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|
<?php
/*
+-----------------------------------------------------------------------+
| This file is part of the Roundcube Webmail client |
| Copyright (C) 2005-2013, The Roundcube Dev Team |
| |
| Licensed under the GNU General Public License version 3 or |
| any later version with exceptions for skins & plugins. |
| See the README file for a full license statement. |
| |
| PURPOSE: |
| Helper class to create valid XHTML code |
+-----------------------------------------------------------------------+
| Author: Thomas Bruederli <roundcube@gmail.com> |
+-----------------------------------------------------------------------+
*/
/**
* Class for HTML code creation
*
* @package Framework
* @subpackage View
*/
class html
{
protected $tagname;
protected $attrib = array();
protected $allowed = array();
protected $content;
public static $doctype = 'xhtml';
public static $lc_tags = true;
public static $common_attrib = array('id','class','style','title','align','unselectable','tabindex','role');
public static $containers = array('iframe','div','span','p','h1','h2','h3','ul','form','textarea','table','thead','tbody','tr','th','td','style','script');
/**
* Constructor
*
* @param array $attrib Hash array with tag attributes
*/
public function __construct($attrib = array())
{
if (is_array($attrib)) {
$this->attrib = $attrib;
}
}
/**
* Return the tag code
*
* @return string The finally composed HTML tag
*/
public function show()
{
return self::tag($this->tagname, $this->attrib, $this->content, array_merge(self::$common_attrib, $this->allowed));
}
/****** STATIC METHODS *******/
/**
* Generic method to create a HTML tag
*
* @param string $tagname Tag name
* @param array $attrib Tag attributes as key/value pairs
* @param string $content Optinal Tag content (creates a container tag)
* @param array $allowed_attrib List with allowed attributes, omit to allow all
* @return string The XHTML tag
*/
public static function tag($tagname, $attrib = array(), $content = null, $allowed_attrib = null)
{
if (is_string($attrib))
$attrib = array('class' => $attrib);
$inline_tags = array('a','span','img');
$suffix = $attrib['nl'] || ($content && $attrib['nl'] !== false && !in_array($tagname, $inline_tags)) ? "\n" : '';
$tagname = self::$lc_tags ? strtolower($tagname) : $tagname;
if (isset($content) || in_array($tagname, self::$containers)) {
$suffix = $attrib['noclose'] ? $suffix : '</' . $tagname . '>' . $suffix;
unset($attrib['noclose'], $attrib['nl']);
return '<' . $tagname . self::attrib_string($attrib, $allowed_attrib) . '>' . $content . $suffix;
}
else {
return '<' . $tagname . self::attrib_string($attrib, $allowed_attrib) . '>' . $suffix;
}
}
/**
*
*/
public static function doctype($type)
{
$doctypes = array(
'html5' => '<!DOCTYPE html>',
'xhtml' => '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">',
'xhtml-trans' => '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">',
'xhtml-strict' => '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">',
);
if ($doctypes[$type]) {
self::$doctype = preg_replace('/-\w+$/', '', $type);
return $doctypes[$type];
}
return '';
}
/**
* Derrived method for <div> containers
*
* @param mixed $attr Hash array with tag attributes or string with class name
* @param string $cont Div content
* @return string HTML code
* @see html::tag()
*/
public static function div($attr = null, $cont = null)
{
if (is_string($attr)) {
$attr = array('class' => $attr);
}
return self::tag('div', $attr, $cont, array_merge(self::$common_attrib, array('onclick')));
}
/**
* Derrived method for <p> blocks
*
* @param mixed $attr Hash array with tag attributes or string with class name
* @param string $cont Paragraph content
* @return string HTML code
* @see html::tag()
*/
public static function p($attr = null, $cont = null)
{
if (is_string($attr)) {
$attr = array('class' => $attr);
}
return self::tag('p', $attr, $cont, self::$common_attrib);
}
/**
* Derrived method to create <img />
*
* @param mixed $attr Hash array with tag attributes or string with image source (src)
* @return string HTML code
* @see html::tag()
*/
public static function img($attr = null)
{
if (is_string($attr)) {
$attr = array('src' => $attr);
