/*******************************/
/* Dialog frame to swap layers */
/*******************************/

/* Fichier swap_layers */

#include "fctsys.h"
#include "common.h"
#include "pcbnew.h"

#include "protos.h"

/* Variables locales */
static int New_Layer[NB_LAYERS];

enum swap_layer_id {
    ID_SWAP_LAYER_BUTTON_SELECT = 1800,
    ID_SWAP_LAYER_DESELECT,
    ID_SWAP_LAYER_SELECT
};


/***********************************************/
/* classe pour la frame de selection de layers */
/***********************************************/

class WinEDA_SwapLayerFrame : public wxDialog
{
private:
    WinEDA_BasePcbFrame* m_Parent;
    wxRadioBox*          m_LayerList;

public:

    // Constructor and destructor
    WinEDA_SwapLayerFrame( WinEDA_BasePcbFrame * parent );
    ~WinEDA_SwapLayerFrame() { };

private:
    void    Sel_Layer( wxCommandEvent& event );
    void    OnOkClick( wxCommandEvent& event );
    void    OnCancelClick( wxCommandEvent& event );

    DECLARE_EVENT_TABLE()
};

/* Table des evenements pour WinEDA_SwapLayerFrame */
BEGIN_EVENT_TABLE( WinEDA_SwapLayerFrame, wxDialog )
EVT_BUTTON( wxID_OK, WinEDA_SwapLayerFrame::OnOkClick )
EVT_BUTTON( wxID_CANCEL, WinEDA_SwapLayerFrame::OnCancelClick )
EVT_BUTTON( ID_SWAP_LAYER_DESELECT, WinEDA_SwapLayerFrame::Sel_Layer )
EVT_BUTTON( ID_SWAP_LAYER_BUTTON_SELECT, WinEDA_SwapLayerFrame::Sel_Layer )
EVT_RADIOBOX( ID_SWAP_LAYER_SELECT, WinEDA_SwapLayerFrame::Sel_Layer )
END_EVENT_TABLE()


/*************************************************************************/
WinEDA_SwapLayerFrame::WinEDA_SwapLayerFrame( WinEDA_BasePcbFrame* parent ) :
    wxDialog( parent, -1, _( "Swap Layers:" ), wxPoint( -1, -1 ),
              wxSize( 470, 450 ), DIALOG_STYLE )
/*************************************************************************/
{
#define START_Y 15
    wxButton* Button;
    int       ii;
    wxPoint   pos;
    wxString  g_Layer_Name_Pair[NB_LAYERS];
    wxSize    winsize;

    m_Parent = parent;
    SetFont( *g_DialogFont );

    for( ii = 0; ii < NB_LAYERS; ii++ )
    {
        g_Layer_Name_Pair[ii] = ReturnPcbLayerName( ii ) + wxT( " -> " ) + _( "No Change" );
    }

    pos.x = 5;
    pos.y = START_Y;
    m_LayerList = new wxRadioBox( this, ID_SWAP_LAYER_SELECT, _( "Layers" ),
                                  pos, wxSize( -1, -1 ),
                                  NB_LAYERS, g_Layer_Name_Pair, 16, wxRA_SPECIFY_ROWS );

    winsize.y = m_LayerList->GetRect().GetBottom();

    pos.x = m_LayerList->GetRect().GetRight() + 12;

    Button = new wxButton(this, ID_SWAP_LAYER_BUTTON_SELECT, _("Select..."), pos );
    Button->SetForegroundColour(wxColour(0,100,100));

    pos.y += Button->GetSize().y + 10;

    Button = new wxButton(this, ID_SWAP_LAYER_DESELECT, _("Deselect"), pos );
    Button->SetForegroundColour(wxColour(0,100,0));

    pos.y = winsize.y - 2 * Button->GetSize().y - 10;

    Button = new wxButton(this, wxID_OK, _("OK"), pos );
    Button->SetForegroundColour(*wxRED);

    pos.y += Button->GetSize().y + 10;

    Button = new wxButton(this, wxID_CANCEL, _("Cancel"), pos );
    Button->SetForegroundColour(*wxBLUE);

    winsize.x = MAX( winsize.x, Button->GetRect().GetRight() );
    winsize.y = MAX( winsize.y, Button->GetRect().GetBottom() );
    winsize.x += 10;
    winsize.y += 10;
    SetClientSize( winsize );
}


