diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..c61f542
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "rust-qt-binding-generator"]
+	path = rust-qt-binding-generator
+	url = https://git.greyserv.net/marrub/rust-qt-binding-generator
diff --git a/rust-qt-binding-generator b/rust-qt-binding-generator
new file mode 160000
index 0000000..598336e
--- /dev/null
+++ b/rust-qt-binding-generator
@@ -0,0 +1 @@
+Subproject commit 598336e657cb4bf5ef5070dfa35b999b7dfd341b
diff --git a/tycho/CMakeLists.txt b/tycho/CMakeLists.txt
index 91c34c2..a5f7119 100644
--- a/tycho/CMakeLists.txt
+++ b/tycho/CMakeLists.txt
@@ -23,6 +23,7 @@ add_library(
    SHARED
       $ENV{OUT_DIR}/bindings.cc
       $ENV{OUT_DIR}/bindings.h
+      cc/interface.h
       cc/main.cc
       cc/mapmodel.cc
       cc/mapprops.cc
@@ -51,6 +52,7 @@ target_include_directories(
    maraiah-tycho-hermes
    PUBLIC
       $ENV{OUT_DIR}
+      cc
 )
 
 target_link_libraries(
diff --git a/tycho/Cargo.toml b/tycho/Cargo.toml
index 7714924..3453c8a 100644
--- a/tycho/Cargo.toml
+++ b/tycho/Cargo.toml
@@ -10,7 +10,7 @@ maraiah = {path = ".."}
 [build-dependencies]
 cmake                     = "0.1"
 maraiah                   = {path = ".."}
-rust_qt_binding_generator = "0.3"
+rust_qt_binding_generator = {path = "../rust-qt-binding-generator"}
 
 [[bin]]
 name = "tycho"
diff --git a/tycho/bindings.json b/tycho/bindings.json
index 0280840..6c956b8 100644
--- a/tycho/bindings.json
+++ b/tycho/bindings.json
@@ -1,4 +1,5 @@
 {
+   "beforeHeader": "interface.h",
    "cppFile": "",
    "rust": {
       "dir": "",
@@ -8,6 +9,7 @@
    "objects": {
       "IMapModel": {
          "type": "List",
+         "baseClass": "IProjectModel",
          "functions": {
             "open": {
                "return": "bool",
@@ -27,10 +29,6 @@
                   {"name": "path", "type": "QString"}
                ]
             },
-            "isDirty": {
-               "return": "bool",
-               "mut": false
-            },
             "propIcon": {
                "return": "QString",
                "mut": false,
@@ -51,10 +49,20 @@
             }
          },
          "properties": {
+            "dirty": {"type": "bool", "write": true}
          },
          "itemProperties": {
             "propIndex": {"type": "quint64", "roles": [["display"]]}
          }
+      },
+      "IMapView": {
+         "type": "Object",
+         "functions": {
+         },
+         "properties": {
+         },
+         "itemProperties": {
+         }
       }
    }
 }
diff --git a/tycho/cc/interface.h b/tycho/cc/interface.h
new file mode 100644
index 0000000..5f97b0e
--- /dev/null
+++ b/tycho/cc/interface.h
@@ -0,0 +1,40 @@
+#pragma once
+
+#pragma clang diagnostic ignored "-Winconsistent-missing-override"
+
+#include <QAbstractItemModel>
+
+class IProjectModel : public QAbstractItemModel
+{
+   Q_OBJECT
+   Q_PROPERTY(bool dirty READ dirty WRITE setDirty NOTIFY dirtyChanged)
+
+public:
+   using QAbstractItemModel::QAbstractItemModel;
+
+   virtual ~IProjectModel() {}
+
+   virtual bool dirty() const = 0;
+   virtual void setDirty(bool dirty) = 0;
+
+   virtual bool open(QString const &path) = 0;
+   virtual bool save() const = 0;
+   virtual bool saveAs(QString const &path) const = 0;
+
+public slots:
+   virtual void deselect() = 0;
+   virtual void select(QModelIndex const &index) = 0;
+
+signals:
+   void dirtyChanged(bool dirty);
+   void deselected();
+   void selected(std::uint16_t index);
+};
+
+class IProjectView
+{
+public:
+   virtual ~IProjectView() {}
+};
+
+// EOF
diff --git a/tycho/cc/mapmodel.cc b/tycho/cc/mapmodel.cc
index 0ef3596..7424c83 100644
--- a/tycho/cc/mapmodel.cc
+++ b/tycho/cc/mapmodel.cc
@@ -1,45 +1,24 @@
 #include "tycho.h"
 
