//OpenSCADA module UI.Vision file: vis_devel_widgs.h
/***************************************************************************
 *   Copyright (C) 2006-2022 by Roman Savochenko, <roman@oscada.org>       *
 *                                                                         *
 *   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 2 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, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#ifndef VIS_DEVEL_WIDGS_H
#define VIS_DEVEL_WIDGS_H

#include <QAbstractTableModel>
#include <QDockWidget>
#include <QTreeView>
#include <QTreeWidget>
#include <QItemDelegate>
#include <QScrollArea>

#include "vis_widgs.h"

class QTreeWidgetItem;
class QTreeWidget;
class QDrag;

namespace VISION
{

//****************************************
//* Inspector of attributes model        *
//****************************************
class VisDevelop;

class ModInspAttr: public QAbstractItemModel //QAbstractTableModel
{
    Q_OBJECT

    public:
	//Public data
	//* Item of the inspector of attributes model   *
	class Item
	{
	    public:
		//Public data
		enum Type { WdgGrp, Wdg, AttrGrp, Attr };
		enum Flag {
		    Select	= 0x0001,
		    FullText	= 0x0008,
		    Active	= 0x0100,
		    Image	= 0x0200,
		    Color	= 0x0400,
		    Font	= 0x0800,
		    Resource  = 0x100000,
		    DateTime	= 0x0200,
		    SelEd	= 0x1000
		};

		//Public methods
		Item( const string &iid, Type tp, Item *parent = NULL );
		~Item( );

		string	id( )		{ return idItem; }
		string	name( );
		Type	type( ) const	{ return typeItem; }
		bool	edited( )	{ return edit_access; }
		int	flag( )		{ return flag_item; }
		bool	modify( )	{ return mModify; }
		QVariant data( );
		QVariant dataEdit( );
		QVariant dataEdit1( )	{ return dataEdit1Item; }
		string	wdgs( )		{ return wdgsItem; }
		string	help( )		{ return helpItem; }
		string	snthHgl( )	{ return snthHglItem; }

		void setName( const string &nit )	{ nameItem = nit; }
		void setEdited( bool ied )		{ edit_access = ied; }
		void setFlag( int iflg )		{ flag_item = iflg; }
		void setData( const QVariant &idt )	{ dataItem = idt; }
		void setDataEdit( const QVariant &idt )	{ dataEditItem = idt; }
		void setDataEdit1( const QVariant &idt ){ dataEdit1Item = idt; }
		void setModify( bool vl )		{ mModify = vl; }
		bool setWdgs( const string &w, bool del = false );
		void setHelp( const string &vl )	{ helpItem = vl; }
		void setSnthHgl( const string &vl )	{ snthHglItem = vl; }

		void clean( );

		Item *child( int row ) const;
		int  childGet( const string &id ) const;
		int  childCount( ) const;
		int  childInsert( const string &id, int row, Type tp );
		void childDel( int row );

		Item *parent( )		{ return parentItem; }

	    private:
		//Private attributes
		string	idItem, nameItem, wdgsItem, helpItem, snthHglItem;
		Type	typeItem;
		QVariant dataItem, dataEditItem, dataEdit1Item;;
		bool	edit_access;
		bool	mModify;
		int	flag_item;

		QList<Item*>	childItems;
		Item	*parentItem;
	};

	//Public methods
	ModInspAttr( const string &wdg, VisDevelop *mainWind );
	~ModInspAttr( );

	string user( );

	string curWdg( )	{ return cur_wdg; }
	void setWdg( const string &iwdg );

	Qt::ItemFlags flags( const QModelIndex &index ) const;
	QVariant headerData( int section, Qt::Orientation orientation, int role = Qt::DisplayRole ) const;
	QModelIndex index( int row, int column, const QModelIndex &parent = QModelIndex() ) const;
	//QModelIndex sibling( int row, int column, const QModelIndex &idx ) const;
	QModelIndex parent( const QModelIndex &index ) const;

	int rowCount( const QModelIndex &parent = QModelIndex() ) const;
	int columnCount( const QModelIndex &parent = QModelIndex() ) const;
	QVariant data( const QModelIndex &index, int role = Qt::DisplayRole ) const;
	bool setData ( const QModelIndex &index, const QVariant &value, int role = Qt::EditRole );

