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/lib/pear/HTML/QuickForm/ -> select.php (source)

   1  <?php
   2  /* vim: set expandtab tabstop=4 shiftwidth=4: */
   3  // +----------------------------------------------------------------------+
   4  // | PHP version 4.0                                                      |
   5  // +----------------------------------------------------------------------+
   6  // | Copyright (c) 1997-2003 The PHP Group                                |
   7  // +----------------------------------------------------------------------+
   8  // | This source file is subject to version 2.0 of the PHP license,       |
   9  // | that is bundled with this package in the file LICENSE, and is        |
  10  // | available at through the world-wide-web at                           |
  11  // | http://www.php.net/license/2_02.txt.                                 |
  12  // | If you did not receive a copy of the PHP license and are unable to   |
  13  // | obtain it through the world-wide-web, please send a note to          |
  14  // | [email protected] so we can mail you a copy immediately.               |
  15  // +----------------------------------------------------------------------+
  16  // | Authors: Adam Daniel <[email protected]>                        |
  17  // |          Bertrand Mansion <[email protected]>                     |
  18  // +----------------------------------------------------------------------+
  19  //
  20  // $Id$
  21  
  22  require_once('HTML/QuickForm/element.php');
  23  
  24  /**
  25   * Class to dynamically create an HTML SELECT
  26   *
  27   * @author       Adam Daniel <[email protected]>
  28   * @author       Bertrand Mansion <[email protected]>
  29   * @version      1.0
  30   * @since        PHP4.04pl1
  31   * @access       public
  32   */
  33  class HTML_QuickForm_select extends HTML_QuickForm_element {
  34      
  35      // {{{ properties
  36  
  37      /**
  38       * Contains the select options
  39       *
  40       * @var       array
  41       * @since     1.0
  42       * @access    private
  43       */
  44      var $_options = array();
  45      
  46      /**
  47       * Default values of the SELECT
  48       * 
  49       * @var       string
  50       * @since     1.0
  51       * @access    private
  52       */
  53      var $_values = null;
  54  
  55      // }}}
  56      // {{{ constructor
  57          
  58      /**
  59       * Class constructor
  60       * 
  61       * @param     string    Select name attribute
  62       * @param     mixed     Label(s) for the select
  63       * @param     mixed     Data to be used to populate options
  64       * @param     mixed     Either a typical HTML attribute string or an associative array
  65       * @since     1.0
  66       * @access    public
  67       * @return    void
  68       */
  69      function HTML_QuickForm_select($elementName=null, $elementLabel=null, $options=null, $attributes=null)
  70      {
  71          HTML_QuickForm_element::HTML_QuickForm_element($elementName, $elementLabel, $attributes);
  72          $this->_persistantFreeze = true;
  73          $this->_type = 'select';
  74          if (isset($options)) {
  75              $this->load($options);
  76          }
  77      } //end constructor
  78      
  79      // }}}
  80      // {{{ apiVersion()
  81  
  82      /**
  83       * Returns the current API version 
  84       * 
  85       * @since     1.0
  86       * @access    public
  87       * @return    double
  88       */
  89      function apiVersion()
  90      {
  91          return 2.3;
  92      } //end func apiVersion
  93  
  94      // }}}
  95      // {{{ setSelected()
  96  
  97      /**
  98       * Sets the default values of the select box
  99       * 
 100       * @param     mixed    $values  Array or comma delimited string of selected values
 101       * @since     1.0
 102       * @access    public
 103       * @return    void
 104       */
 105      function setSelected($values)
 106      {
 107          if (is_string($values) && $this->getMultiple()) {
 108              $values = preg_split("/[ ]?,[ ]?/", $values);
 109          }
 110          if (is_array($values)) {
 111              $this->_values = array_values($values);
 112          } else {
 113              $this->_values = array($values);
 114          }
 115      } //end func setSelected
 116      
 117      // }}}
 118      // {{{ getSelected()
 119  
 120      /**
 121       * Returns an array of the selected values
