Various tweaks, fixes, and additions

[wxWidgets.git] / contrib / src / fl / controlbar.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        No names yet.
// Purpose:     Contrib. demo
// Author:      Aleksandras Gluchovas
// Modified by:
// Created:     06/09/98
// RCS-ID:      $Id$
// Copyright:   (c) Aleksandras Gluchovas
// Licence:   	wxWindows license
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
    #pragma implementation "controlbar.h"
#endif

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
#pragma hdrstop
#endif

#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif

#include <math.h>
#include <stdlib.h>

#include "wx/string.h"
#include "wx/utils.h"     // import wxMin,wxMax macros
#include "wx/minifram.h"

#include "wx/fl/controlbar.h"

// import classes of default plugins

#include "wx/fl/panedrawpl.h"
#include "wx/fl/rowlayoutpl.h"
#include "wx/fl/antiflickpl.h"
#include "wx/fl/bardragpl.h"
#include "wx/fl/cbcustom.h"

#include "wx/fl/gcupdatesmgr.h"   // import default updates manager class ("garbage-collecting" one)
#include "wx/fl/updatesmgr.h"

#include "wx/fl/toolwnd.h"

// These are the event IDs being initialized to a value to
// meet the new event paradigm as of wx2.3.0.  Probably we
// should find a way to make these be non-global, but this
// works for right now.
#if wxCHECK_VERSION(2,3,0)
	wxEventType cbEVT_PL_LEFT_DOWN = wxNewEventType();
	wxEventType cbEVT_PL_LEFT_UP = wxNewEventType();
	wxEventType cbEVT_PL_RIGHT_DOWN = wxNewEventType();
	wxEventType cbEVT_PL_RIGHT_UP = wxNewEventType();
	wxEventType cbEVT_PL_MOTION = wxNewEventType();

	wxEventType cbEVT_PL_LEFT_DCLICK = wxNewEventType();

	wxEventType cbEVT_PL_LAYOUT_ROW = wxNewEventType();
	wxEventType cbEVT_PL_RESIZE_ROW = wxNewEventType();
	wxEventType cbEVT_PL_LAYOUT_ROWS = wxNewEventType();
	wxEventType cbEVT_PL_INSERT_BAR = wxNewEventType();
	wxEventType cbEVT_PL_RESIZE_BAR = wxNewEventType();
	wxEventType cbEVT_PL_REMOVE_BAR = wxNewEventType();
	wxEventType cbEVT_PL_SIZE_BAR_WND = wxNewEventType();

	wxEventType cbEVT_PL_DRAW_BAR_DECOR = wxNewEventType();
	wxEventType cbEVT_PL_DRAW_ROW_DECOR = wxNewEventType();
	wxEventType cbEVT_PL_DRAW_PANE_DECOR = wxNewEventType();
	wxEventType cbEVT_PL_DRAW_BAR_HANDLES = wxNewEventType();
	wxEventType cbEVT_PL_DRAW_ROW_HANDLES = wxNewEventType();
	wxEventType cbEVT_PL_DRAW_ROW_BKGROUND = wxNewEventType();
	wxEventType cbEVT_PL_DRAW_PANE_BKGROUND = wxNewEventType();

	wxEventType cbEVT_PL_START_BAR_DRAGGING = wxNewEventType();
	wxEventType cbEVT_PL_DRAW_HINT_RECT = wxNewEventType();

	wxEventType cbEVT_PL_START_DRAW_IN_AREA = wxNewEventType();
	wxEventType cbEVT_PL_FINISH_DRAW_IN_AREA = wxNewEventType();

	wxEventType cbEVT_PL_CUSTOMIZE_BAR = wxNewEventType();
	wxEventType cbEVT_PL_CUSTOMIZE_LAYOUT = wxNewEventType();

	wxEventType wxCUSTOM_CB_PLUGIN_EVENTS_START_AT = wxNewEventType();
#endif // #if wxCHECK_VERSION(2,3,0)

// some ascii-art, still can't get these *nice* cursors working on wx... :-(

static const char* _gHorizCursorImg[] = 
{
	"............XX....XX............",
	"............XX....XX............",
	"............XX....XX............",
	"............XX....XX............",
	"............XX....XX............",
	"...X........XX....XX........X...",
	"..XX........XX....XX........XX..",
	".XXX........XX....XX........XXX.",
	"XXXXXXXXXXXXXX....XXXXXXXXXXXXXX",
	".XXX........XX....XX........XXX.",
	"..XX........XX....XX........XX..",
	"...X........XX....XX........X...",
	"............XX....XX............",
	"............XX....XX............",
	"............XX....XX............",
	"............XX....XX............"
};

static const char* _gVertCursorImg[] = 
{
	"................X...............",
	"...............XXX..............",
	"..............XXXXX.............",
	".............XXXXXXX............",
	"................X...............",
	"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
	"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
	"................................",
	"................................",
	"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
	"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
	"................X...............",
	".............XXXXXXX............",
	"..............XXXXX.............",
	"...............XXX..............",
	"................X..............."
};

// helper inline functions

static inline bool rect_contains_point( const wxRect& rect, int x, int y )
{
	return ( x >= rect.x &&
		     y >= rect.y &&
			 x <  rect.x + rect.width  &&
			 y <  rect.y + rect.height );
}

static inline bool rect_hits_rect( const wxRect& r1, const wxRect& r2 )
{
	if ( ( r2.x >= r1.x && r2.x <= r1.x + r1.width ) ||
		 ( r1.x >= r2.x && r1.x <= r2.x + r2.width ) )

		if ( ( r2.y >= r1.y && r2.y <= r1.y + r1.height ) ||
			 ( r1.y >= r2.y && r1.y <= r2.y + r2.height ) )
			 
			return 1;

	return 0;
}

static inline void hide_rect( wxRect& r )
{
	r.x = 32768;
	r.y = 32768;
	r.width  = 1;
	r.height = 1;
}

static inline void clip_rect_against_rect( wxRect& r1, const wxRect& r2 )
{
	if ( r1.x < r2.x			  || 
		 r1.y < r2.y			  ||
		 r1.x >= r2.x + r2.width  ||
		 r1.y >= r2.y + r2.height 
	   ) 
	{
		hide_rect( r1 );
		return;
	}
	else
	{
		if ( r1.x + r1.width  > r2.x + r2.width )

			r1.width = r2.x + r2.width - r1.x;

		if ( r1.y + r1.height > r2.y + r2.height )

			r1.height = r2.y + r2.height - r1.y;
	}
}

/***** Implementation for class cbBarSpy *****/

IMPLEMENT_DYNAMIC_CLASS( cbBarSpy, wxEvtHandler )

cbBarSpy::cbBarSpy(void)
	: mpLayout(0),
	  mpBarWnd(0)
{}

cbBarSpy::cbBarSpy( wxFrameLayout* pPanel ) 

	: mpLayout(pPanel),
	  mpBarWnd(0)
{}

void cbBarSpy::SetBarWindow( wxWindow* pWnd )
{
	mpBarWnd = pWnd;
}

bool cbBarSpy::ProcessEvent(wxEvent& event)
{
	bool handled = wxEvtHandler::ProcessEvent( event );

	int type = event.GetEventType();

	if ( !handled && ( type == wxEVT_LEFT_DOWN ||
				       type == wxEVT_LEFT_DCLICK ) )
	{
		wxMouseEvent& mevent = *((wxMouseEvent*)&event);

		int x = mevent.m_x;
		int y = mevent.m_y;

		mpBarWnd->ClientToScreen( &x, &y );
		mpLayout->GetParentFrame().ScreenToClient( &x, &y );

		mevent.m_x = x;
		mevent.m_y = y;

		// forwared not-handled event to frame-layout

		if ( type == wxEVT_LEFT_DOWN )
		{
			//mpLayout->OnLButtonDown( mevent );
			event.Skip();
		}
		else
			mpLayout->OnLDblClick( mevent );

		//event.Skip(FALSE);
	}

	return handled;
}

/***** Implementation for class wxFrameLayout *****/

IMPLEMENT_DYNAMIC_CLASS( wxFrameLayout, wxEvtHandler )

BEGIN_EVENT_TABLE( wxFrameLayout, wxEvtHandler )

	EVT_PAINT      ( wxFrameLayout::OnPaint		  )
	EVT_SIZE       ( wxFrameLayout::OnSize		  )
	EVT_LEFT_DOWN  ( wxFrameLayout::OnLButtonDown )
	EVT_LEFT_UP    ( wxFrameLayout::OnLButtonUp   )
	EVT_RIGHT_DOWN ( wxFrameLayout::OnRButtonDown )
	EVT_RIGHT_UP   ( wxFrameLayout::OnRButtonUp   )
	EVT_MOTION     ( wxFrameLayout::OnMouseMove   )

	EVT_LEFT_DCLICK( wxFrameLayout::OnLDblClick   )

	EVT_IDLE       ( wxFrameLayout::OnIdle        )
	EVT_SET_FOCUS  ( wxFrameLayout::OnSetFocus    )
	EVT_KILL_FOCUS ( wxFrameLayout::OnKillFocus   )

	EVT_ACTIVATE   ( wxFrameLayout::OnActivate    )

	EVT_ERASE_BACKGROUND( wxFrameLayout::OnEraseBackground )

END_EVENT_TABLE()

// FIXME:: how to eliminate these cut&pasted constructors?

wxFrameLayout::wxFrameLayout(void)

	: mpFrame      ( NULL ),
	  mpFrameClient( NULL ),

	  mDarkPen  ( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DSHADOW), 1, wxSOLID ),
	  mLightPen ( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DHILIGHT), 1, wxSOLID ),
	  mGrayPen  ( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE), 1, wxSOLID ),
	  mBlackPen ( wxColour(  0,  0,  0), 1, wxSOLID ),
	  mBorderPen( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE), 1, wxSOLID ),
   
	  mNullPen( wxColour(0,0,0), 1, wxTRANSPARENT ),

	  mpPaneInFocus( NULL ),
	  mpLRUPane    ( NULL ),


	  mpTopPlugin   ( NULL ),
	  mpCaputesInput( NULL ),

	  mClientWndRefreshPending( FALSE ),
	  mRecalcPending( TRUE ),
	  mCheckFocusWhenIdle( FALSE )
{
	CreateCursors();

	for( int i = 0; i != MAX_PANES; ++i )
	
		mPanes[i]  = NULL;

	mFloatingOn = CanReparent();
}

wxFrameLayout::wxFrameLayout( wxWindow* pParentFrame, wxWindow* pFrameClient, bool activateNow )

	: mpFrame( pParentFrame ),
	  mpFrameClient(pFrameClient),

	  mDarkPen  ( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DSHADOW), 1, wxSOLID ),
	  mLightPen ( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DHILIGHT), 1, wxSOLID ),
	  mGrayPen  ( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE), 1, wxSOLID ),
	  mBlackPen ( wxColour(  0,  0,  0), 1, wxSOLID ),
	  mBorderPen( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE), 1, wxSOLID ),
      
	  mNullPen( wxColour(0,0,0), 1, wxTRANSPARENT ),

	  mpPaneInFocus( NULL ),
	  mpLRUPane    ( NULL ),
      
	  mFloatingOn   ( TRUE ),
                 
	  mpTopPlugin   ( NULL ),
	  mpCaputesInput( NULL ),
	  
      mClientWndRefreshPending( FALSE ),
      mRecalcPending( TRUE ),
	  mCheckFocusWhenIdle( FALSE ),
	  
      mpUpdatesMgr( NULL )
{
	CreateCursors();

	for( int i = 0; i != MAX_PANES; ++i )
	
		mPanes[i]  = new cbDockPane( i, this );

	if ( activateNow )
	{
		HookUpToFrame();

		// FOR NOW::
		// DBG:: set RED color of frame's background for the
		//       prurpose of tracking engine bugs "visually"

		GetParentFrame().SetBackgroundColour( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE) );
	}

	mFloatingOn = CanReparent();
}

// NOTE:: below are the only plaftorm-check "ifdef"s in the docking system!