}
return self::tag('img', $attr + array('alt' => ''), null, array_merge(self::$common_attrib,
array('src','alt','width','height','border','usemap','onclick','onerror')));
}
/**
* Derrived method for link tags
*
* @param mixed $attr Hash array with tag attributes or string with link location (href)
* @param string $cont Link content
* @return string HTML code
* @see html::tag()
*/
public static function a($attr, $cont)
{
if (is_string($attr)) {
$attr = array('href' => $attr);
}
return self::tag('a', $attr, $cont, array_merge(self::$common_attrib,
array('href','target','name','rel','onclick','onmouseover','onmouseout','onmousedown','onmouseup')));
}
/**
* Derrived method for inline span tags
*
* @param mixed $attr Hash array with tag attributes or string with class name
* @param string $cont Tag content
* @return string HTML code
* @see html::tag()
*/
public static function span($attr, $cont)
{
if (is_string($attr)) {
$attr = array('class' => $attr);
}
return self::tag('span', $attr, $cont, self::$common_attrib);
}
/**
* Derrived method for form element labels
*
* @param mixed $attr Hash array with tag attributes or string with 'for' attrib
* @param string $cont Tag content
* @return string HTML code
* @see html::tag()
*/
public static function label($attr, $cont)
{
if (is_string($attr)) {
$attr = array('for' => $attr);
}
return self::tag('label', $attr, $cont, array_merge(self::$common_attrib, array('for')));
}
/**
* Derrived method to create <iframe></iframe>
*
* @param mixed $attr Hash array with tag attributes or string with frame source (src)
* @return string HTML code
* @see html::tag()
*/
public static function iframe($attr = null, $cont = null)
{
if (is_string($attr)) {
$attr = array('src' => $attr);
}
return self::tag('iframe', $attr, $cont, array_merge(self::$common_attrib,
array('src','name','width','height','border','frameborder','onload','allowfullscreen')));
}
/**
* Derrived method to create <script> tags
*
* @param mixed $attr Hash array with tag attributes or string with script source (src)
* @param string $cont Javascript code to be placed as tag content
* @return string HTML code
* @see html::tag()
*/
public static function script($attr, $cont = null)
{
if (is_string($attr)) {
$attr = array('src' => $attr);
}
if ($cont) {
if (self::$doctype == 'xhtml')
$cont = "\n/* <![CDATA[ */\n" . $cont . "\n/* ]]> */\n";
else
$cont = "\n" . $cont . "\n";
}
return self::tag('script', $attr + array('type' => 'text/javascript', 'nl' => true),
$cont, array_merge(self::$common_attrib, array('src','type','charset')));
}
/**
* Derrived method for line breaks
*
* @return string HTML code
* @see html::tag()
*/
public static function br($attrib = array())
{
return self::tag('br', $attrib);
}
/**
* Create string with attributes
*
* @param array $attrib Associative arry with tag attributes
* @param array $allowed List of allowed attributes
* @return string Valid attribute string
*/
public static function attrib_string($attrib = array(), $allowed = null)
{
if (empty($attrib)) {
return '';
}
$allowed_f = array_flip((array)$allowed);
$attrib_arr = array();
foreach ($attrib as $key => $value) {
// skip size if not numeric
if ($key == 'size' && !is_numeric($value)) {
continue;
}
// ignore "internal" or empty attributes
if ($key == 'nl' || $value === null) {
continue;
}
// ignore not allowed attributes, except aria-* and data-*
if (!empty($allowed)) {
$is_data_attr = @substr_compare($key, 'data-', 0, 5) === 0;
$is_aria_attr = @substr_compare($key, 'aria-', 0, 5) === 0;
if (!$is_aria_attr && !$is_data_attr && !isset($allowed_f[$key])) {
continue;
}
}
// skip empty eventhandlers
if (preg_match('/^on[a-z]+/', $key) && !$value) {
continue;
}
// attributes with no value
if (in_array($key, array('checked', 'multiple', 'disabled', 'selected', 'autofocus'))) {
if ($value) {
$attrib_arr[] = $key . '="' . $key . '"';
}
}
else {
$attrib_arr[] = $key . '="' . self::quote($value) . '"';
}
}
return count($attrib_arr) ? ' '.implode(' ', $attrib_arr) : '';
}
/**
* Convert a HTML attribute string attributes to an associative array (name => value)
*
* @param string Input string
* @return array Key-value pairs of parsed attributes
*/
public static function parse_attrib_string($str)
