locate.cpp

LINUX 下, 以 QT/KDE 写的档案管理员

/***************************************************************************
                         locate.cpp  -  description
                             -------------------
    copyright            : (C) 2004 by Csaba Karai
    e-mail               : [e-mail]
    web site             : http://krusader.sourceforge.net
 ---------------------------------------------------------------------------
  Description
 ***************************************************************************

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                                                     S o u r c e    F i l e

 ***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

#include "locate.h"
#include "../krusader.h"
#include "../krusaderview.h"
#include "../Panel/listpanel.h"
#include "../Panel/panelfunc.h"
#include "../defaults.h"
#include "../krservices.h"
#include "../VFS/vfs.h"
#include "../VFS/virt_vfs.h"
#include "../KViewer/krviewer.h"
#include "../panelmanager.h"
#include <klocale.h>
#include <qhbox.h>
#include <qlabel.h>
#include <qlayout.h>
#include <qfontmetrics.h>
#include <kmessagebox.h>
#include <kpopupmenu.h>
#include <qcursor.h>
#include <qeventloop.h>
#include <kfinddialog.h>
#include <kinputdialog.h>
#include <qregexp.h>
#include <qdir.h>
#include <qclipboard.h>
#include <kurldrag.h>
#include <../kicons.h>

// these are the values that will exist in the menu
#define VIEW_ID                     90
#define EDIT_ID                     91
#define FIND_ID                     92
#define FIND_NEXT_ID                93
#define FIND_PREV_ID                94
#define COPY_SELECTED_TO_CLIPBOARD  95
//////////////////////////////////////////////////////////

class LocateListView : public KListView
{
public:
  LocateListView( QWidget * parent, const char * name = 0 ) : KListView( parent, name )
  {
  }

  void startDrag()
  {
    KURL::List urls;

    QListViewItem * item = firstChild();
    while( item )
    {
      if( item->isSelected() )
         urls.push_back( vfs::fromPathOrURL( item->text( 0 ) ) );

      item = item->nextSibling();
    }

    if( urls.count() == 0 )
      return;

    KURLDrag *d = new KURLDrag(urls, this);
    d->setPixmap( FL_LOADICON( "file" ), QPoint( -7, 0 ) );
    d->dragCopy();
  }
};

KProcess *  LocateDlg::updateProcess = 0;
LocateDlg * LocateDlg::LocateDialog = 0;

LocateDlg::LocateDlg() : KDialogBase(0,0,false,"Locate", KDialogBase::User1 | KDialogBase::User2 | KDialogBase::User3 | KDialogBase::Close,
      KDialogBase::User3, false, i18n("Stop"), i18n("Update DB"), i18n("Locate") ), isFeedToListBox( false )
{
  QWidget *widget=new QWidget(this, "locateMainWidget");
  QGridLayout *grid = new QGridLayout( widget );
  grid->setSpacing( 6 );
  grid->setMargin( 11 );

  setPlainCaption( i18n( "Krusader::Locate" ) );
  
  QHBox *hbox = new QHBox( widget, "locateHBox" );
  QLabel *label = new QLabel( i18n( "Search for:" ), hbox, "locateLabel" );
  locateSearchFor = new KHistoryCombo( false, hbox, "locateSearchFor" );
  label->setBuddy( locateSearchFor );
  krConfig->setGroup("Locate");
  QStringList list = krConfig->readListEntry("Search For");
  locateSearchFor->setMaxCount(25);  // remember 25 items
  locateSearchFor->setHistoryItems(list);
  locateSearchFor->setEditable( true );
  locateSearchFor->setDuplicatesEnabled( false );
  locateSearchFor->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Fixed);
  locateSearchFor->lineEdit()->setFocus();

  grid->addWidget( hbox, 0, 0 );

  QHBox *hbox2 = new QHBox( widget, "locateHBox" );
  QSpacerItem* spacer = new QSpacerItem( 40, 20, QSizePolicy::Expanding, QSizePolicy::Minimum );
  hbox2->layout()->addItem( spacer );
  dontSearchInPath = new QCheckBox( i18n( "Don't search in path" ), hbox2, "dontSearchInPath" );
  dontSearchInPath->setChecked( krConfig->readBoolEntry("Dont Search In Path") );
  existingFiles = new QCheckBox( i18n( "Show only the existing files" ), hbox2, "existingFiles" );
  existingFiles->setChecked( krConfig->readBoolEntry("Existing Files") );
  caseSensitive = new QCheckBox( i18n( "Case Sensitive" ), hbox2, "caseSensitive" );
  caseSensitive->setChecked( krConfig->readBoolEntry("Case Sensitive") );
  grid->addWidget( hbox2, 1, 0 );

  QFrame *line1 = new QFrame( widget, "locateLine1" );
  line1->setFrameStyle( QFrame::HLine | QFrame::Sunken );
  grid->addWidget( line1, 2, 0 );

  resultList=new LocateListView( widget );  // create the main container

  krConfig->setGroup("Look&Feel");
  resultList->setFont(krConfig->readFontEntry("Filelist Font",_FilelistFont));

  resultList->setAllColumnsShowFocus(true);
  resultList->setVScrollBarMode(QScrollView::Auto);
  resultList->setHScrollBarMode(QScrollView::Auto);
  resultList->setShowSortIndicator(false);
  resultList->setSorting(-1);
  resultList->setSelectionMode( QListView::Extended );

  resultList->addColumn( i18n("Results"), QFontMetrics(resultList->font()).width("W") * 60 );
  resultList->setColumnWidthMode(0,QListView::Maximum);

  connect( resultList,SIGNAL(rightButtonPressed(QListViewItem *, const QPoint &, int)),
           this, SLOT(slotRightClick(QListViewItem *)));
  connect( resultList,SIGNAL(doubleClicked(QListViewItem *)),
           this, SLOT(slotDoubleClick(QListViewItem *)));
  connect( resultList,SIGNAL(returnPressed(QListViewItem *)),
           this, SLOT(slotDoubleClick(QListViewItem *)));
           
  grid->addWidget( resultList, 3, 0 );

