/**********************************************************************
 This file is based on Qt Designer, Copyright (C) 2000 Trolltech AS.  All rights reserved.

 This file may be distributed and/or modified under the terms of the
 GNU General Public License version 2 as published by the Free Software
 Foundation and appearing in the file LICENSE.GPL included in the
 packaging of this file.

 This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

 See http://www.trolltech.com/gpl/ for GPL licensing information.

 Modified for Kommander:
  (C) 2002-2003 Marc Britton <consume@optusnet.com.au>
  (C) 2004      Michal Rudolf <mrudolf@kdewebdev.org>

**********************************************************************/

#ifndef FORMWINDOW_H
#define FORMWINDOW_H

#include "command.h"
#include "metadatabase.h"
#include "sizehandle.h"
#include "actiondnd.h"


#include <qwidget.h>
#include <qmap.h>
#include <qptrdict.h>
#include <qpixmap.h>
#include <qwidgetlist.h>
#include <qmap.h>

class QPaintEvent;
class QMouseEvent;
class QKeyEvent;
class QPainter;
class QLabel;
class MainWindow;
class QTimer;
class QFocusEvent;
class QCloseEvent;
class Resource;
class QResizeEvent;
class BreakLayoutCommand;
class QPixmap;
class QSizeGrip;
class FormFile;

#if defined(Q_FULL_TEMPLATE_INSTANTIATION)
#include "orderindicator.h"
#else
class OrderIndicator;
#endif

class FormWindow : public QWidget
{
    Q_OBJECT
    Q_PROPERTY( QString fileName READ fileName WRITE setFileName )

public:
  FormWindow( FormFile *f, MainWindow *mw, QWidget *parent, const char *name = 0 );
  FormWindow( FormFile *f, QWidget *parent, const char *name = 0 );
  ~FormWindow();

  void init();
  virtual void setMainWindow( MainWindow *w );

  virtual QString fileName() const;
  virtual void setFileName( const QString &fn );

  virtual QPoint grid() const;
  virtual QPoint gridPoint( const QPoint &p );

  virtual CommandHistory *commandHistory();

  virtual void undo();
  virtual void redo();
  virtual QString copy();
  virtual void paste( const QString &cb, QWidget *parent );
  virtual void lowerWidgets();
  virtual void raiseWidgets();
  virtual void checkAccels();

  virtual void layoutHorizontal();
  virtual void layoutVertical();
  virtual void layoutHorizontalSplit();
  virtual void layoutVerticalSplit();
  virtual void layoutGrid();

  virtual void layoutHorizontalContainer( QWidget *w );
  virtual void layoutVerticalContainer( QWidget *w );
  virtual void layoutGridContainer( QWidget *w );

  virtual void breakLayout( QWidget *w );

  virtual void selectWidget( QObject *w, bool select = TRUE );
  virtual void selectAll();
  virtual void updateSelection( QWidget *w );
  virtual void raiseSelection( QWidget *w );
  virtual void repaintSelection( QWidget *w );
  virtual void clearSelection( bool changePropertyDisplay = TRUE );
  virtual void selectWidgets();
  bool isWidgetSelected( QObject *w );
  virtual void updateChildSelections( QWidget *w );
  virtual void raiseChildSelections( QWidget *w );

  virtual void emitUpdateProperties( QObject *w );
  virtual void emitShowProperties( QObject *w = 0 );
  virtual void emitSelectionChanged();

  virtual void setPropertyShowingBlocked( bool b );
  bool isPropertyShowingBlocked() const;

  virtual QLabel *sizePreview() const;
  virtual void checkPreviewGeometry( QRect &r );

  virtual QPtrDict<QWidget> *widgets();
  virtual QWidgetList selectedWidgets() const;

  virtual QWidget *designerWidget( QObject *o ) const;

  virtual void handleContextMenu( QContextMenuEvent *e, QWidget *w );
  virtual void handleMousePress( QMouseEvent *e, QWidget *w );
  virtual void handleMouseRelease( QMouseEvent *e, QWidget *w );
  virtual void handleMouseDblClick( QMouseEvent *e, QWidget *w );
  virtual void handleMouseMove( QMouseEvent *e, QWidget *w );
  virtual void handleKeyPress( QKeyEvent *e, QWidget *w );
  virtual void handleKeyRelease( QKeyEvent *e, QWidget *w );

  virtual void updateUndoInfo();

  virtual MainWindow *mainWindow() const { return mainwindow; }

  bool checkCustomWidgets();
  virtual void insertWidget( QWidget *w, bool checkName = FALSE );
  virtual void removeWidget( QWidget *w );
  virtual void deleteWidgets();
  virtual void editAdjustSize();
  virtual void editConnections();

  virtual int numSelectedWidgets() const;
  virtual int numVisibleWidgets() const;

  virtual bool hasInsertedChildren( QWidget *w ) const;

  virtual QWidget *currentWidget() const 
    { return propertyWidget && propertyWidget->isWidgetType() ? (QWidget*)propertyWidget : 0; } 
  virtual bool unify( QObject *w, QString &s, bool changeIt );

