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 | } |