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:
   8 // Copyright:   (c) Markus Greither
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "mswfdrepdlg.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_FINDREPLDLG
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/intl.h"
  35     #include "wx/log.h"
  36 #endif
  37
  38 #include "wx/msw/private.h"
  39
  40 #if !defined(__WIN32__) || defined(__WXWINCE__)
  41     #include <commdlg.h>
  42 #endif
  43
  44 #include "wx/fdrepdlg.h"
  45
  46 // ----------------------------------------------------------------------------
  47 // functions prototypes
  48 // ----------------------------------------------------------------------------
  49
  50 LRESULT APIENTRY wxFindReplaceWindowProc(HWND hwnd, WXUINT nMsg,
  51                                        WPARAM wParam, LPARAM lParam);
  52
  53 UINT_PTR CALLBACK wxFindReplaceDialogHookProc(HWND hwnd,
  54                                               UINT uiMsg,
  55                                               WPARAM wParam,
  56                                               LPARAM lParam);
  57
  58 // ----------------------------------------------------------------------------
  59 // wxWin macros
  60 // ----------------------------------------------------------------------------
  61
  62 IMPLEMENT_DYNAMIC_CLASS(wxFindReplaceDialog, wxDialog)
  63
  64 // ----------------------------------------------------------------------------
  65 // wxFindReplaceDialogImpl: the internals of wxFindReplaceDialog
  66 // ----------------------------------------------------------------------------
  67
  68 class WXDLLEXPORT wxFindReplaceDialogImpl
  69 {
  70 public:
  71     wxFindReplaceDialogImpl(wxFindReplaceDialog *dialog, int flagsWX);
  72     ~wxFindReplaceDialogImpl();
  73
  74     void InitFindWhat(const wxString& str);
  75     void InitReplaceWith(const wxString& str);
  76
  77     void SubclassDialog(HWND hwnd);
  78
  79     static UINT GetFindDialogMessage() { return ms_msgFindDialog; }
  80
  81     // only for passing to ::FindText or ::ReplaceText
  82     FINDREPLACE *GetPtrFindReplace() { return &m_findReplace; }
  83
  84     // set/query the "closed by user" flag
  85     void SetClosedByUser() { m_wasClosedByUser = true; }
  86     bool WasClosedByUser() const { return m_wasClosedByUser; }
  87
  88 private:
  89     void InitString(const wxString& str, LPTSTR *ppStr, WORD *pLen);
  90
  91     // the owner of the dialog
  92     HWND m_hwndOwner;
  93
  94     // the previous window proc of our owner
  95     WNDPROC m_oldParentWndProc;
  96
  97     // the find replace data used by the dialog
  98     FINDREPLACE m_findReplace;
  99
 100     // true if the user closed us, false otherwise
 101     bool m_wasClosedByUser;
 102
 103     // registered Message for Dialog
 104     static UINT ms_msgFindDialog;
 105
 106     DECLARE_NO_COPY_CLASS(wxFindReplaceDialogImpl)
 107 };
 108
 109 UINT wxFindReplaceDialogImpl::ms_msgFindDialog = 0;
 110
 111 // ============================================================================
 112 // implementation
 113 // ============================================================================
 114
 115 // ----------------------------------------------------------------------------
 116 // wxFindReplaceDialogImpl
 117 // ----------------------------------------------------------------------------
 118
 119 wxFindReplaceDialogImpl::wxFindReplaceDialogImpl(wxFindReplaceDialog *dialog,
 120                                                  int flagsWX)
 121 {
 122     // get the identifier for the find dialog message if we don't have it yet
