1 files changed, 111 insertions, 0 deletions
diff --git a/library/Icinga/Application/Hook/GrapherHook.php b/library/Icinga/Application/Hook/GrapherHook.php
new file mode 100644
index 0000000..dfb2135
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+++ b/library/Icinga/Application/Hook/GrapherHook.php
@@ -0,0 +1,111 @@
+<?php
+/* Icinga Web 2 | (c) 2013 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Application\Hook;
+
+use Icinga\Exception\ProgrammingError;
+use Icinga\Module\Monitoring\Object\MonitoredObject;
+
+/**
+ * Icinga Web Grapher Hook base class
+ *
+ * Extend this class if you want to integrate your graphing solution nicely into
+ * Icinga Web.
+ */
+abstract class GrapherHook extends WebBaseHook
+{
+    /**
+     * Whether this grapher provides previews
+     *
+     * @var bool
+     */
+    protected $hasPreviews = false;
+
+    /**
+     * Whether this grapher provides tiny previews
+     *
+     * @var bool
+     */
+    protected $hasTinyPreviews = false;
+
+    /**
+     * Constructor must live without arguments right now
+     *
+     * Therefore the constructor is final, we might change our opinion about
+     * this one far day
+     */
+    final public function __construct()
+    {
+        $this->init();
+    }
+
+    /**
+     * Overwrite this function if you want to do some initialization stuff
+     *
+     * @return void
+     */
+    protected function init()
+    {
+    }
+
+    /**
+     * Whether this grapher provides previews
+     *
+     * @return bool
+     */
+    public function hasPreviews()
+    {
+        return $this->hasPreviews;
+    }
+
+    /**
+     * Whether this grapher provides tiny previews
+     *
+     * @return bool
+     */
+    public function hasTinyPreviews()
+    {
+        return $this->hasTinyPreviews;
+    }
+
+    /**
+     * Whether a graph for the monitoring object exist
+     *
+     * @param   MonitoredObject $object
+     *
+     * @return  bool
+     */
+    abstract public function has(MonitoredObject $object);
+
+    /**
+     * Get a preview for the given object
+     *
+     * This function must return an empty string if no graph exists.
+     *
+     * @param   MonitoredObject $object
+     *
+     * @return  string
+     * @throws  ProgrammingError
+     *
+     */
+    public function getPreviewHtml(MonitoredObject $object)
+    {
+        throw new ProgrammingError('This hook provide previews but it is not implemented');
+    }
+
+
+    /**
+     * Get a tiny preview for the given object
+     *
+     * This function must return an empty string if no graph exists.
+     *
+     * @param   MonitoredObject $object
+     *
+     * @return  string
+     * @throws  ProgrammingError
+     */
+    public function getTinyPreviewHtml(MonitoredObject $object)
+    {
+        throw new ProgrammingError('This hook provide tiny previews but it is not implemented');
+    }
+}