application/hub/main/template/objects/class_ObjectRegistryTemplateEngine.php

   1 <?php
   2 /**
   3  * An ObjectRegistry template engine class
   4  *
   5  * @author              Roland Haeder <webmaster@ship-simu.org>
   6  * @version             0.0.0
   7  * @copyright   Copyright (c) 2007, 2008 Roland Haeder, 2009, 2010 Core Developer Team
   8  * @license             GNU GPL 3.0 or any newer version
   9  * @link                http://www.ship-simu.org
  10  * @todo                This template engine does not make use of setTemplateType()
  11  *
  12  * This program is free software: you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation, either version 3 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  24  */
  25 class ObjectRegistryTemplateEngine extends BaseTemplateEngine implements CompileableTemplate {
  26         /**
  27          * Instance for the object registry
  28          */
  29         private $objectRegistryInstance = null;
  30
  31         /**
  32          * Main nodes in the XML tree ('menu' is ignored)
  33          */
  34         private $mainNodes = array(
  35                 'object-registry'
  36         );
  37
  38         /**
  39          * Sub nodes in the XML tree
  40          */
  41         private $subNodes = array(
  42                 'object-list',
  43                 'object-list-entry',
  44                 'object-name',
  45                 'object-recipient-limitation',
  46                 'object-max-spread',
  47                 'object-protocol',
  48                 'object-recipient-type'
  49         );
  50
  51         /**
  52          * Current main node
  53          */
  54         private $curr = array();
  55
  56         /**
  57          * Content from dependency
  58          */
  59         private $dependencyContent = array();
  60
  61         /**
  62          * Protected constructor
  63          *
  64          * @return      void
  65          */
  66         protected function __construct () {
  67                 // Call parent constructor
  68                 parent::__construct(__CLASS__);
  69
  70                 // Init object type registry instance
  71                 $this->objectRegistryInstance = ObjectFactory::createObjectByConfiguredName('object_type_registry_class');
  72         }
  73
  74         /**
  75          * Creates an instance of the class TemplateEngine and prepares it for usage
  76          *
  77          * @param       $appInstance    A manageable application
  78          * @return      $templateInstance       An instance of TemplateEngine
  79          * @throws      BasePathIsEmptyException                If the provided $templateBasePath is empty
  80          * @throws      InvalidBasePathStringException  If $templateBasePath is no string
  81          * @throws      BasePathIsNoDirectoryException  If $templateBasePath is no
  82          *                                                                                      directory or not found
  83          * @throws      BasePathReadProtectedException  If $templateBasePath is
  84          *                                                                                      read-protected
  85          */
  86         public static final function createObjectRegistryTemplateEngine (ManageableApplication $appInstance) {
  87                 // Get a new instance
  88                 $templateInstance = new ObjectRegistryTemplateEngine();
  89
  90                 // Get language and file I/O instances from application
  91                 $langInstance = $appInstance->getLanguageInstance();
  92                 $ioInstance = $appInstance->getFileIoInstance();
  93
  94                 // Determine base path
  95                 $templateBasePath = $templateInstance->getConfigInstance()->getConfigEntry('application_base_path') . $appInstance->getRequestInstance()->getRequestElement('app') . '/';
  96
  97                 // Is the base path valid?
