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<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
/**
 * Widget Plugin 
 * 
 * Install this file as application/plugins/widget_pi.php
 * 
 * @version:     0.21
 * $copyright     Copyright (c) Wiredesignz 2009-09-07
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
class Widget
{
    public $module_path;
    
    function run($file) {        
        $args = func_get_args();
        
        $module = '';
        
        /* is module in filename? */
        if (($pos = strrpos($file, '/')) !== FALSE) {
            $module = substr($file, 0, $pos);
            $file = substr($file, $pos + 1);
        }

        list($path, $file) = Modules::find($file, $module, 'widgets/');
    
        if ($path === FALSE) {
            $path = APPPATH.'widgets/';
        }
            
        Modules::load_file($file, $path);
                
        $file = ucfirst($file);
        $widget = new $file();
        
        $widget->module_path = $path;
            
        return call_user_func_array(array($widget, 'run'), array_slice($args, 1));    
    }
    
    function render($view, $data = array()) {
        extract($data);
        include $this->module_path.'views/'.$view.EXT;
    }

    function load($object) {
        $this->$object = load_class(ucfirst($object));
    }

    function __get($var) {
        global $CI;
        return $CI->$var;
    }
}

## Lib
class Widget
{
    function __construct()
    {
                $this->ci = & get_instance();
        log_message('debug', 'Widget Library: Initialized');
    }

    function login()
    {
        //do_something
        return $this->ci->load->view('widget/login_view', $data, TRUE);
    }
}


## Controller
class Home extends Controller {
    
        function index()
        {
             $data->login_box = $this->widget->login();// example to view etc…
             $this->load->view('home/index_view', $data);
        }
}

## View
<div id="login_box"><?php echo $login_box ?></div>

## Or just in view (for brave men)
<div id="login_box"><?php echo $this->widget->login(); ?></div>

class Home extends Controller {
    
        function index()
        {
             $data->login_box = $this->load->view('widget/login_view', $data, TRUE);
             $this->load->view('home/index_view', $data);
        }
}

<div><?=$row->article?></div>

<? Widget::run('your_widget',$row->article);?>

class you_widget extends widget{
  function run($article){
   do what you want with article
 }
}

function output($view, $data = array())
{
    ob_start();
    $this->render($view, $data);
    $return = ob_get_contents();
    ob_end_clean();
    return $return;
}

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Topmenu extends Widget
{
    function run()
    {
        $query = $this->db->select('id, name, uri')->from('menu')->where('show_top', TRUE)->get();


        if ($query->num_rows() > 0)
        {
            $data['links'] = $query->result();

            $return = $this->output('topmenu', $data);
            return $return;
        }
    }
}

/* File : widgets/comment_form.php */
class Comment_form extends widget
{
   function run()
   {
       $captcha_config = $this->config->item('captcha', 'form');
       $this->load->plugin('captcha');
       $captcha = create_captcha($captcha_config);
       $this->session->set_flashdata('captcha_word', $captcha['word']);
       $this->session->set_flashdata('captcha_time', $captcha['time']);
       $this->render('form_captcha', $captcha);
   }       
}
/* File : widgets/views/form_captcha.php */
<?php
    echo form_open('comments_handle/create');
    echo form_label('Name');
    echo form_input('name');
    echo form_label('Email');
    echo form_input('email');
    echo form_textarea('body');
    echo $image;
    echo form_input('captcha');
    echo form_submit('OK');
    echo form_close();
?>
/* File : controllers/comments_handle.php */
...
function _valid_captcha($code = FALSE)
    {
        if ($code == FALSE) $code = $this->input->post('captcha', TRUE);
        $config = $this->config->item('captcha', 'form');
        $time = $this->session->userdata('captcha_time');
        $word = $this->session->userdata('captcha_word');
        list($usec, $sec) = explode(" ", microtime());
        $now = ((float)$usec + (float)$sec);
        if ($now - $time > $config['expiration']) {
            log_message("debug", "Validation for Captcha expired. Now is $now and Time is $time.");
            return FALSE;
        }
        if ($code != $word) {
            log_message("debug", "Validation for Captcha differs.");
            return FALSE;
        }
        return TRUE;
    }