editor.c File Reference

#include "editor.h"
#include "commdlg.h"
#include "winreg.h"
#include "shlwapi.h"
#include "rtf.h"
#include "imm.h"
#include "res.h"

Include dependency graph for editor.c:

Go to the source code of this file.

Classes
struct	tagME_RTFStringStreamStruct
struct	tagME_GlobalDestStruct
struct	paste_format

Macros
#define	NONAMELESSUNION
#define	NO_SHLWAPI_STREAM
#define	STACK_SIZE_DEFAULT   100
#define	STACK_SIZE_MAX   1000
#define	TEXT_LIMIT_DEFAULT   32767
#define	UNSUPPORTED_MSG(e)
#define	MAX_PREFIX_LEN   9

Typedefs
typedef struct tagME_RTFStringStreamStruct	ME_RTFStringStreamStruct
typedef struct tagME_GlobalDestStruct	ME_GlobalDestStruct

Functions
	WINE_DEFAULT_DEBUG_CHANNEL (richedit)
static BOOL	ME_RegisterEditorClass (HINSTANCE)
static BOOL	ME_UpdateLinkAttribute (ME_TextEditor *editor, ME_Cursor *start, int nChars)
static BOOL	is_version_nt (void)
static ME_TextBuffer *	ME_MakeText (void)
static LRESULT	ME_StreamInText (ME_TextEditor *editor, DWORD dwFormat, ME_InStream *stream, ME_Style *style)
static void	ME_ApplyBorderProperties (RTF_Info *info, ME_BorderRect *borderRect, RTFBorder *borderDef)
void	ME_RTFCharAttrHook (RTF_Info *info)
void	ME_RTFParAttrHook (RTF_Info *info)
void	ME_RTFTblAttrHook (RTF_Info *info)
void	ME_RTFSpecialCharHook (RTF_Info *info)
static HRESULT	insert_static_object (ME_TextEditor *editor, HENHMETAFILE hemf, HBITMAP hbmp, const SIZEL *sz)
static void	ME_RTFReadShpPictGroup (RTF_Info *info)
static DWORD	read_hex_data (RTF_Info *info, BYTE **out)
static void	ME_RTFReadPictGroup (RTF_Info *info)
static void	ME_RTFReadObjectGroup (RTF_Info *info)
static void	ME_RTFReadParnumGroup (RTF_Info *info)
static void	ME_RTFReadHook (RTF_Info *info)
void	ME_StreamInFill (ME_InStream *stream)
static LRESULT	ME_StreamIn (ME_TextEditor *editor, DWORD format, EDITSTREAM *stream, BOOL stripLastCR)
static DWORD CALLBACK	ME_ReadFromRTFString (DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
static void	ME_StreamInRTFString (ME_TextEditor *editor, BOOL selection, char *string)
static int	ME_FindText (ME_TextEditor *editor, DWORD flags, const CHARRANGE *chrg, const WCHAR *text, CHARRANGE *chrgText)
static int	ME_GetTextEx (ME_TextEditor *editor, GETTEXTEX *ex, LPARAM pText)
static int	ME_GetTextRange (ME_TextEditor *editor, WCHAR *strText, const ME_Cursor *start, int nLen, BOOL unicode)
int	set_selection (ME_TextEditor *editor, int to, int from)
static DWORD CALLBACK	ME_ReadFromHGLOBALUnicode (DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
static DWORD CALLBACK	ME_ReadFromHGLOBALRTF (DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
static HRESULT	paste_rtf (ME_TextEditor *editor, FORMATETC *fmt, STGMEDIUM *med)
static HRESULT	paste_text (ME_TextEditor *editor, FORMATETC *fmt, STGMEDIUM *med)
static HRESULT	paste_emf (ME_TextEditor *editor, FORMATETC *fmt, STGMEDIUM *med)
static void	init_paste_formats (void)
static BOOL	paste_special (ME_TextEditor *editor, UINT cf, REPASTESPECIAL *ps, BOOL check_only)
static BOOL	ME_Copy (ME_TextEditor *editor, const ME_Cursor *start, int nChars)
static BOOL	copy_or_cut (ME_TextEditor *editor, BOOL cut)
static BOOL	ME_FilterEvent (ME_TextEditor *editor, UINT msg, WPARAM *wParam, LPARAM *lParam)
static void	ME_UpdateSelectionLinkAttribute (ME_TextEditor *editor)
static BOOL	handle_enter (ME_TextEditor *editor)
static BOOL	ME_KeyDown (ME_TextEditor *editor, WORD nKey)
static LRESULT	ME_Char (ME_TextEditor *editor, WPARAM charCode, LPARAM flags, BOOL unicode)
static int	ME_CalculateClickCount (ME_TextEditor *editor, UINT msg, WPARAM wParam, LPARAM lParam)
static BOOL	is_link (ME_Run *run)
static BOOL	ME_SetCursor (ME_TextEditor *editor)
static void	ME_SetDefaultFormatRect (ME_TextEditor *editor)
static LONG	ME_GetSelectionType (ME_TextEditor *editor)
static BOOL	ME_ShowContextMenu (ME_TextEditor *editor, int x, int y)
ME_TextEditor *	ME_MakeEditor (ITextHost *texthost, BOOL bEmulateVersion10)
void	ME_DestroyEditor (ME_TextEditor *editor)
BOOL WINAPI	DllMain (HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
static int	get_default_line_height (ME_TextEditor *editor)
static int	calc_wheel_change (int *remain, int amount_per_click)
static const char *	get_msg_name (UINT msg)
static void	ME_LinkNotify (ME_TextEditor *editor, UINT msg, WPARAM wParam, LPARAM lParam)
void	ME_ReplaceSel (ME_TextEditor *editor, BOOL can_undo, const WCHAR *str, int len)
static void	ME_SetText (ME_TextEditor *editor, void *text, BOOL unicode)
static LRESULT	ME_WmCreate (ME_TextEditor *editor, LPARAM lParam, BOOL unicode)
static LRESULT	handle_EM_SETCHARFORMAT (ME_TextEditor *editor, WPARAM flags, const CHARFORMAT2W *fmt_in)
LRESULT	ME_HandleMessage (ME_TextEditor *editor, UINT msg, WPARAM wParam, LPARAM lParam, BOOL unicode, HRESULT *phresult)
static BOOL	create_windowed_editor (HWND hwnd, CREATESTRUCTW *create, BOOL emulate_10)
static LRESULT	RichEditWndProc_common (HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, BOOL unicode)
static LRESULT WINAPI	RichEditWndProcW (HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
static LRESULT WINAPI	RichEditWndProcA (HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
LRESULT WINAPI	RichEditANSIWndProc (HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
LRESULT WINAPI	RichEdit10ANSIWndProc (HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
void	ME_SendOldNotify (ME_TextEditor *editor, int nCode)
int	ME_GetTextW (ME_TextEditor *editor, WCHAR *buffer, int buflen, const ME_Cursor *start, int srcChars, BOOL bCRLF, BOOL bEOP)
static LRESULT WINAPI	REComboWndProc (HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
static LRESULT WINAPI	REListWndProc (HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
LRESULT WINAPI	REExtendedRegisterClass (void)
static int __cdecl	wchar_comp (const void *key, const void *elem)
static BOOL	isurlneutral (WCHAR c)
static BOOL	ME_FindNextURLCandidate (ME_TextEditor *editor, const ME_Cursor *start, int nChars, ME_Cursor *candidate_min, ME_Cursor *candidate_max)
static BOOL	ME_IsCandidateAnURL (ME_TextEditor *editor, const ME_Cursor *start, int nChars)

Variables
static const WCHAR	REListBox20W [] = {'R','E','L','i','s','t','B','o','x','2','0','W', 0}
static const WCHAR	REComboBox20W [] = {'R','E','C','o','m','b','o','B','o','x','2','0','W', 0}
static HCURSOR	hLeft
BOOL	me_debug = FALSE
HANDLE	me_heap = NULL
static BOOL	ME_ListBoxRegistered = FALSE
static BOOL	ME_ComboBoxRegistered = FALSE
static const WCHAR	rtfW [] = {'R','i','c','h',' ','T','e','x','t',' ','F','o','r','m','a','t',0}
static struct paste_format	paste_formats []
static const char *const	edit_messages []
static const char *const	richedit_messages []

Macro Definition Documentation

MAX_PREFIX_LEN

#define MAX_PREFIX_LEN   9

NO_SHLWAPI_STREAM

#define NO_SHLWAPI_STREAM

Definition at line 232 of file editor.c.

NONAMELESSUNION

#define NONAMELESSUNION

Definition at line 227 of file editor.c.

STACK_SIZE_DEFAULT

#define STACK_SIZE_DEFAULT   100

Definition at line 245 of file editor.c.

STACK_SIZE_MAX

#define STACK_SIZE_MAX   1000

Definition at line 246 of file editor.c.

TEXT_LIMIT_DEFAULT

#define TEXT_LIMIT_DEFAULT   32767

Definition at line 248 of file editor.c.

UNSUPPORTED_MSG

#define UNSUPPORTED_MSG

(

e

)

Value:

  case e:                  \
    FIXME(#e ": stub\n");  \
    *phresult = S_FALSE;   \
    return 0;

Definition at line 3592 of file editor.c.

Typedef Documentation

ME_GlobalDestStruct

typedef struct tagME_GlobalDestStruct ME_GlobalDestStruct

ME_RTFStringStreamStruct

typedef struct tagME_RTFStringStreamStruct ME_RTFStringStreamStruct

Function Documentation

calc_wheel_change()

static int calc_wheel_change ( int *  remain, int  amount_per_click  )

inlinestatic

Definition at line 3279 of file editor.c.

{
    int change = amount_per_click * (float)*remain / WHEEL_DELTA;
    *remain -= WHEEL_DELTA * change / amount_per_click;
    return change;
}

Referenced by ME_HandleMessage().

copy_or_cut()

static BOOL copy_or_cut ( ME_TextEditor *  editor, BOOL  cut  )

static

Definition at line 2363 of file editor.c.

{
    BOOL result;
    int offs, num_chars;
    int start_cursor = ME_GetSelectionOfs(editor, &offs, &num_chars);
    ME_Cursor *sel_start = &editor->pCursors[start_cursor];
 
    if (cut && (editor->styleFlags & ES_READONLY))
    {
        MessageBeep(MB_ICONERROR);
        return FALSE;
    }
 
    num_chars -= offs;
    result = ME_Copy(editor, sel_start, num_chars);
    if (result && cut)
    {
        ME_InternalDeleteText(editor, sel_start, num_chars, FALSE);
        ME_CommitUndo(editor);
        ME_UpdateRepaint(editor, TRUE);
    }
    return result;
}

Referenced by ME_HandleMessage(), and ME_KeyDown().

create_windowed_editor()

static BOOL create_windowed_editor ( HWND  hwnd, CREATESTRUCTW *  create, BOOL  emulate_10  )

static

Definition at line 4993 of file editor.c.

{
    ITextHost *host = ME_CreateTextHost( hwnd, create, emulate_10 );
    ME_TextEditor *editor;
 
    if (!host) return FALSE;
 
    editor = ME_MakeEditor( host, emulate_10 );
    if (!editor)
    {
        ITextHost_Release( host );
        return FALSE;
    }
 
    editor->exStyleFlags = GetWindowLongW( hwnd, GWL_EXSTYLE );
    editor->styleFlags |= GetWindowLongW( hwnd, GWL_STYLE ) & ES_WANTRETURN;
    editor->hWnd = hwnd; /* FIXME: Remove editor's dependence on hWnd */
    editor->hwndParent = create->hwndParent;
 
    SetWindowLongPtrW( hwnd, 0, (LONG_PTR)editor );
 
    return TRUE;
}

Referenced by RichEdit10ANSIWndProc(), and RichEditWndProc_common().

DllMain()

BOOL WINAPI DllMain	(	HINSTANCE	hinstDLL,
		DWORD	fdwReason,
		LPVOID	lpvReserved
	)

Definition at line 3237 of file editor.c.

{
    TRACE("\n");
    switch (fdwReason)
    {
    case DLL_PROCESS_ATTACH:
      DisableThreadLibraryCalls(hinstDLL);
      me_heap = HeapCreate (0, 0x10000, 0);
      if (!ME_RegisterEditorClass(hinstDLL)) return FALSE;
      hLeft = LoadCursorW(hinstDLL, MAKEINTRESOURCEW(OCR_REVERSE));
      LookupInit();
      break;
 
    case DLL_PROCESS_DETACH:
      if (lpvReserved) break;
      UnregisterClassW(RICHEDIT_CLASS20W, 0);
      UnregisterClassW(MSFTEDIT_CLASS, 0);
      UnregisterClassA(RICHEDIT_CLASS20A, 0);
      UnregisterClassA("RichEdit50A", 0);
      if (ME_ListBoxRegistered)
          UnregisterClassW(REListBox20W, 0);
      if (ME_ComboBoxRegistered)
          UnregisterClassW(REComboBox20W, 0);
      LookupCleanup();
      HeapDestroy (me_heap);
      release_typelib();
      break;
    }
    return TRUE;
}

get_default_line_height()

static int get_default_line_height ( ME_TextEditor *  editor )

inlinestatic

Definition at line 3268 of file editor.c.

{
    int height = 0;
 
    if (editor->pBuffer && editor->pBuffer->pDefaultStyle)
        height = editor->pBuffer->pDefaultStyle->tm.tmHeight;
    if (height <= 0) height = 24;
 
    return height;
}

Referenced by ME_HandleMessage().

get_msg_name()

static const char * get_msg_name ( UINT  msg )

static

Definition at line 3413 of file editor.c.

{
  if (msg >= EM_GETSEL && msg <= EM_CHARFROMPOS)
    return edit_messages[msg - EM_GETSEL];
  if (msg >= EM_CANPASTE && msg <= EM_GETIMEMODEBIAS)
    return richedit_messages[msg - EM_CANPASTE];
  return "";
}

Referenced by REComboWndProc(), REListWndProc(), and RichEditWndProc_common().

handle_EM_SETCHARFORMAT()

static LRESULT handle_EM_SETCHARFORMAT ( ME_TextEditor *  editor, WPARAM  flags, const CHARFORMAT2W *  fmt_in  )

static

Definition at line 3542 of file editor.c.

