cxConsoleWidget.cpp

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.
                 
Copyright (c) SINTEF Department of Medical Technology.
All rights reserved.
                 
CustusX is released under a BSD 3-Clause license.
                 
See Lisence.txt (https://github.com/SINTEFMedtek/CustusX/blob/master/License.txt) for details.
=========================================================================*/


#include "cxConsoleWidget.h"

#include <iostream>
#include <QVBoxLayout>
#include <QMenu>
#include <QScrollBar>
#include <QContextMenuEvent>
#include "cxSettings.h"
#include "cxStringProperty.h"
#include "cxHelperWidgets.h"
#include "cxLabeledComboBoxWidget.h"
#include "cxMessageListener.h"
#include "cxUtilHelpers.h"
#include <QTimer>
#include <QThread>
#include <QTableWidget>
#include "cxLogMessageFilter.h"
#include <QHeaderView>
#include <QStackedLayout>
#include <QApplication>
#include <QClipboard>
#include "cxNullDeleter.h"
#include <QPushButton>
#include "cxProfile.h"
#include "cxTime.h"
#include "cxPopupToolbarWidget.h"
#include "cxEnumConversion.h"

namespace cx
{

LogMessageDisplayWidget::LogMessageDisplayWidget(QWidget *parent)
{
        this->createTextCharFormats(); 
}

void LogMessageDisplayWidget::createTextCharFormats()
{
        mFormat[mlINFO].setForeground(Qt::black);
        mFormat[mlSUCCESS].setForeground(QColor(60, 179, 113)); // medium sea green
        mFormat[mlWARNING].setForeground(QColor(255, 140, 0)); //dark orange
        mFormat[mlERROR].setForeground(Qt::red);
        mFormat[mlDEBUG].setForeground(QColor(135, 206, 250)); //sky blue
        mFormat[mlCERR].setForeground(Qt::red);
        mFormat[mlCOUT].setForeground(Qt::darkGray);
}


class MyTableWidget : public QTableWidget
{
public:
        MyTableWidget(QWidget* parent=NULL) : QTableWidget(parent) {}
        virtual ~MyTableWidget() {}
        virtual void keyPressEvent(QKeyEvent* event);
};

//source: http://stackoverflow.com/questions/3135737/copying-part-of-qtableview
void MyTableWidget::keyPressEvent(QKeyEvent* event)
{
        // If Ctrl-C typed
        // Or use event->matches(QKeySequence::Copy)
        if (event->key() == Qt::Key_C && (event->modifiers() & Qt::ControlModifier))
        {
                QModelIndexList cells = selectedIndexes();
                qSort(cells); // Necessary, otherwise they are in column order

                QString text;
                int currentRow = 0; // To determine when to insert newlines
                foreach (const QModelIndex& cell, cells) {
                        if (text.length() == 0) {
                                // First item
                        } else if (cell.row() != currentRow) {
                                // New row
                                text += '\n';
                        } else {
                                // Next cell
                                text += '\t';
                        }
                        currentRow = cell.row();
                        text += cell.data().toString();
                }

                QApplication::clipboard()->setText(text);
        }
        else
        {
                event->ignore();
        }

        QTableWidget::keyPressEvent(event);
}


DetailedLogMessageDisplayWidget::DetailedLogMessageDisplayWidget(QWidget *parent, XmlOptionFile options) :
        LogMessageDisplayWidget(parent),
        mOptions(options),
        mScrollToBottomEnabled(true)
{
        mTable = new MyTableWidget(this);
        QVBoxLayout* layout = new QVBoxLayout(this);
        layout->setMargin(0);
        this->setLayout(layout);
        layout->addWidget(mTable);

        mTable->setShowGrid(false);
        mTable->setTextElideMode(Qt::ElideLeft);
        mTable->setWordWrap(false);

        mTable->setColumnCount(6);
        mTable->setRowCount(0);
        mTable->setHorizontalHeaderLabels(QStringList() << "time" << "source" << "function" << "thread" << "level" << "description");
        mTable->setSelectionBehavior(QAbstractItemView::SelectRows);
        mTable->verticalHeader()->hide();

