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 <KService>
  27 #include <kde_terminal_interface_v2.h>
  28 #include <KParts/Part>
  29 #include <KShell>
  30 #include <KIO/Job>
  31 #include <KIO/JobUiDelegate>
  32
  33 #include <QBoxLayout>
  34 #include <QShowEvent>
  35
  36 TerminalPanel::TerminalPanel(QWidget* parent) :
  37     Panel(parent),
  38     m_clearTerminal(true),
  39     m_mostLocalUrlJob(0),
  40     m_layout(0),
  41     m_terminal(0),
  42     m_terminalWidget(0),
  43     m_konsolePart(0),
  44     m_konsolePartCurrentDirectory()
  45 {
  46     m_layout = new QVBoxLayout(this);
  47     m_layout->setMargin(0);
  48 }
  49
  50 TerminalPanel::~TerminalPanel()
  51 {
  52 }
  53
  54 void TerminalPanel::terminalExited()
  55 {
  56     m_terminal = 0;
  57     emit hideTerminalPanel();
  58 }
  59
  60 void TerminalPanel::dockVisibilityChanged()
  61 {
  62     // Only react when the DockWidget itself (not some parent) is hidden. This way we don't
  63     // respond when e.g. Dolphin is minimized.
  64     if (parentWidget() && parentWidget()->isHidden() &&
  65         m_terminal && (m_terminal->foregroundProcessId() == -1)) {
  66         // Make sure that the following "cd /" command will not affect the view.
  67         disconnect(m_konsolePart, SIGNAL(currentDirectoryChanged(QString)),
  68                    this, SLOT(slotKonsolePartCurrentDirectoryChanged(QString)));
  69
  70         // Make sure this terminal does not prevent unmounting any removable drives
  71         changeDir(KUrl::fromPath("/"));
  72
  73         // Because we have disconnected from the part's currentDirectoryChanged()
  74         // signal, we have to update m_konsolePartCurrentDirectory manually. If this
  75         // was not done, showing the panel again might not set the part's working
  76         // directory correctly.
  77         m_konsolePartCurrentDirectory = '/';
  78     }
  79 }
  80
  81 bool TerminalPanel::urlChanged()
  82 {
  83     if (!url().isValid()) {
  84         return false;
  85     }
  86
  87     const bool sendInput = m_terminal && (m_terminal->foregroundProcessId() == -1) && isVisible();
  88     if (sendInput) {
  89         changeDir(url());
  90     }
  91
  92     return true;
  93 }
  94
  95 void TerminalPanel::showEvent(QShowEvent* event)
  96 {
  97     if (event->spontaneous()) {
  98         Panel::showEvent(event);
  99         return;
 100     }
 101
 102     if (!m_terminal) {
 103         m_clearTerminal = true;
 104         KPluginFactory* factory = 0;
 105         KService::Ptr service = KService::serviceByDesktopName("konsolepart");
 106         if (service) {
 107             factory = KPluginLoader(service->library()).factory();
 108         }
 109         m_konsolePart = factory ? (factory->create<KParts::ReadOnlyPart>(this)) : 0;
 110         if (m_konsolePart) {
 111             connect(m_konsolePart, SIGNAL(destroyed(QObject*)), this, SLOT(terminalExited()));
 112             m_terminalWidget = m_konsolePart->widget();
 113             m_layout->addWidget(m_terminalWidget);
 114             m_terminal = qobject_cast<TerminalInterfaceV2 *>(m_konsolePart);
 115         }
 116     }
 117     if (m_terminal) {
 118         connect(m_konsolePart, SIGNAL(currentDirectoryChanged(QString)),
 119                 this, SLOT(slotKonsolePartCurrentDirectoryChanged(QString)));
 120         m_terminal->showShellInDir(url().toLocalFile());
 121         changeDir(url());
 122         m_terminalWidget->setFocus();
 123     }
 124
 125     Panel::showEvent(event);
 126 }
 127
 128 void TerminalPanel::changeDir(const KUrl& url)
 129 {
 130     delete m_mostLocalUrlJob;
 131     m_mostLocalUrlJob = 0;
 132
 133     if (url.isLocalFile()) {
 134         sendCdToTerminal(url.toLocalFile());
 135     } else {
 136         m_mostLocalUrlJob = KIO::mostLocalUrl(url, KIO::HideProgressInfo);
 137         if (m_mostLocalUrlJob->ui()) {
 138             m_mostLocalUrlJob->ui()->setWindow(this);
 139         }
 140         connect(m_mostLocalUrlJob, SIGNAL(result(KJob*)), this, SLOT(slotMostLocalUrlResult(KJob*)));
 141     }
 142 }
 143
 144 void TerminalPanel::sendCdToTerminal(const QString& dir)
 145 {
 146     if (dir == m_konsolePartCurrentDirectory) {
 147         m_clearTerminal = false;
 148         return;
 149     }
 150
 151     if (!m_clearTerminal) {
 152         // The TerminalV2 interface does not provide a way to delete the
 153         // current line before sending a new input. This is mandatory,
 154         // otherwise sending a 'cd x' to a existing 'rm -rf *' might
 155         // result in data loss. As workaround SIGINT is send.
 156         const int processId = m_terminal->terminalProcessId();
 157         if (processId > 0) {
 158             kill(processId, SIGINT);
 159         }
 160     }
 161
 162     m_terminal->sendInput(" cd " + KShell::quoteArg(dir) + '\n');
 163     m_konsolePartCurrentDirectory = dir;
 164
 165     if (m_clearTerminal) {
 166         m_terminal->sendInput(" clear\n");
 167         m_clearTerminal = false;
 168     }
 169 }
 170
 171 void TerminalPanel::slotMostLocalUrlResult(KJob* job)
 172 {
 173     KIO::StatJob* statJob = static_cast<KIO::StatJob *>(job);
 174     const KUrl url = statJob->mostLocalUrl();
 175     if (url.isLocalFile()) {
 176         sendCdToTerminal(url.toLocalFile());
 177     }
 178
 179     m_mostLocalUrlJob = 0;
 180 }
 181
 182 void TerminalPanel::slotKonsolePartCurrentDirectoryChanged(const QString& dir)
 183 {
 184     m_konsolePartCurrentDirectory = dir;
 185
 186     const KUrl newUrl(dir);
 187     if (newUrl != url()) {
 188         emit changeUrl(newUrl);
 189     }
 190 }
 191
 192 #include "terminalpanel.moc"