src/mac/window.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        windows.cpp
   3 // Purpose:     wxWindow
   4 // Author:      AUTHOR
   5 // Modified by:
   6 // Created:     ??/??/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) AUTHOR
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "window.h"
  14 #endif
  15
  16 #include "wx/setup.h"
  17 #include "wx/menu.h"
  18 #include "wx/dc.h"
  19 #include "wx/dcclient.h"
  20 #include "wx/utils.h"
  21 #include "wx/app.h"
  22 #include "wx/panel.h"
  23 #include "wx/layout.h"
  24 #include "wx/dialog.h"
  25 #include "wx/listbox.h"
  26 #include "wx/button.h"
  27 #include "wx/settings.h"
  28 #include "wx/msgdlg.h"
  29 #include "wx/frame.h"
  30
  31 #include "wx/menuitem.h"
  32 #include "wx/log.h"
  33
  34 #if  wxUSE_DRAG_AND_DROP
  35 #include "wx/dnd.h"
  36 #endif
  37
  38 #include <string.h>
  39
  40 extern wxList wxPendingDelete;
  41
  42 #if !USE_SHARED_LIBRARY
  43 IMPLEMENT_DYNAMIC_CLASS(wxWindow, wxEvtHandler)
  44
  45 BEGIN_EVENT_TABLE(wxWindow, wxEvtHandler)
  46   EVT_CHAR(wxWindow::OnChar)
  47   EVT_ERASE_BACKGROUND(wxWindow::OnEraseBackground)
  48   EVT_SYS_COLOUR_CHANGED(wxWindow::OnSysColourChanged)
  49   EVT_INIT_DIALOG(wxWindow::OnInitDialog)
  50   EVT_IDLE(wxWindow::OnIdle)
  51 END_EVENT_TABLE()
  52
  53 #endif
  54
  55
  56 // Constructor
  57 wxWindow::wxWindow()
  58 {
  59     // Generic
  60     m_windowId = 0;
  61     m_windowStyle = 0;
  62     m_windowParent = NULL;
  63     m_windowEventHandler = this;
  64     m_windowName = "";
  65     m_windowCursor = *wxSTANDARD_CURSOR;
  66     m_children = new wxList;
  67     m_constraints = NULL;
  68     m_constraintsInvolvedIn = NULL;
  69     m_windowSizer = NULL;
  70     m_sizerParent = NULL;
  71     m_autoLayout = FALSE;
  72     m_windowValidator = NULL;
  73     m_defaultItem = NULL;
  74     m_returnCode = 0;
  75     m_caretWidth = 0; m_caretHeight = 0;
  76     m_caretEnabled = FALSE;
  77     m_caretShown = FALSE;
  78     m_backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE) ;
  79     // m_backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW) ; ;
  80     m_foregroundColour = *wxBLACK;
  81
  82 #if  wxUSE_DRAG_AND_DROP
  83     m_pDropTarget = NULL;
  84 #endif
  85 }
  86
  87 // Destructor
  88 wxWindow::~wxWindow()
  89 {
  90         // Have to delete constraints/sizer FIRST otherwise
  91         // sizers may try to look at deleted windows as they
  92         // delete themselves.
  93 #if wxUSE_CONSTRAINTS
  94     DeleteRelatedConstraints();
  95     if (m_constraints)
  96     {
  97         // This removes any dangling pointers to this window
  98         // in other windows' constraintsInvolvedIn lists.
  99         UnsetConstraints(m_constraints);
 100         delete m_constraints;
 101         m_constraints = NULL;
 102     }
 103     if (m_windowSizer)
 104     {
 105         delete m_windowSizer;
 106         m_windowSizer = NULL;
 107     }
 108     // If this is a child of a sizer, remove self from parent
 109     if (m_sizerParent)
 110         m_sizerParent->RemoveChild((wxWindow *)this);
 111 #endif
 112
 113     if (m_windowParent)
 114         m_windowParent->RemoveChild(this);
 115
 116     DestroyChildren();
 117
 118     // TODO: destroy the window
 119
 120     delete m_children;
 121     m_children = NULL;
 122
 123     // Just in case the window has been Closed, but
 124     // we're then deleting immediately: don't leave
 125     // dangling pointers.
