1: <?php
  2: /**
  3:  * Prototype Engine Helper for JsHelper
  4:  *
  5:  * Provides Prototype specific Javascript for JsHelper. Requires at least
  6:  * Prototype 1.6
  7:  *
  8:  * PHP 5
  9:  *
 10:  * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
 11:  * Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
 12:  *
 13:  * Licensed under The MIT License
 14:  * Redistributions of files must retain the above copyright notice.
 15:  *
 16:  * @copyright     Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
 17:  * @link          http://cakephp.org CakePHP(tm) Project
 18:  * @package       Cake.View.Helper
 19:  * @since         CakePHP(tm) v 1.3
 20:  * @license       MIT License (http://www.opensource.org/licenses/mit-license.php)
 21:  */
 22: 
 23: App::uses('JsBaseEngineHelper', 'View/Helper');
 24: 
 25: /**
 26:  * Prototype Engine Helper for JsHelper
 27:  *
 28:  * Provides Prototype specific Javascript for JsHelper. Requires at least
 29:  * Prototype 1.6
 30:  *
 31:  * @package       Cake.View.Helper
 32:  */
 33: class PrototypeEngineHelper extends JsBaseEngineHelper {
 34: /**
 35:  * Is the current selection a multiple selection? or is it just a single element.
 36:  *
 37:  * @var boolean
 38:  */
 39:     protected $_multiple = false;
 40: 
 41: /**
 42:  * Option mappings for Prototype
 43:  *
 44:  * @var array
 45:  */
 46:     protected $_optionMap = array(
 47:         'request' => array(
 48:             'async' => 'asynchronous',
 49:             'data' => 'parameters',
 50:             'before' => 'onCreate',
 51:             'success' => 'onSuccess',
 52:             'complete' => 'onComplete',
 53:             'error' => 'onFailure'
 54:         ),
 55:         'sortable' => array(
 56:             'sort' => 'onChange',
 57:             'complete' => 'onUpdate',
 58:         ),
 59:         'drag' => array(
 60:             'snapGrid' => 'snap',
 61:             'container' => 'constraint',
 62:             'stop' => 'onEnd',
 63:             'start' => 'onStart',
 64:             'drag' => 'onDrag',
 65:         ),
 66:         'drop' => array(
 67:             'hover' => 'onHover',
 68:             'drop' => 'onDrop',
 69:             'hoverClass' => 'hoverclass',
 70:         ),
 71:         'slider' => array(
 72:             'direction' => 'axis',
 73:             'change' => 'onSlide',
 74:             'complete' => 'onChange',
 75:             'value' => 'sliderValue',
 76:         )
 77:     );
 78: 
 79: /**
 80:  * Contains a list of callback names -> default arguments.
 81:  *
 82:  * @var array
 83:  */
 84:     protected $_callbackArguments = array(
 85:         'slider' => array(
 86:             'onSlide' => 'value',
 87:             'onChange' => 'value',
 88:         ),
 89:         'drag' => array(
 90:             'onStart' => 'event',
 91:             'onDrag' => 'event',
 92:             'change' => 'draggable',
 93:             'onEnd' => 'event',
 94:         ),
 95:         'drop' => array(
 96:             'onHover' => 'draggable, droppable, event',
 97:             'onDrop' => 'draggable, droppable, event',
 98:         ),
 99:         'request' => array(
100:             'onCreate' => 'transport',
101:             'onComplete' => 'transport',
102:             'onFailure' => 'response, jsonHeader',
103:             'onRequest' => 'transport',
104:             'onSuccess' => 'response, jsonHeader'
105:         ),
106:         'sortable' => array(
107:             'onStart' => 'element',
108:             'onChange' => 'element',
109:             'onUpdate' => 'element',
110:         ),
111:     );
112: 
113: /**
114:  * Create javascript selector for a CSS rule
115:  *
116:  * @param string $selector The selector that is targeted
117:  * @return PrototypeEngineHelper instance of $this. Allows chained methods.
118:  */
119:     public function get($selector) {
120:         $this->_multiple = false;
121:         if ($selector == 'window' || $selector == 'document') {
122:             $this->selection = "$(" . $selector .")";
123:             return $this;
124:         }
125:         if (preg_match('/^#[^\s.]+$/', $selector)) {
126:             $this->selection = '$("' . substr($selector, 1) . '")';
127:             return $this;
128:         }
129:         $this->_multiple = true;
130:         $this->selection = '$$("' . $selector . '")';
131:         return $this;
132:     }
133: 
134: /**
135:  * Add an event to the script cache. Operates on the currently selected elements.