bool wxFrameLayout::CanReparent()
{
#ifdef __WXMSW__
	return TRUE;
#elif defined (__WXGTK__)
	//return TRUE;
	return FALSE;
#else

	return FALSE; // reparenting is not yet supported by Motif and others
#endif
}

/*
#ifdef __WXMSW__
	#inlcude "windows.h"
#endif
*/

void wxFrameLayout::ReparentWindow( wxWindow* pChild, wxWindow* pNewParent )
{
#ifdef __WXMSW__
#if 0

	if ( pChild->GetParent() )
	{
		bool success = pChild->GetParent()->GetChildren().DeleteObject( pChild );

		wxASSERT( success ); // DBG::
	}

	::SetParent( (HWND)pChild->m_hWnd, (HWND)pNewParent->m_hWnd  );

	pNewParent->GetChildren().Append( pChild );

	pChild->SetParent( pNewParent );
#endif
    pChild->Reparent(pNewParent);

	return;
#elif defined(__WXGTK__)
	// FOR NOW:: floating with wxGtk still very buggy

	return;

	//pChild->ReParent( pNewParent );

	//return;
#else
	wxMessageBox( "Sorry, docking is not supported for ports other than MSW and wxGTK" );
#endif
}

void wxFrameLayout::DestroyBarWindows()
{
	wxNode* pSpy = mBarSpyList.First();

	while( pSpy )
	{
		cbBarSpy& spy = *((cbBarSpy*)pSpy->Data());

		if ( spy.mpBarWnd->GetEventHandler() == &spy )

			spy.mpBarWnd->PopEventHandler();

		delete &spy;

		pSpy = pSpy->Next();
	}

	mBarSpyList.Clear();

	for( size_t i = 0; i != mAllBars.Count(); ++i )
	{
		if ( mAllBars[i]->mpBarWnd )
		{
			mAllBars[i]->mpBarWnd->Destroy();
			mAllBars[i]->mpBarWnd = NULL;
		}
	}
}

void wxFrameLayout::ShowFloatedWindows( bool show )
{
	wxNode* pNode = mFloatedFrames.First();

	while( pNode )
	{
		cbFloatedBarWindow* pFFrm = ((cbFloatedBarWindow*)pNode->Data());

		pFFrm->Show( show );

		pNode = pNode->Next();
	}
}

wxFrameLayout::~wxFrameLayout()
{
	UnhookFromFrame();

	if ( mpUpdatesMgr )
        delete mpUpdatesMgr;

    PopAllPlugins();

	// destoy the chain of plugins from left to right

	wxEvtHandler* pCur = mpTopPlugin;

	if ( pCur )

		while ( pCur->GetPreviousHandler() )

			pCur = pCur->GetPreviousHandler();

	while ( pCur )
	{
		wxEvtHandler* pNext = pCur->GetNextHandler();

		delete pCur;

		pCur = pNext;
	}

	// destroy contents of arrays and lists

	size_t i = 0;

	for( i = 0; i != MAX_PANES; ++i )
   {
		if ( mPanes[i] ) 
            delete mPanes[i];
   }
	if ( mpHorizCursor  ) 
        delete mpHorizCursor;
	if ( mpVertCursor   ) 
        delete mpVertCursor;
	if ( mpNormalCursor ) 
        delete mpNormalCursor;
	if ( mpDragCursor   ) 
        delete mpDragCursor;
	if ( mpNECursor     ) 
        delete mpNECursor;

	wxNode* pSpy = mBarSpyList.First();

	while( pSpy )
	{
		cbBarSpy& spy = *((cbBarSpy*)pSpy->Data());

		if ( spy.mpBarWnd->GetEventHandler() == &spy )

			spy.mpBarWnd->PopEventHandler();

		delete &spy;

		pSpy = pSpy->Next();
	}

	for( i = 0; i != mAllBars.Count(); ++i )
	
		delete mAllBars[i];
}

void wxFrameLayout::EnableFloating( bool enable )
{
	mFloatingOn = enable && CanReparent();
}

void wxFrameLayout::Activate()
{
	HookUpToFrame();

	RefreshNow( TRUE );

	ShowFloatedWindows( TRUE );
}

void wxFrameLayout::Deactivate()
{
	ShowFloatedWindows( FALSE );

	UnhookFromFrame();

	HideBarWindows();
}

void wxFrameLayout::SetFrameClient( wxWindow* pFrameClient )
{
	mpFrameClient = pFrameClient;
}

wxWindow* wxFrameLayout::GetFrameClient()
{
	return mpFrameClient;
}

cbUpdatesManagerBase& wxFrameLayout::GetUpdatesManager()
{
	if ( !mpUpdatesMgr )
        mpUpdatesMgr = CreateUpdatesManager();

	return *mpUpdatesMgr;
}

void wxFrameLayout::SetUpdatesManager( cbUpdatesManagerBase* pUMgr )
{
	if ( mpUpdatesMgr )
        delete mpUpdatesMgr;

	mpUpdatesMgr = pUMgr;

	mpUpdatesMgr->SetLayout( this );
}

cbUpdatesManagerBase* wxFrameLayout::CreateUpdatesManager()
{
	return new cbGCUpdatesMgr( this );
	//return new cbSimpleUpdatesMgr( this );
}

void wxFrameLayout::AddBar( wxWindow*        pBarWnd, 
                            const cbDimInfo& dimInfo,
                            int              alignment,
                            int              rowNo,
                            int              columnPos,
                            const wxString&  name,
                            bool             spyEvents,
                            int              state
						  )
{
	if ( pBarWnd && spyEvents )
	{
		// hook up spy to bar window
		cbBarSpy* pSpy = new cbBarSpy( this );

		pSpy->SetBarWindow( pBarWnd );
		pBarWnd->PushEventHandler( pSpy );

		mBarSpyList.Append( pSpy );
	}

	cbBarInfo* pInfo = new cbBarInfo();

	pInfo->mName      = name;
	pInfo->mpBarWnd   = pBarWnd;
	pInfo->mDimInfo   = dimInfo;
	pInfo->mState     = state;
	pInfo->mAlignment = alignment;
	pInfo->mRowNo     = rowNo;
	pInfo->mBounds.x  = columnPos;

	mAllBars.Add( pInfo );

	DoSetBarState( pInfo );
}

bool wxFrameLayout::RedockBar( cbBarInfo*    pBar, 
							   const wxRect& shapeInParent,
							   cbDockPane*   pToPane,
							   bool          updateNow )
{
	if ( !pToPane )
	
		pToPane = HitTestPanes( shapeInParent, NULL );

	if ( !pToPane ) 
		
		return FALSE; // bar's shape does not hit any pane 
					 // - redocking is NOT possible

	cbDockPane* pBarPane = GetBarPane( pBar );

	if ( updateNow )

		GetUpdatesManager().OnStartChanges();

	pBarPane->RemoveBar( pBar );

	// FIXME FIXME:: the below recalc. may be a *huge* performance
	//               hit, it could be eliminated though...
	//               but first the "pane-postion-changed" problem 
	//               have to be fixed 

	RecalcLayout( FALSE );

	pToPane->InsertBar( pBar, shapeInParent );

	RecalcLayout( FALSE );

	// finish update "transaction"

	if ( updateNow )
	{
		GetUpdatesManager().OnFinishChanges();
		GetUpdatesManager().UpdateNow();
	}

	return TRUE;
}

cbBarInfo* wxFrameLayout::FindBarByName( const wxString& name )
{
	for( size_t i = 0; i != mAllBars.Count(); ++i )

		if ( mAllBars[i]->mName == name )

			return mAllBars[i];

	return NULL;
}

cbBarInfo* wxFrameLayout::FindBarByWindow( const wxWindow* pWnd )
{
	for( size_t i = 0; i != mAllBars.Count(); ++i )

		if ( mAllBars[i]->mpBarWnd == pWnd )

			return mAllBars[i];

	return NULL;
}

BarArrayT& wxFrameLayout::GetBars()
{
	return mAllBars;
}

void wxFrameLayout::SetBarState( cbBarInfo* pBar, int newState, bool updateNow )
{
	if ( newState == wxCBAR_FLOATING && !mFloatingOn )

		return;

	if ( updateNow )

		GetUpdatesManager().OnStartChanges();

	pBar->mUMgrData.SetDirty(TRUE);

	// check bar's previous state

	if ( pBar->mState != wxCBAR_HIDDEN && pBar->mState != wxCBAR_FLOATING )
	{
		cbDockPane* pPane;
		cbRowInfo*  pRow;

		bool success = LocateBar( pBar, &pRow, &pPane );

		wxASSERT( success ); // DBG::

		// save LRU-dim info before removing bar

		pBar->mDimInfo.mLRUPane = pPane->GetAlignment();
		pBar->mDimInfo.mBounds[ pPane->GetAlignment() ] = pBar->mBounds;

		// remove it from the pane it was docked on

		pPane->RemoveBar( pBar );

	}

	if ( pBar->mState == wxCBAR_FLOATING && newState != wxCBAR_FLOATING )
	{
		// remove bar's window form the containing mini-frame
		// and set it's parent to be layout's parent frame

		if ( pBar->mpBarWnd )
		{
			pBar->mpBarWnd->Show(FALSE); // to avoid flicker upon reparenting

			wxNode* pNode = mFloatedFrames.First();

			while( pNode )
			{
				cbFloatedBarWindow* pFFrm = ((cbFloatedBarWindow*)pNode->Data());

				if ( pFFrm->GetBar() == pBar )
				{
					pFFrm->Show( FALSE ); // reduces flicker sligthly 

					ReparentWindow( pBar->mpBarWnd, &GetParentFrame() );

					pBar->mBounds = pBar->mDimInfo.mBounds[ pBar->mDimInfo.mLRUPane ];

					if ( newState != wxCBAR_HIDDEN )

						pBar->mAlignment = pBar->mDimInfo.mLRUPane;

					mFloatedFrames.DeleteNode( pNode );

					pFFrm->Show( FALSE );
					pFFrm->Destroy(); break;
				}

				pNode = pNode->Next();
			}

			// FOR NOW:: excessive!
			//if ( mpFrameClient ) mpFrameClient->Refresh();
			if ( mpFrameClient )
                mClientWndRefreshPending = TRUE;
		}
	}

	pBar->mState = newState;

	DoSetBarState( pBar );

	if ( updateNow )
	{
		RecalcLayout(FALSE);

		GetUpdatesManager().OnFinishChanges();
		GetUpdatesManager().UpdateNow();
	}
}

void wxFrameLayout::InverseVisibility( cbBarInfo* pBar )
{
	wxASSERT( pBar ); // DBG::

	// "inverse" bar-visibility of the selected bar

	int newState = 0;

	if ( pBar->mState == wxCBAR_HIDDEN )
	{
		if ( pBar->mAlignment == -1 )
		{
			pBar->mAlignment = 0;       // just remove "-1" marking
			newState = wxCBAR_FLOATING;
		}
		else
		if ( pBar->mAlignment == FL_ALIGN_TOP ||
			 pBar->mAlignment == FL_ALIGN_BOTTOM )

			newState = wxCBAR_DOCKED_HORIZONTALLY;
		else
			newState = wxCBAR_DOCKED_VERTICALLY;
	}
	else
	{
		newState = wxCBAR_HIDDEN;

		if ( pBar->mState == wxCBAR_FLOATING )

			pBar->mAlignment = -1;
	}

	this->SetBarState( pBar, newState, TRUE );

	if ( newState == wxCBAR_FLOATING )

		this->RepositionFloatedBar( pBar ); 
}

void wxFrameLayout::ApplyBarProperties( cbBarInfo* pBar )
{
	if ( pBar->mState == wxCBAR_FLOATING )
	{
		RepositionFloatedBar( pBar );
	}
	else
	if ( pBar->mState == wxCBAR_DOCKED_HORIZONTALLY ||
	     pBar->mState == wxCBAR_DOCKED_VERTICALLY
	   )
	{
		// FOR NOW:: nothing
	}

}

void wxFrameLayout::RepositionFloatedBar( cbBarInfo* pBar )
{
	if ( !mFloatingOn ) return;

	wxNode* pNode = mFloatedFrames.First();

	while( pNode )
	{
		cbFloatedBarWindow* pFFrm = ((cbFloatedBarWindow*)pNode->Data());

		if ( pFFrm->GetBar() == pBar )
		{
			wxRect& bounds = pBar->mDimInfo.mBounds[wxCBAR_FLOATING];

			int x = bounds.x,
				y = bounds.y;

			GetParentFrame().ClientToScreen( &x, &y );

			pFFrm->PositionFloatedWnd( x,y, 
									   bounds.width,
									   bounds.height );

			break;
		}

		pNode = pNode->Next();
	}
}

void wxFrameLayout::DoSetBarState( cbBarInfo* pBar )
{
	if ( pBar->mState != wxCBAR_FLOATING &&
		 pBar->mState != wxCBAR_HIDDEN )
	