        QFontMetrics metric(this->font());
        mTable->setColumnWidth(0, metric.width("00:00:00.000xx"));
        mTable->setColumnWidth(1, metric.width("cxSourceFile.cpp:333xx"));
        mTable->setColumnWidth(2, metric.width("function()xx"));
        mTable->setColumnWidth(3, metric.width("mainxx"));
        mTable->setColumnWidth(4, metric.width("WARNINGxx"));
        mTable->horizontalHeader()->setStretchLastSection(true);

        for (int i=0; i<mTable->horizontalHeader()->count(); ++i)
        {
                XmlOptionItem headerItem("headerwidth_"+QString::number(i), mOptions.getElement());
                int value = headerItem.readValue("-1").toInt();
                if (value<0)
                        continue;
                mTable->setColumnWidth(i, value);
        }

        int textLineHeight = metric.lineSpacing();
        mTable->verticalHeader()->setDefaultSectionSize(textLineHeight);
}

DetailedLogMessageDisplayWidget::~DetailedLogMessageDisplayWidget()
{
        for (int i=0; i<mTable->horizontalHeader()->count(); ++i)
        {
                XmlOptionItem headerItem("headerwidth_"+QString::number(i), mOptions.getElement());
                headerItem.writeValue(QString::number(mTable->columnWidth(i)));
        }
}

void DetailedLogMessageDisplayWidget::clear()
{
        mTable->setRowCount(0);
}

void DetailedLogMessageDisplayWidget::normalize()
{
        mTable->horizontalScrollBar()->setValue(mTable->horizontalScrollBar()->minimum());
}

void DetailedLogMessageDisplayWidget::add(const Message& message)
{
        int row = mTable->rowCount();
        mTable->insertRow(row);

        QString timestamp = message.getTimeStamp().toString("hh:mm:ss.zzz");
        this->addItem(0, timestamp, message);

        QString source;
        if (!message.mSourceFile.isEmpty())
                source = QString("%1:%2").arg(message.mSourceFile).arg(message.mSourceLine);
        this->addItem(1, source, message);

        QString function = message.mSourceFunction;
        this->addItem(2, function, message);

        QString thread = message.mThread;
        this->addItem(3, thread, message);

        QString level = enum2string(message.getMessageLevel());
        this->addItem(4, level, message);

        QString desc = message.getText();
        this->addItem(5, desc, message);

        this->scrollToBottom();
}

void DetailedLogMessageDisplayWidget::setScrollToBottom(bool on)
{
        mScrollToBottomEnabled = on;
        this->scrollToBottom();
}

void DetailedLogMessageDisplayWidget::showHeader(bool on)
{
        mTable->horizontalHeader()->setVisible(on);
}

void DetailedLogMessageDisplayWidget::scrollToBottom()
{
        if (mScrollToBottomEnabled)
                QTimer::singleShot(0, mTable, SLOT(scrollToBottom()));
}

QTableWidgetItem* DetailedLogMessageDisplayWidget::addItem(int column, QString text, const Message& message)
{
        int row = mTable->rowCount();

        QTableWidgetItem* item = new QTableWidgetItem(text);
        item->setStatusTip(text);
        item->setToolTip(text);
        item->setForeground(mFormat[message.getMessageLevel()].foreground());
        item->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);
        mTable->setItem(row-1, column, item);
        return item;
}


SimpleLogMessageDisplayWidget::SimpleLogMessageDisplayWidget(QWidget *parent) :
        LogMessageDisplayWidget(parent),
        mScrollToBottomEnabled(true)
{
        mBrowser = new QTextBrowser(this);
        mBrowser->setReadOnly(true);
        mBrowser->setLineWrapMode(QTextEdit::NoWrap);
        QVBoxLayout* layout = new QVBoxLayout(this);
        layout->setMargin(0);
        this->setLayout(layout);
        layout->addWidget(mBrowser);
        this->scrollToBottom();
}

void SimpleLogMessageDisplayWidget::clear()
{
        mBrowser->clear();
        this->scrollToBottom();
}

void SimpleLogMessageDisplayWidget::normalize()
{
        mBrowser->horizontalScrollBar()->setValue(mBrowser->horizontalScrollBar()->minimum());
}

void SimpleLogMessageDisplayWidget::add(const Message& message)
{
        this->format(message);

        mBrowser->append(this->getCompactMessage(message));

        this->scrollToBottom();
}

void SimpleLogMessageDisplayWidget::setScrollToBottom(bool on)
{
        mScrollToBottomEnabled = on;
        this->scrollToBottom();
}

void SimpleLogMessageDisplayWidget::scrollToBottom()
{
        if (mScrollToBottomEnabled)
                mBrowser->verticalScrollBar()->setValue(mBrowser->verticalScrollBar()->maximum());
}

