NCMultiSelectionBox.cc

/*
  Copyright (C) 2000-2012 Novell, Inc
  This library is free software; you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License as
  published by the Free Software Foundation; either version 2.1 of the
  License, or (at your option) version 3.0 of the License. This library
  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 Lesser General Public
  License for more details. You should have received a copy of the GNU
  Lesser General Public License along with this library; if not, write
  to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
  Floor, Boston, MA 02110-1301 USA
*/
 
 
/*-/
 
   File:       NCMultiSelectionBox.cc
 
   Author:     Michael Andres <ma@suse.de>
 
/-*/
 
#define  YUILogComponent "ncurses"
#include <yui/YUILog.h>
#include "NCMultiSelectionBox.h"
 
 
NCMultiSelectionBox::NCMultiSelectionBox( YWidget * parent,
                                          const std::string & nlabel )
        : YMultiSelectionBox( parent, nlabel )
        , NCPadWidget( parent )
{
    // yuiDebug() << std::endl;
    InitPad();
    setLabel( nlabel );
}
 
 
NCMultiSelectionBox::~NCMultiSelectionBox()
{
    // yuiDebug() << std::endl;
}
 
 
int NCMultiSelectionBox::preferredWidth()
{
    wsze sze = wGetDefsze();
    return sze.W > (int) ( labelWidth() + 2 ) ? sze.W : ( labelWidth() + 2 );
}
 
 
int NCMultiSelectionBox::preferredHeight()
{
    return wGetDefsze().H;
}
 
 
void NCMultiSelectionBox::setEnabled( bool do_bv )
{
    NCWidget::setEnabled( do_bv );
    YMultiSelectionBox::setEnabled( do_bv );
}
 
 
void NCMultiSelectionBox::setSize( int newwidth, int newheight )
{
    wRelocate( wpos( 0 ), wsze( newheight, newwidth ) );
}
 
 
YItem * NCMultiSelectionBox::currentItem()
{
    if ( !myPad()->Lines() )
        return 0;
 
    int index = myPad()->CurPos().L;
 
    return itemAt( index );
}
 
 
void NCMultiSelectionBox::setCurrentItem( YItem * item )
{
    if ( item )
        myPad()->ScrlLine( item->index() );
}
 
 
void NCMultiSelectionBox::addItem( YItem * item )
{
    std::vector<NCTableCol*> cells( 2U, 0 );
 
    if ( item )
    {
        item->setIndex( itemsCount() );
        YMultiSelectionBox::addItem( item );
        cells[0] = new NCTableTag( item, item->selected() );
 
        // Do not set style to NCTableCol::PLAIN here, otherwise the current
        // item will not be highlighted if the cursor is not over the widget
 
        cells[1] = new NCTableCol( item->label() );
        myPad()->Append( cells, item->index() );
        DrawPad();
    }
}
 
 
/**
 * Return pointer to current line tag
 * (holds state and yitem pointer)
 **/
NCTableTag * NCMultiSelectionBox::tagCell( int index )
{
    NCTableLine * cl = myPad()->ModifyLine( index );
 
    if ( !cl )
        return 0;
 
    return static_cast<NCTableTag *>( cl->GetCol( 0 ) );
}
 
 
const NCTableTag * NCMultiSelectionBox::tagCell( int index ) const
{
    const NCTableLine * cl = myPad()->GetLine( index );
 
    if ( !cl )
        return 0;
 
    return static_cast<const NCTableTag *>( cl->GetCol( 0 ) );
}
 
 
void NCMultiSelectionBox::deleteAllItems()
{
    YMultiSelectionBox::deleteAllItems();
    myPad()->ClearTable();
    DrawPad();
}
 
 
bool NCMultiSelectionBox::isItemSelected( YItem *item )
{
    if ( item )
        return item->selected();
    else
        return false;
}
 
 
void NCMultiSelectionBox::selectItem( YItem *yitem, bool selected )
{
    if ( yitem )
    {
        YMultiSelectionBox::selectItem( yitem, selected );
 
        // retrieve pointer to the line tag associated with this item
        NCTableTag * tag = (NCTableTag *) yitem->data();
        YUI_CHECK_PTR( tag );
 
        tag->SetSelected( selected );
 
        DrawPad();
    }
}
 
 
void NCMultiSelectionBox::deselectAllItems()
{
    YMultiSelectionBox::deselectAllItems();
 
    for ( unsigned i = 0; i < getNumLines(); i++ )
    {
        NCTableTag *t = tagCell( i );
        YUI_CHECK_PTR( t );
 
        t->SetSelected( false );
    }
 
    DrawPad();
}
 
 
 
/**
 * Toggle item from selected -> deselected and vice versa
 **/
void NCMultiSelectionBox::toggleCurrentItem()
{
    YItem *it = currentItem();
    if ( it )
        selectItem( it, !( it->selected() ) );
}
 
 
void NCMultiSelectionBox::setLabel( const std::string & nlabel )
{
    YMultiSelectionBox::setLabel( nlabel );
    NCPadWidget::setLabel( NCstring( nlabel ) );
}
 
 
/**
 * Create empty MsB pad
 **/
NCPad * NCMultiSelectionBox::CreatePad()
{
    wsze psze( defPadSze() );
    NCTablePad * npad = new NCTablePad( psze.H, psze.W, *this );
    npad->bkgd( listStyle().item.plain );
    npad->SetSepChar( ' ' );
    return npad;
}
 
 
void NCMultiSelectionBox::wRecoded()
{
    NCPadWidget::wRecoded();
}
 
 
NCursesEvent NCMultiSelectionBox::wHandleInput( wint_t key )
{
    NCursesEvent ret;
    bool valueChanged = false;
    YItem *oldCurrentItem = currentItem();
 
    if ( ! handleInput( key ) )
    {
        YItem *citem = currentItem();
 
        switch ( key )
        {
            case KEY_SPACE:
 
            case KEY_RETURN:
                toggleCurrentItem();
                valueChanged = true;
                break;
 
            case '+':
 
                if ( !isItemSelected( citem ) )
                {
                    selectItem( citem, true );
                    valueChanged = true;
                }
 
                myPad()->ScrlDown();
 
                break;
 
            case '-':
 
                if ( isItemSelected( citem ) )
                {
                    selectItem( citem, false );
                    valueChanged = true;
                }
 
                myPad()->ScrlDown();
 
                break;
        }
    }
 
    if ( notify() )
    {
        if ( valueChanged )
            ret = NCursesEvent::ValueChanged;
        else if ( oldCurrentItem != currentItem() )
            ret = NCursesEvent::SelectionChanged;
    }
 
    return ret;
}