src/msw/fdrepdlg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/fdrepdlg.cpp
   3 // Purpose:     wxFindReplaceDialog class
   4 // Author:      Markus Greither and Vadim Zeitlin
   5 // Modified by:
   6 // Created:     23/03/2001
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Markus Greither
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_FINDREPLDLG
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/msw/wrapcdlg.h"
  31     #include "wx/intl.h"
  32     #include "wx/log.h"
  33 #endif
  34
  35 #include "wx/fdrepdlg.h"
  36
  37 #include "wx/msw/mslu.h"
  38
  39 // ----------------------------------------------------------------------------
  40 // functions prototypes
  41 // ----------------------------------------------------------------------------
  42
  43 UINT_PTR CALLBACK wxFindReplaceDialogHookProc(HWND hwnd,
  44                                               UINT uiMsg,
  45                                               WPARAM wParam,
  46                                               LPARAM lParam);
  47
  48 // ----------------------------------------------------------------------------
  49 // wxWin macros
  50 // ----------------------------------------------------------------------------
  51
  52 IMPLEMENT_DYNAMIC_CLASS(wxFindReplaceDialog, wxDialog)
  53
  54 // ----------------------------------------------------------------------------
  55 // wxFindReplaceDialogImpl: the internals of wxFindReplaceDialog
  56 // ----------------------------------------------------------------------------
  57
  58 class WXDLLEXPORT wxFindReplaceDialogImpl
  59 {
  60 public:
  61     wxFindReplaceDialogImpl(wxFindReplaceDialog *dialog, int flagsWX);
  62     ~wxFindReplaceDialogImpl();
  63
  64     void InitFindWhat(const wxString& str);
  65     void InitReplaceWith(const wxString& str);
  66
  67     // only for passing to ::FindText or ::ReplaceText
  68     FINDREPLACE *GetPtrFindReplace() { return &m_findReplace; }
  69
  70     // set/query the "closed by user" flag
  71     void SetClosedByUser() { m_wasClosedByUser = true; }
  72     bool WasClosedByUser() const { return m_wasClosedByUser; }
  73
  74 private:
  75     // called from window procedure for ms_msgFindDialog
  76     static bool FindMessageHandler(wxWindow *win,
  77                                    WXUINT nMsg,
  78                                    WPARAM wParam,
  79                                    LPARAM lParam);
  80
  81     // copy string str contents to ppStr and fill pLen with its length
  82     void InitString(const wxString& str, LPTSTR *ppStr, WORD *pLen);
  83
  84
  85     // the find replace data used by the dialog
  86     FINDREPLACE m_findReplace;
  87
  88     // true if the user closed us, false otherwise
  89     bool m_wasClosedByUser;
  90
  91     // registered Message for Dialog
  92     static UINT ms_msgFindDialog;
  93
  94     DECLARE_NO_COPY_CLASS(wxFindReplaceDialogImpl)
  95 };
  96
  97 UINT wxFindReplaceDialogImpl::ms_msgFindDialog = 0;
  98
  99 // ============================================================================
 100 // implementation
 101 // ============================================================================
 102
 103 // ----------------------------------------------------------------------------
 104 // wxFindReplaceDialogImpl
 105 // ----------------------------------------------------------------------------
 106
 107 wxFindReplaceDialogImpl::wxFindReplaceDialogImpl(wxFindReplaceDialog *dialog,
 108                                                  int flagsWX)
 109 {
 110     // get the identifier for the find dialog message if we don't have it yet
 111     if ( !ms_msgFindDialog )
 112     {
 113         ms_msgFindDialog = ::RegisterWindowMessage(FINDMSGSTRING);
 114
 115         if ( !ms_msgFindDialog )
 116         {
 117             wxLogLastError(_T("RegisterWindowMessage(FINDMSGSTRING)"));
 118         }
 119
 120         wxWindow::MSWRegisterMessageHandler
 121                   (
 122                     ms_msgFindDialog,
 123                     &wxFindReplaceDialogImpl::FindMessageHandler
 124                   );
 125     }