{
    CHARFORMAT2W fmt;
    BOOL changed = TRUE;
    ME_Cursor start, end;
 
    if (!cfany_to_cf2w( &fmt, fmt_in )) return 0;
 
    if (flags & SCF_ALL)
    {
        if (editor->mode & TM_PLAINTEXT)
        {
            ME_SetDefaultCharFormat( editor, &fmt );
        }
        else
        {
            ME_SetCursorToStart( editor, &start );
            ME_SetCharFormat( editor, &start, NULL, &fmt );
            editor->nModifyStep = 1;
        }
    }
    else if (flags & SCF_SELECTION)
    {
        if (editor->mode & TM_PLAINTEXT) return 0;
        if (flags & SCF_WORD)
        {
            end = editor->pCursors[0];
            ME_MoveCursorWords( editor, &end, +1 );
            start = end;
            ME_MoveCursorWords( editor, &start, -1 );
            ME_SetCharFormat( editor, &start, &end, &fmt );
        }
        changed = ME_IsSelection( editor );
        ME_SetSelectionCharFormat( editor, &fmt );
        if (changed) editor->nModifyStep = 1;
    }
    else /* SCF_DEFAULT */
    {
        ME_SetDefaultCharFormat( editor, &fmt );
    }
 
    ME_CommitUndo( editor );
    if (changed)
    {
        ME_WrapMarkedParagraphs( editor );
        ME_UpdateScrollBar( editor );
    }
    return 1;
}

Referenced by ME_HandleMessage().

handle_enter()

static BOOL handle_enter ( ME_TextEditor *  editor )

static

Definition at line 2437 of file editor.c.

{
    BOOL ctrl_is_down = GetKeyState(VK_CONTROL) & 0x8000;
    BOOL shift_is_down = GetKeyState(VK_SHIFT) & 0x8000;
 
    if (editor->bDialogMode)
    {
        if (ctrl_is_down)
            return TRUE;
 
        if (!(editor->styleFlags & ES_WANTRETURN))
        {
            if (editor->hwndParent)
            {
                DWORD dw;
                dw = SendMessageW(editor->hwndParent, DM_GETDEFID, 0, 0);
                if (HIWORD(dw) == DC_HASDEFID)
                {
                    HWND hwDefCtrl = GetDlgItem(editor->hwndParent, LOWORD(dw));
                    if (hwDefCtrl)
                    {
                        SendMessageW(editor->hwndParent, WM_NEXTDLGCTL, (WPARAM)hwDefCtrl, TRUE);
                        PostMessageW(hwDefCtrl, WM_KEYDOWN, VK_RETURN, 0);
                    }
                }
            }
            return TRUE;
        }
    }
 
    if (editor->styleFlags & ES_MULTILINE)
    {
        static const WCHAR endl = '\r';
        static const WCHAR endlv10[] = {'\r','\n'};
        ME_Cursor cursor = editor->pCursors[0];
        ME_DisplayItem *para = cursor.pPara;
        int from, to;
        ME_Style *style, *eop_style;
 
        if (editor->styleFlags & ES_READONLY)
        {
            MessageBeep(MB_ICONERROR);
            return TRUE;
        }
 
        ME_GetSelectionOfs(editor, &from, &to);
        if (editor->nTextLimit > ME_GetTextLength(editor) - (to-from))
        {
            if (!editor->bEmulateVersion10) /* v4.1 */
            {
                if (para->member.para.nFlags & MEPF_ROWEND)
                {
                    /* Add a new table row after this row. */
                    para = ME_AppendTableRow(editor, para);
                    para = para->member.para.next_para;
                    editor->pCursors[0].pPara = para;
                    editor->pCursors[0].pRun = ME_FindItemFwd(para, diRun);
                    editor->pCursors[0].nOffset = 0;
                    editor->pCursors[1] = editor->pCursors[0];
                    ME_CommitUndo(editor);
                    ME_CheckTablesForCorruption(editor);
                    ME_UpdateRepaint(editor, FALSE);
                    return TRUE;
                }
                else if (para == editor->pCursors[1].pPara &&
                    cursor.nOffset + cursor.pRun->member.run.nCharOfs == 0 &&
                    para->member.para.prev_para->member.para.nFlags & MEPF_ROWSTART &&
                    !para->member.para.prev_para->member.para.nCharOfs)
                {
                    /* Insert a newline before the table. */
                    para = para->member.para.prev_para;
                    para->member.para.nFlags &= ~MEPF_ROWSTART;
                    editor->pCursors[0].pPara = para;
                    editor->pCursors[0].pRun = ME_FindItemFwd(para, diRun);
                    editor->pCursors[1] = editor->pCursors[0];
                    ME_InsertTextFromCursor(editor, 0, &endl, 1,
                    editor->pCursors[0].pRun->member.run.style);
                    para = editor->pBuffer->pFirst->member.para.next_para;
                    ME_SetDefaultParaFormat(editor, &para->member.para.fmt);
                    para->member.para.nFlags = 0;
                    mark_para_rewrap(editor, para);
                    editor->pCursors[0].pPara = para;
                    editor->pCursors[0].pRun = ME_FindItemFwd(para, diRun);
                    editor->pCursors[1] = editor->pCursors[0];
                    para->member.para.next_para->member.para.nFlags |= MEPF_ROWSTART;
                    ME_CommitCoalescingUndo(editor);
                    ME_CheckTablesForCorruption(editor);
                    ME_UpdateRepaint(editor, FALSE);
                    return TRUE;
                }
            }
            else /* v1.0 - 3.0 */
            {
                ME_DisplayItem *para = cursor.pPara;
                if (ME_IsInTable(para))
                {
                    if (cursor.pRun->member.run.nFlags & MERF_ENDPARA)
                    {
                        if (from == to)
                        {
                            ME_ContinueCoalescingTransaction(editor);
                            para = ME_AppendTableRow(editor, para);
                            editor->pCursors[0].pPara = para;
                            editor->pCursors[0].pRun = ME_FindItemFwd(para, diRun);
                            editor->pCursors[0].nOffset = 0;
                            editor->pCursors[1] = editor->pCursors[0];
                            ME_CommitCoalescingUndo(editor);
                            ME_UpdateRepaint(editor, FALSE);
                            return TRUE;
                        }
                    }
                    else
                    {
                        ME_ContinueCoalescingTransaction(editor);
                        if (cursor.pRun->member.run.nCharOfs + cursor.nOffset == 0 &&
                                !ME_IsInTable(para->member.para.prev_para))
                        {
                            /* Insert newline before table */
                            cursor.pRun = ME_FindItemBack(para, diRun);
                            if (cursor.pRun)
                            {
                                editor->pCursors[0].pRun = cursor.pRun;
                                editor->pCursors[0].pPara = para->member.para.prev_para;
                            }
                            editor->pCursors[0].nOffset = 0;
                            editor->pCursors[1] = editor->pCursors[0];
                            ME_InsertTextFromCursor(editor, 0, &endl, 1,
                            editor->pCursors[0].pRun->member.run.style);
                        }
                        else
                        {
                            editor->pCursors[1] = editor->pCursors[0];
                            para = ME_AppendTableRow(editor, para);
                            editor->pCursors[0].pPara = para;
                            editor->pCursors[0].pRun = ME_FindItemFwd(para, diRun);
                            editor->pCursors[0].nOffset = 0;
                            editor->pCursors[1] = editor->pCursors[0];
                        }
                        ME_CommitCoalescingUndo(editor);
                        ME_UpdateRepaint(editor, FALSE);
                        return TRUE;
                    }
                }
            }
 
            style = ME_GetInsertStyle(editor, 0);
 
            /* Normally the new eop style is the insert style, however in a list it is copied from the existing
            eop style (this prevents the list label style changing when the new eop is inserted).
            No extra ref is taken here on eop_style. */
            if (para->member.para.fmt.wNumbering)
                eop_style = para->member.para.eop_run->style;
            else
                eop_style = style;
            ME_ContinueCoalescingTransaction(editor);
            if (shift_is_down)
                ME_InsertEndRowFromCursor(editor, 0);
            else
                if (!editor->bEmulateVersion10)
                    ME_InsertTextFromCursor(editor, 0, &endl, 1, eop_style);
                else
                    ME_InsertTextFromCursor(editor, 0, endlv10, 2, eop_style);
            ME_CommitCoalescingUndo(editor);
            SetCursor(NULL);
 
            ME_UpdateSelectionLinkAttribute(editor);
            ME_UpdateRepaint(editor, FALSE);
            ME_SaveTempStyle(editor, style); /* set the temp insert style for the new para */
            ME_ReleaseStyle(style);
        }
        return TRUE;
    }
    return FALSE;
}

Referenced by ME_Char(), and ME_KeyDown().

init_paste_formats()

static void init_paste_formats ( void  )

static

Definition at line 2275 of file editor.c.

{
    struct paste_format *format;
    static int done;
 
    if (!done)
    {
        for (format = paste_formats; format->fmt.cfFormat; format++)
        {
            if (format->name)
                format->fmt.cfFormat = RegisterClipboardFormatW( format->name );
        }
        done = 1;
    }
}

Referenced by paste_special().

insert_static_object()

static HRESULT insert_static_object ( ME_TextEditor *  editor, HENHMETAFILE  hemf, HBITMAP  hbmp, const SIZEL *  sz  )

static

Definition at line 1126 of file editor.c.

{
  LPOLEOBJECT         lpObject = NULL;
  LPSTORAGE           lpStorage = NULL;
  LPOLECLIENTSITE     lpClientSite = NULL;
  LPDATAOBJECT        lpDataObject = NULL;
  LPOLECACHE          lpOleCache = NULL;
  LPRICHEDITOLE       lpReOle = NULL;
  STGMEDIUM           stgm;
  FORMATETC           fm;
  CLSID               clsid;
  HRESULT             hr = E_FAIL;
  DWORD               conn;
 
  if (hemf)
  {
      stgm.tymed = TYMED_ENHMF;
      stgm.u.hEnhMetaFile = hemf;
      fm.cfFormat = CF_ENHMETAFILE;
  }
  else if (hbmp)
  {
      stgm.tymed = TYMED_GDI;
      stgm.u.hBitmap = hbmp;
      fm.cfFormat = CF_BITMAP;
  }
  stgm.pUnkForRelease = NULL;
 
  fm.ptd = NULL;
  fm.dwAspect = DVASPECT_CONTENT;
  fm.lindex = -1;
  fm.tymed = stgm.tymed;
 
  if (!editor->reOle)
  {
    if (!CreateIRichEditOle(NULL, editor, (LPVOID *)&editor->reOle))
      return hr;
  }
 
  if (OleCreateDefaultHandler(&CLSID_NULL, NULL, &IID_IOleObject, (void**)&lpObject) == S_OK &&
      IUnknown_QueryInterface(editor->reOle, &IID_IRichEditOle, (void**)&lpReOle) == S_OK &&
      IRichEditOle_GetClientSite(lpReOle, &lpClientSite) == S_OK &&
      IOleObject_SetClientSite(lpObject, lpClientSite) == S_OK &&
      IOleObject_GetUserClassID(lpObject, &clsid) == S_OK &&
      IOleObject_QueryInterface(lpObject, &IID_IOleCache, (void**)&lpOleCache) == S_OK &&
      IOleCache_Cache(lpOleCache, &fm, 0, &conn) == S_OK &&
      IOleObject_QueryInterface(lpObject, &IID_IDataObject, (void**)&lpDataObject) == S_OK &&
      IDataObject_SetData(lpDataObject, &fm, &stgm, TRUE) == S_OK)
  {
    REOBJECT            reobject;
 
    reobject.cbStruct = sizeof(reobject);
    reobject.cp = REO_CP_SELECTION;
    reobject.clsid = clsid;
    reobject.poleobj = lpObject;
    reobject.pstg = lpStorage;
    reobject.polesite = lpClientSite;
    /* convert from twips to .01 mm */
    reobject.sizel.cx = MulDiv(sz->cx, 254, 144);
    reobject.sizel.cy = MulDiv(sz->cy, 254, 144);
    reobject.dvaspect = DVASPECT_CONTENT;
    reobject.dwFlags = 0; /* FIXME */
    reobject.dwUser = 0;
 
    ME_InsertOLEFromCursor(editor, &reobject, 0);
    hr = S_OK;
  }
 
  if (lpObject)       IOleObject_Release(lpObject);
  if (lpClientSite)   IOleClientSite_Release(lpClientSite);
  if (lpStorage)      IStorage_Release(lpStorage);
  if (lpDataObject)   IDataObject_Release(lpDataObject);
  if (lpOleCache)     IOleCache_Release(lpOleCache);
  if (lpReOle)        IRichEditOle_Release(lpReOle);
 
  return hr;
}

Referenced by ME_RTFReadPictGroup(), and paste_emf().

is_link()

static BOOL is_link ( ME_Run *  run )

static

Definition at line 2891 of file editor.c.

{
    return (run->style->fmt.dwMask & CFM_LINK) && (run->style->fmt.dwEffects & CFE_LINK);
}

Referenced by ME_LinkNotify(), and ME_SetCursor().

is_version_nt()

static BOOL is_version_nt ( void  )

inlinestatic

Definition at line 265 of file editor.c.

{
    return !(GetVersion() & 0x80000000);
}

Referenced by ME_RegisterEditorClass().

isurlneutral()

static BOOL isurlneutral ( WCHAR  c )

static

Definition at line 5367 of file editor.c.

{
    /* NB this list is sorted */
    static const WCHAR neutral_chars[] = {'!','\"','\'','(',')',',','-','.',':',';','<','>','?','[',']','{','}'};
 
    /* Some shortcuts */
    if (isalnum( c )) return FALSE;
    if (c > neutral_chars[ARRAY_SIZE( neutral_chars ) - 1]) return FALSE;
 
    return !!bsearch( &c, neutral_chars, ARRAY_SIZE( neutral_chars ), sizeof(c), wchar_comp );
}

Referenced by ME_FindNextURLCandidate().

ME_ApplyBorderProperties()

static void ME_ApplyBorderProperties ( RTF_Info *  info, ME_BorderRect *  borderRect, RTFBorder *  borderDef  )

static

Definition at line 398 of file editor.c.

