MythTV: logviewer.cpp Source File

00001 #include <unistd.h>
00002 #include <iostream>
00003 #include <cstdlib>
00004 
00005 using namespace std;
00006 
00007 // qt
00008 #include <qlayout.h>
00009 #include <qhbox.h>
00010 #include <qfile.h>
00011 
00012 // mythtv
00013 #include <mythtv/mythcontext.h>
00014 #include <mythtv/dialogbox.h>
00015 #include <mythtv/mythdialogs.h>
00016 #include <mythtv/mythdbcon.h>
00017 
00018 // mytharchive
00019 #include <logviewer.h>
00020 
00021 const int DEFAULT_UPDATE_TIME = 5;
00022 
00023 LogViewer::LogViewer(MythMainWindow *parent, const char *name)
00024               : MythDialog(parent, name)
00025 {
00026     m_updateTime = gContext->GetNumSetting("LogViewerUpdateTime", DEFAULT_UPDATE_TIME);
00027 
00028     QVBoxLayout *vbox = new QVBoxLayout(this, (int)(15 * wmult));
00029     QHBoxLayout *hbox = new QHBoxLayout(vbox, (int)(0 * wmult));
00030 
00031     // Window title
00032     QString message = tr("Log Viewer");
00033     QLabel *label = new QLabel(message, this);
00034     QFont font = label->font();
00035     font.setPointSize(int (font.pointSize() * 1.2));
00036     font.setBold(true);
00037     label->setFont(font);
00038     label->setPaletteForegroundColor(QColor("yellow"));
00039     label->setBackgroundOrigin(WindowOrigin);
00040     label->setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed));
00041     hbox->addWidget(label);
00042 
00043     hbox = new QHBoxLayout(vbox, (int)(10 * wmult));
00044     m_autoupdateCheck = new MythCheckBox( this );
00045     m_autoupdateCheck->setBackgroundOrigin(WindowOrigin);
00046     m_autoupdateCheck->setChecked(true);
00047     m_autoupdateCheck->setText("Auto Update Frequency");
00048     hbox->addWidget(m_autoupdateCheck);
00049 
00050     m_updateTimeSpin = new MythSpinBox( this );
00051     m_updateTimeSpin->setMinValue(1);
00052     m_updateTimeSpin->setValue(m_updateTime);
00053     hbox->addWidget(m_updateTimeSpin);
00054 
00055     message = tr("Seconds");
00056     label = new QLabel(message, this);
00057     label->setBackgroundOrigin(WindowOrigin);
00058     label->setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed));
00059     hbox->addWidget(label);
00060 
00061     // listbox
00062     hbox = new QHBoxLayout(vbox, (int)(10 * wmult));
00063 
00064     m_listbox = new MythListBox( this );
00065     m_listbox->setBackgroundOrigin(WindowOrigin);
00066     m_listbox->setEnabled(true);
00067     font = m_listbox->font();
00068     font.setPointSize(gContext->GetNumSetting("LogViewerFontSize", 13));
00069     font.setBold(false);
00070     m_listbox->setFont(font);
00071     hbox->addWidget(m_listbox);
00072 
00073 
00074     hbox = new QHBoxLayout(vbox, (int)(10 * wmult));
00075 
00076     //  cancel Button
00077     hbox = new QHBoxLayout(vbox, (int)(10 * wmult));
00078 
00079     m_cancelButton = new MythPushButton( this, "cancel" );
00080     m_cancelButton->setBackgroundOrigin(WindowOrigin);
00081     m_cancelButton->setText( tr( "Cancel" ) );
00082     m_cancelButton->setEnabled(true);
00083 
00084     hbox->addWidget(m_cancelButton);
00085 
00086     //  update Button
00087     m_updateButton = new MythPushButton( this, "update" );
00088     m_updateButton->setBackgroundOrigin(WindowOrigin);
00089     m_updateButton->setText( tr( "Update" ) );
00090     m_updateButton->setEnabled(true);
00091     m_updateButton->setFocus();
00092 
00093     hbox->addWidget(m_updateButton);
00094 
00095     // exit button
00096     m_exitButton = new MythPushButton( this, "exit" );
00097     m_exitButton->setBackgroundOrigin(WindowOrigin);
00098     m_exitButton->setText( tr( "Exit" ) );
00099     m_exitButton->setEnabled(true);
00100 
00101     hbox->addWidget(m_exitButton);
00102 
00103     connect(m_exitButton, SIGNAL(clicked()), this, SLOT(reject()));
00104     connect(m_cancelButton, SIGNAL(clicked()), this, SLOT(cancelClicked()));
00105     connect(m_updateButton, SIGNAL(clicked()), this, SLOT(updateClicked()));