 126     wxPendingDelete.DeleteObject(this);
 127
 128     if ( m_windowValidator )
 129             delete m_windowValidator;
 130 }
 131
 132 // Destroy the window (delayed, if a managed window)
 133 bool wxWindow::Destroy()
 134 {
 135     delete this;
 136     return TRUE;
 137 }
 138
 139 // Constructor
 140 bool wxWindow::Create(wxWindow *parent, wxWindowID id,
 141            const wxPoint& pos,
 142            const wxSize& size,
 143            long style,
 144            const wxString& name)
 145 {
 146     // Generic
 147     m_windowId = 0;
 148     m_windowStyle = 0;
 149     m_windowParent = NULL;
 150     m_windowEventHandler = this;
 151     m_windowName = "";
 152     m_windowCursor = *wxSTANDARD_CURSOR;
 153     m_constraints = NULL;
 154     m_constraintsInvolvedIn = NULL;
 155     m_windowSizer = NULL;
 156     m_sizerParent = NULL;
 157     m_autoLayout = FALSE;
 158     m_windowValidator = NULL;
 159
 160 #if wxUSE_DRAG_AND_DROP
 161     m_pDropTarget = NULL;
 162 #endif
 163
 164     m_caretWidth = 0; m_caretHeight = 0;
 165     m_caretEnabled = FALSE;
 166     m_caretShown = FALSE;
 167     m_minSizeX = -1;
 168     m_minSizeY = -1;
 169     m_maxSizeX = -1;
 170     m_maxSizeY = -1;
 171     m_defaultItem = NULL;
 172     m_windowParent = NULL;
 173     if (!parent)
 174         return FALSE;
 175
 176     if (parent) parent->AddChild(this);
 177
 178     m_returnCode = 0;
 179
 180     SetName(name);
 181
 182     if ( id == -1 )
 183         m_windowId = (int)NewControlId();
 184     else
 185         m_windowId = id;
 186
 187     // m_backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW) ; ;
 188     m_backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE) ;
 189     m_foregroundColour = *wxBLACK;
 190
 191     m_windowStyle = style;
 192
 193     if ( id == -1 )
 194         m_windowId = (int)NewControlId();
 195     else
 196         m_windowId = id;
 197
 198     // TODO: create the window
 199
 200     return TRUE;
 201 }
 202
 203 void wxWindow::SetFocus()
 204 {
 205     // TODO
 206 }
 207
 208 void wxWindow::Enable(bool enable)
 209 {
 210     // TODO
 211 }
 212
 213 void wxWindow::CaptureMouse()
 214 {
 215     // TODO
 216 }
 217
 218 void wxWindow::ReleaseMouse()
 219 {
 220     // TODO
 221 }
 222
 223 // Push/pop event handler (i.e. allow a chain of event handlers
 224 // be searched)
 225 void wxWindow::PushEventHandler(wxEvtHandler *handler)
 226 {
 227         handler->SetNextHandler(GetEventHandler());
 228         SetEventHandler(handler);
 229 }
 230
 231 wxEvtHandler *wxWindow::PopEventHandler(bool deleteHandler)
 232 {
 233         if ( GetEventHandler() )
 234         {
 235                 wxEvtHandler *handlerA = GetEventHandler();
 236                 wxEvtHandler *handlerB = handlerA->GetNextHandler();
 237                 handlerA->SetNextHandler(NULL);
 238                 SetEventHandler(handlerB);
 239                 if ( deleteHandler )
 240                 {
 241                         delete handlerA;
 242                         return NULL;
 243                 }
 244                 else
 245                         return handlerA;
 246         }
 247         else
 248                 return NULL;
 249 }
 250
 251 #if    wxUSE_DRAG_AND_DROP
 252
 253 void wxWindow::SetDropTarget(wxDropTarget *pDropTarget)
 254 {
 255   if ( m_pDropTarget != 0 ) {
 256     delete m_pDropTarget;
 257   }
 258
 259   m_pDropTarget = pDropTarget;
 260   if ( m_pDropTarget != 0 )
 261   {
 262     // TODO
 263   }
 264 }
 265
 266 #endif
 267
 268 // Old style file-manager drag&drop
 269 void wxWindow::DragAcceptFiles(bool accept)
 270 {
 271     // TODO
 272 }
 273
 274 // Get total size
 275 void wxWindow::GetSize(int *x, int *y) const
 276 {
 277     // TODO
 278 }
 279
 280 void wxWindow::GetPosition(int *x, int *y) const
 281 {
 282     // TODO
 283 }
 284
 285 void wxWindow::ScreenToClient(int *x, int *y) const
 286 {
 287     // TODO
 288 }
 289
 290 void wxWindow::ClientToScreen(int *x, int *y) const
 291 {
 292     // TODO
 293 }
 294
 295 void wxWindow::SetCursor(const wxCursor& cursor)
 296 {
 297   m_windowCursor = cursor;
 298   if (m_windowCursor.Ok())
 299   {
 300     // TODO
 301   }
 302 }
 303
 304
 305 // Get size *available for subwindows* i.e. excluding menu bar etc.
 306 void wxWindow::GetClientSize(int *x, int *y) const
 307 {
 308     // TODO
 309 }
 310
 311 void wxWindow::SetSize(int x, int y, int width, int height, int sizeFlags)
 312 {
 313     // TODO
 314 }
 315
 316 void wxWindow::SetClientSize(int width, int height)
 317 {
 318     // TODO
 319 }
 320
 321 // For implementation purposes - sometimes decorations make the client area
 322 // smaller
 323 wxPoint wxWindow::GetClientAreaOrigin() const
 324 {
 325     return wxPoint(0, 0);
 326 }
 327
 328 // Makes an adjustment to the window position (for example, a frame that has
 329 // a toolbar that it manages itself).
