text: /* Copyright 2007-2016 QReal Research Group
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License. */
  
  #pragma once
  
  #include <qrkernel/ids.h>
  
  namespace qReal {
  namespace models {
  namespace details {
  namespace modelsImplementation {
  
  class AbstractModelItem
  {
  public:
  	virtual ~AbstractModelItem();
  
  	typedef QList<AbstractModelItem*> PointerList;
  
  	AbstractModelItem(const Id &id, AbstractModelItem *parent);
  	Id id() const;
  	AbstractModelItem *parent() const;
  	PointerList children() const;
  
  	int row() const;
  	void addChild(AbstractModelItem *child);
  	void removeChild(AbstractModelItem *child);
  	void clearChildren();
  
  	void setParent(AbstractModelItem *parent);
  
  	/// Stacks item element before sibling (they should have the same parent)
  	void stackBefore(AbstractModelItem *element, AbstractModelItem *sibling);
  
  private:
  	AbstractModelItem *mParent;
  	const Id mId;
  	PointerList mChildren;
  };
  
  }
  }
  }
  }
  