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<?php |
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namespace Ingenerator\KohanaView; |
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use Ingenerator\KohanaView\Exception\UnspecifiedTemplateNameException; |
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/** |
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* The ViewTemplateSelector maps ViewModel classes to the appropriate template file. By default this is done by |
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* converting the class name to a lowercased file path such that: |
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* |
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* View_Model_Something_WithMixedCase => model/something/with_mixed_case |
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* \View\Stuff\In\NameSpace\Thing => stuff/in/name_space/thing |
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* \Other\View\Hierarchy => other/view/hierarchy |
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* \Other\View\HierarchyView => other/view/hierarchy |
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* \Other\View\HierarchyViewModel => other/view/hierarchy |
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* |
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* Views can also implement TemplateSpecifyingViewModel to provide a custom template file name when required. |
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* |
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* @author Andrew Coulton <[email protected]> |
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* @copyright 2015 inGenerator Ltd |
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* @license http://kohanaframework.org/license |
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*/ |
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class ViewTemplateSelector |
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{ |
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/** |
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* @param ViewModel $view |
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* |
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* @return string |
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*/ |
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public function getTemplateName(ViewModel $view) |
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{ |
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if ($view instanceof TemplateSpecifyingViewModel) { |
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return $this->validateSpecifiedTemplateName($view); |
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} else { |
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return $this->calculateTemplateFromClassName($view); |
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} |
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} |
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/** |
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* @param TemplateSpecifyingViewModel $view |
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* |
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* @return mixed |
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* @throws \UnexpectedValueException if no template is provided |
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*/ |
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protected function validateSpecifiedTemplateName(TemplateSpecifyingViewModel $view) |
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{ |
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$template = $view->getTemplateName(); |
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$view_class = get_class($view); |
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if ( ! $template) { |
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throw UnspecifiedTemplateNameException::forEmptyValue($view_class); |
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} |
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if ( ! is_string($template)) { |
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throw UnspecifiedTemplateNameException::forNonStringValue($view_class, $template); |
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} |
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return $template; |
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} |
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/** |
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* @param ViewModel $view |
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* |
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* @return string |
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*/ |
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protected function calculateTemplateFromClassName(ViewModel $view) |
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{ |
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$template = get_class($view); |
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$template = preg_replace('/\\\\|_/', '/', $template); |
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$template = preg_replace('#(^view/?(model)?/)|(?<!/)(view/?(model)?$)#i', '', $template); |
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$template = preg_replace('/([a-z])([A-Z])/', '\1_\2', $template); |
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$template = strtolower($template); |
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return $template; |
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} |
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} |
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ingenerator /
kohana-view