  virtual bool isCustomWidgetUsed( MetaDataBase::CustomWidget *w );
  virtual bool isDatabaseWidgetUsed() const;
  virtual bool isDatabaseAware() const;

  virtual QPoint mapToForm( const QWidget* w, const QPoint&  ) const;

  bool isMainContainer( QObject *w ) const;
  bool isCentralWidget( QObject *w ) const;
  QWidget *mainContainer() const { return mContainer; }
  void setMainContainer( QWidget *w );

  void paintGrid( QWidget *w, QPaintEvent *e );

  bool savePixmapInline() const;
  QString pixmapLoaderFunction() const;
  void setSavePixmapInline( bool b );
  void setPixmapLoaderFunction( const QString &func );

  void setToolFixed() { toolFixed = TRUE; }

  void setActiveObject( QObject *o );

  QPtrList<QAction> &actionList() { return actions; }
  QAction *findAction( const QString &name );

  void killAccels( QObject *top );

  int layoutDefaultSpacing() const;
  int layoutDefaultMargin() const;
  void setLayoutDefaultSpacing( int s );
  void setLayoutDefaultMargin( int s );

  void initSlots();
  FormFile *formFile() const;
  void setFormFile( FormFile *f );

public slots:
  virtual void widgetChanged( QObject *w );
  virtual void currentToolChanged();
  virtual void visibilityChanged();
  virtual void modificationChanged( bool m );

signals:
  void showProperties( QObject *w );
  void updateProperties( QObject *w );
  void undoRedoChanged( bool undoAvailable, bool redoAvailable,  const QString &undoCmd, 
    const QString &redoCmd );
  void selectionChanged();
  void modificationChanged( bool m, FormWindow *fw );
  void modificationChanged( bool m, const QString &s );
  void fileNameChanged( const QString &s, FormWindow *fw );

protected:
  virtual void closeEvent( QCloseEvent *e );
  virtual void focusInEvent( QFocusEvent *e );
  virtual void focusOutEvent( QFocusEvent *e );
  virtual void resizeEvent( QResizeEvent *e );
  void mouseDoubleClickEvent( QMouseEvent *e ) 
      { handleMouseDblClick( e, mainContainer() ); }

private:
  enum RectType { Insert, Rubber };

  virtual void beginUnclippedPainter( bool doNot );
  virtual void endUnclippedPainter();
  virtual void drawConnectLine();
  virtual void drawSizePreview( const QPoint &pos, const QString& text );

  virtual void insertWidget();
  virtual void moveSelectedWidgets( int dx, int dy );

  virtual void startRectDraw( const QPoint &p, const QPoint &global, QWidget *w, RectType t );
  virtual void continueRectDraw( const QPoint &p, const QPoint &global, QWidget *w, RectType t );
  virtual void endRectDraw();

  virtual void checkSelectionsForMove( QWidget *w );
  virtual BreakLayoutCommand *breakLayoutCommand( QWidget *w );

  virtual bool allowMove( QWidget *w );

  virtual void saveBackground();
  virtual void restoreConnectionLine();
  virtual void restoreRect( const QRect &rect ) ;

  virtual void showOrderIndicators();
  virtual void updateOrderIndicators();
  virtual void repositionOrderIndicators();
  virtual void hideOrderIndicators();

  virtual QWidget *containerAt( const QPoint &pos, QWidget *notParentOf );

  QObject *connectableObject( QObject *w, QObject *fallback );

private slots:
  virtual void invalidCheckedSelections();
  virtual void updatePropertiesTimerDone();
  virtual void showPropertiesTimerDone();
  virtual void selectionChangedTimerDone();
  
private:
  int currTool;
  bool oldRectValid, widgetPressed, drawRubber, checkedSelectionsForMove;
  QRect currRect;
  QPoint rectAnchor;
  QPainter *unclippedPainter;
  QPoint sizePreviewPos;
  QPixmap sizePreviewPixmap;
  MainWindow *mainwindow;
  QPtrList<WidgetSelection> selections;
  QPtrDict<WidgetSelection> usedSelections;
  QRect widgetGeom, rubber;
  QPoint oldPressPos, origPressPos;
  CommandHistory commands;
  QMap<ulong, QPoint> moving;
  QWidget *insertParent;
  QObject *propertyWidget;
  QLabel *sizePreviewLabel;
  QTimer *checkSelectionsTimer;
  QPtrDict<QWidget> insertedWidgets;
  bool propShowBlocked;
  QTimer* updatePropertiesTimer, *showPropertiesTimer, *selectionChangedTimer;
  QPoint connectStartPos, currentConnectPos;
  QObject *connectSender, *connectReceiver;
  QPixmap *buffer;
  QPtrList<OrderIndicator> orderIndicators;
  QWidgetList orderedWidgets;
  QWidgetList stackedWidgets;
  QWidget *mContainer;
  bool pixInline;
  QString pixLoader;
  bool toolFixed;
  QPtrList<QAction> actions;
  QWidget* targetContainer;
  QPalette restorePalette;
  bool hadOwnPalette;
  int defSpacing, defMargin;
  FormFile *ff;
};

#endif