 126
 127     m_wasClosedByUser = false;
 128
 129     wxZeroMemory(m_findReplace);
 130
 131     // translate the flags: first the dialog creation flags
 132
 133     // always set this to be able to set the title
 134     int flags = FR_ENABLEHOOK;
 135
 136     int flagsDialog = dialog->GetWindowStyle();
 137     if ( flagsDialog & wxFR_NOMATCHCASE)
 138         flags |= FR_NOMATCHCASE;
 139     if ( flagsDialog & wxFR_NOWHOLEWORD)
 140         flags |= FR_NOWHOLEWORD;
 141     if ( flagsDialog & wxFR_NOUPDOWN)
 142         flags |= FR_NOUPDOWN;
 143
 144     // and now the flags governing the initial values of the dialogs controls
 145     if ( flagsWX & wxFR_DOWN)
 146         flags |= FR_DOWN;
 147     if ( flagsWX & wxFR_MATCHCASE)
 148         flags |= FR_MATCHCASE;
 149     if ( flagsWX & wxFR_WHOLEWORD )
 150         flags |= FR_WHOLEWORD;
 151
 152     m_findReplace.lStructSize = sizeof(FINDREPLACE);
 153     m_findReplace.hwndOwner = GetHwndOf(dialog->GetParent());
 154     m_findReplace.Flags = flags;
 155
 156     m_findReplace.lCustData = (LPARAM)dialog;
 157     m_findReplace.lpfnHook = wxFindReplaceDialogHookProc;
 158 }
 159
 160 void wxFindReplaceDialogImpl::InitString(const wxString& str,
 161                                          LPTSTR *ppStr, WORD *pLen)
 162 {
 163     size_t len = str.length() + 1;
 164     if ( len < 80 )
 165     {
 166         // MSDN docs say that the buffer must be at least 80 chars
 167         len = 80;
 168     }
 169
 170     *ppStr = new wxChar[len];
 171     wxStrcpy(*ppStr, str);
 172     *pLen = (WORD)len;
 173 }
 174
 175 void wxFindReplaceDialogImpl::InitFindWhat(const wxString& str)
 176 {
 177     InitString(str, &m_findReplace.lpstrFindWhat, &m_findReplace.wFindWhatLen);
 178 }
 179
 180 void wxFindReplaceDialogImpl::InitReplaceWith(const wxString& str)
 181 {
 182     InitString(str,
 183                &m_findReplace.lpstrReplaceWith,
 184                &m_findReplace.wReplaceWithLen);
 185 }
 186
 187 wxFindReplaceDialogImpl::~wxFindReplaceDialogImpl()
 188 {
 189     delete [] m_findReplace.lpstrFindWhat;
 190     delete [] m_findReplace.lpstrReplaceWith;
 191 }
 192
 193 // ----------------------------------------------------------------------------
 194 // handler for FINDMSGSTRING message
 195 // ----------------------------------------------------------------------------
 196
 197 bool
 198 wxFindReplaceDialogImpl::FindMessageHandler(wxWindow * WXUNUSED(win),
 199                                             WXUINT WXUNUSED_UNLESS_DEBUG(nMsg),
 200                                             WPARAM WXUNUSED(wParam),
 201                                             LPARAM lParam)
 202 {
 203 #if wxUSE_UNICODE_MSLU
 204     static unsigned long s_lastMsgFlags = 0;
 205
 206     // This flag helps us to identify the bogus ANSI message
 207     // sent by UNICOWS.DLL (see below)
 208     // while we're sending our message to the dialog
 209     // we ignore possible messages sent in between
 210     static bool s_blockMsg = false;
 211 #endif // wxUSE_UNICODE_MSLU
 212
 213     wxASSERT_MSG( nMsg == ms_msgFindDialog, _T("unexpected message received") );
 214
 215     FINDREPLACE *pFR = (FINDREPLACE *)lParam;
 216
 217 #if wxUSE_UNICODE_MSLU
 218     // This is a hack for a MSLU problem: Versions up to 1.0.4011
 219     // of UNICOWS.DLL send the correct UNICODE item after button press
 220     // and a bogus ANSI mode item right after this, so lets ignore
 221     // the second bogus message
 222     if ( wxUsingUnicowsDll() && s_lastMsgFlags == pFR->Flags )
 223     {
 224         s_lastMsgFlags = 0;
 225         return 0;
 226     }
 227     s_lastMsgFlags = pFR->Flags;
 228 #endif // wxUSE_UNICODE_MSLU
 229
 230     wxFindReplaceDialog *dialog = (wxFindReplaceDialog *)pFR->lCustData;
 231
 232     // map flags from Windows
 233     wxEventType evtType;
 234
 235     bool replace = false;
 236     if ( pFR->Flags & FR_DIALOGTERM )
 237     {
 238         // we have to notify the dialog that it's being closed by user and
 239         // not deleted programmatically as it behaves differently in these
 240         // 2 cases