{
  int i, colorNum;
  ME_Border *pBorders[] = {&borderRect->top,
                           &borderRect->left,
                           &borderRect->bottom,
                           &borderRect->right};
  for (i = 0; i < 4; i++)
  {
    RTFColor *colorDef = info->colorList;
    pBorders[i]->width = borderDef[i].width;
    colorNum = borderDef[i].color;
    while (colorDef && colorDef->rtfCNum != colorNum)
      colorDef = colorDef->rtfNextColor;
    if (colorDef)
      pBorders[i]->colorRef = RGB(
                           colorDef->rtfCRed >= 0 ? colorDef->rtfCRed : 0,
                           colorDef->rtfCGreen >= 0 ? colorDef->rtfCGreen : 0,
                           colorDef->rtfCBlue >= 0 ? colorDef->rtfCBlue : 0);
    else
      pBorders[i]->colorRef = RGB(0, 0, 0);
  }
}

Referenced by ME_RTFSpecialCharHook().

ME_CalculateClickCount()

static int ME_CalculateClickCount ( ME_TextEditor *  editor, UINT  msg, WPARAM  wParam, LPARAM  lParam  )

static

Definition at line 2841 of file editor.c.

{
    static int clickNum = 0;
    if (msg < WM_MOUSEFIRST || msg > WM_MOUSELAST)
        return 0;
 
    if ((msg == WM_LBUTTONDBLCLK) ||
        (msg == WM_RBUTTONDBLCLK) ||
        (msg == WM_MBUTTONDBLCLK) ||
        (msg == WM_XBUTTONDBLCLK))
    {
        msg -= (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN);
    }
 
    if ((msg == WM_LBUTTONDOWN) ||
        (msg == WM_RBUTTONDOWN) ||
        (msg == WM_MBUTTONDOWN) ||
        (msg == WM_XBUTTONDOWN))
    {
        static MSG prevClickMsg;
        MSG clickMsg;
        /* Compare the editor instead of the hwnd so that the this
         * can still be done for windowless richedit controls. */
        clickMsg.hwnd = (HWND)editor;
        clickMsg.message = msg;
        clickMsg.wParam = wParam;
        clickMsg.lParam = lParam;
        clickMsg.time = GetMessageTime();
        clickMsg.pt.x = (short)LOWORD(lParam);
        clickMsg.pt.y = (short)HIWORD(lParam);
        if ((clickNum != 0) &&
            (clickMsg.message == prevClickMsg.message) &&
            (clickMsg.hwnd == prevClickMsg.hwnd) &&
            (clickMsg.wParam == prevClickMsg.wParam) &&
            (clickMsg.time - prevClickMsg.time < GetDoubleClickTime()) &&
            (abs(clickMsg.pt.x - prevClickMsg.pt.x) < GetSystemMetrics(SM_CXDOUBLECLK)/2) &&
            (abs(clickMsg.pt.y - prevClickMsg.pt.y) < GetSystemMetrics(SM_CYDOUBLECLK)/2))
        {
            clickNum++;
        } else {
            clickNum = 1;
        }
        prevClickMsg = clickMsg;
    } else {
        return 0;
    }
    return clickNum;
}

Referenced by ME_HandleMessage().

ME_Char()

static LRESULT ME_Char ( ME_TextEditor *  editor, WPARAM  charCode, LPARAM  flags, BOOL  unicode  )

static

Definition at line 2744 of file editor.c.

{
  WCHAR wstr;
 
  if (editor->bMouseCaptured)
    return 0;
 
  if (editor->styleFlags & ES_READONLY)
  {
    MessageBeep(MB_ICONERROR);
    return 0; /* FIXME really 0 ? */
  }
 
  if (unicode)
      wstr = (WCHAR)charCode;
  else
  {
      CHAR charA = charCode;
      MultiByteToWideChar(CP_ACP, 0, &charA, 1, &wstr, 1);
  }
 
  if (editor->bEmulateVersion10 && wstr == '\r')
      handle_enter(editor);
 
  if ((unsigned)wstr >= ' ' || wstr == '\t')
  {
    ME_Cursor cursor = editor->pCursors[0];
    ME_DisplayItem *para = cursor.pPara;
    int from, to;
    BOOL ctrl_is_down = GetKeyState(VK_CONTROL) & 0x8000;
    ME_GetSelectionOfs(editor, &from, &to);
    if (wstr == '\t' &&
        /* v4.1 allows tabs to be inserted with ctrl key down */
        !(ctrl_is_down && !editor->bEmulateVersion10))
    {
      ME_DisplayItem *para;
      BOOL bSelectedRow = FALSE;
 
      para = cursor.pPara;
      if (ME_IsSelection(editor) &&
          cursor.pRun->member.run.nCharOfs + cursor.nOffset == 0 &&
          to == ME_GetCursorOfs(&editor->pCursors[0]) &&
          para->member.para.prev_para->type == diParagraph)
      {
        para = para->member.para.prev_para;
        bSelectedRow = TRUE;
      }
      if (ME_IsInTable(para))
      {
        ME_TabPressedInTable(editor, bSelectedRow);
        ME_CommitUndo(editor);
        return 0;
      }
    } else if (!editor->bEmulateVersion10) { /* v4.1 */
      if (para->member.para.nFlags & MEPF_ROWEND) {
        if (from == to) {
          para = para->member.para.next_para;
          if (para->member.para.nFlags & MEPF_ROWSTART)
            para = para->member.para.next_para;
          editor->pCursors[0].pPara = para;
          editor->pCursors[0].pRun = ME_FindItemFwd(para, diRun);
          editor->pCursors[0].nOffset = 0;
          editor->pCursors[1] = editor->pCursors[0];
        }
      }
    } else { /* v1.0 - 3.0 */
      if (ME_IsInTable(cursor.pRun) &&
          cursor.pRun->member.run.nFlags & MERF_ENDPARA &&
          from == to)
      {
        /* Text should not be inserted at the end of the table. */
        MessageBeep(-1);
        return 0;
      }
    }
    /* FIXME maybe it would make sense to call EM_REPLACESEL instead ? */
    /* WM_CHAR is restricted to nTextLimit */
    if(editor->nTextLimit > ME_GetTextLength(editor) - (to-from))
    {
      ME_Style *style = ME_GetInsertStyle(editor, 0);
      ME_ContinueCoalescingTransaction(editor);
      ME_InsertTextFromCursor(editor, 0, &wstr, 1, style);
      ME_ReleaseStyle(style);
      ME_CommitCoalescingUndo(editor);
      ITextHost_TxSetCursor(editor->texthost, NULL, FALSE);
    }
 
    ME_UpdateSelectionLinkAttribute(editor);
    ME_UpdateRepaint(editor, FALSE);
  }
  return 0;
}

Referenced by ME_HandleMessage().

ME_Copy()

static BOOL ME_Copy ( ME_TextEditor *  editor, const ME_Cursor *  start, int  nChars  )

static

Definition at line 2339 of file editor.c.

{
  LPDATAOBJECT dataObj = NULL;
  HRESULT hr = S_OK;
 
  if (editor->cPasswordMask)
    return FALSE; /* Copying or Cutting masked text isn't allowed */
 
  if(editor->lpOleCallback)
  {
    CHARRANGE range;
    range.cpMin = ME_GetCursorOfs(start);
    range.cpMax = range.cpMin + nChars;
    hr = IRichEditOleCallback_GetClipboardData(editor->lpOleCallback, &range, RECO_COPY, &dataObj);
  }
  if(FAILED(hr) || !dataObj)
    hr = ME_GetDataObject(editor, start, nChars, &dataObj);
  if(SUCCEEDED(hr)) {
    hr = OleSetClipboard(dataObj);
    IDataObject_Release(dataObj);
  }
  return SUCCEEDED(hr);
}

Referenced by copy_or_cut().

ME_DestroyEditor()

void ME_DestroyEditor

(

ME_TextEditor *

editor

)

Definition at line 3193 of file editor.c.

{
  ME_DisplayItem *p = editor->pBuffer->pFirst, *pNext = NULL;
  ME_Style *s, *cursor2;
  int i;
 
  ME_ClearTempStyle(editor);
  ME_EmptyUndoStack(editor);
  editor->pBuffer->pFirst = NULL;
  while(p) {
    pNext = p->next;
    if (p->type == diParagraph)
      destroy_para(editor, p);
    else
      ME_DestroyDisplayItem(p);
    p = pNext;
  }
 
  LIST_FOR_EACH_ENTRY_SAFE( s, cursor2, &editor->style_list, ME_Style, entry )
      ME_DestroyStyle( s );
 
  ME_ReleaseStyle(editor->pBuffer->pDefaultStyle);
  for (i=0; i<HFONT_CACHE_SIZE; i++)
  {
    if (editor->pFontCache[i].hFont)
      DeleteObject(editor->pFontCache[i].hFont);
  }
  if (editor->rgbBackColor != -1)
    DeleteObject(editor->hbrBackground);
  if(editor->lpOleCallback)
    IRichEditOleCallback_Release(editor->lpOleCallback);
  ITextHost_Release(editor->texthost);
  if (editor->reOle)
  {
    IUnknown_Release(editor->reOle);
    editor->reOle = NULL;
  }
  OleUninitialize();
 
  heap_free(editor->pBuffer);
  heap_free(editor->pCursors);
  heap_free(editor);
}

Referenced by ITextServicesImpl_Release(), and ME_HandleMessage().

ME_FilterEvent()

static BOOL ME_FilterEvent ( ME_TextEditor *  editor, UINT  msg, WPARAM *  wParam, LPARAM *  lParam  )

static

Definition at line 2389 of file editor.c.

{
    MSGFILTER msgf;
 
    if (!editor->hWnd || !editor->hwndParent) return FALSE;
    msgf.nmhdr.hwndFrom = editor->hWnd;
    msgf.nmhdr.idFrom = GetWindowLongW(editor->hWnd, GWLP_ID);
    msgf.nmhdr.code = EN_MSGFILTER;
    msgf.msg = msg;
    msgf.wParam = *wParam;
    msgf.lParam = *lParam;
    if (SendMessageW(editor->hwndParent, WM_NOTIFY, msgf.nmhdr.idFrom, (LPARAM)&msgf))
        return FALSE;
    *wParam = msgf.wParam;
    *lParam = msgf.lParam;
    msgf.wParam = *wParam;
 
    return TRUE;
}

Referenced by ME_HandleMessage().

ME_FindNextURLCandidate()

static BOOL ME_FindNextURLCandidate ( ME_TextEditor *  editor, const ME_Cursor *  start, int  nChars, ME_Cursor *  candidate_min, ME_Cursor *  candidate_max  )

static

This proc takes a selection, and scans it forward in order to select the span of a possible URL candidate. A possible URL candidate must start with isalnum or one of the following special characters: *|/+%#@ and must consist entirely of the characters allowed to start the URL, plus : (colon) which may occur at most once, and not at either end.

Definition at line 5386 of file editor.c.

{
  ME_Cursor cursor = *start, neutral_end, space_end;
  BOOL candidateStarted = FALSE, quoted = FALSE;
  WCHAR c;
 
  while (nChars > 0)
  {
    WCHAR *str = get_text( &cursor.pRun->member.run, 0 );
    int run_len = cursor.pRun->member.run.len;
 
    nChars -= run_len - cursor.nOffset;
 
    /* Find start of candidate */
    if (!candidateStarted)
    {
      while (cursor.nOffset < run_len)
      {
        c = str[cursor.nOffset];
        if (!iswspace( c ) && !isurlneutral( c ))
        {
          *candidate_min = cursor;
          candidateStarted = TRUE;
          neutral_end.pPara = NULL;
          space_end.pPara = NULL;
          cursor.nOffset++;
          break;
        }
        quoted = (c == '<');
        cursor.nOffset++;
      }
    }
 
    /* Find end of candidate */
    if (candidateStarted)
    {
      while (cursor.nOffset < run_len)
      {
        c = str[cursor.nOffset];
        if (iswspace( c ))
        {
          if (quoted && c != '\r')
          {
            if (!space_end.pPara)
            {
              if (neutral_end.pPara)
                space_end = neutral_end;
              else
                space_end = cursor;
            }
          }
          else
            goto done;
        }
        else if (isurlneutral( c ))
        {
          if (quoted && c == '>')
          {
            neutral_end.pPara = NULL;
            space_end.pPara = NULL;
            goto done;
          }
          if (!neutral_end.pPara)
            neutral_end = cursor;
        }
        else
          neutral_end.pPara = NULL;
 
        cursor.nOffset++;
      }
    }
 
    cursor.nOffset = 0;
    if (!ME_NextRun(&cursor.pPara, &cursor.pRun, TRUE))
      goto done;
  }
 
done:
  if (candidateStarted)
  {
    if (space_end.pPara)
      *candidate_max = space_end;
    else if (neutral_end.pPara)
      *candidate_max = neutral_end;
    else
      *candidate_max = cursor;
    return TRUE;
  }
  *candidate_max = *candidate_min = cursor;
  return FALSE;
}

Referenced by ME_UpdateLinkAttribute().

ME_FindText()

static int ME_FindText ( ME_TextEditor *  editor, DWORD  flags, const CHARRANGE *  chrg, const WCHAR *  text, CHARRANGE *  chrgText  )

static

Definition at line 1855 of file editor.c.

