/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2008 Jean-Pierre Charras, jaen-pierre.charras@gipsa-lab.inpg.com
 * Copyright (C) 2011 Wayne Stambaugh <stambaughw@verizon.net>
 * Copyright (C) 1992-2011 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */

/**
 * @file sch_text.h
 * @brief Implementation of the label properties dialog.
 */

#include <fctsys.h>
#include <wx/valgen.h>
#include <wxEeschemaStruct.h>
#include <base_units.h>

#include <class_drawpanel.h>
#include <general.h>
#include <drawtxt.h>
#include <confirm.h>
#include <sch_text.h>

#include <dialog_edit_label_base.h>

class SCH_EDIT_FRAME;
class SCH_TEXT;


class DIALOG_LABEL_EDITOR : public DIALOG_LABEL_EDITOR_BASE
{
public:
    DIALOG_LABEL_EDITOR( SCH_EDIT_FRAME* parent, SCH_TEXT* aTextItem );

private:
    void InitDialog( );
    virtual void OnEnterKey( wxCommandEvent& aEvent );
    virtual void OnOkClick( wxCommandEvent& aEvent );
    virtual void OnCancelClick( wxCommandEvent& aEvent );
    void TextPropertiesAccept( wxCommandEvent& aEvent );

    SCH_EDIT_FRAME* m_Parent;
    SCH_TEXT*       m_CurrentText;
    wxTextCtrl*     m_textLabel;
};



/* Edit the properties of the text (Label, Global label, graphic text).. )
 *  pointed by "aTextStruct"
 */
void SCH_EDIT_FRAME::EditSchematicText( SCH_TEXT* aTextItem )
{
    if( aTextItem == NULL )
        return;

    DIALOG_LABEL_EDITOR dialog( this, aTextItem );

    dialog.ShowModal();
}


DIALOG_LABEL_EDITOR::DIALOG_LABEL_EDITOR( SCH_EDIT_FRAME* aParent, SCH_TEXT* aTextItem ) :
    DIALOG_LABEL_EDITOR_BASE( aParent )
{
    m_Parent = aParent;
    m_CurrentText = aTextItem;
    InitDialog();

    GetSizer()->SetSizeHints( this );
    Layout();
    Fit();
    SetMinSize( GetBestSize() );

    Centre();
}


void DIALOG_LABEL_EDITOR::InitDialog()
{
    wxString msg;
    bool multiLine = false;

    if( m_CurrentText->IsMultilineAllowed() )
    {
        m_textLabel = m_textLabelMultiLine;
        m_textLabelSingleLine->Show( false );
        multiLine = true;
    }
    else
    {
        m_textLabel = m_textLabelSingleLine;
        m_textLabelMultiLine->Show( false );
        wxTextValidator* validator = (wxTextValidator*) m_textLabel->GetValidator();
        wxArrayString excludes;

        // Add invalid label characters to this list.
        excludes.Add( wxT( " " ) );
        validator->SetExcludes( excludes );
    }

    m_textLabel->SetValue( m_CurrentText->GetText() );
    m_textLabel->SetFocus();

    switch( m_CurrentText->Type() )
    {
    case SCH_GLOBAL_LABEL_T:
        SetTitle( _( "Global Label Properties" ) );
        break;

    case SCH_HIERARCHICAL_LABEL_T:
        SetTitle( _( "Hierarchical Label Properties" ) );
        break;

    case SCH_LABEL_T:
        SetTitle( _( "Label Properties" ) );
        break;

    case SCH_SHEET_PIN_T:
        SetTitle( _( "Hierarchical Sheet Pin Properties." ) );
        break;

    default:
        SetTitle( _( "Text Properties" ) );
        m_textLabel->Disconnect( wxEVT_COMMAND_TEXT_ENTER,
                                 wxCommandEventHandler ( DIALOG_LABEL_EDITOR::OnEnterKey ),
                                 NULL, this );
        break;
    }

    const int MINTEXTWIDTH = 40;    // M's are big characters, a few establish a lot of width

    int max_len = 0;

    if ( !multiLine )
    {
        max_len =m_CurrentText->GetText().Length();
    }
    else
    {
        // calculate the length of the biggest line
        // we cannot use the length of the entire text that has no meaning
        int curr_len = MINTEXTWIDTH;
        int imax = m_CurrentText->GetText().Length();

        for( int count = 0; count < imax; count++ )
        {
            if( m_CurrentText->GetText()[count] == '\n' ||
                m_CurrentText->GetText()[count] == '\r' ) // new line
            {
                curr_len = 0;
            }
            else
            {
                curr_len++;

                if ( max_len < curr_len )
                    max_len = curr_len;
            }
        }
    }

    if( max_len < MINTEXTWIDTH )
        max_len = MINTEXTWIDTH;

    wxString textWidth;
    textWidth.Append( 'M', MINTEXTWIDTH );
    EnsureTextCtrlWidth( m_textLabel, &textWidth );

