monitoring/commands: Add `InstanceCommandForm'

The `InstanceCommandForm' should be the base class for forms that handle program-wide commands.

refs #6593

modules/monitoring/application/forms/Command/Instance/InstanceCommandForm.php

@@ -0,0 +1,92 @@
+<?php
+// {{{ICINGA_LICENSE_HEADER}}}
+// {{{ICINGA_LICENSE_HEADER}}}
+
+namespace Icinga\Module\Monitoring\Form\Command\Instance;
+
+use Icinga\Module\Monitoring\Backend;
+use Icinga\Module\Monitoring\Command\Transport\CommandTransport;
+use Icinga\Web\Form;
+use Icinga\Web\Request;
+
+/**
+ * Base class for forms that handle program-wide commands
+ */
+abstract class InstanceCommandForm extends Form
+{
+    /**
+     * Monitoring backend
+     *
+     * @var Backend
+     */
+    protected $backend;
+
+    /**
+     * Whether the form's inline
+     *
+     * @var bool
+     */
+    protected $inline = false;
+
+    /**
+     * Set the monitoring backend
+     *
+     * @param   Backend $backend
+     *
+     * @return  $this
+     */
+    public function setBackend(Backend $backend)
+    {
+        $this->backend = $backend;
+        return $this;
+    }
+
+    /**
+     * Get the monitoring backend
+     *
+     * @return Backend
+     */
+    public function getBackend()
+    {
+        return $this->backend;
+    }
+
+    /**
+     * Set the form as inline
+     *
+     * @return $this
+     */
+    public function inline()
+    {
+        $this->inline = true;
+        $this->submitLabel = null;  // Inline forms must not have a submit button
+        $class = $this->getAttrib('class');
+        if (is_array($class)) {
+            $class[] = 'inline';
+        } elseif ($class === null) {
+            $class = 'inline';
+        } else {
+            $class .= 'inline';
+        }
+        $this->setAttrib('class', $class);
+        return $this;
+    }
+
+    /**
+     * Get the transport used to send commands
+     *
+     * @param   Request $request
+     *
+     * @return  \Icinga\Module\Monitoring\Command\CommandTransportInterface
+     */
+    public function getTransport(Request $request)
+    {
+        $instance = $request->getParam('instance');
+        if ($instance !== null) {
+            $transport = CommandTransport::create($instance);
+        } else {
+            $transport = CommandTransport::first();
+        }
+        return $transport;
+    }
+}