QString SimpleLogMessageDisplayWidget::getCompactMessage(Message message)
{
        if(message.mMessageLevel == mlRAW)
                return message.mText;

        QString retval;
        retval= QString("[%1] %2")
//                      .arg(message.mTimeStamp.toString(timestampSecondsFormatNice()))
                        .arg(message.mTimeStamp.toString("hh:mm"))
                        .arg(message.mText);
        return retval;
}

void SimpleLogMessageDisplayWidget::format(const Message& message)
{
        if (!mFormat.count(message.getMessageLevel()))
                return;
        mBrowser->setCurrentCharFormat(mFormat[message.getMessageLevel()]);
}


ConsoleWidget::ConsoleWidget(QWidget* parent, QString uid, QString name, XmlOptionFile options, LogPtr log) :
        BaseWidget(parent, uid, name),
  mSeverityAction(NULL),
  mMessagesWidget(NULL),
  mMessagesLayout(NULL),
  mDetailsAction(NULL)
{
        mOptions = options;
        mLog = log;
        connect(mLog.get(), &Log::loggingFolderChanged, this, &ConsoleWidget::onLoggingFolderChanged);

        this->setModified();
}

ConsoleWidget::ConsoleWidget(QWidget* parent, QString uid, QString name) :
        BaseWidget(parent, uid, name),
        mSeverityAction(NULL),
        mMessagesWidget(NULL),
        mMessagesLayout(NULL),
        mDetailsAction(NULL)
{
        mOptions = profile()->getXmlSettings().descend(this->objectName());
        mLog = reporter();
        connect(mLog.get(), &Log::loggingFolderChanged, this, &ConsoleWidget::onLoggingFolderChanged);

        this->setModified();
}

void ConsoleWidget::prePaintEvent()
{
        if (!mMessagesLayout)
        {
                this->createUI();
        }

}

void ConsoleWidget::createUI()
{
        mSeverityAction = NULL;
        mMessagesWidget = NULL;

        this->setToolTip("Display system information, warnings and errors.");

        QVBoxLayout* layout = new QVBoxLayout;
        layout->setMargin(0);
        layout->setSpacing(0);
        this->setLayout(layout);

        mPopupWidget = new PopupToolbarWidget(this);
        connect(mPopupWidget, &PopupToolbarWidget::popup, this, &ConsoleWidget::updateShowHeader);
        layout->addWidget(mPopupWidget);
        this->createButtonWidget(mPopupWidget->getToolbar());

        mMessagesLayout = new QVBoxLayout;
        mMessagesLayout->setMargin(0);
        layout->addLayout(mMessagesLayout);

        mMessageListener = MessageListener::create(mLog);
        mMessageFilter.reset(new MessageFilterConsole);
        mMessageListener->installFilter(mMessageFilter);
        connect(mMessageListener.get(), &MessageListener::newMessage, this, &ConsoleWidget::receivedMessage);
        connect(mMessageListener.get(), &MessageListener::newChannel, this, &ConsoleWidget::receivedChannel);

        QString defVal = enum2string<LOG_SEVERITY>(msINFO);
        LOG_SEVERITY value = string2enum<LOG_SEVERITY>(this->option("showLevel").readValue(defVal));
        mMessageFilter->setLowestSeverity(value);

        mMessageFilter->setActiveChannel(mChannelSelector->getValue());
        mMessageListener->installFilter(mMessageFilter);

        this->updateUI();
}

void ConsoleWidget::createButtonWidget(QWidget* widget)
{
        QHBoxLayout* buttonLayout = new QHBoxLayout(widget);
        buttonLayout->setMargin(0);
        buttonLayout->setSpacing(0);

        this->addSeverityButtons(buttonLayout);
        buttonLayout->addSpacing(8);
        this->addDetailsButton(buttonLayout);

        this->createChannelSelector();