{
$attrib = array();
$regexp = '/\s*([-_a-z]+)=(["\'])??(?(2)([^\2]*)\2|(\S+?))/Ui';
preg_match_all($regexp, stripslashes($str), $regs, PREG_SET_ORDER);
// convert attributes to an associative array (name => value)
if ($regs) {
foreach ($regs as $attr) {
$attrib[strtolower($attr[1])] = html_entity_decode($attr[3] . $attr[4]);
}
}
return $attrib;
}
/**
* Replacing specials characters in html attribute value
*
* @param string $str Input string
*
* @return string The quoted string
*/
public static function quote($str)
{
static $flags;
if (!$flags) {
$flags = ENT_COMPAT;
if (defined('ENT_SUBSTITUTE')) {
$flags |= ENT_SUBSTITUTE;
}
}
return @htmlspecialchars($str, $flags, RCUBE_CHARSET);
}
}
/**
* Class to create an HTML input field
*
* @package Framework
* @subpackage View
*/
class html_inputfield extends html
{
protected $tagname = 'input';
protected $type = 'text';
protected $allowed = array(
'type','name','value','size','tabindex','autocapitalize','required',
'autocomplete','checked','onchange','onclick','disabled','readonly',
'spellcheck','results','maxlength','src','multiple','accept',
'placeholder','autofocus',
);
/**
* Object constructor
*
* @param array $attrib Associative array with tag attributes
*/
public function __construct($attrib = array())
{
if (is_array($attrib)) {
$this->attrib = $attrib;
}
if ($attrib['type']) {
$this->type = $attrib['type'];
}
}
/**
* Compose input tag
*
* @param string $value Field value
* @param array $attrib Additional attributes to override
* @return string HTML output
*/
public function show($value = null, $attrib = null)
{
// overwrite object attributes
if (is_array($attrib)) {
$this->attrib = array_merge($this->attrib, $attrib);
}
// set value attribute
if ($value !== null) {
$this->attrib['value'] = $value;
}
// set type
$this->attrib['type'] = $this->type;
return parent::show();
}
}
/**
* Class to create an HTML password field
*
* @package Framework
* @subpackage View
*/
class html_passwordfield extends html_inputfield
{
protected $type = 'password';
}
/**
* Class to create an hidden HTML input field
*
* @package Framework
* @subpackage View
*/
class html_hiddenfield extends html
{
protected $tagname = 'input';
protected $type = 'hidden';
protected $fields_arr = array();
protected $allowed = array('type','name','value','onchange','disabled','readonly');
/**
* Constructor
*
* @param array $attrib Named tag attributes
*/
public function __construct($attrib = null)
{
if (is_array($attrib)) {
$this->add($attrib);
}
}
/**
* Add a hidden field to this instance
*
* @param array $attrib Named tag attributes
*/
public function add($attrib)
{
$this->fields_arr[] = $attrib;
}
/**
* Create HTML code for the hidden fields
*
* @return string Final HTML code
*/
public function show()
{
$out = '';
foreach ($this->fields_arr as $attrib) {
$out .= self::tag($this->tagname, array('type' => $this->type) + $attrib);
}
return $out;
}
}
/**
* Class to create HTML radio buttons
*
* @package Framework
* @subpackage View
*/
class html_radiobutton extends html_inputfield
{
protected $type = 'radio';
/**
* Get HTML code for this object
*
* @param string $value Value of the checked field
* @param array $attrib Additional attributes to override
* @return string HTML output
*/
public function show($value = '', $attrib = null)
{
// overwrite object attributes
if (is_array($attrib)) {
$this->attrib = array_merge($this->attrib, $attrib);
}
// set value attribute
$this->attrib['checked'] = ((string)$value == (string)$this->attrib['value']);
return parent::show();
}
}
/**
* Class to create HTML checkboxes
*
* @package Framework
* @subpackage View
*/
class html_checkbox extends html_inputfield
{
protected $type = 'checkbox';
/**
* Get HTML code for this object
*
* @param string $value Value of the checked field
* @param array $attrib Additional attributes to override
* @return string HTML output
*/
public function show($value = '', $attrib = null)
{
// overwrite object attributes
if (is_array($attrib)) {
$this->attrib = array_merge($this->attrib, $attrib);
}
// set value attribute
$this->attrib['checked'] = ((string)$value == (string)$this->attrib['value']);
return parent::show();
}
}
/**
* Class to create an HTML textarea
*
* @package Framework
