squirrelmail/functions/forms.php
2008-02-24 22:35:08 +00:00

333 lines
14 KiB
PHP

<?php
/**
* forms.php - html form functions
*
* Functions to build forms in a safe and consistent manner.
* All attribute values are sanitized with htmlspecialchars().
//FIXME: I think the Template class might be better place to sanitize inside assign() method
*
* Currently functions don't provide simple wrappers for file and
* image input fields, support only submit and reset buttons and use
* html input tags for buttons.
*
* Since 1.5.1:
*
* * all form functions should support id tags. Original
* idea by dugan <at> passwall.com. Tags can be used for Section 508
* or WAI compliance.
*
* * input tag functions accept extra html attributes that can be submitted
* in $aAttribs array.
*
* * default css class attributes are added.
*
* @link http://www.section508.gov/ Section 508
* @link http://www.w3.org/WAI/ Web Accessibility Initiative (WAI)
* @link http://www.w3.org/TR/html4/ W3.org HTML 4.01 form specs
* @copyright &copy; 2004-2007 The SquirrelMail Project Team
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
* @version $Id$
* @package squirrelmail
* @subpackage forms
* @since 1.4.3 and 1.5.1
*/
/**
* Helper function to create form fields, not to be called directly,
* only by other functions below.
*
* Function used different syntax before 1.5.1
* @param string $sType type of input field. Possible values (html 4.01
* specs.): text, password, checkbox, radio, submit, reset, file,
* hidden, image, button.
* @param array $aAttribs (since 1.5.1) extra attributes. Array key is
* attribute name, array value is attribute value. Array keys must use
* lowercase.
* @return string html formated input field
* @deprecated use other functions that provide simple wrappers to this function
*/
function addInputField($sType, $aAttribs=array()) {
$sAttribs = '';
// define unique identifier
if (! isset($aAttribs['id']) && isset($aAttribs['name']) && ! is_null($aAttribs['name'])) {
/**
* if 'id' is not set, set it to 'name' and replace brackets
* with underscores. 'name' might contain field name with squire
* brackets (array). Brackets are not allowed in id (validator.w3.org
* fails to validate document). According to html 4.01 manual cdata
* type description, 'name' attribute uses same type, but validator.w3.org
* does not barf on brackets in 'name' attributes.
*/
$aAttribs['id'] = strtr($aAttribs['name'],'[]','__');
}
global $oTemplate;
$oTemplate->assign('type', $sType);
//FIXME: all the values in the $aAttribs list used to go thru htmlspecialchars()... I would propose that most everything that is assigned to the template should go thru that *in the template class* on its way between here and the actual template file. Otherwise we have to do something like: foreach ($aAttribs as $key => $value) $aAttribs[$key] = htmlspecialchars($value);
$oTemplate->assign('aAttribs', $aAttribs);
return $oTemplate->fetch('input.tpl');
}
/**
* Password input field
* @param string $sName field name
* @param string $sValue initial password value
* @param array $aAttribs (since 1.5.1) extra attributes
* @return string html formated password field
*/
function addPwField($sName, $sValue = null, $aAttribs=array()) {
$aAttribs['name'] = $sName;
$aAttribs['value'] = (! is_null($sValue) ? $sValue : '');
// add default css
if (! isset($aAttribs['class'])) $aAttribs['class'] = 'sqmpwfield';
return addInputField('password',$aAttribs);
}
/**
* Form checkbox
* @param string $sName field name
* @param boolean $bChecked controls if field is checked
* @param string $sValue
* @param array $aAttribs (since 1.5.1) extra attributes
* @return string html formated checkbox field
*/
function addCheckBox($sName, $bChecked = false, $sValue = null, $aAttribs=array()) {
$aAttribs['name'] = $sName;
if ($bChecked) $aAttribs['checked'] = 'checked';
if (! is_null($sValue)) $aAttribs['value'] = $sValue;
// add default css
if (! isset($aAttribs['class'])) $aAttribs['class'] = 'sqmcheckbox';
return addInputField('checkbox',$aAttribs);
}
/**
* Form radio box
* @param string $sName field name
* @param boolean $bChecked controls if field is selected
* @param string $sValue
* @param array $aAttribs (since 1.5.1) extra attributes.
* @return string html formated radio box
*/
function addRadioBox($sName, $bChecked = false, $sValue = null, $aAttribs=array()) {
$aAttribs['name'] = $sName;
if ($bChecked) $aAttribs['checked'] = 'checked';
if (! is_null($sValue)) $aAttribs['value'] = $sValue;
if (! isset($aAttribs['id'])) $aAttribs['id'] = $sName . $sValue;
// add default css
if (! isset($aAttribs['class'])) $aAttribs['class'] = 'sqmradiobox';
return addInputField('radio', $aAttribs);
}
/**
* A hidden form field.
