ResizeTab();
  return 0;
}

// Handle resize
void TTabWnd::OnSize(UINT nType, int cx, int cy) 
{
  CWnd::OnSize(nType, cx, cy);
  ResizeTab(cx,cy);
}

// Create a CView derived class as a tab
TTabItem *TTabWnd::CreatePane(LPCTSTR lpszLabel, CRuntimeClass *pViewClass, 
                                 CCreateContext *pContext)
{
  CRect rect, client;
  ASSERT(pViewClass && pContext);

  CWnd *pWnd = (CWnd*)pViewClass->CreateObject();
  if (!pWnd) 
    return NULL;
  
  GetClientRect(&client);
  rect.left = 0;
  rect.top = TABWND_HEIGHT+2;
  rect.right = client.right;
  rect.bottom = client.bottom;

  int dwStyle = AFX_WS_DEFAULT_VIEW;
  if (GetParent()->IsKindOf(RUNTIME_CLASS(CSplitterWnd))) {
    dwStyle &= ~WS_BORDER;
  }

  if (!pWnd->Create(NULL, NULL, dwStyle, rect, this, 13576+m_TabList.size(), pContext))
  {
    TRACE0("Warning: couldn't create client area for tab view\n");
    // pWnd will be cleaned up by PostNcDestroy
    return NULL;
  }

  // Insert new tab object into the list
  TTabItem *pTab = addTab(pWnd,lpszLabel);
  ASSERT(pTab);
  if (m_TabList.size() != 1) {
    pWnd->EnableWindow(FALSE);
    pWnd->ShowWindow(SW_HIDE);
  /*
  // Framework is responsible to set the active view
  } else {
    CWnd *pParent = GetParent();
    if (pParent->IsKindOf(RUNTIME_CLASS(CFrameWnd))) {
      ((CFrameWnd*)pParent)->SetActiveView((CView*)pWnd);
    } else if (pParent->IsKindOf(RUNTIME_CLASS(CSplitterWnd))) {
      ((CSplitterWnd*)pParent)->SetActivePane(0,0,pWnd);
    }
  */
  }
  return pTab;
}

// Create a splitter window as a tab
TTabItem *TTabWnd::CreatePane(LPCTSTR lpszLabel, int nRows, int nCols, 
                                 CWnd *pWnd, UINT nID)
{
  ASSERT(pWnd);
  ASSERT(pWnd->IsKindOf(RUNTIME_CLASS(CSplitterWnd)));

  // Moved to TVisualFramework to handle creation of CSplitterWnd derived classes
  //CSplitterWnd *pWnd = new CSplitterWnd;
  //if (!pWnd) 
  //  return NULL;

  int dwStyle = AFX_WS_DEFAULT_VIEW;
  dwStyle &= ~WS_BORDER;

  CSplitterWnd *pSplitter = (CSplitterWnd*)pWnd;
  if (!pSplitter->CreateStatic(this, nRows, nCols, dwStyle, nID)) {
    TRACE0("Warning: couldn't create client area for tab view\n");
    // pWnd will be cleaned up by PostNcDestroy
    return NULL;
  }

  TTabItem *pTab = addTab(pWnd,lpszLabel);
  ASSERT(pTab);
  if (m_TabList.size() != 1) {
    pWnd->EnableWindow(FALSE);
    pWnd->ShowWindow(SW_HIDE);
  } 

  /*
  // Framework will set the active view
  CWnd *paneWnd = pWnd->GetActivePane();
  if (paneWnd) {
    ((CFrameWnd*)GetParent())->SetActiveView((CView*)paneWnd);
  } else {
    paneWnd = pWnd->GetPane(0,0);
    pWnd->SetActivePane(0,0);
    ((CFrameWnd*)GetParent())->SetActiveView((CView*)paneWnd);
  }
  */

  return pTab;
}

//=============================================================================
// class TVisualObject
//
//=============================================================================

// Private constructor
TVisualObject::TVisualObject()
{
}

// Create a plain view
TVisualObject::TVisualObject(DWORD dwId, CCreateContext *pContext, 
                       CRuntimeClass *pClass)
{
  ASSERT(pContext);
  ASSERT(pClass);
  ASSERT(pClass->IsDerivedFrom(RUNTIME_CLASS(CView)));

  zeroAll();
  m_dwId = dwId;
  m_nObjectType = OT_VIEW;
  m_pContext = pContext;
  m_pRuntimeClass = pClass;
  checkStyle();
}

// Create a view within a tab window or a tab window
TVisualObject::TVisualObject(DWORD dwId, LPCTSTR szTitle, CCreateContext *pContext, 
                       CRuntimeClass *pClass, DWORD dwStyle)
{
  ASSERT(szTitle);
  ASSERT(pContext);
  ASSERT(pClass);

  zeroAll();
  m_dwId = dwId;
  if (pClass->IsDerivedFrom(RUNTIME_CLASS(TTabWnd))) {
    m_nObjectType = OT_TAB;
  } else if (pClass->IsDerivedFrom(RUNTIME_CLASS(CView))) {
    m_nObjectType = OT_TABVIEW;
  } else {
    ASSERT(FALSE);
  }
  m_strTitle = szTitle;
  m_pContext = pContext;
  m_pRuntimeClass = pClass;
  m_dwStyle = dwStyle;
  checkStyle();
}

