YQPkgConflictDialog.h

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|                                                        (C) SuSE GmbH |
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  File:       YQPkgConflictDialog.h
 
  Author:     Stefan Hundhammer <sh@suse.de>
 
/-*/
 
 
#ifndef YQPkgConflictDialog_h
#define YQPkgConflictDialog_h
 
#include <QDialog>
#include <QMenu>
#include <QLabel>
 
class YQPkgConflictList;
class PMManager;
class QPushButton;
class QMenu;
class QLabel;
 
 
/**
 * @short Dialog that takes care of dependency checking and resolving
 * conflicts.
 **/
class YQPkgConflictDialog: public QDialog
{
    Q_OBJECT
 
public:
 
    /**
     * Constructor. Does not pop up a dialog yet.
     * Use solveAndShowConflicts().
     **/
    YQPkgConflictDialog( QWidget * parent );
 
    /**
     * Destructor.
     **/
    virtual ~YQPkgConflictDialog();
 
    /**
     * Reimplemented from QWidget:
     * Reserve a reasonable amount of space.
     **/
    virtual QSize sizeHint() const;
 
    /**
     * Returns the average time in seconds used for solving or 0 if solving
     * hasn't taken place yet.
     **/
    double averageSolveTime() const;
 
    /**
     * Returns the total amount of time in seconds used for solving.
     **/
    double totalSolveTime() const { return _totalSolveTime; }
 
    /**
     * Returns the times solving has taken place (with this dialog).
     **/
    int solveCount() const { return _solveCount; }
 
    /**
     * Reset all previously ignored dependency problems.
     **/
    static void resetIgnoredDependencyProblems();
 
 
public slots:
 
    /**
     * Run the package dependency solver for the current package set and open
     * the conflict dialog if there are any conflicts.
     * Returns only when the conflict dialog is closed.
     *
     * Returns QDialog::Accepted or QDialog::Rejected.
     **/
    int solveAndShowConflicts();
 
    /**
     * Run the package dependency solver for the currently installed system
     * plus the packages that are marked for installation (or update or...) and
     * open the conflict dialog if there are any conflicts.
     * Returns only when the conflict dialog is closed.
     *
     * Returns QDialog::Accepted or QDialog::Rejected.
     **/
    int verifySystem();
 
    /**
     * Mini-wizard to generate solver test case:
     *
     *   - Inform user what this is all about
     *   - Tell user where the files will go
     *   - Generate test case
     *   - Ask user if he would like to pack it all into y2logs.tgz
     *   - Prompt user for path for y2logs.tgz
     *   - Save y2logs.tgz
     **/
    void askCreateSolverTestCase();
 
    
signals:
 
    /**
     * Update package states - they may have changed.
     **/
    void updatePackages();
 
 
protected:
 
    /**
     * Initialize solving: Post "busy" popup etc.
     **/ 
    void prepareSolving();
 
    /**
     * Process the result of solving: Post conflict dialog, if neccessary.
     * 'success' is the return value of the preceding solver call.
     * Returns either QDialog::Accepted or QDialog::Rejected.
     **/
    int  processSolverResult( bool success );
    
    /**
     * Event handler for keyboard input.
     * Only very special keys are processed here.
     *
     * Inherited from QWidget.
     **/
    void keyPressEvent( QKeyEvent * e );
 
 
 
    //
    // Data members
    //
 
    YQPkgConflictList * _conflictList;
    QMenu *     _expertMenu;
    QLabel *            _busyPopup;
 
    double              _totalSolveTime;
    int                 _solveCount;
};
 
 
 
#endif // ifndef YQPkgConflictDialog_h