/***************************************************************************
                      dbgpsdlg.cpp  -  pid selector using ps
                             -------------------
    begin                : Mon Sep 20 1999
    copyright            : (C) 1999 by John Birch
    email                : jbb@kdevelop.org
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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 "dbgpsdlg.h"

#include <kbuttonbox.h>
#include <kdialog.h>
#include <kglobalsettings.h>
#include <klocale.h>
#include <kprocess.h>
#include <kstdguiitem.h>
#include <kdeversion.h>

#include <qframe.h>
#include <qlabel.h>
#include <qlayout.h>
#include <qlistbox.h>
#include <qtoolbutton.h>
#include <qpushbutton.h>

#include <unistd.h>
#include <sys/types.h>

/***************************************************************************/

// Display a list of processes for the user to select one
// only display processes that they can do something with so if the user
// is root then display all processes
// For use with the internal debugger, but this dialog doesn't know anything
// about why it's doing it.

namespace JAVADebugger
{

Dbg_PS_Dialog::Dbg_PS_Dialog(QWidget *parent, const char *name)
    : KDialog(parent, name, true),      // modal
      psProc_(0),
      pids_(new QListBox(this)),
      heading_(new QLabel(" ", this)),
      pidLines_(QString())
{
    setCaption(i18n("Attach to Process"));

    QBoxLayout *topLayout = new QVBoxLayout(this, 5);

    heading_->setFont(KGlobalSettings::fixedFont());
    heading_->setFrameStyle(QFrame::Panel|QFrame::Sunken);
    heading_->setMaximumHeight(heading_->sizeHint().height());
    heading_->setMinimumSize(heading_->sizeHint());
    topLayout->addWidget(heading_, 5);

    topLayout->addWidget(pids_, 5);
    pids_->setFont(KGlobalSettings::fixedFont());

    KButtonBox *buttonbox = new KButtonBox(this, Qt::Horizontal, 5);
#if KDE_IS_VERSION( 3, 2, 90 )
    QPushButton *ok       = buttonbox->addButton(KStdGuiItem::ok());
    buttonbox->addStretch();
    QPushButton *cancel   = buttonbox->addButton(KStdGuiItem::cancel());
#else
    QPushButton *ok       = buttonbox->addButton(i18n("OK"));
    buttonbox->addStretch();
    QPushButton *cancel   = buttonbox->addButton(i18n("Cancel"));
#endif
    buttonbox->layout();
    topLayout->addWidget(buttonbox);

    connect(ok,     SIGNAL(clicked()),  SLOT(accept()));
    connect(cancel, SIGNAL(clicked()),  SLOT(reject()));

    psProc_ = new KShellProcess("/bin/sh");
    *psProc_ << "ps";
    *psProc_ << "x";
    pidCmd_ = "ps x";

    if (getuid() == 0) {
        *psProc_ << "a";
        pidCmd_ += " a";
    }

    connect( psProc_, SIGNAL(processExited(KProcess *)),                SLOT(slotProcessExited()) );
    connect( psProc_, SIGNAL(receivedStdout(KProcess *, char *, int)),  SLOT(slotReceivedOutput(KProcess *, char *, int)) );
    psProc_->start(KProcess::NotifyOnExit, KProcess::Stdout);

    // Default display to 40 chars wide, default height is okay
    resize( ((KGlobalSettings::fixedFont()).pointSize())*40, height());
    topLayout->activate();
}

/***************************************************************************/

Dbg_PS_Dialog::~Dbg_PS_Dialog()
{
    delete psProc_;
}

/***************************************************************************/

int Dbg_PS_Dialog::pidSelected()
{
    QString pidText = pids_->text(pids_->currentItem());
    return pidText.toInt();
}

/***************************************************************************/

void Dbg_PS_Dialog::slotReceivedOutput(KProcess */*proc*/, char *buffer, int buflen)
{
    pidLines_ += QString::fromLocal8Bit(buffer, buflen+1);
}

/***************************************************************************/

void Dbg_PS_Dialog::slotProcessExited()
{
    delete psProc_;
    psProc_ = 0;

    pidLines_ += '\n';

    int start = pidLines_.find('\n', 0);  // Skip the first line (header line)
    int pos;
    if (start != -1)
        heading_->setText(pidLines_.left(start));
    while ( (pos = pidLines_.find('\n', start)) != -1) {
        QString item = pidLines_.mid(start, pos-start);
        if (!item.isEmpty()) {
            if (item.find(pidCmd_) == -1)
                pids_->insertItem(item);
        }

        start = pos+1;
    }
}

/***************************************************************************/
}

#include "dbgpsdlg.moc"