 330 void wxWindow::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags)
 331 {
 332     if (((sizeFlags & wxSIZE_NO_ADJUSTMENTS) == 0) && GetParent())
 333     {
 334         wxPoint pt(GetParent()->GetClientAreaOrigin());
 335         x += pt.x; y += pt.y;
 336     }
 337 }
 338
 339 bool wxWindow::Show(bool show)
 340 {
 341     // TODO
 342     return FALSE;
 343 }
 344
 345 bool wxWindow::IsShown() const
 346 {
 347     // TODO
 348     return FALSE;
 349 }
 350
 351 int wxWindow::GetCharHeight() const
 352 {
 353     // TODO
 354     return 0;
 355 }
 356
 357 int wxWindow::GetCharWidth() const
 358 {
 359     // TODO
 360     return 0;
 361 }
 362
 363 void wxWindow::GetTextExtent(const wxString& string, int *x, int *y,
 364                            int *descent, int *externalLeading, const wxFont *theFont, bool) const
 365 {
 366   wxFont *fontToUse = (wxFont *)theFont;
 367   if (!fontToUse)
 368     fontToUse = (wxFont *) & m_windowFont;
 369
 370     // TODO
 371 }
 372
 373 void wxWindow::Refresh(bool eraseBack, const wxRect *rect)
 374 {
 375     // TODO
 376 }
 377
 378 // Responds to colour changes: passes event on to children.
 379 void wxWindow::OnSysColourChanged(wxSysColourChangedEvent& event)
 380 {
 381     wxNode *node = GetChildren().First();
 382     while ( node )
 383     {
 384         // Only propagate to non-top-level windows
 385         wxWindow *win = (wxWindow *)node->Data();
 386         if ( win->GetParent() )
 387         {
 388             wxSysColourChangedEvent event2;
 389             event.m_eventObject = win;
 390             win->GetEventHandler()->ProcessEvent(event2);
 391         }
 392
 393         node = node->Next();
 394     }
 395 }
 396
 397 // This can be called by the app (or wxWindows) to do default processing for the current
 398 // event. Save message/event info in wxWindow so they can be used in this function.
 399 long wxWindow::Default()
 400 {
 401     // TODO
 402     return 0;
 403 }
 404
 405 void wxWindow::InitDialog()
 406 {
 407   wxInitDialogEvent event(GetId());
 408   event.SetEventObject( this );
 409   GetEventHandler()->ProcessEvent(event);
 410 }
 411
 412 // Default init dialog behaviour is to transfer data to window
 413 void wxWindow::OnInitDialog(wxInitDialogEvent& event)
 414 {
 415   TransferDataToWindow();
 416 }
 417
 418 // Caret manipulation
 419 void wxWindow::CreateCaret(int w, int h)
 420 {
 421   m_caretWidth = w;
 422   m_caretHeight = h;
 423   m_caretEnabled = TRUE;
 424 }
 425
 426 void wxWindow::CreateCaret(const wxBitmap *WXUNUSED(bitmap))
 427 {
 428     // TODO
 429 }
 430
 431 void wxWindow::ShowCaret(bool show)
 432 {
 433     // TODO
 434 }
 435
 436 void wxWindow::DestroyCaret()
 437 {
 438     // TODO
 439     m_caretEnabled = FALSE;
 440 }
 441
 442 void wxWindow::SetCaretPos(int x, int y)
 443 {
 444     // TODO
 445 }
 446
 447 void wxWindow::GetCaretPos(int *x, int *y) const
 448 {
 449     // TODO
 450 }
 451
 452 wxWindow *wxGetActiveWindow()
 453 {
 454     // TODO
 455     return NULL;
 456 }
 457
 458 void wxWindow::SetSizeHints(int minW, int minH, int maxW, int maxH, int WXUNUSED(incW), int WXUNUSED(incH))
 459 {
 460   m_minSizeX = minW;
 461   m_minSizeY = minH;
 462   m_maxSizeX = maxW;
 463   m_maxSizeY = maxH;
 464 }
 465
 466 void wxWindow::Centre(int direction)
 467 {
 468   int x, y, width, height, panel_width, panel_height, new_x, new_y;
 469
 470   wxWindow *father = (wxWindow *)GetParent();
 471   if (!father)
 472     return;
 473
 474   father->GetClientSize(&panel_width, &panel_height);
 475   GetSize(&width, &height);
 476   GetPosition(&x, &y);
 477
 478   new_x = -1;
 479   new_y = -1;
 480
 481   if (direction & wxHORIZONTAL)
 482     new_x = (int)((panel_width - width)/2);
 483
 484   if (direction & wxVERTICAL)
 485     new_y = (int)((panel_height - height)/2);
 486
 487   SetSize(new_x, new_y, -1, -1);
 488
 489 }
 490
 491 // Coordinates relative to the window
 492 void wxWindow::WarpPointer (int x_pos, int y_pos)
 493 {
 494     // TODO
 495 }
 496
 497 void wxWindow::OnEraseBackground(wxEraseEvent& event)
 498 {
 499     // TODO
 500     Default();
 501 }
 502
 503 int wxWindow::GetScrollPos(int orient) const
 504 {
 505     // TODO
 506     return 0;
 507 }
 508
 509 // This now returns the whole range, not just the number
 510 // of positions that we can scroll.
 511 int wxWindow::GetScrollRange(int orient) const
 512 {
 513     // TODO
 514     return 0;
 515 }
 516
 517 int wxWindow::GetScrollThumb(int orient) const
 518 {
 519     // TODO
 520     return 0;
 521 }
 522
 523 void wxWindow::SetScrollPos(int orient, int pos, bool refresh)
 524 {
 525     // TODO
 526     return;
 527 }
 528
 529 // New function that will replace some of the above.
