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<?php |
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namespace SilverStripe\CMS\Forms; |
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use Page; |
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use SilverStripe\Control\HTTPRequest; |
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use SilverStripe\Forms\TextField; |
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/** |
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* Assists with selecting anchors on a given page |
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*/ |
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class AnchorSelectorField extends TextField |
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{ |
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protected $schemaComponent = 'AnchorSelectorField'; |
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private static $allowed_actions = [ |
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'anchors', |
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]; |
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private static $url_handlers = [ |
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'anchors/$PageID' => 'anchors', |
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]; |
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public function getSchemaDataDefaults() |
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{ |
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$schema = parent::getSchemaDataDefaults(); |
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$schema['data']['endpoint'] = $this->Link('anchors/:id'); |
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return $schema; |
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} |
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/** |
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* Find all anchors available on the given page. |
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* |
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* @param HTTPRequest $request |
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* @return array |
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*/ |
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public function anchors(HTTPRequest $request) |
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{ |
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$id = (int)$this->getRequest()->param('PageID'); |
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$anchors = $this->getAnchorsInPage($id); |
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return json_encode($anchors); |
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} |
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/** |
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* Get anchors in the given page ID |
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* |
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* @param int $id |
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* @return array |
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*/ |
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protected function getAnchorsInPage($id) |
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{ |
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// Check page is accessible |
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$page = Page::get()->byID($id); |
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if (!$page || !$page->canView()) { |
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return []; |
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} |
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// Similar to the regex found in HtmlEditorField.js / getAnchors method. |
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$parseSuccess = preg_match_all( |
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"/\\s+(name|id)\\s*=\\s*([\"'])([^\\2\\s>]*?)\\2|\\s+(name|id)\\s*=\\s*([^\"']+)[\\s +>]/im", |
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$page->Content, |
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$matches |
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); |
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if (!$parseSuccess) { |
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return []; |
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} |
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// Cleanup results |
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return array_values(array_unique(array_filter(array_merge($matches[3], $matches[5])))); |
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} |
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} |
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silverstripe /
silverstripe-cms
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