	VisDevelop *mainWin( ) const	{ return main_win; }

    signals:
	void modified( const string &idwdg );

    private:
	//Private methods
	void wdgAttrUpdate( const QModelIndex &mod_it, const QModelIndex &grp_it = QModelIndex(), bool first = false );

	//Private attributes
	string cur_wdg;
	Item *rootItem;
	VisDevelop *main_win;
};

//****************************************
//* Inspector of attributes widget       *
//****************************************
class InspAttr: public QTreeView
{
    Q_OBJECT

    public:
	//Public methods
	InspAttr( QWidget * parent, VisDevelop *mainWind );
	~InspAttr( );

	bool hasFocus( );

	void setWdg( const string &iwdg );

    signals:
	void modified( const string &idwdg );

    private:
	//Private data
	//* Attributes item delegate    *
	//*******************************
	class ItemDelegate: public QItemDelegate
	{
	    public:
		//Public methods
		ItemDelegate( QObject *parent = 0 );

		QWidget *createEditor( QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index ) const;
		void setEditorData( QWidget *editor, const QModelIndex &index ) const;
		void setModelData( QWidget *editor, QAbstractItemModel *model, const QModelIndex &index ) const;
		QSize sizeHint( const QStyleOptionViewItem &option, const QModelIndex &index ) const;

	    private:
		//Private methods
		bool eventFilter(QObject *object, QEvent *event);
	};

	//Private methods
	bool event( QEvent *event );
	void contextMenuEvent( QContextMenuEvent *event );

	//Private attributes
	ModInspAttr modelData;
};

//****************************************
//* Inspector of attributes dock widget  *
//****************************************
class VisDevelop;

class InspAttrDock: public QDockWidget
{
    Q_OBJECT

    public:
	//Public methods
	InspAttrDock( VisDevelop * parent );
	~InspAttrDock( );

	void messUpd( );

	VisDevelop *owner( ) const;

	bool hasFocus( );

    signals:
	void modified( const string &idwdg );

    public slots:
	void setWdg( const string &iwdg );

    private:
	//Private attributes
	InspAttr *ainsp_w;
};

//****************************************
//* Inspector of links widget            *
//****************************************
class InspLnk: public QTreeWidget
{
    Q_OBJECT

    public:
	//Public methods
	InspLnk( QWidget * parent, VisDevelop *mainWind );
	~InspLnk( );

	string user( );

	void setWdg( const string &iwdg );

	VisDevelop *mainWin( )	{ return main_win; }

    public slots:
	void changeLnk( QTreeWidgetItem*, int );

    private:
	//Private methods
	bool event( QEvent *event );
	void contextMenuEvent( QContextMenuEvent *event );

	//Private attributes
	bool show_init;
	string it_wdg;
	VisDevelop *main_win;
};

//*************************
//* Link item delegate    *
//*************************
class LinkItemDelegate: public QItemDelegate
{
    Q_OBJECT

    public:
	//Public methods
	LinkItemDelegate( InspLnk *parent = 0 );

	QWidget *createEditor( QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index ) const;
	void setEditorData( QWidget *editor, const QModelIndex &index ) const;
	void setModelData( QWidget *editor, QAbstractItemModel *model, const QModelIndex &index ) const;

	InspLnk *owner( ) const;

    public slots:
	void selItem( int val );
};

//****************************************
//* Inspector of links dock widget       *
//****************************************
class InspLnkDock: public QDockWidget
{
    Q_OBJECT

    public:
	//Public methods
	InspLnkDock( VisDevelop * parent );
	~InspLnkDock( );

	void messUpd( );

	VisDevelop *owner( ) const;

    public slots:
	void setWdg( const string &iwdg );
	void setVis( bool visible );

    private:
	//Private attributes
	InspLnk *ainsp_w;
	bool is_visible;
};