		// dock it

		mPanes[pBar->mAlignment]->InsertBar( pBar );
	else
	if ( pBar->mState == wxCBAR_HIDDEN )
	{
		// hide it

		if ( pBar->mpBarWnd )

			pBar->mpBarWnd->Show( FALSE );
	}
	else
	{					
		if ( !mFloatingOn ) return;

		// float it

		if ( pBar->mpBarWnd == NULL || !CanReparent() )
		{								
			// FOR NOW:: just hide it

			if ( pBar->mpBarWnd )

				pBar->mpBarWnd->Show( FALSE );

			pBar->mState = wxCBAR_HIDDEN;

			return;
		}

		cbFloatedBarWindow* pMiniFrm = new cbFloatedBarWindow();

		pMiniFrm->SetBar( pBar );
		pMiniFrm->SetLayout( this );

		pMiniFrm->Create( &GetParentFrame(), -1, pBar->mName, 
						  wxPoint( 50,50 ),
						  wxSize ( 0, 0  ),
                          wxFRAME_FLOAT_ON_PARENT  |  wxFRAME_TOOL_WINDOW
						);

		pMiniFrm->SetClient( pBar->mpBarWnd );

		ReparentWindow( pBar->mpBarWnd, pMiniFrm );

		mFloatedFrames.Append( pMiniFrm );

		wxRect& bounds = pBar->mDimInfo.mBounds[wxCBAR_FLOATING];

		// check if it wasn't floated anytime before

		if ( bounds.width == -1 )
		{
			wxRect& clntRect = GetClientRect();

			// adjust position into which the next floated bar will be placed

			if ( mNextFloatedWndPos.x + bounds.width > clntRect.width )

				mNextFloatedWndPos.x = mFloatingPosStep.x;

			if ( mNextFloatedWndPos.y + bounds.height > clntRect.height )

				mNextFloatedWndPos.y = mFloatingPosStep.y;

			bounds.x = mNextFloatedWndPos.x + clntRect.x;
			bounds.y = mNextFloatedWndPos.y + clntRect.y;

			bounds.width  = pBar->mDimInfo.mSizes[wxCBAR_FLOATING].x;
			bounds.height = pBar->mDimInfo.mSizes[wxCBAR_FLOATING].y;

			mNextFloatedWndPos.x += mFloatingPosStep.x;
			mNextFloatedWndPos.y += mFloatingPosStep.y;
		}

		pMiniFrm->Show( TRUE );

		// FIXME:: this is excessive
		pBar->mpBarWnd->Show(TRUE);
	}
}

void wxFrameLayout::RemoveBar( cbBarInfo* pBarInfo )
{
	// first, try to "guess" what was the perviouse state of the bar

	cbDockPane* pPane;
	cbRowInfo*  pRow;

	if ( LocateBar( pBarInfo, &pRow, &pPane ) )
	{
		// ...aha, bar was docked into one of the panes,
		// remove it from there

		pPane->RemoveBar( pBarInfo );
	}

	for( size_t i = 0; i != mAllBars.Count(); ++i )
	{
		if ( mAllBars[i] == pBarInfo )
		{
#if wxCHECK_VERSION(2,3,2)
			mAllBars.RemoveAt(i); 
#else
			mAllBars.Remove(i); 
#endif
			if ( pBarInfo->mpBarWnd ) // hides it's window

				pBarInfo->mpBarWnd->Show( FALSE );

			delete pBarInfo;

			return;
		}
	}
	int avoidCompilerWarning = 0;
	wxASSERT(avoidCompilerWarning); // DBG:: bar info should be present in the list of all bars of all panes

}

bool wxFrameLayout::LocateBar( cbBarInfo* pBarInfo, 
							   cbRowInfo**  ppRow,
							   cbDockPane** ppPane )
{
	(*ppRow)  = NULL;
	(*ppPane) = NULL;

	for( int n = 0; n != MAX_PANES; ++n )
	{
		wxBarIterator i( mPanes[n]->GetRowList() );

		while( i.Next() )
		
			if ( &i.BarInfo() == pBarInfo )
			{
				(*ppPane) = mPanes[n];
				(*ppRow ) = &i.RowInfo();

				return TRUE;
			}
	}

	return FALSE;
}

void wxFrameLayout::RecalcLayout( bool repositionBarsNow )
{
	mRecalcPending = FALSE;

	int frmWidth, frmHeight;
	mpFrame->GetClientSize( &frmWidth, &frmHeight );
	int paneHeight = 0;

	int curY = 0;
	int curX = 0;
	wxRect rect;

	// pane positioning priorities in decreasing order:
	// top, bottom, left, right

	// setup TOP pane

	cbDockPane* pPane = mPanes[ FL_ALIGN_TOP ];

	pPane->SetPaneWidth( frmWidth );
	pPane->RecalcLayout();

	paneHeight = pPane->GetPaneHeight();

	rect.x		= curX;
	rect.y		= curY;
	rect.width  = frmWidth;
	rect.height	= wxMin( paneHeight, frmHeight - curY );

	pPane->SetBoundsInParent( rect );

	curY += paneHeight;

	// setup BOTTOM pane

	pPane = mPanes[ FL_ALIGN_BOTTOM ];

	pPane->SetPaneWidth( frmWidth );
	pPane->RecalcLayout();

	paneHeight = pPane->GetPaneHeight();

	rect.x		= curX;
	rect.y		= wxMax( frmHeight - paneHeight, curY );
	rect.width  = frmWidth;
	rect.height = frmHeight - rect.y;

	pPane->SetBoundsInParent( rect );

	// setup LEFT pane 

	pPane = mPanes[ FL_ALIGN_LEFT ];

						 // bottom pane's y
	pPane->SetPaneWidth( rect.y - curY );

	pPane->RecalcLayout();
	paneHeight = pPane->GetPaneHeight();

				  // bottom rect's y
	rect.height = rect.y - curY;
	rect.x = curX;
	rect.y = curY;
	rect.width  = wxMin( paneHeight, frmWidth );

	pPane->SetBoundsInParent( rect );

	curX += rect.width;

	// setup RIGHT pane

	pPane = mPanes[ FL_ALIGN_RIGHT ];

						 // left pane's height
	pPane->SetPaneWidth( rect.height );

	pPane->RecalcLayout();
	paneHeight = pPane->GetPaneHeight();

				  // left pane's height
	rect.height = rect.height;
	rect.x = wxMax( frmWidth - paneHeight, curX );
	rect.y = curY;
	rect.width  = frmWidth - rect.x;

	pPane->SetBoundsInParent( rect );

	// recalc bounds of the client-window

	mClntWndBounds.x = mPanes[FL_ALIGN_LEFT]->mBoundsInParent.x + 
					   mPanes[FL_ALIGN_LEFT]->mBoundsInParent.width;
	mClntWndBounds.y = mPanes[FL_ALIGN_TOP ]->mBoundsInParent.y + 
					   mPanes[FL_ALIGN_TOP ]->mBoundsInParent.height;

	mClntWndBounds.width  = mPanes[FL_ALIGN_RIGHT]->mBoundsInParent.x -
					        mClntWndBounds.x;
	mClntWndBounds.height = mPanes[FL_ALIGN_BOTTOM]->mBoundsInParent.y -
					        mClntWndBounds.y;

	if ( repositionBarsNow )

		PositionPanes();
}

int wxFrameLayout::GetClientHeight()
{
	// for better portablility wxWindow::GetSzie() is not used here

	return mClntWndBounds.height;
}

int wxFrameLayout::GetClientWidth()
{
	// for better portablility wxWindow::GetSzie() is not used here

	return mClntWndBounds.width;
}

void wxFrameLayout::PositionClientWindow()
{
	if ( mpFrameClient )
	{
		if ( mClntWndBounds.width >= 1 && mClntWndBounds.height >= 1 )
		{
			mpFrameClient->SetSize( mClntWndBounds.x,     mClntWndBounds.y, 
									mClntWndBounds.width, mClntWndBounds.height, 0 );

			if ( !mpFrameClient->IsShown() )

				mpFrameClient->Show( TRUE );
		}
		else
			mpFrameClient->Show( FALSE );
	}
}

void wxFrameLayout::PositionPanes()
{
	PositionClientWindow();

	// FOR NOW:: excessive updates!
	// reposition bars within all panes

	for( int i = 0; i != MAX_PANES; ++i )
		
		mPanes[i]->SizePaneObjects();
}

void wxFrameLayout::OnSize( wxSizeEvent& event )
{
	if ( event.GetEventObject() == (wxObject*) mpFrame )
	
		RecalcLayout(TRUE);
}

/*** protected members ***/

void wxFrameLayout::HideBarWindows()
{
	for( size_t i = 0; i != mAllBars.Count(); ++i )

		if ( mAllBars[i]->mpBarWnd && mAllBars[i]->mState != wxCBAR_FLOATING )
		
			mAllBars[i]->mpBarWnd->Show( FALSE );

	// then floated frames

	ShowFloatedWindows( FALSE );

	if ( mpFrameClient )

		mpFrameClient->Show( FALSE );
}

void wxFrameLayout::UnhookFromFrame()
{
	// NOTE:: the SetEvtHandlerEnabled() method is not used
	//        here, since it is assumed, that unhooking layout
	//        from window may result destroying of the layout itself
	//       
	//        BUG BUG BUG (wx):: this would not be a problem if 
	//  						 wxEvtHandler's destructor would check if 
	//							 this handler is currently the top-most 
	//							 handler of some window, and additionally 
	//							 to the reconnecting itself from the chain
	//							 it would also re-setup current event handler 
	//							 of the window using wxWindow::SetEventHandler()

	// FOR NOW::

	if ( mpFrame->GetEventHandler() == this )

		mpFrame->PopEventHandler();

	return;

	// TBD ???:  Cannot reach this code
	if ( mpFrame )
	{
		if ( this == mpFrame->GetEventHandler() )
		
			mpFrame->SetEventHandler( this->GetNextHandler() );
		else
			{
				wxEvtHandler* pCur = mpFrame->GetEventHandler();

				while( pCur )
				{
					if ( pCur == this ) break;

					pCur = pCur->GetNextHandler();
				}

				// do not try to unhook ourselves if we're not hooked yet
				if ( !pCur ) return;
			}

		if ( GetPreviousHandler() )

			GetPreviousHandler()->SetNextHandler( GetNextHandler() );
		else
		{
			mpFrame->PopEventHandler();
			return;
		}


		if ( GetNextHandler() )

			GetNextHandler()->SetPreviousHandler( GetPreviousHandler() );

		SetNextHandler( NULL );
		SetPreviousHandler( NULL );
	}
}

void wxFrameLayout::HookUpToFrame()
{
	// unhook us first, we're already hooked up

	UnhookFromFrame();

	// put ourselves on top

	mpFrame->PushEventHandler( this );
}

cbDockPane* wxFrameLayout::GetBarPane( cbBarInfo* pBar )
{
	for( int i = 0; i != MAX_PANES; ++i )

		if ( mPanes[i]->BarPresent( pBar ) ) return mPanes[i];

	return NULL;
}

void wxFrameLayout::CreateCursors()
{
	/*
	// FIXME:: The below code somehow doesn't work - cursors remain unchanged
	char bits[64];
	
	set_cursor_bits( _gHorizCursorImg, bits, 32, 16 );

	mpHorizCursor = new wxCursor( bits, 32, 16 );

	set_cursor_bits( _gVertCursorImg, bits, 32, 16 );

	mpVertCursor  = new wxCursor( bits, 32, 16 );
	*/

	// FOR NOW:: use standard ones

    mpHorizCursor  = new wxCursor(wxCURSOR_SIZEWE);
    mpVertCursor   = new wxCursor(wxCURSOR_SIZENS);
	mpNormalCursor = new wxCursor(wxCURSOR_ARROW );
	mpDragCursor   = new wxCursor(wxCURSOR_CROSS );
	mpNECursor     = new wxCursor(wxCURSOR_NO_ENTRY);

	mFloatingPosStep.x = 25;
	mFloatingPosStep.y = 25;

	mNextFloatedWndPos.x = mFloatingPosStep.x;
	mNextFloatedWndPos.y = mFloatingPosStep.y;
}

bool wxFrameLayout::HitTestPane( cbDockPane* pPane, int x, int y )
{
	return rect_contains_point( pPane->GetRealRect(), x, y );
}

cbDockPane* wxFrameLayout::HitTestPanes( const wxRect& rect,
										 cbDockPane* pCurPane )
{
	// first, give the privilege to the current pane

	if ( pCurPane && rect_hits_rect( pCurPane->GetRealRect(), rect ) ) 
	
		return pCurPane;

	for( int i = 0; i != MAX_PANES; ++i )
	
		if ( pCurPane != mPanes[i] &&
		     rect_hits_rect( mPanes[i]->GetRealRect(), rect ) ) 

			return mPanes[i];

	return 0;
}

void wxFrameLayout::ForwardMouseEvent( wxMouseEvent& event, 
										   cbDockPane*   pToPane,
										   int           eventType )
{
	wxPoint pos( event.m_x, event.m_y );
	pToPane->FrameToPane( &pos.x, &pos.y );

