/*
   Copyright (C) 2002 by Roberto Raggi <roberto@kdevelop.org>
   Copyright (C) 2005 by Nicolas Escuder <n.escuder@intra-links.com>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   version 2, License as published by the Free Software Foundation.

   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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/

#include "phperrorview.h"
#include "phpsupportpart.h"

#include <kdevpartcontroller.h>
#include <kdevmainwindow.h>
#include <kdevproject.h>

#include <kdeversion.h>
#include <kparts/part.h>
#include <ktexteditor/editinterface.h>
#include <ktexteditor/document.h>
#include <ktexteditor/markinterface.h>

#include <ktexteditor/markinterfaceextension.h>
#include <ktexteditor/view.h>

#include <kdebug.h>
#include <klocale.h>
#include <kstatusbar.h>
#include <kurl.h>
#include <kapplication.h>
#include <kiconloader.h>
#include <kdialogbase.h>

#include <kconfig.h>

#include <qtimer.h>
#include <qregexp.h>
#include <qvbox.h>
#include <qfileinfo.h>
#include <qwhatsthis.h>
#include <qtabbar.h>
#include <qwidgetstack.h>
#include <qlayout.h>
#include <qlineedit.h>

class ProblemItem: public KListViewItem
{
public:
    ProblemItem( QListView* parent, const QString& problem,
       const QString& file, const QString& line, const QString& column  )
   : KListViewItem( parent, problem, file, line, column ) {}

    ProblemItem( QListViewItem* parent, const QString& problem,
       const QString& file, const QString& line, const QString& column  )
   : KListViewItem( parent,  problem, file, line, column ) {}

    int compare( QListViewItem* item, int column, bool ascending ) const {
   if( column == 2 || column == 3 ){
       int a = text( column ).toInt();
       int b = item->text( column ).toInt();
       if( a == b )
      return 0;
       return( a > b ? 1 : -1 );
   }
   return KListViewItem::compare( item, column, ascending );
    }

};

PHPErrorView::PHPErrorView( PHPSupportPart* part, QWidget* parent, const char* name )
    : QWidget( parent, name ? name : "problemreporter" ),
      m_phpSupport( part ),
      m_document( 0 ),
      m_markIface( 0 )
{
    QWhatsThis::add(this, i18n("<b>Problem reporter</b><p>This window shows various \"problems\" in your project. "
        "It displays TODO entries, FIXME's and errors reported by a language parser. "
        "To add a TODO or FIXME entry, just type<br>"
        "<tt>//@todo my todo</tt><br>"
        "<tt>//TODO: my todo</tt><br>"
        "<tt>//FIXME fix this</tt>"));

    m_gridLayout = new QGridLayout(this,2,3);

    m_errorList = new KListView(this);
    m_fixmeList = new KListView(this);
    m_todoList = new KListView(this);
    m_filteredList = new KListView(this);
    m_currentList = new KListView(this);

    m_filteredList->addColumn( i18n("Level") );
    m_currentList->addColumn( i18n("Level") );

    //addColumn( i18n("Level") );
    InitListView(m_errorList);
    InitListView(m_fixmeList);
    InitListView(m_todoList);
    InitListView(m_filteredList);
    InitListView(m_currentList);
    m_currentList->removeColumn(1);

    m_widgetStack = new QWidgetStack(this);
    m_widgetStack->addWidget(m_currentList,0);
    m_widgetStack->addWidget(m_errorList,1);
    m_widgetStack->addWidget(m_fixmeList,2);
    m_widgetStack->addWidget(m_todoList,3);
    m_widgetStack->addWidget(m_filteredList,4);

    m_tabBar = new QTabBar(this);
    m_tabBar->insertTab(new QTab(i18n("Current")),0);
    m_tabBar->insertTab(new QTab(i18n("Errors")),1);
    m_tabBar->insertTab(new QTab(i18n("Fixme")),2);
    m_tabBar->insertTab(new QTab(i18n("Todo")),3);
    m_tabBar->insertTab(new QTab(i18n("Filtered")),4);
    m_tabBar->setTabEnabled(0,false);
    m_tabBar->setTabEnabled(4,false);

    m_tabBar->setCurrentTab(0);

    m_filterEdit = new KLineEdit(this);

