit (Franco Bez)
//         10 Apr 1999  Enter, Tab and Esc key prob fixed (Koay Kah Hoe)
//                      Workaround for bizzare "shrinking window" problem in CE
//
/////////////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "TCHAR.h"
#include "InPlaceEdit.h"

#include "GridCtrl.h"

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

/////////////////////////////////////////////////////////////////////////////
// CInPlaceEdit

CInPlaceEdit::CInPlaceEdit(CWnd* pParent, CRect& rect, DWORD dwStyle, UINT nID,
	int nRow, int nColumn, CString sInitText,
	UINT nFirstChar)
{
	m_sInitText = sInitText;
	m_nRow = nRow;
	m_nColumn = nColumn;
	m_nLastChar = 0;
	m_bExitOnArrows = (nFirstChar != VK_LBUTTON);    // If mouse click brought us here,
	// then no exit on arrows

	m_Rect = rect;  // For bizarre CE bug.

	DWORD dwEditStyle = WS_BORDER | WS_CHILD | WS_VISIBLE | ES_AUTOHSCROLL //|ES_MULTILINE
		| dwStyle;
	if (!Create(dwEditStyle, rect, pParent, nID)) return;

	SetFont(pParent->GetFont());

	SetWindowText(sInitText);
	SetFocus();

	switch (nFirstChar){
	case VK_LBUTTON:
	case VK_RETURN:   SetSel((int)_tcslen(m_sInitText), -1); return;
	case VK_BACK:     SetSel((int)_tcslen(m_sInitText), -1); break;
	case VK_TAB:
	case VK_DOWN:
	case VK_UP:
	case VK_RIGHT:
	case VK_LEFT:
	case VK_NEXT:
	case VK_PRIOR:
	case VK_HOME:
	case VK_SPACE:
	case VK_END:      SetSel(0, -1); return;
	default:          SetSel(0, -1);
	}

	// Added by KiteFly. When entering DBCS chars into cells the first char was being lost
	// SenMessage changed to PostMessage (John Lagerquist)
	if (nFirstChar < 0x80)
		PostMessage(WM_CHAR, nFirstChar);
	else
		PostMessage(WM_IME_CHAR, nFirstChar);
}

CInPlaceEdit::~CInPlaceEdit()
{
}

BEGIN_MESSAGE_MAP(CInPlaceEdit, CEdit)
	//{{AFX_MSG_MAP(CInPlaceEdit)
	ON_WM_KILLFOCUS()
	ON_WM_CHAR()
	ON_WM_KEYDOWN()
	ON_WM_GETDLGCODE()
	ON_WM_CREATE()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

////////////////////////////////////////////////////////////////////////////
// CInPlaceEdit message handlers

// If an arrow key (or associated) is pressed, then exit if
//  a) The Ctrl key was down, or
//  b) m_bExitOnArrows == TRUE
void CInPlaceEdit::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
{
	if ((nChar == VK_PRIOR || nChar == VK_NEXT ||
		nChar == VK_DOWN || nChar == VK_UP ||
		nChar == VK_RIGHT || nChar == VK_LEFT) &&
		(m_bExitOnArrows || GetKeyState(VK_CONTROL) < 0))
	{
		m_nLastChar = nChar;
		GetParent()->SetFocus();
		return;
	}

	CEdit::OnKeyDown(nChar, nRepCnt, nFlags);
}

// As soon as this edit loses focus, kill it.
void CInPlaceEdit::OnKillFocus(CWnd* pNewWnd)
{
	CEdit::OnKillFocus(pNewWnd);
	EndEdit();
}

void CInPlaceEdit::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags)
{
	if (nChar == VK_TAB || nChar == VK_RETURN)
	{
		m_nLastChar = nChar;
		GetParent()->SetFocus();    // This will destroy this window
		return;
	}
	if (nChar == VK_ESCAPE)
	{
		SetWindowText(m_sInitText);    // restore previous text
		m_nLastChar = nChar;
		GetParent()->SetFocus();
		return;
	}

	CEdit::OnChar(nChar, nRepCnt, nFlags);

	// Resize edit control if needed

	// Get text extent
	CString str;
	GetWindowText(str);

	// add some extra buffer
	str += _T("  ");

	CWindowDC dc(this);
	CFont *pFontDC = dc.SelectObject(GetFont());
	CSize size = dc.GetTextExtent(str);
	dc.SelectObject(pFontDC);

	// Get client rect
	CRect ParentRect;
	GetParent()->GetClientRect(&ParentRect);

	// Check whether control needs to be resized
	// and whether there is space to grow
	if (size.cx > m_Rect.Width())
	{
		if (size.cx + m_Rect.left < ParentRect.right)
			m_Rect.right = m_Rect.left + size.cx;
		else
			m_Rect.right = ParentRect.right;
		MoveWindow(&m_Rect);
	}
}

UINT CInPlaceEdit::OnGetDlgCode()
{
	return DLGC_WANTALLKEYS;
}

////////////////////////////////////////////////////////////////////////////
// CInPlaceEdit overrides

// Stoopid win95 accelerator key problem workaround - Matt Weagle.
BOOL CInPlaceEdit::PreTranslateMessage(MSG* pMsg)
{
	// Catch the Alt key so we don't choke if focus is going to an owner drawn button
	if (pMsg->message == WM_SYSCHAR)
		return TRUE;

	return CWnd::PreTranslateMessage(pMsg);
}

// Auto delete
void CInPlaceEdit::PostNcDestroy()
{
	CEdit::PostNcDestroy();

	delete this;
}

////////////////////////////////////////////////////////////////////////////
// CInPlaceEdit implementation

void CInPlaceEdit::EndEdit()
{
	CString str;

	// EFW - BUG FIX - Clicking on a grid scroll bar in a derived class
	// that validates input can cause this to get called multiple times
	// causing assertions because the edit control goes away the first time.
	static BOOL bAlreadyEnding = FALSE;

	if (bAlreadyEnding)
		return;

	bAlreadyEnding = TRUE;
	GetWindowText(str);

	// Send Notification to parent
	GV_DISPINFO dispinfo;

	dispinfo.hdr.hwndFrom = GetSafeHwnd();
	dispinfo.hdr.idFrom = GetDlgCtrlID();
	dispinfo.hdr.code = GVN_ENDLABELEDIT;

	dispinfo.item.mask = LVIF_TEXT | LVIF_PARAM;
	dispinfo.item.row = m_nRow;
	dispinfo.item.col = m_nColumn;
	dispinfo.item.strText = str;
	dispinfo.item.lParam = (LPARAM)m_nLastChar;

	CWnd* pOwner = GetOwner();
	if (pOwner)
		pOwner->SendMessage(WM_NOTIFY, GetDlgCtrlID(), (LPARAM)&dispinfo);

	// Close this window (PostNcDestroy will delete this)
	if (IsWindow(GetSafeHwnd()))
		SendMessage(WM_CLOSE, 0, 0);
	bAlreadyEnding = FALSE;
}