 530 void wxWindow::SetScrollbar(int orient, int pos, int thumbVisible,
 531     int range, bool refresh)
 532 {
 533     // TODO
 534 }
 535
 536 // Does a physical scroll
 537 void wxWindow::ScrollWindow(int dx, int dy, const wxRect *rect)
 538 {
 539     // TODO
 540     return;
 541 }
 542
 543 void wxWindow::SetFont(const wxFont& font)
 544 {
 545     m_windowFont = font;
 546
 547     if (!m_windowFont.Ok())
 548             return;
 549     // TODO
 550 }
 551
 552 void wxWindow::OnChar(wxKeyEvent& event)
 553 {
 554     if ( event.KeyCode() == WXK_TAB ) {
 555         // propagate the TABs to the parent - it's up to it to decide what
 556         // to do with it
 557         if ( GetParent() ) {
 558             if ( GetParent()->ProcessEvent(event) )
 559                 return;
 560         }
 561     }
 562 }
 563
 564 void wxWindow::OnPaint(wxPaintEvent& event)
 565 {
 566         Default();
 567 }
 568
 569 bool wxWindow::IsEnabled() const
 570 {
 571     // TODO
 572     return FALSE;
 573 }
 574
 575 // Dialog support: override these and call
 576 // base class members to add functionality
 577 // that can't be done using validators.
 578 // NOTE: these functions assume that controls
 579 // are direct children of this window, not grandchildren
 580 // or other levels of descendant.
 581
 582 // Transfer values to controls. If returns FALSE,
 583 // it's an application error (pops up a dialog)
 584 bool wxWindow::TransferDataToWindow()
 585 {
 586         wxNode *node = GetChildren().First();
 587         while ( node )
 588         {
 589                 wxWindow *child = (wxWindow *)node->Data();
 590                 if ( child->GetValidator() &&
 591                      !child->GetValidator()->TransferToWindow() )
 592                 {
 593                         wxMessageBox("Application Error", "Could not transfer data to window", wxOK|wxICON_EXCLAMATION);
 594                         return FALSE;
 595                 }
 596
 597                 node = node->Next();
 598         }
 599         return TRUE;
 600 }
 601
 602 // Transfer values from controls. If returns FALSE,
 603 // validation failed: don't quit
 604 bool wxWindow::TransferDataFromWindow()
 605 {
 606         wxNode *node = GetChildren().First();
 607         while ( node )
 608         {
 609                 wxWindow *child = (wxWindow *)node->Data();
 610                 if ( child->GetValidator() && !child->GetValidator()->TransferFromWindow() )
 611                 {
 612                         return FALSE;
 613                 }
 614
 615                 node = node->Next();
 616         }
 617         return TRUE;
 618 }
 619
 620 bool wxWindow::Validate()
 621 {
 622         wxNode *node = GetChildren().First();
 623         while ( node )
 624         {
 625                 wxWindow *child = (wxWindow *)node->Data();
 626                 if ( child->GetValidator() && /* child->GetValidator()->Ok() && */ !child->GetValidator()->Validate(this) )
 627                 {
 628                         return FALSE;
 629                 }
 630
 631                 node = node->Next();
 632         }
 633         return TRUE;
 634 }
 635
 636 // Get the window with the focus
 637 wxWindow *wxWindow::FindFocus()
 638 {
 639     // TODO
 640     return NULL;
 641 }
 642
 643 void wxWindow::AddChild(wxWindow *child)
 644 {
 645     GetChildren().Append(child);
 646     child->m_windowParent = this;
 647 }
 648
 649 void wxWindow::RemoveChild(wxWindow *child)
 650 {
 651     GetChildren().DeleteObject(child);
 652     child->m_windowParent = NULL;
 653 }
 654
 655 void wxWindow::DestroyChildren()
 656 {
 657     wxNode *node;
 658     while ((node = GetChildren().First()) != (wxNode *)NULL) {
 659       wxWindow *child;
 660       if ((child = (wxWindow *)node->Data()) != (wxWindow *)NULL) {
 661         delete child;
 662                 if ( GetChildren().Member(child) )
 663                         delete node;
 664       }
 665     } /* while */
 666 }
 667
 668 void wxWindow::MakeModal(bool modal)
 669 {
 670   // Disable all other windows
 671   if (this->IsKindOf(CLASSINFO(wxDialog)) || this->IsKindOf(CLASSINFO(wxFrame)))
 672   {
 673     wxNode *node = wxTopLevelWindows.First();
 674     while (node)
 675     {
 676       wxWindow *win = (wxWindow *)node->Data();
 677       if (win != this)
 678         win->Enable(!modal);
 679
 680       node = node->Next();
 681     }
 682   }
 683 }
 684
 685 // If nothing defined for this, try the parent.
 686 // E.g. we may be a button loaded from a resource, with no callback function
 687 // defined.