 122       * 
 123       * @since     1.0
 124       * @access    public
 125       * @return    array of selected values
 126       */
 127      function getSelected()
 128      {
 129          return $this->_values;
 130      } // end func getSelected
 131  
 132      // }}}
 133      // {{{ setName()
 134  
 135      /**
 136       * Sets the input field name
 137       * 
 138       * @param     string    $name   Input field name attribute
 139       * @since     1.0
 140       * @access    public
 141       * @return    void
 142       */
 143      function setName($name)
 144      {
 145          $this->updateAttributes(array('name' => $name));
 146      } //end func setName
 147      
 148      // }}}
 149      // {{{ getName()
 150  
 151      /**
 152       * Returns the element name
 153       * 
 154       * @since     1.0
 155       * @access    public
 156       * @return    string
 157       */
 158      function getName()
 159      {
 160          return $this->getAttribute('name');
 161      } //end func getName
 162  
 163      // }}}
 164      // {{{ getPrivateName()
 165  
 166      /**
 167       * Returns the element name (possibly with brackets appended)
 168       * 
 169       * @since     1.0
 170       * @access    public
 171       * @return    string
 172       */
 173      function getPrivateName()
 174      {
 175          if ($this->getAttribute('multiple')) {
 176              return $this->getName() . '[]';
 177          } else {
 178              return $this->getName();
 179          }
 180      } //end func getPrivateName
 181  
 182      // }}}
 183      // {{{ setValue()
 184  
 185      /**
 186       * Sets the value of the form element
 187       *
 188       * @param     mixed    $values  Array or comma delimited string of selected values
 189       * @since     1.0
 190       * @access    public
 191       * @return    void
 192       */
 193      function setValue($value)
 194      {
 195          $this->setSelected($value);
 196      } // end func setValue
 197  
 198      // }}}
 199      // {{{ getValue()
 200  
 201      /**
 202       * Returns an array of the selected values
 203       * 
 204       * @since     1.0
 205       * @access    public
 206       * @return    array of selected values
 207       */
 208      function getValue()
 209      {
 210          return $this->_values;
 211      } // end func getValue
 212  
 213      // }}}
 214      // {{{ setSize()
 215  
 216      /**
 217       * Sets the select field size, only applies to 'multiple' selects
 218       * 
 219       * @param     int    $size  Size of select  field
 220       * @since     1.0
 221       * @access    public
 222       * @return    void
 223       */
 224      function setSize($size)
 225      {
 226          $this->updateAttributes(array('size' => $size));
 227      } //end func setSize
 228      
 229      // }}}
 230      // {{{ getSize()
 231  
 232      /**
 233       * Returns the select field size
 234       * 
 235       * @since     1.0
 236       * @access    public
 237       * @return    int
 238       */
 239      function getSize()
 240      {
 241          return $this->getAttribute('size');
 242      } //end func getSize
 243  
 244      // }}}
 245      // {{{ setMultiple()
 246  
 247      /**
 248       * Sets the select mutiple attribute
 249       * 
 250       * @param     bool    $multiple  Whether the select supports multi-selections
 251       * @since     1.2
 252       * @access    public
 253       * @return    void
 254       */
 255      function setMultiple($multiple)
 256      {
 257          if ($multiple) {
 258              $this->updateAttributes(array('multiple' => 'multiple'));
 259          } else {
 260              $this->removeAttribute('multiple');
 261          }
 262      } //end func setMultiple
 263      
 264      // }}}
 265      // {{{ getMultiple()
 266  
 267      /**
 268       * Returns the select mutiple attribute
 269       * 
 270       * @since     1.2
 271       * @access    public
 272       * @return    bool    true if multiple select, false otherwise
 273       */
 274      function getMultiple()
 275      {
 276          return (bool)$this->getAttribute('multiple');
 277      } //end func getMultiple
 278  
 279      // }}}
 280      // {{{ addOption()
 281  
 282      /**
 283       * Adds a new OPTION to the SELECT
 284       *
 285       * @param     string    $text       Display text for the OPTION
 286       * @param     string    $value      Value for the OPTION
 287       * @param     mixed     $attributes Either a typical HTML attribute string 
 288       *                                  or an associative array
 289       * @since     1.0
 290       * @access    public
 291       * @return    void
 292       */
 293      function addOption($text, $value, $attributes=null)
 294      {
 295          if (null === $attributes) {
 296              $attributes = array('value' => $value);
 297          } else {
 298              $attributes = $this->_parseAttributes($attributes);
 299              if (isset($attributes['selected'])) {
 300                  // the 'selected' attribute will be set in toHtml()
 301                  $this->_removeAttr('selected', $attributes);
 302                  if (is_null($this->_values)) {
 303                      $this->_values = array($value);
 304                  } elseif (!in_array($value, $this->_values)) {
 305                      $this->_values[] = $value;
 306                  }
 307              }
 308              $this->_updateAttrArray($attributes, array('value' => $value));
 309          }
 310          $this->_options[] = array('text' => $text, 'attr' => $attributes);
 311      } // end func addOption
 312      
 313      // }}}
 314      // {{{ loadArray()
 315  
 316      /**
 317       * Loads the options from an associative array
 318       * 
 319       * @param     array    $arr     Associative array of options
 320       * @param     mixed    $values  (optional) Array or comma delimited string of selected values
 321       * @since     1.0
 322       * @access    public
 323       * @return    PEAR_Error on error or true
 324       * @throws    PEAR_Error
 325       */
 326      function loadArray($arr, $values=null)
 327      {
 328          if (!is_array($arr)) {
 329              return self::raiseError('Argument 1 of HTML_Select::loadArray is not a valid array');
 330          }
 331          if (isset($values)) {
 332              $this->setSelected($values);
 333          }
 334          foreach ($arr as $key => $val) {
 335              // Warning: new API since release 2.3
 336              $this->addOption($val, $key);
 337          }
 338          return true;
 339      } // end func loadArray
 340  
 341      // }}}
 342      // {{{ loadDbResult()
 343  
 344      /**
 345       * Loads the options from DB_result object
 346       * 
 347       * If no column names are specified the first two columns of the result are
 348       * used as the text and value columns respectively
 349       * @param     object    $result     DB_result object 
 350       * @param     string    $textCol    (optional) Name of column to display as the OPTION text 
 351       * @param     string    $valueCol   (optional) Name of column to use as the OPTION value 
 352       * @param     mixed     $values     (optional) Array or comma delimited string of selected values
 353       * @since     1.0
 354       * @access    public
 355       * @return    PEAR_Error on error or true
 356       * @throws    PEAR_Error
 357       */
 358      function loadDbResult(&$result, $textCol=null, $valueCol=null, $values=null)
 359      {
 360          if (!is_object($result) || !is_a($result, 'db_result')) {
 361              return self::raiseError('Argument 1 of HTML_Select::loadDbResult is not a valid DB_result');
 362          }
 363          if (isset($values)) {
 364              $this->setValue($values);
 365          }
 366          $fetchMode = ($textCol && $valueCol) ? DB_FETCHMODE_ASSOC : DB_FETCHMODE_ORDERED;
 367          while (is_array($row = $result->fetchRow($fetchMode)) ) {
 368              if ($fetchMode == DB_FETCHMODE_ASSOC) {
 369                  $this->addOption($row[$textCol], $row[$valueCol]);
 370              } else {
 371                  $this->addOption($row[0], $row[1]);
 372              }
 373          }
 374          return true;
 375      } // end func loadDbResult
 376      
 377      // }}}
 378      // {{{ loadQuery()
 379  
 380      /**
 381       * Queries a database and loads the options from the results
 382       *
 383       * @param     mixed     $conn       Either an existing DB connection or a valid dsn 
 384       * @param     string    $sql        SQL query string
 385       * @param     string    $textCol    (optional) Name of column to display as the OPTION text 
 386       * @param     string    $valueCol   (optional) Name of column to use as the OPTION value 
 387       * @param     mixed     $values     (optional) Array or comma delimited string of selected values
 388       * @since     1.1
 389       * @access    public
 390       * @return    void
 391       * @throws    PEAR_Error
 392       */
 393      function loadQuery(&$conn, $sql, $textCol=null, $valueCol=null, $values=null)
 394      {
 395          if (is_string($conn)) {
 396              require_once('DB.php');
 397              $dbConn = &DB::connect($conn, true);
 398              if (DB::isError($dbConn)) {
 399                  return $dbConn;
 400              }
 401          } elseif (is_subclass_of($conn, "db_common")) {
 402              $dbConn = &$conn;
 403          } else {
 404              return self::raiseError('Argument 1 of HTML_Select::loadQuery is not a valid type');
 405          }
 406          $result = $dbConn->query($sql);
 407          if (DB::isError($result)) {
 408              return $result;
 409          }
 410          $this->loadDbResult($result, $textCol, $valueCol, $values);
 411          $result->free();
 412          if (is_string($conn)) {
 413              $dbConn->disconnect();
 414          }
 415          return true;
 416      } // end func loadQuery
 417  
 418      // }}}
 419      // {{{ load()
 420  
 421      /**
 422       * Loads options from different types of data sources
 423       *
 424       * This method is a simulated overloaded method.  The arguments, other than the
 425       * first are optional and only mean something depending on the type of the first argument.
 426       * If the first argument is an array then all arguments are passed in order to loadArray.
 427       * If the first argument is a db_result then all arguments are passed in order to loadDbResult.
 428       * If the first argument is a string or a DB connection then all arguments are 
 429       * passed in order to loadQuery.
 430       * @param     mixed     $options     Options source currently supports assoc array or DB_result
 431       * @param     mixed     $param1     (optional) See function detail
 432       * @param     mixed     $param2     (optional) See function detail
 433       * @param     mixed     $param3     (optional) See function detail
 434       * @param     mixed     $param4     (optional) See function detail
 435       * @since     1.1
 436       * @access    public
 437       * @return    PEAR_Error on error or true
 438       * @throws    PEAR_Error
 439       */
 440      function load(&$options, $param1=null, $param2=null, $param3=null, $param4=null)
 441      {
 442          switch (true) {
 443              case is_array($options):
 444                  return $this->loadArray($options, $param1);
 445                  break;
 446              case (is_a($options, 'db_result')):
 447                  return $this->loadDbResult($options, $param1, $param2, $param3);
 448                  break;
 449              case (is_string($options) && !empty($options) || is_subclass_of($options, "db_common")):
 450                  return $this->loadQuery($options, $param1, $param2, $param3, $param4);
 451                  break;
 452          }
 453      } // end func load
 454      
 455      // }}}
 456      // {{{ toHtml()
 457  
 458      /**
 459       * Returns the SELECT in HTML
 460       *
 461       * @since     1.0
 462       * @access    public
 463       * @return    string
 464       */
 465      function toHtml()
 466      {
 467          if ($this->_flagFrozen) {
 468              return $this->getFrozenHtml();
 469          } else {
 470              $tabs    = $this->_getTabs();
 471              $strHtml = '';
 472  
 473              if ($this->getComment() != '') {
 474                  $strHtml .= $tabs . '<!-- ' . $this->getComment() . " //-->\n";
 475              }
 476  
 477              if (!$this->getMultiple()) {
 478                  $attrString = $this->_getAttrString($this->_attributes);
 479              } else {
 480                  $myName = $this->getName();
 481                  $this->setName($myName . '[]');
 482                  $attrString = $this->_getAttrString($this->_attributes);
 483                  $this->setName($myName);
 484              }
 485              $strHtml .= $tabs . '<select' . $attrString . ">\n";
 486  
 487              foreach ($this->_options as $option) {
 488                  if (is_array($this->_values) && in_array((string)$option['attr']['value'], $this->_values)) {
 489                      $this->_updateAttrArray($option['attr'], array('selected' => 'selected'));
 490                  }
 491                  $strHtml .= $tabs . "\t<option" . $this->_getAttrString($option['attr']) . '>' .
 492                              $option['text'] . "</option>\n";
 493              }
 494  
 495              return $strHtml . $tabs . '</select>';
 496          }
 497      } //end func toHtml
 498      
 499      // }}}
 500      // {{{ getFrozenHtml()
 501  
 502      /**
 503       * Returns the value of field without HTML tags
 504       * 
 505       * @since     1.0
 506       * @access    public
 507       * @return    string
 508       */
 509      function getFrozenHtml()
 510      {
 511          $value = array();
 512          if (is_array($this->_values)) {
 513              foreach ($this->_values as $key => $val) {
 514                  for ($i = 0, $optCount = count($this->_options); $i < $optCount; $i++) {
 515                      if ((string)$val == (string)$this->_options[$i]['attr']['value']) {
 516                          $value[$key] = $this->_options[$i]['text'];
 517                          break;
 518                      }
 519                  }
 520              }
 521          }
 522          $html = empty($value)? '&nbsp;': join('<br />', $value);
 523          if ($this->_persistantFreeze) {
 524              $name = $this->getPrivateName();
 525              // Only use id attribute if doing single hidden input
 526              if (1 == count($value)) {
 527                  $id     = $this->getAttribute('id');
 528                  $idAttr = isset($id)? array('id' => $id): array();
 529              } else {
 530                  $idAttr = array();
 531              }
 532              foreach ($value as $key => $item) {
 533                  $html .= '<input' . $this->_getAttrString(array(
 534                               'type'  => 'hidden',
 535                               'name'  => $name,
 536                               'value' => $this->_values[$key]
 537                           ) + $idAttr) . ' />';
 538              }
 539          }
 540          return $html;
 541      } //end func getFrozenHtml
 542  
 543      // }}}
 544      // {{{ exportValue()
 545  
 546     /**
 547      * We check the options and return only the values that _could_ have been
 548      * selected. We also return a scalar value if select is not "multiple"
 549      */
 550      function exportValue(&$submitValues, $assoc = false)
 551      {
 552          $value = $this->_findValue($submitValues);
 553          if (is_null($value)) {
 554              $value = $this->getValue();
 555          } elseif(!is_array($value)) {
 556              $value = array($value);
 557          }
 558          if (is_array($value) && !empty($this->_options)) {
 559              $cleanValue = null;
 560              foreach ($value as $v) {
 561                  for ($i = 0, $optCount = count($this->_options); $i < $optCount; $i++) {
 562                      if ($v == $this->_options[$i]['attr']['value']) {
 563                          $cleanValue[] = $v;
 564                          break;
 565                      }
 566                  }
 567              }
 568          } else {
 569              $cleanValue = $value;
 570          }
 571          if (is_array($cleanValue) && !$this->getMultiple()) {
 572              return $this->_prepareValue($cleanValue[0], $assoc);
 573          } else {
 574              return $this->_prepareValue($cleanValue, $assoc);
 575          }
 576      }
 577      
 578      // }}}
 579      // {{{ onQuickFormEvent()
 580  
 581      function onQuickFormEvent($event, $arg, &$caller)
 582      {
 583          if ('updateValue' == $event) {
 584              $value = $this->_findValue($caller->_constantValues);
 585              if (null === $value) {
 586                  $value = $this->_findValue($caller->_submitValues);
 587                  // Fix for bug #4465 & #5269
 588                  // XXX: should we push this to element::onQuickFormEvent()?
 589                  if (null === $value && (!$caller->isSubmitted() || !$this->getMultiple())) {
 590                      $value = $this->_findValue($caller->_defaultValues);
 591                  }
 592              }
 593              if (null !== $value) {
 594                  $this->setValue($value);
 595              }
 596              return true;
 597          } else {
 598              return parent::onQuickFormEvent($event, $arg, $caller);
 599          }
 600      }
 601  
 602      // }}}
 603  } //end class HTML_QuickForm_select
 604  ?>


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