136:  *
137:  * ### Options
138:  *
139:  * - `wrap` - Whether you want the callback wrapped in an anonymous function. (defaults true)
140:  * - `stop` - Whether you want the event to stopped. (defaults true)
141:  *
142:  * @param string $type Type of event to bind to the current 946 id
143:  * @param string $callback The Javascript function you wish to trigger or the function literal
144:  * @param array $options Options for the event.
145:  * @return string completed event handler
146:  */
147:     public function event($type, $callback, $options = array()) {
148:         $defaults = array('wrap' => true, 'stop' => true);
149:         $options = array_merge($defaults, $options);
150: 
151:         $function = 'function (event) {%s}';
152:         if ($options['wrap'] && $options['stop']) {
153:             $callback = "event.stop();\n" . $callback;
154:         }
155:         if ($options['wrap']) {
156:             $callback = sprintf($function, $callback);
157:         }
158:         $out = $this->selection . ".observe(\"{$type}\", $callback);";
159:         return $out;
160:     }
161: 
162: /**
163:  * Create a domReady event. This is a special event in many libraries
164:  *
165:  * @param string $functionBody The code to run on domReady
166:  * @return string completed domReady method
167:  */
168:     public function domReady($functionBody) {
169:         $this->selection = 'document';
170:         return $this->event('dom:loaded', $functionBody, array('stop' => false));
171:     }
172: 
173: /**
174:  * Create an iteration over the current selection result.
175:  *
176:  * @param string $callback The function body you wish to apply during the iteration.
177:  * @return string completed iteration
178:  */
179:     public function each($callback) {
180:         return $this->selection . '.each(function (item, index) {' . $callback . '});';
181:     }
182: 
183: /**
184:  * Trigger an Effect.
185:  *
186:  * ### Note: Effects require Scriptaculous to be loaded.
187:  *
188:  * @param string $name The name of the effect to trigger.
189:  * @param array $options Array of options for the effect.
190:  * @return string completed string with effect.
191:  * @see JsBaseEngineHelper::effect()
192:  */
193:     public function effect($name, $options = array()) {
194:         $effect = '';
195:         $optionString = null;
196:         if (isset($options['speed'])) {
197:             if ($options['speed'] == 'fast') {
198:                 $options['duration'] = 0.5;
199:             } elseif ($options['speed'] == 'slow') {
200:                 $options['duration'] = 2;
201:             } else {
202:                 $options['duration'] = 1;
203:             }
204:             unset($options['speed']);
205:         }
206:         if (!empty($options)) {
207:             $optionString = ', {' . $this->_parseOptions($options) . '}';
208:         }
209:         switch ($name) {
210:             case 'hide':
211:             case 'show':
212:                 $effect = $this->selection . '.' . $name . '();';
213:             break;
214:             case 'slideIn':
215:             case 'slideOut':
216:                 $name = ($name == 'slideIn') ? 'slideDown' : 'slideUp';
217:                 $effect = 'Effect.' . $name . '(' . $this->selection . $optionString . ');';
218:             break;
219:             case 'fadeIn':
220:             case 'fadeOut':
221:                 $name = ($name == 'fadeIn') ? 'appear' : 'fade';
222:                 $effect = $this->selection . '.' . $name .'(' . substr($optionString, 2) . ');';
223:             break;
224:         }
225:         return $effect;
226:     }
227: 
228: /**
229:  * Create an Ajax or Ajax.Updater call.
230:  *
231:  * @param mixed $url
232:  * @param array $options
233:  * @return string The completed ajax call.
234:  */
235:     public function request($url, $options = array()) {
236:         $url = '"'. $this->url($url) . '"';
237:         $options = $this->_mapOptions('request', $options);
238:         $type = '.Request';
239:         $data = null;
240:         if (isset($options['type']) && strtolower($options['type']) == 'json') {
241:             unset($options['type']);
242:         }
243:         if (isset($options['update'])) {
244:             $url = '"' . str_replace('#', '', $options['update']) . '", ' . $url;
245:             $type = '.Updater';
246:             unset($options['update'], $options['type']);
247:         }
248:         $safe = array_keys($this->_callbackArguments['request']);
249:         $options = $this->_prepareCallbacks('request', $options, $safe);
250:         if (!empty($options['dataExpression'])) {
251:             $safe[] = 'parameters';
252:             unset($options['dataExpression']);
253:         }
254:         $options = $this->_parseOptions($options, $safe);
255:         if (!empty($options)) {
256:             $options = ', {' . $options . '}';
257:         }
258:         return "var jsRequest = new Ajax$type($url$options);";
259:     }
260: 
261: /**
262:  * Create a sortable element.
