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   1  <?php
   2  
   3  final class PhabricatorNavigationRemarkupRule extends PhutilRemarkupRule {
   4  
   5    public function getPriority() {
   6      return 200.0;
   7    }
   8  
   9    public function apply($text) {
  10      return preg_replace_callback(
  11        '@{nav\b((?:[^}\\\\]+|\\\\.)*)}@m',
  12        array($this, 'markupNavigation'),
  13        $text);
  14    }
  15  
  16    public function markupNavigation($matches) {
  17      if (!$this->isFlatText($matches[0])) {
  18        return $matches[0];
  19      }
  20  
  21      $elements = ltrim($matches[1], ", \n");
  22      $elements = explode('>', $elements);
  23  
  24      $defaults = array(
  25        'name' => null,
  26        'type' => 'link',
  27        'href' => null,
  28        'icon' => null,
  29      );
  30  
  31      $sequence = array();
  32      $parser = new PhutilSimpleOptions();
  33      foreach ($elements as $element) {
  34        if (strpos($element, '=') === false) {
  35          $sequence[] = array(
  36            'name' => trim($element),
  37          ) + $defaults;
  38        } else {
  39          $sequence[] = $parser->parse($element) + $defaults;
  40        }
  41      }
  42  
  43      if ($this->getEngine()->isTextMode()) {
  44        return implode(' > ', ipull($sequence, 'name'));
  45      }
  46  
  47      static $icon_names;
  48      if (!$icon_names) {
  49        $icon_names = array_fuse(PHUIIconView::getFontIcons());
  50      }
  51  
  52      $out = array();
  53      foreach ($sequence as $item) {
  54        $item_name = $item['name'];
  55        $item_color = PHUITagView::COLOR_GREY;
  56        if ($item['type'] == 'instructions') {
  57          $item_name = phutil_tag('em', array(), $item_name);
  58          $item_color = PHUITagView::COLOR_INDIGO;
  59        }
  60  
  61        $tag = id(new PHUITagView())
  62          ->setType(PHUITagView::TYPE_SHADE)
  63          ->setShade($item_color)
  64          ->setName($item_name);
  65  
  66        if ($item['icon']) {
  67          $icon_name = 'fa-'.$item['icon'];
  68          if (isset($icon_names[$icon_name])) {
  69            $tag->setIcon($icon_name);
  70          }
  71        }
  72  
  73        if ($item['href'] !== null) {
  74          if (PhabricatorEnv::isValidWebResource($item['href'])) {
  75            $tag->setHref($item['href']);
  76            $tag->setExternal(true);
  77          }
  78        }
  79  
  80        $out[] = $tag;
  81      }
  82  
  83      if ($this->getEngine()->isHTMLMailMode()) {
  84        $arrow_attr = array(
  85          'style' => 'color: #92969D;',
  86        );
  87        $nav_attr = array();
  88      } else {
  89        $arrow_attr = array(
  90          'class' => 'remarkup-nav-sequence-arrow',
  91        );
  92        $nav_attr = array(
  93          'class' => 'remarkup-nav-sequence',
  94        );
  95      }
  96  
  97      $joiner = phutil_tag(
  98        'span',
  99        $arrow_attr,
 100        " \xE2\x86\x92 ");
 101  
 102      $out = phutil_implode_html($joiner, $out);
 103  
 104      $out = phutil_tag(
 105        'span',
 106        $nav_attr,
 107        $out);
 108  
 109      return $this->getEngine()->storeText($out);
 110    }
 111  
 112  }