{
  const int nLen = lstrlenW(text);
  const int nTextLen = ME_GetTextLength(editor);
  int nMin, nMax;
  ME_Cursor cursor;
  WCHAR wLastChar = ' ';
 
  TRACE("flags==0x%08x, chrg->cpMin==%d, chrg->cpMax==%d text==%s\n",
        flags, chrg->cpMin, chrg->cpMax, debugstr_w(text));
 
  if (flags & ~(FR_DOWN | FR_MATCHCASE | FR_WHOLEWORD))
    FIXME("Flags 0x%08x not implemented\n",
        flags & ~(FR_DOWN | FR_MATCHCASE | FR_WHOLEWORD));
 
  nMin = chrg->cpMin;
  if (chrg->cpMax == -1)
    nMax = nTextLen;
  else
    nMax = chrg->cpMax > nTextLen ? nTextLen : chrg->cpMax;
 
  /* In 1.0 emulation, if cpMax reaches end of text, add the FR_DOWN flag */
  if (editor->bEmulateVersion10 && nMax == nTextLen)
  {
    flags |= FR_DOWN;
  }
 
  /* In 1.0 emulation, cpMin must always be no greater than cpMax */
  if (editor->bEmulateVersion10 && nMax < nMin)
  {
    if (chrgText)
    {
      chrgText->cpMin = -1;
      chrgText->cpMax = -1;
    }
    return -1;
  }
 
  /* when searching up, if cpMin < cpMax, then instead of searching
   * on [cpMin,cpMax], we search on [0,cpMin], otherwise, search on
   * [cpMax, cpMin]. The exception is when cpMax is -1, in which
   * case, it is always bigger than cpMin.
   */
  if (!editor->bEmulateVersion10 && !(flags & FR_DOWN))
  {
    int nSwap = nMax;
 
    nMax = nMin > nTextLen ? nTextLen : nMin;
    if (nMin < nSwap || chrg->cpMax == -1)
      nMin = 0;
    else
      nMin = nSwap;
  }
 
  if (!nLen || nMin < 0 || nMax < 0 || nMax < nMin)
  {
    if (chrgText)
      chrgText->cpMin = chrgText->cpMax = -1;
    return -1;
  }
 
  if (flags & FR_DOWN) /* Forward search */
  {
    /* If possible, find the character before where the search starts */
    if ((flags & FR_WHOLEWORD) && nMin)
    {
      ME_CursorFromCharOfs(editor, nMin - 1, &cursor);
      wLastChar = *get_text( &cursor.pRun->member.run, cursor.nOffset );
      ME_MoveCursorChars(editor, &cursor, 1, FALSE);
    } else {
      ME_CursorFromCharOfs(editor, nMin, &cursor);
    }
 
    while (cursor.pRun && ME_GetCursorOfs(&cursor) + nLen <= nMax)
    {
      ME_DisplayItem *pCurItem = cursor.pRun;
      int nCurStart = cursor.nOffset;
      int nMatched = 0;
    
      while (pCurItem && ME_CharCompare( *get_text( &pCurItem->member.run, nCurStart + nMatched ), text[nMatched], (flags & FR_MATCHCASE)))
      {
        if ((flags & FR_WHOLEWORD) && iswalnum(wLastChar))
          break;
 
        nMatched++;
        if (nMatched == nLen)
        {
          ME_DisplayItem *pNextItem = pCurItem;
          int nNextStart = nCurStart;
          WCHAR wNextChar;
 
          /* Check to see if next character is a whitespace */
          if (flags & FR_WHOLEWORD)
          {
            if (nCurStart + nMatched == pCurItem->member.run.len)
            {
              pNextItem = ME_FindItemFwd(pCurItem, diRun);
              nNextStart = -nMatched;
            }
 
            if (pNextItem)
              wNextChar = *get_text( &pNextItem->member.run, nNextStart + nMatched );
            else
              wNextChar = ' ';
 
            if (iswalnum(wNextChar))
              break;
          }
 
          cursor.nOffset += cursor.pPara->member.para.nCharOfs + cursor.pRun->member.run.nCharOfs;
          if (chrgText)
          {
            chrgText->cpMin = cursor.nOffset;
            chrgText->cpMax = cursor.nOffset + nLen;
          }
          TRACE("found at %d-%d\n", cursor.nOffset, cursor.nOffset + nLen);
          return cursor.nOffset;
        }
        if (nCurStart + nMatched == pCurItem->member.run.len)
        {
          pCurItem = ME_FindItemFwd(pCurItem, diRun);
          nCurStart = -nMatched;
        }
      }
      if (pCurItem)
        wLastChar = *get_text( &pCurItem->member.run, nCurStart + nMatched );
      else
        wLastChar = ' ';
 
      cursor.nOffset++;
      if (cursor.nOffset == cursor.pRun->member.run.len)
      {
        ME_NextRun(&cursor.pPara, &cursor.pRun, TRUE);
        cursor.nOffset = 0;
      }
    }
  }
  else /* Backward search */
  {
    /* If possible, find the character after where the search ends */
    if ((flags & FR_WHOLEWORD) && nMax < nTextLen - 1)
    {
      ME_CursorFromCharOfs(editor, nMax + 1, &cursor);
      wLastChar = *get_text( &cursor.pRun->member.run, cursor.nOffset );
      ME_MoveCursorChars(editor, &cursor, -1, FALSE);
    } else {
      ME_CursorFromCharOfs(editor, nMax, &cursor);
    }
 
    while (cursor.pRun && ME_GetCursorOfs(&cursor) - nLen >= nMin)
    {
      ME_DisplayItem *pCurItem = cursor.pRun;
      ME_DisplayItem *pCurPara = cursor.pPara;
      int nCurEnd = cursor.nOffset;
      int nMatched = 0;
 
      if (nCurEnd == 0)
      {
        ME_PrevRun(&pCurPara, &pCurItem, TRUE);
        nCurEnd = pCurItem->member.run.len;
      }
 
      while (pCurItem && ME_CharCompare( *get_text( &pCurItem->member.run, nCurEnd - nMatched - 1 ),
                                         text[nLen - nMatched - 1], (flags & FR_MATCHCASE) ))
      {
        if ((flags & FR_WHOLEWORD) && iswalnum(wLastChar))
          break;
 
        nMatched++;
        if (nMatched == nLen)
        {
          ME_DisplayItem *pPrevItem = pCurItem;
          int nPrevEnd = nCurEnd;
          WCHAR wPrevChar;
          int nStart;
 
          /* Check to see if previous character is a whitespace */
          if (flags & FR_WHOLEWORD)
          {
            if (nPrevEnd - nMatched == 0)
            {
              pPrevItem = ME_FindItemBack(pCurItem, diRun);
              if (pPrevItem)
                nPrevEnd = pPrevItem->member.run.len + nMatched;
            }
 
            if (pPrevItem)
              wPrevChar = *get_text( &pPrevItem->member.run, nPrevEnd - nMatched - 1 );
            else
              wPrevChar = ' ';
 
            if (iswalnum(wPrevChar))
              break;
          }
 
          nStart = pCurPara->member.para.nCharOfs
                   + pCurItem->member.run.nCharOfs + nCurEnd - nMatched;
          if (chrgText)
          {
            chrgText->cpMin = nStart;
            chrgText->cpMax = nStart + nLen;
          }
          TRACE("found at %d-%d\n", nStart, nStart + nLen);
          return nStart;
        }
        if (nCurEnd - nMatched == 0)
        {
          ME_PrevRun(&pCurPara, &pCurItem, TRUE);
          /* Don't care about pCurItem becoming NULL here; it's already taken
           * care of in the exterior loop condition */
          nCurEnd = pCurItem->member.run.len + nMatched;
        }
      }
      if (pCurItem)
        wLastChar = *get_text( &pCurItem->member.run, nCurEnd - nMatched - 1 );
      else
        wLastChar = ' ';
 
      cursor.nOffset--;
      if (cursor.nOffset < 0)
      {
        ME_PrevRun(&cursor.pPara, &cursor.pRun, TRUE);
        cursor.nOffset = cursor.pRun->member.run.len;
      }
    }
  }
  TRACE("not found\n");
  if (chrgText)
    chrgText->cpMin = chrgText->cpMax = -1;
  return -1;
}

Referenced by ME_HandleMessage().

ME_GetSelectionType()

static LONG ME_GetSelectionType ( ME_TextEditor *  editor )

static

Definition at line 2996 of file editor.c.

{
    LONG sel_type = SEL_EMPTY;
    LONG start, end;
 
    ME_GetSelectionOfs(editor, &start, &end);
    if (start == end)
        sel_type = SEL_EMPTY;
    else
    {
        LONG object_count = 0, character_count = 0;
        int i;
 
        for (i = 0; i < end - start; i++)
        {
            ME_Cursor cursor;
 
            ME_CursorFromCharOfs(editor, start + i, &cursor);
            if (cursor.pRun->member.run.reobj)
                object_count++;
            else
                character_count++;
            if (character_count >= 2 && object_count >= 2)
                return (SEL_TEXT | SEL_MULTICHAR | SEL_OBJECT | SEL_MULTIOBJECT);
        }
        if (character_count)
        {
            sel_type |= SEL_TEXT;
            if (character_count >= 2)
                sel_type |= SEL_MULTICHAR;
        }
        if (object_count)
        {
            sel_type |= SEL_OBJECT;
            if (object_count >= 2)
                sel_type |= SEL_MULTIOBJECT;
        }
    }
    return sel_type;
}

Referenced by ME_HandleMessage(), and ME_ShowContextMenu().

ME_GetTextEx()

static int ME_GetTextEx ( ME_TextEditor *  editor, GETTEXTEX *  ex, LPARAM  pText  )

static

Definition at line 2087 of file editor.c.

{
    int nChars;
    ME_Cursor start;
 
    if (!ex->cb || !pText) return 0;
 
    if (ex->flags & ~(GT_SELECTION | GT_USECRLF))
      FIXME("GETTEXTEX flags 0x%08x not supported\n", ex->flags & ~(GT_SELECTION | GT_USECRLF));
 
    if (ex->flags & GT_SELECTION)
    {
      int from, to;
      int nStartCur = ME_GetSelectionOfs(editor, &from, &to);
      start = editor->pCursors[nStartCur];
      nChars = to - from;
    }
    else
    {
      ME_SetCursorToStart(editor, &start);
      nChars = INT_MAX;
    }
    if (ex->codepage == CP_UNICODE)
    {
      return ME_GetTextW(editor, (LPWSTR)pText, ex->cb / sizeof(WCHAR) - 1,
                         &start, nChars, ex->flags & GT_USECRLF, FALSE);
    }
    else
    {
      /* potentially each char may be a CR, why calculate the exact value with O(N) when
        we can just take a bigger buffer? :)
        The above assumption still holds with CR/LF counters, since CR->CRLF expansion
        occurs only in richedit 2.0 mode, in which line breaks have only one CR
       */
      int crlfmul = (ex->flags & GT_USECRLF) ? 2 : 1;
      DWORD buflen;
      LPWSTR buffer;
      LRESULT rc;
 
      buflen = min(crlfmul * nChars, ex->cb - 1);
      buffer = heap_alloc((buflen + 1) * sizeof(WCHAR));
 
      nChars = ME_GetTextW(editor, buffer, buflen, &start, nChars, ex->flags & GT_USECRLF, FALSE);
      rc = WideCharToMultiByte(ex->codepage, 0, buffer, nChars + 1,
                               (LPSTR)pText, ex->cb, ex->lpDefaultChar, ex->lpUsedDefChar);
      if (rc) rc--; /* do not count 0 terminator */
 
      heap_free(buffer);
      return rc;
    }
}

Referenced by ME_HandleMessage().

ME_GetTextRange()

static int ME_GetTextRange ( ME_TextEditor *  editor, WCHAR *  strText, const ME_Cursor *  start, int  nLen, BOOL  unicode  )

static

Definition at line 2139 of file editor.c.

{
    if (!strText) return 0;
    if (unicode) {
      return ME_GetTextW(editor, strText, INT_MAX, start, nLen, FALSE, FALSE);
    } else {
      int nChars;
      WCHAR *p = heap_alloc((nLen+1) * sizeof(*p));
      if (!p) return 0;
      nChars = ME_GetTextW(editor, p, nLen, start, nLen, FALSE, FALSE);
      WideCharToMultiByte(CP_ACP, 0, p, nChars+1, (char *)strText,
                          nLen+1, NULL, NULL);
      heap_free(p);
      return nChars;
    }
}

Referenced by ME_HandleMessage().

ME_GetTextW()

int ME_GetTextW	(	ME_TextEditor *	editor,
		WCHAR *	buffer,
		int	buflen,
		const ME_Cursor *	start,
		int	srcChars,
		BOOL	bCRLF,
		BOOL	bEOP
	)

Definition at line 5191 of file editor.c.

{
  ME_DisplayItem *pRun, *pNextRun;
  const WCHAR *pStart = buffer;
  const WCHAR cr_lf[] = {'\r', '\n', 0};
  const WCHAR *str;
  int nLen;
 
  /* bCRLF flag is only honored in 2.0 and up. 1.0 must always return text verbatim */
  if (editor->bEmulateVersion10) bCRLF = FALSE;
 
  pRun = start->pRun;
  assert(pRun);
  pNextRun = ME_FindItemFwd(pRun, diRun);
 
  nLen = pRun->member.run.len - start->nOffset;
  str = get_text( &pRun->member.run, start->nOffset );
 
  while (srcChars && buflen && pNextRun)
  {
    int nFlags = pRun->member.run.nFlags;
 
    if (bCRLF && nFlags & MERF_ENDPARA && ~nFlags & MERF_ENDCELL)
    {
      if (buflen == 1) break;
      /* FIXME: native fails to reduce srcChars here for WM_GETTEXT or
       *        EM_GETTEXTEX, however, this is done for copying text which
       *        also uses this function. */
      srcChars -= min(nLen, srcChars);
      nLen = 2;
      str = cr_lf;
    } else {
      nLen = min(nLen, srcChars);
      srcChars -= nLen;
    }
 
    nLen = min(nLen, buflen);
    buflen -= nLen;
 
    CopyMemory(buffer, str, sizeof(WCHAR) * nLen);
 
    buffer += nLen;
 
    pRun = pNextRun;
    pNextRun = ME_FindItemFwd(pRun, diRun);
 
    nLen = pRun->member.run.len;
    str = get_text( &pRun->member.run, 0 );
  }
  /* append '\r' to the last paragraph. */
  if (pRun->next->type == diTextEnd && bEOP)
  {
    *buffer = '\r';
    buffer ++;
  }
  *buffer = 0;
  return buffer - pStart;
}

Referenced by fnTextSrv_TxGetText(), get_unicode_text(), ITextRange_fnGetText(), ITextSelection_fnGetText(), ME_GetTextEx(), ME_GetTextRange(), ME_IsCandidateAnURL(), ME_StreamIn(), and range_GetChar().

ME_HandleMessage()

LRESULT ME_HandleMessage	(	ME_TextEditor *	editor,
		UINT	msg,
		WPARAM	wParam,
		LPARAM	lParam,
		BOOL	unicode,
		HRESULT *	phresult
	)

Definition at line 3603 of file editor.c.