 688 void wxWindow::OnCommand(wxWindow& win, wxCommandEvent& event)
 689 {
 690   if (GetEventHandler()->ProcessEvent(event) )
 691     return;
 692   if (m_windowParent)
 693     m_windowParent->GetEventHandler()->OnCommand(win, event);
 694 }
 695
 696 void wxWindow::SetConstraints(wxLayoutConstraints *c)
 697 {
 698   if (m_constraints)
 699   {
 700     UnsetConstraints(m_constraints);
 701     delete m_constraints;
 702   }
 703   m_constraints = c;
 704   if (m_constraints)
 705   {
 706     // Make sure other windows know they're part of a 'meaningful relationship'
 707     if (m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this))
 708       m_constraints->left.GetOtherWindow()->AddConstraintReference((wxWindow *)this);
 709     if (m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this))
 710       m_constraints->top.GetOtherWindow()->AddConstraintReference((wxWindow *)this);
 711     if (m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this))
 712       m_constraints->right.GetOtherWindow()->AddConstraintReference((wxWindow *)this);
 713     if (m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this))
 714       m_constraints->bottom.GetOtherWindow()->AddConstraintReference((wxWindow *)this);
 715     if (m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this))
 716       m_constraints->width.GetOtherWindow()->AddConstraintReference((wxWindow *)this);
 717     if (m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this))
 718       m_constraints->height.GetOtherWindow()->AddConstraintReference((wxWindow *)this);
 719     if (m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this))
 720       m_constraints->centreX.GetOtherWindow()->AddConstraintReference((wxWindow *)this);
 721     if (m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this))
 722       m_constraints->centreY.GetOtherWindow()->AddConstraintReference((wxWindow *)this);
 723   }
 724 }
 725
 726 // This removes any dangling pointers to this window
 727 // in other windows' constraintsInvolvedIn lists.
 728 void wxWindow::UnsetConstraints(wxLayoutConstraints *c)
 729 {
 730   if (c)
 731   {
 732     if (c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this))
 733       c->left.GetOtherWindow()->RemoveConstraintReference((wxWindow *)this);
 734     if (c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this))
 735       c->top.GetOtherWindow()->RemoveConstraintReference((wxWindow *)this);
 736     if (c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this))
 737       c->right.GetOtherWindow()->RemoveConstraintReference((wxWindow *)this);
 738     if (c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this))
 739       c->bottom.GetOtherWindow()->RemoveConstraintReference((wxWindow *)this);
 740     if (c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this))
 741       c->width.GetOtherWindow()->RemoveConstraintReference((wxWindow *)this);
 742     if (c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this))
 743       c->height.GetOtherWindow()->RemoveConstraintReference((wxWindow *)this);
 744     if (c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this))
 745       c->centreX.GetOtherWindow()->RemoveConstraintReference((wxWindow *)this);
 746     if (c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this))
 747       c->centreY.GetOtherWindow()->RemoveConstraintReference((wxWindow *)this);
 748   }
 749 }
 750
 751 // Back-pointer to other windows we're involved with, so if we delete
 752 // this window, we must delete any constraints we're involved with.
 753 void wxWindow::AddConstraintReference(wxWindow *otherWin)
 754 {
 755   if (!m_constraintsInvolvedIn)
 756     m_constraintsInvolvedIn = new wxList;
 757   if (!m_constraintsInvolvedIn->Member(otherWin))
 758     m_constraintsInvolvedIn->Append(otherWin);
 759 }
 760
 761 // REMOVE back-pointer to other windows we're involved with.
 762 void wxWindow::RemoveConstraintReference(wxWindow *otherWin)
 763 {
 764   if (m_constraintsInvolvedIn)
 765     m_constraintsInvolvedIn->DeleteObject(otherWin);
 766 }
 767
 768 // Reset any constraints that mention this window
 769 void wxWindow::DeleteRelatedConstraints()
 770 {
 771   if (m_constraintsInvolvedIn)
 772   {
 773     wxNode *node = m_constraintsInvolvedIn->First();
 774     while (node)
 775     {
 776       wxWindow *win = (wxWindow *)node->Data();
 777       wxNode *next = node->Next();
 778       wxLayoutConstraints *constr = win->GetConstraints();
 779
 780       // Reset any constraints involving this window
 781       if (constr)
 782       {
 783         constr->left.ResetIfWin((wxWindow *)this);
 784         constr->top.ResetIfWin((wxWindow *)this);
 785         constr->right.ResetIfWin((wxWindow *)this);
 786         constr->bottom.ResetIfWin((wxWindow *)this);
 787         constr->width.ResetIfWin((wxWindow *)this);
 788         constr->height.ResetIfWin((wxWindow *)this);
 789         constr->centreX.ResetIfWin((wxWindow *)this);
 790         constr->centreY.ResetIfWin((wxWindow *)this);
 791       }
 792       delete node;
 793       node = next;
 794     }
 795     delete m_constraintsInvolvedIn;
 796     m_constraintsInvolvedIn = NULL;
 797   }
 798 }
 799
 800 void wxWindow::SetSizer(wxSizer *sizer)
 801 {
 802   m_windowSizer = sizer;
 803   if (sizer)
 804     sizer->SetSizerParent((wxWindow *)this);
 805 }
 806
 807 /*
 808  * New version
 809  */
 810
 811 bool wxWindow::Layout()
 812 {
 813   if (GetConstraints())
 814   {
 815     int w, h;
 816     GetClientSize(&w, &h);
 817     GetConstraints()->width.SetValue(w);
 818     GetConstraints()->height.SetValue(h);
 819   }
 820
 821   // If top level (one sizer), evaluate the sizer's constraints.