 123     if ( !ms_msgFindDialog )
 124     {
 125         ms_msgFindDialog = ::RegisterWindowMessage(FINDMSGSTRING);
 126
 127         if ( !ms_msgFindDialog )
 128         {
 129             wxLogLastError(_T("RegisterWindowMessage(FINDMSGSTRING)"));
 130         }
 131     }
 132
 133     m_hwndOwner = NULL;
 134     m_oldParentWndProc = NULL;
 135
 136     m_wasClosedByUser = false;
 137
 138     wxZeroMemory(m_findReplace);
 139
 140     // translate the flags: first the dialog creation flags
 141
 142     // always set this to be able to set the title
 143     int flags = FR_ENABLEHOOK;
 144
 145     int flagsDialog = dialog->GetWindowStyle();
 146     if ( flagsDialog & wxFR_NOMATCHCASE)
 147         flags |= FR_NOMATCHCASE;
 148     if ( flagsDialog & wxFR_NOWHOLEWORD)
 149         flags |= FR_NOWHOLEWORD;
 150     if ( flagsDialog & wxFR_NOUPDOWN)
 151         flags |= FR_NOUPDOWN;
 152
 153     // and now the flags governing the initial values of the dialogs controls
 154     if ( flagsWX & wxFR_DOWN)
 155         flags |= FR_DOWN;
 156     if ( flagsWX & wxFR_MATCHCASE)
 157         flags |= FR_MATCHCASE;
 158     if ( flagsWX & wxFR_WHOLEWORD )
 159         flags |= FR_WHOLEWORD;
 160
 161     m_findReplace.lStructSize = sizeof(FINDREPLACE);
 162     m_findReplace.hwndOwner = GetHwndOf(dialog->GetParent());
 163     m_findReplace.Flags = flags;
 164
 165     m_findReplace.lCustData = (LPARAM)dialog;
 166     m_findReplace.lpfnHook = wxFindReplaceDialogHookProc;
 167 }
 168
 169 void wxFindReplaceDialogImpl::InitString(const wxString& str,
 170                                          LPTSTR *ppStr, WORD *pLen)
 171 {
 172     size_t len = str.length() + 1;
 173     if ( len < 80 )
 174     {
 175         // MSDN docs say that the buffer must be at least 80 chars
 176         len = 80;
 177     }
 178
 179     *ppStr = new wxChar[len];
 180     wxStrcpy(*ppStr, str);
 181     *pLen = (WORD)len;
 182 }
 183
 184 void wxFindReplaceDialogImpl::InitFindWhat(const wxString& str)
 185 {
 186     InitString(str, &m_findReplace.lpstrFindWhat, &m_findReplace.wFindWhatLen);
 187 }
 188
 189 void wxFindReplaceDialogImpl::InitReplaceWith(const wxString& str)
 190 {
 191     InitString(str,
 192                &m_findReplace.lpstrReplaceWith,
 193                &m_findReplace.wReplaceWithLen);
 194 }
 195
 196 void wxFindReplaceDialogImpl::SubclassDialog(HWND hwnd)
 197 {
 198     m_hwndOwner = hwnd;
 199
 200     // check that we don't subclass the parent twice: this would be a bad idea
 201     // as then we'd have infinite recursion in wxFindReplaceWindowProc
 202     if ( !wxCheckWindowWndProc((WXHWND)hwnd, (WXFARPROC)wxFindReplaceWindowProc) )
 203     {
 204         // set the new one and save the old as user data to allow access to it
 205         // from wxFindReplaceWindowProc
 206         m_oldParentWndProc = wxSetWindowProc(hwnd, wxFindReplaceWindowProc);
 207
 208         wxSetWindowUserData(hwnd, (void *)m_oldParentWndProc);
 209     }
 210 }
 211
 212 wxFindReplaceDialogImpl::~wxFindReplaceDialogImpl()
 213 {
 214     delete [] m_findReplace.lpstrFindWhat;
 215     delete [] m_findReplace.lpstrReplaceWith;
 216
 217     if ( m_hwndOwner )
 218     {
 219         // undo subclassing
 220         wxSetWindowProc(m_hwndOwner, m_oldParentWndProc);
 221     }
 222 }
 223
 224 // ----------------------------------------------------------------------------
 225 // Window Proc for handling RegisterWindowMessage(FINDMSGSTRING)
 226 // ----------------------------------------------------------------------------
 227
 228 LRESULT APIENTRY wxFindReplaceWindowProc(HWND hwnd, WXUINT nMsg,
