433 lines
10 KiB
PHP
433 lines
10 KiB
PHP
<?php namespace System;
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class Form {
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/**
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* Stores labels names.
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*
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* @var array
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*/
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private static $labels = array();
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/**
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* Open a HTML form.
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*
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* @param string $action
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* @param string $method
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* @param array $attributes
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* @param bool $https
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* @return string
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*/
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public static function open($action = null, $method = 'POST', $attributes = array(), $https = false)
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{
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$attributes['action'] = HTML::entities(URL::to(((is_null($action)) ? Request::uri() : $action), $https));
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// If the request method is PUT or DELETE, we'll default the request method to POST
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// since the request method is being spoofed by the form.
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$attributes['method'] = ($method == 'PUT' or $method == 'DELETE') ? 'POST' : $method;
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if ( ! array_key_exists('accept-charset', $attributes))
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{
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$attributes['accept-charset'] = Config::get('application.encoding');
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}
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$html = '<form'.HTML::attributes($attributes).'>';
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// If the request method is PUT or DELETE, create a hidden input element with the
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// request method in it since HTML forms do not support these two methods.
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if ($method == 'PUT' or $method == 'DELETE')
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{
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$html .= PHP_EOL.static::input('hidden', 'REQUEST_METHOD', $method);
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}
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return $html.PHP_EOL;
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}
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/**
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* Open a HTML form with a HTTPS action.
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*
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* @param string $action
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* @param string $method
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* @param array $attributes
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* @return string
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*/
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public static function open_secure($action = null, $method = 'POST', $attributes = array())
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{
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return static::open($action, $method, $attributes, true);
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}
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/**
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* Open a HTML form that accepts file uploads.
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*
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* @param string $action
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* @param string $method
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* @param array $attributes
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* @param bool $https
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* @return string
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*/
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public static function open_for_files($action = null, $method = 'POST', $attributes = array(), $https = false)
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{
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$attributes['enctype'] = 'multipart/form-data';
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return static::open($action, $method, $attributes, $https);
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}
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/**
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* Open a HTML form that accepts file uploads with a HTTPS action.
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*
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* @param string $action
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* @param string $method
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* @param array $attributes
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* @return string
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*/
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public static function open_secure_for_files($action = null, $method = 'POST', $attributes = array())
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{
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return static::open_for_files($action, $method, $attributes, true);
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}
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/**
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* Close a HTML form.
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*
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* @return string
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*/
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public static function close()
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{
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return '</form>';
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}
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/**
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* Generate a hidden field containing the current CSRF token.
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*
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* @return string
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*/
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public static function token()
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{
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return static::input('hidden', 'csrf_token', static::raw_token());
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}
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/**
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* Retrieve the current CSRF token.
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*
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* @return string
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*/
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public static function raw_token()
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{
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if (Config::get('session.driver') == '')
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{
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throw new \Exception('Sessions must be enabled to retrieve a CSRF token.');
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}
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return Session::get('csrf_token');
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}
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/**
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* Create a HTML label element.
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*
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* @param string $name
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* @param string $value
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* @param array $attributes
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* @return string
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*/
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public static function label($name, $value, $attributes = array())
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{
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static::$labels[] = $name;
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return '<label for="'.$name.'"'.HTML::attributes($attributes).'>'.HTML::entities($value).'</label>'.PHP_EOL;
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}
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/**
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* Create a HTML input element.
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*
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* @param string $name
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* @param mixed $value
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* @param array $attributes
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* @return string
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*/
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public static function input($type, $name, $value = null, $attributes = array())
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{
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return '<input'.HTML::attributes(array_merge($attributes, array('type' => $type, 'name' => $name, 'value' => $value, 'id' => static::id($name, $attributes)))).'>'.PHP_EOL;
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}
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/**
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* Create a HTML text input element.
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*
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* @param string $name
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* @param string $value
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* @param array $attributes
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* @return string
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*/
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public static function text($name, $value = null, $attributes = array())
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{
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return static::input('text', $name, $value, $attributes);
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}
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/**
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* Create a HTML password input element.
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*
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* @param string $name
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* @param array $attributes
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* @return string
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*/
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public static function password($name, $attributes = array())
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{
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return static::input('password', $name, null, $attributes);
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}
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/**
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* Create a HTML hidden input element.
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*
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* @param string $name
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* @param string $value
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* @param array $attributes
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* @return string
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*/
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public static function hidden($name, $value = null, $attributes = array())
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{
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return static::input('hidden', $name, $value, $attributes);
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}
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/**
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* Create a HTML search input element.
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*
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* @param string $name
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* @param string $value
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* @param array $attributes
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* @return string
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*/
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public static function search($name, $value = null, $attributes = array())
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{
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return static::input('search', $name, $value, $attributes);
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}
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/**
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* Create a HTML email input element.
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*
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* @param string $name
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* @param string $value
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* @param array $attributes
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* @return string
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*/
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public static function email($name, $value = null, $attributes = array())
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{
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return static::input('email', $name, $value, $attributes);
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}
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/**
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* Create a HTML telephone input element.