 822   if (GetSizer())
 823   {
 824     int noChanges;
 825     GetSizer()->ResetConstraints();   // Mark all constraints as unevaluated
 826     GetSizer()->LayoutPhase1(&noChanges);
 827     GetSizer()->LayoutPhase2(&noChanges);
 828     GetSizer()->SetConstraintSizes(); // Recursively set the real window sizes
 829     return TRUE;
 830   }
 831   else
 832   {
 833     // Otherwise, evaluate child constraints
 834     ResetConstraints();   // Mark all constraints as unevaluated
 835     DoPhase(1);           // Just one phase need if no sizers involved
 836     DoPhase(2);
 837     SetConstraintSizes(); // Recursively set the real window sizes
 838   }
 839   return TRUE;
 840 }
 841
 842
 843 // Do a phase of evaluating constraints:
 844 // the default behaviour. wxSizers may do a similar
 845 // thing, but also impose their own 'constraints'
 846 // and order the evaluation differently.
 847 bool wxWindow::LayoutPhase1(int *noChanges)
 848 {
 849   wxLayoutConstraints *constr = GetConstraints();
 850   if (constr)
 851   {
 852     return constr->SatisfyConstraints((wxWindow *)this, noChanges);
 853   }
 854   else
 855     return TRUE;
 856 }
 857
 858 bool wxWindow::LayoutPhase2(int *noChanges)
 859 {
 860   *noChanges = 0;
 861
 862   // Layout children
 863   DoPhase(1);
 864   DoPhase(2);
 865   return TRUE;
 866 }
 867
 868 // Do a phase of evaluating child constraints
 869 bool wxWindow::DoPhase(int phase)
 870 {
 871   int noIterations = 0;
 872   int maxIterations = 500;
 873   int noChanges = 1;
 874   int noFailures = 0;
 875   wxList succeeded;
 876   while ((noChanges > 0) && (noIterations < maxIterations))
 877   {
 878     noChanges = 0;
 879     noFailures = 0;
 880     wxNode *node = GetChildren().First();
 881     while (node)
 882     {
 883       wxWindow *child = (wxWindow *)node->Data();
 884       if (!child->IsKindOf(CLASSINFO(wxFrame)) && !child->IsKindOf(CLASSINFO(wxDialog)))
 885       {
 886         wxLayoutConstraints *constr = child->GetConstraints();
 887         if (constr)
 888         {
 889           if (succeeded.Member(child))
 890           {
 891           }
 892           else
 893           {
 894             int tempNoChanges = 0;
 895             bool success = ( (phase == 1) ? child->LayoutPhase1(&tempNoChanges) : child->LayoutPhase2(&tempNoChanges) ) ;
 896             noChanges += tempNoChanges;
 897             if (success)
 898             {
 899               succeeded.Append(child);
 900             }
 901           }
 902         }
 903       }
 904       node = node->Next();
 905     }
 906     noIterations ++;
 907   }
 908   return TRUE;
 909 }
 910
 911 void wxWindow::ResetConstraints()
 912 {
 913   wxLayoutConstraints *constr = GetConstraints();
 914   if (constr)
 915   {
 916     constr->left.SetDone(FALSE);
 917     constr->top.SetDone(FALSE);
 918     constr->right.SetDone(FALSE);
 919     constr->bottom.SetDone(FALSE);
 920     constr->width.SetDone(FALSE);
 921     constr->height.SetDone(FALSE);
 922     constr->centreX.SetDone(FALSE);
 923     constr->centreY.SetDone(FALSE);
 924   }
 925   wxNode *node = GetChildren().First();
 926   while (node)
 927   {
 928     wxWindow *win = (wxWindow *)node->Data();
 929     if (!win->IsKindOf(CLASSINFO(wxFrame)) && !win->IsKindOf(CLASSINFO(wxDialog)))
 930       win->ResetConstraints();
 931     node = node->Next();
 932   }
 933 }
 934
 935 // Need to distinguish between setting the 'fake' size for
 936 // windows and sizers, and setting the real values.
 937 void wxWindow::SetConstraintSizes(bool recurse)
 938 {
 939   wxLayoutConstraints *constr = GetConstraints();
 940   if (constr && constr->left.GetDone() && constr->right.GetDone() &&
 941                 constr->width.GetDone() && constr->height.GetDone())
 942   {
 943     int x = constr->left.GetValue();
 944     int y = constr->top.GetValue();
 945     int w = constr->width.GetValue();
 946     int h = constr->height.GetValue();
 947
 948     // If we don't want to resize this window, just move it...
 949     if ((constr->width.GetRelationship() != wxAsIs) ||
 950         (constr->height.GetRelationship() != wxAsIs))
 951     {
 952       // Calls Layout() recursively. AAAGH. How can we stop that.
 953       // Simply take Layout() out of non-top level OnSizes.
