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  1: <?php
  2: 
  3: /**
  4:  * This file is part of the Nette Framework (http://nette.org)
  5:  *
  6:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
  7:  *
  8:  * For the full copyright and license information, please view
  9:  * the file license.txt that was distributed with this source code.
 10:  */
 11: 
 12: namespace Nette\Application\UI;
 13: 
 14: use Nette;
 15: 
 16: 
 17: 
 18: /**
 19:  * Control is renderable Presenter component.
 20:  *
 21:  * @author     David Grudl
 22:  *
 23:  * @property-read Nette\Templating\ITemplate $template
 24:  * @property-read string $snippetId
 25:  */
 26: abstract class Control extends PresenterComponent implements IRenderable
 27: {
 28:     /** @var Nette\Templating\ITemplate */
 29:     private $template;
 30: 
 31:     /** @var array */
 32:     private $invalidSnippets = array();
 33: 
 34:     /** @var bool */
 35:     public $snippetMode;
 36: 
 37: 
 38: 
 39:     /********************* template factory ****************d*g**/
 40: 
 41: 
 42: 
 43:     /**
 44:      * @return Nette\Templating\ITemplate
 45:      */
 46:     final public function getTemplate()
 47:     {
 48:         if ($this->template === NULL) {
 49:             $value = $this->createTemplate();
 50:             if (!$value instanceof Nette\Templating\ITemplate && $value !== NULL) {
 51:                 $class2 = get_class($value); $class = get_class($this);
 52:                 throw new Nette\UnexpectedValueException("Object returned by $class::createTemplate() must be instance of Nette\\Templating\\ITemplate, '$class2' given.");
 53:             }
 54:             $this->template = $value;
 55:         }
 56:         return $this->template;
 57:     }
 58: 
 59: 
 60: 
 61:     /**
 62:      * @param  string|NULL
 63:      * @return Nette\Templating\ITemplate
 64:      */
 65:     protected function createTemplate($class = NULL)
 66:     {
 67:         $template = $class ? new $class : new Nette\Templating\FileTemplate;
 68:         $presenter = $this->getPresenter(FALSE);
 69:         $template->onPrepareFilters[] = $this->templatePrepareFilters;
 70:         $template->registerHelperLoader('Nette\Templating\Helpers::loader');
 71: 
 72:         // default parameters
 73:         $template->control = $template->_control = $this;
 74:         $template->presenter = $template->_presenter = $presenter;
 75:         if ($presenter instanceof Presenter) {
 76:             $template->setCacheStorage($presenter->getContext()->nette->templateCacheStorage);
 77:             $template->user = $presenter->getUser();
 78:             $template->netteHttpResponse = $presenter->getHttpResponse();
 79:             $template->netteCacheStorage = $presenter->getContext()->getByType('Nette\Caching\IStorage');
 80:             $template->baseUri = $template->baseUrl = rtrim($presenter->getHttpRequest()->getUrl()->getBaseUrl(), '/');
 81:             $template->basePath = preg_replace('#https?://[^/]+#A', '', $template->baseUrl);
 82: 
 83:             // flash message
 84:             if ($presenter->hasFlashSession()) {
 85:                 $id = $this->getParameterId('flash');
 86:                 $template->flashes = $presenter->getFlashSession()->$id;
 87:             }
 88:         }
 89:         if (!isset($template->flashes) || !is_array($template->flashes)) {
 90:             $template->flashes = array();
 91:         }
 92: 
 93:         return $template;
 94:     }
 95: 
 96: 
 97: 
 98:     /**
 99:      * Descendant can override this method to customize template compile-time filters.
100:      * @param  Nette\Templating\Template
101:      * @return void
102:      */
103:     public function templatePrepareFilters($template)
104:     {
105:         $template->registerFilter($this->getPresenter()->getContext()->nette->createLatte());
106:     }
107: 
108: 
109: 
110:     /**
111:      * Returns widget component specified by name.
112:      * @param  string
113:      * @return Nette\ComponentModel\IComponent
114:      */
115:     public function getWidget($name)
116:     {
117:         trigger_error(__METHOD__ . '() is deprecated, use getComponent() instead.', E_USER_WARNING);
118:         return $this->getComponent($name);
119:     }
120: 
121: 
122: 
123:     /**
124:      * Saves the message to template, that can be displayed after redirect.
125:      * @param  string
126:      * @param  string
127:      * @return \stdClass
128:      */
129:     public function flashMessage($message, $type = 'info')
130:     {
131:         $id = $this->getParameterId('flash');
132:         $messages = $this->getPresenter()->getFlashSession()->$id;
133:         $messages[] = $flash = (object) array(
134:             'message' => $message,
135:             'type' => $type,
136:         );
137:         $this->getTemplate()->flashes = $messages;
138:         $this->getPresenter()->getFlashSession()->$id = $messages;
139:         return $flash;
140:     }
141: 
142: 
143: 
144:     /********************* rendering ****************d*g**/
145: 
146: 
147: 
148:     /**
149:      * Forces control or its snippet to repaint.
150:      * @param  string
151:      * @return void
152:      */
153:     public function invalidateControl($snippet = NULL)
154:     {
155:         $this->invalidSnippets[$snippet] = TRUE;
156:     }
157: 
158: 
159: 
160:     /**
161:      * Allows control or its snippet to not repaint.
162:      * @param  string
163:      * @return void
164:      */
165:     public function validateControl($snippet = NULL)
166:     {
167:         if ($snippet === NULL) {
168:             $this->invalidSnippets = array();
169: 
170:         } else {
171:             unset($this->invalidSnippets[$snippet]);
172:         }
173:     }
174: 
175: 
176: 
177:     /**
178:      * Is required to repaint the control or its snippet?
179:      * @param  string  snippet name
180:      * @return bool
181:      */
182:     public function isControlInvalid($snippet = NULL)
183:     {
184:         if ($snippet === NULL) {
185:             if (count($this->invalidSnippets) > 0) {
186:                 return TRUE;
187: 
188:             } else {
189:                 $queue = array($this);
190:                 do {
191:                     foreach (array_shift($queue)->getComponents() as $component) {
192:                         if ($component instanceof IRenderable) {
193:                             if ($component->isControlInvalid()) {
194:                                 // $this->invalidSnippets['__child'] = TRUE; // as cache
195:                                 return TRUE;
196:                             }
197: 
198:                         } elseif ($component instanceof Nette\ComponentModel\IContainer) {
199:                             $queue[] = $component;
200:                         }
201:                     }
202:                 } while ($queue);
203: 
204:                 return FALSE;
205:             }
206: 
207:         } else {
208:             return isset($this->invalidSnippets[NULL]) || isset($this->invalidSnippets[$snippet]);
209:         }
210:     }
211: 
212: 
213: 
214:     /**
215:      * Returns snippet HTML ID.
216:      * @param  string  snippet name
217:      * @return string
218:      */
219:     public function getSnippetId($name = NULL)
220:     {
221:         // HTML 4 ID & NAME: [A-Za-z][A-Za-z0-9:_.-]*
222:         return 'snippet-' . $this->getUniqueId() . '-' . $name;
223:     }
224: 
225: }
226: 
Nette Framework 2.0.10 API API documentation generated by ApiGen 2.8.0