* @subpackage View
*/
class html_textarea extends html
{
protected $tagname = 'textarea';
protected $allowed = array('name','rows','cols','wrap','tabindex',
'onchange','disabled','readonly','spellcheck');
/**
* Get HTML code for this object
*
* @param string $value Textbox value
* @param array $attrib Additional attributes to override
* @return string HTML output
*/
public function show($value = '', $attrib = null)
{
// overwrite object attributes
if (is_array($attrib)) {
$this->attrib = array_merge($this->attrib, $attrib);
}
// take value attribute as content
if (empty($value) && !empty($this->attrib['value'])) {
$value = $this->attrib['value'];
}
// make shure we don't print the value attribute
if (isset($this->attrib['value'])) {
unset($this->attrib['value']);
}
if (!empty($value) && empty($this->attrib['is_escaped'])) {
$value = self::quote($value);
}
return self::tag($this->tagname, $this->attrib, $value,
array_merge(self::$common_attrib, $this->allowed));
}
}
/**
* Builder for HTML drop-down menus
* Syntax:<pre>
* // create instance. arguments are used to set attributes of select-tag
* $select = new html_select(array('name' => 'fieldname'));
*
* // add one option
* $select->add('Switzerland', 'CH');
*
* // add multiple options
* $select->add(array('Switzerland','Germany'), array('CH','DE'));
*
* // generate pulldown with selection 'Switzerland' and return html-code
* // as second argument the same attributes available to instanciate can be used
* print $select->show('CH');
* </pre>
*
* @package Framework
* @subpackage View
*/
class html_select extends html
{
protected $tagname = 'select';
protected $options = array();
protected $allowed = array('name','size','tabindex','autocomplete',
'multiple','onchange','disabled','rel');
/**
* Add a new option to this drop-down
*
* @param mixed $names Option name or array with option names
* @param mixed $values Option value or array with option values
* @param array $attrib Additional attributes for the option entry
*/
public function add($names, $values = null, $attrib = array())
{
if (is_array($names)) {
foreach ($names as $i => $text) {
$this->options[] = array('text' => $text, 'value' => $values[$i]) + $attrib;
}
}
else {
$this->options[] = array('text' => $names, 'value' => $values) + $attrib;
}
}
/**
* Get HTML code for this object
*
* @param string $select Value of the selection option
* @param array $attrib Additional attributes to override
* @return string HTML output
*/
public function show($select = array(), $attrib = null)
{
// overwrite object attributes
if (is_array($attrib)) {
$this->attrib = array_merge($this->attrib, $attrib);
}
$this->content = "\n";
$select = (array)$select;
foreach ($this->options as $option) {
$attr = array(
'value' => $option['value'],
'selected' => (in_array($option['value'], $select, true) ||
in_array($option['text'], $select, true)) ? 1 : null);
$option_content = $option['text'];
if (empty($this->attrib['is_escaped'])) {
$option_content = self::quote($option_content);
}
$this->content .= self::tag('option', $attr + $option, $option_content, array('value','label','class','style','title','disabled','selected'));
}
return parent::show();
}
}
/**
* Class to build an HTML table
*
* @package Framework
* @subpackage View
*/
class html_table extends html
{
protected $tagname = 'table';
protected $allowed = array('id','class','style','width','summary',
'cellpadding','cellspacing','border');
private $header = array();
private $rows = array();
private $rowindex = 0;
private $colindex = 0;
/**
* Constructor
*
* @param array $attrib Named tag attributes
*/
public function __construct($attrib = array())
{
$default_attrib = self::$doctype == 'xhtml' ? array('summary' => '', 'border' => '0') : array();
$this->attrib = array_merge($attrib, $default_attrib);
if (!empty($attrib['tagname']) && $attrib['tagname'] != 'table') {
$this->tagname = $attrib['tagname'];
$this->allowed = self::$common_attrib;
}
}
/**
* Add a table cell
*
* @param array $attr Cell attributes
* @param string $cont Cell content
*/
public function add($attr, $cont)
{
if (is_string($attr)) {
$attr = array('class' => $attr);
}
$cell = new stdClass;
$cell->attrib = $attr;
$cell->content = $cont;
