source: plugins/widgets/class.widgets.php @ 2662:87748fd865ef

<?php
# -- BEGIN LICENSE BLOCK ---------------------------------------
#
# This file is part of Dotclear 2.
#
# Copyright (c) 2003-2013 Olivier Meunier & Association Dotclear
# Licensed under the GPL version 2.0 license.
# See LICENSE file or
# http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
#
# -- END LICENSE BLOCK -----------------------------------------
if (!defined('DC_RC_PATH')) { return; }

class dcWidgets
{
     private $__widgets = array();

     public static function load($s)
     {
          $o = @unserialize(base64_decode($s));

          if ($o instanceof self) {
               return $o;
          } else {
               return self::loadArray($o,$GLOBALS['__widgets']);
          }
     }

     public function store()
     {
          $serialized = array();
          foreach ($this->__widgets as $pos=>$w) {
               $serialized[]=($w->serialize($pos));
          }
          return base64_encode(serialize($serialized));
     }

     public function create($id,$name,$callback,$append_callback=null,$desc='')
     {
          $this->__widgets[$id] = new dcWidget($id,$name,$callback,$desc);
          $this->__widgets[$id]->append_callback = $append_callback;
     }

     public function append($widget)
     {
          if ($widget instanceof dcWidget) {
               if (is_callable($widget->append_callback)) {
                    call_user_func($widget->append_callback,$widget);
               }
               $this->__widgets[] = $widget;
          }
     }

     public function isEmpty()
     {
          return count($this->__widgets) == 0;
     }

     public function elements($sorted=false)
     {
          if ($sorted) {
               uasort($this->__widgets,array('self','sort'));
          }
          return $this->__widgets;
     }

     public function __get($id)
     {
          if (!isset($this->__widgets[$id])) {
               return null;
          }
          return $this->__widgets[$id];
     }

     public function __wakeup()
     {
          foreach ($this->__widgets as $i => $w)
          {
               if (!($w instanceof dcWidget)) {
                    unset($this->__widgets[$i]);
               }
          }
     }

     public static function loadArray($A,$widgets)
     {
          if (!($widgets instanceof self)) {
               return false;
          }

          uasort($A,array('self','arraySort'));

          $result = new self;
          foreach ($A as $v)
          {
               if ($widgets->{$v['id']} != null)
               {
                    $w = clone $widgets->{$v['id']};

                    # Settings
                    unset($v['id']);
                    unset($v['order']);
                    foreach ($v as $sid => $s) {
                         $w->{$sid} = $s;
                    }

                    $result->append($w);
               }
          }

          return $result;
     }

     private static function arraySort($a, $b)
     {
          if ($a['order'] == $b['order']) {
               return 0;
          }
          return $a['order'] > $b['order'] ? 1 : -1;
     }

     private static function sort($a,$b)
     {
          $c = $a->name();
          $d = $b->name();
          if ($c == $d) {
               return 0;
          }
          return ($c < $d) ? -1 : 1;
     }
}

class dcWidget
{
     private $id;
     private $name;
     private $desc;
     private $public_callback = null;
     public $append_callback = null;
     private $settings = array();

     public function serialize($order) {
          $values = array();
          foreach ($this->settings as $k=>$v)
               $values[$k]=$v['value'];
          $values['id']=$this->id;
          $values['order']=$order;
          return $values;
     }

     public function __construct($id,$name,$callback,$desc='')
     {
          $this->public_callback = $callback;
          $this->id = $id;
          $this->name = $name;
          $this->desc = $desc;
     }

     public function id()
     {
          return $this->id;
     }

     public function name()
     {
          return $this->name;
     }

     public function desc()
     {
          return $this->desc;
     }

     public function getCallback()
     {
          return $this->public_callback;
     }

     public function call($i=0)
     {
          if (is_callable($this->public_callback)) {
               return call_user_func($this->public_callback,$this,$i);
          }
          return '<p>Callback not found for widget '.$this->id.'</p>';
     }

     /* Widget rendering tool
     --------------------------------------------------- */
     public function renderTitle($title)
     {
          global $core;

          if (!$title) {
               return '';
          }

          $wtscheme = $core->themes->moduleInfo($core->blog->settings->system->theme,'widgettitleformat');
          if (empty($wtscheme)) {
               $tplset = $core->themes->moduleInfo($core->blog->settings->system->theme,'tplset');
               if (empty($tplset) || $tplset == DC_DEFAULT_TPLSET) {
                    // Use H2 for mustek based themes
                    $wtscheme = '<h2>%s</h2>';
               } else {
                    // Use H3 for currywurst based themes
                    $wtscheme = '<h3>%s</h3>';
               }
          }
          $ret = sprintf($wtscheme,$title);

          return $ret;
     }

     /* Widget settings
     --------------------------------------------------- */
     public function __get($n)
     {
          if (isset($this->settings[$n])) {
               return $this->settings[$n]['value'];
          }
          return null;
     }

     public function __set($n,$v)
     {
          if (isset($this->settings[$n])) {
               $this->settings[$n]['value'] = $v;
          }
     }

     public function setting($name,$title,$value,$type='text')
     {
          if ($type == 'combo') {
               $options = @func_get_arg(4);
               if (!is_array($options)) {
                    return false;
               }
          }

          $this->settings[$name] = array(
               'title' => $title,
               'type' => $type,
               'value' => $value
          );

          if (isset($options)) {
               $this->settings[$name]['options'] = $options;
          }
     }

     public function settings()
     {
          return $this->settings;
     }

     public function formSettings($pr='',&$i=0)
     {
          $res = '';
          foreach ($this->settings as $id => $s)
          {
               $res .= $this->formSetting($id,$s,$pr,$i);
               $i++;
          }

          return $res;
     }

     public function formSetting($id,$s,$pr='',&$i=0)
     {
          $res = '';
          $wfid = "wf-".$i;
          $iname = $pr ? $pr.'['.$id.']' : $id;
          switch ($s['type'])
          {
               case 'text':
                    $res .=
                    '<p><label for="'.$wfid.'">'.$s['title'].'</label> '.
                    form::field(array($iname,$wfid),20,255,html::escapeHTML($s['value']),'maximal').
                    '</p>';
                    break;
               case 'textarea':
                    $res .=
                    '<p><label for="'.$wfid.'">'.$s['title'].'</label> '.
                    form::textarea(array($iname,$wfid),30,5,html::escapeHTML($s['value']),'maximal').
                    '</p>';
                    break;
               case 'check':
                    $res .=
                    '<p>'.form::hidden(array($iname),'0').
                    '<label class="classic" for="'.$wfid.'">'.
                    form::checkbox(array($iname,$wfid),'1',$s['value']).' '.$s['title'].
                    '</label></p>';
                    break;
               case 'radio':
                    $res .= '<p>'.($s['title'] ? '<label class="classic">'.$s['title'].'</label><br/>' : '');
                    if(!empty($s['options'])) {
                         foreach ($s['options'] as $k => $v) {
                              $res .= $k > 0 ? '<br/>' : '';
                              $res .=
                              '<label class="classic" for="'.$wfid.'-'.$k.'">'.
                              form::radio(array($iname,$wfid.'-'.$k),$v[1],$s['value'] == $v[1]).' '.$v[0].
                              '</label>';
                         }
                    }
                    $res .= '</p>';
                    break;
               case 'combo':
                    $res .=
                    '<p><label for="'.$wfid.'">'.$s['title'].'</label> '.
                    form::combo(array($iname,$wfid),$s['options'],$s['value']).
                    '</p>';
                    break;
          }
          return $res;
     }
}