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 // ----------------------------------------------------------------------------
  38 // functions prototypes
  39 // ----------------------------------------------------------------------------
  40
  41 LRESULT CALLBACK wxFindReplaceWindowProc(HWND hwnd, WXUINT nMsg,
  42                                          WPARAM wParam, LPARAM lParam);
  43
  44 UINT_PTR CALLBACK wxFindReplaceDialogHookProc(HWND hwnd,
  45                                               UINT uiMsg,
  46                                               WPARAM wParam,
  47                                               LPARAM lParam);
  48
  49 // ----------------------------------------------------------------------------
  50 // wxWin macros
  51 // ----------------------------------------------------------------------------
  52
  53 IMPLEMENT_DYNAMIC_CLASS(wxFindReplaceDialog, wxDialog)
  54
  55 // ----------------------------------------------------------------------------
  56 // wxFindReplaceDialogImpl: the internals of wxFindReplaceDialog
  57 // ----------------------------------------------------------------------------
  58
  59 class WXDLLEXPORT wxFindReplaceDialogImpl
  60 {
  61 public:
  62     wxFindReplaceDialogImpl(wxFindReplaceDialog *dialog, int flagsWX);
  63     ~wxFindReplaceDialogImpl();
  64
  65     void InitFindWhat(const wxString& str);
  66     void InitReplaceWith(const wxString& str);
  67
  68     void SubclassDialog(HWND hwnd);
  69
  70     static UINT GetFindDialogMessage() { return ms_msgFindDialog; }
  71
  72     // only for passing to ::FindText or ::ReplaceText
  73     FINDREPLACE *GetPtrFindReplace() { return &m_findReplace; }
  74
  75     // set/query the "closed by user" flag
  76     void SetClosedByUser() { m_wasClosedByUser = true; }
  77     bool WasClosedByUser() const { return m_wasClosedByUser; }
  78
  79 private:
  80     void InitString(const wxString& str, LPTSTR *ppStr, WORD *pLen);
  81
  82     // the owner of the dialog
  83     HWND m_hwndOwner;
  84
  85     // the previous window proc of our owner
  86     WNDPROC m_oldParentWndProc;
  87
  88     // the find replace data used by the dialog
  89     FINDREPLACE m_findReplace;
  90
  91     // true if the user closed us, false otherwise
  92     bool m_wasClosedByUser;
  93
  94     // registered Message for Dialog
  95     static UINT ms_msgFindDialog;
  96
  97     DECLARE_NO_COPY_CLASS(wxFindReplaceDialogImpl)
  98 };
  99
 100 UINT wxFindReplaceDialogImpl::ms_msgFindDialog = 0;
 101
 102 // ============================================================================
 103 // implementation
 104 // ============================================================================
 105
 106 // ----------------------------------------------------------------------------
 107 // wxFindReplaceDialogImpl
 108 // ----------------------------------------------------------------------------
 109
 110 wxFindReplaceDialogImpl::wxFindReplaceDialogImpl(wxFindReplaceDialog *dialog,
 111                                                  int flagsWX)
 112 {
 113     // get the identifier for the find dialog message if we don't have it yet
 114     if ( !ms_msgFindDialog )
 115     {
 116         ms_msgFindDialog = ::RegisterWindowMessage(FINDMSGSTRING);
 117
 118         if ( !ms_msgFindDialog )
 119         {
 120             wxLogLastError(_T("RegisterWindowMessage(FINDMSGSTRING)"));
 121         }
 122     }
 123
 124     m_hwndOwner = NULL;
 125     m_oldParentWndProc = NULL;
 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 void wxFindReplaceDialogImpl::SubclassDialog(HWND hwnd)
 188 {
 189     m_hwndOwner = hwnd;
 190
 191     // check that we don't subclass the parent twice: this would be a bad idea
 192     // as then we'd have infinite recursion in wxFindReplaceWindowProc
 193     wxCHECK_RET( wxGetWindowProc(hwnd) != &wxFindReplaceWindowProc,
 194                  _T("can't have more than one find dialog currently") );
 195
 196     // set the new one and save the old as user data to allow access to it
