Complex classes like PageManager often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use PageManager, and based on these observations, apply Extract Interface, too.
1 | <?php |
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25 | class PageManager extends TrackingManager |
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26 | { |
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27 | /** |
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28 | * The relative (to the stakx project) file path to the redirect template |
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29 | * |
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30 | * @var string|bool |
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31 | */ |
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32 | private $redirectTemplate; |
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33 | |||
34 | /** |
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35 | * @var PageView[] |
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36 | */ |
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37 | private $twigExtendsDeps; |
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38 | |||
39 | /** |
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40 | * @var ContentItem[][] |
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41 | */ |
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42 | private $collections; |
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43 | |||
44 | /** |
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45 | * @var Folder |
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46 | */ |
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47 | private $targetDir; |
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48 | |||
49 | /** |
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50 | * @var PageView[] |
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51 | */ |
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52 | private $flatPages; |
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53 | |||
54 | private $siteMenu; |
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55 | |||
56 | private $twigOpts; |
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57 | |||
58 | /** |
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59 | * @var \Twig_Environment |
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60 | */ |
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61 | private $twig; |
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62 | |||
63 | /** |
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64 | * PageManager constructor |
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65 | */ |
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66 | 1 | public function __construct() |
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67 | { |
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68 | 1 | parent::__construct(); |
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69 | |||
70 | 1 | $this->siteMenu = array(); |
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71 | 1 | } |
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72 | |||
73 | public function setCollections (&$collections) |
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74 | { |
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75 | if (empty($collections)) { return; } |
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76 | |||
77 | $this->collections = &$collections; |
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78 | } |
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79 | |||
80 | public function setRedirectTemplate ($filePath) |
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81 | { |
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82 | $this->redirectTemplate = $filePath; |
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83 | } |
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84 | |||
85 | /** |
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86 | * @param Folder $folder The relative target directory as specified from the configuration file |
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87 | */ |
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88 | 1 | public function setTargetFolder (&$folder) |
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92 | |||
93 | 1 | public function configureTwig ($configuration, $options) |
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100 | |||
101 | 1 | public function createTwigManager () |
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102 | { |
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103 | 1 | $twig = new TwigManager(); |
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104 | 1 | $twig->configureTwig( |
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105 | 1 | $this->twigOpts['configuration'], |
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106 | 1 | $this->twigOpts['options'] |
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107 | ); |
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108 | |||
109 | 1 | $this->twig = TwigManager::getInstance(); |
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110 | 1 | } |
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111 | |||
112 | public function getFlatPages () |
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113 | { |
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114 | return $this->flatPages; |
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115 | } |
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116 | |||
117 | /** |
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118 | * An array representing the website's menu structure with children and grandchildren made from static PageViews |
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119 | * |
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120 | * @return array |
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121 | */ |
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122 | public function getSiteMenu () |
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123 | { |
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124 | static $jailedMenu = array(); |
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125 | |||
126 | if (!empty($jailedMenu)) { |
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127 | return $jailedMenu; |
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128 | } |
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129 | |||
130 | foreach ($this->siteMenu as $key => $value) |
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131 | { |
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132 | // If it's an array, it means the parent is hidden from the site menu therefore its children should be too |
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133 | if (is_array($this->siteMenu[$key])) |
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134 | { |
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135 | continue; |
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136 | } |
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137 | |||
138 | $jailedMenu[$key] = $value->createJail(); |
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139 | } |
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140 | |||
141 | return $jailedMenu; |
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142 | } |
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143 | |||
144 | /** |
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145 | * Go through all of the PageView directories and create a respective PageView for each and classify them as a |
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146 | * dynamic or static PageView. |
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147 | * |
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148 | * @param $pageViewFolders |
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149 | */ |
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150 | 1 | public function parsePageViews ($pageViewFolders) |
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151 | { |
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152 | 1 | if (empty($pageViewFolders)) { return; } |
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153 | |||
154 | /** |
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155 | * The name of the folder where PageViews are located |
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156 | * |
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157 | * @var $pageViewFolder string |
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158 | */ |
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159 | 1 | foreach ($pageViewFolders as $pageViewFolderName) |
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160 | { |
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161 | 1 | $pageViewFolder = $this->fs->absolutePath($pageViewFolderName); |
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162 | |||
163 | 1 | if (!$this->fs->exists($pageViewFolder)) |
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164 | { |
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165 | continue; |
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166 | } |
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167 | |||
168 | // @TODO Replace this with a regular expression or have wildcard support |
