inc/classes/main/helper/web/class_WebFormHelper.php

   1 <?php
   2 /**
   3  * A helper for constructing web forms
   4  *
   5  * @author              Roland Haeder <webmaster@ship-simu.org>
   6  * @version             0.0.0
   7  * @copyright   Copyright(c) 2007, 2008 Roland Haeder, this is free software
   8  * @license             GNU GPL 3.0 or any newer version
   9  * @link                http://www.ship-simu.org
  10  *
  11  * This program is free software: you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation, either version 3 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  23  */
  24 class WebFormHelper extends BaseHelper {
  25         /**
  26          * Wether the form tag is opened (keep at false or else your forms will
  27          * never work!)
  28          */
  29         private $formOpened = false;
  30
  31         /**
  32          * Name of the form
  33          */
  34         private $formName = "";
  35
  36         /**
  37          * Wether the group is opened or not
  38          */
  39         private $groupOpened = false;
  40
  41         /**
  42          * Wether the sub group is opened or not
  43          */
  44         private $subGroupOpened = false;
  45
  46         /**
  47          * Name of the sub group
  48          */
  49         private $subGroupName = "";
  50
  51         // Class Constants
  52         const EXCEPTION_FORM_NAME_INVALID       = 0x030;
  53         const EXCEPTION_CLOSED_FORM             = 0x031;
  54         const EXCEPTION_OPENED_FORM             = 0x032;
  55         const EXCEPTION_UNEXPECTED_CLOSED_GROUP = 0x033;
  56
  57         /**
  58          * Protected constructor
  59          *
  60          * @return      void
  61          */
  62         protected function __construct () {
  63                 // Call parent constructor
  64                 parent::__construct(__CLASS__);
  65         }
  66
  67         /**
  68          * Creates the helper class with the given template engine instance and form name
  69          *
  70          * @param       $templateInstance       An instance of a valid template engine
  71          * @param       $formName                       Name of the form
  72          * @param       $formId                         Value for "id" attribute (default: $formName)
  73          * @return      $helperInstance         A preparedf instance of this class
  74          */
  75         public final static function createWebFormHelper (CompileableTemplate $templateInstance, $formName, $formId = false) {
  76                 // Get new instance
  77                 $helperInstance = new WebFormHelper();
  78
  79                 // Set template instance
  80                 $helperInstance->setTemplateInstance($templateInstance);
  81
  82                 // Is the form id not set?
  83                 if ($formId === false) {
  84                         // Use form id from form name
  85                         $formId = $formName;
  86                 }
  87
  88                 // Create the form
  89                 $helperInstance->addFormTag($formName, $formId);
  90
  91                 // Return the prepared instance
  92                 return $helperInstance;
  93         }
  94
  95         /**
  96          * Add the form tag or close it an already opened form tag
  97          *
  98          * @param       $formName       Name of the form (default: false)
  99          * @param       $formId         Id of the form (attribute "id"; default: false)
 100          * @return      void
 101          * @throws      InvalidFormNameException        If the form name is invalid (=false)
 102          */
 103         public function addFormTag ($formName = false, $formId = false) {
 104                 // When the form is not yet opened at least form name must be valid
 105                 if (($this->formOpened === false) && ($formName === false)) {
 106                         // Thrown an exception
 107                         throw new InvalidFormNameException ($this, self::EXCEPTION_FORM_NAME_INVALID);
 108                 }
 109
 110                 // Close the form is default
 111                 $formContent = "</form>";
 112
 113                 // Check wether we shall open or close the form
 114                 if ($this->formOpened === false) {
 115                         // Add HTML code
 116                         $formContent = sprintf("<form name=\"%s\" class=\"forms\" action=\"%s/%s\" method=\"%s\" target=\"%s\"",
 117                                 $formName,
 118                                 $this->getConfigInstance()->readConfig('base_url'),
 119                                 $this->getConfigInstance()->readConfig('form_action'),
 120                                 $this->getConfigInstance()->readConfig('form_method'),
 121                                 $this->getConfigInstance()->readConfig('form_target')
 122                         );
 123
 124                         // Is the form id set?