00106     connect(m_autoupdateCheck, SIGNAL(toggled(bool)), this, SLOT(toggleAutoUpdate(bool)));
00107     connect(m_updateTimeSpin, SIGNAL(valueChanged(int)), 
00108             this, SLOT(updateTimeChanged(int)));
00109 
00110     m_updateTimer = NULL;
00111     m_updateTimer = new QTimer(this);
00112     connect(m_updateTimer, SIGNAL(timeout()), SLOT(updateTimerTimeout()) );
00113     m_updateTimer->start(500);
00114 
00115     m_popupMenu = NULL;
00116 }
00117 
00118 LogViewer::~LogViewer(void)
00119 {
00120     gContext->SaveSetting("LogViewerUpdateTime", m_updateTime);
00121     gContext->SaveSetting("LogViewerFontSize", m_listbox->font().pointSize());
00122 
00123     if (m_updateTimer)
00124         delete m_updateTimer;
00125 }
00126 
00127 void LogViewer::updateTimerTimeout()
00128 {
00129     updateClicked();
00130 }
00131 
00132 void LogViewer::toggleAutoUpdate(bool checked)
00133 {
00134     if (checked)
00135     {
00136         m_updateTimeSpin->setEnabled(true);
00137         m_updateTimer->start(m_updateTime * 1000);
00138     }
00139     else
00140     {
00141         m_updateTimeSpin->setEnabled(false);
00142         m_updateTimer->stop();
00143     }
00144 }
00145 
00146 void LogViewer::updateTimeChanged(int value)
00147 {
00148     m_updateTime = value;
00149     m_updateTimer->stop();
00150     m_updateTimer->changeInterval(value * 1000);
00151 }
00152 
00153 void LogViewer::cancelClicked(void)
00154 {
00155     QString tempDir = gContext->GetSetting("MythArchiveTempDir", "");
00156 
00157     system("echo Cancel > " + tempDir + "/logs/mythburncancel.lck" );
00158 
00159     MythPopupBox::showOkPopup(gContext->GetMainWindow(), 
00160         QObject::tr("Myth Burn"),
00161         QObject::tr("Background creation has been asked to stop.\n" 
00162                                 "This may take a few minutes."));
00163 }
00164 
00165 void LogViewer::updateClicked(void)
00166 {
00167     m_updateTimer->stop();
00168 
00169     QStringList list;
00170     loadFile(m_currentLog, list, m_listbox->count());
00171 
00172     if (list.count() > 0)
00173     {
00174         bool bUpdateCurrent = m_listbox->currentItem() == (int) m_listbox->count() - 1;
00175         m_listbox->insertStringList(list);
00176         if (bUpdateCurrent)
00177             m_listbox->setCurrentItem(m_listbox->count() - 1);
00178     }
00179 
00180     bool bRunning = (getSetting("MythArchiveLastRunStatus") == "Running");
00181     m_cancelButton->setEnabled(bRunning);
00182     m_updateButton->setEnabled(bRunning);
00183 
00184     if (m_autoupdateCheck->isChecked())
00185         m_updateTimer->start(m_updateTime * 1000);
00186 }
00187 
00188 QString LogViewer::getSetting(const QString &key)
00189 {
00190     // read the setting direct from the DB rather than from the settings cache 
00191     // which isn't aware that the script may have changed something
00192     MSqlQuery query(MSqlQuery::InitCon());
00193     if (query.isConnected())
00194     {
00195         query.prepare("SELECT data FROM settings WHERE value = :VALUE "
00196                 "AND hostname = :HOSTNAME ;");
00197         query.bindValue(":VALUE", key);
00198         query.bindValue(":HOSTNAME", gContext->GetHostName());
00199 
00200         if (query.exec() && query.isActive() && query.size() > 0)
00201         {
00202             query.next();
00203             return query.value(0).toString();
00204         }
00205     }
00206     else
00207     {
00208         VERBOSE(VB_IMPORTANT, 
00209                 QString("Database not open while trying to load setting: %1")
00210                         .arg(key));
00211     }
00212 
00213     return QString("");
00214 }
00215 
00216 bool LogViewer::loadFile(QString filename, QStringList &list, int startline)
00217 {
00218     list.clear();
00219 
00220     QFile file(filename);
00221 
00222     if (!file.exists())
00223         return false;
00224 
00225     if (file.open( IO_ReadOnly ))
00226     {
00227         QString s;
00228         QTextStream stream(&file);
