355 lines
9.5 KiB
PHP
355 lines
9.5 KiB
PHP
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<?php
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/**
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* HTML-Klasse
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*
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* @package federleicht
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* @subpacke helper
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* @version 0.3
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*/
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class html {
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protected $data = array();
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protected $eol = PHP_EOL;
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protected $output_xhtml = true;
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/**
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* Konstruktor
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*
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* @todo Information ueber Einrueckung oder ein Ausgabe-Objekt uebergeben?
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* @todo Datenobjekt direkt statt der Referenz auf den View uebergeben.
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* @param view &$view
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* @param boolean $eol
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* @param boolean $output_xhtml
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*/
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public function __construct(&$view = null, $eol=true, $output_xhtml=true) {
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if ( $view instanceof view ) {
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$this->set_data( $view->get_data_object() );
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}
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$this->eol = ( $eol )? PHP_EOL: '';
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$this->output_xhtml = (boolean) $output_xhtml;
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}
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/**
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* Datenquelle setzen
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*
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* @param mixed $data
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*/
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public function set_data($data) {
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$this->data = $data;
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}
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/**
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* HTML ausgeben
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*
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* @param string $html
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*/
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protected function output($html) {
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if ( $this->output_xhtml === false ) {
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$html = str_replace(' />', '>', $html);
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}
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echo $html . $this->eol;
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}
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/**
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* Formulartag erzeugen
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*
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* @param string $action
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* @param string $id
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* @param string $target
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* @param string $method
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* @param string $charset
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*/
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public function form_tag($action, $id='', $target='', $method='post', $charset='UTF-8') {
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$action = ( $action[0] == '/' )? $action: '/'.$action;
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$id = ( $id != '' )? ' id="'.$id.'" name="'.$id.'" ': '';
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$target = ( $target != '' )? ' target="'.$target.'" ': '';
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$html = '<form action="'.$action.'" method="'.$method.'" '. $id . $target .'accept-charset="'.$charset.'">';
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$this->output($html);
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}
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/**
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* Formulartag schließen
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*/
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public function form_end() {
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$html = '</form>';
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$this->output($html);
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}
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/**
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* Dropdown erzeugen
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*
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* Es wird ein HTML-Dropdown erzeugt. Die einzelnen Dropdownelemente werden
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* als kommaseparierte Liste in folgendem Format übergeben:
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* 1=eins,2=zwei,3=drei
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*
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* Dies führt zu einem Dropdown mit drei Elementen. Es wird der Text nach dem
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* Gleichheitszeichen zur Darstellung verwendet, hier also
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* 'eins', 'zwei', 'drei'.
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* Die übergebenen Werte sind dabei der Text vor dem Gleichheitszeichen:
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* 1, 2, 3.
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*
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* Das Dropdown hat die ID, die im ersten Parameter übergeben wird und
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* verwendet diesen auch zur Datenübergabe als Array-Schlüssel.
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*
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* Wenn bereits Daten geladen wurden, wird versucht, den entsprechenden
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* Wert als vorausgewählt darzustellen.
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*
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* Das HTML wird ausgegeben.
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*
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* @param string $field Eindeutiger Bezeichner für das Datenfeld.
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* @param string $options Dropdownelemente im Format value=description, kommasepariert
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* @param string $label Beschriftung des Dropdowns
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*/
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public function get_dropdown($field, $options, $label='') {
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if ( is_string($options) ) {
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$options = $this->string_to_array($options);
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}
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$html = '';
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if ( $label != '') $html .= $this->get_label($field, $label);
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$html .= '<select name="fl['.$field.']" id="'.$field.'" size="1" class="dropdown">'."\n";
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foreach( $options as $option ) {
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$id = $this->get_value('id', $option);
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$name = $this->get_value('name', $option);
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$selected = ( $this->get_value($field, $this->data) == $id )? ' selected="selected"': '';
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$html .= "\t<option value=\"".$id.'"'.$selected.'>'.$name."</option>\n";
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}
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$html .= '</select>';
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$this->output($html);
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}
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/**
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* Dropdown-String zu Array machen
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*
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* @param string $string
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* @return array
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*/
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protected function string_to_array($string) {
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$array = array();
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foreach( explode(',', $string) as $keyvaluepair ) {
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if ( strpos( $keyvaluepair, '=' ) === false ) {
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$id = $name = $keyvaluepair;
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} else {
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list($id, $name) = explode('=', $keyvaluepair, 2);
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}
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$array[] = array(
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'id'=>$id,
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'name'=>$name
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);
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}
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return $array;
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}
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/**
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* Dropdown-Array zu String machen
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*
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* @param array $data
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* @return string
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*/
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protected function array_to_string($data) {
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foreach( $data as $value) {
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$string[] = $value['id'].'='.$value['name'];
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}
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$string = implode(',', $string);
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return $string;
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}
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/**
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* Radiobuttons ausgeben
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*
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* Radiobuttons werden direkt ausgegeben.