{
  *phresult = S_OK;
 
  switch(msg) {
 
  UNSUPPORTED_MSG(EM_DISPLAYBAND)
  UNSUPPORTED_MSG(EM_FINDWORDBREAK)
  UNSUPPORTED_MSG(EM_FMTLINES)
  UNSUPPORTED_MSG(EM_FORMATRANGE)
  UNSUPPORTED_MSG(EM_GETBIDIOPTIONS)
  UNSUPPORTED_MSG(EM_GETEDITSTYLE)
  UNSUPPORTED_MSG(EM_GETIMECOMPMODE)
  UNSUPPORTED_MSG(EM_GETIMESTATUS)
  UNSUPPORTED_MSG(EM_SETIMESTATUS)
  UNSUPPORTED_MSG(EM_GETLANGOPTIONS)
  UNSUPPORTED_MSG(EM_GETREDONAME)
  UNSUPPORTED_MSG(EM_GETTYPOGRAPHYOPTIONS)
  UNSUPPORTED_MSG(EM_GETUNDONAME)
  UNSUPPORTED_MSG(EM_GETWORDBREAKPROCEX)
  UNSUPPORTED_MSG(EM_SETBIDIOPTIONS)
  UNSUPPORTED_MSG(EM_SETEDITSTYLE)
  UNSUPPORTED_MSG(EM_SETLANGOPTIONS)
  UNSUPPORTED_MSG(EM_SETMARGINS)
  UNSUPPORTED_MSG(EM_SETPALETTE)
  UNSUPPORTED_MSG(EM_SETTABSTOPS)
  UNSUPPORTED_MSG(EM_SETTYPOGRAPHYOPTIONS)
  UNSUPPORTED_MSG(EM_SETWORDBREAKPROCEX)
 
/* Messages specific to Richedit controls */
 
  case EM_STREAMIN:
   return ME_StreamIn(editor, wParam, (EDITSTREAM*)lParam, TRUE);
  case EM_STREAMOUT:
   return ME_StreamOut(editor, wParam, (EDITSTREAM *)lParam);
  case WM_GETDLGCODE:
  {
    UINT code = DLGC_WANTCHARS|DLGC_WANTTAB|DLGC_WANTARROWS;
 
    if (lParam)
      editor->bDialogMode = TRUE;
    if (editor->styleFlags & ES_MULTILINE)
      code |= DLGC_WANTMESSAGE;
    if (!(editor->styleFlags & ES_SAVESEL))
      code |= DLGC_HASSETSEL;
    return code;
  }
  case EM_EMPTYUNDOBUFFER:
    ME_EmptyUndoStack(editor);
    return 0;
  case EM_GETSEL:
  {
    /* Note: wParam/lParam can be NULL */
    UINT from, to;
    PUINT pfrom = wParam ? (PUINT)wParam : &from;
    PUINT pto = lParam ? (PUINT)lParam : &to;
    ME_GetSelectionOfs(editor, (int *)pfrom, (int *)pto);
    if ((*pfrom|*pto) & 0xFFFF0000)
      return -1;
    return MAKELONG(*pfrom,*pto);
  }
  case EM_EXGETSEL:
  {
    CHARRANGE *pRange = (CHARRANGE *)lParam;
    ME_GetSelectionOfs(editor, &pRange->cpMin, &pRange->cpMax);
    TRACE("EM_EXGETSEL = (%d,%d)\n", pRange->cpMin, pRange->cpMax);
    return 0;
  }
  case EM_SETUNDOLIMIT:
  {
    if ((int)wParam < 0)
      editor->nUndoLimit = STACK_SIZE_DEFAULT;
    else
      editor->nUndoLimit = min(wParam, STACK_SIZE_MAX);
    /* Setting a max stack size keeps wine from getting killed 
      for hogging memory. Windows allocates all this memory at once, so
      no program would realistically set a value above our maximum. */
    return editor->nUndoLimit;
  }
  case EM_CANUNDO:
    return !list_empty( &editor->undo_stack );
  case EM_CANREDO:
    return !list_empty( &editor->redo_stack );
  case WM_UNDO: /* FIXME: actually not the same */
  case EM_UNDO:
    return ME_Undo(editor);
  case EM_REDO:
    return ME_Redo(editor);
  case EM_GETOPTIONS:
  {
    /* these flags are equivalent to the ES_* counterparts */
    DWORD mask = ECO_VERTICAL | ECO_AUTOHSCROLL | ECO_AUTOVSCROLL |
                 ECO_NOHIDESEL | ECO_READONLY | ECO_WANTRETURN | ECO_SELECTIONBAR;
    DWORD settings = editor->styleFlags & mask;
 
    return settings;
  }
  case EM_SETFONTSIZE:
  {
      CHARFORMAT2W cf;
      LONG tmp_size, size;
      BOOL is_increase = ((LONG)wParam > 0);
 
      if (editor->mode & TM_PLAINTEXT)
          return FALSE;
 
      cf.cbSize = sizeof(cf);
      cf.dwMask = CFM_SIZE;
      ME_GetSelectionCharFormat(editor, &cf);
      tmp_size = (cf.yHeight / 20) + wParam;
 
      if (tmp_size <= 1)
          size = 1;
      else if (tmp_size > 12 && tmp_size < 28 && tmp_size % 2)
          size = tmp_size + (is_increase ? 1 : -1);
      else if (tmp_size > 28 && tmp_size < 36)
          size = is_increase ? 36 : 28;
      else if (tmp_size > 36 && tmp_size < 48)
          size = is_increase ? 48 : 36;
      else if (tmp_size > 48 && tmp_size < 72)
          size = is_increase ? 72 : 48;
      else if (tmp_size > 72 && tmp_size < 80)
          size = is_increase ? 80 : 72;
      else if (tmp_size > 80 && tmp_size < 1638)
          size = 10 * (is_increase ? (tmp_size / 10 + 1) : (tmp_size / 10));
      else if (tmp_size >= 1638)
          size = 1638;
      else
          size = tmp_size;
 
      cf.yHeight = size * 20; /*  convert twips to points */
      ME_SetSelectionCharFormat(editor, &cf);
      ME_CommitUndo(editor);
      ME_WrapMarkedParagraphs(editor);
      ME_UpdateScrollBar(editor);
 
      return TRUE;
  }
  case EM_SETOPTIONS:
  {
    /* these flags are equivalent to ES_* counterparts, except for
     * ECO_AUTOWORDSELECTION that doesn't have an ES_* counterpart,
     * but is still stored in editor->styleFlags. */
    const DWORD mask = ECO_VERTICAL | ECO_AUTOHSCROLL | ECO_AUTOVSCROLL |
                       ECO_NOHIDESEL | ECO_READONLY | ECO_WANTRETURN |
                       ECO_SELECTIONBAR | ECO_AUTOWORDSELECTION;
    DWORD settings = mask & editor->styleFlags;
    DWORD oldSettings = settings;
    DWORD changedSettings;
 
    switch(wParam)
    {
      case ECOOP_SET:
        settings = lParam;
        break;
      case ECOOP_OR:
        settings |= lParam;
        break;
      case ECOOP_AND:
        settings &= lParam;
        break;
      case ECOOP_XOR:
        settings ^= lParam;
    }
    changedSettings = oldSettings ^ settings;
 
    if (changedSettings) {
      editor->styleFlags = (editor->styleFlags & ~mask) | (settings & mask);
 
      if (changedSettings & ECO_SELECTIONBAR)
      {
        ITextHost_TxInvalidateRect(editor->texthost, &editor->rcFormat, TRUE);
        if (settings & ECO_SELECTIONBAR) {
          assert(!editor->selofs);
          editor->selofs = SELECTIONBAR_WIDTH;
          editor->rcFormat.left += editor->selofs;
        } else {
          editor->rcFormat.left -= editor->selofs;
          editor->selofs = 0;
        }
        ME_RewrapRepaint(editor);
      }
 
      if ((changedSettings & settings & ES_NOHIDESEL) && !editor->bHaveFocus)
          ME_InvalidateSelection( editor );
 
      if (changedSettings & settings & ECO_VERTICAL)
        FIXME("ECO_VERTICAL not implemented yet!\n");
      if (changedSettings & settings & ECO_AUTOHSCROLL)
        FIXME("ECO_AUTOHSCROLL not implemented yet!\n");
      if (changedSettings & settings & ECO_AUTOVSCROLL)
        FIXME("ECO_AUTOVSCROLL not implemented yet!\n");
      if (changedSettings & settings & ECO_WANTRETURN)
        FIXME("ECO_WANTRETURN not implemented yet!\n");
      if (changedSettings & settings & ECO_AUTOWORDSELECTION)
        FIXME("ECO_AUTOWORDSELECTION not implemented yet!\n");
    }
 
    return settings;
  }
  case EM_SETSEL:
  {
    return set_selection( editor, wParam, lParam );
  }
  case EM_SETSCROLLPOS:
  {
    POINT *point = (POINT *)lParam;
    ME_ScrollAbs(editor, point->x, point->y);
    return 0;
  }
  case EM_AUTOURLDETECT:
  {
    if (wParam==1 || wParam ==0)
    {
        editor->AutoURLDetect_bEnable = (BOOL)wParam;
        return 0;
    }
    return E_INVALIDARG;
  }
  case EM_GETAUTOURLDETECT:
  {
    return editor->AutoURLDetect_bEnable;
  }
  case EM_EXSETSEL:
  {
    CHARRANGE range = *(CHARRANGE *)lParam;
 
    return set_selection( editor, range.cpMin, range.cpMax );
  }
  case EM_SHOWSCROLLBAR:
  {
    DWORD flags;
 
    switch (wParam)
    {
      case SB_HORZ:
        flags = WS_HSCROLL;
        break;
      case SB_VERT:
        flags = WS_VSCROLL;
        break;
      case SB_BOTH:
        flags = WS_HSCROLL|WS_VSCROLL;
        break;
      default:
        return 0;
    }
 
    if (lParam) {
      editor->styleFlags |= flags;
      if (flags & WS_HSCROLL)
        ITextHost_TxShowScrollBar(editor->texthost, SB_HORZ,
                          editor->nTotalWidth > editor->sizeWindow.cx);
      if (flags & WS_VSCROLL)
        ITextHost_TxShowScrollBar(editor->texthost, SB_VERT,
                          editor->nTotalLength > editor->sizeWindow.cy);
    } else {
      editor->styleFlags &= ~flags;
      ITextHost_TxShowScrollBar(editor->texthost, wParam, FALSE);
    }
    return 0;
  }
  case EM_SETTEXTEX:
  {
    LPWSTR wszText;
    SETTEXTEX *pStruct = (SETTEXTEX *)wParam;
    int from, to, len;
    ME_Style *style;
    BOOL bRtf, bUnicode, bSelection, bUTF8;
    int oldModify = editor->nModifyStep;
    static const char utf8_bom[] = {0xef, 0xbb, 0xbf};
 
    if (!pStruct) return 0;
 
    /* If we detect ascii rtf at the start of the string,
     * we know it isn't unicode. */
    bRtf = (lParam && (!strncmp((char *)lParam, "{\\rtf", 5) ||
                         !strncmp((char *)lParam, "{\\urtf", 6)));
    bUnicode = !bRtf && pStruct->codepage == CP_UNICODE;
    bUTF8 = (lParam && (!strncmp((char *)lParam, utf8_bom, 3)));
 
    TRACE("EM_SETTEXTEX - %s, flags %d, cp %d\n",
          bUnicode ? debugstr_w((LPCWSTR)lParam) : debugstr_a((LPCSTR)lParam),
          pStruct->flags, pStruct->codepage);
 
    bSelection = (pStruct->flags & ST_SELECTION) != 0;
    if (bSelection) {
      int nStartCursor = ME_GetSelectionOfs(editor, &from, &to);
      style = ME_GetSelectionInsertStyle(editor);
      ME_InternalDeleteText(editor, &editor->pCursors[nStartCursor], to - from, FALSE);
    } else {
      ME_Cursor start;
      ME_SetCursorToStart(editor, &start);
      ME_InternalDeleteText(editor, &start, ME_GetTextLength(editor), FALSE);
      style = editor->pBuffer->pDefaultStyle;
    }
 
    if (bRtf) {
      ME_StreamInRTFString(editor, bSelection, (char *)lParam);
      if (bSelection) {
        /* FIXME: The length returned doesn't include the rtf control
         * characters, only the actual text. */
        len = lParam ? strlen((char *)lParam) : 0;
      }
    } else {
      if (bUTF8 && !bUnicode) {
        wszText = ME_ToUnicode(CP_UTF8, (void *)(lParam+3), &len);
        ME_InsertTextFromCursor(editor, 0, wszText, len, style);
        ME_EndToUnicode(CP_UTF8, wszText);
      } else {
        wszText = ME_ToUnicode(pStruct->codepage, (void *)lParam, &len);
        ME_InsertTextFromCursor(editor, 0, wszText, len, style);
        ME_EndToUnicode(pStruct->codepage, wszText);
      }
    }
 
    if (bSelection) {
      ME_ReleaseStyle(style);
      ME_UpdateSelectionLinkAttribute(editor);
    } else {
      ME_Cursor cursor;
      len = 1;
      ME_SetCursorToStart(editor, &cursor);
      ME_UpdateLinkAttribute(editor, &cursor, INT_MAX);
    }
    ME_CommitUndo(editor);
    if (!(pStruct->flags & ST_KEEPUNDO))
    {
      editor->nModifyStep = oldModify;
      ME_EmptyUndoStack(editor);
    }
    ME_UpdateRepaint(editor, FALSE);
    return len;
  }
  case EM_SELECTIONTYPE:
    return ME_GetSelectionType(editor);
  case EM_SETBKGNDCOLOR:
  {
    LRESULT lColor;
    if (editor->rgbBackColor != -1) {
      DeleteObject(editor->hbrBackground);
      lColor = editor->rgbBackColor;
    }
    else lColor = ITextHost_TxGetSysColor(editor->texthost, COLOR_WINDOW);
 
    if (wParam)
    {
      editor->rgbBackColor = -1;
      editor->hbrBackground = GetSysColorBrush(COLOR_WINDOW);
    }
    else
    {
      editor->rgbBackColor = lParam;
      editor->hbrBackground = CreateSolidBrush(editor->rgbBackColor);
    }
    ITextHost_TxInvalidateRect(editor->texthost, NULL, TRUE);
    return lColor;
  }
  case EM_GETMODIFY:
    return editor->nModifyStep == 0 ? 0 : -1;
  case EM_SETMODIFY:
  {
    if (wParam)
      editor->nModifyStep = 1;
    else
      editor->nModifyStep = 0;
    
    return 0;
  }
  case EM_SETREADONLY:
  {
    if (wParam)
      editor->styleFlags |= ES_READONLY;
    else
      editor->styleFlags &= ~ES_READONLY;
    return 1;
  }
  case EM_SETEVENTMASK:
  {
    DWORD nOldMask = editor->nEventMask;
    