 197     // from wxFindReplaceWindowProc
 198     m_oldParentWndProc = wxSetWindowProc(hwnd, wxFindReplaceWindowProc);
 199
 200     wxSetWindowUserData(hwnd, (void *)m_oldParentWndProc);
 201 }
 202
 203 wxFindReplaceDialogImpl::~wxFindReplaceDialogImpl()
 204 {
 205     delete [] m_findReplace.lpstrFindWhat;
 206     delete [] m_findReplace.lpstrReplaceWith;
 207
 208     if ( m_hwndOwner )
 209     {
 210         // undo subclassing
 211         wxSetWindowProc(m_hwndOwner, m_oldParentWndProc);
 212     }
 213 }
 214
 215 // ----------------------------------------------------------------------------
 216 // Window Proc for handling RegisterWindowMessage(FINDMSGSTRING)
 217 // ----------------------------------------------------------------------------
 218
 219 LRESULT CALLBACK wxFindReplaceWindowProc(HWND hwnd, WXUINT nMsg,
 220                                          WPARAM wParam, LPARAM lParam)
 221 {
 222 #if wxUSE_UNICODE_MSLU
 223     static unsigned long s_lastMsgFlags = 0;
 224
 225     // This flag helps us to identify the bogus ANSI message
 226     // sent by UNICOWS.DLL (see below)
 227     // while we're sending our message to the dialog
 228     // we ignore possible messages sent in between
 229     static bool s_blockMsg = false;
 230 #endif // wxUSE_UNICODE_MSLU
 231
 232     if ( nMsg == wxFindReplaceDialogImpl::GetFindDialogMessage() )
 233     {
 234         FINDREPLACE *pFR = (FINDREPLACE *)lParam;
 235
 236 #if wxUSE_UNICODE_MSLU
 237         // This is a hack for a MSLU problem: Versions up to 1.0.4011
 238         // of UNICOWS.DLL send the correct UNICODE item after button press
 239         // and a bogus ANSI mode item right after this, so lets ignore
 240         // the second bogus message
 241         if ( wxUsingUnicowsDll() && s_lastMsgFlags == pFR->Flags )
 242         {
 243             s_lastMsgFlags = 0;
 244             return 0;
 245         }
 246         s_lastMsgFlags = pFR->Flags;
 247 #endif // wxUSE_UNICODE_MSLU
 248
 249         wxFindReplaceDialog *dialog = (wxFindReplaceDialog *)pFR->lCustData;
 250
 251         // map flags from Windows
 252         wxEventType evtType;
 253
 254         bool replace = false;
 255         if ( pFR->Flags & FR_DIALOGTERM )
 256         {
 257             // we have to notify the dialog that it's being closed by user and
 258             // not deleted programmatically as it behaves differently in these
 259             // 2 cases
 260             dialog->GetImpl()->SetClosedByUser();
 261
 262             evtType = wxEVT_COMMAND_FIND_CLOSE;
 263         }
 264         else if ( pFR->Flags & FR_FINDNEXT )
 265         {
 266             evtType = wxEVT_COMMAND_FIND_NEXT;
 267         }
 268         else if ( pFR->Flags & FR_REPLACE )
 269         {
 270             evtType = wxEVT_COMMAND_FIND_REPLACE;
 271
 272             replace = true;
 273         }
 274         else if ( pFR->Flags & FR_REPLACEALL )
 275         {
 276             evtType = wxEVT_COMMAND_FIND_REPLACE_ALL;
 277
 278             replace = true;
 279         }
 280         else
 281         {
 282             wxFAIL_MSG( _T("unknown find dialog event") );
 283
 284             return 0;
 285         }
 286
 287         wxUint32 flags = 0;
 288         if ( pFR->Flags & FR_DOWN )
 289             flags |= wxFR_DOWN;
 290         if ( pFR->Flags & FR_WHOLEWORD )
 291             flags |= wxFR_WHOLEWORD;
 292         if ( pFR->Flags & FR_MATCHCASE )
 293             flags |= wxFR_MATCHCASE;
 294
 295         wxFindDialogEvent event(evtType, dialog->GetId());
 296         event.SetEventObject(dialog);
 297         event.SetFlags(flags);
 298         event.SetFindString(pFR->lpstrFindWhat);
 299         if ( replace )
 300         {
 301             event.SetReplaceString(pFR->lpstrReplaceWith);
 302         }
 303
 304 #if wxUSE_UNICODE_MSLU
 305         s_blockMsg = true;
 306 #endif // wxUSE_UNICODE_MSLU
 307
 308         dialog->Send(event);
 309
 310 #if wxUSE_UNICODE_MSLU
 311         s_blockMsg = false;
 312 #endif // wxUSE_UNICODE_MSLU
 313     }
