Introduce ViewModeSwitcher

library/Eagle/Widget/ViewModeSwitcher.php

@@ -0,0 +1,78 @@
+<?php
+
+namespace Icinga\Module\Eagle\Widget;
+
+use ipl\Html\BaseHtmlElement;
+use ipl\Html\Html;
+use ipl\Web\Url;
+use ipl\Web\Widget\Icon;
+use ipl\Web\Widget\Link;
+
+class ViewModeSwitcher extends BaseHtmlElement
+{
+    const DEFAULT_VIEW_MODE = 'common';
+
+    /** @var array View mode-icon pairs */
+    public static $viewModes = [
+        'compact'  => 'chat-empty',
+        'common'   => 'th-list',
+        'detailed' => 'chat'
+    ];
+
+    /** @var Url */
+    protected $url;
+
+    /** @var string */
+    protected $viewModeParam = 'view';
+
+    protected $tag = 'ul';
+
+    protected $defaultAttributes = ['class' => 'view-mode-switcher'];
+
+    public function __construct(Url $url)
+    {
+        $this->url = $url;
+    }
+
+    /**
+     * Get the view mode URL parameter
+     *
+     * @return string
+     */
+    public function getViewModeParam()
+    {
+        return $this->viewModeParam;
+    }
+
+    /**
+     * Set the view mode URL parameter
+     *
+     * @param string $viewModeParam
+     *
+     * @return $this
+     */
+    public function setViewModeParam($viewModeParam)
+    {
+        $this->viewModeParam = $viewModeParam;
+
+        return $this;
+    }
+
+    protected function assemble()
+    {
+        $viewModeParam = $this->getViewModeParam();
+        $currentViewMode = $this->url->getParam($viewModeParam, static::DEFAULT_VIEW_MODE);
+
+        foreach (static::$viewModes as $viewMode => $icon) {
+            $url = $this->url->with($viewModeParam, $viewMode);
+
+            $link = Html::tag('li', new Link(new Icon($icon), $url));
+
+            if ($viewMode === $currentViewMode) {
+                $link->getAttributes()->add('class', 'active');
+            }
+
+            $this->add($link);
+        }
+    }
+}