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  1: <?php
  2: 
  3: /**
  4:  * This file is part of the Nette Framework (http://nette.org)
  5:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
  6:  */
  7: 
  8: namespace Nette\Forms;
  9: 
 10: use Nette,
 11:     Nette\Utils\Strings,
 12:     Nette\Utils\Html;
 13: 
 14: 
 15: /**
 16:  * Forms helpers.
 17:  *
 18:  * @author     David Grudl
 19:  */
 20: class Helpers extends Nette\Object
 21: {
 22:     private static $unsafeNames = array(
 23:         'attributes', 'children', 'elements', 'focus', 'length', 'reset', 'style', 'submit', 'onsubmit', 'form',
 24:         'presenter', 'action',
 25:     );
 26: 
 27: 
 28:     /**
 29:      * Extracts and sanitizes submitted form data for single control.
 30:      * @param  array   submitted data
 31:      * @param  string  control HTML name
 32:      * @param  string  type Form::DATA_TEXT, DATA_LINE, DATA_FILE, DATA_KEYS
 33:      * @return string|string[]
 34:      * @internal
 35:      */
 36:     public static function extractHttpData(array $data, $htmlName, $type)
 37:     {
 38:         $name = explode('[', str_replace(array('[]', ']', '.'), array('', '', '_'), $htmlName));
 39:         $data = Nette\Utils\Arrays::get($data, $name, NULL);
 40:         $itype = $type & ~Form::DATA_KEYS;
 41: 
 42:         if (substr($htmlName, -2) === '[]') {
 43:             if (!is_array($data)) {
 44:                 return array();
 45:             }
 46:             foreach ($data as $k => $v) {
 47:                 $data[$k] = $v = static::sanitize($itype, $v);
 48:                 if ($v === NULL) {
 49:                     unset($data[$k]);
 50:                 }
 51:             }
 52:             if ($type & Form::DATA_KEYS) {
 53:                 return $data;
 54:             }
 55:             return array_values($data);
 56:         } else {
 57:             return static::sanitize($itype, $data);
 58:         }
 59:     }
 60: 
 61: 
 62:     private static function sanitize($type, $value)
 63:     {
 64:         if ($type === Form::DATA_TEXT) {
 65:             return is_scalar($value) ? Strings::normalizeNewLines($value) : NULL;
 66: 
 67:         } elseif ($type === Form::DATA_LINE) {
 68:             return is_scalar($value) ? Strings::trim(strtr($value, "\r\n", '  ')) : NULL;
 69: 
 70:         } elseif ($type === Form::DATA_FILE) {
 71:             return $value instanceof Nette\Http\FileUpload ? $value : NULL;
 72: 
 73:         } else {
 74:             throw new Nette\InvalidArgumentException('Unknown data type');
 75:         }
 76:     }
 77: 
 78: 
 79:     /**
 80:      * Converts control name to HTML name.
 81:      * @return string
 82:      */
 83:     public static function generateHtmlName($id)
 84:     {
 85:         $name = str_replace(Nette\ComponentModel\IComponent::NAME_SEPARATOR, '][', $id, $count);
 86:         if ($count) {
 87:             $name = substr_replace($name, '', strpos($name, ']'), 1) . ']';
 88:         }
 89:         if (is_numeric($name) || in_array($name, self::$unsafeNames, TRUE)) {
 90:             $name = '_' . $name;
 91:         }
 92:         return $name;
 93:     }
 94: 
 95: 
 96:     /**
 97:      * @return array
 98:      */
 99:     public static function exportRules(Rules $rules)
100:     {
101:         $payload = array();
102:         foreach ($rules as $rule) {
103:             if (!is_string($op = $rule->validator)) {
104:                 if (!Nette\Utils\Callback::isStatic($op)) {
105:                     continue;
106:                 }
107:                 $op = Nette\Utils\Callback::toString($op);
108:             }
109:             if ($rule->branch) {
110:                 $item = array(
111:                     'op' => ($rule->isNegative ? '~' : '') . $op,
112:                     'rules' => static::exportRules($rule->branch),
113:                     'control' => $rule->control->getHtmlName()
114:                 );
115:                 if ($rule->branch->getToggles()) {
116:                     $item['toggle'] = $rule->branch->getToggles();
117:                 }
118:             } else {
119:                 $item = array('op' => ($rule->isNegative ? '~' : '') . $op, 'msg' => Validator::formatMessage($rule, FALSE));
120:             }
121: 
122:             if (is_array($rule->arg)) {