 125                         if ($formId !== false) {
 126                                 // Then add it as well
 127                                 $formContent .= sprintf(" id=\"%s_form\"",
 128                                         $formId
 129                                 );
 130                         }
 131
 132                         // Add close bracket
 133                         $formContent .= ">";
 134
 135                         // Open the form and remeber the form name
 136                         $this->formOpened = true;
 137                         $this->formName = $formName;
 138                 } else {
 139                         // Add the hidden field required to identify safely this form
 140                         $this->addInputHiddenField('form', $this->formName);
 141
 142                         // Is a group open?
 143                         if ($this->groupOpened === true) {
 144                                 // Then automatically close it here
 145                                 $this->addFormGroup("", "");
 146                         }
 147
 148                         // @TODO Add some unique PIN here to bypass problems with some browser and/or extensions
 149                         // Simply close it
 150                         $this->formOpened = false;
 151                 }
 152
 153                 // Add it to the content
 154                 $this->addContent($formContent);
 155         }
 156
 157         /**
 158          * Add a text input tag to the form or throw an exception if it is not yet
 159          * opened. The field's name will be set as id.
 160          *
 161          * @param       $fieldName                      Input field name
 162          * @param       $fieldValue                     Input default value (default: empty)
 163          * @return      void
 164          * @throws      FormClosedException             If the form is not yet opened
 165          */
 166         public function addInputTextField ($fieldName, $fieldValue = "") {
 167                 // Is the form opened?
 168                 if ($this->formOpened === false) {
 169                         // Throw an exception
 170                         throw new FormClosedException (array($this, $fieldName), self::EXCEPTION_CLOSED_FORM);
 171                 }
 172
 173                 // Generate the content
 174                 $inputContent = sprintf("<input type=\"text\" class=\"textfield\" id=\"%s\" name=\"%s\" value=\"%s\" />",
 175                         $fieldName,
 176                         $fieldName,
 177                         $fieldValue
 178                 );
 179
 180                 // And add it maybe with a "li" tag
 181                 $this->addContent($inputContent);
 182         }
 183
 184         /**
 185          * Add a password input tag to the form or throw an exception if it is not
 186          * yet opened. The field's name will be set as id.
 187          *
 188          * @param       $fieldName                      Input field name
 189          * @param       $fieldValue                     Input default value (default: empty)
 190          * @return      void
 191          * @throws      FormClosedException             If the form is not yet opened
 192          */
 193         public function addInputPasswordField ($fieldName, $fieldValue = "") {
 194                 // Is the form opened?
 195                 if ($this->formOpened === false) {
 196                         // Throw an exception
 197                         throw new FormClosedException (array($this, $fieldName), self::EXCEPTION_CLOSED_FORM);
 198                 }
 199
 200                 // Generate the content
 201                 $inputContent = sprintf("<input type=\"password\" class=\"password\" id=\"%s\" name=\"%s\" value=\"%s\" />",
 202                         $fieldName,
 203                         $fieldName,
 204                         $fieldValue
 205                 );
 206
 207                 // And add it
 208                 $this->addContent($inputContent);
 209         }
 210
 211         /**
 212          * Add a hidden input tag to the form or throw an exception if it is not
 213          * yet opened. The field's name will be set as id.
 214          *
 215          * @param       $fieldName                      Input field name
 216          * @param       $fieldValue                     Input default value (default: empty)
 217          * @return      void
 218          * @throws      FormClosedException             If the form is not yet opened
 219          */
 220         public function addInputHiddenField ($fieldName, $fieldValue = "") {
 221                 // Is the form opened?
 222                 if ($this->formOpened === false) {
 223                         // Throw an exception
 224                         throw new FormClosedException (array($this, $fieldName), self::EXCEPTION_CLOSED_FORM);
 225                 }
 226
 227                 // Generate the content
 228                 $inputContent = sprintf("<input type=\"hidden\" name=\"%s\" value=\"%s\" />",
 229                         $fieldName,
 230                         $fieldValue
 231                 );
 232
 233                 // And add it
 234                 $this->addContent($inputContent);
 235         }
 236
 237         /**
 238          * Add a checkbox input tag to the form or throw an exception if it is not
 239          * yet opened. The field's name will be set as id.
