button-field.inc.php

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<?php
class ButtonField extends AbstractField
{
    protected $type = 'button'; 

    public function __construct($name, &$parentForm, array $attribs = array('type' => 'button'))
    {
        parent::__construct($name, $parentForm, $attribs); 
    }
    
    public function drawInput()
    {
        $extra = $this->extrasAsAttributes();
        echo "<input type='$this->type' value='$this->value' $extra/>";
    }

    public function __set($name, $value)
    {
        if ($type == 'type' && !preg_match('/(submit)|(reset)|(button)/', $value))
            throw new InvalidAttributeValueException($value);
        
        parent::__set($name, $value);
    }

    ####
    # All of the following are effective no-ops just to fully implement Field
    ####

    public function validate()
    {
        return; #No-Op
    }

    public function getData()
    {
        return; #No-Op
    }

    public function getSqlImpl()
    {
        return null; #No-Op
    }

    public function hasError()
    {
        return false; # Buttons are perfect and never have errors
    }

}
?>

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