123:                 foreach ($rule->arg as $key => $value) {
124:                     $item['arg'][$key] = $value instanceof IControl ? array('control' => $value->getHtmlName()) : $value;
125:                 }
126:             } elseif ($rule->arg !== NULL) {
127:                 $item['arg'] = $rule->arg instanceof IControl ? array('control' => $rule->arg->getHtmlName()) : $rule->arg;
128:             }
129: 
130:             $payload[] = $item;
131:         }
132:         return $payload;
133:     }
134: 
135: 
136:     /**
137:      * @return string
138:      */
139:     public static function createInputList(array $items, array $inputAttrs = NULL, array $labelAttrs = NULL, $wrapper = NULL)
140:     {
141:         list($inputAttrs, $inputTag) = self::prepareAttrs($inputAttrs, 'input');
142:         list($labelAttrs, $labelTag) = self::prepareAttrs($labelAttrs, 'label');
143:         $res = '';
144:         $input = Html::el();
145:         $label = Html::el();
146:         list($wrapper, $wrapperEnd) = $wrapper instanceof Html ? array($wrapper->startTag(), $wrapper->endTag()) : array((string) $wrapper, '');
147: 
148:         foreach ($items as $value => $caption) {
149:             foreach ($inputAttrs as $k => $v) {
150:                 $input->attrs[$k] = isset($v[$value]) ? $v[$value] : NULL;
151:             }
152:             foreach ($labelAttrs as $k => $v) {
153:                 $label->attrs[$k] = isset($v[$value]) ? $v[$value] : NULL;
154:             }
155:             $input->value = $value;
156:             $res .= ($res === '' && $wrapperEnd === '' ? '' : $wrapper)
157:                 . $labelTag . $label->attributes() . '>'
158:                 . $inputTag . $input->attributes() . (Html::$xhtml ? ' />' : '>')
159:                 . ($caption instanceof Html ? $caption : htmlspecialchars($caption, ENT_NOQUOTES, 'UTF-8'))
160:                 . '</label>'
161:                 . $wrapperEnd;
162:         }
163:         return $res;
164:     }
165: 
166: 
167:     /**
168:      * @return Html
169:      */
170:     public static function createSelectBox(array $items, array $optionAttrs = NULL)
171:     {
172:         list($optionAttrs, $optionTag) = self::prepareAttrs($optionAttrs, 'option');
173:         $option = Html::el();
174:         $res = $tmp = '';
175:         foreach ($items as $group => $subitems) {
176:             if (is_array($subitems)) {
177:                 $res .= Html::el('optgroup')->label($group)->startTag();
178:                 $tmp = '</optgroup>';
179:             } else {
180:                 $subitems = array($group => $subitems);
181:             }
182:             foreach ($subitems as $value => $caption) {
183:                 $option->value = $value;
184:                 foreach ($optionAttrs as $k => $v) {
185:                     $option->attrs[$k] = isset($v[$value]) ? $v[$value] : NULL;
186:                 }
187:                 if ($caption instanceof Html) {
188:                     $caption = clone $caption;
189:                     $res .= $caption->setName('option')->addAttributes($option->attrs);
190:                 } else {
191:                     $res .= $optionTag . $option->attributes() . '>'
192:                         . htmlspecialchars($caption, ENT_NOQUOTES, 'UTF-8')
193:                         . '</option>';
194:                 }
195:             }
196:             $res .= $tmp;
197:             $tmp = '';
198:         }
199:         return Html::el('select')->setHtml($res);
200:     }
201: 
202: 
203:     private static function prepareAttrs($attrs, $name)
204:     {
205:         $dynamic = array();
206:         foreach ((array) $attrs as $k => $v) {
207:             $p = str_split($k, strlen($k) - 1);
208:             if ($p[1] === '?' || $p[1] === ':') {
209:                 unset($attrs[$k], $attrs[$p[0]]);
210:                 if ($p[1] === '?') {
211:                     $dynamic[$p[0]] = array_fill_keys((array) $v, TRUE);
212:                 } elseif (is_array($v) && $v) {
213:                     $dynamic[$p[0]] = $v;
214:                 } else {
215:                     $attrs[$p[0]] = $v;
216:                 }
217:             }
218:         }
219:         return array($dynamic, '<' . $name . Html::el(NULL, $attrs)->attributes());
220:     }
221: 
222: }
223: 
Nette 2.3.1 API API documentation generated by ApiGen 2.8.0