  QFrame *line2 = new QFrame( widget, "locateLine2" );
  line2->setFrameStyle( QFrame::HLine | QFrame::Sunken );
  grid->addWidget( line2, 4, 0 );

  enableButton( KDialogBase::User1, false );  /* disable the stop button */

  if( updateProcess )
  {
    if( updateProcess->isRunning() )
    {
      connect( updateProcess, SIGNAL(processExited(KProcess *)), this, SLOT(updateFinished()));
      enableButton( KDialogBase::User2, false );
    }
    else
      updateFinished();
  }

  setMainWidget(widget);
  show();

  LocateDialog = this;
}

void LocateDlg::slotUser1()   /* The stop / feed to listbox button */
{
  if( isFeedToListBox )
    feedToListBox();
  else
    stopping = true;
}

void LocateDlg::slotUser2()   /* The Update DB button */
{
  if( !updateProcess )
  {
    krConfig->setGroup("Locate");

    updateProcess = new KProcess();
    *updateProcess << KrServices::fullPathName( "updatedb" );
    *updateProcess << KrServices::separateArgs( krConfig->readEntry( "UpdateDB Arguments", "" ) );
    
    connect( updateProcess, SIGNAL(processExited(KProcess *)), this, SLOT(updateFinished()));
    updateProcess->start(KProcess::NotifyOnExit);
    enableButton( KDialogBase::User2, false );
  }
}

void LocateDlg::updateFinished()
{
  delete updateProcess;
  updateProcess = 0;
  enableButton( KDialogBase::User2, true );
}

void LocateDlg::slotUser3()   /* The locate button */
{
  locateSearchFor->addToHistory(locateSearchFor->currentText());
  QStringList list = locateSearchFor->historyItems();
  krConfig->setGroup("Locate");
  krConfig->writeEntry("Search For", list);
  krConfig->writeEntry("Dont Search In Path", dontSearchPath = dontSearchInPath->isChecked() );
  krConfig->writeEntry("Existing Files", onlyExist = existingFiles->isChecked() );
  krConfig->writeEntry("Case Sensitive", isCs = caseSensitive->isChecked() );

  if( !KrServices::cmdExist( "locate" ) )
  {
    KMessageBox::error(0,
      i18n("Can't start 'locate'! Check the 'Dependencies' page in konfigurator."));
    return;
  }
  
  resultList->clear();
  lastItem = 0;
  remaining = "";

  enableButton( KDialogBase::User3, false );  /* disable the locate button */
  enableButton( KDialogBase::User1, true );   /* enable the stop button */
  setButtonText( KDialogBase::User1, i18n( "Stop" ) ); /* the button behaves as stop */
  isFeedToListBox = false;
  resultList->setFocus();

  qApp->processEvents();

  stopping = false;
  
  KProcess locateProc;
  connect( &locateProc, SIGNAL( receivedStdout(KProcess *, char *, int) ),
            this, SLOT( processStdout(KProcess *, char *, int) ) );
  connect( &locateProc, SIGNAL( receivedStderr(KProcess *, char *, int) ),
            this, SLOT( processStderr(KProcess *, char *, int) ) );

  locateProc << KrServices::fullPathName( "locate" );
  if( !isCs )
    locateProc << "-i";
  locateProc << (pattern = locateSearchFor->currentText());
  
  if( !pattern.startsWith( "*" ) )
    pattern = "*" + pattern;
  if( !pattern.endsWith( "*" ) )
    pattern = pattern + "*";
  
  collectedErr = "";
  bool result = !locateProc.start( KProcess::Block, KProcess::AllOutput );
  if( !collectedErr.isEmpty() && ( !locateProc.normalExit() || locateProc.exitStatus() ) )
  {
     KMessageBox::error( krApp, i18n( "Locate produced the following error message:\n\n" ) + collectedErr );
  }else if ( result )
  {
     KMessageBox::error( krApp, i18n( "Error during the start of 'locate' process!" ) );
  }
  enableButton( KDialogBase::User3, true );  /* enable the locate button */
  
  if( resultList->childCount() == 0 )
  {
    locateSearchFor->setFocus();
    enableButton( KDialogBase::User1, false ); /* disable the stop button */
    isFeedToListBox = false;
  }else{
    setButtonText( KDialogBase::User1, i18n("Feed to listbox") ); /* feed to listbox */
    isFeedToListBox = true;
  }
}

void LocateDlg::processStdout(KProcess *proc, char *buffer, int length)
{
  char *buf = new char[ length+1 ];
  memcpy( buf, buffer, length );
  buf[ length ] = 0;

  remaining += QString::fromLocal8Bit( buf );
  delete []buf;

  QStringList list = QStringList::split("\n", remaining );
  int items = list.size();

  for ( QStringList::Iterator it = list.begin(); it != list.end(); ++it )
  {
    if( --items == 0 && buffer[length-1] != '\n' )
      remaining = *it;
    else
    {
      if( dontSearchPath )
      {
        QRegExp regExp( pattern, isCs, true );