    // Set validators
    m_TextOrient->SetSelection( m_CurrentText->GetOrientation() );
    m_TextShape->SetSelection( m_CurrentText->GetShape() );

    int style = 0;

    if( m_CurrentText->IsItalic() )
        style = 1;

    if( m_CurrentText->IsBold() )
        style += 2;

    m_TextStyle->SetSelection( style );

    wxString units = ReturnUnitSymbol( g_UserUnit, wxT( "(%s)" ) );
    msg.Printf( _( "H%s x W%s" ), GetChars( units ), GetChars( units ) );
    m_staticSizeUnits->SetLabel( msg );

    msg = ReturnStringFromValue( g_UserUnit, m_CurrentText->GetSize().x );
    m_TextSize->SetValue( msg );

    if( m_CurrentText->Type() != SCH_GLOBAL_LABEL_T
     && m_CurrentText->Type() != SCH_HIERARCHICAL_LABEL_T )
    {
        m_TextShape->Show( false );
    }

    m_sdbSizer1OK->SetDefault();
}


/*!
 * wxTE_PROCESS_ENTER  event handler for m_textLabel
 */

void DIALOG_LABEL_EDITOR::OnEnterKey( wxCommandEvent& aEvent )
{
    TextPropertiesAccept( aEvent );
}


/*!
 * wxEVT_COMMAND_BUTTON_CLICKED event handler for wxID_OK
 */

void DIALOG_LABEL_EDITOR::OnOkClick( wxCommandEvent& aEvent )
{
    TextPropertiesAccept( aEvent );
}


/*!
 * wxEVT_COMMAND_BUTTON_CLICKED event handler for wxID_CANCEL
 */

void DIALOG_LABEL_EDITOR::OnCancelClick( wxCommandEvent& aEvent )
{
    m_Parent->GetCanvas()->MoveCursorToCrossHair();
    EndModal( wxID_CANCEL );
}


void DIALOG_LABEL_EDITOR::TextPropertiesAccept( wxCommandEvent& aEvent )
{
    wxString text;
    int      value;

    /* save old text in undo list if not already in edit */
    /* or the label to be edited is part of a block */
    if( m_CurrentText->GetFlags() == 0 ||
        m_Parent->GetScreen()->m_BlockLocate.GetState() != STATE_NO_BLOCK )
        m_Parent->SaveCopyInUndoList( m_CurrentText, UR_CHANGED );

    m_Parent->GetCanvas()->RefreshDrawingRect( m_CurrentText->GetBoundingBox() );

    text = m_textLabel->GetValue();

    if( !text.IsEmpty() )
        m_CurrentText->SetText( text );
    else if( !m_CurrentText->IsNew() )
    {
        DisplayError( this, _( "Empty Text!" ) );
        return;
    }

    m_CurrentText->SetOrientation( m_TextOrient->GetSelection() );
    text  = m_TextSize->GetValue();
    value = ReturnValueFromString( g_UserUnit, text );
    m_CurrentText->SetSize( wxSize( value, value ) );

    if( m_TextShape )
        m_CurrentText->SetShape( m_TextShape->GetSelection() );

    int style = m_TextStyle->GetSelection();

    m_CurrentText->SetItalic( ( style & 1 ) );

    if( ( style & 2 ) )
    {
        m_CurrentText->SetBold( true );
        m_CurrentText->SetThickness( GetPenSizeForBold( m_CurrentText->GetSize().x ) );
    }
    else
    {
        m_CurrentText->SetBold( false );
        m_CurrentText->SetThickness( 0 );
    }

    m_Parent->OnModify();

    /* Make the text size as new default size if it is a new text */
    if( m_CurrentText->IsNew() )
        m_Parent->SetDefaultLabelSize( m_CurrentText->GetSize().x );

    m_Parent->GetCanvas()->RefreshDrawingRect( m_CurrentText->GetBoundingBox() );
    m_Parent->GetCanvas()->MoveCursorToCrossHair();
    EndModal( wxID_OK );
}