    QLabel* m_filterLabel = new QLabel(i18n("Lookup:"),this);

    m_gridLayout->addWidget(m_tabBar,0,0);
    m_gridLayout->addMultiCellWidget(m_widgetStack,1,1,0,2);
    m_gridLayout->addWidget(m_filterLabel,0,1,Qt::AlignRight);
    m_gridLayout->addWidget(m_filterEdit,0,2,Qt::AlignLeft);

    connect( m_filterEdit, SIGNAL(returnPressed()), this, SLOT(slotFilter()) );
    connect( m_filterEdit, SIGNAL(textChanged( const QString & )), this, SLOT(slotFilter()) );
    connect( m_tabBar, SIGNAL(selected(int)), this, SLOT(slotTabSelected(int)) );
    connect( part->partController(), SIGNAL(activePartChanged(KParts::Part*)), this, SLOT(slotActivePartChanged(KParts::Part*)) );
    connect( part->partController(), SIGNAL(partAdded(KParts::Part*)), this, SLOT(slotPartAdded(KParts::Part*)) );
    connect( part->partController(), SIGNAL(partRemoved(KParts::Part*)), this, SLOT(slotPartRemoved(KParts::Part*)) );

    slotActivePartChanged( part->partController()->activePart() );
}

void PHPErrorView::slotFilter()
{
    if(!m_tabBar->isTabEnabled(4))
      m_tabBar->setTabEnabled(4,true);

    m_tabBar->tab(4)->setText(i18n("Filtered: %1").arg( m_filterEdit->text() ));
    m_tabBar->setCurrentTab(4);

    m_filteredList->clear();

    filterList(m_errorList,i18n("Error"));
    filterList(m_fixmeList,i18n("Fixme"));
    filterList(m_todoList,i18n("Todo"));

}

void PHPErrorView::filterList(KListView* listview, const QString& level)
{
    QListViewItemIterator it( listview );
    while ( it.current() ) {
        if ( it.current()->text(3).contains(m_filterEdit->text(),false))
       new KListViewItem(m_filteredList,level,
       it.current()->text(0),it.current()->text(1),it.current()->text(2),it.current()->text(3));
        ++it;
    }
}

void PHPErrorView::slotTabSelected( int tabindex )
{
    m_widgetStack->raiseWidget(tabindex);
}

void PHPErrorView::InitListView(KListView* listview)
{
    listview->addColumn( i18n("File") );
    listview->addColumn( i18n("Line") );
    listview->addColumn( i18n("Column") );
    listview->addColumn( i18n("Problem") );
    listview->setAllColumnsShowFocus( TRUE );

    connect( listview, SIGNAL(executed(QListViewItem*)),
             this, SLOT(slotSelected(QListViewItem*)) );

    connect( listview, SIGNAL(returnPressed(QListViewItem*)),
             this, SLOT(slotSelected(QListViewItem* )) );

}

PHPErrorView::~PHPErrorView()
{
}

void PHPErrorView::slotActivePartChanged( KParts::Part* part )
{
   if ( !part ) {
      m_tabBar->setTabEnabled(0,false);
      return;
   }

   if ( m_document )
      disconnect( m_document, 0, this, 0 );

   m_document = dynamic_cast<KTextEditor::Document*>( part );
   m_markIface = 0;

   if ( !m_document ) {
      m_tabBar->setTabEnabled(0,false);
      return;
   }

   m_fileName = m_document->url().path();

   initCurrentList();

   m_markIface = dynamic_cast<KTextEditor::MarkInterface*>( part );
}

void PHPErrorView::removeAllItems( QListView* listview, const QString& filename )
{
   QListViewItem* current = listview->firstChild();
   while( current ){
      QListViewItem* i = current;
      current = current->nextSibling();

      if( i->text(0) == filename )
         delete( i );
   }
}

void PHPErrorView::removeAllProblems( const QString& filename )
{
   QString relFileName = filename;
   relFileName.remove(m_phpSupport->project()->projectDirectory());

   kdDebug(9008) << "PHPErrorView::removeAllProblems()" << relFileName << endl;

   if (filename == m_fileName)
      m_currentList->clear();

   removeAllItems(m_errorList,relFileName);
   removeAllItems(m_fixmeList,relFileName);
   removeAllItems(m_todoList,relFileName);

   if ( m_document && m_markIface ) {
      QPtrList<KTextEditor::Mark> marks = m_markIface->marks();
      QPtrListIterator<KTextEditor::Mark> it( marks );
      while( it.current() ) {
         m_markIface->removeMark( it.current()->line, KTextEditor::MarkInterface::markType07 );
         ++it;
      }
   }
}

void PHPErrorView::initCurrentList()
{
   m_tabBar->setTabEnabled(0,true);

