<?php

/*
 +--------------------------------------------------------------------+
 | CiviCRM version 3.0                                                |
 +--------------------------------------------------------------------+
 | Copyright U.S. PIRG Education Fund (c) 2007                        |
 +--------------------------------------------------------------------+
 | This file is a part of CiviCRM.                                    |
 |                                                                    |
 | CiviCRM is free software; you can copy, modify, and distribute it  |
 | under the terms of the GNU Affero General Public License           |
 | Version 3, 19 November 2007.                                       |
 |                                                                    |
 | CiviCRM is distributed in the hope that it will be useful, but     |
 | WITHOUT ANY WARRANTY; without even the implied warranty of         |
 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.               |
 | See the GNU Affero General Public License for more details.        |
 |                                                                    |
 | You should have received a copy of the GNU Affero General Public   |
 | License along with this program; if not, contact CiviCRM LLC       |
 | at info[AT]civicrm[DOT]org. If you have questions about the        |
 | GNU Affero General Public License or the licensing of CiviCRM,     |
 | see the CiviCRM license FAQ at http://civicrm.org/licensing        |
 +--------------------------------------------------------------------+
*/

/**
 *
 * @package CRM
 * @copyright U.S. PIRG Education Fund 2007
 * $Id$
 *
 */
 
require_once 'CRM/Core/QuickForm/NestedAdvMultiSelect.php';
 
class CRM_Core_QuickForm_GroupMultiSelect extends CRM_Core_QuickForm_NestedAdvMultiSelect {
    
    function toHtml( ) {
        if ($this->_flagFrozen) {
            return $this->getFrozenHtml();
        }

        $tabs    = $this->_getTabs();
        $tab     = $this->_getTab();
        $strHtml = '';

        if ($this->getComment() != '') {
            $strHtml .= $tabs . '<!-- ' . $this->getComment() . " //-->" . PHP_EOL;
        }

        $selectName = $this->getName() . '[]';

        // placeholder {unselected} existence determines if we will render
        if (strpos($this->_elementTemplate, '{unselected}') === false) {
            // ... a single multi-select with checkboxes

            $id = $this->getAttribute('id');

            $strHtmlSelected = $tab . '<div id="'.$id.'amsSelected">'  . PHP_EOL;

            foreach ($this->_options as $option) {

                $_labelAttributes  = array('style', 'class', 'onmouseover', 'onmouseout');
                $labelAttributes = array();
                foreach ($_labelAttributes as $attr) {
                    if (isset($option['attr'][$attr])) {
                        $labelAttributes[$attr] = $option['attr'][$attr];
                        unset($option['attr'][$attr]);
                    }
                }

                if (is_array($this->_values) && in_array((string)$option['attr']['value'], $this->_values)) {
                    // The items is *selected*
                    $checked = ' checked="checked"';
                } else {
                    // The item is *unselected* so we want to put it
                    $checked = '';
                }
                $strHtmlSelected .= $tab
                                 .  '<label'
                                 .  $this->_getAttrString($labelAttributes) .'>'
                                 .  '<input type="checkbox"'
                                 .  ' id="'.$this->getName().'"'
                                 .  ' name="'.$selectName.'"'
                                 .  $checked
                                 .  $this->_getAttrString($option['attr'])
                                 .  ' />' .  $option['text'] . '</label>'
                                 .  PHP_EOL;
            }
            $strHtmlSelected    .= $tab . '</div>'. PHP_EOL;

            $strHtmlHidden = '';
            $strHtmlUnselected = '';
            $strHtmlAdd = '';
            $strHtmlRemove = '';

            // build the select all button with all its attributes
            $attributes = array('onclick' => "{$this->_jsPrefix}{$this->_jsPostfix}('". $this->getName() ."', 1);");
            $this->_allButtonAttributes = array_merge($this->_allButtonAttributes, $attributes);
            $attrStrAll = $this->_getAttrString($this->_allButtonAttributes);
            $strHtmlAll = "<input$attrStrAll />". PHP_EOL;

            // build the select none button with all its attributes
            $attributes = array('onclick' => "{$this->_jsPrefix}{$this->_jsPostfix}('". $this->getName() ."', 0);");
            $this->_noneButtonAttributes = array_merge($this->_noneButtonAttributes, $attributes);
            $attrStrNone = $this->_getAttrString($this->_noneButtonAttributes);
            $strHtmlNone = "<input$attrStrNone />". PHP_EOL;

            // build the toggle selection button with all its attributes
            $attributes = array('onclick' => "{$this->_jsPrefix}{$this->_jsPostfix}('". $this->getName() ."', 2);");
            $this->_toggleButtonAttributes = array_merge($this->_toggleButtonAttributes, $attributes);
            $attrStrToggle = $this->_getAttrString($this->_toggleButtonAttributes);
            $strHtmlToggle = "<input$attrStrToggle />". PHP_EOL;