//****************************************
//* Widget's libraries tree              *
//****************************************
class WdgTree: public QDockWidget
{
    Q_OBJECT

    public:
	//Public methods
	WdgTree( VisDevelop *parent = 0 );
	~WdgTree( );

	void messUpd( );

	VisDevelop *owner( ) const;

	bool hasFocus( );

    signals:
	void selectItem( const string &vca_it, bool force = false );

    public slots:
	void updateTree( const string &vca_it = "", bool initial = false );

    protected:
	//Protecten methods
	bool eventFilter( QObject *target, QEvent *event );

    private slots:
	//Private slots
	void ctrTreePopup( );
	void dblClick( );
	void selectItem( bool force = false );

    private:
	//Private attributes
	QTreeWidget	*treeW;
	QPoint		dragStartPos;

	bool		disIconsW, disIconsCW;
};

//****************************************
//* Project's tree                       *
//****************************************
class ProjTree: public QDockWidget
{
    Q_OBJECT

    public:
	//Public methods
	ProjTree( VisDevelop * parent = 0 );
	~ProjTree( );

	void messUpd( );

	bool hasFocus( );

	VisDevelop *owner( ) const;

    signals:
	void selectItem( const string &idwdg, bool force = false );

    public slots:
	void updateTree( QTreeWidgetItem *it = NULL );
	void updateTree( const string &vca_it );

    protected:
	//Protecten methods
	bool eventFilter( QObject *target, QEvent *event );

    private slots:
	//Private slots
	void ctrTreePopup( );
	void dblClick( );
	void selectItem( bool force = false );

    private:
	//Private attributes
	QTreeWidget *treeW;
};

//**********************************************************************************************
//* Text edit line widget with detail dialog edit button. Support: Font and Color edit dialogs.*
//**********************************************************************************************
class LineEditProp : public QWidget
{
    Q_OBJECT

    public:
	//Data
	enum DType { Font, Color };

	//Methods
	LineEditProp( QWidget *parent, DType tp = Font, bool m_toClose = true );

	DType type( ) const	{ return m_tp; }
	QString value( );

	void setType( DType tp )	{ m_tp = tp; }
	void setValue( const QString& );

    private slots:
	void callDlg( );

    private:
	//Attributes
	DType		m_tp;
	QLineEdit	*ed_fld;
	bool		toClose;
};

//*********************************************
//* Status bar scale indicator                *
//*********************************************
class WScaleStBar : public QLabel
{
    Q_OBJECT

    public:
	WScaleStBar( VisDevelop *mainWind );

	bool scale( )			{ return isScale; }
	void setScale( bool val );

	VisDevelop *mainWin( ) const;

    protected:
	void mousePressEvent( QMouseEvent * event );

    private:
	bool isScale;
	VisDevelop *main_win;
};

//*********************************************
//* Status bar modify indicator               *
//*********************************************
class WMdfStBar : public QLabel
{
    Q_OBJECT

    public:
	WMdfStBar( QWidget *parent = 0 );

    signals:
	void press( );

    protected:
	void mousePressEvent( QMouseEvent * event );
};

//*************************************************
//* Size points widget                            *
//*************************************************
class SizePntWdg : public QWidget
{
    Q_OBJECT

    public:
	//Data
	enum WView { Hide, SizeDots, EditBorder, SelectBorder };
	//Methods
	SizePntWdg( QWidget* parent = 0 );

	QPointF posF( )		{ return mWPos; }
	QSizeF  sizeF( )	{ return mWSize; }
	QRectF geometryF( )	{ return QRectF(mWPos,mWSize); }

	void setSelArea( const QRectF &geom, WView view = SizeDots );
	bool event( QEvent *event );

    public slots:
	void apply( );

    private:
	//Attributes
	WView	view;
	QPointF	mWPos;		//Widget position into real;
	QSizeF	mWSize;		//Widget size into real;
};

//*************************************************
//* Shape widget view development mode            *
//*************************************************
class DevelWdgView: public WdgView
{
    Q_OBJECT

    public:
	//Data
	enum SelFlgs { PrcChilds = 0x01, OnlyFlag = 0x02, NoUpdate = 0x04 };

