Convert the Log widget to use custom View/Model

Co-authored-by: sledgehammer999 <hammered999@gmail.com>

src/app/application.cpp

@@ -133,6 +133,7 @@ Application::Application(int &argc, char **argv)
     , m_commandLineArgs(parseCommandLine(this->arguments()))
 {
     qRegisterMetaType<Log::Msg>("Log::Msg");
+    qRegisterMetaType<Log::Peer>("Log::Peer");
 
     setApplicationName("qBittorrent");
     setOrganizationDomain("qbittorrent.org");

src/base/logger.cpp

@@ -72,7 +72,7 @@ void Logger::freeInstance()
 void Logger::addMessage(const QString &message, const Log::MsgType &type)
 {
     QWriteLocker locker(&m_lock);
-    const Log::Msg msg = {m_msgCounter++, QDateTime::currentMSecsSinceEpoch(), type, message.toHtmlEscaped()};
+    const Log::Msg msg = {m_msgCounter++, QDateTime::currentMSecsSinceEpoch(), type, message};
     m_messages.push_back(msg);
     locker.unlock();
 
@@ -82,7 +82,7 @@ void Logger::addMessage(const QString &message, const Log::MsgType &type)
 void Logger::addPeer(const QString &ip, const bool blocked, const QString &reason)
 {
     QWriteLocker locker(&m_lock);
-    const Log::Peer msg = {m_peerCounter++, QDateTime::currentMSecsSinceEpoch(), ip.toHtmlEscaped(), blocked, reason.toHtmlEscaped()};
+    const Log::Peer msg = {m_peerCounter++, QDateTime::currentMSecsSinceEpoch(), ip, blocked, reason};
     m_peers.push_back(msg);
     locker.unlock();
 

src/gui/CMakeLists.txt

@@ -28,7 +28,9 @@ fspathedit.h
 hidabletabwidget.h
 ipsubnetwhitelistoptionsdialog.h
 lineedit.h
-loglistwidget.h
+log/logfiltermodel.h
+log/loglistview.h
+log/logmodel.h
 mainwindow.h
 optionsdialog.h
 previewlistdelegate.h
@@ -81,7 +83,9 @@ fspathedit.cpp
 hidabletabwidget.cpp
 ipsubnetwhitelistoptionsdialog.cpp
 lineedit.cpp
-loglistwidget.cpp
+log/logfiltermodel.cpp
+log/loglistview.cpp
+log/logmodel.cpp
 mainwindow.cpp
 optionsdialog.cpp
 previewlistdelegate.cpp

src/gui/executionlogwidget.cpp

@@ -29,35 +29,48 @@
 #include "executionlogwidget.h"
 
 #include <QDateTime>
+#include <QMenu>
 #include <QPalette>
 
-#include "base/global.h"
+#include "log/logfiltermodel.h"
-#include "loglistwidget.h"
+#include "log/loglistview.h"
+#include "log/logmodel.h"
 #include "ui_executionlogwidget.h"
 #include "uithememanager.h"
 
-ExecutionLogWidget::ExecutionLogWidget(QWidget *parent, const Log::MsgTypes &types)
+ExecutionLogWidget::ExecutionLogWidget(const Log::MsgTypes types, QWidget *parent)
     : QWidget(parent)
     , m_ui(new Ui::ExecutionLogWidget)
-    , m_msgList(new LogListWidget(MAX_LOG_MESSAGES, types, this))
+    , m_messageFilterModel(new LogFilterModel(types, this))
-    , m_peerList(new LogListWidget(MAX_LOG_MESSAGES, Log::ALL, this))
 {
     m_ui->setupUi(this);
 