            $strHtmlMoveUp = '';
            $strHtmlMoveDown = '';

        } else {
            // ... or a dual multi-select

            // set name of Select From Box
            $this->_attributesUnselected = array('name' => '__'.$selectName, 'ondblclick' => "{$this->_jsPrefix}{$this->_jsPostfix}(this.form.elements['__" . $selectName . "'], this.form.elements['_" . $selectName . "'], this.form.elements['" . $selectName . "'], 'add')");
            $this->_attributesUnselected = array_merge($this->_attributes, $this->_attributesUnselected);
            $attrUnselected = $this->_getAttrString($this->_attributesUnselected);

            // set name of Select To Box
            $this->_attributesSelected = array('name' => '_'.$selectName, 'ondblclick' => "{$this->_jsPrefix}{$this->_jsPostfix}(this.form.elements['__" . $selectName . "'], this.form.elements['_" . $selectName . "'], this.form.elements['" . $selectName . "'], 'remove')");
            $this->_attributesSelected = array_merge($this->_attributes, $this->_attributesSelected);
            $attrSelected = $this->_getAttrString($this->_attributesSelected);

            // set name of Select hidden Box
            $this->_attributesHidden = array('name' => $selectName, 'style' => 'overflow: hidden; visibility: hidden; width: 1px; height: 0;');
            $this->_attributesHidden = array_merge($this->_attributes, $this->_attributesHidden);
            $attrHidden = $this->_getAttrString($this->_attributesHidden);

            // prepare option tables to be displayed as in POST order
            $append = count($this->_values);
            if ($append > 0) {
                $arrHtmlSelected = array_fill(0, $append, ' ');
            } else {
                $arrHtmlSelected = array();
            }

            $options = count($this->_options);
            $arrHtmlUnselected = array();
            if ($options > 0) {
                $arrHtmlHidden = array_fill(0, $options, ' ');

                foreach ($this->_options as $option) {
                    if (is_array($this->_values) &&
                        in_array((string)$option['attr']['value'], $this->_values)) {
                        // Get the post order
                        $key = array_search($option['attr']['value'], $this->_values);

                        // The items is *selected* so we want to put it in the 'selected' multi-select
                        $arrHtmlSelected[$key] = $option;
                        // Add it to the 'hidden' multi-select and set it as 'selected'
                        $option['attr']['selected'] = 'selected';
                        $arrHtmlHidden[$key] = $option;
                    } else {
                        // The item is *unselected* so we want to put it in the 'unselected' multi-select
                        $arrHtmlUnselected[] = $option;
                        // Add it to the hidden multi-select as 'unselected'
                        $arrHtmlHidden[$append] = $option;
                        $append++;
                    }
                }
            } else {
                $arrHtmlHidden = array();
            }

            // The 'unselected' multi-select which appears on the left
            $strHtmlUnselected = "<select$attrUnselected>". PHP_EOL;
            if (count($arrHtmlUnselected) > 0) {
                foreach ($arrHtmlUnselected as $data) {
                    $strHtmlUnselected .= $tabs . $tab
                                       . '<option' . $this->_getAttrString($data['attr']) . '>'
                                       . $data['text'] . '</option>' . PHP_EOL;
                }
            }
            $strHtmlUnselected .= '</select>';

            // The 'selected' multi-select which appears on the right
            $strHtmlSelected = "<select$attrSelected>". PHP_EOL;
            if (count($arrHtmlSelected) > 0) {
                foreach ($arrHtmlSelected as $data) {
                    $strHtmlSelected .= $tabs . $tab
                                     . '<option' . $this->_getAttrString($data['attr']) . '>'
                                     . $data['text'] . '</option>' . PHP_EOL;
                }
            }
            $strHtmlSelected .= '</select>';

            // The 'hidden' multi-select
            $strHtmlHidden = "<select$attrHidden>". PHP_EOL;
            if (count($arrHtmlHidden) > 0) {
                foreach ($arrHtmlHidden as $data) {
                    $strHtmlHidden .= $tabs . $tab
                                   . '<option' . $this->_getAttrString($data['attr']) . '>'
                                   . $data['text'] . '</option>' . PHP_EOL;
                }
            }
            $strHtmlHidden .= '</select>';

            // build the remove button with all its attributes
            $attributes = array('onclick' => "{$this->_jsPrefix}{$this->_jsPostfix}(this.form.elements['__" . $selectName . "'], this.form.elements['_" . $selectName . "'], this.form.elements['" . $selectName . "'], 'remove'); return false;");
            $this->_removeButtonAttributes = array_merge($this->_removeButtonAttributes, $attributes);
            $attrStrRemove = $this->_getAttrString($this->_removeButtonAttributes);
            $strHtmlRemove = "<input$attrStrRemove />". PHP_EOL;