/***************************************************************/
void WinEDA_SwapLayerFrame::Sel_Layer( wxCommandEvent& event )
/***************************************************************/
{
    int ii, jj;

    ii = m_LayerList->GetSelection();

    switch( event.GetId() )
    {
    case ID_SWAP_LAYER_DESELECT:
        if( New_Layer[ii] != NB_LAYERS )
        {
            New_Layer[ii] = NB_LAYERS;
            m_LayerList->SetString( ii, ReturnPcbLayerName( ii )
                                   + wxT( " -> " ) + _( "No Change" ) );
        }
        break;

    case ID_SWAP_LAYER_BUTTON_SELECT:
    case ID_SWAP_LAYER_SELECT:
        jj = New_Layer[ii];
        if( (jj < 0) || (jj > NB_LAYERS) )
            jj = NB_LAYERS; // (Defaults to "No Change".)
        jj = m_Parent->SelectLayer( jj, -1, -1, true );

        if( (jj < 0) || (jj > NB_LAYERS) )
            return;

        // No change if the selected layer matches the layer being edited.
        // (Hence the only way to restore a layer to the "No Change"
        // state is by specifically deselecting it; any attempt
        // to select the same layer (instead) will be ignored.)
        if( jj == ii )
        {
            wxString msg;
            msg = _( "Deselect this layer to restore its No Change state" );
            DisplayInfo( this, msg );
            return;
        }

        if( jj != New_Layer[ii] )
        {
            New_Layer[ii] = jj;
            if( jj == NB_LAYERS )
                m_LayerList->SetString( ii,
                                        ReturnPcbLayerName( ii )
                                      + wxT( " -> " )
                                      + _( "No Change" ) );
            else
                m_LayerList->SetString( ii,
                                        ReturnPcbLayerName( ii )
                                      + wxT( " -> " )
                                      + ReturnPcbLayerName( jj ) );
        }
        break;
    }
}


/*********************************************************/
void WinEDA_SwapLayerFrame::OnCancelClick( wxCommandEvent& event )
/*********************************************************/
{
    EndModal( -1 );
}


/*********************************************************/
void WinEDA_SwapLayerFrame::OnOkClick( wxCommandEvent& event )
/*********************************************************/
{
    EndModal( 1 );
}


/********************************************************/
void WinEDA_PcbFrame::Swap_Layers( wxCommandEvent& event )
/********************************************************/
/* Swap layers */
{
    int             ii, jj;
    TRACK*          pt_segm;
    DRAWSEGMENT*    pt_drawsegm;
    EDA_BaseStruct* PtStruct;


    /* Init default values */
    for( ii = 0; ii < NB_LAYERS; ii++ )
        New_Layer[ii] = NB_LAYERS;

    WinEDA_SwapLayerFrame* frame = new WinEDA_SwapLayerFrame( this );

    ii = frame->ShowModal();
    frame->Destroy();

    if( ii != 1 )
        return; // (Cancelled dialog box returns -1 instead)

    /* Modifications des pistes */
    pt_segm = (TRACK*) m_Pcb->m_Track;
    for( ; pt_segm != NULL; pt_segm = (TRACK*) pt_segm->Pnext )
    {
        m_CurrentScreen->SetModify();
        if( pt_segm->Type() == TYPEVIA )
        {
            SEGVIA* Via = (SEGVIA*) pt_segm;
            if( Via->Shape() == VIA_THROUGH )
                continue;
            int     top_layer, bottom_layer;
            Via->ReturnLayerPair( &top_layer, &bottom_layer );
            if( New_Layer[bottom_layer] >= 0 )
                bottom_layer = New_Layer[bottom_layer];
            if( New_Layer[top_layer] >= 0 )
                top_layer = New_Layer[top_layer];
            Via->SetLayerPair( top_layer, bottom_layer );
        }
        else
        {
            jj = pt_segm->GetLayer();
            if( New_Layer[jj] >= 0 )
                pt_segm->SetLayer( New_Layer[jj] );
        }
    }

    /* Modifications des zones */
    pt_segm = (TRACK*) m_Pcb->m_Zone;
    for( ; pt_segm != NULL; pt_segm = (TRACK*) pt_segm->Pnext )
    {
        m_CurrentScreen->SetModify();
        jj = pt_segm->GetLayer();
        if( New_Layer[jj] >= 0 )
            pt_segm->SetLayer( New_Layer[jj] );
    }

    /* Modifications des autres segments */
    PtStruct = m_Pcb->m_Drawings;
    for( ; PtStruct != NULL; PtStruct = PtStruct->Pnext )
    {
        if( PtStruct->Type() == TYPEDRAWSEGMENT )
        {
            m_CurrentScreen->SetModify();
            pt_drawsegm = (DRAWSEGMENT*) PtStruct;
            jj = pt_drawsegm->GetLayer();
            if( New_Layer[jj] >= 0 )
                pt_drawsegm->SetLayer( New_Layer[jj] );
        }
    }

    DrawPanel->Refresh( TRUE );
}