main.c

ReactOS是一些高手根据Windows XP的内核编写出的类XP。内核实现机理和API函数调用几乎相同。甚至可以兼容XP的程序。喜欢研究系统内核的人可以看一看。

/*
 *  Notepad
 *
 *  Copyright 2000 Mike McCormack <[e-mail]>
 *  Copyright 1997,98 Marcel Baur <[e-mail]>
 *  Copyright 2002 Sylvain Petreolle <[e-mail]>
 *  Copyright 2002 Andriy Palamarchuk
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include <notepad.h>

NOTEPAD_GLOBALS Globals;
static ATOM aFINDMSGSTRING;

/***********************************************************************
 *
 *           SetFileName
 *
 *  Sets Global File Name.
 */
VOID SetFileName(LPCWSTR szFileName)
{
    lstrcpy(Globals.szFileName, szFileName);
    Globals.szFileTitle[0] = 0;
    GetFileTitle(szFileName, Globals.szFileTitle, sizeof(Globals.szFileTitle) / sizeof(Globals.szFileTitle[0]));
}

/***********************************************************************
 *
 *           NOTEPAD_MenuCommand
 *
 *  All handling of main menu events
 */
static int NOTEPAD_MenuCommand(WPARAM wParam)
{
    switch (wParam)
    {
    case CMD_NEW:               DIALOG_FileNew(); break;
    case CMD_OPEN:              DIALOG_FileOpen(); break;
    case CMD_SAVE:              DIALOG_FileSave(); break;
    case CMD_SAVE_AS:           DIALOG_FileSaveAs(); break;
    case CMD_PRINT:             DIALOG_FilePrint(); break;
    case CMD_PAGE_SETUP:        DIALOG_FilePageSetup(); break;
    case CMD_PRINTER_SETUP:     DIALOG_FilePrinterSetup();break;
    case CMD_EXIT:              DIALOG_FileExit(); break;

    case CMD_UNDO:             DIALOG_EditUndo(); break;
    case CMD_CUT:              DIALOG_EditCut(); break;
    case CMD_COPY:             DIALOG_EditCopy(); break;
    case CMD_PASTE:            DIALOG_EditPaste(); break;
    case CMD_DELETE:           DIALOG_EditDelete(); break;
    case CMD_SELECT_ALL:       DIALOG_EditSelectAll(); break;
    case CMD_TIME_DATE:        DIALOG_EditTimeDate();break;

    case CMD_SEARCH:           DIALOG_Search(); break;
    case CMD_SEARCH_NEXT:      DIALOG_SearchNext(); break;
    case CMD_REPLACE:          DIALOG_Replace(); break;
    case CMD_GOTO:             DIALOG_GoTo(); break;

    case CMD_WRAP:             DIALOG_EditWrap(); break;
    case CMD_FONT:             DIALOG_SelectFont(); break;

    case CMD_STATUSBAR:        DIALOG_ViewStatusBar(); break;

    case CMD_HELP_CONTENTS:    DIALOG_HelpContents(); break;
    case CMD_HELP_SEARCH:      DIALOG_HelpSearch(); break;
    case CMD_HELP_ON_HELP:     DIALOG_HelpHelp(); break;
    case CMD_ABOUT:            DialogBox(GetModuleHandle(NULL),
                                         MAKEINTRESOURCE(IDD_ABOUTBOX),
                                         Globals.hMainWnd,
                                         (DLGPROC) AboutDialogProc);
                               break;
    case CMD_ABOUT_WINE:       DIALOG_HelpAboutWine(); break;

    default:
    break;
    }
   return 0;
}

/***********************************************************************
 *
 *           NOTEPAD_FindTextAt
 */

static BOOL NOTEPAD_FindTextAt(FINDREPLACE *pFindReplace, LPCTSTR pszText, int iTextLength, DWORD dwPosition)
{
    BOOL bMatches;
    size_t iTargetLength;

    iTargetLength = _tcslen(pFindReplace->lpstrFindWhat);

    /* Make proper comparison */
    if (pFindReplace->Flags & FR_MATCHCASE)
        bMatches = !_tcsncmp(&pszText[dwPosition], pFindReplace->lpstrFindWhat, iTargetLength);
    else
        bMatches = !_tcsnicmp(&pszText[dwPosition], pFindReplace->lpstrFindWhat, iTargetLength);

    if (bMatches && pFindReplace->Flags & FR_WHOLEWORD)
    {
        if ((dwPosition > 0) && !_istspace(pszText[dwPosition-1]))
            bMatches = FALSE;
        if ((dwPosition < (DWORD) iTextLength - 1) && !_istspace(pszText[dwPosition+1]))
            bMatches = FALSE;
    }

    return bMatches;
}

/***********************************************************************
 *
 *           NOTEPAD_FindNext
 */

BOOL NOTEPAD_FindNext(FINDREPLACE *pFindReplace, BOOL bReplace, BOOL bShowAlert)
{
    int iTextLength, iTargetLength;
    size_t iAdjustment = 0;
    LPTSTR pszText = NULL;
    DWORD dwPosition, dwBegin, dwEnd;
    BOOL bMatches = FALSE;
    TCHAR szResource[128], szText[128];
    BOOL bSuccess;

    iTargetLength = (int) _tcslen(pFindReplace->lpstrFindWhat);

    /* Retrieve the window text */
    iTextLength = GetWindowTextLength(Globals.hEdit);
    if (iTextLength > 0)
    {
        pszText = (LPTSTR) HeapAlloc(GetProcessHeap(), 0, (iTextLength + 1) * sizeof(TCHAR));
        if (!pszText)
            return FALSE;