    editor->nEventMask = lParam;
    return nOldMask;
  }
  case EM_GETEVENTMASK:
    return editor->nEventMask;
  case EM_SETCHARFORMAT:
    return handle_EM_SETCHARFORMAT( editor, wParam, (CHARFORMAT2W *)lParam );
  case EM_GETCHARFORMAT:
  {
    CHARFORMAT2W tmp, *dst = (CHARFORMAT2W *)lParam;
    if (dst->cbSize != sizeof(CHARFORMATA) &&
        dst->cbSize != sizeof(CHARFORMATW) &&
        dst->cbSize != sizeof(CHARFORMAT2A) &&
        dst->cbSize != sizeof(CHARFORMAT2W))
      return 0;
    tmp.cbSize = sizeof(tmp);
    if (!wParam)
      ME_GetDefaultCharFormat(editor, &tmp);
    else
      ME_GetSelectionCharFormat(editor, &tmp);
    cf2w_to_cfany(dst, &tmp);
    return tmp.dwMask;
  }
  case EM_SETPARAFORMAT:
  {
    BOOL result = ME_SetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
    ME_WrapMarkedParagraphs(editor);
    ME_UpdateScrollBar(editor);
    ME_CommitUndo(editor);
    return result;
  }
  case EM_GETPARAFORMAT:
    ME_GetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
    return ((PARAFORMAT2 *)lParam)->dwMask;
  case EM_GETFIRSTVISIBLELINE:
  {
    ME_DisplayItem *p = editor->pBuffer->pFirst;
    int y = editor->vert_si.nPos;
    int ypara = 0;
    int count = 0;
    int ystart, yend;
    while(p) {
      p = ME_FindItemFwd(p, diStartRowOrParagraphOrEnd);
      if (p->type == diTextEnd)
        break;
      if (p->type == diParagraph) {
        ypara = p->member.para.pt.y;
        continue;
      }
      ystart = ypara + p->member.row.pt.y;
      yend = ystart + p->member.row.nHeight;
      if (y < yend) {
        break;
      }
      count++;
    }
    return count;
  }
  case EM_HIDESELECTION:
  {
     editor->bHideSelection = (wParam != 0);
     ME_InvalidateSelection(editor);
     return 0;
  }
  case EM_LINESCROLL:
  {
    if (!(editor->styleFlags & ES_MULTILINE))
      return FALSE;
    ME_ScrollDown( editor, lParam * get_default_line_height( editor ) );
    return TRUE;
  }
  case WM_CLEAR:
  {
    int from, to;
    int nStartCursor = ME_GetSelectionOfs(editor, &from, &to);
    ME_InternalDeleteText(editor, &editor->pCursors[nStartCursor], to-from, FALSE);
    ME_CommitUndo(editor);
    ME_UpdateRepaint(editor, TRUE);
    return 0;
  }
  case EM_REPLACESEL:
  {
    int len = 0;
    LONG codepage = unicode ? CP_UNICODE : CP_ACP;
    LPWSTR wszText = ME_ToUnicode(codepage, (void *)lParam, &len);
 
    TRACE("EM_REPLACESEL - %s\n", debugstr_w(wszText));
 
    ME_ReplaceSel(editor, !!wParam, wszText, len);
    ME_EndToUnicode(codepage, wszText);
    return len;
  }
  case EM_SCROLLCARET:
    ME_EnsureVisible(editor, &editor->pCursors[0]);
    return 0;
  case WM_SETFONT:
  {
    LOGFONTW lf;
    CHARFORMAT2W fmt;
    HDC hDC;
    BOOL bRepaint = LOWORD(lParam);
 
    if (!wParam)
      wParam = (WPARAM)GetStockObject(SYSTEM_FONT);
 
    if (!GetObjectW((HGDIOBJ)wParam, sizeof(LOGFONTW), &lf))
      return 0;
 
    hDC = ITextHost_TxGetDC(editor->texthost);
    ME_CharFormatFromLogFont(hDC, &lf, &fmt);
    ITextHost_TxReleaseDC(editor->texthost, hDC);
    if (editor->mode & TM_RICHTEXT) {
      ME_Cursor start;
      ME_SetCursorToStart(editor, &start);
      ME_SetCharFormat(editor, &start, NULL, &fmt);
    }
    ME_SetDefaultCharFormat(editor, &fmt);
 
    ME_CommitUndo(editor);
    ME_MarkAllForWrapping(editor);
    ME_WrapMarkedParagraphs(editor);
    ME_UpdateScrollBar(editor);
    if (bRepaint)
      ME_Repaint(editor);
#ifdef __REACTOS__
    if (ImmIsIME(GetKeyboardLayout(0)))
    {
      HIMC hIMC = ImmGetContext(editor->hWnd);
      ImmSetCompositionFontW(hIMC, &lf);
      ImmReleaseContext(editor->hWnd, hIMC);
    }
#endif
    return 0;
  }
  case WM_SETTEXT:
  {
    ME_Cursor cursor;
    ME_SetCursorToStart(editor, &cursor);
    ME_InternalDeleteText(editor, &cursor, ME_GetTextLength(editor), FALSE);
    if (lParam)
    {
      TRACE("WM_SETTEXT lParam==%lx\n",lParam);
      if (!strncmp((char *)lParam, "{\\rtf", 5) ||
          !strncmp((char *)lParam, "{\\urtf", 6))
      {
        /* Undocumented: WM_SETTEXT supports RTF text */
        ME_StreamInRTFString(editor, 0, (char *)lParam);
      }
      else
        ME_SetText(editor, (void*)lParam, unicode);
    }
    else
      TRACE("WM_SETTEXT - NULL\n");
    ME_SetCursorToStart(editor, &cursor);
    ME_UpdateLinkAttribute(editor, &cursor, INT_MAX);
    set_selection_cursors(editor, 0, 0);
    editor->nModifyStep = 0;
    ME_CommitUndo(editor);
    ME_EmptyUndoStack(editor);
    ME_UpdateRepaint(editor, FALSE);
    return 1;
  }
  case EM_CANPASTE:
    return paste_special( editor, 0, NULL, TRUE );
  case WM_PASTE:
  case WM_MBUTTONDOWN:
    wParam = 0;
    lParam = 0;
    /* fall through */
  case EM_PASTESPECIAL:
    paste_special( editor, wParam, (REPASTESPECIAL *)lParam, FALSE );
    return 0;
  case WM_CUT:
  case WM_COPY:
    copy_or_cut(editor, msg == WM_CUT);
    return 0;
  case WM_GETTEXTLENGTH:
  {
    GETTEXTLENGTHEX how;
 
    /* CR/LF conversion required in 2.0 mode, verbatim in 1.0 mode */
    how.flags = GTL_CLOSE | (editor->bEmulateVersion10 ? 0 : GTL_USECRLF) | GTL_NUMCHARS;
    how.codepage = unicode ? CP_UNICODE : CP_ACP;
    return ME_GetTextLengthEx(editor, &how);
  }
  case EM_GETTEXTLENGTHEX:
    return ME_GetTextLengthEx(editor, (GETTEXTLENGTHEX *)wParam);
  case WM_GETTEXT:
  {
    GETTEXTEX ex;
    ex.cb = wParam * (unicode ? sizeof(WCHAR) : sizeof(CHAR));
    ex.flags = GT_USECRLF;
    ex.codepage = unicode ? CP_UNICODE : CP_ACP;
    ex.lpDefaultChar = NULL;
    ex.lpUsedDefChar = NULL;
    return ME_GetTextEx(editor, &ex, lParam);
  }
  case EM_GETTEXTEX:
    return ME_GetTextEx(editor, (GETTEXTEX*)wParam, lParam);
  case EM_GETSELTEXT:
  {
    int nFrom, nTo, nStartCur = ME_GetSelectionOfs(editor, &nFrom, &nTo);
    ME_Cursor *from = &editor->pCursors[nStartCur];
    return ME_GetTextRange(editor, (WCHAR *)lParam, from,
                           nTo - nFrom, unicode);
  }
  case EM_GETSCROLLPOS:
  {
    POINT *point = (POINT *)lParam;
    point->x = editor->horz_si.nPos;
    point->y = editor->vert_si.nPos;
    /* 16-bit scaled value is returned as stored in scrollinfo */
    if (editor->horz_si.nMax > 0xffff)
      point->x = MulDiv(point->x, 0xffff, editor->horz_si.nMax);
    if (editor->vert_si.nMax > 0xffff)
      point->y = MulDiv(point->y, 0xffff, editor->vert_si.nMax);
    return 1;
  }
  case EM_GETTEXTRANGE:
  {
    TEXTRANGEW *rng = (TEXTRANGEW *)lParam;
    ME_Cursor start;
    int nStart = rng->chrg.cpMin;
    int nEnd = rng->chrg.cpMax;
    int textlength = ME_GetTextLength(editor);
 
    TRACE("EM_GETTEXTRANGE min=%d max=%d unicode=%d textlength=%d\n",
          rng->chrg.cpMin, rng->chrg.cpMax, unicode, textlength);
    if (nStart < 0) return 0;
    if ((nStart == 0 && nEnd == -1) || nEnd > textlength)
      nEnd = textlength;
    if (nStart >= nEnd) return 0;
 
    ME_CursorFromCharOfs(editor, nStart, &start);
    return ME_GetTextRange(editor, rng->lpstrText, &start, nEnd - nStart, unicode);
  }
  case EM_GETLINE:
  {
    ME_DisplayItem *run;
    const unsigned int nMaxChars = *(WORD *) lParam;
    unsigned int nCharsLeft = nMaxChars;
    char *dest = (char *) lParam;
    BOOL wroteNull = FALSE;
 
    TRACE("EM_GETLINE: row=%d, nMaxChars=%d (%s)\n", (int) wParam, nMaxChars,
          unicode ? "Unicode" : "Ansi");
 
    run = ME_FindRowWithNumber(editor, wParam);
    if (run == NULL)
      return 0;
 
    while (nCharsLeft && (run = ME_FindItemFwd(run, diRunOrStartRow))
           && run->type == diRun)
    {
      WCHAR *str = get_text( &run->member.run, 0 );
      unsigned int nCopy;
 
      nCopy = min(nCharsLeft, run->member.run.len);
 
      if (unicode)
        memcpy(dest, str, nCopy * sizeof(WCHAR));
      else
        nCopy = WideCharToMultiByte(CP_ACP, 0, str, nCopy, dest,
                                    nCharsLeft, NULL, NULL);
      dest += nCopy * (unicode ? sizeof(WCHAR) : 1);
      nCharsLeft -= nCopy;
    }
 
    /* append line termination, space allowing */
    if (nCharsLeft > 0)
    {
      if (unicode)
        *((WCHAR *)dest) = '\0';
      else
        *dest = '\0';
      nCharsLeft--;
      wroteNull = TRUE;
    }
 
    TRACE("EM_GETLINE: got %u characters\n", nMaxChars - nCharsLeft);
    return nMaxChars - nCharsLeft - (wroteNull ? 1 : 0);
  }
  case EM_GETLINECOUNT:
  {
    ME_DisplayItem *item = editor->pBuffer->pLast;
    int nRows = editor->total_rows;
    ME_DisplayItem *prev_para = NULL, *last_para = NULL;
 
    last_para = ME_FindItemBack(item, diRun);
    prev_para = ME_FindItemBack(last_para, diRun);
    assert(last_para);
    assert(last_para->member.run.nFlags & MERF_ENDPARA);
    if (editor->bEmulateVersion10 && prev_para &&
        last_para->member.run.nCharOfs == 0 &&
        prev_para->member.run.len == 1 &&
        *get_text( &prev_para->member.run, 0 ) == '\r')
    {
      /* In 1.0 emulation, the last solitary \r at the very end of the text
         (if one exists) is NOT a line break.
         FIXME: this is an ugly hack. This should have a more regular model. */
      nRows--;
    }
 
    TRACE("EM_GETLINECOUNT: nRows==%d\n", nRows);
    return max(1, nRows);
  }
  case EM_LINEFROMCHAR:
  {
    if (wParam == -1)
      return ME_RowNumberFromCharOfs(editor, ME_GetCursorOfs(&editor->pCursors[1]));
    else
      return ME_RowNumberFromCharOfs(editor, wParam);
  }
  case EM_EXLINEFROMCHAR:
  {
    if (lParam == -1)
      return ME_RowNumberFromCharOfs(editor, ME_GetCursorOfs(&editor->pCursors[1]));
    else    
      return ME_RowNumberFromCharOfs(editor, lParam);
  }
  case EM_LINEINDEX:
  {
    ME_DisplayItem *item, *para;
    int nCharOfs;
    
    if (wParam == -1)
      item = ME_FindItemBack(editor->pCursors[0].pRun, diStartRow);
    else
      item = ME_FindRowWithNumber(editor, wParam);
    if (!item)
      return -1;
    para = ME_GetParagraph(item);
    item = ME_FindItemFwd(item, diRun);
    nCharOfs = para->member.para.nCharOfs + item->member.run.nCharOfs;
    TRACE("EM_LINEINDEX: nCharOfs==%d\n", nCharOfs);
    return nCharOfs;
  }
  case EM_LINELENGTH:
  {
    ME_DisplayItem *item, *item_end;
    int nChars = 0, nThisLineOfs = 0, nNextLineOfs = 0;
    ME_DisplayItem *para, *run;
 
    if (wParam > ME_GetTextLength(editor))
      return 0;
    if (wParam == -1)
    {
      FIXME("EM_LINELENGTH: returning number of unselected characters on lines with selection unsupported.\n");
      return 0;
    }
    ME_RunOfsFromCharOfs(editor, wParam, &para, &run, NULL);
    item = ME_RowStart(run);
    nThisLineOfs = ME_CharOfsFromRunOfs(editor, para, ME_FindItemFwd(item, diRun), 0);
    item_end = ME_FindItemFwd(item, diStartRowOrParagraphOrEnd);
    if (item_end->type == diStartRow) {
      nNextLineOfs = ME_CharOfsFromRunOfs(editor, para, ME_FindItemFwd(item_end, diRun), 0);
    } else {
      ME_DisplayItem *endRun = ME_FindItemBack(item_end, diRun);
      assert(endRun && endRun->member.run.nFlags & MERF_ENDPARA);
      nNextLineOfs = item_end->member.para.nCharOfs - endRun->member.run.len;
    }
    nChars = nNextLineOfs - nThisLineOfs;
    TRACE("EM_LINELENGTH(%ld)==%d\n",wParam, nChars);
    return nChars;
  }
  case EM_EXLIMITTEXT:
  {
    if ((int)lParam < 0)
     return 0;
    if (lParam == 0)
      editor->nTextLimit = 65536;
    else
      editor->nTextLimit = (int) lParam;
    return 0;
  }
  case EM_LIMITTEXT:
  {
    if (wParam == 0)
      editor->nTextLimit = 65536;
    else
      editor->nTextLimit = (int) wParam;
    return 0;
  }
  case EM_GETLIMITTEXT:
  {
    return editor->nTextLimit;
  }
  case EM_FINDTEXT:
  {
    LRESULT r;
    if(!unicode){
      FINDTEXTA *ft = (FINDTEXTA *)lParam;
      int nChars = MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, NULL, 0);
      WCHAR *tmp;
 