* @param string $sName field name
* @param string $sValue field value
* @param array $aAttribs (since 1.5.1) extra attributes
* @return html formated hidden form field
*/
function addHidden($sName, $sValue, $aAttribs=array()) {
$aAttribs['name'] = $sName;
$aAttribs['value'] = $sValue;
// add default css
if (! isset($aAttribs['class'])) $aAttribs['class'] = 'sqmhiddenfield';
return addInputField('hidden', $aAttribs);
}
/**
* An input textbox.
* @param string $sName field name
* @param string $sValue initial field value
* @param integer $iSize field size (number of characters)
* @param integer $iMaxlength maximum number of characters the user may enter
* @param array $aAttribs (since 1.5.1) extra attributes - should be given
* in the form array('attribute_name' => 'attribute_value', ...)
* @return string html formated text input field
*/
function addInput($sName, $sValue = '', $iSize = 0, $iMaxlength = 0, $aAttribs=array()) {
$aAttribs['name'] = $sName;
$aAttribs['value'] = $sValue;
if ($iSize) $aAttribs['size'] = (int)$iSize;
if ($iMaxlength) $aAttribs['maxlength'] = (int)$iMaxlength;
// add default css
if (! isset($aAttribs['class'])) $aAttribs['class'] = 'sqmtextfield';
return addInputField('text', $aAttribs);
}
/**
* Function to create a selectlist from an array.
* @param string $sName Field name
* @param array $aValues Field values array(key => value) results in:
* <option value="key">value</option>,
* although if $bUsekeys is FALSE, then it changes to:
* <option value="value">value</option>
* @param mixed $default The key(s) that will be selected (it is OK to pass
* in an array here in the case of multiple select lists)
* @param boolean $bUsekeys Use the keys of the array as option value or not
* @param array $aAttribs (since 1.5.1) Extra attributes
* @param boolean $bMultiple When TRUE, a multiple select list will be shown
* (OPTIONAL; default is FALSE (single select list))
* @param int $iSize Desired height of multiple select boxes
* (OPTIONAL; default is SMOPT_SIZE_NORMAL)
* (only applicable when $bMultiple is TRUE)
*
* @return string html formated selection box
* @todo add attributes argument for option tags and default css
*/
function addSelect($sName, $aValues, $default = null, $bUsekeys = false, $aAttribs = array(), $bMultiple = FALSE, $iSize = SMOPT_SIZE_NORMAL) {
// only one element
if (!$bMultiple && count($aValues) == 1) {
$k = key($aValues); $v = array_pop($aValues);
return addHidden($sName, ($bUsekeys ? $k : $v), $aAttribs)
. htmlspecialchars($v);
}
// make sure $default is an array, since multiple select lists
// need the chance to have more than one default...
//
if (!is_array($default))
$default = array($default);
global $oTemplate;
//FIXME: all the values in the $aAttribs list and $sName and both the keys and values in $aValues used to go thru htmlspecialchars()... I would propose that most everything that is assigned to the template should go thru that *in the template class* on its way between here and the actual template file. Otherwise we have to do something like: foreach ($aAttribs as $key => $value) $aAttribs[$key] = htmlspecialchars($value); $sName = htmlspecialchars($sName); $aNewValues = array(); foreach ($aValues as $key => $value) $aNewValues[htmlspecialchars($key)] = htmlspecialchars($value); $aValues = $aNewValues; And probably this too because it has to be matched to a value that has already been sanitized: $default = htmlspecialchars($default); (oops, watch out for when $default is an array! (multiple select lists))
$oTemplate->assign('aAttribs', $aAttribs);
$oTemplate->assign('aValues', $aValues);
$oTemplate->assign('bUsekeys', $bUsekeys);
$oTemplate->assign('default', $default);
$oTemplate->assign('name', $sName);
$oTemplate->assign('multiple', $bMultiple);
$oTemplate->assign('size', $iSize);
return $oTemplate->fetch('select.tpl');
}
/**
* Normal button
*
* Note the switched value/name parameters!
* Note also that regular buttons are not very useful unless
* used with onclick handlers, thus are only really appropriate
* if you use them after having checked if JavaScript is turned
* on by doing this: if (checkForJavascript()) ...