 314 #if wxUSE_UNICODE_MSLU
 315     else if ( !s_blockMsg )
 316         s_lastMsgFlags = 0;
 317 #endif // wxUSE_UNICODE_MSLU
 318
 319     WNDPROC wndProc = (WNDPROC)wxGetWindowUserData(hwnd);
 320
 321     // sanity check
 322     wxASSERT_MSG( wndProc != wxFindReplaceWindowProc,
 323                   _T("infinite recursion detected") );
 324
 325     return ::CallWindowProc(wndProc, hwnd, nMsg, wParam, lParam);
 326 }
 327
 328 // ----------------------------------------------------------------------------
 329 // Find/replace dialog hook proc
 330 // ----------------------------------------------------------------------------
 331
 332 UINT_PTR CALLBACK
 333 wxFindReplaceDialogHookProc(HWND hwnd,
 334                             UINT uiMsg,
 335                             WPARAM WXUNUSED(wParam),
 336                             LPARAM lParam)
 337 {
 338     if ( uiMsg == WM_INITDIALOG )
 339     {
 340         FINDREPLACE *pFR = (FINDREPLACE *)lParam;
 341         wxFindReplaceDialog *dialog = (wxFindReplaceDialog *)pFR->lCustData;
 342
 343         ::SetWindowText(hwnd, dialog->GetTitle());
 344
 345         // don't return FALSE from here or the dialog won't be shown
 346         return TRUE;
 347     }
 348
 349     return 0;
 350 }
 351
 352 // ============================================================================
 353 // wxFindReplaceDialog implementation
 354 // ============================================================================
 355
 356 // ----------------------------------------------------------------------------
 357 // wxFindReplaceDialog ctors/dtor
 358 // ----------------------------------------------------------------------------
 359
 360 void wxFindReplaceDialog::Init()
 361 {
 362     m_impl = NULL;
 363     m_FindReplaceData = NULL;
 364
 365     // as we're created in the hidden state, bring the internal flag in sync
 366     m_isShown = false;
 367 }
 368
 369 wxFindReplaceDialog::wxFindReplaceDialog(wxWindow *parent,
 370                                          wxFindReplaceData *data,
 371                                          const wxString &title,
 372                                          int flags)
 373                    : wxFindReplaceDialogBase(parent, data, title, flags)
 374 {
 375     Init();
 376
 377     (void)Create(parent, data, title, flags);
 378 }
 379
 380 wxFindReplaceDialog::~wxFindReplaceDialog()
 381 {
 382     // the dialog might have been already deleted if the user closed it
 383     // manually but in this case we should have got a notification about it and
 384     // the flagmust have been set
 385     if ( !m_impl->WasClosedByUser() )
 386     {
 387         // if it wasn't, delete the dialog ourselves
 388         if ( !::DestroyWindow(GetHwnd()) )
 389         {
 390             wxLogLastError(_T("DestroyWindow(find dialog)"));
 391         }
 392     }
 393
 394     // unsubclass the parent
 395     delete m_impl;
 396
 397     // prevent the base class dtor from trying to hide us!
 398     m_isShown = false;
 399
 400     // and from destroying our window [again]
 401     m_hWnd = (WXHWND)NULL;
 402 }
 403
 404 bool wxFindReplaceDialog::Create(wxWindow *parent,
 405                                  wxFindReplaceData *data,
 406                                  const wxString &title,
 407                                  int flags)
 408 {
 409     m_windowStyle = flags;
 410     m_FindReplaceData = data;
 411     m_parent = parent;
 412
 413     SetTitle(title);
 414
 415     // we must have a parent as it will get the messages from us
 416     return parent != NULL;
 417 }
 418
 419 // ----------------------------------------------------------------------------
 420 // wxFindReplaceData show/hide
 421 // ----------------------------------------------------------------------------
 422
 423 bool wxFindReplaceDialog::Show(bool show)
 424 {
 425     if ( !wxWindowBase::Show(show) )
 426     {
 427         // visibility status didn't change
 428         return false;
 429     }
 430
 431     // do we already have the dialog window?