// Create a splitter window
TVisualObject::TVisualObject(DWORD dwId, LPCTSTR szTitle, int nRows, int nCols, 
                       CCreateContext *pContext, DWORD dwStyle)
{
  ASSERT(szTitle);
  ASSERT(pContext);
  ASSERT(nRows);
  ASSERT(nCols);

  zeroAll();
  m_dwId = dwId;
  m_nObjectType = OT_SPLITTER;
  m_strTitle = szTitle;
  m_pContext = pContext;
  m_nRows = nRows;
  m_nCols = nCols;
  m_dwStyle = dwStyle;
  checkStyle();
}

// Create a view within a splitter window
TVisualObject::TVisualObject(DWORD dwId, int nRow, int nCol, CCreateContext *pContext, 
                       CRuntimeClass *pClass, CSize size, DWORD dwStyle)
{
  ASSERT(pContext);
  ASSERT(pClass);
  ASSERT(pClass->IsDerivedFrom(RUNTIME_CLASS(CView)) ||
         pClass->IsDerivedFrom(RUNTIME_CLASS(TTabWnd)));

  zeroAll();
  m_dwId = dwId;
  m_nObjectType = OT_SPLITTERVIEW;
  m_pContext = pContext;
  m_pRuntimeClass = pClass;
  m_nRowIndex = nRow;
  m_nColIndex = nCol;
  m_Size = size;
  m_dwStyle = dwStyle;
  checkStyle();
}

// Create a splitter within a splitter window
TVisualObject::TVisualObject(DWORD dwId, int nRow, int nCol, int nRows, int nCols, 
                       CCreateContext *pContext, DWORD dwStyle)
{
  ASSERT(pContext);
  ASSERT(nRows);
  ASSERT(nCols);

  zeroAll();
  m_dwId = dwId;
  m_nObjectType = OT_SPLITTERSPLITTER;
  m_pContext = pContext;
  m_nRowIndex = nRow;
  m_nColIndex = nCol;
  m_nRows = nRows;
  m_nCols = nCols;
  m_dwStyle = dwStyle;
  checkStyle();
}

TVisualObject::TVisualObject(const TVisualObject& obj)
{
  zeroAll();
  *this = obj;
}

TVisualObject::~TVisualObject()
{
  if (m_hIcon) {
    ::DestroyIcon(m_hIcon);
    m_hIcon = NULL;
  }
}

TVisualObject& TVisualObject::operator=(const TVisualObject& obj)
{
  // No need to copy m_ObjectList since it is populated after
  // this code is executed in STL container
  m_nObjectType = obj.m_nObjectType;
  m_dwId = obj.m_dwId;
  m_pWnd = obj.m_pWnd;
  m_pParent = obj.m_pParent;
  m_strTitle = obj.m_strTitle;
  m_nRows = obj.m_nRows;
  m_nCols = obj.m_nCols;
  m_nRowIndex = obj.m_nRowIndex;
  m_nColIndex = obj.m_nColIndex;
  m_pContext = obj.m_pContext;
  m_pRuntimeClass = obj.m_pRuntimeClass;
  m_Size = obj.m_Size;
  m_bEnabled = obj.m_bEnabled;
  m_dwStyle = obj.m_dwStyle;
  m_cHotKey = obj.m_cHotKey;
  m_hIcon = obj.m_hIcon;
  m_pOwner = obj.m_pOwner;
  m_pFramework = obj.m_pFramework;
  return *this;
}

void TVisualObject::zeroAll(void)
{
  // No need to zero m_ObjectList since it is already empty
  m_nObjectType = OT_UNKNOWN;
  m_dwId = 0;
  m_pWnd = NULL;
  m_pParent = NULL;
  m_strTitle = _T("");
  m_nRows = 0;
  m_nCols = 0;
  m_nRowIndex = 0;
  m_nColIndex = 0;
  m_pContext = NULL;
  m_pRuntimeClass = NULL;
  m_Size = CSize(0,0);
  m_bEnabled = TRUE;
  m_dwStyle = 0;
  m_cHotKey = 0;
  m_pOwner = NULL;
  m_pFramework = NULL;
  m_hIcon = NULL;
}

// Check if style is valid
void TVisualObject::checkStyle(void)
{
  if ((m_dwStyle & TOS_TABTOP) || (m_dwStyle & TOS_TABBOTTOM)) {
    ASSERT(m_pRuntimeClass);
    // Tab position valid only for tab window derived classes
    ASSERT(m_pRuntimeClass->IsDerivedFrom(RUNTIME_CLASS(TTabWnd)));
  }
  if (m_dwStyle & TOS_SELECTED) {
    // Selected valid only for tab panes that are not splitters and tabs
    // In this case, use TVisualFramework::SetActivePane() to set the active pane
    // once the framework is created
    if (m_pRuntimeClass == NULL) {
      // Splitters canot be dynamically create (m_pRuntimeClass is NULL)
      ASSERT((m_nObjectType != OT_SPLITTER) && (m_nObjectType != OT_SPLITTERVIEW));
    } else {
      ASSERT(!m_pRuntimeClass->IsDerivedFrom(RUNTIME_CLASS(TTabWnd)));
    }
  }
}

