class.form.php

<?php 
 /**
     * HTML FORM design pattern - Generates all HTML FORM elements
     *
     * <p>This class contains the methods for generating forms snd related elements so we do not
     * have to poison our code with HTML
     *
     * @author Peter Lorimer <peter@oslo.ie>
     * @license Interleaf
     * @copyright Interleaf Technology Ltd
     *
     * Date: 22 July 2011
     */



class HTML_Form { 
/**
* Class to implement an HTML FORM design pattern
*      
* @package HTML_Form
*/
    public static $MONTHS_LONG = array('January', 'February', 'March', 'April', 'May', 'June', 'July',  
        'August', 'September', 'October', 'November', 'December'); 
     
    public function startForm($action = '#', $method = 'post', $id = NULL, $attr_ar = array() ) { 
        $str = "<form action=\"$action\" method=\"$method\""; 
        if ( isset($id) ) { 
            $str .= " id=\"$id\""; 
        } 
        $str .= $attr_ar? $this->addAttributes( $attr_ar ) . '>': '>'; 
        return $str; 
    } 
     
    private function addAttributes( $attr_ar ) { 
        $str = ''; 
        // check minimized attributes 
        $min_atts = array('checked', 'disabled', 'readonly', 'multiple'); 
        foreach( $attr_ar as $key=>$val ) { 
            if ( in_array($key, $min_atts) ) { 
                if ( !empty($val) ) {  
                    $str .= " $key=\"$key\""; 
                } 
            } else { 
                $str .= " $key=\"$val\""; 
            } 
        } 
        return $str; 
    } 
     
    public function addInput($type, $name, $value, $attr_ar = array() ) { 
        $str = "<input type=\"$type\" name=\"$name\" value=\"$value\""; 
        if ($attr_ar) { 
            $str .= $this->addAttributes( $attr_ar ); 
        } 
        $str .= ' />'; 
        return $str; 
    } 
     
    public function addTextarea($name, $rows = 4, $cols = 30, $value = '', $attr_ar = array() ) { 
        $str = "<textarea name=\"$name\" rows=\"$rows\" cols=\"$cols\""; 
        if ($attr_ar) { 
            $str .= $this->addAttributes( $attr_ar ); 
        } 
        $str .= ">$value</textarea>"; 
        return $str; 
    } 
     
    // for attribute refers to id of associated form element 
    public function addLabelFor($forID, $text, $attr_ar = array() ) { 
        $str = "<label for=\"$forID\""; 
        if ($attr_ar) { 
            $str .= $this->addAttributes( $attr_ar ); 
        } 
        $str .= ">$text</label>"; 
        return $str; 
    } 
     
    // from parallel arrays for option values and text 
    public function addSelectListArrays($name, $val_list, $txt_list, $selected_value = NULL, $header = NULL, $attr_ar = array() ) { 
        $option_list = array_combine( $val_list, $txt_list ); 
        $str = $this->addSelectList($name, $option_list, true, $selected_value, $header, $attr_ar ); 
        return $str; 
    } 
     
    // option values and text come from one array (can be assoc) 
    // $bVal false if text serves as value (no value attr) 
    public function addSelectList($name, $option_list, $bVal = true, $selected_value = NULL, $header = NULL, $attr_ar = array() ) { 
        $str = "<select name=\"$name\""; 
        if ($attr_ar) { 
            $str .= $this->addAttributes( $attr_ar ); 
        } 
        $str .= ">\n"; 
        if ( isset($header) ) { 
            $str .= "  <option value=\"\">$header</option>\n"; 
        } 
        foreach ( $option_list as $val => $text ) { 
            $str .= $bVal? "  <option value=\"$val\"": "  <option"; 
            if ( isset($selected_value) && ( $selected_value === $val || $selected_value === $text) ) { 
                $str .= ' selected="selected"'; 
            } 
            $str .= ">$text</option>\n"; 
        } 
        $str .= "</select>"; 
        return $str; 
    } 
     
    public function endForm() { 
        return "</form>"; 
    } 
     
} 



?>