        GetWindowText(Globals.hEdit, pszText, iTextLength + 1);
    }

    SendMessage(Globals.hEdit, EM_GETSEL, (WPARAM) &dwBegin, (LPARAM) &dwEnd);
    if (bReplace && ((dwEnd - dwBegin) == (DWORD) iTargetLength))
    {
        if (NOTEPAD_FindTextAt(pFindReplace, pszText, iTextLength, dwBegin))
        {
            SendMessage(Globals.hEdit, EM_REPLACESEL, TRUE, (LPARAM) pFindReplace->lpstrReplaceWith);
            iAdjustment = _tcslen(pFindReplace->lpstrReplaceWith) - (dwEnd - dwBegin);
        }
    }

    if (pFindReplace->Flags & FR_DOWN)
    {
        /* Find Down */
        dwPosition = dwEnd;
        while(dwPosition < (DWORD) iTextLength)
        {
            bMatches = NOTEPAD_FindTextAt(pFindReplace, pszText, iTextLength, dwPosition);
            if (bMatches)
                break;
            dwPosition++;
        }
    }
    else
    {
        /* Find Up */
        dwPosition = dwBegin;
        while(dwPosition > 0)
        {
            dwPosition--;
            bMatches = NOTEPAD_FindTextAt(pFindReplace, pszText, iTextLength, dwPosition);
            if (bMatches)
                break;
        }
    }

    if (bMatches)
    {
        /* Found target */
        if (dwPosition > dwBegin)
            dwPosition += (DWORD) iAdjustment;
        SendMessage(Globals.hEdit, EM_SETSEL, dwPosition, dwPosition + iTargetLength);
        SendMessage(Globals.hEdit, EM_SCROLLCARET, 0, 0);
        bSuccess = TRUE;
    }
    else
    {
        /* Can't find target */
        if (bShowAlert)
        {
            LoadString(Globals.hInstance, STRING_CANNOTFIND, szResource, SIZEOF(szResource));
            _sntprintf(szText, SIZEOF(szText), szResource, pFindReplace->lpstrFindWhat);
            LoadString(Globals.hInstance, STRING_NOTEPAD, szResource, SIZEOF(szResource));
            MessageBox(Globals.hFindReplaceDlg, szText, szResource, MB_OK);
        }
        bSuccess = FALSE;
    }

    if (pszText)
        HeapFree(GetProcessHeap(), 0, pszText);
    return bSuccess;
}

/***********************************************************************
 *
 *           NOTEPAD_ReplaceAll
 */

static VOID NOTEPAD_ReplaceAll(FINDREPLACE *pFindReplace)
{
    BOOL bShowAlert = TRUE;

    SendMessage(Globals.hEdit, EM_SETSEL, 0, 0);

    while (NOTEPAD_FindNext(pFindReplace, TRUE, bShowAlert))
    {
        bShowAlert = FALSE;
    }
}

/***********************************************************************
 *
 *           NOTEPAD_FindTerm
 */

static VOID NOTEPAD_FindTerm(VOID)
{
    Globals.hFindReplaceDlg = NULL;
}

/***********************************************************************
 * Data Initialization
 */
static VOID NOTEPAD_InitData(VOID)
{
    LPWSTR p = Globals.szFilter;
    static const WCHAR txt_files[] = { '*','.','t','x','t',0 };
    static const WCHAR all_files[] = { '*','.','*',0 };

    LoadString(Globals.hInstance, STRING_TEXT_FILES_TXT, p, MAX_STRING_LEN);
    p += lstrlen(p) + 1;
    lstrcpy(p, txt_files);
    p += lstrlen(p) + 1;
    LoadString(Globals.hInstance, STRING_ALL_FILES, p, MAX_STRING_LEN);
    p += lstrlen(p) + 1;
    lstrcpy(p, all_files);
    p += lstrlen(p) + 1;
    *p = '\0';
    Globals.find.lpstrFindWhat = NULL;
}

/***********************************************************************
 * Enable/disable items on the menu based on control state
 */
static VOID NOTEPAD_InitMenuPopup(HMENU menu, LPARAM index)
{
    int enable;

    UNREFERENCED_PARAMETER(index);

    CheckMenuItem(GetMenu(Globals.hMainWnd), CMD_WRAP,
        MF_BYCOMMAND | (Globals.bWrapLongLines ? MF_CHECKED : MF_UNCHECKED));
    if ( !Globals.bWrapLongLines )
    {
        CheckMenuItem(GetMenu(Globals.hMainWnd), CMD_STATUSBAR,
            MF_BYCOMMAND | (Globals.bShowStatusBar ? MF_CHECKED : MF_UNCHECKED));
    }
    EnableMenuItem(menu, CMD_UNDO,
        SendMessage(Globals.hEdit, EM_CANUNDO, 0, 0) ? MF_ENABLED : MF_GRAYED);
    EnableMenuItem(menu, CMD_PASTE,
        IsClipboardFormatAvailable(CF_TEXT) ? MF_ENABLED : MF_GRAYED);
    enable = (int) SendMessage(Globals.hEdit, EM_GETSEL, 0, 0);
    enable = (HIWORD(enable) == LOWORD(enable)) ? MF_GRAYED : MF_ENABLED;
    EnableMenuItem(menu, CMD_CUT, enable);
    EnableMenuItem(menu, CMD_COPY, enable);
    EnableMenuItem(menu, CMD_DELETE, enable);

    EnableMenuItem(menu, CMD_SELECT_ALL,
        GetWindowTextLength(Globals.hEdit) ? MF_ENABLED : MF_GRAYED);
    DrawMenuBar(Globals.hMainWnd);
}

/***********************************************************************
 *
 *           NOTEPAD_WndProc
 */
static LRESULT WINAPI NOTEPAD_WndProc(HWND hWnd, UINT msg, WPARAM wParam,