File indexing completed on 2024-04-14 15:05:36

 /***************************************************************************
     smb4knetworkbrowser  -  The network browser widget of Smb4K.
                              -------------------
     begin                : Mo Jan 8 2007
     copyright            : (C) 2007-2019 by Alexander Reinholdt
     email                : alexander.reinholdt@kdemail.net
  ***************************************************************************/
 
 /***************************************************************************
  *   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, write to the                         *
  *   Free Software Foundation, Inc., 51 Franklin Street, Suite 500, Boston,*
  *   MA 02110-1335, USA                                                    *
  ***************************************************************************/
 
 #ifdef HAVE_CONFIG_H
 #include <config.h>
 #endif
 
 // application specific includes
 #include "smb4knetworkbrowser.h"
 #include "smb4knetworkbrowseritem.h"
 #include "smb4ktooltip.h"
 #include "core/smb4ksettings.h"
 #include "core/smb4kglobal.h"
 #include "core/smb4kshare.h"
 
 // Qt includes
 #include <QTimer>
 #include <QMouseEvent>
 #include <QFocusEvent>
 #include <QWheelEvent>
 #include <QCursor>
 #include <QHelpEvent>
 #include <QHeaderView>
 #include <QDesktopWidget>
 #include <QApplication>
 
 // KDE includes
 #include <KI18n/KLocalizedString>
 
 using namespace Smb4KGlobal;
 
 Smb4KNetworkBrowser::Smb4KNetworkBrowser(QWidget *parent)
 : QTreeWidget(parent)
 {
   setRootIsDecorated(true);
   setAllColumnsShowFocus(false);
   setMouseTracking(true);
   setSelectionMode(ExtendedSelection);
   
   setContextMenuPolicy(Qt::CustomContextMenu);
 
   m_tooltip_item = 0;
   m_mouse_inside = false;
 
   QStringList header_labels;
   header_labels.append(i18n("Network"));
   header_labels.append(i18n("Type"));
   header_labels.append(i18n("IP Address"));
   header_labels.append(i18n("Comment"));
   setHeaderLabels(header_labels);
 
   header()->setSectionResizeMode(QHeaderView::ResizeToContents);
 
   // 
   // Connections
   // 
   connect(this, SIGNAL(itemActivated(QTreeWidgetItem*,int)), this, SLOT(slotItemActivated(QTreeWidgetItem*,int)));
   connect(this, SIGNAL(itemEntered(QTreeWidgetItem*,int)), this, SLOT(slotItemEntered(QTreeWidgetItem*,int)));
   connect(this, SIGNAL(viewportEntered()), this, SLOT(slotViewportEntered()));
   connect(this, SIGNAL(itemSelectionChanged()), this, SLOT(slotItemSelectionChanged()));
 }
 
 
 Smb4KNetworkBrowser::~Smb4KNetworkBrowser()
 {
 }
 
 
 bool Smb4KNetworkBrowser::event(QEvent *e)
 {
   switch (e->type())
   {
     case QEvent::ToolTip:
     {
       // Intercept the tool tip event and show our own tool tip.
       QPoint pos = viewport()->mapFromGlobal(cursor().pos());
       Smb4KNetworkBrowserItem *item = static_cast<Smb4KNetworkBrowserItem *>(itemAt(pos));
       
       if (item)
       {
         if (Smb4KSettings::showNetworkItemToolTip())
         {
           int ind = 0;
 
           switch (item->type())
           {
             case Host:
             {
               ind = 2;
               break;
             }
             case Share:
             {
               ind = 3;
               break;
             }
             default:
             {
               ind = 1;
               break;
             }
           }
           
           // Check that the tooltip is not over the root decoration.
           // If it is, hide it.
           if (pos.x() <= ind * indentation())
           {
             if (m_tooltip_item)
             {
               emit aboutToHideToolTip(m_tooltip_item);
               m_tooltip_item->tooltip()->hide();
               m_tooltip_item = 0;
             }
           }
           else
           {
             m_tooltip_item = item;
             emit aboutToShowToolTip(m_tooltip_item);
             m_tooltip_item->tooltip()->show(cursor().pos());
           }
         }
         else
         {
           if (m_tooltip_item)
           {
             emit aboutToHideToolTip(m_tooltip_item);
             m_tooltip_item->tooltip()->hide();
             m_tooltip_item = 0;
           }
         }
       }
       else
       {
         if (m_tooltip_item)
         {
           emit aboutToHideToolTip(m_tooltip_item);
           m_tooltip_item->tooltip()->hide();
           m_tooltip_item = 0;
         }
       }
       
       break;
     }
     default:
     {
       break;
     }
   }
   
   return QTreeWidget::event(e);
 }
 
 
 void Smb4KNetworkBrowser::mouseMoveEvent(QMouseEvent *e)
 {
   // Find the item over which the user moved the mouse:
   Smb4KNetworkBrowserItem *item = static_cast<Smb4KNetworkBrowserItem *>(itemAt(e->pos()));
 
   if (item)
   {
     emit itemEntered(item, columnAt(e->pos().x()));
     
