src/panels/terminal/terminalpanel.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2007-2010 by Peter Penz <peter.penz19@gmail.com>        *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program 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         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #include "terminalpanel.h"
  21
  22 #include <signal.h>
  23
  24 #include <KPluginLoader>
  25 #include <KPluginFactory>
  26 #include <kde_terminal_interface_v2.h>
  27 #include <KParts/Part>
  28 #include <KShell>
  29 #include <KIO/Job>
  30 #include <KIO/JobUiDelegate>
  31
  32 #include <QBoxLayout>
  33 #include <QShowEvent>
  34
  35 TerminalPanel::TerminalPanel(QWidget* parent) :
  36     Panel(parent),
  37     m_clearTerminal(true),
  38     m_mostLocalUrlJob(0),
  39     m_layout(0),
  40     m_terminal(0),
  41     m_terminalWidget(0),
  42     m_konsolePart(0),
  43     m_konsolePartCurrentDirectory()
  44 {
  45     m_layout = new QVBoxLayout(this);
  46     m_layout->setMargin(0);
  47 }
  48
  49 TerminalPanel::~TerminalPanel()
  50 {
  51 }
  52
  53 void TerminalPanel::terminalExited()
  54 {
  55     m_terminal = 0;
  56     emit hideTerminalPanel();
  57 }
  58
  59 void TerminalPanel::dockVisibilityChanged()
  60 {
  61     // Only react when the DockWidget itself (not some parent) is hidden. This way we don't
  62     // respond when e.g. Dolphin is minimized.
  63     if (parentWidget() && parentWidget()->isHidden() &&
  64         m_terminal && (m_terminal->foregroundProcessId() == -1)) {
  65         // Make sure that the following "cd /" command will not affect the view.
  66         disconnect(m_konsolePart, SIGNAL(currentDirectoryChanged(QString)),
  67                    this, SLOT(slotKonsolePartCurrentDirectoryChanged(QString)));
  68
  69         // Make sure this terminal does not prevent unmounting any removable drives
  70         changeDir(KUrl::fromPath("/"));
  71
  72         // Because we have disconnected from the part's currentDirectoryChanged()
  73         // signal, we have to update m_konsolePartCurrentDirectory manually. If this
  74         // was not done, showing the panel again might not set the part's working
  75         // directory correctly.
  76         m_konsolePartCurrentDirectory = "/";
  77     }
  78 }
  79
  80 bool TerminalPanel::urlChanged()
  81 {
  82     if (!url().isValid()) {
  83         return false;
  84     }
  85
  86     const bool sendInput = m_terminal && (m_terminal->foregroundProcessId() == -1) && isVisible();
  87     if (sendInput) {
  88         changeDir(url());
  89     }
  90
  91     return true;
  92 }
  93
  94 void TerminalPanel::showEvent(QShowEvent* event)
  95 {
  96     if (event->spontaneous()) {
  97         Panel::showEvent(event);
  98         return;
  99     }
 100
 101     if (!m_terminal) {
 102         m_clearTerminal = true;
 103         KPluginFactory* factory = KPluginLoader("libkonsolepart").factory();
 104         m_konsolePart = factory ? (factory->create<KParts::ReadOnlyPart>(this)) : 0;
 105         if (m_konsolePart) {
 106             connect(m_konsolePart, SIGNAL(destroyed(QObject*)), this, SLOT(terminalExited()));
 107             m_terminalWidget = m_konsolePart->widget();
 108             m_layout->addWidget(m_terminalWidget);
 109             m_terminal = qobject_cast<TerminalInterfaceV2 *>(m_konsolePart);
 110         }
 111     }
 112     if (m_terminal) {
 113         connect(m_konsolePart, SIGNAL(currentDirectoryChanged(QString)),
 114                 this, SLOT(slotKonsolePartCurrentDirectoryChanged(QString)));
 115         m_terminal->showShellInDir(url().toLocalFile());
 116         changeDir(url());
 117         m_terminalWidget->setFocus();
 118     }
 119
 120     Panel::showEvent(event);
 121 }
 122
 123 void TerminalPanel::changeDir(const KUrl& url)
 124 {
 125     delete m_mostLocalUrlJob;
 126     m_mostLocalUrlJob = 0;
 127
 128     if (url.isLocalFile()) {
 129         sendCdToTerminal(url.toLocalFile());
 130     } else {
 131         m_mostLocalUrlJob = KIO::mostLocalUrl(url, KIO::HideProgressInfo);
 132         if (m_mostLocalUrlJob->ui()) {
 133             m_mostLocalUrlJob->ui()->setWindow(this);
 134         }
 135         connect(m_mostLocalUrlJob, SIGNAL(result(KJob*)), this, SLOT(slotMostLocalUrlResult(KJob*)));
 136     }
 137 }
 138
 139 void TerminalPanel::sendCdToTerminal(const QString& dir)
 140 {
 141     if (dir == m_konsolePartCurrentDirectory) {
 142         return;
 143     }
 144
 145     if (!m_clearTerminal) {
 146         // The TerminalV2 interface does not provide a way to delete the
 147         // current line before sending a new input. This is mandatory,
 148         // otherwise sending a 'cd x' to a existing 'rm -rf *' might
 149         // result in data loss. As workaround SIGINT is send.
 150         const int processId = m_terminal->terminalProcessId();
 151         if (processId > 0) {
 152             kill(processId, SIGINT);
 153         }
 154     }
 155
 156     m_terminal->sendInput("cd " + KShell::quoteArg(dir) + '\n');
 157
 158     if (m_clearTerminal) {
 159         m_terminal->sendInput("clear\n");
 160         m_clearTerminal = false;
 161     }
 162 }
 163
 164 void TerminalPanel::slotMostLocalUrlResult(KJob* job)
 165 {
 166     KIO::StatJob* statJob = static_cast<KIO::StatJob *>(job);
 167     const KUrl url = statJob->mostLocalUrl();
 168     if (url.isLocalFile()) {
 169         sendCdToTerminal(url.toLocalFile());
 170     }
 171
 172     m_mostLocalUrlJob = 0;
 173 }
 174
 175 void TerminalPanel::slotKonsolePartCurrentDirectoryChanged(const QString& dir)
 176 {
 177     m_konsolePartCurrentDirectory = dir;
 178
 179     const KUrl newUrl(dir);
 180     if (newUrl != url()) {
 181         emit changeUrl(newUrl);
 182     }
 183 }
 184
 185 #include "terminalpanel.moc"