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169 | 1 | $this->scanTrackableItems($pageViewFolder, array( |
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170 | 1 | 'refresh' => false, |
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171 | 'fileExplorer' => FileExplorer::INCLUDE_ONLY_FILES |
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172 | 1 | ), array('.html', '.twig')); |
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173 | 1 | $this->saveFolderDefinition($pageViewFolderName); |
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174 | } |
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175 | 1 | } |
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176 | |||
177 | /** |
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178 | * Compile dynamic and static PageViews |
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179 | */ |
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180 | 1 | public function compileAll () |
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181 | { |
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182 | 1 | foreach (array_keys($this->trackedItemsFlattened) as $filePath) |
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183 | { |
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184 | 1 | $this->compileFromFilePath($filePath); |
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185 | } |
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186 | 1 | } |
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187 | |||
188 | public function compileSome ($filter = array()) |
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189 | { |
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190 | /** @var PageView $pageView */ |
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191 | foreach ($this->trackedItemsFlattened as $pageView) |
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192 | { |
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193 | if ($pageView->hasTwigDependency($filter['namespace'], $filter['dependency'])) |
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194 | { |
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195 | $this->compilePageView($pageView); |
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196 | } |
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197 | } |
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198 | } |
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199 | |||
200 | /** |
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201 | * @param ContentItem $contentItem |
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202 | */ |
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203 | public function compileContentItem (&$contentItem) |
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204 | { |
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205 | $pageView = $contentItem->getPageView(); |
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206 | |||
207 | // This ContentItem doesn't have an individual PageView dedicated to displaying this item |
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208 | if (is_null($pageView)) |
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209 | { |
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210 | return; |
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211 | } |
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212 | |||
213 | $template = $this->createTemplate($pageView); |
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214 | $contentItem->evaluateFrontMatter( |
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215 | $pageView->getFrontMatter(false) |
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216 | ); |
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217 | |||
218 | $output = $template->render(array( |
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219 | 'this' => $contentItem |
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220 | )); |
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221 | |||
222 | $this->targetDir->writeFile($contentItem->getTargetFile(), $output); |
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223 | } |
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224 | |||
225 | /** |
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226 | * Add a new ContentItem to the respective parent PageView of the ContentItem |
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227 | * |
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228 | * @param ContentItem $contentItem |
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229 | */ |
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230 | public function updatePageView ($contentItem) |
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231 | { |
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232 | /** @var DynamicPageView $pageView */ |
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233 | foreach ($this->trackedItems['dynamic'] as &$pageView) |
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234 | { |
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235 | $fm = $pageView->getFrontMatter(false); |
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236 | |||
237 | if ($fm['collection'] == $contentItem->getCollection()) |
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238 | { |
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239 | $pageView->addContentItem($contentItem); |
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240 | } |
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241 | } |
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242 | } |
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243 | |||
244 | /** |
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245 | * Update an existing Twig variable that's injected globally |
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246 | * |
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247 | * @param string $variable |
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248 | * @param string $value |
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249 | */ |
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250 | public function updateTwigVariable ($variable, $value) |
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251 | { |
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252 | $this->twig->addGlobal($variable, $value); |
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253 | } |
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254 | |||
255 | /** |
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256 | * {@inheritdoc} |
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257 | */ |
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258 | 1 | public function isTracked($filePath) |
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262 | |||
263 | /** |
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264 | * {@inheritdoc} |
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265 | */ |
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266 | public function refreshItem($filePath) |
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267 | { |
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268 | if (parent::isTracked($filePath)) |
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269 | { |
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270 | $this->compileFromFilePath($filePath, true); |
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271 | |||
272 | return; |
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273 | } |
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274 | |||
275 | $this->createTwigManager(); |
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276 | |||
277 | foreach ($this->twigExtendsDeps[$filePath] as $pageView) |
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278 | { |
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279 | $this->compilePageView($pageView); |
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280 | } |
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281 | } |
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282 | |||
283 | /** |
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284 | * {@inheritdoc} |
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285 | */ |
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286 | 1 | protected function handleTrackableItem($filePath, $options = array()) |
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287 | { |
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288 | 1 | $pageView = PageView::create($filePath); |
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289 | 1 | $namespace = $pageView->getType(); |
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290 | |||
291 | 1 | if ($namespace == PageView::DYNAMIC_TYPE) |
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292 | { |
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293 | $frontMatter = $pageView->getFrontMatter(false); |
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294 | $collection = $frontMatter['collection']; |
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295 | |||
296 | foreach ($this->collections[$collection] as &$item) |
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297 | { |
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298 | $item->evaluateFrontMatter($frontMatter); |
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299 | $pageView->addContentItem($item); |