 240          *
 241          * @param       $fieldName                      Input field name
 242          * @param       $fieldChecked           Wether the field is checked (defaut: checked)
 243          * @return      void
 244          * @throws      FormClosedException             If the form is not yet opened
 245          */
 246         public function addInputCheckboxField ($fieldName, $fieldChecked = true) {
 247                 // Is the form opened?
 248                 if ($this->formOpened === false) {
 249                         // Throw an exception
 250                         throw new FormClosedException (array($this, $fieldName), self::EXCEPTION_CLOSED_FORM);
 251                 }
 252
 253                 // Set wether the check box is checked...
 254                 $checked = " checked=\"checked\"";
 255                 if ($fieldChecked === false) $checked = " ";
 256
 257                 // Generate the content
 258                 $inputContent = sprintf("<input type=\"checkbox\" name=\"%s\" class=\"checkbox\" id=\"%s\" value=\"1\"%s/>",
 259                         $fieldName,
 260                         $fieldName,
 261                         $checked
 262                 );
 263
 264                 // And add it
 265                 $this->addContent($inputContent);
 266         }
 267
 268         /**
 269          * Add a reset input tag to the form or throw an exception if it is not
 270          * yet opened. The field's name will be set as id.
 271          *
 272          * @param       $buttonText             Text displayed on the button
 273          * @return      void
 274          * @throws      FormClosedException             If the form is not yet opened
 275          */
 276         public function addInputResetButton ($buttonText) {
 277                 // Is the form opened?
 278                 if ($this->formOpened === false) {
 279                         // Throw an exception
 280                         throw new FormClosedException (array($this, "reset"), self::EXCEPTION_CLOSED_FORM);
 281                 }
 282
 283                 // Generate the content
 284                 $inputContent = sprintf("<input type=\"reset\" class=\"reset_button\" id=\"%s_reset\" value=\"%s\" />",
 285                         $this->formName,
 286                         $buttonText
 287                 );
 288
 289                 // And add it
 290                 $this->addContent($inputContent);
 291         }
 292
 293         /**
 294          * Add a reset input tag to the form or throw an exception if it is not
 295          * yet opened. The field's name will be set as id.
 296          *
 297          * @param       $buttonText                     Text displayed on the button
 298          * @return      void
 299          * @throws      FormClosedException             If the form is not yet opened
 300          */
 301         public function addInputSubmitButton ($buttonText) {
 302                 // Is the form opened?
 303                 if ($this->formOpened === false) {
 304                         // Throw an exception
 305                         throw new FormClosedException (array($this, "submit"), self::EXCEPTION_CLOSED_FORM);
 306                 }
 307
 308                 // Generate the content
 309                 $inputContent = sprintf("<input type=\"submit\" class=\"submit_button\" id=\"%s_submit\" name=\"%s_button\" value=\"%s\" />",
 310                         $this->formName,
 311                         $this->formName,
 312                         $buttonText
 313                 );
 314
 315                 // And add it
 316                 $this->addContent($inputContent);
 317         }
 318
 319         /**
 320          * Add a form group or close an already opened and open a new one
 321          *
 322          * @param       $groupName      Name of the group
 323          * @param       $groupText      Text including HTML to show above this group
 324          * @return      void
 325          * @throws      FormClosedException             If no form has been opened before
 326          * @throws      EmptyVariableException  If $groupName is not set
 327          */
 328         public function addFormGroup ($groupName, $groupText) {
 329                 // Is a form opened?
 330                 if ($this->formOpened === false) {
 331                         // Throw exception here
 332                         throw new FormClosedException(array($this, $groupName), self::EXCEPTION_CLOSED_FORM);
 333                 }
 334
 335                 // At least the group name should be set
 336                 if ((empty($groupName)) && ($this->groupOpened === false)) {
 337                         // Throw exception here
 338                         throw new EmptyVariableException(array($this, 'groupName'), self::EXCEPTION_UNEXPECTED_EMPTY_STRING);
 339                 }
 340
 341                 // Initialize content with closing div by default
 342                 $content = "    </div>\n</div><!-- Group - CLOSE //-->";
 343
 344                 // Is this group opened?