#if wxCHECK_VERSION(2,3,0)
	if ( eventType == cbEVT_PL_LEFT_DOWN )
	{
		cbLeftDownEvent evt( pos, pToPane );
		FirePluginEvent( evt );
	}
	else if ( eventType == cbEVT_PL_LEFT_DCLICK )
	{
		cbLeftDClickEvent evt( pos, pToPane );
		FirePluginEvent( evt );
	}
	else if ( eventType == cbEVT_PL_LEFT_UP )
	{
		cbLeftUpEvent evt( pos, pToPane );
		FirePluginEvent( evt );
	}
	else if ( eventType == cbEVT_PL_RIGHT_DOWN )
	{
		cbRightDownEvent evt( pos, pToPane );
		FirePluginEvent( evt );
	}
	else if ( eventType == cbEVT_PL_RIGHT_UP )
	{
		cbRightUpEvent evt( pos, pToPane );
		FirePluginEvent( evt );
	}
	else if ( eventType == cbEVT_PL_MOTION )
	{
		cbMotionEvent evt( pos, pToPane );
		FirePluginEvent( evt );
	}
	else 
	{
		int avoidCompilerWarning = 0;
		wxASSERT(avoidCompilerWarning); // DBG::
	}
#else
	switch ( eventType )
	{
		case cbEVT_PL_LEFT_DOWN : { cbLeftDownEvent evt( pos, pToPane );
								    FirePluginEvent( evt ); break;
								  }

		case cbEVT_PL_LEFT_DCLICK:{ cbLeftDClickEvent evt( pos, pToPane );
								    FirePluginEvent( evt ); break;
								  }

		case cbEVT_PL_LEFT_UP   : { cbLeftUpEvent evt( pos, pToPane );
								    FirePluginEvent( evt ); break;
								  }

		case cbEVT_PL_RIGHT_DOWN: { cbRightDownEvent evt( pos, pToPane );
								    FirePluginEvent( evt ); break;
								  }

		case cbEVT_PL_RIGHT_UP  : { cbRightUpEvent evt( pos, pToPane );
								    FirePluginEvent( evt ); break;
								  }

		case cbEVT_PL_MOTION    : { cbMotionEvent evt( pos, pToPane );
								    FirePluginEvent( evt ); break;
								  }

		default : wxASSERT(0); // DBG::
	}
#endif // #if wxCHECK_VERSION(2,3,0)
}  // wxFrameLayout::ForwardMouseEvent()


void wxFrameLayout::RouteMouseEvent( wxMouseEvent& event, int pluginEvtType )
{
	if ( mpPaneInFocus )

		ForwardMouseEvent( event, mpPaneInFocus, pluginEvtType );
	else
	for( int i = 0; i != MAX_PANES; ++i )
	
		if ( HitTestPane( mPanes[i], event.m_x, event.m_y ) )
		{
			ForwardMouseEvent( event, mPanes[i], pluginEvtType );

			return;
		}
}

/*** event handlers ***/

void wxFrameLayout::OnRButtonDown( wxMouseEvent& event )
{
	RouteMouseEvent( event, cbEVT_PL_RIGHT_DOWN );
}

void wxFrameLayout::OnRButtonUp( wxMouseEvent& event )
{
	RouteMouseEvent( event, cbEVT_PL_RIGHT_UP );
}

void wxFrameLayout::OnLButtonDown( wxMouseEvent& event )
{
	RouteMouseEvent( event, cbEVT_PL_LEFT_DOWN );
}

void wxFrameLayout::OnLDblClick( wxMouseEvent& event )
{
	RouteMouseEvent( event, cbEVT_PL_LEFT_DCLICK );
}

void wxFrameLayout::OnLButtonUp( wxMouseEvent& event )
{
	RouteMouseEvent( event, cbEVT_PL_LEFT_UP );
}

void wxFrameLayout::OnMouseMove( wxMouseEvent& event )
{
	if ( mpPaneInFocus )
	
		ForwardMouseEvent( event, mpPaneInFocus, cbEVT_PL_MOTION );
	else
		for( int i = 0; i != MAX_PANES; ++i )
		
			if ( HitTestPane( mPanes[i], event.m_x, event.m_y ) )
			{
				if ( mpLRUPane && mpLRUPane != mPanes[i] )
				{
					// simulate "mouse-leave" event
					ForwardMouseEvent( event, mpLRUPane, cbEVT_PL_MOTION );
				}

				ForwardMouseEvent( event, mPanes[i], cbEVT_PL_MOTION );

				mpLRUPane = mPanes[i];

				return;
			}

	if ( mpLRUPane )
	{
		// simulate "mouse-leave" event
		ForwardMouseEvent( event, mpLRUPane, cbEVT_PL_MOTION );
		mpLRUPane = 0;
	}
}

void wxFrameLayout::OnPaint( wxPaintEvent& event )
{
	if ( mRecalcPending  )
	
		RecalcLayout( TRUE );

	wxPaintDC dc(mpFrame);

	for( int i = 0; i != MAX_PANES; ++i )
	{
		wxRect& rect = mPanes[i]->mBoundsInParent;

		dc.SetClippingRegion( rect.x, rect.y, rect.width, rect.height );

		mPanes[i]->PaintPane(dc);

		dc.DestroyClippingRegion();
	}

	event.Skip();
}

void wxFrameLayout::OnEraseBackground( wxEraseEvent& event )
{
	// do nothing
}

void wxFrameLayout::OnIdle( wxIdleEvent& event )
{
	wxWindow* focus = wxWindow::FindFocus();

	if ( !focus && mCheckFocusWhenIdle )
	{
		wxMessageBox( "Hi, no more focus in this app!" );

		mCheckFocusWhenIdle = FALSE;
		//ShowFloatedWindows( FALSE );
	}

	mCheckFocusWhenIdle = FALSE;

	event.Skip();
}


void wxFrameLayout::OnKillFocus( wxFocusEvent& event )
{
	//wxMessageBox( "wxFrameLayoutGot Kill Focus!" );
	//ShowFloatedWindows( FALSE );
}

void wxFrameLayout::OnSetFocus( wxFocusEvent& event )
{
	//ShowFloatedWindows( TRUE );
}

void wxFrameLayout::OnActivate( wxActivateEvent& event )
{
#if 0
	if ( event.GetActive() == FALSE )				
	{
		wxWindow* focus = wxWindow::FindFocus();

		if ( !focus || focus == &GetParentFrame() )
		{
			mCheckFocusWhenIdle = TRUE;

			if ( !focus )

				wxMessageBox("Deactivated!" );

		}
	}
#endif
}

void wxFrameLayout::GetPaneProperties( cbCommonPaneProperties& props, int alignment )
{
	props = mPanes[alignment]->mProps;
}

void wxFrameLayout::SetPaneProperties( const cbCommonPaneProperties& props, int paneMask )
{
	for( int i = 0; i != MAX_PANES; ++i )
	
		if ( mPanes[i]->MatchesMask( paneMask ) )

			mPanes[i]->mProps = props;
}

void wxFrameLayout::SetMargins( int top, int bottom, int left, int right,
		                        int paneMask )
{
	for( int i = 0; i != MAX_PANES; ++i )
	{
		cbDockPane& pane = *mPanes[i];

		if ( pane.MatchesMask( paneMask ) )
		{
			pane.mTopMargin = top;
			pane.mBottomMargin = bottom;
			pane.mLeftMargin = left;
			pane.mRightMargin = right;
		}
	}
}

void wxFrameLayout::SetPaneBackground( const wxColour& colour )
{
	mBorderPen.SetColour( colour );
}

void wxFrameLayout::RefreshNow( bool recalcLayout )
{
	if ( recalcLayout ) RecalcLayout( TRUE );

	if ( mpFrame ) mpFrame->Refresh();
}

/*** plugin-related methods ***/

void wxFrameLayout::FirePluginEvent( cbPluginEvent& event )
{
	// check state of input capture, before processing the event

	if ( mpCaputesInput ) 
	{
		bool isInputEvt = TRUE;
#if wxCHECK_VERSION(2,3,0)
		if ( event.m_eventType != cbEVT_PL_LEFT_DOWN &&
			 event.m_eventType != cbEVT_PL_LEFT_UP &&
			 event.m_eventType != cbEVT_PL_RIGHT_DOWN &&
			 event.m_eventType != cbEVT_PL_RIGHT_UP &&
			 event.m_eventType != cbEVT_PL_MOTION )
			isInputEvt = FALSE;
#else
		switch ( event.m_eventType )
		{
			case cbEVT_PL_LEFT_DOWN  : break;
			case cbEVT_PL_LEFT_UP    : break;
			case cbEVT_PL_RIGHT_DOWN : break;
			case cbEVT_PL_RIGHT_UP   : break;
			case cbEVT_PL_MOTION     : break;
			
			default : isInputEvt = FALSE; break;
		}
#endif  // #if wxCHECK_VERSION(2,3,0)

		if ( isInputEvt )
		{
			mpCaputesInput->ProcessEvent( event );
			return;
		}
	}

	GetTopPlugin().ProcessEvent( event );
}

void wxFrameLayout::CaptureEventsForPlugin ( cbPluginBase* pPlugin )
{
	// cannot capture events for more than one plugin at a time
	wxASSERT( mpCaputesInput == NULL );

	mpCaputesInput = pPlugin;

}

void wxFrameLayout::ReleaseEventsFromPlugin( cbPluginBase* pPlugin )
{
	// events should be captured first
	wxASSERT( mpCaputesInput != NULL );

	mpCaputesInput = NULL;
}

void wxFrameLayout::CaptureEventsForPane( cbDockPane* toPane )
{
	// cannot capture events twice (without releasing)
	wxASSERT( mpPaneInFocus == NULL );

	mpFrame->CaptureMouse();

	mpPaneInFocus = toPane;
}

void wxFrameLayout::ReleaseEventsFromPane( cbDockPane* fromPane )
{
	// cannot release events without capturing them
	wxASSERT( mpPaneInFocus != NULL );

	mpFrame->ReleaseMouse();

	mpPaneInFocus = NULL;
}

cbPluginBase& wxFrameLayout::GetTopPlugin()
{
	if ( !mpTopPlugin ) 
	
		PushDefaultPlugins(); // automatic configuration

	return *mpTopPlugin;
}

void wxFrameLayout::SetTopPlugin( cbPluginBase* pPlugin ) 
{ 
	mpTopPlugin = pPlugin; 
}

bool wxFrameLayout::HasTopPlugin() 
{ 
	return ( mpTopPlugin != NULL ); 
}

void wxFrameLayout::PushPlugin( cbPluginBase* pPlugin )
{
	if ( !mpTopPlugin ) 
		
		mpTopPlugin = pPlugin;
	else
	{
		pPlugin->SetNextHandler( mpTopPlugin );

		mpTopPlugin->SetPreviousHandler( pPlugin );

		mpTopPlugin = pPlugin;
	}

	mpTopPlugin->OnInitPlugin(); // notification
}

void wxFrameLayout::PopPlugin()
{
	wxASSERT( mpTopPlugin ); // DBG:: at least one plugin should be present

	cbPluginBase* pPopped = mpTopPlugin;

	mpTopPlugin = (cbPluginBase*)mpTopPlugin->GetNextHandler();

	delete pPopped;
}

void wxFrameLayout::PopAllPlugins()
{
	while( mpTopPlugin ) PopPlugin();
}

void wxFrameLayout::PushDefaultPlugins()
{
	// FIXME:: to much of the stuff for the default...