*
* @param string $sValue button name
* @param string $sName key name
* @param array $aAttribs extra attributes
*
* @return string html formated submit input field
*
* @since 1.5.2
*/
function addButton($sValue, $sName = null, $aAttribs=array()) {
$aAttribs['value'] = $sValue;
if (! is_null($sName)) $aAttribs['name'] = $sName;
// add default css
if (! isset($aAttribs['class'])) $aAttribs['class'] = 'sqmsubmitfield';
return addInputField('button', $aAttribs);
}
/**
* Form submission button
* Note the switched value/name parameters!
* @param string $sValue button name
* @param string $sName submitted key name
* @param array $aAttribs (since 1.5.1) extra attributes
* @return string html formated submit input field
*/
function addSubmit($sValue, $sName = null, $aAttribs=array()) {
$aAttribs['value'] = $sValue;
if (! is_null($sName)) $aAttribs['name'] = $sName;
// add default css
if (! isset($aAttribs['class'])) $aAttribs['class'] = 'sqmsubmitfield';
return addInputField('submit', $aAttribs);
}
/**
* Form reset button
* @param string $sValue button name
* @param array $aAttribs (since 1.5.1) extra attributes
* @return string html formated reset input field
*/
function addReset($sValue, $aAttribs=array()) {
$aAttribs['value'] = $sValue;
// add default css
if (! isset($aAttribs['class'])) $aAttribs['class'] = 'sqmresetfield';
return addInputField('reset', $aAttribs);
}
/**
* Textarea form element.
*
* @param string $sName field name
* @param string $sText initial field value (OPTIONAL; default empty)
* @param integer $iCols field width (number of chars) (OPTIONAL; default 40)
* @param integer $iRows field height (number of character rows) (OPTIONAL; default 10)
* @param array $aAttribs (since 1.5.1) extra attributes (OPTIONAL; default empty)
*
* @return string html formated text area field
*
*/
function addTextArea($sName, $sText = '', $iCols = 40, $iRows = 10, $aAttribs = array()) {
// no longer accept string arguments for attribs; print
// backtrace to help people fix their code
//FIXME: throw error instead?
if (!is_array($aAttribs)) {
echo '$aAttribs argument to addTextArea() must be an array<br /><pre>';
debug_print_backtrace();
echo '</pre><br />';
exit;
}
// add default css
else if (!isset($aAttribs['class'])) $aAttribs['class'] = 'sqmtextarea';
global $oTemplate;
//FIXME: all the values in the $aAttribs list as well as $sName and $sText used to go thru htmlspecialchars()... I would propose that most everything that is assigned to the template should go thru that *in the template class* on its way between here and the actual template file. Otherwise we have to do something like: foreach ($aAttribs as $key => $value) $aAttribs[$key] = htmlspecialchars($value); $sName = htmlspecialchars($sName); $sText = htmlspecialchars($sText);
$oTemplate->assign('aAttribs', $aAttribs);
$oTemplate->assign('name', $sName);
$oTemplate->assign('text', $sText);
$oTemplate->assign('cols', (int)$iCols);
$oTemplate->assign('rows', (int)$iRows);
return $oTemplate->fetch('textarea.tpl');
}
/**
* Make a <form> start-tag.
*
* @param string $sAction form handler URL
* @param string $sMethod http method used to submit form data. 'get' or 'post'
* @param string $sName form name used for identification (used for backward
* compatibility). Use of id is recommended instead.
* @param string $sEnctype content type that is used to submit data. html 4.01
* defaults to 'application/x-www-form-urlencoded'. Form
* with file field needs 'multipart/form-data' encoding type.
* @param string $sCharset charset that is used for submitted data
* @param array $aAttribs (since 1.5.1) extra attributes
*
* @return string html formated form start string
*
*/
function addForm($sAction, $sMethod = 'post', $sName = '', $sEnctype = '', $sCharset = '', $aAttribs = array()) {
global $oTemplate;
//FIXME: all the values in the $aAttribs list as well as $charset used to go thru htmlspecialchars()... I would propose that most everything that is assigned to the template should go thru that *in the template class* on its way between here and the actual template file. Otherwise we have to do something like: foreach ($aAttribs as $key => $value) $aAttribs[$key] = htmlspecialchars($value); $sCharset = htmlspecialchars($sCharset);
$oTemplate->assign('aAttribs', $aAttribs);
$oTemplate->assign('name', $sName);
$oTemplate->assign('method', $sMethod);
$oTemplate->assign('action', $sAction);
$oTemplate->assign('enctype', $sEnctype);
$oTemplate->assign('charset', $sCharset);
return $oTemplate->fetch('form.tpl');
}