            // build the add button with all its attributes
            $attributes = array('onclick' => "{$this->_jsPrefix}{$this->_jsPostfix}(this.form.elements['__" . $selectName . "'], this.form.elements['_" . $selectName . "'], this.form.elements['" . $selectName . "'], 'add'); return false;");
            $this->_addButtonAttributes = array_merge($this->_addButtonAttributes, $attributes);
            $attrStrAdd = $this->_getAttrString($this->_addButtonAttributes);
            $strHtmlAdd = "<input$attrStrAdd />". PHP_EOL;

            // build the select all button with all its attributes
            $attributes = array('onclick' => "{$this->_jsPrefix}{$this->_jsPostfix}(this.form.elements['__" . $selectName . "'], this.form.elements['_" . $selectName . "'], this.form.elements['" . $selectName . "'], 'all'); return false;");
            $this->_allButtonAttributes = array_merge($this->_allButtonAttributes, $attributes);
            $attrStrAll = $this->_getAttrString($this->_allButtonAttributes);
            $strHtmlAll = "<input$attrStrAll />". PHP_EOL;

            // build the select none button with all its attributes
            $attributes = array('onclick' => "{$this->_jsPrefix}{$this->_jsPostfix}(this.form.elements['__" . $selectName . "'], this.form.elements['_" . $selectName . "'], this.form.elements['" . $selectName . "'], 'none'); return false;");
            $this->_noneButtonAttributes = array_merge($this->_noneButtonAttributes, $attributes);
            $attrStrNone = $this->_getAttrString($this->_noneButtonAttributes);
            $strHtmlNone = "<input$attrStrNone />". PHP_EOL;

            // build the toggle button with all its attributes
            $attributes = array('onclick' => "{$this->_jsPrefix}{$this->_jsPostfix}(this.form.elements['__" . $selectName . "'], this.form.elements['_" . $selectName . "'], this.form.elements['" . $selectName . "'], 'toggle'); return false;");
            $this->_toggleButtonAttributes = array_merge($this->_toggleButtonAttributes, $attributes);
            $attrStrToggle = $this->_getAttrString($this->_toggleButtonAttributes);
            $strHtmlToggle = "<input$attrStrToggle />". PHP_EOL;

            // build the move up button with all its attributes
            $attributes = array('onclick' => "{$this->_jsPrefix}moveUp(this.form.elements['_" . $selectName . "'], this.form.elements['" . $selectName . "']); return false;");
            $this->_upButtonAttributes = array_merge($this->_upButtonAttributes, $attributes);
            $attrStrUp = $this->_getAttrString($this->_upButtonAttributes);
            $strHtmlMoveUp = "<input$attrStrUp />". PHP_EOL;

            // build the move down button with all its attributes
            $attributes = array('onclick' => "{$this->_jsPrefix}moveDown(this.form.elements['_" . $selectName . "'], this.form.elements['" . $selectName . "']); return false;");
            $this->_downButtonAttributes = array_merge($this->_downButtonAttributes, $attributes);
            $attrStrDown = $this->_getAttrString($this->_downButtonAttributes);
            $strHtmlMoveDown = "<input$attrStrDown />". PHP_EOL;
        }

        // render all part of the multi select component with the template
        $strHtml = $this->_elementTemplate;

        // Prepare multiple labels
        $labels = $this->getLabel();
        if (is_array($labels)) {
            array_shift($labels);
        }
        // render extra labels, if any
        if (is_array($labels)) {
            foreach($labels as $key => $text) {
                $key  = is_int($key)? $key + 2: $key;
                $strHtml = str_replace("{label_{$key}}", $text, $strHtml);
                $strHtml = str_replace("<!-- BEGIN label_{$key} -->", '', $strHtml);
                $strHtml = str_replace("<!-- END label_{$key} -->", '', $strHtml);
            }
        }
        // clean up useless label tags
        if (strpos($strHtml, '{label_')) {
            $strHtml = preg_replace('/\s*<!-- BEGIN label_(\S+) -->.*<!-- END label_\1 -->\s*/i', '', $strHtml);
        }

        $placeHolders = array(
            '{stylesheet}', '{javascript}', '{class}',
            '{unselected}', '{selected}',
            '{add}', '{remove}',
            '{all}', '{none}', '{toggle}',
            '{moveup}', '{movedown}'
        );
        $htmlElements = array(
            $this->getElementCss(false), $this->getElementJs(false), $this->_tableAttributes,
            $strHtmlUnselected, $strHtmlSelected . $strHtmlHidden,
            $strHtmlAdd, $strHtmlRemove,
            $strHtmlAll, $strHtmlNone, $strHtmlToggle,
            $strHtmlMoveUp, $strHtmlMoveDown
        );

        $strHtml = str_replace($placeHolders, $htmlElements, $strHtml);

        return $strHtml;
    }
    
}