 229                                          WPARAM wParam, LPARAM lParam)
 230 {
 231 #if wxUSE_UNICODE_MSLU
 232     static unsigned long s_lastMsgFlags = 0;
 233
 234     // This flag helps us to identify the bogus ANSI message
 235     // sent by UNICOWS.DLL (see below)
 236     // while we're sending our message to the dialog
 237     // we ignore possible messages sent in between
 238     static bool s_blockMsg = false;
 239 #endif // wxUSE_UNICODE_MSLU
 240
 241     if ( nMsg == wxFindReplaceDialogImpl::GetFindDialogMessage() )
 242     {
 243         FINDREPLACE *pFR = (FINDREPLACE *)lParam;
 244
 245 #if wxUSE_UNICODE_MSLU
 246         // This is a hack for a MSLU problem: Versions up to 1.0.4011
 247         // of UNICOWS.DLL send the correct UNICODE item after button press
 248         // and a bogus ANSI mode item right after this, so lets ignore
 249         // the second bogus message
 250         if ( s_lastMsgFlags == pFR->Flags )
 251         {
 252             s_lastMsgFlags = 0;
 253             return 0;
 254         }
 255         s_lastMsgFlags = pFR->Flags;
 256 #endif // wxUSE_UNICODE_MSLU
 257
 258         wxFindReplaceDialog *dialog = (wxFindReplaceDialog *)pFR->lCustData;
 259
 260         // map flags from Windows
 261         wxEventType evtType;
 262
 263         bool replace = false;
 264         if ( pFR->Flags & FR_DIALOGTERM )
 265         {
 266             // we have to notify the dialog that it's being closed by user and
 267             // not deleted programmatically as it behaves differently in these
 268             // 2 cases
 269             dialog->GetImpl()->SetClosedByUser();
 270
 271             evtType = wxEVT_COMMAND_FIND_CLOSE;
 272         }
 273         else if ( pFR->Flags & FR_FINDNEXT )
 274         {
 275             evtType = wxEVT_COMMAND_FIND_NEXT;
 276         }
 277         else if ( pFR->Flags & FR_REPLACE )
 278         {
 279             evtType = wxEVT_COMMAND_FIND_REPLACE;
 280
 281             replace = true;
 282         }
 283         else if ( pFR->Flags & FR_REPLACEALL )
 284         {
 285             evtType = wxEVT_COMMAND_FIND_REPLACE_ALL;
 286
 287             replace = true;
 288         }
 289         else
 290         {
 291             wxFAIL_MSG( _T("unknown find dialog event") );
 292
 293             return 0;
 294         }
 295
 296         wxUint32 flags = 0;
 297         if ( pFR->Flags & FR_DOWN )
 298             flags |= wxFR_DOWN;
 299         if ( pFR->Flags & FR_WHOLEWORD )
 300             flags |= wxFR_WHOLEWORD;
 301         if ( pFR->Flags & FR_MATCHCASE )
 302             flags |= wxFR_MATCHCASE;
 303
 304         wxFindDialogEvent event(evtType, dialog->GetId());
 305         event.SetEventObject(dialog);
 306         event.SetFlags(flags);
 307         event.SetFindString(pFR->lpstrFindWhat);
 308         if ( replace )
 309         {
 310             event.SetReplaceString(pFR->lpstrReplaceWith);
 311         }
 312
 313 #if wxUSE_UNICODE_MSLU
 314         s_blockMsg = true;
 315 #endif // wxUSE_UNICODE_MSLU
 316
 317         dialog->Send(event);
 318
 319 #if wxUSE_UNICODE_MSLU
 320         s_blockMsg = false;
 321 #endif // wxUSE_UNICODE_MSLU
 322     }
 323 #if wxUSE_UNICODE_MSLU
 324     else if ( !s_blockMsg )
 325         s_lastMsgFlags = 0;
 326 #endif // wxUSE_UNICODE_MSLU
 327
 328     WNDPROC wndProc = (WNDPROC)wxGetWindowUserData(hwnd);
 329
 330     // sanity check
 331     wxASSERT_MSG( wndProc != wxFindReplaceWindowProc,
 332                   _T("infinite recursion detected") );
 333
 334     return ::CallWindowProc(wndProc, hwnd, nMsg, wParam, lParam);
 335 }
 336