	AddPlugin( CLASSINFO( cbRowLayoutPlugin       ) );
	AddPlugin( CLASSINFO( cbBarDragPlugin         ) );
	AddPlugin( CLASSINFO( cbPaneDrawPlugin ) );
}

void wxFrameLayout::AddPlugin( wxClassInfo* pPlInfo, int paneMask )
{
	if ( FindPlugin ( pPlInfo ) ) return; // same type of plugin cannot be added twice

	cbPluginBase* pObj = (cbPluginBase*)pPlInfo->CreateObject();

	wxASSERT(pObj); // DBG:: plugin's class should be dynamic

	pObj->mPaneMask = paneMask;
	pObj->mpLayout  = this;

	PushPlugin( pObj );
}

void wxFrameLayout::AddPluginBefore( wxClassInfo* pNextPlInfo, wxClassInfo* pPlInfo, 
									   int paneMask )
{
	wxASSERT( pNextPlInfo != pPlInfo ); // DBG:: no sence

	cbPluginBase* pNextPl = FindPlugin( pNextPlInfo );

	if ( !pNextPl )
	{
		AddPlugin( pPlInfo, paneMask );

		return;
	}

	// remove existing one if present

	cbPluginBase* pExistingPl = FindPlugin( pPlInfo );
	
	if ( pExistingPl ) RemovePlugin( pPlInfo );

	// create an instance 

	cbPluginBase* pNewPl = (cbPluginBase*)pPlInfo->CreateObject();

	wxASSERT(pNewPl); // DBG:: plugin's class should be dynamic

	// insert it to the chain

	if ( pNextPl->GetPreviousHandler() )
	
		pNextPl->GetPreviousHandler()->SetNextHandler( pNewPl );
	else
		mpTopPlugin = pNewPl;

	pNewPl->SetNextHandler( pNextPl );

	pNewPl->SetPreviousHandler( pNextPl->GetPreviousHandler() );

	pNextPl->SetPreviousHandler( pNewPl );

	// set it up

	pNewPl->mPaneMask = paneMask;
	pNewPl->mpLayout  = this;

	pNewPl->OnInitPlugin();
}

void wxFrameLayout::RemovePlugin( wxClassInfo* pPlInfo )
{
	cbPluginBase* pPlugin = FindPlugin( pPlInfo );

	if ( !pPlugin ) return; // it's OK to remove not-existing plugin ;-)

	if ( pPlugin->GetPreviousHandler() == NULL )

		mpTopPlugin = (cbPluginBase*)pPlugin->GetNextHandler();

	delete pPlugin;
}

cbPluginBase* wxFrameLayout::FindPlugin( wxClassInfo* pPlInfo )
{
	cbPluginBase *pCur = mpTopPlugin;

	while( pCur )
	{
		// NOTE:: it might appear useful matching plugin
		//        classes "polymorphically":

		if ( pCur->GetClassInfo()->IsKindOf( pPlInfo ) )

			return pCur;

		pCur = (cbPluginBase*)pCur->GetNextHandler();
	}

	return NULL;
}

/***** Implementation for class cbUpdateMgrData *****/

IMPLEMENT_DYNAMIC_CLASS( cbUpdateMgrData, wxObject )

cbUpdateMgrData::cbUpdateMgrData() 

	: mPrevBounds( -1,-1,0,0 ),
	  mIsDirty( TRUE )           // inidicate initial change
{}

void cbUpdateMgrData::StoreItemState( const wxRect& boundsInParent )
{ 
	mPrevBounds = boundsInParent; 
}

void cbUpdateMgrData::SetDirty( bool isDirty )
{
	mIsDirty = isDirty;
}

void cbUpdateMgrData::SetCustomData( wxObject* pCustomData )
{
	mpCustomData = pCustomData;
}

/***** Implementation for class cbDockPane *****/

void wxBarIterator::Reset()
{
	mpRow = ( mpRows->Count() ) ? (*mpRows)[0] : NULL;
	mpBar = NULL;
}

wxBarIterator::wxBarIterator( RowArrayT& rows )

	: mpRows( &rows ),
	  mpRow ( NULL  ),
	  mpBar ( NULL  )
{
	Reset();
}

bool wxBarIterator::Next()
{	   
	if ( mpRow )
	{
		if ( mpBar )
			mpBar = mpBar->mpNext;
		else
		{
			if ( mpRow->mBars.GetCount() == 0 )
			{
				return FALSE; 
			}

			mpBar = mpRow->mBars[0];
		}
	
		if ( !mpBar )
		{	
			// skip to the next row

			mpRow = mpRow->mpNext;
	
			if ( mpRow )
	
				mpBar = mpRow->mBars[0];
			else
				return FALSE;
		}
	
		return TRUE;
	}
	else
		return FALSE;
}

cbBarInfo& wxBarIterator::BarInfo()
{
	return *mpBar;
}

cbRowInfo& wxBarIterator::RowInfo()
{
	return *mpRow;
}

/***** Implementation for class cbBarDimHandlerBase *****/

IMPLEMENT_ABSTRACT_CLASS( cbBarDimHandlerBase, wxObject )

cbBarDimHandlerBase::cbBarDimHandlerBase()
	: mRefCount(0)
{}

void cbBarDimHandlerBase::AddRef()
{
	++mRefCount;
}

void cbBarDimHandlerBase::RemoveRef()
{
	if ( --mRefCount <= 0 ) delete this;
}

/***** Implementation for class cbDimInfo *****/

IMPLEMENT_DYNAMIC_CLASS( cbDimInfo, wxObject )

cbDimInfo::cbDimInfo() 

	: mVertGap ( 0 ), 
	  mHorizGap( 0 ),

	  mIsFixed(TRUE),
	  mpHandler( NULL )
{
	for( size_t i = 0; i != MAX_BAR_STATES; ++i )
	{
		mSizes[i].x = 20;
		mSizes[i].y = 20;

		mBounds[i] = wxRect( -1,-1,-1,-1 );
	}
}

cbDimInfo::cbDimInfo( cbBarDimHandlerBase* pDimHandler,
					  bool                 isFixed	)

	: mVertGap ( 0 ),
	  mHorizGap( 0 ),
	  mIsFixed ( isFixed  ),

	  mpHandler( pDimHandler )
{
	if ( mpHandler )
	{
		// int vtad = *((int*)mpHandler);
		mpHandler->AddRef();
	}
	
	for( size_t i = 0; i != MAX_BAR_STATES; ++i )
	{
		mSizes[i].x = -1;
		mSizes[i].y = -1;

		mBounds[i] = wxRect( -1,-1,-1,-1 );
	}
}

cbDimInfo::cbDimInfo( int dh_x, int dh_y,
					  int dv_x, int dv_y,
					  int f_x,  int f_y,

					  bool isFixed,
					  int horizGap,
					  int vertGap,

				      cbBarDimHandlerBase* pDimHandler
				    )
	: mVertGap  ( vertGap   ),
	  mHorizGap ( horizGap  ),
	  mIsFixed  ( isFixed   ),
	  mpHandler( pDimHandler )
{
	if ( mpHandler )
	{
		// int vtad = *((int*)mpHandler);
		mpHandler->AddRef();
	}

	mSizes[wxCBAR_DOCKED_HORIZONTALLY].x = dh_x;
	mSizes[wxCBAR_DOCKED_HORIZONTALLY].y = dh_y;
	mSizes[wxCBAR_DOCKED_VERTICALLY  ].x = dv_x;
	mSizes[wxCBAR_DOCKED_VERTICALLY  ].y = dv_y;
	mSizes[wxCBAR_FLOATING           ].x = f_x;
	mSizes[wxCBAR_FLOATING           ].y = f_y;

	for( size_t i = 0; i != MAX_BAR_STATES; ++i )
		mBounds[i] = wxRect( -1,-1,-1,-1 );
}	 

cbDimInfo::cbDimInfo( int x, int y,  
                      bool isFixed, int gap, 
                      cbBarDimHandlerBase* pDimHandler)
  : mVertGap  ( gap ),
    mHorizGap ( gap ),
    mIsFixed  ( isFixed ),
    mpHandler( pDimHandler )
{
    if ( mpHandler )
    {
        // int vtad = *((int*)mpHandler);
        mpHandler->AddRef();
    }

    mSizes[wxCBAR_DOCKED_HORIZONTALLY].x = x;
    mSizes[wxCBAR_DOCKED_HORIZONTALLY].y = y;
    mSizes[wxCBAR_DOCKED_VERTICALLY  ].x = x;
    mSizes[wxCBAR_DOCKED_VERTICALLY  ].y = y;
    mSizes[wxCBAR_FLOATING           ].x = x;
    mSizes[wxCBAR_FLOATING           ].y = y;
	
    for( size_t i = 0; i != MAX_BAR_STATES; ++i )
        mBounds[i] = wxRect( -1,-1,-1,-1 );
}

cbDimInfo::~cbDimInfo()
{
	if ( mpHandler ) 
		
		mpHandler->RemoveRef();
}

const cbDimInfo& cbDimInfo::operator=( const cbDimInfo& other )
{
	if ( this == &other ) return *this;

	for( int i = 0; i != MAX_BAR_STATES; ++i )

		mSizes[i] = other.mSizes[i];

	mIsFixed  = other.mIsFixed;
	mpHandler = other.mpHandler;

	mVertGap  = other.mVertGap;
	mHorizGap = other.mHorizGap;

	if ( mpHandler )

		mpHandler->AddRef();

	return *this;
}

/***** Implementation for structure cbCommonPaneProperties *****/

IMPLEMENT_DYNAMIC_CLASS( cbCommonPaneProperties, wxObject )

cbCommonPaneProperties::cbCommonPaneProperties(void)

	: mRealTimeUpdatesOn    ( TRUE  ),
	  mOutOfPaneDragOn      ( TRUE  ),
	  mExactDockPredictionOn( FALSE ),
	  mNonDestructFirctionOn( FALSE ),
	  mShow3DPaneBorderOn   ( TRUE  ),
	  mBarFloatingOn        ( FALSE ),
	  mRowProportionsOn     ( FALSE ),
	  mColProportionsOn     ( TRUE  ),
	  mBarCollapseIconsOn   ( FALSE ),
	  mBarDragHintsOn       ( FALSE ),

	  mMinCBarDim( 16, 16 ),
	  mResizeHandleSize( 4 )
{}

/***** Implementation for class cbRowInfo *****/

IMPLEMENT_DYNAMIC_CLASS( cbRowInfo, wxObject )

cbRowInfo::cbRowInfo(void)

	: mNotFixedBarsCnt( FALSE ),
	  mpNext          ( NULL ),
	  mpPrev          ( NULL ),
	  mpExpandedBar   ( NULL )
{}

cbRowInfo::~cbRowInfo()
{
	// nothing! all bars are removed using global bar
	// list in wxFrameLayout class
}

/***** Implementation for class cbBarInfo *****/

IMPLEMENT_DYNAMIC_CLASS( cbBarInfo, wxObject )

cbBarInfo::cbBarInfo(void)

	: mpRow( NULL ),

	  mpNext( NULL ),
	  mpPrev( NULL )
{}

cbBarInfo::~cbBarInfo()
{
	// nothing
}

/***** Implementation for class cbDockPane *****/

IMPLEMENT_DYNAMIC_CLASS( cbDockPane, wxObject )

// FIXME:: how to eliminate these cut&pasted constructors?

cbDockPane::cbDockPane(void)							 
	: mLeftMargin  ( 1 ),
	  mRightMargin ( 1 ),
	  mTopMargin   ( 1 ),
	  mBottomMargin( 1 ),
	  mPaneWidth ( 32768     ), // fake-up very large pane dims,
	                            // since the real dimensions of the pane may not 
						 	    // be known, while inserting bars initially
	  mPaneHeight( 32768     ),
	  mAlignment ( -1   ),
	  mpLayout   ( 0 ),
	  mpStoredRow( NULL )
{}

cbDockPane::cbDockPane( int alignment, wxFrameLayout* pPanel )
							 
	:  mLeftMargin  ( 1 ),
	  mRightMargin ( 1 ),
	  mTopMargin   ( 1 ),
	  mBottomMargin( 1 ),
	  mPaneWidth ( 32768     ), // fake-up very large pane dims,
	                            // since the real dimensions of the pane may not 
						 	    // be known, while inserting bars initially
	  mPaneHeight( 32768     ),
	  mAlignment ( alignment ),
	  mpLayout   ( pPanel    ),
      mpStoredRow( NULL )	 
{}

cbDockPane::~cbDockPane()
{
	for( size_t i = 0; i != mRows.Count(); ++i )

		delete mRows[i];

	mRowShapeData.DeleteContents( TRUE );
	