-CMapModel::CMapModel(Project *parent) :
-   IMapModel(static_cast<QWidget *>(parent)),
-   IProjectModel()
+MapModel::MapModel(Project *parent) :
+   IMapModel(parent)
 {
    dbgPrintFunc();
 }
 
-CMapModel::~CMapModel()
+MapModel::~MapModel()
 {
    dbgPrintFunc();
 }
 
-bool CMapModel::isDirty() const
-{
-   return IMapModel::isDirty();
-}
-
-bool CMapModel::open(QString const &path)
-{
-   return IMapModel::open(path);
-}
-
-bool CMapModel::save() const
-{
-   return IMapModel::save();
-}
-
-bool CMapModel::saveAs(QString const &path) const
-{
-   return IMapModel::saveAs(path);
-}
-
-void CMapModel::deselect()
+void MapModel::deselect()
 {
    IMapModel::deselect();
 
    emit deselected();
 }
 
-void CMapModel::select(QModelIndex const &index)
+void MapModel::select(QModelIndex const &index)
 {
    auto idx = index.internalId();
 
@@ -48,7 +27,7 @@ void CMapModel::select(QModelIndex const &index)
    emit selected(idx);
 }
 
-QVariant CMapModel::data(const QModelIndex &index, int role) const
+QVariant MapModel::data(const QModelIndex &index, int role) const
 {
    switch(role) {
       case Qt::DecorationRole: {
diff --git a/tycho/cc/mapprops.cc b/tycho/cc/mapprops.cc
index 992a938..823a97f 100644
--- a/tycho/cc/mapprops.cc
+++ b/tycho/cc/mapprops.cc
@@ -2,7 +2,7 @@
 
 MapProps::MapProps(Project *parent) :
    QDialog(static_cast<QWidget *>(parent)),
-   mapModel(parent->getMapModel())
+   m_mapModel(parent->mapModel())
 {
    setupUi(this);
 
diff --git a/tycho/cc/mapview.cc b/tycho/cc/mapview.cc
index 051df96..1a336e0 100644
--- a/tycho/cc/mapview.cc
+++ b/tycho/cc/mapview.cc
@@ -1,15 +1,15 @@
 #include "tycho.h"
 
-CMapView::CMapView(Project *parent) :
+MapView::MapView(Project *parent) :
    QWidget(static_cast<QWidget *>(parent)),
-   mapModel(parent->getMapModel())
+   m_mapModel(parent->mapModel())
 {
    setupUi(this);
 
    dbgPrintFunc();
 }
 
-CMapView::~CMapView()
+MapView::~MapView()
 {
    dbgPrintFunc();
 }
diff --git a/tycho/cc/menu.cc b/tycho/cc/menu.cc
index 22ec6a5..f3a2f42 100644
--- a/tycho/cc/menu.cc
+++ b/tycho/cc/menu.cc
@@ -22,7 +22,7 @@ Menu::~Menu()
 
 void Menu::mapNew()
 {
-   QScopedPointer proj{new Project(ProjectType::Map)};
+   QScopedPointer proj{new Project(Project::Map)};
 
    addProject(proj.take());
 }
@@ -40,9 +40,9 @@ void Menu::mapOpen()
             "All files (*)"));
 
    if(!fname.isEmpty()) {
-      QScopedPointer proj{new Project(ProjectType::Map)};
+      QScopedPointer proj{new Project(Project::Map)};
 
-      if(proj->getModel()->open(fname)) {
+      if(proj->model()->open(fname)) {
          addProject(proj.take());
       }
    }
@@ -98,7 +98,7 @@ void Menu::openMapProperties()
 {
    auto proj = activeProject();
 
-   if(proj && proj->getType() == ProjectType::Map) {
+   if(proj && proj->type() == Project::Map) {
       MapProps props{proj};
       props.exec();
    }
@@ -106,14 +106,14 @@ void Menu::openMapProperties()
 
 void Menu::updateActions()
 {
-   std::optional<ProjectType> active;
+   std::optional<Project::Type> active;
 
    if(auto proj = activeProject()) {
-      active = proj->getType();
+      active = proj->type();
    }
 
    actionClose->setEnabled(!!active);
-   actionMapProps->setEnabled(active == ProjectType::Map);
+   actionMapProps->setEnabled(active == Project::Map);
 }
 
 void Menu::closeEvent(QCloseEvent *event)
diff --git a/tycho/cc/project.cc b/tycho/cc/project.cc
index adb470f..a46b8c2 100644
--- a/tycho/cc/project.cc
+++ b/tycho/cc/project.cc
@@ -3,24 +3,24 @@
 static
 IProjectModel *makeModel(Project *proj)
 {
-   switch(proj->getType()) {
-      case ProjectType::Map: return new MapModel(proj);
+   switch(proj->type()) {
+      case Project::Map: return new MapModel(proj);
    }
 }
 
 static
 IProjectView *makeView(Project *proj)
 {
-   switch(proj->getType()) {
-      case ProjectType::Map: return new MapView(proj);
+   switch(proj->type()) {
+      case Project::Map: return new MapView(proj);
    }
 }
 
