moodle/lib/form/filepicker.php

<?php
// $Id$

require_once("HTML/QuickForm/button.php");
require_once(dirname(dirname(dirname(__FILE__))) . '/repository/lib.php');

/**
 * HTML class for a single filepicker element (based on button)
 *
 * @author       Moodle.com
 * @version      1.0
 * @since        Moodle 2.0
 * @access       public
 */
class MoodleQuickForm_filepicker extends HTML_QuickForm_button {
    var $_helpbutton='';

    function MoodleQuickForm_filepicker($elementName=null, $value=null, $attributes=null) {
        HTML_QuickForm_input::HTML_QuickForm_input($elementName, $value, $attributes); // Set label cause button doesn't
        parent::HTML_QuickForm_button($elementName, $value, $attributes);
    }

    function setHelpButton($helpbuttonargs, $function='helpbutton'){
        if (!is_array($helpbuttonargs)){
            $helpbuttonargs=array($helpbuttonargs);
        }else{
            $helpbuttonargs=$helpbuttonargs;
        }
        //we do this to to return html instead of printing it
        //without having to specify it in every call to make a button.
        if ('helpbutton' == $function){
            $defaultargs=array('', '', 'moodle', true, false, '', true);
            $helpbuttonargs=$helpbuttonargs + $defaultargs ;
        }
        $this->_helpbutton=call_user_func_array($function, $helpbuttonargs);
    }

    function getHelpButton(){
        return $this->_helpbutton;
    }

    function getElementTemplateType(){
        if ($this->_flagFrozen){
            return 'nodisplay';
        } else {
            return 'default';
        }
    }

    function toHtml() {
        global $CFG, $COURSE;
        if ($this->_flagFrozen) {
            return $this->getFrozenHtml();
        } else {
            $currentvalue = $this->getValue();

            $strsaved = get_string('filesaved', 'repository');
            if (empty($COURSE->context)) {
                $context = get_context_instance(CONTEXT_SYSTEM);
            } else {
                $context = $COURSE->context;
            }
            $repository_info = repository_get_client($context);
            $suffix = $repository_info['suffix'];

            $id     = $this->_attributes['id'];
            $elname = $this->_attributes['name'];

            $str = $this->_getTabs();
            $str .= '<input type="hidden" value="'.$currentvalue.'" name="'.$this->_attributes['name'].'" id="'.$this->_attributes['id'].'_'.$suffix.'" />';
            $id = $this->_attributes['id'];

            $str .= <<<EOD
<script type="text/javascript">
function updatefile_$suffix(str){
    document.getElementById('repo_info_$suffix').innerHTML = str;
}
function callpicker_$suffix(){
    document.body.className += ' yui-skin-sam';
    var picker = document.createElement('DIV');
    picker.id = 'file-picker-$suffix';
    picker.className = "file-picker";
    document.body.appendChild(picker);
    var el=document.getElementById('${id}_${suffix}');
    openpicker_$suffix({"env":"form", 'target':el, 'callback':updatefile_$suffix})
}
</script>
EOD;
            $str .= '<input value ="'.get_string('openpicker', 'repository').'" type="button" onclick=\'callpicker_'.$suffix.'()\' />'.'<span id="repo_info_'.$suffix.'" class="notifysuccess">'.$currentvalue.'</span>'.$repository_info['css'].$repository_info['js'];
            return $str;
        }
    }

    function exportValue(&$submitValues, $assoc = false) {
        return array($this->_attributes['name'] => $submitValues[$this->_attributes['name']]);
    }
}