TbWidget.php

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<?php
abstract class TbWidget extends CWidget {

        const CTX_DEFAULT = 'default';
        const CTX_PRIMARY = 'primary';
        const CTX_SUCCESS = 'success';
        const CTX_INFO = 'info';
        const CTX_WARNING = 'warning';
        const CTX_DANGER = 'danger';
        
        const CTX_DEFAULT_CLASS = 'default';
        const CTX_PRIMARY_CLASS = 'primary';
        const CTX_SUCCESS_CLASS = 'success';
        const CTX_INFO_CLASS = 'info';
        const CTX_WARNING_CLASS = 'warning';
        const CTX_DANGER_CLASS = 'danger';
        
        public $context = self::CTX_DEFAULT;
        
        protected static function addCssClass(&$htmlOptions, $class) {
                
                if (empty($class))
                        return;
        
                if (isset($htmlOptions['class']))
                        $htmlOptions['class'] .= ' ' . $class;
                else 
                        $htmlOptions['class'] = $class;
        }

        protected function isValidContext($cotext = false) {
                if($cotext)
                        return defined(get_called_class().'::CTX_'.strtoupper($context));
                else
                        return defined(get_called_class().'::CTX_'.strtoupper($this->context));
        }
        
        protected function getContextClass($context = false) {
                if($context)
                        return constant(get_called_class().'::CTX_'.strtoupper($context).'_CLASS');
                else
                        return constant(get_called_class().'::CTX_'.strtoupper($this->context).'_CLASS');
        }
}