ListPages/Filter

* vastly improved input validation
 * content and type validation occurs when filter is created
 * contextual filters like itemTypes are now only applied in context

includes/ajaxHandler/filter.class.php

@@ -0,0 +1,96 @@
+<?php
+
+if (!defined('AOWOW_REVISION'))
+    die('illegal access');
+
+
+class AjaxFilter extends AjaxHandler
+{
+    public    $doRedirect = true;
+
+    private   $cat        = [];
+    private   $page       = '';
+    private   $filter     = null;
+
+    public function __construct(array $params)
+    {
+        if (!$params)
+            return;
+
+        $p = explode('=', $params[0]);
+
+        $this->page = $p[0];
+
+        if (isset($p[1]))
+            $this->cat[] = $p[1];
+
+        if (count($params) > 1)
+            for ($i = 1; $i < count($params); $i++)
+                $this->cat[] = $params[$i];
+
+        $opts = ['parentCats' => $this->cat];
+
+        switch ($p[0])
+        {
+            case 'achievements':
+                $this->filter = (new AchievementListFilter(true, $opts));
+                break;
+            case 'enchantments':
+                $this->filter = (new EnchantmentListFilter(true, $opts));
+                break;
+            case 'icons':
+                $this->filter = (new IconListFilter(true, $opts));
+                break;
+            case 'items':
+                $this->filter = (new ItemListFilter(true, $opts));
+                break;
+            case 'itemsets':
+                $this->filter = (new ItemsetListFilter(true, $opts));
+                break;
+            case 'npcs':
+                $this->filter = (new CreatureListFilter(true, $opts));
+                break;
+            case 'objects':
+                $this->filter = (new GameObjectListFilter(true, $opts));
+                break;
+            case 'quests':
+                $this->filter = (new QuestListFilter(true, $opts));
+                break;
+            case 'sounds':
+                $this->filter = (new SoundListFilter(true, $opts));
+                break;
+            case 'spells':
+                $this->filter = (new SpellListFilter(true, $opts));
+                break;
+            default:
+                return;
+        }
+
+        parent::__construct($params);
+
+        // always this one
+        $this->handler = 'handleFilter';
+    }
+
+    protected function handleFilter()
+    {
+        $url = '?'.$this->page;
+
+        if ($this->cat)
+            $url .= '='.implode('.', $this->cat);
+
+        $fi = [];
+        if ($x = $this->filter->getFilterString())
+            $url .= '&filter='.$x;
+
+        if ($this->filter->error)
+            $_SESSION['fiError'] = get_class($this->filter);
+
+        if ($fi)
+            $url .= '&filter='.implode(';', $fi);
+
+        // do get request
+        return $url;
+    }
+
+}