src/panels/terminal/terminalpanel.cpp

   1 /*
   2  * SPDX-FileCopyrightText: 2007-2010 Peter Penz <peter.penz19@gmail.com>
   3  *
   4  * SPDX-License-Identifier: GPL-2.0-or-later
   5  */
   6
   7 #include "terminalpanel.h"
   8
   9 #include <KActionCollection>
  10 #include <KIO/DesktopExecParser>
  11 #include <KIO/Job>
  12 #include <KIO/JobUiDelegate>
  13 #include <KJobWidgets>
  14 #include <KLocalizedString>
  15 #include <KMessageWidget>
  16 #include <KMountPoint>
  17 #include <KParts/ReadOnlyPart>
  18 #include <KPluginFactory>
  19 #include <KProtocolInfo>
  20 #include <KShell>
  21 #include <KXMLGUIBuilder>
  22 #include <KXMLGUIFactory>
  23 #include <kde_terminal_interface.h>
  24
  25 #include <QAction>
  26 #include <QDesktopServices>
  27 #include <QDir>
  28 #include <QLabel>
  29 #include <QShowEvent>
  30 #include <QTimer>
  31 #include <QVBoxLayout>
  32
  33 TerminalPanel::TerminalPanel(QWidget* parent) :
  34     Panel(parent),
  35     m_clearTerminal(true),
  36     m_mostLocalUrlJob(nullptr),
  37     m_layout(nullptr),
  38     m_terminal(nullptr),
  39     m_terminalWidget(nullptr),
  40     m_konsolePartMissingMessage(nullptr),
  41     m_konsolePart(nullptr),
  42     m_konsolePartCurrentDirectory(),
  43     m_sendCdToTerminalHistory(),
  44     m_kiofuseInterface(QStringLiteral("org.kde.KIOFuse"),
  45                        QStringLiteral("/org/kde/KIOFuse"),
  46                        QDBusConnection::sessionBus())
  47 {
  48     m_layout = new QVBoxLayout(this);
  49     m_layout->setContentsMargins(0, 0, 0, 0);
  50 }
  51
  52 TerminalPanel::~TerminalPanel()
  53 {
  54 }
  55
  56 void TerminalPanel::goHome()
  57 {
  58     sendCdToTerminal(QDir::homePath(), HistoryPolicy::SkipHistory);
  59 }
  60
  61 QString TerminalPanel::currentWorkingDirectory()
  62 {
  63     if (m_terminal) {
  64         return m_terminal->currentWorkingDirectory();
  65     }
  66     return QString();
  67 }
  68
  69 void TerminalPanel::terminalExited()
  70 {
  71     m_terminal = nullptr;
  72     Q_EMIT hideTerminalPanel();
  73 }
  74
  75 bool TerminalPanel::isHiddenInVisibleWindow() const
  76 {
  77     return parentWidget()
  78         && parentWidget()->isHidden();
  79 }
  80
  81 void TerminalPanel::dockVisibilityChanged()
  82 {
  83     // Only react when the DockWidget itself (not some parent) is hidden. This way we don't
  84     // respond when e.g. Dolphin is minimized.
  85     if (isHiddenInVisibleWindow() && m_terminal && !hasProgramRunning()) {
  86         // Make sure that the following "cd /" command will not affect the view.
  87         disconnect(m_konsolePart, SIGNAL(currentDirectoryChanged(QString)),
  88                    this, SLOT(slotKonsolePartCurrentDirectoryChanged(QString)));
  89
  90         // Make sure this terminal does not prevent unmounting any removable drives
  91         changeDir(QUrl::fromLocalFile(QStringLiteral("/")));
  92
  93         // Because we have disconnected from the part's currentDirectoryChanged()
  94         // signal, we have to update m_konsolePartCurrentDirectory manually. If this
  95         // was not done, showing the panel again might not set the part's working
  96         // directory correctly.