	//Public methods
	DevelWdgView( const string &iwid, int ilevel, VisDevelop *mainWind, QWidget *parent = 0, QScrollArea *MdiWin = 0 );
	~DevelWdgView( );

	float xScale( bool full = false );
	float yScale( bool full = false );
	float visScale( )	{ return mVisScale; }
	string user( );
	VisDevelop *mainWin( );

	bool select( )		{ return fWdgSelect; }		//Select widget state
	string selectChilds( int *cnt = NULL, vector<DevelWdgView*> *wdgs = NULL );	//Get selected include widgets list
	bool edit( )		{ return fWdgEdit; }		//Edit mode state

	void setSelect( bool vl, char flags = 0 );// bool childs = true, bool onlyFlag = false, bool noUpdate = false );
	void setEdit( bool vl );
	void wdgsMoveResize( const QPointF &dP );
	void setVisScale( float val );
	void setPrevEdExitFoc( bool vl ) { fPrevEdExitFoc = vl; }
	void setFocus( bool focus );

	WdgView *newWdgItem( const string &iwid );
	void load( const string& item, bool load = true, bool init = true, XMLNode *aBr = NULL );

	DevelWdgView *levelWidget( int lev );

	bool attrSet( const string &attr, const string &val, int uiPrmPos = A_NO_ID, bool toModel = true );

	// Resource and cache operations
	string resGet( const string &res );
	string cacheResGet( const string &res );
	void cacheResSet( const string &res, const string &val );

	// Changes operations
	void chRecord( XMLNode ch );
	void chUpdate( );
	void chLoadCtx( XMLNode &ch, const string &forceAttrs = "", const string &fromAttr = "" );
	void chRestoreCtx( const XMLNode &ch );

    signals:
	void selected( const string& item );		//Change selection signal
	void apply( const string & );

    public slots:
	void wdgViewTool( QAction* );			//View order and align of included widgets operated
	void saveGeom( const string& item );
	void wdgPopup( );
	void makeIcon( );
	void makeImage( );
	void editEnter( );
	void editExit( );
	void incDecVisScale( );
	void nextUnderlWdgWait( );
	void chUnDo( );
	void chReDo( );

    protected:
	//Protected methods
	bool event( QEvent * event );
	bool eventFilter( QObject *object, QEvent *event );
	int cntrIfCmd( XMLNode &node, bool glob = false );

    private:
	//Private methods
	bool grepAnchor( const QPointF &apnt, const QPoint &cpnt );
	void upMouseCursors( const QPoint &pnt );
	void selAreaUpdate( QRectF iR = QRectF() );

	//Private attributes
	uint8_t	fMakeScale	:1;	//Make visual item scaling
	uint8_t	fWdgEdit	:1;	//Widget under edition
	uint8_t	fWdgSelect	:1;	//Widget is selected
	uint8_t	fMoveHold	:1;	//Mouse move hold state
	uint8_t	fHoldChild	:1;	//Hold child widget in time of moving and resizing
	uint8_t	fLeftTop	:1;	//Left top anchors
	uint8_t	fHoldSelRect	:1;	//Hold for select rect
	uint8_t	fMoveHoldMove	:1;	//Mouse move on hold
	uint8_t	fHideChilds	:1;	//Hide childs on move
	uint8_t	fPrevEdExitFoc  :1;	//Prevention exit from widget edition by focus loosing
	uint8_t	fFocus		:1;	//Edition window of the widget in focus
	uint8_t	fFocusLostSelSv	:1;	//Flag of the focus lost detection and the widget selection save
	uint8_t	fMakeIco	:1;	//Make icon flag for background disable

	float		mVisScale;	//Visual scale value of root widget.

	QPoint		holdPnt;	//Hold move point
	SizePntWdg	*pntView;	//Point view
	DevelWdgView	*editWdg;
	XMLNode		*chTree;	//Changes tree
	XMLNode 	chGeomCtx;	//Change geometry context
	QPoint		dragStartPos;
	map<string,string> mCacheRes;	//Resources cache
	QScrollArea	*mMdiWin;
};

}

#endif //VIS_DEVEL_WIDGS