 241         dialog->GetImpl()->SetClosedByUser();
 242
 243         evtType = wxEVT_COMMAND_FIND_CLOSE;
 244     }
 245     else if ( pFR->Flags & FR_FINDNEXT )
 246     {
 247         evtType = wxEVT_COMMAND_FIND_NEXT;
 248     }
 249     else if ( pFR->Flags & FR_REPLACE )
 250     {
 251         evtType = wxEVT_COMMAND_FIND_REPLACE;
 252
 253         replace = true;
 254     }
 255     else if ( pFR->Flags & FR_REPLACEALL )
 256     {
 257         evtType = wxEVT_COMMAND_FIND_REPLACE_ALL;
 258
 259         replace = true;
 260     }
 261     else
 262     {
 263         wxFAIL_MSG( _T("unknown find dialog event") );
 264
 265         return 0;
 266     }
 267
 268     wxUint32 flags = 0;
 269     if ( pFR->Flags & FR_DOWN )
 270         flags |= wxFR_DOWN;
 271     if ( pFR->Flags & FR_WHOLEWORD )
 272         flags |= wxFR_WHOLEWORD;
 273     if ( pFR->Flags & FR_MATCHCASE )
 274         flags |= wxFR_MATCHCASE;
 275
 276     wxFindDialogEvent event(evtType, dialog->GetId());
 277     event.SetEventObject(dialog);
 278     event.SetFlags(flags);
 279     event.SetFindString(pFR->lpstrFindWhat);
 280     if ( replace )
 281     {
 282         event.SetReplaceString(pFR->lpstrReplaceWith);
 283     }
 284
 285 #if wxUSE_UNICODE_MSLU
 286     s_blockMsg = true;
 287 #endif // wxUSE_UNICODE_MSLU
 288
 289     dialog->Send(event);
 290
 291 #if wxUSE_UNICODE_MSLU
 292     s_blockMsg = false;
 293 #endif // wxUSE_UNICODE_MSLU
 294
 295     return true;
 296 }
 297
 298 // ----------------------------------------------------------------------------
 299 // Find/replace dialog hook proc
 300 // ----------------------------------------------------------------------------
 301
 302 UINT_PTR CALLBACK
 303 wxFindReplaceDialogHookProc(HWND hwnd,
 304                             UINT uiMsg,
 305                             WPARAM WXUNUSED(wParam),
 306                             LPARAM lParam)
 307 {
 308     if ( uiMsg == WM_INITDIALOG )
 309     {
 310         FINDREPLACE *pFR = (FINDREPLACE *)lParam;
 311         wxFindReplaceDialog *dialog = (wxFindReplaceDialog *)pFR->lCustData;
 312
 313         ::SetWindowText(hwnd, dialog->GetTitle().wx_str());
 314
 315         // don't return FALSE from here or the dialog won't be shown
 316         return TRUE;
 317     }
 318
 319     return 0;
 320 }
 321
 322 // ============================================================================
 323 // wxFindReplaceDialog implementation
 324 // ============================================================================
 325
 326 // ----------------------------------------------------------------------------
 327 // wxFindReplaceDialog ctors/dtor
 328 // ----------------------------------------------------------------------------
 329
 330 void wxFindReplaceDialog::Init()
 331 {
 332     m_impl = NULL;
 333     m_FindReplaceData = NULL;
 334
 335     // as we're created in the hidden state, bring the internal flag in sync
 336     m_isShown = false;
 337 }
 338
 339 wxFindReplaceDialog::wxFindReplaceDialog(wxWindow *parent,
 340                                          wxFindReplaceData *data,
 341                                          const wxString &title,
 342                                          int flags)
 343                    : wxFindReplaceDialogBase(parent, data, title, flags)
 344 {
 345     Init();
 346
 347     (void)Create(parent, data, title, flags);
 348 }
 349
 350 wxFindReplaceDialog::~wxFindReplaceDialog()
 351 {
 352     if ( m_impl )
 353     {
 354         // the dialog might have been already deleted if the user closed it
 355         // manually but in this case we should have got a notification about it
 356         // and the flag must have been set
 357         if ( !m_impl->WasClosedByUser() )
 358         {
 359             // if it wasn't, delete the dialog ourselves
 360             if ( !::DestroyWindow(GetHwnd()) )
 361             {
 362                 wxLogLastError(_T("DestroyWindow(find dialog)"));
 363             }
 364         }
 365
 366         // unsubclass the parent
 367         delete m_impl;
 368     }
 369
 370     // prevent the base class dtor from trying to hide us!