+    LogMessageModel *messageModel = new LogMessageModel(this);
+    m_messageFilterModel->setSourceModel(messageModel);
+    LogListView *messageView = new LogListView(this);
+    messageView->setModel(m_messageFilterModel);
+    messageView->setContextMenuPolicy(Qt::CustomContextMenu);
+    connect(messageView, &LogListView::customContextMenuRequested, this, [this, messageView, messageModel](const QPoint &pos)
+    {
+        displayContextMenu(pos, messageView, messageModel);
+    });
+
+    LogPeerModel *peerModel = new LogPeerModel(this);
+    LogListView *peerView = new LogListView(this);
+    peerView->setModel(peerModel);
+    peerView->setContextMenuPolicy(Qt::CustomContextMenu);
+    connect(peerView, &LogListView::customContextMenuRequested, this, [this, peerView, peerModel](const QPoint &pos)
+    {
+        displayContextMenu(pos, peerView, peerModel);
+    });
+
+    m_ui->tabGeneral->layout()->addWidget(messageView);
+    m_ui->tabBan->layout()->addWidget(peerView);
+
 #ifndef Q_OS_MACOS
     m_ui->tabConsole->setTabIcon(0, UIThemeManager::instance()->getIcon("view-calendar-journal"));
     m_ui->tabConsole->setTabIcon(1, UIThemeManager::instance()->getIcon("view-filter"));
 #endif
-    m_ui->tabGeneral->layout()->addWidget(m_msgList);
-    m_ui->tabBan->layout()->addWidget(m_peerList);
-
-    const Logger *const logger = Logger::instance();
-    for (const Log::Msg &msg : asConst(logger->getMessages()))
-        addLogMessage(msg);
-    for (const Log::Peer &peer : asConst(logger->getPeers()))
-        addPeerMessage(peer);
-    connect(logger, &Logger::newLogMessage, this, &ExecutionLogWidget::addLogMessage);
-    connect(logger, &Logger::newLogPeer, this, &ExecutionLogWidget::addPeerMessage);
 }
 
 ExecutionLogWidget::~ExecutionLogWidget()
@@ -65,42 +78,24 @@ ExecutionLogWidget::~ExecutionLogWidget()
     delete m_ui;
 }
 
-void ExecutionLogWidget::showMsgTypes(const Log::MsgTypes &types)
+void ExecutionLogWidget::setMessageTypes(const Log::MsgTypes types)
 {
-    m_msgList->showMsgTypes(types);
+    m_messageFilterModel->setMessageTypes(types);
 }
 
-void ExecutionLogWidget::addLogMessage(const Log::Msg &msg)
+void ExecutionLogWidget::displayContextMenu(const QPoint &pos, const LogListView *view, const BaseLogModel *model) const
 {
-    QString colorName;
+    QMenu *menu = new QMenu;
-    switch (msg.type) {
+    menu->setAttribute(Qt::WA_DeleteOnClose);
-    case Log::INFO:
-        colorName = QLatin1String("blue");
-        break;
-    case Log::WARNING:
-        colorName = QLatin1String("orange");
-        break;
-    case Log::CRITICAL:
-        colorName = QLatin1String("red");
-        break;
-    default:
-        colorName = QApplication::palette().color(QPalette::WindowText).name();
-    }
 
-    const QDateTime time = QDateTime::fromMSecsSinceEpoch(msg.timestamp);
+    // only show copy action if any of the row is selected
-    const QString text = QString::fromLatin1("<font color='grey'>%1</font> - <font color='%2'>%3</font>")
+    if (view->currentIndex().isValid()) {
-        .arg(time.toString(Qt::SystemLocaleShortDate), colorName, msg.message);
+        const QAction *copyAct = menu->addAction(UIThemeManager::instance()->getIcon("edit-copy"), tr("Copy"));
-    m_msgList->appendLine(text, msg.type);
+        connect(copyAct, &QAction::triggered, view, &LogListView::copySelection);
-}
+    }
 
-void ExecutionLogWidget::addPeerMessage(const Log::Peer &peer)
+    const QAction *clearAct = menu->addAction(UIThemeManager::instance()->getIcon("edit-clear"), tr("Clear"));
-{
+    connect(clearAct, &QAction::triggered, model, &BaseLogModel::reset);
-    const QDateTime time = QDateTime::fromMSecsSinceEpoch(peer.timestamp);
-    const QString msg = QString::fromLatin1("<font color='grey'>%1</font> - <font color='red'>%2</font>")
-        .arg(time.toString(Qt::SystemLocaleShortDate), peer.ip);
 