00229 
00230          // ignore the first startline lines
00231         while ( !stream.atEnd() && startline > 0)
00232         {
00233             stream.readLine();
00234             startline--;
00235         }
00236 
00237          // read rest of file
00238         while ( !stream.atEnd() )
00239         {
00240             s = stream.readLine();
00241             list.append(s);
00242         }
00243         file.close();
00244     }
00245     else
00246         return false;
00247 
00248     return true;
00249 }
00250 
00251 void LogViewer::keyPressEvent(QKeyEvent *e)
00252 {
00253     bool handled = false;
00254     QStringList actions;
00255     if (gContext->GetMainWindow()->TranslateKeyPress("qt", e, actions))
00256     {
00257         for (unsigned int i = 0; i < actions.size() && !handled; i++)
00258         {
00259             QString action = actions[i];
00260             if (action == "1")
00261             {
00262                 handled = true;
00263                 decreaseFontSize();
00264             }
00265             else if (action == "2")
00266             {
00267                 handled = true;
00268                 increaseFontSize();
00269             }
00270             else if (action == "3")
00271             {
00272                 handled = true;
00273                 showProgressLog();
00274             }
00275             else if (action == "4")
00276             {
00277                 handled = true;
00278                 showFullLog();
00279             }
00280             else if (action == "MENU")
00281             {
00282                 handled = true;
00283                 showMenu();
00284             }
00285         }
00286     }
00287 
00288     if (!handled)
00289         MythDialog::keyPressEvent(e);
00290 }
00291 
00292 void LogViewer::increaseFontSize(void)
00293 {
00294     closePopupMenu();
00295 
00296     QFont font = m_listbox->font();
00297     font.setPointSize(font.pointSize() + 1);
00298     m_listbox->setFont(font);
00299 }
00300 
00301 void LogViewer::decreaseFontSize(void)
00302 {
00303     closePopupMenu();
00304 
00305     QFont font = m_listbox->font();
00306     font.setPointSize(font.pointSize() - 1);
00307     m_listbox->setFont(font);
00308 }
00309 
00310 void LogViewer::setFilenames(const QString &progressLog, const QString &fullLog)
00311 {
00312     m_progressLog = progressLog;
00313     m_fullLog = fullLog;
00314     m_currentLog = progressLog;
00315 }
00316 
00317 void LogViewer::showProgressLog(void)
00318 {
00319     closePopupMenu();
00320 
00321     m_listbox->clear();
00322     m_currentLog = m_progressLog;
00323     updateClicked();
00324 }
00325 
00326 void LogViewer::showFullLog(void)
00327 {
00328     closePopupMenu();
00329 
00330     m_listbox->clear();
00331     m_currentLog = m_fullLog;
00332     updateClicked();
00333 }
00334 
00335 void LogViewer::showMenu()
00336 {
00337     if (m_popupMenu)
00338         return;
00339 
00340     m_popupMenu = new MythPopupBox(gContext->GetMainWindow(),
00341                                       "logviewer menu");
00342 
00343     QButton *button = m_popupMenu->addButton(tr("Increase Font Size"), this,
00344             SLOT(increaseFontSize()));
00345 
00346     m_popupMenu->addButton(tr("Decrease Font Size"), this,
00347                               SLOT(decreaseFontSize()));
00348 
00349     m_popupMenu->addButton(tr("Show Progress Log"), this,
00350                               SLOT(showProgressLog()));
00351     m_popupMenu->addButton(tr("Show Full Log"), this,
00352                            SLOT(showFullLog()));
00353     m_popupMenu->addButton(tr("Cancel"), this,
00354                            SLOT(closePopupMenu()));
00355     m_popupMenu->ShowPopup(this, SLOT(closePopupMenu()));
00356 
00357     button->setFocus();
00358 }
00359 
00360 void LogViewer::closePopupMenu()
00361 {
00362     if (!m_popupMenu)
00363         return;
00364 
00365     m_popupMenu->deleteLater();
00366     m_popupMenu = NULL;
00367 }