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300 | } |
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301 | } |
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302 | |||
303 | 1 | $this->addObjectToTracker($pageView, $pageView->getRelativeFilePath(), $namespace); |
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304 | 1 | $this->saveTrackerOptions($pageView->getRelativeFilePath(), array( |
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305 | 1 | 'viewType' => $namespace |
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306 | )); |
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307 | |||
308 | 1 | if ($namespace == PageView::STATIC_TYPE) |
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309 | { |
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310 | 1 | $this->addToSiteMenu($pageView); |
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311 | |||
312 | 1 | if (!empty($pageView->title)) { |
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313 | 1 | $this->flatPages[$pageView->title] = $pageView->createJail(); |
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314 | } |
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315 | } |
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316 | 1 | } |
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317 | |||
318 | /** |
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319 | * Compile a given PageView |
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320 | * |
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321 | * @param string $filePath The file path to the PageView to compile |
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322 | * @param bool $refresh When set to true, the PageView will reread its contents |
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323 | * |
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324 | * @throws \Exception |
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325 | */ |
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326 | 1 | private function compileFromFilePath ($filePath, $refresh = false) |
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327 | { |
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328 | 1 | if (!$this->isTracked($filePath)) |
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329 | { |
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330 | throw new TrackedItemNotFoundException('PageView not found'); |
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331 | } |
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332 | |||
333 | /** @var DynamicPageView|PageView|RepeaterPageView $pageView */ |
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334 | 1 | $pageView = &$this->trackedItemsFlattened[$filePath]; |
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335 | |||
336 | 1 | $this->compilePageView($pageView, $refresh); |
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337 | 1 | } |
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338 | |||
339 | /** |
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340 | * @param DynamicPageView|PageView|RepeaterPageView $pageView |
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341 | * @param bool $refresh |
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342 | */ |
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343 | 1 | private function compilePageView ($pageView, $refresh = false) |
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344 | { |
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345 | 1 | if ($refresh) |
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346 | { |
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347 | $pageView->refreshFileContent(); |
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348 | } |
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349 | |||
350 | 1 | switch ($pageView->getType()) |
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351 | { |
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352 | 1 | case PageView::REPEATER_TYPE: |
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353 | 1 | $this->compileRepeaterPageView($pageView); |
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354 | 1 | $this->compileExpandedRedirects($pageView); |
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355 | 1 | break; |
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356 | |||
357 | 1 | case PageView::DYNAMIC_TYPE: |
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358 | $this->compileDynamicPageView($pageView); |
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359 | $this->compileNormalRedirects($pageView); |
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360 | break; |
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361 | |||
362 | 1 | case PageView::STATIC_TYPE: |
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363 | 1 | $this->compileStaticPageView($pageView); |
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364 | 1 | $this->compileNormalRedirects($pageView); |
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365 | 1 | break; |
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366 | } |
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367 | 1 | } |
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368 | |||
369 | /** |
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370 | * @param RepeaterPageView $pageView |
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371 | */ |
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372 | 1 | private function compileRepeaterPageView (&$pageView) |
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373 | { |
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374 | 1 | $template = $this->createTemplate($pageView); |
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375 | 1 | $pageView->rewindPermalink(); |
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376 | |||
377 | 1 | foreach ($pageView->getRepeaterPermalinks() as $permalink) |
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378 | { |
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379 | 1 | $pageView->bumpPermalink(); |
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380 | 1 | $pageView->setFrontMatter(array( |
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381 | 1 | 'permalink' => $permalink->getEvaluated(), |
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382 | 1 | 'iterators' => $permalink->getIterators() |
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383 | )); |
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384 | |||
385 | 1 | $output = $template->render(array( |
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386 | 1 | 'this' => $pageView->createJail() |
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387 | )); |
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388 | |||
389 | 1 | $this->output->notice("Writing repeater file: {file}", array('file' => $pageView->getTargetFile())); |
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390 | 1 | $this->targetDir->writeFile($pageView->getTargetFile(), $output); |
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391 | } |
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392 | 1 | } |
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393 | |||
394 | /** |
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395 | * @param PageView $pageView |
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396 | */ |
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397 | private function compileDynamicPageView (&$pageView) |
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398 | { |
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399 | $template = $this->createTemplate($pageView); |
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400 | |||
401 | $pageViewFrontMatter = $pageView->getFrontMatter(false); |
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402 | $collection = $pageViewFrontMatter['collection']; |
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403 | |||
404 | /** @var ContentItem $contentItem */ |
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405 | foreach ($this->collections[$collection] as &$contentItem) |
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406 | { |
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407 | $output = $template->render(array( |
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408 | 'this' => $contentItem->createJail() |
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409 | )); |
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410 | |||
411 | $this->output->notice("Writing file: {file}", array('file' => $contentItem->getTargetFile())); |
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412 | $this->targetDir->writeFile($contentItem->getTargetFile(), $output); |
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413 | } |
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414 | } |
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415 | |||
416 | /** |
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417 | * @param PageView $pageView |
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418 | */ |
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419 | 1 | private function compileStaticPageView (&$pageView) |
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420 | { |
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421 | 1 | $this->twig->addGlobal('__currentTemplate', $pageView->getFilePath()); |