  97         m_konsolePartCurrentDirectory = '/';
  98     }
  99 }
 100
 101 QString TerminalPanel::runningProgramName() const
 102 {
 103     return m_terminal ? m_terminal->foregroundProcessName() : QString();
 104 }
 105
 106 KActionCollection *TerminalPanel::actionCollection()
 107 {
 108     // m_terminal is the only reference reset to nullptr in case the terminal is
 109     // closed again
 110     if (m_terminal && m_konsolePart && m_terminalWidget) {
 111         const auto guiClients = m_konsolePart->childClients();
 112         for (auto *client : guiClients) {
 113             if (client->actionCollection()->associatedWidgets().contains(m_terminalWidget)) {
 114                 return client->actionCollection();
 115             }
 116         }
 117     }
 118     return nullptr;
 119 }
 120
 121 bool TerminalPanel::hasProgramRunning() const
 122 {
 123     return m_terminal && (m_terminal->foregroundProcessId() != -1);
 124 }
 125
 126 bool TerminalPanel::urlChanged()
 127 {
 128     if (!url().isValid()) {
 129         return false;
 130     }
 131
 132     const bool sendInput = m_terminal && !hasProgramRunning() && isVisible();
 133     if (sendInput) {
 134         changeDir(url());
 135     }
 136
 137     return true;
 138 }
 139
 140 void TerminalPanel::showEvent(QShowEvent* event)
 141 {
 142     if (event->spontaneous()) {
 143         Panel::showEvent(event);
 144         return;
 145     }
 146
 147     if (!m_terminal) {
 148         m_clearTerminal = true;
 149         KPluginFactory *factory = KPluginFactory::loadFactory(KPluginMetaData(QStringLiteral("konsolepart"))).plugin;
 150         m_konsolePart = factory ? (factory->create<KParts::ReadOnlyPart>(this)) : nullptr;
 151         if (m_konsolePart) {
 152             connect(m_konsolePart, &KParts::ReadOnlyPart::destroyed, this, &TerminalPanel::terminalExited);
 153             m_terminalWidget = m_konsolePart->widget();
 154             setFocusProxy(m_terminalWidget);
 155             m_layout->addWidget(m_terminalWidget);
 156             if (m_konsolePartMissingMessage) {
 157                 m_layout->removeWidget(m_konsolePartMissingMessage);
 158             }
 159             m_terminal = qobject_cast<TerminalInterface*>(m_konsolePart);
 160
 161             // needed to collect the correct KonsolePart actionCollection
 162             // namely the one of the single inner terminal and not the outer KonsolePart
 163             if (!m_konsolePart->factory() && m_terminalWidget) {
 164                 if (!m_konsolePart->clientBuilder()) {
 165                     m_konsolePart->setClientBuilder(new KXMLGUIBuilder(m_terminalWidget));
 166                 }
 167
 168                 auto factory = new KXMLGUIFactory(m_konsolePart->clientBuilder(), this);
 169                 factory->addClient(m_konsolePart);
 170
 171                 // Prevents the KXMLGui warning about removing the client
 172                 connect(m_terminalWidget, &QObject::destroyed, this, [factory, this] {
 173                     factory->removeClient(m_konsolePart);
 174                 });
 175             }
 176
 177         } else if (!m_konsolePartMissingMessage) {
 178             const auto konsoleInstallUrl = QUrl("appstream://org.kde.konsole.desktop");
 179             const auto konsoleNotInstalledText = i18n("Terminal cannot be shown because Konsole is not installed. "
 180                                                       "Please install it and then reopen the panel.");
 181             m_konsolePartMissingMessage = new KMessageWidget(konsoleNotInstalledText, this);
 182             m_konsolePartMissingMessage->setCloseButtonVisible(false);
 183             m_konsolePartMissingMessage->hide();
 184             if (KIO::DesktopExecParser::hasSchemeHandler(konsoleInstallUrl)) {
 185                 auto installKonsoleAction = new QAction(i18n("Install Konsole"), this);
 186                 connect(installKonsoleAction, &QAction::triggered, [konsoleInstallUrl]() {
 187                     QDesktopServices::openUrl(konsoleInstallUrl);
 188                 });
 189                 m_konsolePartMissingMessage->addAction(installKonsoleAction);
 190             }
 191             m_layout->addWidget(m_konsolePartMissingMessage);
 192             m_layout->addStretch();
 193             QTimer::singleShot(0, m_konsolePartMissingMessage, &KMessageWidget::animatedShow);
 194         } else {
 195             m_konsolePartMissingMessage->animatedShow();
 196         }
 197     }
 198     if (m_terminal) {
 199         m_terminal->showShellInDir(url().toLocalFile());
 200         if(!hasProgramRunning()) {
 201             changeDir(url());
 202         }
 203         m_terminalWidget->setFocus();
 204         connect(m_konsolePart, SIGNAL(currentDirectoryChanged(QString)),
 205                 this, SLOT(slotKonsolePartCurrentDirectoryChanged(QString)));
 206     }
 207
 208     Panel::showEvent(event);
 209 }
 210
 211 void TerminalPanel::changeDir(const QUrl& url)
 212 {
 213     delete m_mostLocalUrlJob;
 214     m_mostLocalUrlJob = nullptr;
 215
 216     if (url.isLocalFile()) {
 217         sendCdToTerminal(url.toLocalFile());
 218         return;
 219     }
 220
 221     // Try stat'ing the url; note that mostLocalUrl only works with ":local" protocols
 222     if (KProtocolInfo::protocolClass(url.scheme()) == QLatin1String(":local")) {
 223         m_mostLocalUrlJob = KIO::mostLocalUrl(url, KIO::HideProgressInfo);
 224         if (m_mostLocalUrlJob->uiDelegate()) {
 225             KJobWidgets::setWindow(m_mostLocalUrlJob, this);
 226         }
 227         connect(m_mostLocalUrlJob, &KIO::StatJob::result, this, &TerminalPanel::slotMostLocalUrlResult);
 228         return;
 229     }
 230
 231     // Last chance, try KIOFuse
 232     sendCdToTerminalKIOFuse(url);
 233 }
 234
 235 void TerminalPanel::sendCdToTerminal(const QString& dir, HistoryPolicy addToHistory)
 236 {
 237     if (dir == m_konsolePartCurrentDirectory) {
 238         m_clearTerminal = false;
 239         return;
 240     }
 241
 242 #ifndef Q_OS_WIN
 243     if (!m_clearTerminal) {
 244         // The TerminalV2 interface does not provide a way to delete the
 245         // current line before sending a new input. This is mandatory,
 246         // otherwise sending a 'cd x' to a existing 'rm -rf *' might
 247         // result in data loss. As workaround SIGINT is sent.