	// NOTE:: control bar infromation structures are cleaned-up
	//        in wxFrameLayout's destructor, using global control-bar list
}

void cbDockPane::SetMargins( int top, int bottom, int left, int right )
{
	mTopMargin    = top;
	mBottomMargin = bottom;
	mLeftMargin   = left;
	mRightMargin  = right;
}

/*** helpers of cbDockPane ***/

void cbDockPane::PaintBarDecorations( cbBarInfo* pBar, wxDC& dc )
{
	cbDrawBarDecorEvent evt( pBar, dc, this );

	mpLayout->FirePluginEvent( evt );
}

void cbDockPane::PaintBarHandles( cbBarInfo* pBar, wxDC& dc )
{
	cbDrawBarHandlesEvent evt( pBar, dc, this );

	mpLayout->FirePluginEvent( evt );
}

void cbDockPane::PaintBar( cbBarInfo* pBar, wxDC& dc )
{
	PaintBarDecorations( pBar, dc );
	PaintBarHandles( pBar, dc );
}

void cbDockPane::PaintRowHandles( cbRowInfo* pRow, wxDC& dc )
{
	cbDrawRowHandlesEvent evt( pRow, dc, this );

	mpLayout->FirePluginEvent( evt );

	cbDrawRowDecorEvent evt1( pRow, dc, this );

	mpLayout->FirePluginEvent( evt1 );
}

void cbDockPane::PaintRowBackground ( cbRowInfo* pRow, wxDC& dc )
{
	cbDrawRowBkGroundEvent evt( pRow, dc, this );

	mpLayout->FirePluginEvent( evt );
}

void cbDockPane::PaintRowDecorations( cbRowInfo* pRow, wxDC& dc )
{
	size_t i = 0;

	// decorations first
	for( i = 0; i != pRow->mBars.Count(); ++i )
	
		PaintBarDecorations( pRow->mBars[i], dc );

	// then handles if present
	for( i = 0; i != pRow->mBars.Count(); ++i )

		PaintBarHandles( pRow->mBars[i], dc );
}

void cbDockPane::PaintRow( cbRowInfo* pRow, wxDC& dc )
{
	PaintRowBackground ( pRow, dc );
	PaintRowDecorations( pRow, dc );
	PaintRowHandles    ( pRow, dc );
}

void cbDockPane::PaintPaneBackground( wxDC& dc )
{
	cbDrawPaneBkGroundEvent evt( dc, this );

	mpLayout->FirePluginEvent( evt );
}

void cbDockPane::PaintPaneDecorations( wxDC& dc )
{
	cbDrawPaneDecorEvent evt( dc, this );

	mpLayout->FirePluginEvent( evt );
}

void cbDockPane::PaintPane( wxDC& dc )
{
	PaintPaneBackground( dc );

	size_t i = 0;

	// first decorations
	for( i = 0; i != mRows.Count(); ++i )
	{
		PaintRowBackground( mRows[i], dc );
		PaintRowDecorations( mRows[i], dc );
	}

	// than handles
	for( i = 0; i != mRows.Count(); ++i )
	
		PaintRowHandles( mRows[i], dc );

	// and finally
	PaintPaneDecorations( dc );
}

void cbDockPane::SizeBar( cbBarInfo* pBar )
{
	cbSizeBarWndEvent evt( pBar, this );

	mpLayout->FirePluginEvent( evt );
	return;
}

void cbDockPane::SizeRowObjects( cbRowInfo* pRow )
{
	for( size_t i = 0; i != pRow->mBars.Count(); ++i )

		SizeBar( pRow->mBars[i] );
}

void cbDockPane::SizePaneObjects()
{
	for( size_t i = 0; i != mRows.Count(); ++i )

		SizeRowObjects( mRows[i] );
}

wxDC* cbDockPane::StartDrawInArea( const wxRect& area )
{
	wxDC* pDc = 0;

	cbStartDrawInAreaEvent evt( area, &pDc, this );

	mpLayout->FirePluginEvent( evt );

	return pDc;
}

void cbDockPane::FinishDrawInArea( const wxRect& area )
{
	cbFinishDrawInAreaEvent evt( area, this );

	mpLayout->FirePluginEvent( evt );
}

bool cbDockPane::IsFixedSize( cbBarInfo* pInfo )
{
	return ( pInfo->mDimInfo.mIsFixed );
}

int cbDockPane::GetNotFixedBarsCount( cbRowInfo* pRow )
{
	int cnt = 0;

	for( size_t i = 0; i != pRow->mBars.Count(); ++i )

		if ( !pRow->mBars[i]->IsFixed() )  ++cnt;

	return cnt;
}

void cbDockPane::RemoveBar( cbBarInfo* pBar )
{
	bool needsRestoring = mProps.mNonDestructFirctionOn && 
						  mpStoredRow == pBar->mpRow;

	cbRemoveBarEvent evt( pBar, this );

	mpLayout->FirePluginEvent( evt );

	if ( needsRestoring )
	{
		SetRowShapeData( mpStoredRow, &mRowShapeData );

		mpStoredRow = NULL;
	}
}

void cbDockPane::SyncRowFlags( cbRowInfo* pRow )
{
	// setup mHasOnlyFixedBars flag for the row information
	pRow->mHasOnlyFixedBars = TRUE;

	pRow->mNotFixedBarsCnt = 0;

	for( size_t i = 0; i != pRow->mBars.Count(); ++i )
	{
		cbBarInfo& bar = *pRow->mBars[i];

		bar.mpRow = pRow;

		if ( !bar.IsFixed() )
		{
			pRow->mHasOnlyFixedBars = FALSE;
			++pRow->mNotFixedBarsCnt;
		}
	}
}

void cbDockPane::FrameToPane( int* x, int* y )
{
	*x -= mLeftMargin;
	*y -= mTopMargin;

	if ( mAlignment == FL_ALIGN_TOP ||
		 mAlignment == FL_ALIGN_BOTTOM 
	   )
	{
		*x -= mBoundsInParent.x;
		*y -= mBoundsInParent.y;
	}
	else
	{
		int rx = *x, ry = *y;

		*x = ry - mBoundsInParent.y;

		*y = rx - mBoundsInParent.x;
	}
}

void cbDockPane::PaneToFrame( int* x, int* y )
{
	if ( mAlignment == FL_ALIGN_TOP ||
		 mAlignment == FL_ALIGN_BOTTOM 
	   )
	{
		*x += mBoundsInParent.x;
		*y += mBoundsInParent.y;
	}
	else
	{
		int rx = *x, ry = *y;

		*x = ry + mBoundsInParent.x;

		*y = mBoundsInParent.y + rx;
	}

	*x += mLeftMargin;
	*y += mTopMargin;
}

void cbDockPane::FrameToPane( wxRect* pRect )
{
	wxPoint upperLeft ( pRect->x, pRect->y );
	wxPoint lowerRight( pRect->x + pRect->width,
		                pRect->y + pRect->height );

	FrameToPane( &upperLeft.x,  &upperLeft.y  );
	FrameToPane( &lowerRight.x, &lowerRight.y );

	pRect->x = wxMin(upperLeft.x,lowerRight.x);
	pRect->y = wxMin(upperLeft.y,lowerRight.y);

	pRect->width  = abs( lowerRight.x - upperLeft.x );
	pRect->height = abs( lowerRight.y - upperLeft.y );
}

void cbDockPane::PaneToFrame( wxRect* pRect )
{
	wxPoint upperLeft ( pRect->x, pRect->y );
	wxPoint lowerRight( pRect->x + pRect->width,
		                pRect->y + pRect->height );

	PaneToFrame( &upperLeft.x,  &upperLeft.y  );
	PaneToFrame( &lowerRight.x, &lowerRight.y );

	//wxRect newRect = wxRect( upperLeft, lowerRight );

	pRect->x = wxMin(upperLeft.x,lowerRight.x);
	pRect->y = wxMin(upperLeft.y,lowerRight.y);

	pRect->width  = abs( lowerRight.x - upperLeft.x );
	pRect->height = abs( lowerRight.y - upperLeft.y );
}

int cbDockPane::GetRowAt( int paneY )
{
	if ( paneY < 0 ) return -1;

	int curY = 0;

	size_t i = 0;

	for( ; i != mRows.Count(); ++i )
	{
		int rowHeight = mRows[i]->mRowHeight;

		int third = rowHeight/3;
		
		if ( paneY >= curY && paneY < curY + third ) 
			return i-1;

		if ( paneY >= curY + third && paneY < curY + rowHeight - third ) 
			return i;

		curY += rowHeight;
	}

	return i;
}

int cbDockPane::GetRowAt( int upperY, int lowerY )
{
	/*
	// OLD STUFF::
	int range    = lowerY - upperY;
	int oneThird = range / 3;

	wxNode* pRow = mRows.First();
	int row = 0;
	int curY = 0;

	if ( lowerY <= 0 ) return -1;

	while( pRow )
	{
		int rowHeight = GetRowHeight( (wxList*)pRow->Data() );

		if ( upperY >= curY &&
			 lowerY < curY ) return row;

		if ( upperY <= curY && 
			 lowerY >= curY &&
			 curY - upperY >= oneThird ) return row-1;

		if ( ( upperY <  curY + rowHeight && 
			   lowerY >= curY + rowHeight &&
			   curY + rowHeight - lowerY >= oneThird ) 
		   )
			return row+1;

		if ( lowerY <= curY + rowHeight ) return row;

		++row;
		curY += rowHeight;
		pRow = pRow->Next();
	}
	*/

	int mid = upperY + (lowerY - upperY)/2;

	if ( mid < 0 ) return -1;

	int curY = 0;
	size_t i = 0;

	for( ; i != mRows.Count(); ++i )
	{
		int rowHeight = mRows[i]->mRowHeight;

		if ( mid >= curY && mid < curY + rowHeight ) return i;

		curY += rowHeight;
	}

	return i;
}

int cbDockPane::GetRowY( cbRowInfo* pRow )
{
	int curY = 0;

	for( size_t i = 0; i != mRows.Count(); ++i )
	{
		if ( mRows[i] == pRow ) break;

		curY += mRows[i]->mRowHeight;
	}

	return curY;
}

bool cbDockPane::HasNotFixedRowsAbove( cbRowInfo* pRow )
{
 	while ( pRow->mpPrev )
	{
		pRow = pRow->mpPrev;

		if ( pRow->mHasOnlyFixedBars )

			return TRUE;
	} 

	return FALSE;
}

bool cbDockPane::HasNotFixedRowsBelow( cbRowInfo* pRow )
{
	while( pRow->mpNext )
	{
		pRow = pRow->mpNext;

		if ( pRow->mHasOnlyFixedBars )

			return TRUE;
	}

	return FALSE;
}

bool cbDockPane::HasNotFixedBarsLeft( cbBarInfo* pBar )
{
	while( pBar->mpPrev )
	{
		pBar = pBar->mpPrev;

		if ( pBar->IsFixed() )

			return TRUE;
	}
		
	return FALSE;
}

bool cbDockPane::HasNotFixedBarsRight( cbBarInfo* pBar )
{
	while( pBar->mpNext )
	{
		pBar = pBar->mpNext;

		if ( pBar->IsFixed() )

			return TRUE;
	}
		
	return FALSE;
}

void cbDockPane::CalcLengthRatios( cbRowInfo* pInRow )
{
	int totalWidth = 0;

	size_t i = 0;