-    const QString text = peer.blocked
+    menu->popup(view->mapToGlobal(pos));
-        ? tr("%1 was blocked %2", "0.0.0.0 was blocked due to reason").arg(msg, peer.reason)
-        : tr("%1 was banned", "0.0.0.0 was banned").arg(msg);
-    m_peerList->appendLine(text, Log::NORMAL);
 }

src/gui/executionlogwidget.h

@@ -30,33 +30,33 @@
 #define EXECUTIONLOGWIDGET_H
 
 #include <QWidget>
-#include "base/logger.h"
 
-class LogListWidget;
+#include "base/logger.h"
 
 namespace Ui
 {
     class ExecutionLogWidget;
 }
 
+class BaseLogModel;
+class LogFilterModel;
+class LogListView;
+
 class ExecutionLogWidget : public QWidget
 {
     Q_OBJECT
 
 public:
-    ExecutionLogWidget(QWidget *parent, const Log::MsgTypes &types);
+    ExecutionLogWidget(Log::MsgTypes types, QWidget *parent);
-    void showMsgTypes(const Log::MsgTypes &types);
     ~ExecutionLogWidget();
     
-private slots:
+    void setMessageTypes(Log::MsgTypes types);
-    void addLogMessage(const Log::Msg &msg);
-    void addPeerMessage(const Log::Peer &peer);
 
 private:
-    Ui::ExecutionLogWidget *m_ui;
+    void displayContextMenu(const QPoint &pos, const LogListView *view, const BaseLogModel *model) const;
 
-    LogListWidget *m_msgList;
+    Ui::ExecutionLogWidget *m_ui;
-    LogListWidget *m_peerList;
+    LogFilterModel *m_messageFilterModel;
 };
 
 #endif // EXECUTIONLOGWIDGET_H

src/gui/gui.pri

@@ -22,7 +22,9 @@ HEADERS += \
     $$PWD/hidabletabwidget.h \
     $$PWD/ipsubnetwhitelistoptionsdialog.h \
     $$PWD/lineedit.h \
-    $$PWD/loglistwidget.h \
+    $$PWD/log/logfiltermodel.h \
+    $$PWD/log/loglistview.h \
+    $$PWD/log/logmodel.h \
     $$PWD/mainwindow.h \
     $$PWD/optionsdialog.h \
     $$PWD/previewlistdelegate.h \
@@ -86,7 +88,9 @@ SOURCES += \
     $$PWD/hidabletabwidget.cpp \
     $$PWD/ipsubnetwhitelistoptionsdialog.cpp \
     $$PWD/lineedit.cpp \
-    $$PWD/loglistwidget.cpp \
+    $$PWD/log/logfiltermodel.cpp \
+    $$PWD/log/loglistview.cpp \
+    $$PWD/log/logmodel.cpp \
     $$PWD/mainwindow.cpp \
     $$PWD/optionsdialog.cpp \
     $$PWD/previewlistdelegate.cpp \

src/gui/log/logfiltermodel.cpp

@@ -0,0 +1,52 @@
+/*
+ * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2019  sledgehammer999 <hammered999@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * In addition, as a special exception, the copyright holders give permission to
+ * link this program with the OpenSSL project's "OpenSSL" library (or with
+ * modified versions of it that use the same license as the "OpenSSL" library),
+ * and distribute the linked executables. You must obey the GNU General Public
+ * License in all respects for all of the code used other than "OpenSSL".  If you
+ * modify file(s), you may extend this exception to your version of the file(s),
+ * but you are not obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ */
+
+#include "logfiltermodel.h"
+
+#include "logmodel.h"
+
+LogFilterModel::LogFilterModel(const Log::MsgTypes types, QObject *parent)
+    : QSortFilterProxyModel(parent)
+    , m_types(types)
+{
+}
+
+void LogFilterModel::setMessageTypes(const Log::MsgTypes types)
+{
+    m_types = types;
+    invalidateFilter();
+}
+
+bool LogFilterModel::filterAcceptsRow(const int sourceRow, const QModelIndex &sourceParent) const
+{
+    const QAbstractItemModel *const sourceModel = this->sourceModel();
+    const QModelIndex index = sourceModel->index(sourceRow, 0, sourceParent);
+    const Log::MsgType type = static_cast<Log::MsgType>(sourceModel->data(index, BaseLogModel::TypeRole).toInt());
+
+    return m_types.testFlag(type);
+}

