1 /* |
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2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 |
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18 #ifndef RADIOSTATION_H_ |
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19 #define RADIOSTATION_H_ |
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20 |
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21 // System includes |
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22 #include <QString> |
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23 #include <QMetaType> |
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24 #include <QObject> |
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25 |
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26 // User includes |
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27 #include "radiouiengineexport.h" |
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28 #include "radio_global.h" |
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29 |
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30 // Constants |
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31 const int KLastCallSignCharCode = 25; |
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32 const uint KThreeLetterCallSignCount = 72; |
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33 const uint KKxxxCallSignPiFirst = 0x1000; |
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34 const uint KWxxxCallSignPiFirst = 0x54A8; |
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35 const uint KWxxxCallSignPiLast = 0x994F; |
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36 const uint KxxxCallSignPiFirst = 0x9950; |
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37 const uint KxxxCallSignPiLast = 0x99B9; |
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38 |
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39 // Forward declarations |
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40 class RadioStationPrivate; |
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41 |
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42 // Class declaration |
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43 |
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44 /*! |
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45 * RadioStation is a data container that holds all information of a radio station. |
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46 * It is implicitly shared to make it cheap to copy and pass around as a signal parameter. |
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47 * It uses the "shared null" idiom to initialize empty instances quickly and efficiently. |
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48 * |
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49 * Note! It is derived from QObject even though architecturally it shouldn't be. |
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50 * It is done only to satisfy the WINSCW build which doesn't export the destructor in UREL |
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51 * build. This causes mismatching def files and annoying warnings. Deriving from QObject fixes this |
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52 */ |
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53 class UI_ENGINE_DLL_EXPORT RadioStation : public QObject |
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54 { |
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55 friend class RadioStationModel; |
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56 friend class RadioStationModelPrivate; |
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57 friend class TestRadioUiEngine; |
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58 friend class TestRadioPresetStorage; |
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59 |
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60 public: |
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61 |
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62 /** |
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63 * Flags to indicate how the RadioStation has changed since last save or reset. |
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64 * Declared to use QFlags<> to ease flag usage and to enforce type safety |
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65 */ |
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66 enum ChangeFlag |
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67 { |
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68 NoChange = 0 |
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69 ,PersistentDataChanged = 1 << 0 |
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70 ,NameChanged = 1 << 1 |
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71 ,FavoriteChanged = 1 << 2 |
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72 ,GenreChanged = 1 << 3 |
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73 ,UrlChanged = 1 << 4 |
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74 ,TypeChanged = 1 << 5 |
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75 ,PiCodeChanged = 1 << 6 |
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76 ,PsTypeChanged = 1 << 7 |
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77 ,RadioTextChanged = 1 << 8 |
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78 ,DynamicPsChanged = 1 << 9 |
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79 }; |
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80 Q_DECLARE_FLAGS( Change, ChangeFlag ) |
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81 |
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82 /** |
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83 * Flags ot indicate station type. |
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84 * Declared to use QFlags<> to ease flag usage and to enforce type safety |
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85 */ |
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86 enum TypeFlag |
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87 { |
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88 Favorite = 1 << 0, |
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89 LocalStation = 1 << 1, |
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90 PreDefined = 1 << 2, |
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91 Temporary = 1 << 3 |
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92 }; |
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93 Q_DECLARE_FLAGS( Type, TypeFlag ) |
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94 |
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95 /** |
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96 * Flag to indiate whether or not station uses dynamic PS and if the check has been performed |
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97 * Declared to use QFlags<> to ease flag usage and to enforce type safety |
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98 */ |
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99 enum PsTypeFlag |
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100 { |
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101 Unknown, |
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102 Dynamic, |
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103 Static |
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104 }; |
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105 Q_DECLARE_FLAGS( PsType, PsTypeFlag ) |
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106 |
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107 /** |
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108 * Magical values used as preset indexes to signify certain conditions. |
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109 * NotFound means that a find function could not find a station |
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110 * Invalid means that the station instance has not been initialized |
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111 */ |
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112 enum PresetFlag { NotFound = -1, Invalid = -100, SharedNull = -200 }; |
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113 |
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114 /** |
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115 * Static convenience function to parse a frequency |
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116 */ |
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117 static QString parseFrequency( uint frequency ); |
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118 |
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119 RadioStation(); |
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120 RadioStation( const RadioStation& other ); |
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121 |
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122 ~RadioStation(); |
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123 |
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124 RadioStation& operator=( const RadioStation& other ); |