      if ((tmp = heap_alloc(nChars * sizeof(*tmp))) != NULL)
        MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, tmp, nChars);
      r = ME_FindText(editor, wParam, &ft->chrg, tmp, NULL);
      heap_free(tmp);
    }else{
      FINDTEXTW *ft = (FINDTEXTW *)lParam;
      r = ME_FindText(editor, wParam, &ft->chrg, ft->lpstrText, NULL);
    }
    return r;
  }
  case EM_FINDTEXTEX:
  {
    LRESULT r;
    if(!unicode){
      FINDTEXTEXA *ex = (FINDTEXTEXA *)lParam;
      int nChars = MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, NULL, 0);
      WCHAR *tmp;
 
      if ((tmp = heap_alloc(nChars * sizeof(*tmp))) != NULL)
        MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, tmp, nChars);
      r = ME_FindText(editor, wParam, &ex->chrg, tmp, &ex->chrgText);
      heap_free(tmp);
    }else{
      FINDTEXTEXW *ex = (FINDTEXTEXW *)lParam;
      r = ME_FindText(editor, wParam, &ex->chrg, ex->lpstrText, &ex->chrgText);
    }
    return r;
  }
  case EM_FINDTEXTW:
  {
    FINDTEXTW *ft = (FINDTEXTW *)lParam;
    return ME_FindText(editor, wParam, &ft->chrg, ft->lpstrText, NULL);
  }
  case EM_FINDTEXTEXW:
  {
    FINDTEXTEXW *ex = (FINDTEXTEXW *)lParam;
    return ME_FindText(editor, wParam, &ex->chrg, ex->lpstrText, &ex->chrgText);
  }
  case EM_GETZOOM:
    if (!wParam || !lParam)
      return FALSE;
    *(int *)wParam = editor->nZoomNumerator;
    *(int *)lParam = editor->nZoomDenominator;
    return TRUE;
  case EM_SETZOOM:
    return ME_SetZoom(editor, wParam, lParam);
  case EM_CHARFROMPOS:
  {
    ME_Cursor cursor;
    if (ME_CharFromPos(editor, ((POINTL *)lParam)->x, ((POINTL *)lParam)->y,
                       &cursor, NULL))
      return ME_GetCursorOfs(&cursor);
    else
      return -1;
  }
  case EM_POSFROMCHAR:
  {
    ME_DisplayItem *pPara, *pRun;
    int nCharOfs, nOffset, nLength;
    POINTL pt = {0,0};
 
    nCharOfs = wParam;
    /* detect which API version we're dealing with */
    if (wParam >= 0x40000)
        nCharOfs = lParam;
    nLength = ME_GetTextLength(editor);
    nCharOfs = min(nCharOfs, nLength);
    nCharOfs = max(nCharOfs, 0);
 
    ME_RunOfsFromCharOfs(editor, nCharOfs, &pPara, &pRun, &nOffset);
    assert(pRun->type == diRun);
    pt.y = pRun->member.run.pt.y;
    pt.x = pRun->member.run.pt.x + ME_PointFromChar(editor, &pRun->member.run, nOffset, TRUE);
    pt.y += pPara->member.para.pt.y + editor->rcFormat.top;
    pt.x += editor->rcFormat.left;
 
    pt.x -= editor->horz_si.nPos;
    pt.y -= editor->vert_si.nPos;
 
    if (wParam >= 0x40000) {
        *(POINTL *)wParam = pt;
    }
    return (wParam >= 0x40000) ? 0 : MAKELONG( pt.x, pt.y );
  }
  case WM_CREATE:
    return ME_WmCreate(editor, lParam, unicode);
  case WM_DESTROY:
    ME_DestroyEditor(editor);
    return 0;
  case WM_SETCURSOR:
  {
    POINT cursor_pos;
    if (wParam == (WPARAM)editor->hWnd && GetCursorPos(&cursor_pos) &&
        ScreenToClient(editor->hWnd, &cursor_pos))
      ME_LinkNotify(editor, msg, 0, MAKELPARAM(cursor_pos.x, cursor_pos.y));
    return ME_SetCursor(editor);
  }
  case WM_LBUTTONDBLCLK:
  case WM_LBUTTONDOWN:
  {
    ME_CommitUndo(editor); /* End coalesced undos for typed characters */
    if ((editor->nEventMask & ENM_MOUSEEVENTS) &&
        !ME_FilterEvent(editor, msg, &wParam, &lParam))
      return 0;
    ITextHost_TxSetFocus(editor->texthost);
    ME_LButtonDown(editor, (short)LOWORD(lParam), (short)HIWORD(lParam),
                   ME_CalculateClickCount(editor, msg, wParam, lParam));
    ITextHost_TxSetCapture(editor->texthost, TRUE);
    editor->bMouseCaptured = TRUE;
    ME_LinkNotify(editor, msg, wParam, lParam);
    if (!ME_SetCursor(editor)) goto do_default;
    break;
  }
  case WM_MOUSEMOVE:
    if ((editor->nEventMask & ENM_MOUSEEVENTS) &&
        !ME_FilterEvent(editor, msg, &wParam, &lParam))
      return 0;
    if (editor->bMouseCaptured)
      ME_MouseMove(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
    else
      ME_LinkNotify(editor, msg, wParam, lParam);
    /* Set cursor if mouse is captured, since WM_SETCURSOR won't be received. */
    if (editor->bMouseCaptured)
        ME_SetCursor(editor);
    break;
  case WM_LBUTTONUP:
    if (editor->bMouseCaptured) {
      ITextHost_TxSetCapture(editor->texthost, FALSE);
      editor->bMouseCaptured = FALSE;
    }
    if (editor->nSelectionType == stDocument)
      editor->nSelectionType = stPosition;
    if ((editor->nEventMask & ENM_MOUSEEVENTS) &&
        !ME_FilterEvent(editor, msg, &wParam, &lParam))
      return 0;
    else
    {
      ME_SetCursor(editor);
      ME_LinkNotify(editor, msg, wParam, lParam);
    }
    break;
  case WM_RBUTTONUP:
  case WM_RBUTTONDOWN:
  case WM_RBUTTONDBLCLK:
    ME_CommitUndo(editor); /* End coalesced undos for typed characters */
    if ((editor->nEventMask & ENM_MOUSEEVENTS) &&
        !ME_FilterEvent(editor, msg, &wParam, &lParam))
      return 0;
    ME_LinkNotify(editor, msg, wParam, lParam);
    goto do_default;
  case WM_CONTEXTMENU:
    if (!ME_ShowContextMenu(editor, (short)LOWORD(lParam), (short)HIWORD(lParam)))
      goto do_default;
    break;
  case WM_SETFOCUS:
    editor->bHaveFocus = TRUE;
    create_caret(editor);
    update_caret(editor);
    ME_SendOldNotify(editor, EN_SETFOCUS);
    if (!editor->bHideSelection && !(editor->styleFlags & ES_NOHIDESEL))
        ME_InvalidateSelection( editor );
    return 0;
  case WM_KILLFOCUS:
    ME_CommitUndo(editor); /* End coalesced undos for typed characters */
    editor->bHaveFocus = FALSE;
    editor->wheel_remain = 0;
    hide_caret(editor);
    DestroyCaret();
    ME_SendOldNotify(editor, EN_KILLFOCUS);
    if (!editor->bHideSelection && !(editor->styleFlags & ES_NOHIDESEL))
        ME_InvalidateSelection( editor );
    return 0;
  case WM_COMMAND:
    TRACE("editor wnd command = %d\n", LOWORD(wParam));
    return 0;
  case WM_KEYUP:
    if ((editor->nEventMask & ENM_KEYEVENTS) &&
        !ME_FilterEvent(editor, msg, &wParam, &lParam))
      return 0;
    goto do_default;
  case WM_KEYDOWN:
    if ((editor->nEventMask & ENM_KEYEVENTS) &&
        !ME_FilterEvent(editor, msg, &wParam, &lParam))
      return 0;
    if (ME_KeyDown(editor, LOWORD(wParam)))
      return 0;
    goto do_default;
  case WM_CHAR:
    if ((editor->nEventMask & ENM_KEYEVENTS) &&
        !ME_FilterEvent(editor, msg, &wParam, &lParam))
      return 0;
    return ME_Char(editor, wParam, lParam, unicode);
  case WM_UNICHAR:
    if (unicode)
    {
        if(wParam == UNICODE_NOCHAR) return TRUE;
        if(wParam <= 0x000fffff)
        {
            if(wParam > 0xffff) /* convert to surrogates */
            {
                wParam -= 0x10000;
                ME_Char(editor, (wParam >> 10) + 0xd800, 0, TRUE);
                ME_Char(editor, (wParam & 0x03ff) + 0xdc00, 0, TRUE);
            } else {
              ME_Char(editor, wParam, 0, TRUE);
            }
        }
        return 0;
    }
    break;
  case EM_STOPGROUPTYPING:
    ME_CommitUndo(editor); /* End coalesced undos for typed characters */
    return 0;
  case WM_HSCROLL:
  {
    const int scrollUnit = 7;
 
    switch(LOWORD(wParam))
    {
      case SB_LEFT:
        ME_ScrollAbs(editor, 0, 0);
        break;
      case SB_RIGHT:
        ME_ScrollAbs(editor,
                     editor->horz_si.nMax - (int)editor->horz_si.nPage,
                     editor->vert_si.nMax - (int)editor->vert_si.nPage);
        break;
      case SB_LINELEFT:
        ME_ScrollLeft(editor, scrollUnit);
        break;
      case SB_LINERIGHT:
        ME_ScrollRight(editor, scrollUnit);
        break;
      case SB_PAGELEFT:
        ME_ScrollLeft(editor, editor->sizeWindow.cx);
        break;
      case SB_PAGERIGHT:
        ME_ScrollRight(editor, editor->sizeWindow.cx);
        break;
      case SB_THUMBTRACK:
      case SB_THUMBPOSITION:
      {
        int pos = HIWORD(wParam);
        if (editor->horz_si.nMax > 0xffff)
          pos = MulDiv(pos, editor->horz_si.nMax, 0xffff);
        ME_HScrollAbs(editor, pos);
        break;
      }
    }
    break;
  }
  case EM_SCROLL: /* fall through */
  case WM_VSCROLL:
  {
    int origNPos;
    int lineHeight = get_default_line_height( editor );
 
    origNPos = editor->vert_si.nPos;
 
    switch(LOWORD(wParam))
    {
      case SB_TOP:
        ME_ScrollAbs(editor, 0, 0);
        break;
      case SB_BOTTOM:
        ME_ScrollAbs(editor,
                     editor->horz_si.nMax - (int)editor->horz_si.nPage,
                     editor->vert_si.nMax - (int)editor->vert_si.nPage);
        break;
      case SB_LINEUP:
        ME_ScrollUp(editor,lineHeight);
        break;
      case SB_LINEDOWN:
        ME_ScrollDown(editor,lineHeight);
        break;
      case SB_PAGEUP:
        ME_ScrollUp(editor,editor->sizeWindow.cy);
        break;
      case SB_PAGEDOWN:
        ME_ScrollDown(editor,editor->sizeWindow.cy);
        break;
      case SB_THUMBTRACK:
      case SB_THUMBPOSITION:
      {
        int pos = HIWORD(wParam);
        if (editor->vert_si.nMax > 0xffff)
          pos = MulDiv(pos, editor->vert_si.nMax, 0xffff);
        ME_VScrollAbs(editor, pos);
        break;
      }
    }
    if (msg == EM_SCROLL)
      return 0x00010000 | (((editor->vert_si.nPos - origNPos)/lineHeight) & 0xffff);
    break;
  }
  case WM_MOUSEWHEEL:
  {
    int delta;
    BOOL ctrl_is_down;
 
    if ((editor->nEventMask & ENM_MOUSEEVENTS) &&
        !ME_FilterEvent(editor, msg, &wParam, &lParam))
      return 0;
 
    ctrl_is_down = GetKeyState(VK_CONTROL) & 0x8000;
 
    delta = GET_WHEEL_DELTA_WPARAM(wParam);
 
    /* if scrolling changes direction, ignore left overs */
    if ((delta < 0 && editor->wheel_remain < 0) ||
        (delta > 0 && editor->wheel_remain > 0))
      editor->wheel_remain += delta;
    else
      editor->wheel_remain = delta;
 
    if (editor->wheel_remain)
    {
      if (ctrl_is_down) {
        int numerator;
        if (!editor->nZoomNumerator || !editor->nZoomDenominator)
        {
          numerator = 100;
        } else {
          numerator = editor->nZoomNumerator * 100 / editor->nZoomDenominator;
        }
        numerator += calc_wheel_change( &editor->wheel_remain, 10 );
        if (numerator >= 10 && numerator <= 500)
          ME_SetZoom(editor, numerator, 100);
      } else {
        UINT max_lines = 3;
        int lines = 0;
 