src/gui/log/logfiltermodel.h

@@ -0,0 +1,48 @@
+/*
+ * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2019  sledgehammer999 <hammered999@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * In addition, as a special exception, the copyright holders give permission to
+ * link this program with the OpenSSL project's "OpenSSL" library (or with
+ * modified versions of it that use the same license as the "OpenSSL" library),
+ * and distribute the linked executables. You must obey the GNU General Public
+ * License in all respects for all of the code used other than "OpenSSL".  If you
+ * modify file(s), you may extend this exception to your version of the file(s),
+ * but you are not obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ */
+
+#pragma once
+
+#include <QSortFilterProxyModel>
+
+#include "base/logger.h"
+
+class LogFilterModel : public QSortFilterProxyModel
+{
+    Q_OBJECT
+    Q_DISABLE_COPY(LogFilterModel)
+
+public:
+    explicit LogFilterModel(Log::MsgTypes types = Log::ALL, QObject *parent = nullptr);
+    void setMessageTypes(Log::MsgTypes types);
+
+private:
+    bool filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const override;
+
+    Log::MsgTypes m_types;
+};

src/gui/log/loglistview.cpp

@@ -0,0 +1,140 @@
+/*
+ * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2020  Prince Gupta <jagannatharjun11@gmail.com>
+ * Copyright (C) 2019  sledgehammer999 <hammered999@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * In addition, as a special exception, the copyright holders give permission to
+ * link this program with the OpenSSL project's "OpenSSL" library (or with
+ * modified versions of it that use the same license as the "OpenSSL" library),
+ * and distribute the linked executables. You must obey the GNU General Public
+ * License in all respects for all of the code used other than "OpenSSL".  If you
+ * modify file(s), you may extend this exception to your version of the file(s),
+ * but you are not obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ */
+
+#include "loglistview.h"
+
+#include <QApplication>
+#include <QClipboard>
+#include <QFontMetrics>
+#include <QKeyEvent>
+#include <QPainter>
+#include <QStyle>
+#include <QStyledItemDelegate>
+
+#include "logmodel.h"
+#include "uithememanager.h"
+
+namespace
+{
+    const QString SEPARATOR = QStringLiteral(" - ");
+
+    int horizontalAdvance(const QFontMetrics &fontMetrics, const QString &text)
+    {
+#if (QT_VERSION >= QT_VERSION_CHECK(5, 11, 0))
+        return fontMetrics.horizontalAdvance(text);
+#else
+        return fontMetrics.width(text);
+#endif
+    }
+
+    QString logText(const QModelIndex &index)
+    {
+        return QString::fromLatin1("%1%2%3").arg(index.data(BaseLogModel::TimeRole).toString(), SEPARATOR
+                                                 , index.data(BaseLogModel::MessageRole).toString());
+    }
+
+    class LogItemDelegate : public QStyledItemDelegate
+    {
+    public:
+        using QStyledItemDelegate::QStyledItemDelegate;
+
+    private:
+        void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const override
+        {
+            painter->save();
+            QStyledItemDelegate::paint(painter, option, index); // paints background, focus rect and selection rect
+
+            const QStyle *style = option.widget ? option.widget->style() : QApplication::style();;
+            const QRect textRect = style->subElementRect(QStyle::SE_ItemViewItemText, &option, option.widget)
+                                   .adjusted(1, 0, 0, 0); // shift 1 to avoid text being too close to focus rect
+
+            QFont font = option.font;
+            if (option.font.pointSize() > 0)
+                font.setPointSize(option.font.pointSize()); // somehow this needs to be set directly otherwise painter will use default font
+            painter->setFont(font);
+
+            const QPen originalPen = painter->pen();
+            QPen coloredPen = originalPen;
+            coloredPen.setColor(Qt::darkGray);
+            painter->setPen(coloredPen);
+            const QString time = index.data(BaseLogModel::TimeRole).toString();
+            style->drawItemText(painter, textRect, option.displayAlignment, option.palette, (option.state & QStyle::State_Enabled), time);
+
+            painter->setPen(originalPen);
+            const QFontMetrics fontMetrics = painter->fontMetrics(); // option.fontMetrics adds extra padding to QFontMetrics::width
+            const int separatorCoordinateX = horizontalAdvance(fontMetrics, time);
+            style->drawItemText(painter, textRect.adjusted(separatorCoordinateX, 0, 0, 0), option.displayAlignment, option.palette
+                                , (option.state & QStyle::State_Enabled), SEPARATOR);
+
+            coloredPen.setColor(index.data(BaseLogModel::ForegroundRole).value<QColor>());
+            painter->setPen(coloredPen);
+            const int messageCoordinateX = separatorCoordinateX + horizontalAdvance(fontMetrics, SEPARATOR);
+            style->drawItemText(painter, textRect.adjusted(messageCoordinateX, 0, 0, 0), option.displayAlignment, option.palette
+                                , (option.state & QStyle::State_Enabled), index.data(BaseLogModel::MessageRole).toString());
+            painter->restore();
+        }
+
+        QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const override
+        {
+            const QSize minimumFontPadding(4, 4);
+            const QSize fontSize = option.fontMetrics.size(0, logText(index)) + minimumFontPadding;
+            const QSize defaultSize = QStyledItemDelegate::sizeHint(option, index);
+            const QSize margins = (defaultSize - fontSize).expandedTo({0, 0});
+            return fontSize + margins;
+        }
+    };
+}
+
+LogListView::LogListView(QWidget *parent)
+    : QListView(parent)
+{
+    setSelectionMode(QAbstractItemView::ExtendedSelection);
+    setItemDelegate(new LogItemDelegate(this));
+
+#if defined(Q_OS_MAC)
+    setAttribute(Qt::WA_MacShowFocusRect, false);
+#endif
+}
+
+void LogListView::keyPressEvent(QKeyEvent *event)
+{
+    if (event->matches(QKeySequence::Copy))
+        copySelection();
+    else
+        QListView::keyPressEvent(event);
+}
+
+void LogListView::copySelection() const
+{
+    QStringList list;
+    const QModelIndexList selectedIndexes = selectionModel()->selectedRows();
+    for (const QModelIndex &index : selectedIndexes)
+        list.append(logText(index));
+    QApplication::clipboard()->setText(list.join('\n'));
+}

