Convert the Log widget to use custom View/Model

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

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);
+};