 345                 if ($this->groupOpened === false) {
 346                         // Begin the div/span blocks
 347                         $content = sprintf("<!-- Group %s - OPEN //-->
 348 <div class=\"group_box\" id=\"%s_group_box\">
 349         <span class=\"group_text\" id=\"%s_group_text\">
 350                 %s
 351         </span>
 352         <div class=\"group_field\" id=\"%s_group_field\">",
 353                                 $groupName,
 354                                 $groupName,
 355                                 $groupName,
 356                                 $groupText,
 357                                 $groupName
 358                         );
 359
 360                         // Add the content
 361                         $this->addContent($content);
 362
 363                         // Switch the state
 364                         $this->groupOpened = true;
 365                 } else {
 366                         // Is a sub group opened?
 367                         if ($this->subGroupOpened === true) {
 368                                 // Close it here
 369                                 $this->addFormSubGroup("", "");
 370                         }
 371
 372                         // Add the content
 373                         $this->addContent($content);
 374
 375                         // Switch the state
 376                         $this->groupOpened = false;
 377
 378                         // All call it again if the group name is not empty
 379                         if (!empty($groupName)) {
 380                                 $this->addFormGroup($groupName, $groupText);
 381                         }
 382                 }
 383         }
 384
 385         /**
 386          * Add a form sub group or close an already opened and open a new one or
 387          * throws an exception if no group has been opened before or if the sub
 388          * group name is empty.
 389          *
 390          * @param       $subGroupName   Name of the group
 391          * @param       $subGroupText   Text including HTML to show above this group
 392          * @return      void
 393          * @throws      FormGroupClosedException        If no group has been opened before
 394          * @throws      EmptyVariableException          If $subGroupName is not set
 395          */
 396         public function addFormSubGroup ($subGroupName, $subGroupText) {
 397                 // Is a group opened?
 398                 if ($this->groupOpened === false) {
 399                         // Throw exception here
 400                         throw new FormGroupClosedException(array($this, $subGroupName), self::EXCEPTION_UNEXPECTED_CLOSED_GROUP);
 401                 }
 402
 403                 // At least the sub group name should be set
 404                 if ((empty($subGroupName)) && ($this->subGroupOpened === false)) {
 405                         // Throw exception here
 406                         throw new EmptyVariableException(array($this, 'groupName'), self::EXCEPTION_UNEXPECTED_EMPTY_STRING);
 407                 }
 408
 409                 // Initialize content with closing div by default
 410                 $content = "    </div>\n</div><!-- Sub group- CLOSE //-->";
 411
 412                 // Is this group opened?
 413                 if ($this->subGroupOpened === false) {
 414                         // Begin the span block
 415                         $content = sprintf("<!-- Sub group %s - OPEN //-->
 416 <div class=\"subgroup_box\" id=\"%s_subgroup_box\">
 417         <span class=\"subgroup_text\" id=\"%s_subgroup_text\">
 418                 %s
 419         </span>
 420         <div class=\"subgroup_field\" id=\"%s_subgroup_field\">",
 421                                 $subGroupName,
 422                                 $subGroupName,
 423                                 $subGroupName,
 424                                 $subGroupText,
 425                                 $subGroupName
 426                         );
 427
 428                         // Add the content
 429                         $this->addContent($content);
 430
 431                         // Switch the state and remeber the name
 432                         $this->subGroupOpened = true;
 433                         $this->subGroupName = $subGroupName;
 434                 } else {
 435                         // Add the content
 436                         $this->addContent($content);
 437
 438                         // Switch the state
 439                         $this->subGroupOpened = false;
 440
 441                         // All call it again if sub group name is not empty
 442                         if (!empty($subGroupName)) {
 443                                 $this->addFormSubGroup($subGroupName, $subGroupText);
 444                         }
 445                 }
 446         }
 447
 448         /**
 449          * Add text surrounded by a span block when there is a group opened before
 450          * or else by a div block.
 451          *
 452          * @param       $fieldName                      Field name
 453          * @param       $fieldText                      Text for the field
 454          * @return      void
 455          * @throws      FormClosedException             If the form is not yet opened
 456          */
 457         public function addFieldText ($fieldName, $fieldText) {
 458                 // Is the form opened?