   QString relFileName = m_fileName;

   if (m_phpSupport->project())
      relFileName.remove(m_phpSupport->project()->projectDirectory());

   m_currentList->clear();

   updateCurrentWith(m_errorList, i18n("Error"),relFileName);
   updateCurrentWith(m_fixmeList,i18n("Fixme"),relFileName);
   updateCurrentWith(m_todoList,i18n("Todo"),relFileName);
}

void PHPErrorView::updateCurrentWith(QListView* listview, const QString& level, const QString& filename)
{
   QListViewItemIterator it(listview);
   while ( it.current() ) {
      if ( it.current()->text(0) == filename)
         new QListViewItem(m_currentList,level,it.current()->text(1),it.current()->text(2),it.current()->text(3));
      ++it;
   }
}

void PHPErrorView::slotSelected( QListViewItem* item )
{
   bool is_filtered = false;
   bool is_current = false;

   if (item->listView() == m_filteredList)
      is_filtered = true;
   else if(item->listView() == m_currentList)
      is_current = true;

   KURL url( is_current ? m_fileName : item->text(0 + is_filtered) );
   int line = item->text( 1 + is_filtered).toInt();
   m_phpSupport->partController()->editDocument( url, line-1 );
}

void PHPErrorView::reportProblem( int level, const QString& fileName, int line, const QString& text)
{
   int markType = levelToMarkType( level );
   if ( markType != -1 && m_document && m_markIface && m_fileName == fileName ) {
      m_markIface->addMark( line, markType );
   }

   QString msg = text;
   msg = msg.replace( QRegExp("\n"), "" );

   QString relFileName = fileName;
   relFileName.remove(m_phpSupport->project()->projectDirectory());

   KListView* list;
   switch( level )
   {
      case Error:
      case ErrorNoSuchFunction:
      case ErrorParse:
      list = m_errorList;
      m_tabBar->setCurrentTab(m_tabBar->tab(1));
      break;

      case Warning:
      list = m_errorList;
      break;

      case Todo:
      list = m_todoList;
      break;

      case Fixme:
      list = m_fixmeList;
      break;

      default:
      list = NULL;
      break;
   }

   if (list) {
      kdDebug(9018) << "PB " << msg << endl;
      new ProblemItem( list, relFileName, QString::number( line + 1 ), 0, msg );
   }

   if (fileName == m_fileName)
      new QListViewItem(m_currentList, levelToString( level ), QString::number( line + 1 ), 0, msg);
}

void PHPErrorView::slotPartAdded( KParts::Part* part )
{
   KTextEditor::MarkInterfaceExtension* iface = dynamic_cast<KTextEditor::MarkInterfaceExtension*>( part );

   if ( !iface )
      return;

   iface->setPixmap( KTextEditor::MarkInterface::markType07, SmallIcon("stop") );
}

void PHPErrorView::slotPartRemoved( KParts::Part* part )
{
   kdDebug(9007) << "PHPErrorView::slotPartRemoved()" << endl;
   if ( part == m_document ){
      m_document = 0;
   }
}

QString PHPErrorView::levelToString( int level ) const
{
   switch( level )
   {
      case ErrorNoSuchFunction:
      return QString( i18n("Undefined function") );

      case ErrorParse:
      return QString( i18n("Parse Error") );

      case Error:
      return QString( i18n("Error") );

      case Warning:
      return QString( i18n("Warning") );

      case Todo:
      return QString( i18n("Todo") );

      case Fixme:
      return QString( i18n("Fixme") );

      default:
      return QString::null;
    }

}

int PHPErrorView::levelToMarkType( int level ) const
{
   switch( level )
   {
      case ErrorNoSuchFunction:
      case ErrorParse:
      case Error:
      return KTextEditor::MarkInterface::markType07;

      case Warning:
      return -1;

      case Todo:
      return -1;

      case Fixme:
      return -1;

      default:
      return -1;
    }

}

#include "phperrorview.moc"