 954       SizerSetSize(x, y, w, h);
 955     }
 956     else
 957     {
 958       SizerMove(x, y);
 959     }
 960   }
 961   else if (constr)
 962   {
 963     char *windowClass = this->GetClassInfo()->GetClassName();
 964
 965     wxString winName;
 966         if (GetName() == "")
 967                 winName = "unnamed";
 968         else
 969                 winName = GetName();
 970     wxDebugMsg("Constraint(s) not satisfied for window of type %s, name %s:\n", (const char *)windowClass, (const char *)winName);
 971     if (!constr->left.GetDone())
 972       wxDebugMsg("  unsatisfied 'left' constraint.\n");
 973     if (!constr->right.GetDone())
 974       wxDebugMsg("  unsatisfied 'right' constraint.\n");
 975     if (!constr->width.GetDone())
 976       wxDebugMsg("  unsatisfied 'width' constraint.\n");
 977     if (!constr->height.GetDone())
 978       wxDebugMsg("  unsatisfied 'height' constraint.\n");
 979     wxDebugMsg("Please check constraints: try adding AsIs() constraints.\n");
 980   }
 981
 982   if (recurse)
 983   {
 984     wxNode *node = GetChildren().First();
 985     while (node)
 986     {
 987       wxWindow *win = (wxWindow *)node->Data();
 988       if (!win->IsKindOf(CLASSINFO(wxFrame)) && !win->IsKindOf(CLASSINFO(wxDialog)))
 989         win->SetConstraintSizes();
 990       node = node->Next();
 991     }
 992   }
 993 }
 994
 995 // This assumes that all sizers are 'on' the same
 996 // window, i.e. the parent of this window.
 997 void wxWindow::TransformSizerToActual(int *x, int *y) const
 998 {
 999   if (!m_sizerParent || m_sizerParent->IsKindOf(CLASSINFO(wxDialog)) ||
1000                          m_sizerParent->IsKindOf(CLASSINFO(wxFrame)) )
1001     return;
1002
1003   int xp, yp;
1004   m_sizerParent->GetPosition(&xp, &yp);
1005   m_sizerParent->TransformSizerToActual(&xp, &yp);
1006   *x += xp;
1007   *y += yp;
1008 }
1009
1010 void wxWindow::SizerSetSize(int x, int y, int w, int h)
1011 {
1012         int xx = x;
1013         int yy = y;
1014   TransformSizerToActual(&xx, &yy);
1015   SetSize(xx, yy, w, h);
1016 }
1017
1018 void wxWindow::SizerMove(int x, int y)
1019 {
1020         int xx = x;
1021         int yy = y;
1022   TransformSizerToActual(&xx, &yy);
1023   Move(xx, yy);
1024 }
1025
1026 // Only set the size/position of the constraint (if any)
1027 void wxWindow::SetSizeConstraint(int x, int y, int w, int h)
1028 {
1029   wxLayoutConstraints *constr = GetConstraints();
1030   if (constr)
1031   {
1032     if (x != -1)
1033     {
1034       constr->left.SetValue(x);
1035       constr->left.SetDone(TRUE);
1036     }
1037     if (y != -1)
1038     {
1039       constr->top.SetValue(y);
1040       constr->top.SetDone(TRUE);
1041     }
1042     if (w != -1)
1043     {
1044       constr->width.SetValue(w);
1045       constr->width.SetDone(TRUE);
1046     }
1047     if (h != -1)
1048     {
1049       constr->height.SetValue(h);
1050       constr->height.SetDone(TRUE);
1051     }
1052   }
1053 }
1054
1055 void wxWindow::MoveConstraint(int x, int y)
1056 {
1057   wxLayoutConstraints *constr = GetConstraints();
1058   if (constr)
1059   {
1060     if (x != -1)
1061     {
1062       constr->left.SetValue(x);
1063       constr->left.SetDone(TRUE);
1064     }
1065     if (y != -1)
1066     {
1067       constr->top.SetValue(y);
1068       constr->top.SetDone(TRUE);
1069     }
1070   }
1071 }
1072
1073 void wxWindow::GetSizeConstraint(int *w, int *h) const
1074 {
1075   wxLayoutConstraints *constr = GetConstraints();
1076   if (constr)
1077   {
1078     *w = constr->width.GetValue();
1079     *h = constr->height.GetValue();
1080   }
1081   else
1082     GetSize(w, h);
1083 }
1084
1085 void wxWindow::GetClientSizeConstraint(int *w, int *h) const
1086 {
1087   wxLayoutConstraints *constr = GetConstraints();
1088   if (constr)
1089   {
1090     *w = constr->width.GetValue();
1091     *h = constr->height.GetValue();
1092   }
1093   else
1094     GetClientSize(w, h);
1095 }
1096
1097 void wxWindow::GetPositionConstraint(int *x, int *y) const
1098 {
1099   wxLayoutConstraints *constr = GetConstraints();
1100   if (constr)
1101   {
1102     *x = constr->left.GetValue();
1103     *y = constr->top.GetValue();
1104   }
1105   else
1106     GetPosition(x, y);
1107 }
1108
1109 bool wxWindow::Close(bool force)
1110 {
1111   wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
1112   event.SetEventObject(this);
1113   event.SetForce(force);
1114
1115   return GetEventHandler()->ProcessEvent(event);
1116 }
1117
1118 wxObject* wxWindow::GetChild(int number) const
1119 {
1120   // Return a pointer to the Nth object in the window
