Implemented Vessels VM

sea_transport/viewmodels/vesselsviewmodel.cpp

@@ -1,6 +1,65 @@
 #include "vesselsviewmodel.h"
 
-VesselsViewModel::VesselsViewModel()
-{
+VesselsViewModel::VesselsViewModel(QObject *parent) : QAbstractTableModel(parent) {
 
 }
+
+int VesselsViewModel::rowCount(const QModelIndex &/*parent*/) const {
+    return apparatus::instance()->get_object_subsystem()->vessels().length();
+}
+
+int VesselsViewModel::columnCount(const QModelIndex &/*parent*/) const {
+    return 5;
+}
+
+QVariant VesselsViewModel::headerData(int section, Qt::Orientation orientation, int role) const {
+    if (role == Qt::DisplayRole && orientation == Qt::Horizontal) {
+        switch (section) {
+            case 0:
+                return QString("VID");
+            case 1:
+                return QString("Harbor");
+            case 2:
+                return QString("Capacity");
+            case 3:
+                return QString("Cargo count");
+            case 4:
+                return QString("Cargo volume");
+        }
+    }
+    return QVariant();
+}
+
+QVariant VesselsViewModel::data(const QModelIndex &index, int role) const {
+    if (role == Qt::DisplayRole) {
+        auto item = apparatus::instance()->get_object_subsystem()->vessels()[index.row()];
+        bool s = false;
+        auto harbor = apparatus::instance()->get_object_subsystem()->get_dpoint(item.harbor(), s);
+
+        int col = index.column();
+        switch (col) {
+            case 0:
+                return QString::number(item.id());
+            case 1:
+                return (s? harbor->title() : "##ERROR##");
+            case 2:
+                return item.capacity();
+            case 3:
+                return item.cargo().length();
+            case 4:
+                int cvol = 0;
+                foreach (auto cargo, item.cargo()) {
+                    cvol += cargo.volume();
+                }
+                return cvol;
+        }
+
+        return "UNKNOWN FIELD";
+    }
+
+    return QVariant();
+}
+
+void VesselsViewModel::update() {
+    dataChanged(QModelIndex(),  QModelIndex());
+}