-Project::Project(ProjectType _type) :
+Project::Project(Type type) :
    QMdiSubWindow(),
-   type(_type),
-   model(makeModel(this)),
-   view(makeView(this))
+   m_type(type),
+   m_model(makeModel(this)),
+   m_view(makeView(this))
 {
    auto widget = new QWidget(this);
 
@@ -29,12 +29,12 @@ Project::Project(ProjectType _type) :
    setWidget(widget);
    setAttribute(Qt::WA_DeleteOnClose);
 
-   listView->setModel(dynamic_cast<QAbstractItemModel *>(model));
-   verticalLayout->insertWidget(0, dynamic_cast<QWidget *>(view));
+   listView->setModel(m_model);
+   verticalLayout->insertWidget(0, dynamic_cast<QWidget *>(m_view));
 
    connect(listView,
            SIGNAL(doubleClicked(QModelIndex const &)),
-           dynamic_cast<QObject *>(model),
+           m_model,
            SLOT(select(QModelIndex const &)));
 
    dbgPrintFunc();
@@ -45,24 +45,24 @@ Project::~Project()
    dbgPrintFunc();
 }
 
-ProjectType Project::getType() const
+Project::Type Project::type() const
 {
-   return type;
+   return m_type;
 }
 
-ProjectModel *Project::getModel() const
+IProjectModel *Project::model() const
 {
-   return model;
+   return m_model;
 }
 
-MapModel *Project::getMapModel() const
+MapModel *Project::mapModel() const
 {
-   return dynamic_cast<MapModel *>(model);
+   return dynamic_cast<MapModel *>(m_model);
 }
 
 void Project::closeEvent(QCloseEvent *event)
 {
-   if(model->isDirty()) {
+   if(m_model->dirty()) {
       QMessageBox msg;
       msg.setText(tr("Do you want to save your changes to this project before closing it?"));
       msg.setInformativeText(tr("Unsaved changes will be lost unless you save."));
@@ -73,7 +73,7 @@ void Project::closeEvent(QCloseEvent *event)
 
       switch(msg.exec()) {
          case QMessageBox::Save:
-            model->save();
+            m_model->save();
             break;
          case QMessageBox::Discard:
             break;
diff --git a/tycho/cc/tycho.h b/tycho/cc/tycho.h
index 630ec80..49976b5 100644
--- a/tycho/cc/tycho.h
+++ b/tycho/cc/tycho.h
@@ -16,8 +16,6 @@
 #include <QMdiSubWindow>
 #include <QMessageBox>
 
-#include "bindings.h"
-
 #include "../ui/ui_about.h"
 #include "../ui/ui_license.h"
 #include "../ui/ui_mapprops.h"
@@ -25,69 +23,42 @@
 #include "../ui/ui_menu.h"
 #include "../ui/ui_project.h"
 
-enum class ProjectType
-{
-   Map,
-};
+#include "bindings.h"
+
+#pragma clang diagnostic warning "-Winconsistent-missing-override"
+
+class Project;
 
 using byte = std::uint8_t;
 
-class IProjectModel
-{
-public:
-   virtual ~IProjectModel() {}
-
-   virtual bool isDirty() const = 0;
-   virtual bool open(QString const &path) = 0;
-   virtual bool save() const = 0;
-   virtual bool saveAs(QString const &path) const = 0;
-};
-
-class IProjectView
-{
-public:
-   virtual ~IProjectView() {}
-};
-
-class CMapModel final : public IMapModel,
-                       public IProjectModel
+class MapModel final : public IMapModel
 {
    Q_OBJECT
 
 public:
-   explicit CMapModel(Project *parent);
-   ~CMapModel() override;
-
-   bool isDirty() const override;
-   bool open(QString const &path) override;
-   bool save() const override;
-   bool saveAs(QString const &path) const override;
+   explicit MapModel(Project *parent);
+   ~MapModel() override;
 
 public slots:
-   void deselect();
-   void select(QModelIndex const &index);
-
-signals:
-   void deselected();
-   void selected(std::uint16_t index);
+   void deselect() override;
+   void select(QModelIndex const &index) override;
 
 private:
-   QVariant data(const QModelIndex &index, int role = Qt::DisplayRole)
-      const override;
+   QVariant data(const QModelIndex &index, int role) const override;
 };
 
