Widget\Limiter: initial commit

This allows one to easily switch  row count shown on a single page

library/Icinga/Web/Widget/Limiter.php

@@ -0,0 +1,89 @@
+<?php
+
+namespace Icinga\Web\Widget;
+
+use Icinga\Web\Url;
+
+/**
+ * Limiter
+ */
+class Limiter extends AbstractWidget
+{
+    /**
+     * The url
+     *
+     * @var Url
+     */
+    private $url;
+
+    private $max;
+
+    private $pages;
+
+    public function setUrl(Url $url)
+    {
+        $this->url = $url;
+        return $this;
+    }
+
+    public function setCurrentPageCount($pages)
+    {
+        $this->pages = $pages;
+        return $this;
+    }
+
+    public function setMaxLimit($max)
+    {
+        $this->max = $max;
+        return $this;
+    }
+
+    public function render()
+    {
+        if ($this->url === null) {
+            $this->url = Url::fromRequest();
+        }
+
+        $currentLimit = (int) $this->url->getParam('limit', 25); // Default??
+        $availableLimits = array(
+            10 => '10',
+            25 => '25',
+            50 => '50',
+            100 => '100',
+            500 => '500'
+            // 0 => t('all')
+        );
+
+        // if ($this->pages === 1 && $currentLimit === 10) return '';
+
+        $limits = array();
+        $view = $this->view();
+        $gotCurrent = false;
+        foreach ($availableLimits as $limit => $caption) {
+            if ($gotCurrent) {
+                if ($this->pages === 1) {
+                //    break;
+                }
+            }
+            if ($this->max !== null && ($limit === 0 || $limit > $this->max)) {
+            //echo "$limit > $this->max"; break;
+            }
+            if ($limit === $currentLimit) {
+                $gotCurrent = true;
+                $limits[] = $caption;
+            } else {
+                $limits[] = $view->qlink(
+                    $caption,
+                    $this->url->setParam('limit', $limit),
+                    null,
+                    array(
+                        'title' => t(sprintf('Show %s rows on one page', $caption))
+                    )
+                );
+            }
+        }
+
+        if (empty($limits)) return '';
+        return '<span class="widgetLimiter">' . implode(' ', $limits) . '</span>';
+    }
+}