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 #ifdef __GNUG__
  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(__SALFORDC__) || defined(__WXWINE__)
  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 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 private:
  85     void InitString(const wxString& str, LPTSTR *ppStr, WORD *pLen);
  86
  87     // the owner of the dialog
  88     HWND m_hwndOwner;
  89
  90     // the previous window proc of our owner
  91     WNDPROC m_oldParentWndProc;
  92
  93     // the find replace data used by the dialog
  94     FINDREPLACE m_findReplace;
  95
  96     // registered Message for Dialog
  97     static UINT ms_msgFindDialog;
  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     wxZeroMemory(m_findReplace);
 128
 129     // translate the flags: first the dialog creation flags
 130
 131     // always set this to be able to set the title
 132     int flags = FR_ENABLEHOOK;
 133
 134     int flagsDialog = dialog->GetWindowStyle();
 135     if ( flagsDialog & wxFR_NOMATCHCASE)
 136         flags |= FR_NOMATCHCASE;
 137     if ( flagsDialog & wxFR_NOWHOLEWORD)
 138         flags |= FR_NOWHOLEWORD;
 139     if ( flagsDialog & wxFR_NOUPDOWN)
 140         flags |= FR_NOUPDOWN;
 141
 142     // and now the flags governing the initial values of the dialogs controls
 143     if ( flagsWX & wxFR_DOWN)
 144         flags |= FR_DOWN;
 145     if ( flagsWX & wxFR_MATCHCASE)
 146         flags |= FR_MATCHCASE;
 147     if ( flagsWX & wxFR_WHOLEWORD )
 148         flags |= FR_WHOLEWORD;
 149
 150     m_findReplace.lStructSize = sizeof(FINDREPLACE);
 151     m_findReplace.hwndOwner = GetHwndOf(dialog->GetParent());
 152     m_findReplace.Flags = flags;
 153
 154     m_findReplace.lCustData = (LPARAM)dialog;
 155     m_findReplace.lpfnHook = wxFindReplaceDialogHookProc;
 156 }
 157
 158 void wxFindReplaceDialogImpl::InitString(const wxString& str,
 159                                          LPTSTR *ppStr, WORD *pLen)
 160 {
 161     size_t len = str.length() + 1;
 162     if ( len < 80 )
 163     {
 164         // MSDN docs say that the buffer must be at least 80 chars
 165         len = 80;
 166     }
 167
 168     *ppStr = new wxChar[len];
 169     wxStrcpy(*ppStr, str);
 170     *pLen = len;
 171 }
 172
 173 void wxFindReplaceDialogImpl::InitFindWhat(const wxString& str)
 174 {
 175     InitString(str, &m_findReplace.lpstrFindWhat, &m_findReplace.wFindWhatLen);
 176 }
 177
 178 void wxFindReplaceDialogImpl::InitReplaceWith(const wxString& str)
 179 {
 180     InitString(str,
 181                &m_findReplace.lpstrReplaceWith,
 182                &m_findReplace.wReplaceWithLen);
 183 }
 184
 185 void wxFindReplaceDialogImpl::SubclassDialog(HWND hwnd)
 186 {
 187     m_hwndOwner = hwnd;
 188
 189     // check that we don't subclass the parent twice: this would be a bad idea
 190     // as then we'd have infinite recursion in wxFindReplaceWindowProc
 191     WNDPROC oldParentWndProc = (WNDPROC)::GetWindowLong(hwnd, GWL_WNDPROC);
 192
 193     if ( oldParentWndProc != wxFindReplaceWindowProc )
 194     {
 195         // save old wnd proc elsewhere to access it from
 196         // wxFindReplaceWindowProc
 197         m_oldParentWndProc = oldParentWndProc;
 198         (void)::SetWindowLong(hwnd, GWL_USERDATA, (LONG)oldParentWndProc);
 199
 200         // and set the new one
 201         (void)::SetWindowLong(hwnd, GWL_WNDPROC, (LONG)wxFindReplaceWindowProc);
 202     }
 203 }
 204
 205 wxFindReplaceDialogImpl::~wxFindReplaceDialogImpl()
 206 {
 207     delete [] m_findReplace.lpstrFindWhat;
 208     delete [] m_findReplace.lpstrReplaceWith;
 209
 210     if ( m_hwndOwner )
 211     {
 212         ::SetWindowLong(m_hwndOwner, GWL_WNDPROC, (LONG)m_oldParentWndProc);
 213     }
 214 }
 215
 216 // ----------------------------------------------------------------------------
 217 // Window Proc for handling RegisterWindowMessage(FINDMSGSTRING)
 218 // ----------------------------------------------------------------------------
 219
 220 LRESULT APIENTRY wxFindReplaceWindowProc(HWND hwnd, WXUINT nMsg,
 221                                          WPARAM wParam, LPARAM lParam)
 222 {
