// Aseprite
// Copyright (C) 2018  Igara Studio S.A.
// Copyright (c) 2001-2018  David Capello
//
// This program is distributed under the terms of
// the End-User License Agreement for Aseprite.

#ifndef APP_DOCS_H_INCLUDED
#define APP_DOCS_H_INCLUDED
#pragma once

#include "app/docs_observer.h"
#include "base/disable_copying.h"
#include "doc/color_mode.h"
#include "doc/object_id.h"
#include "obs/observable.h"

#include <vector>

namespace app {

class Context;
class Doc;

class Docs : public obs::observable<DocsObserver> {
public:
  typedef std::vector<Doc*>::iterator iterator;
  typedef std::vector<Doc*>::const_iterator const_iterator;

  Docs(Context* ctx);
  ~Docs();

  iterator begin() { return m_docs.begin(); }
  iterator end() { return m_docs.end(); }
  const_iterator begin() const { return m_docs.begin(); }
  const_iterator end() const { return m_docs.end(); }

  Doc* front() const { return m_docs.front(); }
  Doc* back() const { return m_docs.back(); }
  Doc* lastAdded() const { return front(); }

  int size() const { return (int)m_docs.size(); }
  bool empty() const { return m_docs.empty(); }

  // Add a new documents to the list.
  Doc* add(Doc* doc);

  // Easy function for testing
  Doc* add(int width, int height, doc::ColorMode colorMode = doc::ColorMode::RGB, int ncolors = 256);

  // Removes a document from the list without deleting it. You must
  // to delete the document after removing it.
  void remove(Doc* doc);

  // Moves the document to the given location in the same
  // list. E.g. It is used to reorder documents when they are
  // selected as active.
  void move(Doc* doc, int index);

  Doc* operator[](int index) const { return m_docs[index]; }
  Doc* getById(doc::ObjectId id) const;
  Doc* getByName(const std::string& name) const;
  Doc* getByFileName(const std::string& filename) const;

private:
  // Deletes all documents in the list (calling "delete" operation).
  void deleteAll();

  Context* m_ctx;
  std::vector<Doc*> m_docs;

  DISABLE_COPYING(Docs);
};

} // namespace app

#endif