  98                 if (empty($templateBasePath)) {
  99                         // Base path is empty
 100                         throw new BasePathIsEmptyException($templateInstance, self::EXCEPTION_UNEXPECTED_EMPTY_STRING);
 101                 } elseif (!is_string($templateBasePath)) {
 102                         // Is not a string
 103                         throw new InvalidBasePathStringException(array($templateInstance, $templateBasePath), self::EXCEPTION_INVALID_STRING);
 104                 } elseif (!is_dir($templateBasePath)) {
 105                         // Is not a path
 106                         throw new BasePathIsNoDirectoryException(array($templateInstance, $templateBasePath), self::EXCEPTION_INVALID_PATH_NAME);
 107                 } elseif (!is_readable($templateBasePath)) {
 108                         // Is not readable
 109                         throw new BasePathReadProtectedException(array($templateInstance, $templateBasePath), self::EXCEPTION_READ_PROTECED_PATH);
 110                 }
 111
 112                 // Set the base path
 113                 $templateInstance->setTemplateBasePath($templateBasePath);
 114
 115                 // Set the language and IO instances
 116                 $templateInstance->setLanguageInstance($langInstance);
 117                 $templateInstance->setFileIoInstance($ioInstance);
 118
 119                 // Set template extensions
 120                 $templateInstance->setRawTemplateExtension($templateInstance->getConfigInstance()->getConfigEntry('raw_template_extension'));
 121                 $templateInstance->setCodeTemplateExtension($templateInstance->getConfigInstance()->getConfigEntry('object_registry_template_extension'));
 122
 123                 // Absolute output path for compiled templates
 124                 $templateInstance->setCompileOutputPath($templateInstance->getConfigInstance()->getConfigEntry('base_path') . $templateInstance->getConfigInstance()->getConfigEntry('compile_output_path'));
 125
 126                 // Init a variable stacker
 127                 $stackerInstance = ObjectFactory::createObjectByConfiguredName('object_registry_stacker_class');
 128
 129                 // Set it
 130                 $templateInstance->setStackerInstance($stackerInstance);
 131
 132                 // Return the prepared instance
 133                 return $templateInstance;
 134         }
 135
 136         /**
 137          * Load a specified object_registry template into the engine
 138          *
 139          * @param       $template       The object_registry template we shall load which is
 140          *                                              located in 'object_registry' by default
 141          * @return      void
 142          */
 143         public function loadObjectRegistryTemplate ($template) {
 144                 // Set template type
 145                 $this->setTemplateType($this->getConfigInstance()->getConfigEntry('object_registry_template_type'));
 146
 147                 // Load the special template
 148                 $this->loadTemplate($template);
 149         }
 150
 151         /**
 152          * Getter for current main node
 153          *
 154          * @return      $currMainNode   Current main node
 155          */
 156         public final function getCurrMainNode () {
 157                 return $this->curr['main_node'];
 158         }
 159
 160         /**
 161          * Setter for current main node
 162          *
 163          * @param       $element                Element name to set as current main node
 164          * @return      $currMainNode   Current main node
 165          */
 166         private final function setCurrMainNode ($element) {
 167                 $this->curr['main_node'] = (string) $element;
 168         }
 169
 170         /**
 171          * Getter for main node array
 172          *
 173          * @return      $mainNodes      Array with valid main node names
 174          */
 175         public final function getMainNodes () {
 176                 return $this->mainNodes;
 177         }
 178
 179         /**
 180          * Getter for sub node array
 181          *
 182          * @return      $subNodes       Array with valid sub node names
 183          */
 184         public final function getSubNodes () {
 185                 return $this->subNodes;
 186         }
 187
 188         /**
 189          * Handles the start element of an XML resource
 190          *
 191          * @param       $resource               XML parser resource (currently ignored)
 192          * @param       $element                The element we shall handle
 193          * @param       $attributes             All attributes
 194          * @return      void
 195          * @throws      InvalidXmlNodeException         If an unknown/invalid XML node name was found
 196          */
 197         public function startElement ($resource, $element, array $attributes) {
 198                 // Initial method name which will never be called...
 199                 $methodName = 'initObjectRegistry';
 200
 201                 // Make the element name lower-case
 202                 $element = strtolower($element);
 203
 204                 // Is the element a main node?
 205                 //* DEBUG: */ echo "START: &gt;".$element."&lt;<br />\n";
 206                 if (in_array($element, $this->getMainNodes())) {
 207                         // Okay, main node found!
