src/Sidebar.h

   1 /*
   2   Copyright (c) 2006 Gábor Lehel <illissius@gmail.com>
   3
   4   This library is free software; you can redistribute it and/or
   5   modify it under the terms of the GNU Library General Public
   6   License as published by the Free Software Foundation; either
   7   version 2 of the License, or (at your option) any later version.
   8
   9   This library is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12   Library General Public License for more details.
  13
  14   You should have received a copy of the GNU Library General Public License
  15   along with this library; see the file COPYING.LIB.  If not, write to
  16   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17   Boston, MA 02110-1301, USA.
  18 */
  19
  20 #ifndef AMAROK_SIDEBAR_H
  21 #define AMAROK_SIDEBAR_H
  22
  23 #include "widgets/SidebarWidget.h"
  24
  25 #include <KHBox>
  26
  27 #include <QIcon>
  28 #include <QFrame>
  29 #include <QLayout>
  30 #include <QStackedWidget>
  31
  32
  33 class SideBar: public KHBox
  34 {
  35     typedef KHBox super;
  36     Q_OBJECT
  37
  38     signals:
  39         void widgetActivated( int index );
  40         void widgetActivated( QWidget* );
  41
  42     public:
  43         explicit SideBar( QWidget *parent, QWidget *contentsWidget = 0 )
  44             : super( parent )
  45             , m_bar( new SideBarWidget( this ) )
  46             , m_frame( new KHBox( this ) )
  47             , m_widgets( new QStackedWidget( m_frame ) )
  48             , m_current( -1 )
  49         {
  50             connect( m_bar, SIGNAL( opened( int ) ), SLOT( openWidget( int ) ) );
  51             connect( m_bar, SIGNAL( closed() ), SLOT( closeWidgets() ) );
  52             m_frame->hide();
  53             m_widgets->setParent( m_frame );
  54             setContentsWidget( contentsWidget );
  55             layout()->setContentsMargins( 0, 0, 0, 0 );
  56         }
  57
  58         ~SideBar() {}
  59
  60         void deleteBrowsers()
  61         {
  62             QWidget * widget = m_widgets->widget( 0 );
  63             while( widget )
  64             {
  65                 m_widgets->removeWidget( widget );
  66                 delete widget;
  67                 widget = m_widgets->widget( 0 );
  68             }
  69         }
  70
  71         void setContentsWidget( QWidget *w )
  72         {
  73             m_contentsWidget = w;
  74             if( w )
  75                 w->setParent( this );
  76         }
  77         SideBarWidget *sideBarWidget() const { return m_bar; }
  78
  79         QWidget *contentsWidget() const { return m_contentsWidget; }
  80
  81         int addWidget( const QIcon &icon, const QString &name, QWidget *widget )
  82         {
  83             m_widgets->addWidget( widget );
  84             m_bar->addSideBar( icon, name );
  85             return m_widgets->count() - 1;
  86         }
  87
  88         void removeWidget( QWidget *widget )
  89         {
  90             m_widgets->removeWidget( widget );
  91         }
  92
  93
  94         QWidget *at( int index ) const { return m_widgets->widget( index ); }
  95
  96         int currentIndex() const { return m_current; }
  97
  98         QWidget *currentWidget() const
  99         {
 100             if( m_current >= 0 )
 101                 return at( m_current );
 102             else
 103                 return 0;
 104         }
 105
 106     public slots:
 107         void showWidget( int index ) { m_bar->open( index ); }
 108
 109     private slots:
 110         void openWidget( int index )
 111         {
 112             m_contentsWidget->setParent( m_frame );
 113             m_frame->show();
 114             m_widgets->setCurrentIndex( index );
 115             m_current = index;
 116             emit widgetActivated( currentIndex() );
 117             emit widgetActivated( currentWidget() );
 118         }
 119
 120         void closeWidgets()
 121         {
 122             m_contentsWidget->setParent( this );
 123             m_frame->hide();
 124             resize( m_bar->sizeHint() );
 125             m_current = -1;
 126             emit widgetActivated( currentIndex() );
 127             emit widgetActivated( currentWidget() );
 128         }
 129
 130     private:
 131         SideBarWidget *m_bar;
 132         KHBox *m_frame;
 133         QStackedWidget *m_widgets;
 134         QWidget *m_contentsWidget;
 135         int m_current;
 136 };
 137
 138 #endif