src/gui/log/loglistview.h

@@ -1,6 +1,7 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2011  Christophe Dumez <chris@qbittorrent.org>
+ * Copyright (C) 2020  Prince Gupta <jagannatharjun11@gmail.com>
+ * Copyright (C) 2019  sledgehammer999 <hammered999@gmail.com>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -26,35 +27,21 @@
  * exception statement from your version.
  */
 
-#ifndef LOGLISTWIDGET_H
+#pragma once
-#define LOGLISTWIDGET_H
 
-#include <QListWidget>
+#include <QListView>
-#include "base/logger.h"
 
-class QKeyEvent;
+class LogListView : public QListView
-
-class LogListWidget : public QListWidget
 {
     Q_OBJECT
+    Q_DISABLE_COPY(LogListView)
 
 public:
-    // -1 is the portable way to have all the bits set
+    explicit LogListView(QWidget *parent = nullptr);
-    explicit LogListWidget(int maxLines, const Log::MsgTypes &types = Log::ALL, QWidget *parent = nullptr);
-    void showMsgTypes(const Log::MsgTypes &types);
 
 public slots:
-    void appendLine(const QString &line, const Log::MsgType &type);
+    void copySelection() const;
-
-protected slots:
-    void copySelection();
-
-protected:
-    void keyPressEvent(QKeyEvent *event) override;
 
 private:
-    const int m_maxLines;
+    void keyPressEvent(QKeyEvent *event) override;
-    Log::MsgTypes m_types;
 };
-
-#endif // LOGLISTWIDGET_H

