NCLTreeWidget.h

/*
 * Copyright 2011-2012 TeleMidia/PUC-Rio.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either 
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public 
 * License along with this library.  If not, see
 * <http://www.gnu.org/licenses/>. 
 */
#ifndef NCLTREEWIDGET_H
#define NCLTREEWIDGET_H

#include <map>
using namespace std;

#include <QDebug>
#include <QtXml>
#include <QHeaderView>
#include <QMenu>
#include <QAction>
#include <QTreeWidget>
#include <QShortcut>
#include <QKeyEvent>
#include <QWheelEvent>

#include "NCLParser.h"

class NCLTreeWidget: public QTreeWidget {
  Q_OBJECT

private:
  QAction *insertNodeAct; 
  QAction *removeNodeAct; 
  QAction *expandAllAct; 
  QMenu   *elementMenu; 
  QShortcut *shortcut_zoomout; 
  QShortcut *shortcut_zoomin; 
  bool isExpandedAll;

  int fontSize;
  QFont defaultFont;

  void createActions();
  void createMenus();

  /* User events */
  void wheelEvent(QWheelEvent * event);
  void keyPressEvent(QKeyEvent *event);

public:
  NCLTreeWidget(QWidget *parent = 0);
  virtual ~NCLTreeWidget();
  void setDefaultFont(const QFont &defaultFont);
  void mouseMoveEvent(QMouseEvent *event);

  QSize sizeHint() const { return QSize(250, 400); }

public slots:
  bool updateFromText(QString text);

  QTreeWidgetItem* addElement ( QTreeWidgetItem *father,
                                int pos,
                                QString tagname,
                                QString id,
                                QMap <QString, QString> &attrs,
                                int line_in_text = -1,
                                int column_in_text = -1);

  QTreeWidgetItem* getItemById(QString itemId);
  void removeItem(QString itemId);
  void updateItem(QTreeWidgetItem* item, QString tagname,
                  QMap <QString, QString> &attrs);

  void errorNotification( QString message,
                          QString filename,
                          int line,
                          int column,
                          int severity);
  void expandAll();


  void resetFont();
  void zoomIn();
  void zoomOut();
  void resetZoom();

private slots:
  void userAddNewElement();
  void userRemoveElement();
  void decreaseFont();
  void increaseFont();

signals:
  void elementAddedByUser(QString, QString, QMap<QString,QString>&, bool);
  void elementRemovedByUser (QString);
  void parserErrorNotify( QString message,
                          QString filename,
                          int line,
                          int column,
                          int severity);

};

#endif