kworship/css/KwCssStyleStates.h

   1 /***************************************************************************
   2  *   This file is part of KWorship.                                        *
   3  *   Copyright 2008 James Hogan <james@albanarts.com>                      *
   4  *                                                                         *
   5  *   KWorship is free software: you can redistribute it and/or modify      *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation, either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   KWorship is distributed in the hope that it will be useful,           *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with KWorship.  If not, write to the Free Software Foundation,  *
  17  *   Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.   *
  18  ***************************************************************************/
  19
  20 #ifndef _KwCssStyleStates_h_
  21 #define _KwCssStyleStates_h_
  22
  23 /**
  24  * @file KwCssStyleStates.h
  25  * @brief Set of cascading style property states.
  26  * @author James Hogan <james@albanarts.com>
  27  */
  28
  29 #include "KwCssStyle.h"
  30
  31 #include <kdemacros.h>
  32
  33 #include <QHash>
  34
  35 #include <cassert>
  36
  37 class KwCssAbstractStyleState;
  38
  39 /// Set of cascading style properties.
  40 class KDE_EXPORT KwCssStyleStates
  41 {
  42   public:
  43
  44     /*
  45      * Constructors + destructors
  46      */
  47
  48     /// Default constructor.
  49     KwCssStyleStates();
  50
  51     /// Copy constructor.
  52     KwCssStyleStates(const KwCssStyleStates& other);
  53
  54     /// Destructor.
  55     virtual ~KwCssStyleStates();
  56
  57     /*
  58      * Main interface
  59      */
  60
  61     /// Clear all states.
  62     void clear();
  63
  64     /// Get a state.
  65     const KwCssAbstractStyleState* getRawStyle(QString name) const;
  66
  67     /// Get the value of a state.
  68     template <typename T>
  69     T getStyle(QString name) const
  70     {
  71       const KwCssAbstractStyleState* rawStyle = getRawStyle(name);
  72       if (0 != rawStyle)
  73       {
  74         const KwCssStyleState<T>* style = dynamic_cast<const KwCssStyleState<T>*>(rawStyle);
  75         assert(0 != style &&"style with incorrect type");
  76         if (0 != style)
  77         {
  78           return style->getValue();
  79         }
  80       }
  81       return T();
  82     }
  83
  84     /*
  85      * Operators
  86      */
  87
  88     /// Copy assignment operator.
  89     KwCssStyleStates& operator = (const KwCssStyleStates& other);
  90
  91     /// Index into styles mapping.
  92     KwCssAbstractStyleState*& operator [] (QString name);
  93
  94   private:
  95
  96     /*
  97      * Types
  98      */
  99
 100     /// Dictionary of strings to styles.
 101     typedef QHash<QString, KwCssAbstractStyleState*> StyleStateDictionary;
 102
 103     /*
 104      * Variables
 105      */
 106
 107     /// The style properties.
 108     StyleStateDictionary m_styleStates;
 109
 110 };
 111
 112 #endif // _KwCssStyleStates_h_
 113