     // Hide tool tip if the items diverge.
     if (m_tooltip_item && m_tooltip_item->tooltip()->networkItem() != item->networkItem())
     {
       emit aboutToHideToolTip(m_tooltip_item);
       m_tooltip_item->tooltip()->hide();
       m_tooltip_item = 0;
     }
   }
   else
   {
     // Hide the tool tip
     if (m_tooltip_item)
     {
       emit aboutToHideToolTip(m_tooltip_item);
       m_tooltip_item->tooltip()->hide();
       m_tooltip_item = 0;
     }
   }
 
   QTreeWidget::mouseMoveEvent(e);
 }
 
 
 void Smb4KNetworkBrowser::leaveEvent(QEvent *e)
 {
   if (m_tooltip_item)
   {
     emit aboutToHideToolTip(m_tooltip_item);
     m_tooltip_item->tooltip()->hide();
     m_tooltip_item = 0;
   }
   
   m_mouse_inside = false;
 
   QTreeWidget::leaveEvent(e);
 }
 
 
 void Smb4KNetworkBrowser::enterEvent(QEvent *e)
 {
   m_mouse_inside = true;
 
   QTreeWidget::enterEvent(e);
 }
 
 
 void Smb4KNetworkBrowser::mousePressEvent(QMouseEvent *e)
 {
   // Hide the current tool tip so that it is not in the way.
   if (m_tooltip_item)
   {
     emit aboutToHideToolTip(m_tooltip_item);
     m_tooltip_item->tooltip()->hide();
     m_tooltip_item = 0;
   }
 
   // Get the item that is under the mouse. If there is no
   // item, unselect the current item.
   QTreeWidgetItem *item = itemAt(e->pos());
 
   if (!item && currentItem())
   {
     currentItem()->setSelected(false);
     setCurrentItem(0);
     emit itemPressed(currentItem(), -1);
   }
 
   QTreeWidget::mousePressEvent(e);
 }
 
 
 void Smb4KNetworkBrowser::focusOutEvent(QFocusEvent *e)
 {
   QTreeWidget::focusOutEvent(e);
 }
 
 
 void Smb4KNetworkBrowser::wheelEvent(QWheelEvent *e)
 {
   if (m_tooltip_item)
   {
     emit aboutToHideToolTip(m_tooltip_item);
     m_tooltip_item->tooltip()->hide();
     m_tooltip_item = 0;
   }
   
   QTreeWidget::wheelEvent(e);
 }
 
 
 /////////////////////////////////////////////////////////////////////////////
 // SLOT IMPLEMENTATIONS
 /////////////////////////////////////////////////////////////////////////////
 
 void Smb4KNetworkBrowser::slotItemEntered(QTreeWidgetItem *item, int /*column*/)
 {
   Smb4KNetworkBrowserItem *browser_item = static_cast<Smb4KNetworkBrowserItem *>(item);
   
   if (m_tooltip_item && m_tooltip_item != browser_item)
   {
     emit aboutToHideToolTip(m_tooltip_item);
     m_tooltip_item->tooltip()->hide();
     m_tooltip_item = 0;
   }
 }
 
 
 void Smb4KNetworkBrowser::slotViewportEntered()
 {
   if (m_tooltip_item)
   {
     emit aboutToHideToolTip(m_tooltip_item);
     m_tooltip_item->tooltip()->hide();
     m_tooltip_item = 0;
   }
 }
 
 
 void Smb4KNetworkBrowser::slotItemActivated(QTreeWidgetItem *item, int /*column*/)
 {
   if (m_tooltip_item)
   {
     emit aboutToHideToolTip(m_tooltip_item);
     m_tooltip_item->tooltip()->hide();
     m_tooltip_item = 0;
   }
 
   // Only do something if there are no keyboard modifiers pressed
   // and there is only one item selected.
   if (QApplication::keyboardModifiers() == Qt::NoModifier && selectedItems().size() == 1)
   {
     if (item)
     {
       switch (item->type())
       {
         case Workgroup:
         case Host:
         {
           if (!item->isExpanded())
           {
             expandItem(item);
           }
           else
           {
             collapseItem(item);
           }
 
           break;
         }
         default:
         {
           break;
         }
       }
     }
   }
 }
 
 
 void Smb4KNetworkBrowser::slotItemSelectionChanged()
 {
   if (selectedItems().size() > 1)
   {
     // If multiple items are selected, only allow shares
     // to stay selected.
     for (int i = 0; i < selectedItems().size(); ++i)
     {
       Smb4KNetworkBrowserItem *item = static_cast<Smb4KNetworkBrowserItem *>(selectedItems()[i]);
       
       if (item)
       {
         switch (item->networkItem()->type())
         {
           case Workgroup:
           case Host:
           {
             item->setSelected(false);
             break;
           }
           case Share:
           {
             if (item->shareItem()->isPrinter())
             {
               item->setSelected(false);
             }
             break;
           }
           default:
           {
             break;
           }
         }
       }
     }
   }
 }