        SystemParametersInfoW( SPI_GETWHEELSCROLLLINES, 0, &max_lines, 0 );
        if (max_lines)
          lines = calc_wheel_change( &editor->wheel_remain, (int)max_lines );
        if (lines)
          ME_ScrollDown( editor, -lines * get_default_line_height( editor ) );
      }
    }
    break;
  }
  case EM_GETRECT:
  {
    *((RECT *)lParam) = editor->rcFormat;
    if (editor->bDefaultFormatRect)
      ((RECT *)lParam)->left -= editor->selofs;
    return 0;
  }
  case EM_SETRECT:
  case EM_SETRECTNP:
  {
    if (lParam)
    {
      int border = 0;
      RECT clientRect;
      RECT *rc = (RECT *)lParam;
 
      border = editor->exStyleFlags & WS_EX_CLIENTEDGE ? 1 : 0;
      ITextHost_TxGetClientRect(editor->texthost, &clientRect);
      if (wParam == 0)
      {
        editor->rcFormat.top = max(0, rc->top - border);
        editor->rcFormat.left = max(0, rc->left - border);
        editor->rcFormat.bottom = min(clientRect.bottom, rc->bottom);
        editor->rcFormat.right = min(clientRect.right, rc->right + border);
      } else if (wParam == 1) {
        /* MSDN incorrectly says a wParam value of 1 causes the
         * lParam rect to be used as a relative offset,
         * however, the tests show it just prevents min/max bound
         * checking. */
        editor->rcFormat.top = rc->top - border;
        editor->rcFormat.left = rc->left - border;
        editor->rcFormat.bottom = rc->bottom;
        editor->rcFormat.right = rc->right + border;
      } else {
        return 0;
      }
      editor->bDefaultFormatRect = FALSE;
    }
    else
    {
      ME_SetDefaultFormatRect(editor);
      editor->bDefaultFormatRect = TRUE;
    }
    ME_MarkAllForWrapping(editor);
    ME_WrapMarkedParagraphs(editor);
    ME_UpdateScrollBar(editor);
    if (msg != EM_SETRECTNP)
      ME_Repaint(editor);
    return 0;
  }
  case EM_REQUESTRESIZE:
    ME_SendRequestResize(editor, TRUE);
    return 0;
  case WM_SETREDRAW:
    goto do_default;
  case WM_WINDOWPOSCHANGED:
  {
    RECT clientRect;
    WINDOWPOS *winpos = (WINDOWPOS *)lParam;
 
    if (winpos->flags & SWP_NOCLIENTSIZE) goto do_default;
    ITextHost_TxGetClientRect(editor->texthost, &clientRect);
    if (editor->bDefaultFormatRect) {
      ME_SetDefaultFormatRect(editor);
    } else {
      editor->rcFormat.right += clientRect.right - editor->prevClientRect.right;
      editor->rcFormat.bottom += clientRect.bottom - editor->prevClientRect.bottom;
    }
    editor->prevClientRect = clientRect;
    ME_RewrapRepaint(editor);
    goto do_default;
  }
#ifndef __REACTOS__
  /* IME messages to make richedit controls IME aware */
#endif
  case WM_IME_SETCONTEXT:
#ifdef __REACTOS__
  {
    if (FALSE) /* FIXME: Condition */
      lParam &= ~ISC_SHOWUICOMPOSITIONWINDOW;
 
    if (wParam)
    {
      HIMC hIMC = ImmGetContext(editor->hWnd);
      LPINPUTCONTEXTDX pIC = (LPINPUTCONTEXTDX)ImmLockIMC(hIMC);
      if (pIC)
      {
        pIC->dwUIFlags &= ~0x40000;
        ImmUnlockIMC(hIMC);
      }
      if (FALSE) /* FIXME: Condition */
        ImmNotifyIME(hIMC, NI_COMPOSITIONSTR, CPS_CANCEL, 0);
      ImmReleaseContext(editor->hWnd, hIMC);
    }
 
    return DefWindowProcW(editor->hWnd, msg, wParam, lParam);
  }
#endif
  case WM_IME_CONTROL:
#ifdef __REACTOS__
    return DefWindowProcW(editor->hWnd, msg, wParam, lParam);
#endif
  case WM_IME_SELECT:
#ifdef __REACTOS__
    return DefWindowProcW(editor->hWnd, msg, wParam, lParam);
#endif
  case WM_IME_COMPOSITIONFULL:
    return 0;
  case WM_IME_STARTCOMPOSITION:
  {
#ifdef __REACTOS__
    return DefWindowProcW(editor->hWnd, msg, wParam, lParam);
#else
    editor->imeStartIndex=ME_GetCursorOfs(&editor->pCursors[0]);
    ME_DeleteSelection(editor);
    ME_CommitUndo(editor);
    ME_UpdateRepaint(editor, FALSE);
#endif
    return 0;
  }
  case WM_IME_COMPOSITION:
  {
    HIMC hIMC;
 
    ME_Style *style = ME_GetInsertStyle(editor, 0);
    hIMC = ITextHost_TxImmGetContext(editor->texthost);
    ME_DeleteSelection(editor);
    ME_SaveTempStyle(editor, style);
    if (lParam & (GCS_RESULTSTR|GCS_COMPSTR))
    {
        LPWSTR lpCompStr = NULL;
        DWORD dwBufLen;
        DWORD dwIndex = lParam & GCS_RESULTSTR;
        if (!dwIndex)
          dwIndex = GCS_COMPSTR;
 
        dwBufLen = ImmGetCompositionStringW(hIMC, dwIndex, NULL, 0);
        lpCompStr = HeapAlloc(GetProcessHeap(),0,dwBufLen + sizeof(WCHAR));
        ImmGetCompositionStringW(hIMC, dwIndex, lpCompStr, dwBufLen);
        lpCompStr[dwBufLen/sizeof(WCHAR)] = 0;
#ifndef __REACTOS__
        ME_InsertTextFromCursor(editor,0,lpCompStr,dwBufLen/sizeof(WCHAR),style);
#endif
        HeapFree(GetProcessHeap(), 0, lpCompStr);
 
#ifndef __REACTOS__
        if (dwIndex == GCS_COMPSTR)
          set_selection_cursors(editor,editor->imeStartIndex,
                          editor->imeStartIndex + dwBufLen/sizeof(WCHAR));
#endif
    }
    ME_ReleaseStyle(style);
    ME_CommitUndo(editor);
    ME_UpdateRepaint(editor, FALSE);
#ifdef __REACTOS__
    return DefWindowProcW(editor->hWnd, msg, wParam, lParam);
#else
    return 0;
#endif
  }
  case WM_IME_ENDCOMPOSITION:
  {
#ifdef __REACTOS__
    return DefWindowProcW(editor->hWnd, msg, wParam, lParam);
#else
    ME_DeleteSelection(editor);
    editor->imeStartIndex=-1;
    return 0;
#endif
  }
  case EM_GETOLEINTERFACE:
  {
    if (!editor->reOle)
      if (!CreateIRichEditOle(NULL, editor, (LPVOID *)&editor->reOle))
        return 0;
    if (IUnknown_QueryInterface(editor->reOle, &IID_IRichEditOle, (LPVOID *)lParam) == S_OK)
      return 1;
    return 0;
  }
  case EM_GETPASSWORDCHAR:
  {
    return editor->cPasswordMask;
  }
  case EM_SETOLECALLBACK:
    if(editor->lpOleCallback)
      IRichEditOleCallback_Release(editor->lpOleCallback);
    editor->lpOleCallback = (IRichEditOleCallback*)lParam;
    if(editor->lpOleCallback)
      IRichEditOleCallback_AddRef(editor->lpOleCallback);
    return TRUE;
  case EM_GETWORDBREAKPROC:
    return (LRESULT)editor->pfnWordBreak;
  case EM_SETWORDBREAKPROC:
  {
    EDITWORDBREAKPROCW pfnOld = editor->pfnWordBreak;
 
    editor->pfnWordBreak = (EDITWORDBREAKPROCW)lParam;
    return (LRESULT)pfnOld;
  }
  case EM_GETTEXTMODE:
    return editor->mode;
  case EM_SETTEXTMODE:
  {
    int mask = 0;
    int changes = 0;
 
    if (ME_GetTextLength(editor) ||
        !list_empty( &editor->undo_stack ) || !list_empty( &editor->redo_stack ))
      return E_UNEXPECTED;
 
    /* Check for mutually exclusive flags in adjacent bits of wParam */
    if ((wParam & (TM_RICHTEXT | TM_MULTILEVELUNDO | TM_MULTICODEPAGE)) &
        (wParam & (TM_PLAINTEXT | TM_SINGLELEVELUNDO | TM_SINGLECODEPAGE)) << 1)
      return E_INVALIDARG;
 
    if (wParam & (TM_RICHTEXT | TM_PLAINTEXT))
    {
      mask |= TM_RICHTEXT | TM_PLAINTEXT;
      changes |= wParam & (TM_RICHTEXT | TM_PLAINTEXT);
      if (wParam & TM_PLAINTEXT) {
        /* Clear selection since it should be possible to select the
         * end of text run for rich text */
        ME_InvalidateSelection(editor);
        ME_SetCursorToStart(editor, &editor->pCursors[0]);
        editor->pCursors[1] = editor->pCursors[0];
        /* plain text can only have the default style. */
        ME_ClearTempStyle(editor);
        ME_AddRefStyle(editor->pBuffer->pDefaultStyle);
        ME_ReleaseStyle(editor->pCursors[0].pRun->member.run.style);
        editor->pCursors[0].pRun->member.run.style = editor->pBuffer->pDefaultStyle;
      }
    }
    /* FIXME: Currently no support for undo level and code page options */
    editor->mode = (editor->mode & ~mask) | changes;
    return 0;
  }
  case EM_SETPASSWORDCHAR:
  {
    editor->cPasswordMask = wParam;
    ME_RewrapRepaint(editor);
    return 0;
  }
  case EM_SETTARGETDEVICE:
    if (wParam == 0)
    {
      BOOL new = (lParam == 0 && (editor->styleFlags & ES_MULTILINE));
      if (editor->nAvailWidth || editor->bWordWrap != new)
      {
        editor->bWordWrap = new;
        editor->nAvailWidth = 0; /* wrap to client area */
        ME_RewrapRepaint(editor);
      }
    } else {
      int width = max(0, lParam);
      if ((editor->styleFlags & ES_MULTILINE) &&
          (!editor->bWordWrap || editor->nAvailWidth != width))
      {
        editor->nAvailWidth = width;
        editor->bWordWrap = TRUE;
        ME_RewrapRepaint(editor);
      }
      FIXME("EM_SETTARGETDEVICE doesn't use non-NULL target devices\n");
    }
    return TRUE;
  default:
  do_default:
    *phresult = S_FALSE;
    break;
  }
  return 0L;
}

Referenced by fnTextSrv_TxSendMessage(), and RichEditWndProc_common().

ME_IsCandidateAnURL()

static BOOL ME_IsCandidateAnURL ( ME_TextEditor *  editor, const ME_Cursor *  start, int  nChars  )

static

This proc evaluates the selection and returns TRUE if it can be considered an URL

Definition at line 5485 of file editor.c.

{
#define MAX_PREFIX_LEN 9
  struct prefix_s {
    const WCHAR text[MAX_PREFIX_LEN];
    int length;
  }prefixes[] = {
    {{'p','r','o','s','p','e','r','o',':'}, 9},
    {{'t','e','l','n','e','t',':'}, 7},
    {{'g','o','p','h','e','r',':'}, 7},
    {{'m','a','i','l','t','o',':'}, 7},
    {{'h','t','t','p','s',':'}, 6},
    {{'f','i','l','e',':'}, 5},
    {{'n','e','w','s',':'}, 5},
    {{'w','a','i','s',':'}, 5},
    {{'n','n','t','p',':'}, 5},
    {{'h','t','t','p',':'}, 5},
    {{'w','w','w','.'}, 4},
    {{'f','t','p',':'}, 4},
  };
  WCHAR bufferW[MAX_PREFIX_LEN + 1];
  unsigned int i;
 
  ME_GetTextW(editor, bufferW, MAX_PREFIX_LEN, start, nChars, FALSE, FALSE);
  for (i = 0; i < ARRAY_SIZE(prefixes); i++)
  {
    if (nChars < prefixes[i].length) continue;
    if (!memcmp(prefixes[i].text, bufferW, prefixes[i].length * sizeof(WCHAR)))
      return TRUE;
  }
  return FALSE;
#undef MAX_PREFIX_LEN
}

Referenced by ME_UpdateLinkAttribute().

ME_KeyDown()

static BOOL ME_KeyDown ( ME_TextEditor *  editor, WORD  nKey  )

static

Definition at line 2613 of file editor.c.

{
  BOOL ctrl_is_down = GetKeyState(VK_CONTROL) & 0x8000;
  BOOL shift_is_down = GetKeyState(VK_SHIFT) & 0x8000;
 
  if (editor->bMouseCaptured)
      return FALSE;
  if (nKey != VK_SHIFT && nKey != VK_CONTROL && nKey != VK_MENU)
      editor->nSelectionType = stPosition;
 
  switch (nKey)
  {
    case VK_LEFT:
    case VK_RIGHT:
    case VK_HOME:
    case VK_END:
        editor->nUDArrowX = -1;
        /* fall through */
    case VK_UP:
    case VK_DOWN:
    case VK_PRIOR:
    case VK_NEXT:
      ME_CommitUndo(editor); /* End coalesced undos for typed characters */
      ME_ArrowKey(editor, nKey, shift_is_down, ctrl_is_down);
      return TRUE;
    case VK_BACK:
    case VK_DELETE:
      editor->nUDArrowX = -1;
      /* FIXME backspace and delete aren't the same, they act different wrt paragraph style of the merged paragraph */
      if (editor->styleFlags & ES_READONLY)
        return FALSE;
      if (ME_IsSelection(editor))
      {
        ME_DeleteSelection(editor);
        ME_CommitUndo(editor);
      }
      else if (nKey == VK_DELETE)
      {
        /* Delete stops group typing.
         * (See MSDN remarks on EM_STOPGROUPTYPING message) */
        ME_DeleteTextAtCursor(editor, 1, 1);
        ME_CommitUndo(editor);
      }
      else if (ME_ArrowKey(editor, VK_LEFT, FALSE, FALSE))
      {
        BOOL bDeletionSucceeded;
        /* Backspace can be grouped for a single undo */
        ME_ContinueCoalescingTransaction(editor);
        bDeletionSucceeded = ME_DeleteTextAtCursor(editor, 1, 1);
        if (!bDeletionSucceeded && !editor->bEmulateVersion10) { /* v4.1 */
          /* Deletion was prevented so the cursor is moved back to where it was.
           * (e.g. this happens when trying to delete cell boundaries)
           */
          ME_ArrowKey(editor, VK_RIGHT, FALSE, FALSE);
        }
        ME_CommitCoalescingUndo(editor);
      }
      else
        return TRUE;
      ME_MoveCursorFromTableRowStartParagraph(editor);
      ME_UpdateSelectionLinkAttribute(editor);
      ME_UpdateRepaint(editor, FALSE);
      ME_SendRequestResize(editor, FALSE);
      return TRUE;
    case VK_RETURN:
      if (!editor->bEmulateVersion10)
          return handle_enter(editor);
      break;
    case VK_ESCAPE:
      if (editor->bDialogMode && editor->hwndParent)
        PostMessageW(editor->hwndParent, WM_CLOSE, 0, 0);
      return TRUE;
    case VK_TAB:
      if (editor->bDialogMode && editor->hwndParent)
        SendMessageW(editor->hwndParent, WM_NEXTDLGCTL