 208                         $methodName = 'start' . $this->convertToClassName($element);
 209
 210                         // Set it
 211                         $this->setCurrMainNode($element);
 212                 } elseif (in_array($element, $this->getSubNodes())) {
 213                         // Sub node found
 214                         $methodName = 'start' . $this->convertToClassName($element);
 215                 } else {
 216                         // Invalid node name found
 217                         throw new InvalidXmlNodeException(array($this, $element, $attributes), XmlParser::EXCEPTION_XML_NODE_UNKNOWN);
 218                 }
 219
 220                 // Call method
 221                 call_user_func_array(array($this, $methodName), $attributes);
 222         }
 223
 224         /**
 225          * Ends the main or sub node by sending out the gathered data
 226          *
 227          * @param       $resource       An XML resource pointer (currently ignored)
 228          * @param       $nodeName       Name of the node we want to finish
 229          * @return      void
 230          * @throws      XmlNodeMismatchException        If current main node mismatches the closing one
 231          */
 232         public function endElement ($resource, $nodeName) {
 233                 // Make all lower-case
 234                 $nodeName = strtolower($nodeName);
 235
 236                 // Does this match with current main node?
 237                 //* DEBUG: */ echo "END: &gt;".$nodeName."&lt;<br />\n";
 238                 if (($nodeName != $this->getCurrMainNode()) && (in_array($nodeName, $this->getMainNodes()))) {
 239                         // Did not match!
 240                         throw new XmlNodeMismatchException (array($this, $nodeName, $this->getCurrMainNode()), XmlParser::EXCEPTION_XML_NODE_MISMATCH);
 241                 } // END - if
 242
 243                 // Construct method name
 244                 $methodName = 'finish' . $this->convertToClassName($nodeName);
 245
 246                 // Call the corresponding method
 247                 //* DEBUG: */ echo "call: ".$methodName."<br />\n";
 248                 call_user_func_array(array($this, $methodName), array());
 249         }
 250
 251         /**
 252          * Currently not used
 253          *
 254          * @param       $resource               XML parser resource (currently ignored)
 255          * @param       $characters             Characters to handle
 256          * @return      void
 257          * @todo        Find something useful with this!
 258          */
 259         public function characterHandler ($resource, $characters) {
 260                 // Trim all spaces away
 261                 $characters = trim($characters);
 262
 263                 // Is this string empty?
 264                 if (empty($characters)) {
 265                         // Then skip it silently
 266                         return false;
 267                 } // END - if
 268
 269                 // Get current XML node name as an array index
 270                 $nodeName = $this->getStackerInstance()->getNamed('object_registry');
 271
 272                 // Is the node name 'object-name'?
 273                 if ($nodeName == 'object-name') {
 274                         // Output debug message
 275                         $this->debugOutput('TAGS: Adding object type ' . $characters . ' to registry.');
 276                 } // END - if
 277
 278                 // Add it to the registry
 279                 $this->objectRegistryInstance->addEntry($nodeName, $characters);
 280         }
 281
 282         /**
 283          * Handles the template dependency for given node
 284          *
 285          * @param       $node                                   The node we should load a dependency template
 286          * @param       $templateDependency             A template to load to satisfy dependencies
 287          * @return      void
 288          */
 289         private function handleTemplateDependency ($node, $templateDependency) {
 290                 // Is the template dependency set?
 291                 if ((!empty($templateDependency)) && (!isset($this->dependencyContent[$node]))) {
 292                         // Get a temporay menu template instance
 293                         $templateInstance = ObjectFactory::createObjectByConfiguredName('object_registry_template_class', array($this->getApplicationInstance()));
 294
 295                         // Then load it
 296                         $templateInstance->loadObjectRegistryTemplate($templateDependency);
 297
 298                         // Get an XmlParser instance
 299                         $templateInstance->renderXmlContent();
 300
 301                         // Parse the template's content contents
 302                         $this->dependencyContent[$node] = $templateInstance->getRawTemplateData();
 303                 } // END - if
 304         }
 305
 306         /**
 307          * Getter for cache file (FQFN)
 308          *
 309          * @return      $fqfn   Full-qualified file name of the menu cache
 310          */
 311         public function getObjectRegistryCacheFqfn () {
 312                 $this->partialStub('Please implement this method.');
 313         }
 314
 315         /**
 316          * Starts the object-registry
 317          *
 318          * @return      void
