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/* This file is part of the KDE project
Copyright (C) 2002 Lucijan Busch <lucijan@gmx.at>
Copyright (C) 2003-2004, 2006 Jaroslaw Staniek <js@iidea.pl>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU Library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this program; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef KEXIRELATIONVIEW_H
#define KEXIRELATIONVIEW_H
#include <tqguardedptr.h>
#include <tqscrollview.h>
#include <tqptrlist.h>
#include <tqdict.h>
#include <kexidb/tableschema.h>
#include "kexirelationviewconnection.h"
class TQFrame;
class KexiRelationViewTable;
class KexiRelationViewTableContainer;
class KAction;
class KPopupMenu;
namespace KexiDB
{
class Reference;
class Connection;
}
typedef TQDict<KexiRelationViewTableContainer> TablesDict;
typedef TQDictIterator<KexiRelationViewTableContainer> TablesDictIterator;
typedef TQPtrList<KexiRelationViewConnection> ConnectionList;
typedef TQPtrListIterator<KexiRelationViewConnection> ConnectionListIterator;
struct SourceConnection
{
TQString masterTable;
TQString detailsTable;
TQString masterField;
TQString detailsField;
};
/*! @short provides a view for displaying relations between database tables.
It is currently used for two purposes:
- displaying global database relations
- displaying relations defined for a database query
The class is for displaying only - retrieving data and updating data on the backend side is implemented
in KexiRelationWidget, and more specifically in: Kexi Relation Part and Kexi Query Part.
*/
class KEXIRELATIONSVIEW_EXPORT KexiRelationView : public TQScrollView
{
Q_OBJECT
public:
KexiRelationView(TQWidget *parent, const char *name=0);
virtual ~KexiRelationView();
//! \return a dictionary of added tables
TablesDict* tables() { return &m_tables; }
/*! Adds a table \a t to the area. This changes only visual representation.
If \a rect is valid, table widget geometry will be initialized.
\return added table container or 0 on failure.
*/
KexiRelationViewTableContainer* addTableContainer(KexiDB::TableSchema *t,
const TQRect &rect = TQRect());
/*! \return table container for table \a t. */
KexiRelationViewTableContainer * tableContainer(KexiDB::TableSchema *t) const;
//! Adds a connection \a con to the area. This changes only visual representation.
void addConnection(const SourceConnection& _conn /*, bool interactive=true*/);
void setReadOnly(bool);
inline KexiRelationViewConnection* selectedConnection() const { return m_selectedConnection; }
inline KexiRelationViewTableContainer* focusedTableView() const { return m_focusedTableView; }
virtual TQSize sizeHint() const;
const ConnectionList* connections() const { return &m_connectionViews; }
// KexiRelationViewTableContainer* containerForTable(KexiDB::TableSchema* tableSchema);
signals:
void tableContextMenuRequest( const TQPoint& pos );
void connectionContextMenuRequest( const TQPoint& pos );
void emptyAreaContextMenuRequest( const TQPoint& pos );
void tableViewGotFocus();
void connectionViewGotFocus();
void emptyAreaGotFocus();
void tableHidden(KexiDB::TableSchema& t);
void tablePositionChanged(KexiRelationViewTableContainer*);
void aboutConnectionRemove(KexiRelationViewConnection*);
public slots:
//! Clears current selection - table/query or connection
void clearSelection();
/*! Removes all tables and connections from the view.
Does not emit signals like tableHidden(). */
void clear();
/*! Removes all coonections from the view. */
void removeAllConnections();
/*! Hides all tables except \a tables. */
void hideAllTablesExcept( KexiDB::TableSchema::List* tables );
void slotTableScrolling(const TQString&);
//! removes selected table or connection
void removeSelectedObject();
protected slots:
void containerMoved(KexiRelationViewTableContainer *c);
void slotListUpdate(TQObject *s);
void slotTableViewEndDrag();
void slotTableViewGotFocus();
protected:
// /*! executes popup menu at \a pos, or,
// if \a pos not specified: at center of selected table view (if any selected),
// or at center point of the relations view. */
// void executePopup( TQPoint pos = TQPoint(-1,-1) );
void drawContents(TQPainter *p, int cx, int cy, int cw, int ch);
void contentsMousePressEvent(TQMouseEvent *ev);
virtual void keyPressEvent(TQKeyEvent *ev);
void recalculateSize(int width, int height);
void stretchExpandSize();
// void invalidateActions();
// void clearTableSelection();
// void clearConnSelection();
void hideTable(KexiRelationViewTableContainer* tableView);
void removeConnection(KexiRelationViewConnection *conn);
TablesDict m_tables;
bool m_readOnly;
ConnectionList m_connectionViews;
KexiRelationViewConnection* m_selectedConnection;
TQGuardedPtr<KexiRelationViewTableContainer> m_focusedTableView;
};
#endif
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