	// clac current-maximal-total-length of all maximized bars

	for( i = 0; i != pInRow->mBars.GetCount(); ++i )
	{
		cbBarInfo& bar = *pInRow->mBars[i];

		if ( !bar.IsFixed() )

			totalWidth += bar.mBounds.width;
	}

	// set up persentages of occupied space for each maximized bar

	for( i = 0; i != pInRow->mBars.Count(); ++i )
	{
		cbBarInfo& bar = *pInRow->mBars[i];

		if ( !bar.IsFixed() )

			bar.mLenRatio = double(bar.mBounds.width)/double(totalWidth);
	}
}

void cbDockPane::RecalcRowLayout( cbRowInfo* pRow )
{
	cbLayoutRowEvent evt( pRow, this );
	
	mpLayout->FirePluginEvent( evt );
}

void cbDockPane::ExpandBar( cbBarInfo* pBar )
{
	mpLayout->GetUpdatesManager().OnStartChanges();

	if ( !pBar->mpRow->mpExpandedBar )
	{
		// save ratios only when there arent any bars expanded yet

		cbArrayFloat& ratios = pBar->mpRow->mSavedRatios;

		ratios.Clear();
		ratios.Alloc( pBar->mpRow->mNotFixedBarsCnt );

		cbBarInfo* pCur = pBar->mpRow->mBars[0];

		while( pCur )
		{
			if ( !pCur->IsFixed() )
			{
				ratios.Add( 0.0 );
				ratios[ ratios.GetCount() - 1 ] = pCur->mLenRatio; 
			}

			pCur = pCur->mpNext;
		}
	}

	cbBarInfo* pCur = pBar->mpRow->mBars[0];

	while( pCur )
	{
		pCur->mLenRatio = 0.0; // minimize the rest

		pCur = pCur->mpNext;
	}

	pBar->mLenRatio     = 1.0; // 100%
	pBar->mBounds.width = 0;

	pBar->mpRow->mpExpandedBar = pBar;

	mpLayout->RecalcLayout( FALSE );

	mpLayout->GetUpdatesManager().OnFinishChanges();
	mpLayout->GetUpdatesManager().UpdateNow();
}

void cbDockPane::ContractBar( cbBarInfo* pBar )
{
	mpLayout->GetUpdatesManager().OnStartChanges();

    // FIXME: What's the purpose of this???
    // double ratio = 1.0/ double( pBar->mpRow->mNotFixedBarsCnt );

	// restore ratios which were present before expansion

	cbBarInfo* pCur = pBar->mpRow->mBars[0];

	cbArrayFloat& ratios = pBar->mpRow->mSavedRatios;

	size_t i = 0;

	while( pCur )
	{
		if ( !pCur->IsFixed() )
		{
			pCur->mLenRatio = ratios[i];
			++i;
		}

		pCur = pCur->mpNext;
	}

	ratios.Clear();
	ratios.Shrink();

	pBar->mpRow->mpExpandedBar = NULL;

	mpLayout->RecalcLayout( FALSE );

	mpLayout->GetUpdatesManager().OnFinishChanges();
	mpLayout->GetUpdatesManager().UpdateNow();
}

void cbDockPane::InitLinksForRow( cbRowInfo* pRow )
{
	for( size_t i = 0; i != pRow->mBars.Count(); ++i )
	{
		cbBarInfo& bar = *pRow->mBars[i];

		if ( i == 0 )

			bar.mpPrev = NULL;
		else
			bar.mpPrev = pRow->mBars[i-1];

		if ( i == pRow->mBars.Count() - 1 )

			bar.mpNext = NULL;
		else
			bar.mpNext = pRow->mBars[i+1];
	}
}

void cbDockPane::InitLinksForRows()
{
	for( size_t i = 0; i != mRows.Count(); ++i )
	{
		cbRowInfo& row = *mRows[i];

		if ( i == 0 )

			row.mpPrev = NULL;
		else
			row.mpPrev = mRows[i-1];

		if ( i == mRows.Count() - 1 )

			row.mpNext = NULL;
		else
			row.mpNext = mRows[i+1];
	}
}

void cbDockPane::DoInsertBar( cbBarInfo* pBar, int rowNo )
{
	cbRowInfo* pRow = NULL;

	if ( rowNo == -1 || rowNo >= (int)mRows.Count() )
	{
		pRow = new cbRowInfo();

		if ( rowNo == -1 && mRows.Count() )
		
			mRows.Insert( pRow, 0 ); 
		else
			mRows.Add( pRow );

		InitLinksForRows();
	}
	else
	{
		pRow = mRows[rowNo];

		if ( mProps.mNonDestructFirctionOn == TRUE )
		{
			// store original shape of the row (before the bar is inserted)

			mpStoredRow = pRow;
			
			GetRowShapeData( mpStoredRow, &mRowShapeData );
		}
	}

	if ( pRow->mBars.Count() )

		pRow->mpExpandedBar = NULL;

	cbInsertBarEvent insEvt( pBar, pRow, this );

	mpLayout->FirePluginEvent( insEvt );

	mpLayout->GetUpdatesManager().OnRowWillChange( pRow, this );
}

void cbDockPane::InsertBar( cbBarInfo* pBarInfo, const wxRect& atRect )
{
	wxRect rect = atRect;
	FrameToPane( &rect );

	pBarInfo->mBounds.x      = rect.x;
	pBarInfo->mBounds.width  = rect.width;
	pBarInfo->mBounds.height = rect.height;

	int row = GetRowAt( rect.y, rect.y + rect.height );

	DoInsertBar( pBarInfo, row );
}

void cbDockPane::InsertBar( cbBarInfo* pBar, cbRowInfo* pIntoRow )
{
	cbInsertBarEvent insEvt( pBar, pIntoRow, this );

	mpLayout->FirePluginEvent( insEvt );

	mpLayout->GetUpdatesManager().OnRowWillChange( pIntoRow, this );
}

void cbDockPane::InsertBar( cbBarInfo* pBarInfo )
{
	// set transient properties

	pBarInfo->mpRow           = NULL;
	pBarInfo->mHasLeftHandle  = FALSE;
	pBarInfo->mHasRightHandle = FALSE;
	pBarInfo->mLenRatio       = 0.0;

	// set preferred bar dimensions, according to the state in which
	// the bar is being inserted

	pBarInfo->mBounds.width   = pBarInfo->mDimInfo.mSizes[ pBarInfo->mState ].x;
	pBarInfo->mBounds.height  = pBarInfo->mDimInfo.mSizes[ pBarInfo->mState ].y;

	DoInsertBar( pBarInfo, pBarInfo->mRowNo );
}

void cbDockPane::RemoveRow( cbRowInfo* pRow )
{
	// first, hide all bar-windows in the removed row
	for( size_t i = 0; i != pRow->mBars.Count(); ++i )

		if ( pRow->mBars[i]->mpBarWnd )

			pRow->mBars[i]->mpBarWnd->Show( FALSE );

	mRows.Remove( pRow );

	pRow->mUMgrData.SetDirty(TRUE);
}

void cbDockPane::InsertRow( cbRowInfo* pRow, cbRowInfo* pBeforeRow )
{
	if ( !pBeforeRow )

		mRows.Add( pRow );
	else
		mRows.Insert( pRow, mRows.Index( pBeforeRow ) );

	InitLinksForRows();

	pRow->mUMgrData.SetDirty(TRUE);

	for( size_t i = 0; i != pRow->mBars.Count(); ++i )

			pRow->mBars[i]->mUMgrData.SetDirty( TRUE );

	SyncRowFlags( pRow );
}

void cbDockPane::SetPaneWidth(int width)
{
	if ( IsHorizontal() )
	
		mPaneWidth = width - mLeftMargin - mRightMargin;
	else
		mPaneWidth = width - mTopMargin - mBottomMargin;
}


void cbDockPane::SetBoundsInParent( const wxRect& rect )
{

	mBoundsInParent = rect;

	// set pane dimensions in local coordinates

	if ( IsHorizontal() )
	{
		mPaneWidth  = mBoundsInParent.width  - ( mRightMargin + mLeftMargin   );
		mPaneHeight = mBoundsInParent.height - ( mTopMargin   + mBottomMargin );
	}
	else
	{
		mPaneWidth  = mBoundsInParent.height - ( mTopMargin   + mBottomMargin );
		mPaneHeight = mBoundsInParent.width  - ( mRightMargin + mLeftMargin   );
	}

	// convert bounding rectangles of all pane items into parent frame's coordinates

	wxBarIterator i( mRows );

	wxRect noMarginsRect = mBoundsInParent;

	noMarginsRect.x      += mLeftMargin;
	noMarginsRect.y      += mTopMargin;
	noMarginsRect.width  -= ( mLeftMargin + mRightMargin  );
	noMarginsRect.height -= ( mTopMargin  + mBottomMargin );

	// hide the whole pane, if it's bounds became reverted (i.e. pane vanished)

	if ( mBoundsInParent.width < 0 ||
		 mBoundsInParent.height < 0 )

		 hide_rect( mBoundsInParent );

	if ( noMarginsRect.width < 0 ||
		 noMarginsRect.height < 0 )
	
		hide_rect( noMarginsRect   );

	// calculate mBoundsInParent for each item in the pane

	while( i.Next() )
	{
		cbBarInfo& bar = i.BarInfo();

		cbRowInfo* pRowInfo = bar.mpRow;

		// set up row info, if this is first bar in the row

		if ( pRowInfo && bar.mpPrev == NULL )
		{
			pRowInfo->mBoundsInParent.y      = pRowInfo->mRowY;
			pRowInfo->mBoundsInParent.x      = 0;
			pRowInfo->mBoundsInParent.width  = mPaneWidth;
			pRowInfo->mBoundsInParent.height = pRowInfo->mRowHeight;

			PaneToFrame( &pRowInfo->mBoundsInParent );

			clip_rect_against_rect( pRowInfo->mBoundsInParent, noMarginsRect );
		}

		wxRect bounds = bar.mBounds;

		// exclude dimensions of handles, when calculating
		// bar's bounds in parent (i.e. "visual bounds")

		if ( bar.mHasLeftHandle )
		{
			bounds.x     += mProps.mResizeHandleSize;
			bounds.width -= mProps.mResizeHandleSize;
		}

		if ( bar.mHasRightHandle )
		
			bounds.width -= mProps.mResizeHandleSize;

		PaneToFrame( &bounds );

		clip_rect_against_rect( bounds, noMarginsRect );

		bar.mBoundsInParent = bounds;
	}
}

bool cbDockPane::BarPresent( cbBarInfo* pBar )
{
	wxBarIterator iter( mRows );

	while( iter.Next() )
	
		if ( &iter.BarInfo() == pBar ) return TRUE;

	return FALSE;
}

cbRowInfo* cbDockPane::GetRow( int row )
{
	if ( row >= (int)mRows.Count() ) return NULL;

	return mRows[ row ];
}

int cbDockPane::GetRowIndex( cbRowInfo* pRow )
{
	for( size_t i = 0; i != mRows.Count(); ++i )
	{
		if ( mRows[i] == pRow ) 
			return i;
	}

	int avoidCompilerWarning = 0;
	wxASSERT(avoidCompilerWarning); // DBG:: row should be present

	return 0;
}

int cbDockPane::GetPaneHeight()
{
	// first, recalculate row heights and the Y-positions

	cbLayoutRowsEvent evt( this );
	mpLayout->FirePluginEvent( evt );

	int height = 0;

	if ( IsHorizontal() )
	
		height += mTopMargin  + mBottomMargin;
	else
		height += mLeftMargin + mRightMargin;

	int count = mRows.Count();

	if ( count )
	
		height += mRows[count-1]->mRowY + mRows[count-1]->mRowHeight;

	return height;
}

int cbDockPane::GetAlignment()
{
	return mAlignment;
}

bool cbDockPane::MatchesMask( int paneMask )
{
	int thisMask = 0;

	// FIXME:: use array instead of switch()

	switch (mAlignment)
	{
		case FL_ALIGN_TOP    : thisMask = FL_ALIGN_TOP_PANE;   break;
		case FL_ALIGN_BOTTOM : thisMask = FL_ALIGN_BOTTOM_PANE;break;
		case FL_ALIGN_LEFT   : thisMask = FL_ALIGN_LEFT_PANE;  break;
		case FL_ALIGN_RIGHT  : thisMask = FL_ALIGN_RIGHT_PANE; break;

		default:
			int avoidCompilerWarning = 0;
			wxASSERT(avoidCompilerWarning); // DBG:: bogus alignment type
	}

	return ( thisMask & paneMask ) != 0;
}

void cbDockPane::RecalcLayout()
{
	// first, reposition rows and items vertically

	cbLayoutRowsEvent evt( this );
	mpLayout->FirePluginEvent( evt );

	// then horizontally in each row 

	for( size_t i = 0; i != mRows.Count(); ++i )