        LabeledComboBoxWidget* channelSelectorWidget = new LabeledComboBoxWidget(this, mChannelSelector);
        channelSelectorWidget->showLabel(false);
        buttonLayout->addSpacing(8);
        buttonLayout->addWidget(channelSelectorWidget);
        buttonLayout->setStretch(buttonLayout->count()-1, 0);

        buttonLayout->addStretch(1);
}

void ConsoleWidget::updateShowHeader()
{
        bool show = mPopupWidget->popupIsVisible();
        mMessagesWidget->showHeader(show);
}


XmlOptionItem ConsoleWidget::option(QString name)
{
        return XmlOptionItem(name, mOptions.getElement());
}

ConsoleWidget::~ConsoleWidget()
{
        if (!mMessageFilter)
                return;

        QString levelString = enum2string<LOG_SEVERITY>(mMessageFilter->getLowestSeverity());
        this->option("showLevel").writeValue(levelString);
        this->option("showDetails").writeVariant(mDetailsAction->isChecked());
}

void ConsoleWidget::setDetails(bool on)
{
        if (mDetailsAction)
        {
                mDetailsAction->setChecked(on);
                this->updateUI();
        }
        else
        {
                this->option("showDetails").writeVariant(on);
        }
}

void ConsoleWidget::addSeverityButtons(QBoxLayout* buttonLayout)
{
        QAction* actionUp = this->createAction(this,
                                                                                 QIcon(":/icons/open_icon_library/zoom-in-3.png"),
                                                                                 "More", "More detailed log output",
                                                                                 SLOT(onSeverityDown()),
                                                                                 buttonLayout, new CXSmallToolButton());

        this->addSeverityIndicator(buttonLayout);

        QAction* actionDown = this->createAction(this,
                                                                                 QIcon(":/icons/open_icon_library/zoom-out-3.png"),
                                                                                         "Less ", "Less detailed log output",
                                                                                   SLOT(onSeverityUp()),
                                                                                 buttonLayout, new CXSmallToolButton());
}

void ConsoleWidget::addSeverityIndicator(QBoxLayout* buttonLayout)
{
        QAction* action = new QAction(QIcon(""), "Severity", this);
        mSeverityAction = action;
        QString help = "Lowest displayed log severity";
        action->setStatusTip(help);
        action->setWhatsThis(help);
        action->setToolTip(help);
        QToolButton* button = new CXSmallToolButton();
        button->setDefaultAction(action);
        buttonLayout->addWidget(button);
}

void ConsoleWidget::updateSeverityIndicator()
{
        LOG_SEVERITY severity = mMessageFilter->getLowestSeverity();

        switch (severity)
        {
        case msERROR:
                this->updateSeverityIndicator("window-close-3.png", "error");
                break;
        case msWARNING:
                this->updateSeverityIndicator("dialog-warning-panel.png", "warning");
                break;
        case msINFO:
                this->updateSeverityIndicator("dialog-information-4.png", "info");
                break;
        case msDEBUG:
                this->updateSeverityIndicator("script-error.png", "debug");
                break;
        default:
                this->updateSeverityIndicator("script-error.png", "");
                break;
        }
}

void ConsoleWidget::updateSeverityIndicator(QString iconname, QString help)
{
        QIcon icon(QString(":/icons/message_levels/%1").arg(iconname));
        mSeverityAction->setIcon(icon);

        help = QString("Current log level is %1").arg(help);
        mSeverityAction->setStatusTip(help);
        mSeverityAction->setToolTip(help);
}

void ConsoleWidget::onSeverityUp()
{
        this->onSeverityChange(-1);
}

void ConsoleWidget::onSeverityDown()
{
        this->onSeverityChange(+1);
}

void ConsoleWidget::onSeverityChange(int delta)
{
        LOG_SEVERITY severity = mMessageFilter->getLowestSeverity();
        int val = (int)severity + delta;
        val = constrainValue(val, 0, int(msCOUNT)-1);
        severity = static_cast<LOG_SEVERITY>(val);

        mMessageFilter->setLowestSeverity(severity);
        mMessageListener->installFilter(mMessageFilter);
        this->updateUI();
}

void ConsoleWidget::createChannelSelector()
{
        QString defval = "console";
        mChannels << "all";
        mChannels << defval;

