qgsprojectionselector.h

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/***************************************************************************
 *   qgsprojectionselector.h                                               *
 *   Copyright (C) 2005 by Tim Sutton                                      *
 *   [email protected]                                                     *
 *                                                                         *
 *   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.                                   *
 ***************************************************************************/
#ifndef QGSCRSSELECTOR_H
#define QGSCRSSELECTOR_H

#include <ui_qgsprojectionselectorbase.h>

#include <QSet>
#include <QStringList>

#include "qgis.h"

class QResizeEvent;

class GUI_EXPORT QgsProjectionSelector : public QWidget, private Ui::QgsProjectionSelectorBase
{
    Q_OBJECT
  public:
    QgsProjectionSelector( QWidget* parent, const char *name = "", Qt::WFlags fl = 0 );

    ~QgsProjectionSelector();

    void loadUserCrsList( QSet<QString> *crsFilter = 0 );

    void loadCrsList( QSet<QString> *crsFilter = 0 );

    const QString sqlSafeString( const QString theSQL );

    QString selectedAuthId();

  public slots:
    void setSelectedCrsName( QString theCRSName );

    QString selectedName();

    void setSelectedCrsId( long theCRSID );

    void setSelectedAuthId( QString authId );

    QString selectedProj4String();

    long selectedPostgresSrId();

    long selectedCrsId();

    void setOgcWmsCrsFilter( QSet<QString> crsFilter );
    void on_lstCoordinateSystems_currentItemChanged( QTreeWidgetItem *current, QTreeWidgetItem *prev );
    void on_lstRecent_currentItemChanged( QTreeWidgetItem *current, QTreeWidgetItem *prev );
    void on_cbxHideDeprecated_stateChanged();
    void on_leSearch_textChanged( const QString & );

  protected:
    void showEvent( QShowEvent * theEvent );

    void resizeEvent( QResizeEvent * theEvent );

  private:
    QString ogcWmsCrsFilterAsSqlExpression( QSet<QString> * crsFilter );

    void applySelection( int column = NONE, QString value = QString::null );

    QString getSelectedExpression( QString e );

    void showDBMissingWarning( const QString theFileName );
    // List view nodes for the tree view of projections
    QTreeWidgetItem *mUserProjList;
    QTreeWidgetItem *mGeoList;
    QTreeWidgetItem *mProjList;

    QString mCustomCsFile;
    QString mSrsDatabaseFileName;

    long getLargestCRSIDMatch( QString theSql );

    void insertRecent( long theCrsId );

    bool mProjListDone;

    bool mUserProjListDone;


    bool mRecentProjListDone;

    enum columns { NAME_COLUMN, AUTHID_COLUMN, QGIS_CRS_ID_COLUMN, NONE };
    int mSearchColumn;
    QString mSearchValue;

    bool mSkipFirstRecent;

    QSet<QString> mCrsFilter;

    QStringList mRecentProjections;

    void hideDeprecated( QTreeWidgetItem *item );

  private slots:
    QStringList authorities();

  signals:
    void sridSelected( QString theSRID );
    void refresh();
    void searchBoxHasFocus( bool );
};

#endif