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125 |
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126 public: |
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127 |
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128 explicit RadioStation( int presetIndex, uint frequency ); |
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129 |
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130 void reset(); |
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131 void setChangeFlags( Change flags ); |
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132 |
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133 // Setters for persistent data |
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134 void setPresetIndex( int presetIndex ); |
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135 void setFrequency( uint frequency ); |
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136 void setName( const QString& name ); |
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137 void setGenre( const int genre ); |
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138 void setUrl( const QString& url ); |
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139 bool setPiCode( int piCode, RadioRegion::Region region ); |
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140 |
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141 // Setters for non-persistent data |
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142 void setPsType( PsType psType ); |
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143 void setRadioText( const QString& radioText ); |
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144 void setRadioTextPlus( const int rtPlusClass, const QString& rtPlusItem ); |
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145 void setDynamicPsText( const QString& dynamicPsText ); |
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146 |
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147 public: // Getters and setters |
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148 |
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149 // Setters & Getters for persistent data |
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150 |
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151 bool isValid() const; |
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152 |
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153 QString name() const; |
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154 void setUserDefinedName( const QString& name ); |
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155 bool isRenamed() const; |
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156 |
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157 int genre() const; |
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158 |
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159 QString frequencyMhz() const; |
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160 uint frequency() const; |
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161 int presetIndex() const; |
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162 |
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163 void setFavorite( bool favorite ); |
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164 bool isFavorite() const; |
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165 |
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166 QString url() const; |
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167 |
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168 bool hasPiCode() const; |
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169 bool hasRds() const; |
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170 |
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171 void setType( RadioStation::Type type ); |
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172 void unsetType( RadioStation::Type type ); |
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173 bool isType( RadioStation::Type type ) const; |
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174 |
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175 // Getters for non-persistent data |
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176 |
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177 PsType psType() const; |
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178 QString radioText() const; |
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179 QString dynamicPsText() const; |
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180 Change changeFlags() const; |
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181 bool hasDataChanged( Change flags ) const; |
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182 bool hasChanged() const; |
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183 void resetChangeFlags(); |
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184 |
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185 private: |
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186 |
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187 /** |
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188 * Decrements the reference count of the implicitly shared data. |
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189 * Data is deleted if no instance uses it anymore. |
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190 */ |
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191 void decrementReferenceCount(); |
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192 |
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193 // Methods for converting PI code into call sign |
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194 QString piCodeToCallSign( uint programmeIdentification ); |
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195 QString iterateCallSign( int piBase, int programmeIdentification ); |
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196 QString callSignString( uint programmeIdentification ); |
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197 char callSignChar( uint decimalValue ); |
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198 |
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199 private: // data |
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200 |
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201 /** |
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202 * Pointer to the implicitly shared private implementation |
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203 * Own. |
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204 */ |
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205 class RadioStationPrivate* mData; |
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206 |
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207 public: |
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208 |
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209 /** |
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210 * Detach from the implicitly shared data |
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211 */ |
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212 void detach(); |
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213 |
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214 /** |
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215 * Checks if the class is detached from implicitly shared data |
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216 * Required by many QT convenience functions for implicitly shared classes |
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217 */ |
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218 bool isDetached() const; |
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219 |
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220 typedef RadioStationPrivate* DataPtr; |
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221 inline DataPtr &data_ptr() { return mData; } |
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222 |
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223 }; |
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224 |
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225 Q_DECLARE_OPERATORS_FOR_FLAGS( RadioStation::Change ) |
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226 Q_DECLARE_OPERATORS_FOR_FLAGS( RadioStation::Type ) |
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227 |
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228 Q_DECLARE_TYPEINFO( RadioStation, Q_MOVABLE_TYPE ); // Can be moved around in memory by containers if necessary |
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229 Q_DECLARE_SHARED( RadioStation ) // Uses implicit sharing |
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230 Q_DECLARE_METATYPE( RadioStation ) // To be usable in a QVariant |
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231 |
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232 #endif // RADIOSTATION_H_ |
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