 319          */
 320         private function startObjectRegistry () {
 321                 // Push the node name on the stacker
 322                 $this->getStackerInstance()->pushNamed('object_registry', 'object-registry');
 323         }
 324
 325         /**
 326          * Starts the object-list
 327          *
 328          * @return      void
 329          */
 330         private function startObjectList () {
 331                 // Push the node name on the stacker
 332                 $this->getStackerInstance()->pushNamed('object_registry', 'object-list');
 333         }
 334
 335         /**
 336          * Starts the object-list-entry
 337          *
 338          * @return      void
 339          */
 340         private function startObjectListEntry () {
 341                 // Push the node name on the stacker
 342                 $this->getStackerInstance()->pushNamed('object_registry', 'object-list');
 343         }
 344
 345         /**
 346          * Starts the object-name
 347          *
 348          * @return      void
 349          */
 350         private function startObjectName () {
 351                 // Push the node name on the stacker
 352                 $this->getStackerInstance()->pushNamed('object_registry', 'object-name');
 353         }
 354
 355         /**
 356          * Starts the object-recipient-limitation
 357          *
 358          * @return      void
 359          */
 360         private function startObjectRecipientLimitation () {
 361                 // Push the node name on the stacker
 362                 $this->getStackerInstance()->pushNamed('object_registry', 'object-recipient-limitation');
 363         }
 364
 365         /**
 366          * Starts the object-max-spread
 367          *
 368          * @return      void
 369          */
 370         private function startObjectMaxSpread () {
 371                 // Push the node name on the stacker
 372                 $this->getStackerInstance()->pushNamed('object_registry', 'object-max-spread');
 373         }
 374
 375         /**
 376          * Starts the object-protocol
 377          *
 378          * @return      void
 379          */
 380         private function startObjectProtocol () {
 381                 // Push the node name on the stacker
 382                 $this->getStackerInstance()->pushNamed('object_registry', 'object-protocol');
 383         }
 384
 385         /**
 386          * Starts the object-recipient-type
 387          *
 388          * @return      void
 389          */
 390         private function startObjectRecipientType () {
 391                 // Push the node name on the stacker
 392                 $this->getStackerInstance()->pushNamed('object_registry', 'object-recipient-type');
 393         }
 394
 395         /**
 396          * Finishes the object-recipient-type
 397          *
 398          * @return      void
 399          */
 400         private function finishObjectRecipientType () {
 401                 // Pop the last entry
 402                 $this->getStackerInstance()->popNamed('object_registry');
 403         }
 404
 405         /**
 406          * Finishes the object-protocol
 407          *
 408          * @return      void
 409          */
 410         private function finishObjectProtocol () {
 411                 // Pop the last entry
 412                 $this->getStackerInstance()->popNamed('object_registry');
 413         }
 414
 415         /**
 416          * Finishes the object-max-spread
 417          *
 418          * @return      void
 419          */
 420         private function finishObjectMaxSpread () {
 421                 // Pop the last entry
 422                 $this->getStackerInstance()->popNamed('object_registry');
 423         }
 424
 425         /**
 426          * Finishes the object-recipient-limitation
 427          *
 428          * @return      void
 429          */
 430         private function finishObjectRecipientLimitation () {
 431                 // Pop the last entry
 432                 $this->getStackerInstance()->popNamed('object_registry');
 433         }
 434
 435         /**
 436          * Finishes the object-name
 437          *
 438          * @return      void
 439          */
 440         private function finishObjectName () {
 441                 // Pop the last entry
 442                 $this->getStackerInstance()->popNamed('object_registry');
 443         }
 444
 445         /**
 446          * Finishes the object-list-entry
 447          *
 448          * @return      void
 449          */
 450         private function finishObjectListEntry () {
 451                 // Pop the last entry
 452                 $this->getStackerInstance()->popNamed('object_registry');
 453         }
 454
 455         /**
 456          * Finishes the object-list
 457          *
 458          * @return      void
 459          */
 460         private function finishObjectList () {
 461                 // Pop the last entry
 462                 $this->getStackerInstance()->popNamed('object_registry');
 463         }
 464
 465         /**
 466          * Finishes the object-registry
 467          *
 468          * @return      void
 469          */
 470         private function finishObjectRegistry () {
 471                 // Pop the last entry
 472                 $this->getStackerInstance()->popNamed('object_registry');
 473         }
 474 }
 475
 476 // [EOF]
 477 ?>