 223     if ( nMsg == wxFindReplaceDialogImpl::GetFindDialogMessage() )
 224     {
 225         FINDREPLACE *pFR = (FINDREPLACE *)lParam;
 226         wxFindReplaceDialog *dialog = (wxFindReplaceDialog *)pFR->lCustData;
 227
 228         // map flags from Windows
 229         wxEventType evtType;
 230
 231         bool replace = FALSE;
 232         if ( pFR->Flags & FR_DIALOGTERM )
 233         {
 234             evtType = wxEVT_COMMAND_FIND_CLOSE;
 235         }
 236         else if ( pFR->Flags & FR_FINDNEXT )
 237         {
 238             evtType = wxEVT_COMMAND_FIND_NEXT;
 239         }
 240         else if ( pFR->Flags & FR_REPLACE )
 241         {
 242             evtType = wxEVT_COMMAND_FIND_REPLACE;
 243
 244             replace = TRUE;
 245         }
 246         else if ( pFR->Flags & FR_REPLACEALL )
 247         {
 248             evtType = wxEVT_COMMAND_FIND_REPLACE_ALL;
 249
 250             replace = TRUE;
 251         }
 252         else
 253         {
 254             wxFAIL_MSG( _T("unknown find dialog event") );
 255
 256             return 0;
 257         }
 258
 259         wxUint32 flags = 0;
 260         if ( pFR->Flags & FR_DOWN )
 261             flags |= wxFR_DOWN;
 262         if ( pFR->Flags & FR_WHOLEWORD )
 263             flags |= wxFR_WHOLEWORD;
 264         if ( pFR->Flags & FR_MATCHCASE )
 265             flags |= wxFR_MATCHCASE;
 266
 267         wxFindDialogEvent event(evtType, dialog->GetId());
 268         event.SetEventObject(dialog);
 269         event.SetFlags(flags);
 270         event.SetFindString(pFR->lpstrFindWhat);
 271         if ( replace )
 272         {
 273             event.SetReplaceString(pFR->lpstrReplaceWith);
 274         }
 275
 276         dialog->Send(event);
 277     }
 278
 279     WNDPROC wndProc = (WNDPROC)::GetWindowLong(hwnd, GWL_USERDATA);
 280
 281     // sanity check
 282     wxASSERT_MSG( wndProc != wxFindReplaceWindowProc,
 283                   _T("infinite recursion detected") );
 284
 285     return ::CallWindowProc(wndProc, hwnd, nMsg, wParam, lParam);
 286 }
 287
 288 // ----------------------------------------------------------------------------
 289 // Find/replace dialog hook proc
 290 // ----------------------------------------------------------------------------
 291
 292 UINT CALLBACK wxFindReplaceDialogHookProc(HWND hwnd,
 293                                           UINT uiMsg,
 294                                           WPARAM WXUNUSED(wParam),
 295                                           LPARAM lParam)
 296 {
 297     if ( uiMsg == WM_INITDIALOG )
 298     {
 299         FINDREPLACE *pFR = (FINDREPLACE *)lParam;
 300         wxFindReplaceDialog *dialog = (wxFindReplaceDialog *)pFR->lCustData;
 301
 302         ::SetWindowText(hwnd, dialog->GetTitle());
 303
 304         // don't return FALSE from here or the dialog won't be shown
 305         return TRUE;
 306     }
 307
 308     return 0;
 309 }
 310
 311 // ============================================================================
 312 // wxFindReplaceDialog implementation
 313 // ============================================================================
 314
 315 // ----------------------------------------------------------------------------
 316 // wxFindReplaceDialog ctors/dtor
 317 // ----------------------------------------------------------------------------
 318
 319 void wxFindReplaceDialog::Init()
 320 {
 321     m_impl = NULL;
 322     m_FindReplaceData = NULL;
 323
 324     // as we're created in the hidden state, bring the internal flag in sync
 325     m_isShown = FALSE;
 326 }
 327
 328 wxFindReplaceDialog::wxFindReplaceDialog(wxWindow *parent,
 329                                          wxFindReplaceData *data,
 330                                          const wxString &title,
 331                                          int flags)
 332                    : wxFindReplaceDialogBase(parent, data, title, flags)
 333 {
 334     Init();
 335
 336     (void)Create(parent, data, title, flags);
 337 }
 338
 339 wxFindReplaceDialog::~wxFindReplaceDialog()
 340 {
 341     // unsubclass the parent
 342     delete m_impl;
 343
 344     // prevent the base class dtor from trying to hide us!