 248         const int processId = m_terminal->terminalProcessId();
 249         if (processId > 0) {
 250             kill(processId, SIGINT);
 251         }
 252     }
 253 #endif
 254
 255     m_terminal->sendInput(" cd " + KShell::quoteArg(dir) + '\n');
 256
 257     // We want to ignore the currentDirectoryChanged(QString) signal, which we will receive after
 258     // the directory change, because this directory change is not caused by a "cd" command that the
 259     // user entered in the panel. Therefore, we have to remember 'dir'. Note that it could also be
 260     // a symbolic link -> remember the 'canonical' path.
 261     if (addToHistory == HistoryPolicy::AddToHistory)
 262         m_sendCdToTerminalHistory.enqueue(QDir(dir).canonicalPath());
 263
 264     if (m_clearTerminal) {
 265         m_terminal->sendInput(QStringLiteral(" clear\n"));
 266         m_clearTerminal = false;
 267     }
 268 }
 269
 270 void TerminalPanel::sendCdToTerminalKIOFuse(const QUrl &url) {
 271     // URL isn't local, only hope for the terminal to be in sync with the
 272     // DolphinView is to mount the remote URL in KIOFuse and point to it.
 273     // If we can't do that for any reason, silently fail.
 274     auto reply = m_kiofuseInterface.mountUrl(url.toString());
 275     QDBusPendingCallWatcher * watcher = new QDBusPendingCallWatcher(reply, this);
 276     QObject::connect(watcher, &QDBusPendingCallWatcher::finished, this, [=] (QDBusPendingCallWatcher* watcher) {
 277         watcher->deleteLater();
 278         if (!reply.isError()) {
 279             // Successfully mounted, point to the KIOFuse equivalent path.
 280             sendCdToTerminal(reply.value());
 281         }
 282     });
 283 }
 284
 285 void TerminalPanel::slotMostLocalUrlResult(KJob* job)
 286 {
 287     KIO::StatJob* statJob = static_cast<KIO::StatJob *>(job);
 288     const QUrl url = statJob->mostLocalUrl();
 289     if (url.isLocalFile()) {
 290         sendCdToTerminal(url.toLocalFile());
 291     } else {
 292         sendCdToTerminalKIOFuse(url);
 293     }
 294
 295     m_mostLocalUrlJob = nullptr;
 296 }
 297
 298 void TerminalPanel::slotKonsolePartCurrentDirectoryChanged(const QString& dir)
 299 {
 300     m_konsolePartCurrentDirectory = QDir(dir).canonicalPath();
 301
 302     // Only emit a changeUrl signal if the directory change was caused by the user inside the
 303     // terminal, and not by sendCdToTerminal(QString).
 304     while (!m_sendCdToTerminalHistory.empty()) {
 305         if (m_konsolePartCurrentDirectory == m_sendCdToTerminalHistory.dequeue()) {
 306             return;
 307         }
 308     }
 309
 310     // User may potentially be browsing inside a KIOFuse mount.
 311     // If so lets try and change the DolphinView to point to the remote URL equivalent.
 312     // instead of into the KIOFuse mount itself (which can cause performance issues!)
 313     const QUrl url(QUrl::fromLocalFile(dir));
 314
 315     KMountPoint::Ptr mountPoint = KMountPoint::currentMountPoints().findByPath(m_konsolePartCurrentDirectory);
 316     if (mountPoint && mountPoint->mountType() != QStringLiteral("fuse.kio-fuse")) {
 317         // Not in KIOFUse mount, so just switch to the corresponding URL.
 318         Q_EMIT changeUrl(url);
 319         return;
 320     }
 321
 322     auto reply = m_kiofuseInterface.remoteUrl(m_konsolePartCurrentDirectory);
 323     QDBusPendingCallWatcher * watcher = new QDBusPendingCallWatcher(reply, this);
 324     QObject::connect(watcher, &QDBusPendingCallWatcher::finished, this, [=] (QDBusPendingCallWatcher* watcher) {
 325         watcher->deleteLater();
 326         if (reply.isError()) {
 327             // KIOFuse errored out... just show the normal URL
 328             Q_EMIT changeUrl(url);
 329         } else {
 330             // Our location happens to be in a KIOFuse mount and is mounted.
 331             // Let's change the DolphinView to point to the remote URL equivalent.
 332             Q_EMIT changeUrl(QUrl::fromUserInput(reply.value()));
 333         }
 334     });
 335 }
 336
 337 bool TerminalPanel::terminalHasFocus() const
 338 {
 339     if (m_terminalWidget) {
 340         return m_terminalWidget->hasFocus();
 341     }
 342
 343     return hasFocus();
 344 }