		RecalcRowLayout( mRows[i] );
}

int cbDockPane::GetDockingState()
{
	if ( mAlignment == FL_ALIGN_TOP || 
		 mAlignment == FL_ALIGN_BOTTOM )
	{
		return wxCBAR_DOCKED_HORIZONTALLY;
	}
	else
		return wxCBAR_DOCKED_VERTICALLY;
}

inline bool cbDockPane::HasPoint( const wxPoint& pos, int x, int y, 
								  int width, int height )
{
	return ( pos.x >= x && 
			 pos.y >= y &&
		     pos.x < x + width &&
			 pos.y < y + height   );
}

int cbDockPane::HitTestPaneItems( const wxPoint& pos,
								  cbRowInfo**    ppRow,
								  cbBarInfo**    ppBar
							    )
{
	(*ppRow) = NULL;
	(*ppBar) = NULL;

	for( size_t i = 0; i != mRows.Count(); ++i )
	{
		cbRowInfo& row = *mRows[i];

		*ppRow = &row;

		// hit-test handles of the row, if present

		if ( row.mHasUpperHandle )
		{
			if ( HasPoint( pos, 0, row.mRowY,
					       row.mRowWidth, mProps.mResizeHandleSize ) )

				return CB_UPPER_ROW_HANDLE_HITTED;
		}
		else
		if ( row.mHasLowerHandle )
		{
			if ( HasPoint( pos, 0, row.mRowY + row.mRowHeight - mProps.mResizeHandleSize, 
				           row.mRowWidth, mProps.mResizeHandleSize ) )

					return CB_LOWER_ROW_HANDLE_HITTED;
		}

		// hit-test bar handles and bar content

		for( size_t k = 0; k != row.mBars.Count(); ++k )
		{
			cbBarInfo& bar    = *row.mBars[k];
			wxRect&    bounds = bar.mBounds;

			*ppBar = &bar;

			if ( bar.mHasLeftHandle )
			{
				if ( HasPoint( pos, bounds.x, bounds.y,
					           mProps.mResizeHandleSize, bounds.height ) )

					return CB_LEFT_BAR_HANDLE_HITTED;
			}
			else
			if ( bar.mHasRightHandle )
			{
				if ( HasPoint( pos, bounds.x + bounds.width - mProps.mResizeHandleSize, bounds.y,
				               mProps.mResizeHandleSize, bounds.height ) )
				
					return CB_RIGHT_BAR_HANDLE_HITTED;
			}

			if ( HasPoint( pos, bounds.x, bounds.y, bounds.width, bounds.height ) )
			
				return CB_BAR_CONTENT_HITTED;

		} // hit-test next bar

	} // next row

	return CB_NO_ITEMS_HITTED;
}

void cbDockPane::GetBarResizeRange( cbBarInfo* pBar, int* from, int *till,
								    bool forLeftHandle )
{
	cbBarInfo* pGivenBar = pBar;

	int notFree = 0;

	// calc unavailable space from the left

	while( pBar->mpPrev )
	{
		pBar = pBar->mpPrev;

		if ( !pBar->IsFixed() ) notFree += mProps.mMinCBarDim.x;
						        else notFree += pBar->mBounds.width;
	}

	*from = notFree;

	pBar = pGivenBar;

	notFree = 0;

	// calc unavailable space from the right

	while( pBar->mpNext )
	{
		pBar = pBar->mpNext;

		if ( pBar->mBounds.x >= mPaneWidth ) break;

		// treat not-fixed bars as minimized

		if ( !pBar->IsFixed() ) 
			
			notFree += mProps.mMinCBarDim.x;
		else 
		{
			if ( pBar->mBounds.x + pBar->mBounds.width >= mPaneWidth )
			{
				notFree += mPaneWidth - pBar->mBounds.x;
				break;
			}
			else
				notFree += pBar->mBounds.width;
		}

	} 

	*till = mPaneWidth - notFree;

	// do not let resizing totally deform the bar itself

	if ( forLeftHandle )
	
		(*till) -= mProps.mMinCBarDim.x;
	else
	
		(*from) += mProps.mMinCBarDim.x;
}

int cbDockPane::GetMinimalRowHeight( cbRowInfo* pRow )
{
	int height = mProps.mMinCBarDim.y;

	for( size_t i = 0; i != pRow->mBars.Count(); ++i )
		
		if ( pRow->mBars[i]->IsFixed() )

			height = wxMax( height, pRow->mBars[i]->mBounds.height );

	if ( pRow->mHasUpperHandle )

		height += mProps.mResizeHandleSize;

	if ( pRow->mHasLowerHandle )

		height += mProps.mResizeHandleSize;
	
	return height;
}

void cbDockPane::SetRowHeight( cbRowInfo* pRow, int newHeight )
{
	if ( pRow->mHasUpperHandle )

		newHeight -= mProps.mResizeHandleSize;

	if ( pRow->mHasLowerHandle )

		newHeight -= mProps.mResizeHandleSize;

	for( size_t i = 0; i != pRow->mBars.Count(); ++i )

		if ( !pRow->mBars[i]->IsFixed() )
		
			pRow->mBars[i]->mBounds.height = newHeight;
}

void cbDockPane::GetRowResizeRange( cbRowInfo* pRow, int* from, int* till,
								    bool forUpperHandle )
{
	cbRowInfo* pGivenRow = pRow;

	// calc unavailable space from above

	int notFree = 0;

	while( pRow->mpPrev )
	{
		pRow = pRow->mpPrev;

		notFree += GetMinimalRowHeight( pRow );

	};

	*from = notFree;	

	// allow accupy the client window space by resizing pane rows
	if ( mAlignment == FL_ALIGN_BOTTOM )

		*from -= mpLayout->GetClientHeight();
	else
	if ( mAlignment == FL_ALIGN_RIGHT )

		*from -= mpLayout->GetClientWidth();

	// calc unavailable space from below

	pRow = pGivenRow;

	notFree = 0;

	while( pRow->mpNext )
	{
		pRow = pRow->mpNext;

		notFree += GetMinimalRowHeight( pRow );

	}

	*till = mPaneHeight - notFree;	

	// allow adjustinig pane space vs. client window space by resizing pane row heights

	if ( mAlignment == FL_ALIGN_TOP )

		*till += mpLayout->GetClientHeight();
	else
	if ( mAlignment == FL_ALIGN_LEFT )

		*till += mpLayout->GetClientWidth();

	// do not let the resizing of the row totally squeeze the row itself

	cbRowInfo& row = *pGivenRow;

	if ( forUpperHandle )
	{	
		*till = row.mRowY + row.mRowHeight - GetMinimalRowHeight( pGivenRow );

		if ( row.mHasUpperHandle )

			*till -= mProps.mResizeHandleSize;
	}
	else
	{
		*from += GetMinimalRowHeight( pGivenRow );

		if ( row.mHasLowerHandle )

			*from -= mProps.mResizeHandleSize;
	}
}

void cbDockPane::ResizeRow( cbRowInfo* pRow, int ofs, 
							bool forUpperHandle )
{
	cbResizeRowEvent evt( pRow, ofs, forUpperHandle, this );

	mpLayout->FirePluginEvent( evt );
}

void cbDockPane::ResizeBar( cbBarInfo* pBar, int ofs, 
						    bool forLeftHandle )
{
	pBar->mpRow->mpExpandedBar = NULL;

	mpLayout->GetUpdatesManager().OnStartChanges();

	wxRect&  bounds	= pBar->mBounds;

	if ( forLeftHandle )
	{
		// do not allow bar width become less then minimal
		if ( bounds.x + ofs > bounds.x + bounds.width - mProps.mMinCBarDim.x )
		{
			bounds.width = mProps.mMinCBarDim.x;
			bounds.x += ofs;
		}
		else
		{
			bounds.x     += ofs;
			bounds.width -= ofs;
		}
	}
	else
	{
		// move bar left if necessary		
		if ( bounds.width + ofs < mProps.mMinCBarDim.x )
		{
			bounds.x     = bounds.x + bounds.width + ofs - mProps.mMinCBarDim.x;
			bounds.width = mProps.mMinCBarDim.x;
		}
		else
			// resize right border only
			bounds.width += ofs;
	}


	cbRowInfo* pToRow = pBar->mpRow;

	this->RemoveBar( pBar );

	InsertBar( pBar, pToRow );

	mpLayout->RecalcLayout(FALSE);

	mpLayout->GetUpdatesManager().OnFinishChanges();
	mpLayout->GetUpdatesManager().UpdateNow();
}


/*** row/bar resizing related methods ***/

void cbDockPane::DrawVertHandle( wxDC& dc, int x, int y, int height )
{
	int lower = y + height;

	dc.SetPen( mpLayout->mLightPen );
	dc.DrawLine( x,y, x, lower );

	dc.SetPen( mpLayout->mGrayPen );
	for( int i = 0; i != mProps.mResizeHandleSize-1; ++i )
	{
		++x;
		dc.DrawLine( x,y, x, lower );
	}

	dc.SetPen( mpLayout->mDarkPen );
	++x;
	dc.DrawLine( x,y, x, lower );

	dc.SetPen( mpLayout->mBlackPen );
	++x;
	dc.DrawLine( x,y, x, lower );
}

void cbDockPane::DrawHorizHandle( wxDC& dc, int x, int y, int width  )
{
	int right = x + width;

	dc.SetPen( mpLayout->mLightPen );
	dc.DrawLine( x,y, right, y );

	dc.SetPen( mpLayout->mGrayPen );

	for( int i = 0; i != mProps.mResizeHandleSize-1; ++i )
	{
		++y;
		dc.DrawLine( x,y, right, y );
	}

	dc.SetPen( mpLayout->mDarkPen );
	dc.DrawLine( x,y, right, ++y );

	dc.SetPen( mpLayout->mBlackPen );
	dc.DrawLine( x,y, right, ++y );
}

cbBarInfo* cbDockPane::GetBarInfoByWindow( wxWindow* pBarWnd )
{
	wxBarIterator i( mRows );

	while( i.Next() )
	
		if ( i.BarInfo().mpBarWnd == pBarWnd )

			return &i.BarInfo();

	return NULL;
}

void cbDockPane::GetRowShapeData( cbRowInfo* pRow, wxList* pLst )
{
	pLst->DeleteContents( TRUE );
	pLst->Clear();

	for( size_t i = 0; i != pRow->mBars.Count(); ++i )
	{
		cbBarInfo& bar = *pRow->mBars[i];

		cbBarShapeData* pData = new cbBarShapeData();

		pLst->Append( (wxObject*)pData );

		pData->mBounds   = bar.mBounds;
		pData->mLenRatio = bar.mLenRatio;
	}
}

void cbDockPane::SetRowShapeData( cbRowInfo* pRow, wxList* pLst )
{
	if ( pLst->First() == NULL ) return;

	wxNode* pData = pLst->First();

	for( size_t i = 0; i != pRow->mBars.Count(); ++i )
	{
		wxASSERT( pData ); // DBG::

		cbBarInfo& bar = *pRow->mBars[i];;

		cbBarShapeData& data = *((cbBarShapeData*)pData->Data());

		bar.mBounds   = data.mBounds;
		bar.mLenRatio = data.mLenRatio;

		pData = pData->Next();
	}
}

/***** Implementation for class cbUpdatesManagerBase *****/

IMPLEMENT_ABSTRACT_CLASS( cbUpdatesManagerBase, wxObject )

/***** Implementation for class cbPluginBase *****/

IMPLEMENT_ABSTRACT_CLASS( cbPluginBase, wxEvtHandler )

cbPluginBase::~cbPluginBase()
{
	// nothing
}

bool cbPluginBase::ProcessEvent(wxEvent& event)
{
	if ( mPaneMask == wxALL_PANES ) 

		return wxEvtHandler::ProcessEvent( event );

	// extract mask info. from received event

	cbPluginEvent& evt = *( (cbPluginEvent*)&event );

	if ( evt.mpPane == 0 &&
		 mPaneMask  == wxALL_PANES )

		 return wxEvtHandler::ProcessEvent( event );

	int mask = 0;

	switch ( evt.mpPane->mAlignment )
	{
		case FL_ALIGN_TOP    : mask = FL_ALIGN_TOP_PANE;   break;
		case FL_ALIGN_BOTTOM : mask = FL_ALIGN_BOTTOM_PANE;break;
		case FL_ALIGN_LEFT   : mask = FL_ALIGN_LEFT_PANE;  break;
		case FL_ALIGN_RIGHT  : mask = FL_ALIGN_RIGHT_PANE; break;
	}

	// if event's pane maks matches the plugin's mask

	if ( mPaneMask & mask ) 

		return wxEvtHandler::ProcessEvent( event );

	// otherwise pass to the next handler if present

	if ( GetNextHandler() && GetNextHandler()->ProcessEvent( event ) )

		return TRUE;
	else
		return FALSE;
}