 345     m_isShown = FALSE;
 346
 347     // and from destroying our window
 348     m_hWnd = (WXHWND)NULL;
 349 }
 350
 351 bool wxFindReplaceDialog::Create(wxWindow *parent,
 352                                  wxFindReplaceData *data,
 353                                  const wxString &title,
 354                                  int flags)
 355 {
 356     m_windowStyle = flags;
 357     m_FindReplaceData = data;
 358     m_parent = parent;
 359
 360     SetTitle(title);
 361
 362     // we must have a parent as it will get the messages from us
 363     return parent != NULL;
 364 }
 365
 366 // ----------------------------------------------------------------------------
 367 // wxFindReplaceData show/hide
 368 // ----------------------------------------------------------------------------
 369
 370 bool wxFindReplaceDialog::Show(bool show)
 371 {
 372     if ( !wxWindowBase::Show(show) )
 373     {
 374         // visibility status didn't change
 375         return FALSE;
 376     }
 377
 378     // do we already have the dialog window?
 379     if ( m_hWnd )
 380     {
 381         // yes, just use it
 382         (void)::ShowWindow(GetHwnd(), show ? SW_SHOW : SW_HIDE);
 383
 384         return TRUE;
 385     }
 386
 387     if ( !show )
 388     {
 389         // well, it doesn't exist which is as good as being hidden
 390         return TRUE;
 391     }
 392
 393     wxCHECK_MSG( m_FindReplaceData, FALSE, _T("call Create() first!") );
 394
 395     wxASSERT_MSG( !m_impl, _T("why don't we have the window then?") );
 396
 397     m_impl = new wxFindReplaceDialogImpl(this, m_FindReplaceData->GetFlags());
 398
 399     m_impl->InitFindWhat(m_FindReplaceData->GetFindString());
 400
 401     bool replace = HasFlag(wxFR_REPLACEDIALOG);
 402     if ( replace )
 403     {
 404         m_impl->InitReplaceWith(m_FindReplaceData->GetReplaceString());
 405     }
 406
 407     // call the right function to show the dialog which does what we want
 408     FINDREPLACE *pFR = m_impl->GetPtrFindReplace();
 409     HWND hwnd;
 410     if ( replace )
 411         hwnd = ::ReplaceText(pFR);
 412     else
 413         hwnd = ::FindText(pFR);
 414
 415     if ( !hwnd )
 416     {
 417         wxLogError(_("Failed to create the standard find/replace dialog (error code %d)"),
 418                    ::CommDlgExtendedError());
 419
 420         delete m_impl;
 421         m_impl = NULL;
 422
 423         return FALSE;
 424     }
 425
 426     // subclass parent window in order to get FINDMSGSTRING message
 427     m_impl->SubclassDialog(GetHwndOf(m_parent));
 428
 429     if ( !::ShowWindow(hwnd, SW_SHOW) )
 430     {
 431         wxLogLastError(_T("ShowWindow(find dialog)"));
 432     }
 433
 434     m_hWnd = (WXHWND)hwnd;
 435
 436     return TRUE;
 437 }
 438
 439 // ----------------------------------------------------------------------------
 440 // wxFindReplaceDialog title handling
 441 // ----------------------------------------------------------------------------
 442
 443 // we set the title of this dialog in our jook proc but for now don't crash in
 444 // the base class version because of m_hWnd == 0
 445
 446 void wxFindReplaceDialog::SetTitle( const wxString& title)
 447 {
 448     m_title = title;
 449 }
 450
 451 wxString wxFindReplaceDialog::GetTitle() const
 452 {
 453     return m_title;
 454 }
 455
 456 // ----------------------------------------------------------------------------
 457 // wxFindReplaceDialog position/size
 458 // ----------------------------------------------------------------------------
 459
 460 void wxFindReplaceDialog::DoSetSize(int WXUNUSED(x), int WXUNUSED(y),
 461                                     int WXUNUSED(width), int WXUNUSED(height),
 462                                     int WXUNUSED(sizeFlags))
 463 {
 464     // ignore - we can't change the size of this standard dialog
 465     return;
 466 }
 467
 468 // NB: of course, both of these functions are completely bogus, but it's better
 469 //     than nothing
 470 void wxFindReplaceDialog::DoGetSize(int *width, int *height) const
 471 {
 472     // the standard dialog size
 473     if ( width )
 474         *width = 225;
 475     if ( height )
 476         *height = 324;
 477 }
 478
 479 void wxFindReplaceDialog::DoGetClientSize(int *width, int *height) const
 480 {
 481     // the standard dialog size
 482     if ( width )
 483         *width = 219;
 484     if ( height )
 485         *height = 299;
 486 }
 487
 488 #endif // wxUSE_FINDREPLDLG
 489