diff -r 4f226fd97826 -r 02264bf0108d src/lddocument.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/lddocument.h	Tue Feb 14 14:52:01 2017 +0200
@@ -0,0 +1,116 @@
+/*
+ *  LDForge: LDraw parts authoring CAD
+ *  Copyright (C) 2013 - 2017 Teemu Piippo
+ *
+ *  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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include <QObject>
+#include "main.h"
+#include "ldObject.h"
+#include "editHistory.h"
+#include "glShared.h"
+#include "model.h"
+
+struct LDGLData;
+class DocumentManager;
+
+//
+// This class stores a document either as a editable file for the user or for
+// subfile caching.
+//
+// A document is implicit when they are opened automatically for caching purposes
+// and are hidden from the user. User-opened files are explicit (not implicit).
+//
+// The default name is a placeholder, initially suggested name for a file. The
+// primitive generator uses this to give initial names to primitives.
+//
+class LDDocument : public Model, public HierarchyElement
+{
+	Q_OBJECT
+
+public:
+	LDDocument (DocumentManager* parent);
+	~LDDocument();
+
+	void addHistoryStep();
+	void addToHistory (AbstractHistoryEntry* entry);
+	void addToSelection (LDObject* obj);
+	void clearHistory();
+	void clearSelection();
+	void close();
+	QString defaultName() const;
+	QString fullPath();
+	QString getDisplayName();
+	const QSet<LDObject*>& getSelection() const;
+	bool hasUnsavedChanges() const;
+	EditHistory* history() const;
+	void initializeCachedData();
+	void inlineContents(Model& model, bool deep, bool renderinline);
+	QList<LDPolygon> inlinePolygons();
+	const QSet<Vertex>& inlineVertices();
+	void insertObject (int pos, LDObject* obj);
+	bool isFrozen() const;
+	bool isSafeToClose();
+	QString name() const;
+	void objectRemoved(LDObject* object, int index);
+	const QList<LDPolygon>& polygonData() const;
+	void recountTriangles();
+	void redo();
+	void redoVertices();
+	void reloadAllSubfiles();
+	void removeFromSelection (LDObject* obj);
+	bool save (QString path = "", qint64* sizeptr = nullptr);
+	long savePosition() const;
+	void setDefaultName (QString value);
+	void setFrozen(bool value);
+	void setFullPath (QString value);
+	void setName (QString value);
+	void setSavePosition (long value);
+	void setTabIndex (int value);
+	bool swapObjects (LDObject* one, LDObject* other);
+	int tabIndex() const;
+	void undo();
+	void vertexChanged (const Vertex& a, const Vertex& b);
+
+	static QString shortenName (QString a); // Turns a full path into a relative path
+
+public slots:
+	void objectChanged(QString before, QString after);
+
+protected:
+	LDObject* withdrawAt(int position);
+
+private:
+	QString m_name;
+	QString m_fullPath;
+	QString m_defaultName;
+	EditHistory* m_history;
+	bool m_isFrozen = true; // Document may not be modified
+	bool m_verticesOutdated = true;
+	bool m_isBeingDestroyed = true;
+	bool m_needsRecache = true; // The next polygon inline of this document rebuilds stored polygon data.
+	long m_savePosition;
+	int m_tabIndex;
+	int m_triangleCount;
+	QList<LDPolygon> m_polygonData;
+	QMap<LDObject*, QSet<Vertex>> m_objectVertices;
+	QSet<Vertex> m_vertices;
+	QSet<LDObject*> m_selection;
+	DocumentManager* m_manager;
+};
+
+// Parses a string line containing an LDraw object and returns the object parsed.
+LDObject* ParseLine (QString line);