 459                 if ($this->formOpened === false) {
 460                         // Throw an exception
 461                         throw new FormClosedException (array($this, $fieldName), self::EXCEPTION_CLOSED_FORM);
 462                 }
 463
 464                 // Set the block type
 465                 $block = "div";
 466                 if ($this->groupOpened === true) $block = "span";
 467
 468                 // Generate the content
 469                 $inputContent = sprintf("       <%s id=\"%s_text\">
 470                 %s
 471         </%s>",
 472                         $block,
 473                         $fieldName,
 474                         $fieldText,
 475                         $block
 476                 );
 477
 478                 // And add it
 479                 $this->addContent($inputContent);
 480         }
 481
 482         /**
 483          * Add text (notes) surrounded by a div block. Still opened groups or sub
 484          * groups will be automatically closed.
 485          *
 486          * @param       $formNotes      The form notes we shell addd
 487          * @return      void
 488          * @throws      FormClosedException             If the form is not yet opened
 489          */
 490         public function addFormNote ($formNotes) {
 491                 // Is the form opened?
 492                 if ($this->formOpened === false) {
 493                         // Throw an exception
 494                         throw new FormClosedException (array($this, "form_notes"), self::EXCEPTION_CLOSED_FORM);
 495                 }
 496
 497                 // Is a group open?
 498                 if ($this->groupOpened === true) {
 499                         // Then automatically close it here
 500                         $this->addFormGroup("unknown", "");
 501                 }
 502
 503                 // Generate the content
 504                 $inputContent = sprintf("       <div id=\"form_note\">
 505                 %s
 506         </div>",
 507                         $formNotes
 508                 );
 509
 510                 // And add it
 511                 $this->addContent($inputContent);
 512         }
 513
 514         /**
 515          * Checks wether the registration requires a valid email address
 516          *
 517          * @return      $required       Wether the email address is required
 518          */
 519         public function ifRegisterRequiresEmailVerification () {
 520                 $required = ($this->getConfigInstance()->readConfig('register_requires_email') == "Y");
 521                 return $required;
 522         }
 523
 524         /**
 525          * Checks wether profile data shall be asked
 526          *
 527          * @return      $required       Wether profile shall be asked
 528          */
 529         public function ifRegisterIncludesProfile () {
 530                 $required = ($this->getConfigInstance()->readConfig('register_includes_profile') == "Y");
 531                 return $required;
 532         }
 533
 534         /**
 535          * Checks wether personal data shall be asked
 536          *
 537          * @return      $required       Wether personal data shall be asked
 538          */
 539         public function ifRegisterIncludesPersonaData () {
 540                 $required = ($this->getConfigInstance()->readConfig('register_personal_data') == "Y");
 541                 return $required;
 542         }
 543
 544         /**
 545          * Checks wether email addresses can only be once used
 546          *
 547          * @return      $isUnique
 548          */
 549         public function ifEmailMustBeUnique () {
 550                 $isUnique = ($this->getConfigInstance()->readConfig('register_email_unique') == "Y");
 551                 return $isUnique;
 552         }
 553
 554         /**
 555          * Checks wether the specified chat protocol is enabled in this form
 556          *
 557          * @return      $required       Wether the specified chat protocol is enabled
 558          */
 559         public function ifChatEnabled ($chatProtocol) {
 560                 $required = ($this->getConfigInstance()->readConfig(sprintf("chat_enabled_%s", $chatProtocol)) == "Y");
 561                 return $required;
 562         }
 563
 564         /**
 565          * Flushs the content out (not yet secured against open forms, etc.!) or
 566          * throw an exception if it is not yet closed
 567          *
 568          * @return      void
 569          * @throws      FormOpenedException             If the form is still open
 570          */
 571         public function flushContent () {
 572                 // Is the form still open?
 573                 if ($this->formOpened === true) {
 574                         // Throw an exception
 575                         throw new FormOpenedException ($this, self::EXCEPTION_OPENED_FORM);
 576                 }
 577
 578                 // Send content to template engine
 579                 $this->getTemplateInstance()->assignVariable($this->formName, $this->getContent());
 580         }
 581 }
 582
 583 // [EOF]
 584 ?>