src/libraries.cpp

Fri, 13 Dec 2019 15:55:56 +0200

author
Teemu Piippo <teemu@hecknology.net>
date
Fri, 13 Dec 2019 15:55:56 +0200
changeset 17
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parent 12
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child 22
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permissions
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1 #include <QSettings>
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2 #include "libraries.h"
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4 /**
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5 * @brief Constructs a new library manager
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6 * @param parent Parent object
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7 */
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8 LibraryManager::LibraryManager(QObject* parent):
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9 QAbstractTableModel{parent}
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10 {
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11 }
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13 /**
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14 * @brief Constructs a library manager from settings
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15 * @param settings Settings to construct from
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16 * @param parent Parent object
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17 */
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18 LibraryManager::LibraryManager(QSettings* settings, QObject* parent) :
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19 QAbstractTableModel{parent}
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20 {
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21 this->restoreFromSettings(settings);
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22 }
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24 /**
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25 * @brief Yields a begin-terator for the libraries
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26 * @return iterator
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27 */
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28 QVector<Library>::const_iterator LibraryManager::begin() const
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29 {
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30 return this->libraries.begin();
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31 }
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32
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33 /**
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34 * @brief Yields an end-iterator for the libraries
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35 * @return iterator
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36 */
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37 QVector<Library>::const_iterator LibraryManager::end() const
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38 {
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39 return this->libraries.end();
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40 }
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41
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42 /**
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43 * @brief Searches the libraries for the specified file name.
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44 * @param fileName File to search for
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45 * @return Full path to the file, or empty string if not found.
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46 */
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47 QString LibraryManager::findFile(QString fileName) const
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48 {
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49 QString path;
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50 fileName.replace("\\", "/");
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51 bool found = false;
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52 for (const Library& library : this->libraries)
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53 {
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54 for (const QString& subdirectory : {"parts", "p"})
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55 {
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56 QDir directory = library.path;
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57 directory.cd(subdirectory);
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58 QFileInfo fileInfo = directory.absoluteFilePath(fileName);
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59 if (fileInfo.exists() && fileInfo.isFile())
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60 {
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61 path = fileInfo.absoluteFilePath();
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62 found = true;
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63 break;
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64 }
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65 }
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66 if (found)
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67 {
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68 break;
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69 }
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70 }
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71 return path;
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72 }
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74 /**
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75 * @brief Adds a new library to the end of the libraries list.
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76 * @param library Library to add
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77 */
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78 void LibraryManager::addLibrary(const Library& library)
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79 {
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80 emit layoutAboutToBeChanged();
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81 libraries.append(library);
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82 emit layoutChanged();
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83 }
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85 /**
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86 * @brief Removes a library by index. Does nothing if the index is not valid.
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87 * @param libraryIndex Index of the library
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88 */
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89 void LibraryManager::removeLibrary(const int libraryIndex)
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90 {
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91 Q_ASSERT(isValidIndex(libraryIndex));
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92 if (isValidIndex(libraryIndex))
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93 {
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94 emit layoutAboutToBeChanged();
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95 libraries.remove(libraryIndex);
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96 emit layoutChanged();
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97 }
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98 }
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99
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100 /**
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101 * @brief Gets a library by index.
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102 * @warning Index is assumed to be valid.
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103 * @param libraryIndex Index of the library
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104 * @return const reference
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105 */
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106 const Library& LibraryManager::library(int libraryIndex) const
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107 {
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108 Q_ASSERT(isValidIndex(libraryIndex));
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109 return this->libraries[libraryIndex];
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110 }
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111
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112 /**
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113 * @brief Changes the path of the specified library
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114 * @param libraryIndex Index of the library
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115 * @param path New path
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116 */
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117 void LibraryManager::setLibraryPath(int libraryIndex, const QDir& path)
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118 {
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119 if (this->isValidIndex(libraryIndex))
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120 {
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121 this->libraries[libraryIndex].path = path;
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122 this->signalLibraryChange(libraryIndex);
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123 }
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124 }
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125
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126 /**
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127 * @brief Changes the role of the specified library
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128 * @param libraryIndex Index of the library
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129 * @param role New role
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130 */
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131 void LibraryManager::setLibraryRole(int libraryIndex, const Library::Role role)
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132 {
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133 if (this->isValidIndex(libraryIndex))
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134 {
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135 this->libraries[libraryIndex].role = role;
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136 this->signalLibraryChange(libraryIndex);
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137 }
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138 }
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139
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140 /**
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141 * @brief Restores the libraries from the specified settings object. All unsaved
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142 * changes are lost.
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143 * @param settings Settings object to restore from.
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144 */
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145 void LibraryManager::restoreFromSettings(QSettings* settings)
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146 {
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147 this->libraries = settings->value("libraries").value<Libraries>();
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148 }
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149
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150 /**
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151 * @brief Saves the libraries to the specified settings object.
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152 * @param settings Settings object to modify.
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153 */
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154 void LibraryManager::storeToSettings(QSettings* settings)
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155 {
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156 QVariant librariesValue = QVariant::fromValue(this->libraries);
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157 settings->setValue("libraries", librariesValue);
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158 }
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159
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160 /**
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161 * @returns the amount of libraries
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162 */
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163 int LibraryManager::count() const
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164 {
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165 return this->libraries.size();
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166 }
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167
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168 void LibraryManager::moveLibrary(const int libraryFromIndex, const int libraryToIndex)
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169 {
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170 if (isValidIndex(libraryFromIndex) and
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171 (isValidIndex(libraryToIndex) or libraryToIndex == count()) and
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172 libraryFromIndex != libraryToIndex)
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173 {
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174 emit layoutAboutToBeChanged();
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175 const Library library = this->library(libraryFromIndex);
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176 if (libraryToIndex > libraryFromIndex)