 432     if ( m_hWnd )
 433     {
 434         // yes, just use it
 435         (void)::ShowWindow(GetHwnd(), show ? SW_SHOW : SW_HIDE);
 436
 437         return true;
 438     }
 439
 440     if ( !show )
 441     {
 442         // well, it doesn't exist which is as good as being hidden
 443         return true;
 444     }
 445
 446     wxCHECK_MSG( m_FindReplaceData, false, _T("call Create() first!") );
 447
 448     wxASSERT_MSG( !m_impl, _T("why don't we have the window then?") );
 449
 450     m_impl = new wxFindReplaceDialogImpl(this, m_FindReplaceData->GetFlags());
 451
 452     m_impl->InitFindWhat(m_FindReplaceData->GetFindString());
 453
 454     bool replace = HasFlag(wxFR_REPLACEDIALOG);
 455     if ( replace )
 456     {
 457         m_impl->InitReplaceWith(m_FindReplaceData->GetReplaceString());
 458     }
 459
 460     // call the right function to show the dialog which does what we want
 461     FINDREPLACE *pFR = m_impl->GetPtrFindReplace();
 462     HWND hwnd;
 463     if ( replace )
 464         hwnd = ::ReplaceText(pFR);
 465     else
 466         hwnd = ::FindText(pFR);
 467
 468     if ( !hwnd )
 469     {
 470         wxLogError(_("Failed to create the standard find/replace dialog (error code %d)"),
 471                    ::CommDlgExtendedError());
 472
 473         delete m_impl;
 474         m_impl = NULL;
 475
 476         return false;
 477     }
 478
 479     // subclass parent window in order to get FINDMSGSTRING message
 480     m_impl->SubclassDialog(GetHwndOf(m_parent));
 481
 482     if ( !::ShowWindow(hwnd, SW_SHOW) )
 483     {
 484         wxLogLastError(_T("ShowWindow(find dialog)"));
 485     }
 486
 487     m_hWnd = (WXHWND)hwnd;
 488
 489     return true;
 490 }
 491
 492 // ----------------------------------------------------------------------------
 493 // wxFindReplaceDialog title handling
 494 // ----------------------------------------------------------------------------
 495
 496 // we set the title of this dialog in our jook proc but for now don't crash in
 497 // the base class version because of m_hWnd == 0
 498
 499 void wxFindReplaceDialog::SetTitle( const wxString& title)
 500 {
 501     m_title = title;
 502 }
 503
 504 wxString wxFindReplaceDialog::GetTitle() const
 505 {
 506     return m_title;
 507 }
 508
 509 // ----------------------------------------------------------------------------
 510 // wxFindReplaceDialog position/size
 511 // ----------------------------------------------------------------------------
 512
 513 void wxFindReplaceDialog::DoSetSize(int WXUNUSED(x), int WXUNUSED(y),
 514                                     int WXUNUSED(width), int WXUNUSED(height),
 515                                     int WXUNUSED(sizeFlags))
 516 {
 517     // ignore - we can't change the size of this standard dialog
 518     return;
 519 }
 520
 521 // NB: of course, both of these functions are completely bogus, but it's better
 522 //     than nothing
 523 void wxFindReplaceDialog::DoGetSize(int *width, int *height) const
 524 {
 525     // the standard dialog size
 526     if ( width )
 527         *width = 225;
 528     if ( height )
 529         *height = 324;
 530 }
 531
 532 void wxFindReplaceDialog::DoGetClientSize(int *width, int *height) const
 533 {
 534     // the standard dialog size
 535     if ( width )
 536         *width = 219;
 537     if ( height )
 538         *height = 299;
 539 }
 540
 541 #endif // wxUSE_FINDREPLDLG