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* Wrapperfunktion für echo html::return_radios()
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*/
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public function get_radios($field, $options, $tag='p') {
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$html = $this->return_radios($field, $options, $tag);
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$this->output($html);
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}
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/**
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* Radiobuttons erzeugen
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*
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* @todo Dokumentation erstellen
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*/
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public function return_radios($field, $options, $tag='p') {
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$options = explode(',', $options);
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$html = '';
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foreach( $options as $option ) {
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$option = explode('=', $option);
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$option[1] = ( isset($option[1]) )? $option[1]: $option[0];
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$value = $this->get_value('1', $option);
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$selected = ( $this->get_value($field, $this->data) == $option[0] )? ' checked="checked"': '';
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$html .= "\n\t\t\t".'<'.$tag.'><input name="fl['.$field.']" id="'.$field.'-'.$option[0].'" type="radio" class="radio" value="'.$option[0].'"'.$selected.' />' .$this->get_label($field.'-'.$option[0], $value) . '</'.$tag.'>';
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}
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return $html;
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}
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/**
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* Inputfeld erzeugen
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*
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* Das erzeugte HTML wird direkt ausgegeben.
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*
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* @param string $field ID des Formularfelds
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* @param string $label zu verwendendes Label
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* @param array $options Optionen als assoziatives Array:
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* - type: von text abweichender Typ
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* - size: Länge (inkl. Maximallänge) einstellen
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*/
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public function get_input($field, $label='', $options=array() ) {
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if ( !empty($options) ) {
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$type = ( isset($options['type']) AND !empty($options['type']) )?
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'type="'.$options['type'].'"':
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'type="text"';
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$options = ( isset($options['size']) AND !empty($options['size']) )?
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'maxlength="'.$options['size'].'" size="'.$options['size'].'" ':
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'';
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} else {
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$type = 'type="text"';
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$options = '';
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}
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$html = '';
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if ( $label != '' AND !is_numeric($label) ) {
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$html .= $this->get_label($field, $label);
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}
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$name = ( $type == 'type="file"' )?
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$field:
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'fl['.$field.']';
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$value = $this->get_value($field, $this->data);
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$html .= '<input name="'.$name.'" id="'.$field.'" class="text" '.$type.' '.$options.'value="'.$value.'" />';
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$this->output($html);
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}
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/**
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* Verstecktes Inputfeld erzeugen
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*
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* @param string $field
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* @param string $value
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*/
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public function get_hidden($field, $value) {
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$html = '<input name="fl['.$field.']" id="'.$field.'" type="hidden" value="'.$value.'" />';
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$this->output($html);
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}
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/**
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* Button erzeugen
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*
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* @param string $name ID und name des Buttons
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* @param string $label optional: Beschriftung
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* @param string $type optional: von "submit" abweichender Typ
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*/
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public function get_button($name, $label='', $type='submit') {
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$label = ( $label === '' )? $name: $label;
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$html = '<input id="'.$name.'" type="'.$type.'" value="'.$label.'" />';
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$this->output($html);
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}
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/**
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* Checkbox erzeugen
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*
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* @param string $field ID des Formularfelds
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* @param string $label zu verwendendes Label
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* @return string
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*/
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public function get_checkbox($field, $label='') {
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$html = '';
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$data = $this->get_value($field, $this->data);
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$checked = ( $data == $field OR $data == 1 )?
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' checked="checked"':
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'';
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$html .= '<input name="fl['.$field.']" id="'.$field.'" class="checkbox" type="checkbox" value="'.$field.'"'.$checked .' /> ';
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if ( $label != '' AND !is_numeric($label) ) {
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$html .= '<label for="'.$field.'" class="checkbox">'.$label.'</label>';
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}
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$this->output($html);
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}
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/**
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* Textarea erzeugen
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*
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* Es wird ein mehrzeiliges Eingabefeld erzeugt.
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*
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* @param string $field
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* @param string $label
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* @param array $options Hash mit Optionen:
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* - rows: Anzahl der Zeilen
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* - cols: Anzahl der Spalten
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*/
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public function get_textarea($field, $label='', $options = array() ) {
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$html = '';
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$rows = ( isset($options['rows']) AND !empty($options['rows']) )? $options['rows']: 5;
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$cols = ( isset($options['cols']) AND !empty($options['cols']) )? $options['cols']: 30;
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$value = $this->get_value($field, $this->data);
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if ( $label != '' ) $html .= $this->get_label($field, $label);
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$html .= '<textarea name="fl['.$field.']" id="'.$field.'" rows="'.$rows.'" cols="'.$cols.'">'.$value.'</textarea>';
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$this->output($html);
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}
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/**
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* Formularvorgabewert oder -beschriftung holen
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*
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* @param string $field
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* @param mixed $source
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* @param string $default
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* @return string
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*/
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protected function get_value($field, $source, $default = '') {
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if ( $source instanceof view_data ) {
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$source->set_raw_output(false);
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$source->set_default($default);
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$value = $source->get($field, 'string');
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$source->set_default('');
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return $value;
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} elseif ( $source instanceof data_wrapper ) {
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return $source->is_set($field) ? $source->get($field): $default;
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}
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if ( !is_array($source) AND !($source instanceof ArrayAccess) ) {
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$source = (array) $source;
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}
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return isset($source[$field]) ? $source[$field]: $default;
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}
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/**
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* Label erzeugen
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*
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* @param string $id
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* @param string @value
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* @return string
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*/
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public function get_label( $id, $value ) {
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$label = '<label for="'.$id.'">'.$value.'</label>';
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return $label;
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}
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}
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