 337 // ----------------------------------------------------------------------------
 338 // Find/replace dialog hook proc
 339 // ----------------------------------------------------------------------------
 340
 341 UINT_PTR CALLBACK
 342 wxFindReplaceDialogHookProc(HWND hwnd,
 343                             UINT uiMsg,
 344                             WPARAM WXUNUSED(wParam),
 345                             LPARAM lParam)
 346 {
 347     if ( uiMsg == WM_INITDIALOG )
 348     {
 349         FINDREPLACE *pFR = (FINDREPLACE *)lParam;
 350         wxFindReplaceDialog *dialog = (wxFindReplaceDialog *)pFR->lCustData;
 351
 352         ::SetWindowText(hwnd, dialog->GetTitle());
 353
 354         // don't return FALSE from here or the dialog won't be shown
 355         return TRUE;
 356     }
 357
 358     return 0;
 359 }
 360
 361 // ============================================================================
 362 // wxFindReplaceDialog implementation
 363 // ============================================================================
 364
 365 // ----------------------------------------------------------------------------
 366 // wxFindReplaceDialog ctors/dtor
 367 // ----------------------------------------------------------------------------
 368
 369 void wxFindReplaceDialog::Init()
 370 {
 371     m_impl = NULL;
 372     m_FindReplaceData = NULL;
 373
 374     // as we're created in the hidden state, bring the internal flag in sync
 375     m_isShown = false;
 376 }
 377
 378 wxFindReplaceDialog::wxFindReplaceDialog(wxWindow *parent,
 379                                          wxFindReplaceData *data,
 380                                          const wxString &title,
 381                                          int flags)
 382                    : wxFindReplaceDialogBase(parent, data, title, flags)
 383 {
 384     Init();
 385
 386     (void)Create(parent, data, title, flags);
 387 }
 388
 389 wxFindReplaceDialog::~wxFindReplaceDialog()
 390 {
 391     // the dialog might have been already deleted if the user closed it
 392     // manually but in this case we should have got a notification about it and
 393     // the flagmust have been set
 394     if ( !m_impl->WasClosedByUser() )
 395     {
 396         // if it wasn't, delete the dialog ourselves
 397         if ( !::DestroyWindow(GetHwnd()) )
 398         {
 399             wxLogLastError(_T("DestroyWindow(find dialog)"));
 400         }
 401     }
 402
 403     // unsubclass the parent
 404     delete m_impl;
 405
 406     // prevent the base class dtor from trying to hide us!
 407     m_isShown = false;
 408
 409     // and from destroying our window [again]
 410     m_hWnd = (WXHWND)NULL;
 411 }
 412
 413 bool wxFindReplaceDialog::Create(wxWindow *parent,
 414                                  wxFindReplaceData *data,
 415                                  const wxString &title,
 416                                  int flags)
 417 {
 418     m_windowStyle = flags;
 419     m_FindReplaceData = data;
 420     m_parent = parent;
 421
 422     SetTitle(title);
 423
 424     // we must have a parent as it will get the messages from us
 425     return parent != NULL;
 426 }
 427
 428 // ----------------------------------------------------------------------------
 429 // wxFindReplaceData show/hide
 430 // ----------------------------------------------------------------------------
 431
 432 bool wxFindReplaceDialog::Show(bool show)
 433 {
 434     if ( !wxWindowBase::Show(show) )
 435     {
 436         // visibility status didn't change
 437         return false;
 438     }
 439
 440     // do we already have the dialog window?