src/gui/log/logmodel.cpp

@@ -0,0 +1,188 @@
+/*
+ * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2020  Prince Gupta <jagannatharjun11@gmail.com>
+ * Copyright (C) 2019  sledgehammer999 <hammered999@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * In addition, as a special exception, the copyright holders give permission to
+ * link this program with the OpenSSL project's "OpenSSL" library (or with
+ * modified versions of it that use the same license as the "OpenSSL" library),
+ * and distribute the linked executables. You must obey the GNU General Public
+ * License in all respects for all of the code used other than "OpenSSL".  If you
+ * modify file(s), you may extend this exception to your version of the file(s),
+ * but you are not obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ */
+
+#include "logmodel.h"
+
+#include <QApplication>
+#include <QDateTime>
+#include <QColor>
+#include <QPalette>
+
+#include "base/global.h"
+
+namespace
+{
+    const int MAX_VISIBLE_MESSAGES = 20000;
+}
+
+BaseLogModel::Message::Message(const QString &time, const QString &message, const QColor &foreground, const Log::MsgType type)
+    : m_time(time)
+    , m_message(message)
+    , m_foreground(foreground)
+    , m_type(type)
+{
+}
+
+QVariant BaseLogModel::Message::time() const
+{
+    return m_time;
+}
+
+QVariant BaseLogModel::Message::message() const
+{
+    return m_message;
+}
+
+QVariant BaseLogModel::Message::foreground() const
+{
+    return m_foreground;
+}
+
+QVariant BaseLogModel::Message::type() const
+{
+    return m_type;
+}
+
+BaseLogModel::BaseLogModel(QObject *parent)
+    : QAbstractListModel(parent)
+    , m_messages(MAX_VISIBLE_MESSAGES)
+{
+}
+
+int BaseLogModel::rowCount(const QModelIndex &) const
+{
+    return m_messages.size();
+}
+
+int BaseLogModel::columnCount(const QModelIndex &) const
+{
+    return 1;
+}
+
+QVariant BaseLogModel::data(const QModelIndex &index, const int role) const
+{
+    if (!index.isValid())
+        return {};
+
+    const int messageIndex = index.row();
+    if ((messageIndex < 0) || (messageIndex >= static_cast<int>(m_messages.size())))
+        return {};
+
+    const Message &message = m_messages[messageIndex];
+    switch (role) {
+    case TimeRole:
+        return message.time();
+    case MessageRole:
+        return message.message();
+    case ForegroundRole:
+        return message.foreground();
+    case TypeRole:
+        return message.type();
+    default:
+        return {};
+    }
+}
+
+void BaseLogModel::addNewMessage(const BaseLogModel::Message &message)
+{
+    // if row is inserted on filled up buffer, the size will not change
+    // but because of calling of beginInsertRows function we'll have ghost rows.
+    if (m_messages.size() == MAX_VISIBLE_MESSAGES) {
+        const int lastMessage = m_messages.size() - 1;
+        beginRemoveRows(QModelIndex(), lastMessage, lastMessage);
+        m_messages.pop_back();
+        endRemoveRows();
+    }
+
+    beginInsertRows(QModelIndex(), 0, 0);
+    m_messages.push_front(message);
+    endInsertRows();
+}
+
+void BaseLogModel::reset()
+{
+    beginResetModel();
+    m_messages.clear();
+    endResetModel();
+}
+
+LogMessageModel::LogMessageModel(QObject *parent)
+    : BaseLogModel(parent)
+{
+    for (const Log::Msg &msg : asConst(Logger::instance()->getMessages()))
+        handleNewMessage(msg);
+    connect(Logger::instance(), &Logger::newLogMessage, this, &LogMessageModel::handleNewMessage);
+}
+
+void LogMessageModel::handleNewMessage(const Log::Msg &message)
+{
+    const QString time = QDateTime::fromMSecsSinceEpoch(message.timestamp).toString(Qt::SystemLocaleShortDate);
+    const QString messageText = message.message;
+
+    QColor foreground;
+    switch (message.type) {
+    // The RGB QColor constructor is used for performance
+    case Log::NORMAL:
+        foreground = QApplication::palette().color(QPalette::WindowText);
+        break;
+    case Log::INFO:
+        foreground = QColor(0, 0, 255); // blue
+        break;
+    case Log::WARNING:
+        foreground = QColor(255, 165, 0);  // orange
+        break;
+    case Log::CRITICAL:
+        foreground = QColor(255, 0, 0);  // red
+        break;
+    default:
+        Q_ASSERT(false);
+        break;
+    }
+
+    addNewMessage({time, messageText, foreground, message.type});
+}
+
+LogPeerModel::LogPeerModel(QObject *parent)
+    : BaseLogModel(parent)
+{
+    for (const Log::Peer &peer : asConst(Logger::instance()->getPeers()))
+        handleNewMessage(peer);
+    connect(Logger::instance(), &Logger::newLogPeer, this, &LogPeerModel::handleNewMessage);
+}
+
+void LogPeerModel::handleNewMessage(const Log::Peer &peer)
+{
+    const QString time = QDateTime::fromMSecsSinceEpoch(peer.timestamp).toString(Qt::SystemLocaleShortDate);
+    const QString message = peer.blocked
+            ? tr("%1 was blocked due to %2", "0.0.0.0 was blocked due to reason").arg(peer.ip, peer.reason)
+            : tr("%1 was banned", "0.0.0.0 was banned").arg(peer.ip);
+    const QColor foreground = Qt::red;
+
+    addNewMessage({time, message, foreground, Log::NORMAL});
+}