263:  *
264:  * #### Note: Requires scriptaculous to be loaded.
265:  *
266:  * The scriptaculous implementation of sortables does not support the 'start'
267:  * and 'distance' options.
268:  *
269:  * @param array $options Array of options for the sortable.
270:  * @return string Completed sortable script.
271:  * @see JsBaseEngineHelper::sortable() for options list.
272:  */
273:     public function sortable($options = array()) {
274:         $options = $this->_processOptions('sortable', $options);
275:         if (!empty($options)) {
276:             $options = ', {' . $options . '}';
277:         }
278:         return 'var jsSortable = Sortable.create(' . $this->selection . $options . ');';
279:     }
280: 
281: /**
282:  * Create a Draggable element.
283:  *
284:  * #### Note: Requires scriptaculous to be loaded.
285:  *
286:  * @param array $options Array of options for the draggable.
287:  * @return string Completed draggable script.
288:  * @see JsBaseEngineHelper::draggable() for options list.
289:  */
290:     public function drag($options = array()) {
291:         $options = $this->_processOptions('drag', $options);
292:         if (!empty($options)) {
293:             $options = ', {' . $options . '}';
294:         }
295:         if ($this->_multiple) {
296:             return $this->each('new Draggable(item' . $options . ');');
297:         }
298:         return 'var jsDrag = new Draggable(' . $this->selection . $options . ');';
299:     }
300: 
301: /**
302:  * Create a Droppable element.
303:  *
304:  * #### Note: Requires scriptaculous to be loaded.
305:  *
306:  * @param array $options Array of options for the droppable.
307:  * @return string Completed droppable script.
308:  * @see JsBaseEngineHelper::droppable() for options list.
309:  */
310:     public function drop($options = array()) {
311:         $options = $this->_processOptions('drop', $options);
312:         if (!empty($options)) {
313:             $options = ', {' . $options . '}';
314:         }
315:         return 'Droppables.add(' . $this->selection . $options . ');';
316:     }
317: 
318: /**
319:  * Creates a slider control widget.
320:  *
321:  * ### Note: Requires scriptaculous to be loaded.
322:  *
323:  * @param array $options Array of options for the slider.
324:  * @return string Completed slider script.
325:  * @see JsBaseEngineHelper::slider() for options list.
326:  */
327:     public function slider($options = array()) {
328:         $slider = $this->selection;
329:         $this->get($options['handle']);
330:         unset($options['handle']);
331: 
332:         if (isset($options['min']) && isset($options['max'])) {
333:             $options['range'] = sprintf('$R(%s,%s)', $options['min'], $options['max']);
334:             unset($options['min'], $options['max']);
335:         }
336:         $options = $this->_mapOptions('slider', $options);
337:         $options = $this->_prepareCallbacks('slider', $options);
338:         $optionString = $this->_parseOptions(
339:             $options, array_merge(array_keys($this->_callbackArguments['slider']), array('range'))
340:         );
341:         if (!empty($optionString)) {
342:             $optionString = ', {' . $optionString . '}';
343:         }
344:         $out = 'var jsSlider = new Control.Slider(' . $this->selection . ', ' . $slider . $optionString . ');';
345:         $this->selection = $slider;
346:         return $out;
347:     }
348: 
349: /**
350:  * Serialize the form attached to $selector.
351:  *
352:  * @param array $options Array of options.
353:  * @return string Completed serializeForm() snippet
354:  * @see JsBaseEngineHelper::serializeForm()
355:  */
356:     public function serializeForm($options = array()) {
357:         $options = array_merge(array('isForm' => false, 'inline' => false), $options);
358:         $selection = $this->selection;
359:         if (!$options['isForm']) {
360:             $selection = '$(' . $this->selection . '.form)';
361:         }
362:         $method = '.serialize()';
363:         if (!$options['inline']) {
364:             $method .= ';';
365:         }
366:         return $selection . $method;
367:     }
368: }
369: