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- <?php
- /* vim: set expandtab tabstop=4 shiftwidth=4: */
- // +----------------------------------------------------------------------+
- // | PHP version 4.0 |
- // +----------------------------------------------------------------------+
- // | Copyright (c) 1997, 1998, 1999, 2000, 2001 The PHP Group |
- // +----------------------------------------------------------------------+
- // | This source file is subject to version 2.0 of the PHP license, |
- // | that is bundled with this package in the file LICENSE, and is |
- // | available at through the world-wide-web at |
- // | http://www.php.net/license/2_02.txt. |
- // | If you did not receive a copy of the PHP license and are unable to |
- // | obtain it through the world-wide-web, please send a note to |
- // | license@php.net so we can mail you a copy immediately. |
- // +----------------------------------------------------------------------+
- // | Authors: Adam Daniel <adaniel1@eesus.jnj.com> |
- // | Bertrand Mansion <bmansion@mamasam.com> |
- // +----------------------------------------------------------------------+
- //
- // $Id: advcheckbox.php,v 1.14 2004/04/19 11:40:01 avb Exp $
-
- require_once('HTML/QuickForm/checkbox.php');
-
- /**
- * HTML class for an advanced checkbox type field
- *
- * Basically this fixes a problem that HTML has had
- * where checkboxes can only pass a single value (the
- * value of the checkbox when checked). A value for when
- * the checkbox is not checked cannot be passed, and
- * furthermore the checkbox variable doesn't even exist if
- * the checkbox was submitted unchecked.
- *
- * It works by creating a hidden field with the passed-in name
- * and creating the checkbox with no name, but with a javascript
- * onclick which sets the value of the hidden field.
- *
- * @author Jason Rust <jrust@php.net>
- * @since 2.0
- * @access public
- */
- class HTML_QuickForm_advcheckbox extends HTML_QuickForm_checkbox
- {
- // {{{ properties
-
- /**
- * The values passed by the hidden elment
- *
- * @var array
- * @access private
- */
- var $_values = null;
-
- /**
- * The default value
- *
- * @var boolean
- * @access private
- */
- var $_currentValue = null;
-
- // }}}
- // {{{ constructor
-
- /**
- * Class constructor
- *
- * @param string $elementName (optional)Input field name attribute
- * @param string $elementLabel (optional)Input field label
- * @param string $text (optional)Text to put after the checkbox
- * @param mixed $attributes (optional)Either a typical HTML attribute string
- * or an associative array
- * @param mixed $values (optional)Values to pass if checked or not checked
- *
- * @since 1.0
- * @access public
- * @return void
- */
- function HTML_QuickForm_advcheckbox($elementName=null, $elementLabel=null, $text=null, $attributes=null, $values=null)
- {
- $this->HTML_QuickForm_checkbox($elementName, $elementLabel, $text, $attributes);
- $this->setValues($values);
- } //end constructor
-
- // }}}
- // {{{ getPrivateName()
-
- /**
- * Gets the pribate name for the element
- *
- * @param string $elementName The element name to make private
- *
- * @access public
- * @return string
- */
- function getPrivateName($elementName)
- {
- return '__'.$elementName;
- }
-
- // }}}
- // {{{ getOnclickJs()
-
- /**
- * Create the javascript for the onclick event which will
- * set the value of the hidden field
- *
- * @param string $elementName The element name
- *
- * @access public
- * @return string
- */
- function getOnclickJs($elementName)
- {
- $onclickJs = 'if (this.checked) { this.form[\''.$elementName.'\'].value=\''.addcslashes($this->_values[1], '\'').'\'; }';
- $onclickJs .= 'else { this.form[\''.$elementName.'\'].value=\''.addcslashes($this->_values[0], '\'').'\'; }';
- return $onclickJs;
- }
-
- // }}}
- // {{{ setValues()
-
- /**
- * Sets the values used by the hidden element
- *
- * @param mixed $values The values, either a string or an array
- *
- * @access public
- * @return void
- */
- function setValues($values)
- {
- if (empty($values)) {
- // give it default checkbox behavior
- $this->_values = array('', 1);
- } elseif (is_scalar($values)) {
- // if it's string, then assume the value to
- // be passed is for when the element is checked
- $this->_values = array('', $values);
- } else {
- $this->_values = $values;
- }
- $this->setChecked($this->_currentValue == $this->_values[1]);
- }
-
- // }}}
- // {{{ setValue()
-
- /**
- * Sets the element's value
- *
- * @param mixed Element's value
- * @access public
- */
- function setValue($value)
- {
- $this->setChecked(isset($this->_values[1]) && $value == $this->_values[1]);
- $this->_currentValue = $value;
- }
-
- // }}}
- // {{{ getValue()
-
- /**
- * Returns the element's value
- *
- * @access public
- * @return mixed
- */
- function getValue()
- {
- if (is_array($this->_values)) {
- return $this->_values[$this->getChecked()? 1: 0];
- } else {
- return null;
- }
- }
-
- // }}}
- // {{{ toHtml()
-
- /**
- * Returns the checkbox element in HTML
- * and the additional hidden element in HTML
- *
- * @access public
- * @return string
- */
- function toHtml()
- {
- if ($this->_flagFrozen) {
- return parent::toHtml();
- } else {
- $oldName = $this->getName();
- $oldJs = $this->getAttribute('onclick');
- $this->updateAttributes(array(
- 'name' => $this->getPrivateName($oldName),
- 'onclick' => $this->getOnclickJs($oldName) . ' ' . $oldJs
- ));
- $html = parent::toHtml() . '<input type="hidden" name="' . $oldName .
- '" value="' . $this->getValue() . '" />';
- // revert the name and JS, in case this method will be called once more
- $this->updateAttributes(array(
- 'name' => $oldName,
- 'onclick' => $oldJs
- ));
- return $html;
- }
- } //end func toHtml
-
- // }}}
- // {{{ getFrozenHtml()
-
- /**
- * Unlike checkbox, this has to append a hidden input in both
- * checked and non-checked states
- */
- function getFrozenHtml()
- {
- return ($this->getChecked()? '<tt>[x]</tt>': '<tt>[ ]</tt>') .
- $this->_getPersistantData();
- }
-
- // }}}
- // {{{ onQuickFormEvent()
-
- /**
- * Called by HTML_QuickForm whenever form event is made on this element
- *
- * @param string $event Name of event
- * @param mixed $arg event arguments
- * @param object $caller calling object
- * @since 1.0
- * @access public
- * @return void
- */
- function onQuickFormEvent($event, $arg, &$caller)
- {
- switch ($event) {
- case 'updateValue':
- // constant values override both default and submitted ones
- // default values are overriden by submitted
- $value = $this->_findValue($caller->_constantValues);
- if (null === $value) {
- $value = $this->_findValue($caller->_submitValues);
- if (null === $value) {
- $value = $this->_findValue($caller->_defaultValues);
- }
- }
- if (null !== $value) {
- $this->setValue($value);
- }
- break;
- default:
- parent::onQuickFormEvent($event, $arg, $caller);
- }
- return true;
- } // end func onQuickFormLoad
-
- // }}}
- // {{{ exportValue()
-
- /**
- * This element has a value even if it is not checked, thus we override
- * checkbox's behaviour here
- */
- function exportValue(&$submitValues, $assoc)
- {
- $value = $this->_findValue($submitValues);
- if (null === $value) {
- $value = $this->getValue();
- } elseif (is_array($this->_values) && ($value != $this->_values[0]) && ($value != $this->_values[1])) {
- $value = null;
- }
- return $this->_prepareValue($value, $assoc);
- }
- // }}}
- } //end class HTML_QuickForm_advcheckbox
- ?>
-