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*
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* @param string $name
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* @param string $value
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* @param array $attributes
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* @return string
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*/
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public static function telephone($name, $value = null, $attributes = array())
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{
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return static::input('tel', $name, $value, $attributes);
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}
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/**
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* Create a HTML URL input element.
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*
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* @param string $name
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* @param string $value
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* @param array $attributes
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* @return string
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*/
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public static function url($name, $value = null, $attributes = array())
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{
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return static::input('url', $name, $value, $attributes);
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}
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/**
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* Create a HTML number input element.
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*
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* @param string $name
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* @param string $value
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* @param array $attributes
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* @return string
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*/
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public static function number($name, $value = null, $attributes = array())
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{
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return static::input('number', $name, $value, $attributes);
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}
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/**
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* Create a HTML file input element.
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*
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* @param string $name
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* @param array $attributes
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* @return string
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*/
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public static function file($name, $attributes = array())
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{
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return static::input('file', $name, null, $attributes);
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}
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/**
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* Create a HTML textarea element.
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*
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* @param string $name
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* @param string $value
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* @param array $attributes
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* @return string
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*/
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public static function textarea($name, $value = '', $attributes = array())
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{
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$attributes = array_merge($attributes, array('id' => static::id($name, $attributes), 'name' => $name));
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if ( ! isset($attributes['rows']))
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{
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$attributes['rows'] = 10;
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}
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if ( ! isset($attributes['cols']))
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{
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$attributes['cols'] = 50;
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}
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return '<textarea'.HTML::attributes($attributes).'>'.HTML::entities($value).'</textarea>'.PHP_EOL;
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}
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/**
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* Create a HTML select element.
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*
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* @param string $name
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* @param array $options
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* @param string $selected
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* @param array $attributes
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* @return string
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*/
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public static function select($name, $options = array(), $selected = null, $attributes = array())
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{
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$attributes = array_merge($attributes, array('id' => static::id($name, $attributes), 'name' => $name));
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$html = array();
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foreach ($options as $value => $display)
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{
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$html[] = '<option'.HTML::attributes(array('value' => HTML::entities($value), 'selected' => ($value == $selected) ? 'selected' : null)).'>'.HTML::entities($display).'</option>';
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}
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return '<select'.HTML::attributes($attributes).'>'.implode('', $html).'</select>'.PHP_EOL;
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}
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/**
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* Create a HTML checkbox input element.
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*
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* @param string $name
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* @param string $value
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* @param bool $checked
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* @param array $attributes
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* @return string
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*/
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public static function checkbox($name, $value = null, $checked = false, $attributes = array())
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{
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return static::checkable('checkbox', $name, $value, $checked, $attributes);
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}
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/**
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* Create a HTML radio button input element.
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*
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* @param string $name
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* @param string $value
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* @param bool $checked
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* @param array $attributes
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* @return string
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*/
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public static function radio($name, $value = null, $checked = false, $attributes = array())
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{
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return static::checkable('radio', $name, $value, $checked, $attributes);
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}
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/**
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* Create a checkable input element.
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*
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* @param string $type
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* @param string $name
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* @param string $value
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* @param bool $checked
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* @param array $attributes
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* @return string
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*/
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private static function checkable($type, $name, $value, $checked, $attributes)
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{
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$attributes = array_merge($attributes, array('id' => static::id($name, $attributes), 'checked' => ($checked) ? 'checked' : null));
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return static::input($type, $name, $value, $attributes);
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}
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/**
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* Create a HTML submit input element.
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*
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* @param string $value
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* @param array $attributes
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* @return string
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*/
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public static function submit($value, $attributes = array())
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{
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return static::input('submit', null, $value, $attributes);
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}
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/**
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* Create a HTML reset input element.
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*
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* @param string $value
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* @param array $attributes
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* @return string
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*/
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public static function reset($value, $attributes = array())
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{
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return static::input('reset', null, $value, $attributes);
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}
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/**
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* Create a HTML image input element.
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*
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* @param string $url
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* @param array $attributes
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* @return string
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*/
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public static function image($url, $name = null, $attributes = array())
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{
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$attributes['src'] = URL::to_asset($url);
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return static::input('image', $name, null, $attributes);
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}
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/**
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* Create a HTML button element.
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*
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* @param string $name
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* @param string $value
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* @param array $attributes
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* @return string
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*/
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public static function button($value, $attributes = array())
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{
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return '<button'.HTML::attributes($attributes).'>'.HTML::entities($value).'</button>'.PHP_EOL;
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}
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/**
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* Determine the ID attribute for a form element.
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*
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* An explicitly specified ID in the attributes takes first precedence, then
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* the label names will be checked for a label matching the element name.
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*
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* @param string $name
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* @param array $attributes
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* @return mixed
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*/
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private static function id($name, $attributes)
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{
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if (array_key_exists('id', $attributes))
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{
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return $attributes['id'];
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}
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if (in_array($name, static::$labels))
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{
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return $name;
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}
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}
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} |