-class CMapView final : public  QWidget,
-                       public  IProjectView,
-                       private Ui::CMapView
+class MapView final : public  QWidget,
+                      public  IProjectView,
+                      private Ui::MapView
 {
    Q_OBJECT
 
 public:
-   explicit CMapView(Project *parent);
-   ~CMapView();
+   explicit MapView(Project *parent);
+   ~MapView();
 
 private:
-   CMapModel *const m_mapModel;
+   MapModel *const m_mapModel;
 };
 
 class MapProps final : public  QDialog,
@@ -102,7 +73,7 @@ public:
    void accept() override;
 
 private:
-   CMapModel *const m_mapModel;
+   MapModel *const m_mapModel;
 };
 
 class Menu final : public  QMainWindow,
@@ -137,24 +108,28 @@ class Project final : public  QMdiSubWindow,
                       private Ui::Project
 {
    Q_OBJECT
+   Q_PROPERTY(Type           type     READ type     CONSTANT)
+   Q_PROPERTY(IProjectModel *model    READ model    CONSTANT)
+   Q_PROPERTY(MapModel      *mapModel READ mapModel CONSTANT)
 
 public:
-   explicit Project(ProjectType type);
+   enum Type {Map};
+   Q_ENUM(Type)
+
+   explicit Project(Type type);
    ~Project();
 
-   ProjectType getType() const;
-
-   ProjectModel *getModel() const;
-   MapModel     *getMapModel() const;
+   Type type() const;
+   IProjectModel *model() const;
+   MapModel *mapModel() const;
 
 protected:
    void closeEvent(QCloseEvent *event) override;
 
 private:
-   ProjectType const type;
-
-   ProjectModel *const model;
-   ProjectView  *const view;
+   Type           const m_type;
+   IProjectModel *const m_model;
+   IProjectView  *const m_view;
 };
 
 #pragma clang diagnostic push
diff --git a/tycho/source/gui.rs b/tycho/source/gui.rs
index 2c5078c..3a0fef2 100644
--- a/tycho/source/gui.rs
+++ b/tycho/source/gui.rs
@@ -1,8 +1,10 @@
 //! GUI implementation.
 
 mod mapmodel;
+mod mapview;
 mod qobj;
 
 pub use self::mapmodel::IMapModel;
+pub use self::mapview::IMapView;
 
 // EOF
diff --git a/tycho/source/gui/mapmodel.rs b/tycho/source/gui/mapmodel.rs
index 8e1fc51..3cb7b39 100644
--- a/tycho/source/gui/mapmodel.rs
+++ b/tycho/source/gui/mapmodel.rs
@@ -38,7 +38,7 @@ impl IMapModelTrait for IMapModel
          eprintln!("new IMapModel");
       }
 
-      Self{emit, map: EntryDataMap::default(), selected: None}
+      Self{emit, map: EntryDataMap::default(), selected: None, dirty: false}
    }
 
    /// Returns the emitter of `self`.
@@ -99,7 +99,9 @@ impl IMapModelTrait for IMapModel
    }
 
    /// Returns `true` if the file has been modified from its original state.
-   fn is_dirty(&self) -> bool {false}
+   fn dirty(&self) -> bool {self.dirty}
+
+   fn set_dirty(&mut self, dirty: bool) {self.dirty = dirty;}
 
    fn deselect(&mut self) {self.selected = None;}
 
@@ -127,6 +129,7 @@ pub struct IMapModel {
    emit:     IMapModelEmitter,
    map:      EntryDataMap,
    selected: Option<u16>,
+   dirty:    bool,
 }
 
 // EOF
diff --git a/tycho/source/gui/mapview.rs b/tycho/source/gui/mapview.rs
new file mode 100644
index 0000000..07255de
--- /dev/null
+++ b/tycho/source/gui/mapview.rs
@@ -0,0 +1,35 @@
+//! Map view.
+
+use super::qobj::*;
+
+impl IMapViewTrait for IMapView
+{
+   /// Returns a new `IMapView` instance.
+   fn new(emit: IMapViewEmitter) -> Self
+   {
+      if cfg!(debug_assertions) {
+         eprintln!("new IMapView");
+      }
+
+      Self{emit}
+   }
+
+   /// Returns the emitter of `self`.
+   fn emit(&mut self) -> &mut IMapViewEmitter {&mut self.emit}
+}
+
+impl Drop for IMapView
+{
+   fn drop(&mut self)
+   {
+      if cfg!(debug_assertions) {
+         eprintln!("drop IMapView");
+      }
+   }
+}
+
+pub struct IMapView {
+   emit: IMapViewEmitter,
+}
+
+// EOF