$this->rows[$this->rowindex]->cells[$this->colindex] = $cell;
$this->colindex += max(1, intval($attr['colspan']));
if ($this->attrib['cols'] && $this->colindex >= $this->attrib['cols']) {
$this->add_row();
}
}
/**
* Add a table header cell
*
* @param array $attr Cell attributes
* @param string $cont Cell content
*/
public function add_header($attr, $cont)
{
if (is_string($attr)) {
$attr = array('class' => $attr);
}
$cell = new stdClass;
$cell->attrib = $attr;
$cell->content = $cont;
$this->header[] = $cell;
}
/**
* Remove a column from a table
* Useful for plugins making alterations
*
* @param string $class
*/
public function remove_column($class)
{
// Remove the header
foreach ($this->header as $index=>$header){
if ($header->attrib['class'] == $class){
unset($this->header[$index]);
break;
}
}
// Remove cells from rows
foreach ($this->rows as $i=>$row){
foreach ($row->cells as $j=>$cell){
if ($cell->attrib['class'] == $class){
unset($this->rows[$i]->cells[$j]);
break;
}
}
}
}
/**
* Jump to next row
*
* @param array $attr Row attributes
*/
public function add_row($attr = array())
{
$this->rowindex++;
$this->colindex = 0;
$this->rows[$this->rowindex] = new stdClass;
$this->rows[$this->rowindex]->attrib = $attr;
$this->rows[$this->rowindex]->cells = array();
}
/**
* Set row attributes
*
* @param array $attr Row attributes
* @param int $index Optional row index (default current row index)
*/
public function set_row_attribs($attr = array(), $index = null)
{
if (is_string($attr)) {
$attr = array('class' => $attr);
}
if ($index === null) {
$index = $this->rowindex;
}
// make sure row object exists (#1489094)
if (!$this->rows[$index]) {
$this->rows[$index] = new stdClass;
}
$this->rows[$index]->attrib = $attr;
}
/**
* Get row attributes
*
* @param int $index Row index
*
* @return array Row attributes
*/
public function get_row_attribs($index = null)
{
if ($index === null) {
$index = $this->rowindex;
}
return $this->rows[$index] ? $this->rows[$index]->attrib : null;
}
/**
* Build HTML output of the table data
*
* @param array $attrib Table attributes
* @return string The final table HTML code
*/
public function show($attrib = null)
{
if (is_array($attrib)) {
$this->attrib = array_merge($this->attrib, $attrib);
}
$thead = $tbody = "";
// include <thead>
if (!empty($this->header)) {
$rowcontent = '';
foreach ($this->header as $c => $col) {
$rowcontent .= self::tag($this->_head_tagname(), $col->attrib, $col->content);
}
$thead = $this->tagname == 'table' ? self::tag('thead', null, self::tag('tr', null, $rowcontent, parent::$common_attrib)) :
self::tag($this->_row_tagname(), array('class' => 'thead'), $rowcontent, parent::$common_attrib);
}
foreach ($this->rows as $r => $row) {
$rowcontent = '';
foreach ($row->cells as $c => $col) {
$rowcontent .= self::tag($this->_col_tagname(), $col->attrib, $col->content);
}
if ($r < $this->rowindex || count($row->cells)) {
$tbody .= self::tag($this->_row_tagname(), $row->attrib, $rowcontent, parent::$common_attrib);
}
}
if ($this->attrib['rowsonly']) {
return $tbody;
}
// add <tbody>
$this->content = $thead . ($this->tagname == 'table' ? self::tag('tbody', null, $tbody) : $tbody);
unset($this->attrib['cols'], $this->attrib['rowsonly']);
return parent::show();
}
/**
* Count number of rows
*
* @return The number of rows
*/
public function size()
{
return count($this->rows);
}
/**
* Remove table body (all rows)
*/
public function remove_body()
{
$this->rows = array();
$this->rowindex = 0;
}
/**
* Getter for the corresponding tag name for table row elements
*/
private function _row_tagname()
{
static $row_tagnames = array('table' => 'tr', 'ul' => 'li', '*' => 'div');
return $row_tagnames[$this->tagname] ?: $row_tagnames['*'];
}
/**
* Getter for the corresponding tag name for table row elements
*/
private function _head_tagname()
{
static $head_tagnames = array('table' => 'th', '*' => 'span');
return $head_tagnames[$this->tagname] ?: $head_tagnames['*'];
}
/**
* Getter for the corresponding tag name for table cell elements
*/
private function _col_tagname()
{
static $col_tagnames = array('table' => 'td', '*' => 'span');
return $col_tagnames[$this->tagname] ?: $col_tagnames['*'];
}
}
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