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177 {
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178 this->libraries.insert(libraryToIndex, library);
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179 this->libraries.removeAt(libraryFromIndex);
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180 }
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181 else if (libraryToIndex < libraryFromIndex)
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182 {
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183 this->libraries.removeAt(libraryFromIndex);
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184 this->libraries.insert(libraryToIndex, library);
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185 }
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186 emit layoutChanged();
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187 }
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188 }
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189
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190 /**
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191 * @brief Checks whether the specified index points to a valid library.
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192 * @param libraryIndex Index to check
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193 * @returns whether or not it is valid
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194 */
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195 bool LibraryManager::isValidIndex(const int libraryIndex) const
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196 {
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197 return libraryIndex >= 0 && libraryIndex < this->libraries.size();
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198 }
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199
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200 /**
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201 * @brief Gets a human-readable string for the specified role
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202 * @param role Role to get a string for
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203 * @returns string
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204 */
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205 QString Library::libraryRoleName(const Role role)
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206 {
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207 switch (role)
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208 {
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209 case Library::OfficialLibrary:
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210 return LibraryManager::tr("Official library");
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211 case Library::UnofficialLibrary:
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212 return LibraryManager::tr("Unofficial library");
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213 case Library::WorkingLibrary:
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214 return LibraryManager::tr("Working library");
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215 default:
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216 return "???";
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217 }
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218 }
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219
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220 /**
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221 * @brief Overload necessary to implement QAbstractTableModel
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222 * @param index
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223 * @return Item flags
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224 */
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225 Qt::ItemFlags LibraryManager::flags(const QModelIndex& index) const
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226 {
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227 Q_UNUSED(index);
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228 return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
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229 }
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230
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231 /**
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232 * @brief Returns data needed to represent the libraries in a table. This function
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233 * decides how data is represented in a table view.
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234 * @param index Index to get data for
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235 * @param role Role of the data (role as in Qt model-view role, not LDraw library role)
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236 * @returns variant
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237 */
7
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238 QVariant LibraryManager::data(const QModelIndex& index, int role) const
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239 {
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240 if (role != Qt::DisplayRole)
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241 {
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242 return {};
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243 }
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244 else
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245 {
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246 const int row = index.row();
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247 const Column column = static_cast<Column>(index.column());
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248 const Library& library = this->library(row);
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249 switch (column)
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250 {
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251 case RoleColumn:
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252 return Library::libraryRoleName(library.role);
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253 case PathColumn:
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254 return library.path.absolutePath();
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255 }
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256 return {};
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257 }
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258 }
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259
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260 /**
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261 * @brief Returns header texts for a table view. We only implement column headers here.
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262 * @param section Index of the column (can also be a row but we only have column headers)
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263 * @param orientation Orientation (we only support horizontal orientation)
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264 * @param role Role of the data (role as in Qt model-view role, not LDraw library role)
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265 * @returns variant
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266 */
7
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267 QVariant LibraryManager::headerData(int section, Qt::Orientation orientation, int role) const
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268 {
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269 if (orientation == Qt::Horizontal and role == Qt::DisplayRole)
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270 {
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271 switch(static_cast<Column>(section))
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272 {
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273 case PathColumn:
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274 return tr("Path");
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275 case RoleColumn:
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276 return tr("Role");
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277 }
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278 return {};
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279 }
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280 else
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281 {
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282 return {};
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283 }
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284 }
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285
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286 /**
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287 * @brief Overload necessary to implement QAbstractTableModel.
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288 * @returns how many rows there are in the table. Since there is one row per library, this returns
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289 * the amount of libraries.
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290 */
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291 int LibraryManager::rowCount(const QModelIndex&) const
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292 {
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293 return this->count();
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294 }
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295
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296 /**
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297 * @brief LibraryManager::columnCount
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298 * @returns how many columns there are in the table.
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299 */
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300 int LibraryManager::columnCount(const QModelIndex&) const
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301 {
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302 return 2;
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303 }
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304
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305 /**
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306 * @brief Signals view objects that the specified library has changed. This is necessary
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307 * to update the table widget know when libraries are changed.
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308 * @param libraryIndex Index of the library.
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309 */
7
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310 void LibraryManager::signalLibraryChange(int libraryIndex)
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311 {
8
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312 Q_ASSERT(isValidIndex(libraryIndex));
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313 const QModelIndex topLeft = this->index(libraryIndex, 0);
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314 const QModelIndex bottomRight = this->index(libraryIndex, columnCount({}) - 1);
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315 emit dataChanged(topLeft, bottomRight);
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316 }
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317
8
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318 /**
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319 * @brief Overload for operator<< to allow serializing a library into the configuration file.
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320 * @param stream Stream to write the library into
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321 * @param library Library to write into the stream
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322 * @returns the stream
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323 */
7
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324 QDataStream& operator<<(QDataStream& stream, const Library& library)
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325 {
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326 const QString path = library.path.absolutePath();
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327 const int role = static_cast<int>(library.role);
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328 return stream << path << role;
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329 }
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330
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331 /**
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332 * @brief Overload for operator>> to allow serializing a library into the configuration file.
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333 * @param stream Stream to read the library from
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334 * @param library Library to obtain from the stream
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335 * @returns the stream
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336 */
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337 QDataStream& operator>>(QDataStream& stream, Library& library)
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338 {
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339 QString path;
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340 int role;
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341 QDataStream& result = stream >> path >> role;
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342 library.path = path;
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343 library.role = static_cast<Library::Role>(role);
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344 return result;
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345 }

mercurial