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422 | |||
423 | 1 | $template = $this->createTemplate($pageView); |
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424 | 1 | $output = $template->render(array( |
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425 | 1 | 'this' => $pageView->createJail() |
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426 | )); |
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427 | |||
428 | 1 | $this->output->notice("Writing file: {file}", array('file' => $pageView->getTargetFile())); |
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429 | 1 | $this->targetDir->writeFile($pageView->getTargetFile(), $output); |
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430 | 1 | } |
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431 | |||
432 | /** |
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433 | * @param DynamicPageView|PageView $pageView |
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434 | */ |
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435 | 1 | private function compileNormalRedirects (&$pageView) |
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436 | { |
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437 | 1 | foreach ($pageView->getRedirects() as $redirect) |
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438 | { |
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439 | $redirectPageView = PageView::createRedirect( |
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440 | $redirect, |
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441 | $pageView->getPermalink(), |
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442 | $this->redirectTemplate |
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443 | ); |
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444 | |||
445 | $this->compilePageView($redirectPageView); |
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446 | } |
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447 | 1 | } |
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448 | |||
449 | /** |
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450 | * @param RepeaterPageView $pageView |
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451 | */ |
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452 | 1 | private function compileExpandedRedirects (&$pageView) |
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453 | { |
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454 | 1 | $permalinks = $pageView->getRepeaterPermalinks(); |
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455 | |||
456 | /** @var ExpandedValue[] $repeaterRedirect */ |
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457 | 1 | foreach ($pageView->getRepeaterRedirects() as $repeaterRedirect) |
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458 | { |
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459 | /** |
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460 | * @var int $index |
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461 | * @var ExpandedValue $redirect |
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462 | */ |
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463 | foreach ($repeaterRedirect as $index => $redirect) |
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464 | { |
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465 | $redirectPageView = PageView::createRedirect( |
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466 | $redirect->getEvaluated(), |
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467 | $permalinks[$index]->getEvaluated(), |
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468 | $this->redirectTemplate |
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469 | ); |
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470 | |||
471 | $this->compilePageView($redirectPageView); |
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472 | } |
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473 | } |
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474 | 1 | } |
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475 | |||
476 | /** |
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477 | * Add a static PageView to the menu array. Dynamic PageViews are not added to the menu |
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478 | * |
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479 | * @param PageView $pageView |
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480 | */ |
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481 | 1 | private function addToSiteMenu (&$pageView) |
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482 | { |
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483 | 1 | $frontMatter = $pageView->getFrontMatter(); |
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484 | |||
485 | 1 | if (isset($frontMatter['menu']) && !$frontMatter['menu']) |
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486 | { |
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487 | return; |
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488 | } |
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489 | |||
490 | 1 | $url = trim($pageView->getPermalink(), '/'); |
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491 | |||
492 | 1 | if (empty($url)) |
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493 | { |
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494 | return; |
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495 | } |
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496 | |||
497 | 1 | $root = &$this->siteMenu; |
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498 | 1 | $dirs = explode('/', $url); |
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499 | |||
500 | 1 | while (count($dirs) > 0) |
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501 | { |
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502 | 1 | $name = array_shift($dirs); |
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503 | 1 | $name = (!empty($name)) ? $name : '.'; |
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504 | |||
505 | 1 | if (!is_null($name) && count($dirs) == 0) |
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506 | { |
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507 | 1 | if (isset($root[$name]) && is_array($root[$name])) |
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508 | { |
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509 | $children = &$pageView->getChildren(); |
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510 | $children = $root[$name]['children']; |
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511 | } |
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512 | |||
513 | 1 | $root[$name] = &$pageView; |
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514 | } |
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515 | else |
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516 | { |
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517 | $root[$name]['children'] = array(); |
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518 | $root = &$root[$name]['children']; |
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519 | } |
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520 | } |
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521 | 1 | } |
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522 | |||
523 | /** |
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524 | * @param PageView $pageView |
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525 | * |
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526 | * @return Twig_Template |
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527 | * @throws Twig_Error_Syntax |
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528 | */ |
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529 | 1 | private function createTemplate (&$pageView) |
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547 | |||
548 | /** |
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549 | * Find the parent Twig templates of the given template and keep a list of it |
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550 | * |
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551 | * @param Twig_Template $template The template created from the PageView's content |
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552 | * @param PageView $pageView The PageView that has this content. Used to keep a reference of PageViews |
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553 | */ |
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554 | 1 | private function trackParentTwigTemplate ($template, &$pageView) |
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555 | { |
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556 | 1 | if (!$this->tracking) { return; } |
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557 | |||
558 | /** @var Twig_Template $parent */ |
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559 | $parent = $template->getParent(array()); |
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560 | |||
561 | while ($parent !== false) |
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562 | { |
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563 | $filePath = $this->fs->getRelativePath($parent->getSourceContext()->getPath()); |
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564 | |||
569 | } |