 371     m_isShown = false;
 372
 373     // and from destroying our window [again]
 374     m_hWnd = (WXHWND)NULL;
 375 }
 376
 377 bool wxFindReplaceDialog::Create(wxWindow *parent,
 378                                  wxFindReplaceData *data,
 379                                  const wxString &title,
 380                                  int flags)
 381 {
 382     m_windowStyle = flags;
 383     m_FindReplaceData = data;
 384     m_parent = parent;
 385
 386     SetTitle(title);
 387
 388     // we must have a parent as it will get the messages from us
 389     return parent != NULL;
 390 }
 391
 392 // ----------------------------------------------------------------------------
 393 // wxFindReplaceData show/hide
 394 // ----------------------------------------------------------------------------
 395
 396 bool wxFindReplaceDialog::Show(bool show)
 397 {
 398     if ( !wxWindowBase::Show(show) )
 399     {
 400         // visibility status didn't change
 401         return false;
 402     }
 403
 404     // do we already have the dialog window?
 405     if ( m_hWnd )
 406     {
 407         // yes, just use it
 408         (void)::ShowWindow(GetHwnd(), show ? SW_SHOW : SW_HIDE);
 409
 410         return true;
 411     }
 412
 413     if ( !show )
 414     {
 415         // well, it doesn't exist which is as good as being hidden
 416         return true;
 417     }
 418
 419     wxCHECK_MSG( m_FindReplaceData, false, _T("call Create() first!") );
 420
 421     wxASSERT_MSG( !m_impl, _T("why don't we have the window then?") );
 422
 423     m_impl = new wxFindReplaceDialogImpl(this, m_FindReplaceData->GetFlags());
 424
 425     m_impl->InitFindWhat(m_FindReplaceData->GetFindString());
 426
 427     bool replace = HasFlag(wxFR_REPLACEDIALOG);
 428     if ( replace )
 429     {
 430         m_impl->InitReplaceWith(m_FindReplaceData->GetReplaceString());
 431     }
 432
 433     // call the right function to show the dialog which does what we want
 434     FINDREPLACE *pFR = m_impl->GetPtrFindReplace();
 435     HWND hwnd;
 436     if ( replace )
 437         hwnd = ::ReplaceText(pFR);
 438     else
 439         hwnd = ::FindText(pFR);
 440
 441     if ( !hwnd )
 442     {
 443         wxLogError(_("Failed to create the standard find/replace dialog (error code %d)"),
 444                    ::CommDlgExtendedError());
 445
 446         delete m_impl;
 447         m_impl = NULL;
 448
 449         return false;
 450     }
 451
 452     if ( !::ShowWindow(hwnd, SW_SHOW) )
 453     {
 454         wxLogLastError(_T("ShowWindow(find dialog)"));
 455     }
 456
 457     m_hWnd = (WXHWND)hwnd;
 458
 459     return true;
 460 }
 461
 462 // ----------------------------------------------------------------------------
 463 // wxFindReplaceDialog title handling
 464 // ----------------------------------------------------------------------------
 465
 466 // we set the title of this dialog in our jook proc but for now don't crash in
 467 // the base class version because of m_hWnd == 0
 468
 469 void wxFindReplaceDialog::SetTitle( const wxString& title)
 470 {
 471     m_title = title;
 472 }
 473
 474 wxString wxFindReplaceDialog::GetTitle() const
 475 {
 476     return m_title;
 477 }
 478
 479 // ----------------------------------------------------------------------------
 480 // wxFindReplaceDialog position/size
 481 // ----------------------------------------------------------------------------
 482
 483 void wxFindReplaceDialog::DoSetSize(int WXUNUSED(x), int WXUNUSED(y),
 484                                     int WXUNUSED(width), int WXUNUSED(height),
 485                                     int WXUNUSED(sizeFlags))
 486 {
 487     // ignore - we can't change the size of this standard dialog
 488     return;
 489 }
 490
 491 // NB: of course, both of these functions are completely bogus, but it's better
 492 //     than nothing
 493 void wxFindReplaceDialog::DoGetSize(int *width, int *height) const
 494 {
 495     // the standard dialog size
 496     if ( width )
 497         *width = 225;
 498     if ( height )
 499         *height = 324;
 500 }
 501
 502 void wxFindReplaceDialog::DoGetClientSize(int *width, int *height) const
 503 {
 504     // the standard dialog size
 505     if ( width )
 506         *width = 219;
 507     if ( height )
 508         *height = 299;
 509 }
 510
 511 #endif // wxUSE_FINDREPLDLG