src/gui/log/logmodel.h

@@ -0,0 +1,104 @@
+/*
+ * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2020  Prince Gupta <jagannatharjun11@gmail.com>
+ * Copyright (C) 2019  sledgehammer999 <hammered999@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * In addition, as a special exception, the copyright holders give permission to
+ * link this program with the OpenSSL project's "OpenSSL" library (or with
+ * modified versions of it that use the same license as the "OpenSSL" library),
+ * and distribute the linked executables. You must obey the GNU General Public
+ * License in all respects for all of the code used other than "OpenSSL".  If you
+ * modify file(s), you may extend this exception to your version of the file(s),
+ * but you are not obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ */
+
+#pragma once
+
+#include <boost/circular_buffer.hpp>
+
+#include <QAbstractListModel>
+
+#include "base/logger.h"
+
+class BaseLogModel : public QAbstractListModel
+{
+    Q_DISABLE_COPY(BaseLogModel)
+
+public:
+    enum MessageTypeRole
+    {
+        TimeRole = Qt::UserRole,
+        MessageRole,
+        ForegroundRole,
+        TypeRole
+    };
+
+    explicit BaseLogModel(QObject *parent = nullptr);
+
+    int rowCount(const QModelIndex &parent = {}) const override;
+    int columnCount(const QModelIndex &parent = {}) const override;
+    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
+    void reset();
+
+protected:
+    class Message
+    {
+    public:
+        Message(const QString &time, const QString &message, const QColor &foreground, Log::MsgType type);
+
+        QVariant time() const;
+        QVariant message() const;
+        QVariant foreground() const;
+        QVariant type() const;
+
+    private:
+        QVariant m_time;
+        QVariant m_message;
+        QVariant m_foreground;
+        QVariant m_type;
+    };
+
+    void addNewMessage(const Message &message);
+
+private:
+    boost::circular_buffer_space_optimized<Message> m_messages;
+};
+
+class LogMessageModel : public BaseLogModel
+{
+    Q_OBJECT
+    Q_DISABLE_COPY(LogMessageModel)
+
+public:
+    explicit LogMessageModel(QObject *parent = nullptr);
+
+private slots:
+    void handleNewMessage(const Log::Msg &message);
+};
+
+class LogPeerModel : public BaseLogModel
+{
+    Q_OBJECT
+    Q_DISABLE_COPY(LogPeerModel)
+
+public:
+    explicit LogPeerModel(QObject *parent = nullptr);
+
+private slots:
+    void handleNewMessage(const Log::Peer &peer);
+};