        StringPropertyPtr retval;
        retval = StringProperty::initialize("ChannelSelector",
                                                                                          "", "Log Channel to display",
                                                                                          defval, mChannels, mOptions.getElement());
        connect(retval.get(), &StringPropertyBase::changed, this, &ConsoleWidget::onChannelSelectorChanged);
        mChannelSelector = retval;
}

void ConsoleWidget::addDetailsButton(QBoxLayout* buttonLayout)
{
        QIcon icon(":/icons/open_icon_library/system-run-5.png");
        QAction* action = this->createAction(this,
                                                                                 icon,
                                                                                 "Details", "Show detailed info on each log entry",
                                                                                 SLOT(updateUI()),
                                                                                 buttonLayout, new CXSmallToolButton());
        action->setCheckable(true);

        bool value = this->option("showDetails").readVariant(false).toBool();
        action->blockSignals(true);
        action->setChecked(value);
        action->blockSignals(false);

        mDetailsAction = action;
}

void ConsoleWidget::updateUI()
{
        this->updateSeverityIndicator();

        this->setWindowTitle("Console: " + mChannelSelector->getValue());
        this->selectMessagesWidget();
        this->updateShowHeader();
        mPopupWidget->refresh();

        // reset content of browser
        QTimer::singleShot(0, this, SLOT(clearTable())); // let the messages recently emitted be processed before clearing

        mMessageListener->restart();
}

void ConsoleWidget::selectMessagesWidget()
{
        if (mMessagesWidget && (mMessagesWidget->getType()==this->getDetailTypeFromButton()))
                return;

        if (mMessagesWidget)
        {
                // remove
                mMessagesLayout->takeAt(0);
                delete mMessagesWidget;
        }

        if (this->getDetailTypeFromButton()=="detail")
        {
                mMessagesWidget = new DetailedLogMessageDisplayWidget(this, mOptions);
        }
        else
        {
                mMessagesWidget = new SimpleLogMessageDisplayWidget(this);
        }

        mMessagesLayout->addWidget(mMessagesWidget);
}

QString ConsoleWidget::getDetailTypeFromButton() const
{
        if (mDetailsAction->isChecked())
                return "detail";
        else
                return "simple";
}

void ConsoleWidget::clearTable()
{
        if (mMessagesWidget)
                mMessagesWidget->clear();
}

void ConsoleWidget::onLoggingFolderChanged()
{
        if (!mMessageFilter)
                return;
        mMessageListener->installFilter(mMessageFilter);
        this->updateUI();
}

void ConsoleWidget::onChannelSelectorChanged()
{
        mChannelSelector->blockSignals(true);

        mMessageFilter->setActiveChannel(mChannelSelector->getValue());
        mMessageListener->installFilter(mMessageFilter);
        this->updateUI();

        mChannelSelector->blockSignals(false);
}

void ConsoleWidget::contextMenuEvent(QContextMenuEvent* event)
{
//      QMenu *menu = mBrowser->createStandardContextMenu();
//      menu->addSeparator();
//      menu->addAction(mLineWrappingAction);
//      menu->exec(event->globalPos());
//      delete menu;
}

void ConsoleWidget::showEvent(QShowEvent* event)
{
        if (mMessagesWidget)
                mMessagesWidget->normalize();
}

void ConsoleWidget::receivedChannel(QString channel)
{
        if (!mChannels.count(channel))
        {
                mChannels.append(channel);
                mChannelSelector->setValueRange(mChannels);
        }
}

void ConsoleWidget::receivedMessage(Message message)
{
        this->receivedChannel(message.mChannel);
//      if (!mChannels.count(message.mChannel))
//      {
//              mChannels.append(message.mChannel);
//              mChannelSelector->setValueRange(mChannels);
//      }

        this->printMessage(message);
}

void ConsoleWidget::printMessage(const Message& message)
{
        if (mMessagesWidget)
                mMessagesWidget->add(message);
}

//void ConsoleWidget::lineWrappingSlot(bool checked)
//{
//}

}//namespace cx