MAGETWO-30068: Customer menu tabs aren't displayed as selected for child pages

- Add plugin for selecting menu

Author: okarpenko

app/code/Magento/Theme/etc/di.xml

@@ -52,4 +52,7 @@
     <type name="Magento\Framework\Url\ScopeInterface">
         <plugin name="urlSignature" type="Magento\Theme\Model\Url\Plugin\Signature"/>
     </type>
+    <type name="Magento\Framework\View\Element\Html\Link\Current">
+        <plugin name="saleOrderViewMenu" type="Magento\Framework\View\Plugin\Element\Html\Link\Current"/>
+    </type>
 </config>

dev/tests/unit/testsuite/Magento/View/Element/Html/Link/Current/PluginTest.php

@@ -0,0 +1,112 @@
+<?php
+/**
+ * Copyright © 2015 Magento. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\View\Element\Html\Link\Current;
+
+use Magento\Framework\View\Plugin\Element\Html\Link as Plugin;
+use Magento\TestFramework\Helper\ObjectManager as ObjectManagerHelper;
+
+class PluginTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @var ObjectManagerHelper
+     */
+    protected $objectManagerHelper;
+
+    /**
+     * @var \PHPUnit_Framework_MockObject_MockObject
+     */
+    protected $link;
+
+    /**
+     * @var \PHPUnit_Framework_MockObject_MockObject
+     */
+    protected $plugin;
+
+    /**
+     * @var \PHPUnit_Framework_MockObject_MockObject
+     */
+    protected $request;
+
+    protected function setUp()
+    {
+        $this->objectManagerHelper = new ObjectManagerHelper($this);
+
+        $context = $this->getMock(
+            'Magento\Framework\View\Element\Template\Context',
+            null,
+            [],
+            '',
+            false
+        );
+        $defaultPath = $this->getMock(
+            'Magento\Framework\App\DefaultPath\DefaultPath',
+            null,
+            [],
+            '',
+            false
+        );
+        $this->link = $this->getMock(
+            'Magento\Framework\View\Element\Html\Link\Current',
+            [
+                'getRequest',
+                'getNameInLayout'
+            ],
+            [$context, $defaultPath]
+        );
+        $this->request = $this->getMock(
+            'Magento\Framework\App\Request\Http',
+            [
+                'getModuleName',
+                'getControllerName',
+                'getActionName'
+            ],
+            [],
+            '',
+            false
+        );
+        $this->plugin = new Plugin\Current();
+
+        $this->configuringLinkObject();
+    }
+
+    protected function configuringLinkObject()
+    {
+        $this->configuringRequestObject();
+
+        $this->link
+            ->expects($this->once())
+            ->method('getRequest')
+            ->will($this->returnValue($this->request));
+        $this->link
+            ->expects($this->once())
+            ->method('getNameInLayout')
+            ->will($this->returnValue('customer-account-navigation-orders-link'));
+    }
+
+
+    protected function configuringRequestObject()
+    {
+        $this->request
+            ->expects($this->once())
+            ->method('getModuleName')
+            ->will($this->returnValue('sales'));
+        $this->request
+            ->expects($this->once())
+            ->method('getControllerName')
+            ->will($this->returnValue('order'));
+        $this->request
+            ->expects($this->once())
+            ->method('getActionName')
+            ->will($this->returnValue('view'));
+    }
+
+    public function testIsCurrentOnSalesOrderViewPage()
+    {
+        $this->plugin->beforeIsCurrent($this->link);
+
+        $this->assertTrue($this->link->getData('current'));
+    }
+}

lib/internal/Magento/Framework/View/Plugin/Element/Html/Link/Current.php

@@ -0,0 +1,37 @@
+<?php
+/**
+ * Copyright © 2015 Magento. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\Framework\View\Plugin\Element\Html\Link;
+
+use Magento\Framework\View\Element\Html\Link;
+
+class Current
+{
+    public function beforeIsCurrent(\Magento\Framework\View\Element\Html\Link\Current $subject)
+    {
+        if (
+            $this->isSalesOrderViewPage($subject)
+            && 'customer-account-navigation-orders-link' == $subject->getNameInLayout()
+        ) {
+            $subject->setData('current', true);
+        }
+    }
+
+    /**
+     * @return bool
+     */
+    public function isSalesOrderViewPage(\Magento\Framework\View\Element\Html\Link\Current $subject)
+    {
+        $request = $subject->getRequest();
+        if (
+            $request->getModuleName() == 'sales'
+            && $request->getControllerName() == 'order'
+            && $request->getActionName() == 'view'
+        ) {
+            return true;
+        }
+        return false;
+    }
+}