// Delete the window pointer and optionally destroy the window
void TVisualObject::Destroy(BOOL bDestroyWindow)
{
  if (m_pWnd) {
    if (bDestroyWindow)
      m_pWnd->DestroyWindow();
    delete m_pWnd;
    m_pWnd = NULL;
  }
}

// If this object is a tab window or splitter window that it 
// cannot be focused
BOOL TVisualObject::CanFocus(void)
{
  ASSERT(m_pWnd);

  if (m_pWnd->IsKindOf(RUNTIME_CLASS(CSplitterWnd)) ||
      m_pWnd->IsKindOf(RUNTIME_CLASS(TTabWnd)))
  {
    return FALSE;
  }
  return TRUE;
}

// Set hot key for this tab object
void TVisualObject::SetHotKey(CHAR cHotKey)
{
  m_cHotKey = cHotKey;
}

// Optional: Set description 
void TVisualObject::SetDescription(LPCTSTR szDesc)
{
  m_strDescription = szDesc;
}

// Optional: Set icon for tab and load it from the resource
BOOL TVisualObject::SetIcon(UINT nIconId)
{
  // Cannot specify icon if already specified
//  if (m_hIcon)
//    return FALSE;

  // Load icon if possible
  if (nIconId == 0) {
    m_hIcon = NULL;
  } else {
    m_hIcon = (HICON)::LoadImage(::AfxGetResourceHandle(), 
                        MAKEINTRESOURCE(nIconId), 
                        IMAGE_ICON, 16, 16, LR_DEFAULTCOLOR);
    if (m_hIcon == NULL)
      return FALSE;
  }
  return TRUE;
}

// Optional: Return icon handle for tab
HICON TVisualObject::GetIcon(void)
{
  return m_hIcon;
}

// Set this object as active pane
BOOL TVisualObject::SetActivePane(void)
{
  ASSERT(m_pFramework);
  return m_pFramework->SetActivePane(this);
}

// Set this tab to be active tab (not the active pane)
BOOL TVisualObject::SetActiveTab(void)
{
  ASSERT(m_pFramework);
  return m_pFramework->SetActiveTab(this);
}

// Enable/disable this object
BOOL TVisualObject::Enable(BOOL bEnable)
{
  ASSERT(m_pFramework);
  return m_pFramework->Enable(this,bEnable);
}

// Enable/disable tab
BOOL TVisualObject::EnableTab(BOOL bEnable)
{
  ASSERT(m_pFramework);
  return m_pFramework->EnableTab(this,bEnable);
}

// SHow/hide this object
BOOL TVisualObject::ShowTab(BOOL bShow)
{
  ASSERT(m_pFramework);
  return m_pFramework->ShowTab(this,bShow);
}

// Is this object enabled
BOOL TVisualObject::IsEnabled(BOOL& bEnabled)
{
  ASSERT(m_pFramework);
  return m_pFramework->IsEnabled(this,bEnabled);
}

// Is this object enabled
BOOL TVisualObject::IsTabEnabled(BOOL& bEnabled)
{
  ASSERT(m_pFramework);
  return m_pFramework->IsTabEnabled(this,bEnabled);
}

// Is this object visible
BOOL TVisualObject::IsTabVisible(BOOL& bVisible)
{
  ASSERT(m_pFramework);
  return m_pFramework->IsTabVisible(this,bVisible);
}

// Returns TRUE if this object is a tab within a tab window
BOOL TVisualObject::IsTabPane(void)
{
  ASSERT(m_pFramework);
  return m_pFramework->IsTabPane(this);
}

// Returns TRUE if this object is a tab window
BOOL TVisualObject::IsTabWindow(void)
{
  ASSERT(m_pFramework);
  return m_pFramework->IsTabWindow(this);
}

// Returns TRUE if this object is a pane within a splitter window
BOOL TVisualObject::IsSplitterPane(void)
{
  ASSERT(m_pFramework);
  return m_pFramework->IsSplitterPane(this);
}

// Returns TRUE if this object is a splitter window
BOOL TVisualObject::IsSplitterWindow(void)
{
  ASSERT(m_pFramework);
  return m_pFramework->IsSplitterWindow(this);
}

// Returns TRUE if this object is derived from CView 
BOOL TVisualObject::IsView(void)
{
  ASSERT(m_pFramework);
  return m_pFramework->IsView(this);
}

// Get object ID
#ifdef _DEBUG
DWORD TVisualObject::GetID(void)
{
  return m_dwId;
}
#endif

// Get object window
#ifdef _DEBUG
CWnd *TVisualObject::GetWnd(void)
{
  return m_pWnd;