<?php
/**
 * @package     Joomla.Platform
 * @subpackage  Form
 *
 * @copyright   Copyright (C) 2005 - 2011 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE
 */

defined('JPATH_PLATFORM') or die;

jimport('joomla.form.formfield');

/**
 * Form Field class for the Joomla Framework.
 *
 * @package     Joomla.Platform
 * @subpackage  Form
 * @since       11.1
 */
class JFormFieldMedia extends JFormField
{
    /**
     * The form field type.
     *
     * @var     string
     * @since   11.1
     */
    protected $type = 'Media';

    /**
     * The initialised state of the document object.
     *
     * @var     boolean
     * @since   11.1
     */
    protected static $initialised = false;

    /**
     * Method to get the field input markup.
     *
     * @return  string  The field input markup.
     * @since   11.1
     */
    protected function getInput()
    {
        $assetField = $this->element['asset_field'] ? (string) $this->element['asset_field'] : 'asset_id';
        $authorField= $this->element['created_by_field'] ? (string) $this->element['created_by_field'] : 'created_by';
        $asset      = $this->form->getValue($assetField) ? $this->form->getValue($assetField) : (string) $this->element['asset_id'] ;

        $link = (string) $this->element['link'];
        if (!self::$initialised) {

            // Load the modal behavior script.
            JHtml::_('behavior.modal');

            // Build the script.
            $script = array();
            $script[] = '   function jInsertFieldValue(value,id) {';
            $script[] = '       var old_id = document.getElementById(id).value;';
            $script[] = '       if (old_id != id) {';
            $script[] = '           document.getElementById(id).value = value;';
            $script[] = '       }';
            $script[] = '   }';

            // Add the script to the document head.
            JFactory::getDocument()->addScriptDeclaration(implode("\n", $script));

            self::$initialised = true;
        }

        // Initialize variables.
        $html = array();
        $attr = '';

        // Initialize some field attributes.
        $attr .= $this->element['class'] ? ' class="'.(string) $this->element['class'].'"' : '';
        $attr .= $this->element['size'] ? ' size="'.(int) $this->element['size'].'"' : '';

        // Initialize JavaScript field attributes.
        $attr .= $this->element['onchange'] ? ' onchange="'.(string) $this->element['onchange'].'"' : '';

        // The text field.
        $html[] = '<div class="fltlft">';
        $html[] = ' <input type="text" name="'.$this->name.'" id="'.$this->id.'"' .
                    ' value="'.htmlspecialchars($this->value, ENT_COMPAT, 'UTF-8').'"' .
                    ' readonly="readonly"'.$attr.' />';
        $html[] = '</div>';

        $directory = (string)$this->element['directory'];
        if ($this->value && file_exists(JPATH_ROOT . '/' . $this->value)) {
            $folder = explode ('/',$this->value);
            array_shift($folder);
            array_pop($folder);
            $folder = implode('/',$folder);
        }
        elseif (file_exists(JPATH_ROOT . '/images/' . $directory)) {
            $folder = $directory;
        }
        else {
            $folder='';
        }
        // The button.
        $html[] = '<div class="button2-left">';
        $html[] = ' <div class="blank">';
        $html[] = '     <a class="modal" title="'.JText::_('JSELECT').'"' .
                    ' href="'.($this->element['readonly'] ? '' : ($link ? $link : 'index.php?option=com_media&amp;view=images&amp;tmpl=component&amp;asset='.$asset.'&amp;author='.$this->form->getValue($authorField)) . '&amp;fieldid='.$this->id.'&amp;folder='.$folder).'"' .
                    ' rel="{handler: \'iframe\', size: {x: 800, y: 500}}">';
        $html[] = '         '.JText::_('JSELECT').'</a>';
        $html[] = ' </div>';
        $html[] = '</div>';

        $html[] = '<div class="button2-left">';
        $html[] = ' <div class="blank">';
        $html[] = '     <a title="'.JText::_('JCLEAR').'"' .
                    ' href="#"'.
                    ' onclick="javascript:document.getElementById(\''.$this->id.'\').value=\'\';">';
        $html[] = '         '.JText::_('JCLEAR').'</a>';
        $html[] = ' </div>';
        $html[] = '</div>';

        return implode("\n", $html);
    }
}