src/gui/loglistwidget.cpp

@@ -1,108 +0,0 @@
-/*
- * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2011  Christophe Dumez <chris@qbittorrent.org>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
- *
- * In addition, as a special exception, the copyright holders give permission to
- * link this program with the OpenSSL project's "OpenSSL" library (or with
- * modified versions of it that use the same license as the "OpenSSL" library),
- * and distribute the linked executables. You must obey the GNU General Public
- * License in all respects for all of the code used other than "OpenSSL".  If you
- * modify file(s), you may extend this exception to your version of the file(s),
- * but you are not obligated to do so. If you do not wish to do so, delete this
- * exception statement from your version.
- */
-
-#include "loglistwidget.h"
-
-#include <QAction>
-#include <QApplication>
-#include <QClipboard>
-#include <QKeyEvent>
-#include <QLabel>
-#include <QListWidgetItem>
-#include <QRegularExpression>
-
-#include "base/global.h"
-#include "uithememanager.h"
-
-LogListWidget::LogListWidget(const int maxLines, const Log::MsgTypes &types, QWidget *parent)
-    : QListWidget(parent)
-    , m_maxLines(maxLines)
-    , m_types(types)
-{
-    // Allow multiple selections
-    setSelectionMode(QAbstractItemView::ExtendedSelection);
-    // Context menu
-    auto *copyAct = new QAction(UIThemeManager::instance()->getIcon("edit-copy"), tr("Copy"), this);
-    auto *clearAct = new QAction(UIThemeManager::instance()->getIcon("edit-clear"), tr("Clear"), this);
-    connect(copyAct, &QAction::triggered, this, &LogListWidget::copySelection);
-    connect(clearAct, &QAction::triggered, this, &LogListWidget::clear);
-    addAction(copyAct);
-    addAction(clearAct);
-    setContextMenuPolicy(Qt::ActionsContextMenu);
-}
-
-void LogListWidget::showMsgTypes(const Log::MsgTypes &types)
-{
-    m_types = types;
-    for (int i = 0; i < count(); ++i) {
-        QListWidgetItem *tempItem = item(i);
-        if (!tempItem) continue;
-
-        Log::MsgType itemType = static_cast<Log::MsgType>(tempItem->data(Qt::UserRole).toInt());
-        setRowHidden(i, !(m_types & itemType));
-    }
-}
-
-void LogListWidget::keyPressEvent(QKeyEvent *event)
-{
-    if (event->matches(QKeySequence::Copy))
-        copySelection();
-    else
-        QListWidget::keyPressEvent(event);
-}
-
-void LogListWidget::appendLine(const QString &line, const Log::MsgType &type)
-{
-    // We need to use QLabel here to support rich text
-    auto *lbl = new QLabel(line);
-    lbl->setTextFormat(Qt::RichText);
-    lbl->setContentsMargins(4, 2, 4, 2);
-
-    auto *item = new QListWidgetItem;
-    item->setSizeHint(lbl->sizeHint());
-    item->setData(Qt::UserRole, type);
-    insertItem(0, item);
-    setItemWidget(item, lbl);
-    setRowHidden(0, !(m_types & type));
-
-    const int nbLines = count();
-    // Limit log size
-    if (nbLines > m_maxLines)
-        delete takeItem(nbLines - 1);
-}
-
-void LogListWidget::copySelection()
-{
-    const QRegularExpression htmlTag("<[^>]+>");
-
-    QStringList strings;
-    for (QListWidgetItem *it : asConst(selectedItems()))
-        strings << static_cast<QLabel*>(itemWidget(it))->text().remove(htmlTag);
-
-    QApplication::clipboard()->setText(strings.join('\n'));
-}

src/gui/mainwindow.cpp

@@ -487,7 +487,7 @@ int MainWindow::executionLogMsgTypes() const
 
 void MainWindow::setExecutionLogMsgTypes(const int value)
 {
-    m_executionLog->showMsgTypes(static_cast<Log::MsgTypes>(value));
+    m_executionLog->setMessageTypes(static_cast<Log::MsgTypes>(value));
     settings()->storeValue(KEY_EXECUTIONLOG_TYPES, value);
 }
 
@@ -1866,7 +1866,7 @@ void MainWindow::on_actionExecutionLogs_triggered(bool checked)
 {
     if (checked) {
         Q_ASSERT(!m_executionLog);
-        m_executionLog = new ExecutionLogWidget(m_tabs, static_cast<Log::MsgType>(executionLogMsgTypes()));
+        m_executionLog = new ExecutionLogWidget(static_cast<Log::MsgType>(executionLogMsgTypes()), m_tabs);
 #ifdef Q_OS_MACOS
         m_tabs->addTab(m_executionLog, tr("Execution Log"));
 #else