 441     if ( m_hWnd )
 442     {
 443         // yes, just use it
 444         (void)::ShowWindow(GetHwnd(), show ? SW_SHOW : SW_HIDE);
 445
 446         return true;
 447     }
 448
 449     if ( !show )
 450     {
 451         // well, it doesn't exist which is as good as being hidden
 452         return true;
 453     }
 454
 455     wxCHECK_MSG( m_FindReplaceData, false, _T("call Create() first!") );
 456
 457     wxASSERT_MSG( !m_impl, _T("why don't we have the window then?") );
 458
 459     m_impl = new wxFindReplaceDialogImpl(this, m_FindReplaceData->GetFlags());
 460
 461     m_impl->InitFindWhat(m_FindReplaceData->GetFindString());
 462
 463     bool replace = HasFlag(wxFR_REPLACEDIALOG);
 464     if ( replace )
 465     {
 466         m_impl->InitReplaceWith(m_FindReplaceData->GetReplaceString());
 467     }
 468
 469     // call the right function to show the dialog which does what we want
 470     FINDREPLACE *pFR = m_impl->GetPtrFindReplace();
 471     HWND hwnd;
 472     if ( replace )
 473         hwnd = ::ReplaceText(pFR);
 474     else
 475         hwnd = ::FindText(pFR);
 476
 477     if ( !hwnd )
 478     {
 479         wxLogError(_("Failed to create the standard find/replace dialog (error code %d)"),
 480                    ::CommDlgExtendedError());
 481
 482         delete m_impl;
 483         m_impl = NULL;
 484
 485         return false;
 486     }
 487
 488     // subclass parent window in order to get FINDMSGSTRING message
 489     m_impl->SubclassDialog(GetHwndOf(m_parent));
 490
 491     if ( !::ShowWindow(hwnd, SW_SHOW) )
 492     {
 493         wxLogLastError(_T("ShowWindow(find dialog)"));
 494     }
 495
 496     m_hWnd = (WXHWND)hwnd;
 497
 498     return true;
 499 }
 500
 501 // ----------------------------------------------------------------------------
 502 // wxFindReplaceDialog title handling
 503 // ----------------------------------------------------------------------------
 504
 505 // we set the title of this dialog in our jook proc but for now don't crash in
 506 // the base class version because of m_hWnd == 0
 507
 508 void wxFindReplaceDialog::SetTitle( const wxString& title)
 509 {
 510     m_title = title;
 511 }
 512
 513 wxString wxFindReplaceDialog::GetTitle() const
 514 {
 515     return m_title;
 516 }
 517
 518 // ----------------------------------------------------------------------------
 519 // wxFindReplaceDialog position/size
 520 // ----------------------------------------------------------------------------
 521
 522 void wxFindReplaceDialog::DoSetSize(int WXUNUSED(x), int WXUNUSED(y),
 523                                     int WXUNUSED(width), int WXUNUSED(height),
 524                                     int WXUNUSED(sizeFlags))
 525 {
 526     // ignore - we can't change the size of this standard dialog
 527     return;
 528 }
 529
 530 // NB: of course, both of these functions are completely bogus, but it's better
 531 //     than nothing
 532 void wxFindReplaceDialog::DoGetSize(int *width, int *height) const
 533 {
 534     // the standard dialog size
 535     if ( width )
 536         *width = 225;
 537     if ( height )
 538         *height = 324;
 539 }
 540
 541 void wxFindReplaceDialog::DoGetClientSize(int *width, int *height) const
 542 {
 543     // the standard dialog size
 544     if ( width )
 545         *width = 219;
 546     if ( height )
 547         *height = 299;
 548 }
 549
 550 #endif // wxUSE_FINDREPLDLG
 551