1121   wxNode *node = GetChildren().First();
1122   int n = number;
1123   while (node && n--)
1124     node = node->Next() ;
1125   if (node)
1126   {
1127     wxObject *obj = (wxObject *)node->Data();
1128     return(obj) ;
1129   }
1130   else
1131     return NULL ;
1132 }
1133
1134 void wxWindow::OnDefaultAction(wxControl *initiatingItem)
1135 {
1136     // Obsolete function
1137 }
1138
1139 void wxWindow::Clear()
1140 {
1141         wxClientDC dc(this);
1142     wxBrush brush(GetBackgroundColour(), wxSOLID);
1143     dc.SetBackground(brush);
1144     dc.Clear();
1145 }
1146
1147 // Fits the panel around the items
1148 void wxWindow::Fit()
1149 {
1150         int maxX = 0;
1151         int maxY = 0;
1152         wxNode *node = GetChildren().First();
1153         while ( node )
1154         {
1155                 wxWindow *win = (wxWindow *)node->Data();
1156                 int wx, wy, ww, wh;
1157                 win->GetPosition(&wx, &wy);
1158                 win->GetSize(&ww, &wh);
1159                 if ( wx + ww > maxX )
1160                         maxX = wx + ww;
1161                 if ( wy + wh > maxY )
1162                         maxY = wy + wh;
1163
1164                 node = node->Next();
1165         }
1166         SetClientSize(maxX + 5, maxY + 5);
1167 }
1168
1169 void wxWindow::SetValidator(const wxValidator& validator)
1170 {
1171         if ( m_windowValidator )
1172                 delete m_windowValidator;
1173         m_windowValidator = validator.Clone();
1174
1175         if ( m_windowValidator )
1176                 m_windowValidator->SetWindow(this) ;
1177 }
1178
1179 void wxWindow::SetAcceleratorTable(const wxAcceleratorTable& accel)
1180 {
1181     m_acceleratorTable = accel;
1182 }
1183
1184 // Find a window by id or name
1185 wxWindow *wxWindow::FindWindow(long id)
1186 {
1187         if ( GetId() == id)
1188                 return this;
1189
1190         wxNode *node = GetChildren().First();
1191         while ( node )
1192         {
1193                 wxWindow *child = (wxWindow *)node->Data();
1194                 wxWindow *found = child->FindWindow(id);
1195                 if ( found )
1196                         return found;
1197                 node = node->Next();
1198         }
1199         return NULL;
1200 }
1201
1202 wxWindow *wxWindow::FindWindow(const wxString& name)
1203 {
1204         if ( GetName() == name)
1205                 return this;
1206
1207         wxNode *node = GetChildren().First();
1208         while ( node )
1209         {
1210                 wxWindow *child = (wxWindow *)node->Data();
1211                 wxWindow *found = child->FindWindow(name);
1212                 if ( found )
1213                         return found;
1214                 node = node->Next();
1215         }
1216         return NULL;
1217 }
1218
1219 void wxWindow::OnIdle(wxIdleEvent& event)
1220 {
1221 /* TODO: you may need to do something like this
1222  * if your GUI doesn't generate enter/leave events
1223
1224     // Check if we need to send a LEAVE event
1225     if (m_mouseInWindow)
1226     {
1227         POINT pt;
1228         ::GetCursorPos(&pt);
1229         if (::WindowFromPoint(pt) != (HWND) GetHWND())
1230         {
1231             // Generate a LEAVE event
1232             m_mouseInWindow = FALSE;
1233             MSWOnMouseLeave(pt.x, pt.y, 0);
1234         }
1235     }
1236 */
1237
1238     // This calls the UI-update mechanism (querying windows for
1239     // menu/toolbar/control state information)
1240         UpdateWindowUI();
1241 }
1242
1243 // Raise the window to the top of the Z order
1244 void wxWindow::Raise()
1245 {
1246     // TODO
1247 }
1248
1249 // Lower the window to the bottom of the Z order
1250 void wxWindow::Lower()
1251 {
1252     // TODO
1253 }
1254
1255 bool wxWindow::AcceptsFocus() const
1256 {
1257   return IsShown() && IsEnabled();
1258 }
1259
1260 // Update region access
1261 wxRegion wxWindow::GetUpdateRegion() const
1262 {
1263     return m_updateRegion;
1264 }
1265
1266 bool wxWindow::IsExposed(int x, int y, int w, int h) const
1267 {
1268     return (m_updateRegion.Contains(x, y, w, h) != wxOutRegion);
1269 }
1270
1271 bool wxWindow::IsExposed(const wxPoint& pt) const
1272 {
1273     return (m_updateRegion.Contains(pt) != wxOutRegion);
1274 }
1275
1276 bool wxWindow::IsExposed(const wxRect& rect) const
1277 {
1278     return (m_updateRegion.Contains(rect) != wxOutRegion);
1279 }
1280
1281 /*
1282  * Allocates control IDs
1283  */
1284
1285 int wxWindow::NewControlId()
1286 {
1287     static int s_controlId = 0;
1288     s_controlId ++;
1289     return s_controlId;
1290 }
1291
1292