# HG changeset patch
# User Hasan Yavuz ÖZDERYA <hy@ozderya.net>
# Date 2016-12-31 09:37:37
# Node ID a8a13a36dd17619e781a9b70a6ddcd402863fa9f
# Parent  1399cc9872eb95b8552a4064c489b371d9239f1e

adding channelinfomodel implemented as a draft

diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -103,6 +103,7 @@ add_executable(${PROGRAM_NAME} WIN32
   src/tooltipfilter.cpp
   src/sneakylineedit.cpp
   src/channelmanager.cpp
+  src/channelinfomodel.cpp
   src/framebufferseries.cpp
   src/numberformatbox.cpp
   src/endiannessbox.cpp
diff --git a/src/channelinfomodel.cpp b/src/channelinfomodel.cpp
new file mode 100644
--- /dev/null
+++ b/src/channelinfomodel.cpp
@@ -0,0 +1,115 @@
+/*
+  Copyright © 2017 Hasan Yavuz Özderya
+
+  This file is part of serialplot.
+
+  serialplot 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 3 of the License, or
+  (at your option) any later version.
+
+  serialplot 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 serialplot.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "channelinfomodel.h"
+
+/// name + visibility
+enum ChannelInfoColumn
+{
+    COLUMN_NAME = 0,
+    COLUMN_VISIBILITY,
+    COLUMN_COUNT
+};
+
+ChannelInfoModel::ChannelInfoModel(unsigned numberOfChannels, QObject* parent) :
+    QAbstractTableModel(parent)
+{
+    _numOfChannels = 0;
+    setNumOfChannels(numberOfChannels);
+}
+
+int ChannelInfoModel::rowCount(const QModelIndex &parent) const
+{
+    return _numOfChannels;
+}
+
+int ChannelInfoModel::columnCount(const QModelIndex & parent) const
+{
+    return COLUMN_COUNT;
+}
+
+QVariant ChannelInfoModel::data(const QModelIndex &index, int role) const
+{
+    // TODO: check role parameter
+
+    if (index.row() < (int) _numOfChannels)
+    {
+        if (index.column() == COLUMN_NAME)
+        {
+            return QVariant(infos[index.row()].name);
+        }
+        else if (index.column() == COLUMN_VISIBILITY)
+        {
+            return QVariant(infos[index.row()].visibility);
+        }
+    }
+
+    // invalid index
+    return QVariant();
+}
+
+bool ChannelInfoModel::setData(const QModelIndex &index, const QVariant &value, int role)
+{
+    // TODO: check role
+
+    if (index.row() < (int) _numOfChannels)
+    {
+        if (index.column() == COLUMN_NAME)
+        {
+            infos[index.row()].name = value.toString();
+            return true;
+        }
+        else if (index.column() == COLUMN_VISIBILITY)
+        {
+            infos[index.row()].visibility = value.toBool();
+            return true;
+        }
+    }
+
+    // invalid index
+    return false;
+}
+
+void ChannelInfoModel::setNumOfChannels(unsigned number)
+{
+    if (number == _numOfChannels) return;
+
+    // we create channel info but never remove channel info to
+    // remember user entered info
+    if ((int) number > infos.length())
+    {
+        for (unsigned ci = _numOfChannels; ci < number; ci++)
+        {
+            infos.append({QString("Channel %d").arg(ci), true});
+        }
+    }
+
+    // make sure newly available channels are visible, we don't
+    // remember visibility option intentionally so that user doesn't
+    // get confused
+    if (number > _numOfChannels)
+    {
+        for (unsigned ci = _numOfChannels; ci < number; ci++)
+        {
+            infos[ci].visibility = true;
+        }
+    }
+
+    _numOfChannels = number;
+}
diff --git a/src/channelinfomodel.h b/src/channelinfomodel.h
new file mode 100644
--- /dev/null
+++ b/src/channelinfomodel.h
@@ -0,0 +1,57 @@
+/*
+  Copyright © 2017 Hasan Yavuz Özderya
+
+  This file is part of serialplot.
+
+  serialplot 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 3 of the License, or
+  (at your option) any later version.
+
+  serialplot 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 serialplot.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef CHANNELINFOMODEL_H
+#define CHANNELINFOMODEL_H
+
+#include <QAbstractTableModel>
+#include <QStringList>
+
+class ChannelInfoModel : public QAbstractTableModel
+{
+    Q_OBJECT
+
+public:
+    explicit ChannelInfoModel(unsigned numberOfChannels, QObject *parent = 0);
+
+    // implemented from QAbstractItemModel
+    int      rowCount(const QModelIndex &parent = QModelIndex()) const;
+    int      columnCount(const QModelIndex &parent = QModelIndex()) const;
+    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
+    bool     setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole);
+
+    void setNumOfChannels(unsigned number);
+
+private:
+    struct ChannelInfo
+    {
+        QString name;
+        bool visibility;
+    };
+
+    unsigned _numOfChannels;     ///< @note this is not necessarily the length of `infos`
+
+    /**
+     * Channel info is added here but never removed so that we can
+     * remember user entered names.
+     */
+    QList<ChannelInfo> infos;
+};
+
+#endif // CHANNELINFOMODEL_H
diff --git a/src/main.cpp b/src/main.cpp
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -24,6 +24,9 @@
 #include "tooltipfilter.h"
 #include "version.h"
 
+// test code
+#include <QTableView>
+#include "channelinfomodel.h"
 
 MainWindow* pMainWindow;
 
@@ -50,5 +53,14 @@ int main(int argc, char *argv[])
     qDebug() << "Revision" << VERSION_REVISION;
 
     w.show();
+
+    // test code
+    ChannelInfoModel cim(5, &a);
+    QTableView tv;
+
+    tv.setModel(&cim);
+
+    tv.show();
+
     return a.exec();
 }