First working sitemap version.

2016-03-15 02:14:05 +01:00
parent 6c35229ffe
commit 0cfd72374b
46 changed files with 2264 additions and 168 deletions
@@ -1,6 +1,6 @@
 #!/bin/bash

-PYTHON_PATH=/opt/ros/indigo/lib/python2.7/dist-packages
+PYTHON_PATH=/home/matzman/tmp/ros_catkin_ws/install_isolated/lib/python2.7/dist-packages

 # delete old files
 rm -rf devel devel_isolated build build_isolated install install_isolated
@@ -62,7 +62,6 @@ void DeviceImpl::handleCommandMsg(const Variant& msg, const timestamp_t& stamp)


 void DeviceImpl::sendCommand(const Variant& cmd) {
-	std::lock_guard<std::recursive_mutex> lock(objMutex);
 	parent->sendDeviceCommand(this, cmd);
 }

@@ -1,40 +1,291 @@
 {
 	"type": "sitemap/sitemap_template",
 	"title": "TestApp",
-	"rootpage": {
-		"type": "sitemap/sitemap_template#/definitions/page",
-		"title": "Root Page",
-		"elements": [
-			{
-				"type": "sitemap/sitemap_template#/definitions/text_element",
-				"label": "Switch0 Text",
-				"icon" : "some_icon01",
-				"format" : "Format: %1%",
-				"device": { 
-					"id": "dummySwitch0",
-					"pointer": "/switch/value"
-				}
-			}, {
-				"type": "sitemap/sitemap_template#/definitions/switch_element",
-				"label": "Switch0",
-				"icon" : "some_icon02",
-				"format" : "bla: %1%",
-				"device": { 
-					"id": "dummySwitch0",
-					"pointer": "/switch/value"
-				}
-			}, {
-				"type": "sitemap/sitemap_template#/definitions/slider_element",
-				"label": "Slider0",
-				"icon" : "some_icon03",
-				"device": { 
-					"id": "dummyDimmer0",
-					"pointer": "/dimmer/value"
+	"rootpage": "page01",
+	"pages": {
+		"page01": {
+			"type": "sitemap/sitemap_template#/definitions/page",
+			"title": "Root Page",
+			"elements": [
+				{
+					"type": "sitemap/sitemap_template#/definitions/frame_element",
+					"label": "Group 0",
+					"icon" : "some_icon01",
+					"elements" : [
+						{
+							"type": "sitemap/sitemap_template#/definitions/text_element",
+							"label": "Switch0",
+							"icon" : "some_icon01",
+							"format" : "Value: %1%",
+							"linkedPage" : "page02",
+							"device": { 
+								"id": "dummySwitch0",
+								"pointer": "/switch/value"
+							}
+						}, {
+							"type": "sitemap/sitemap_template#/definitions/switch_element",
+							"label": "Switch0",
+							"icon" : "some_icon02",
+							"linkedPage" : "page02",
+							"device": { 
+								"id": "dummySwitch0",
+								"pointer": "/switch/value"
+							},
+							"commandTemplate": {
+								"switch": {
+									"set": null
+								}
+							},
+							"commandValuePointer": "/switch/set"
+						}, {
+							"type": "sitemap/sitemap_template#/definitions/text_element",
+							"label": "Slider0",
+							"icon" : "some_icon01",
+							"format" : "Value: %1%",
+							"device": { 
+								"id": "dummyDimmer0",
+								"pointer": "/dimmer/value"
+							}
+						}, {
+							"type": "sitemap/sitemap_template#/definitions/slider_element",
+							"label": "Slider0",
+							"icon" : "some_icon03",
+							"device": { 
+								"id": "dummyDimmer0",
+								"pointer": "/dimmer/value"
+							},
+							"min": 0,
+							"max": 1,
+							"step": 0.1,
+							"commandTemplate": {
+								"dimmer": {
+									"set": null
+								}
+							},
+							"commandValuePointer": "/dimmer/set"
+						}
+					]
 				},
-				"min": 0,
-				"max": 1,
-				"step": 0.1
-			}
-		]
+				{
+					"type": "sitemap/sitemap_template#/definitions/frame_element",
+					"label": "Group 1",
+					"icon" : "some_icon01",
+					"elements" : [
+						{
+							"type": "sitemap/sitemap_template#/definitions/text_element",
+							"label": "Switch1",
+							"icon" : "some_icon01",
+							"format" : "Value: %1%",
+							"device": { 
+								"id": "dummySwitch1",
+								"pointer": "/switch/value"
+							}
+						}, {
+							"type": "sitemap/sitemap_template#/definitions/switch_element",
+							"label": "Switch1",
+							"icon" : "some_icon02",
+							"device": { 
+								"id": "dummySwitch1",
+								"pointer": "/switch/value"
+							},
+							"commandTemplate": {
+								"switch": {
+									"set": null
+								}
+							},
+							"commandValuePointer": "/switch/set"
+						}, {
+							"type": "sitemap/sitemap_template#/definitions/text_element",
+							"label": "Slider1",
+							"icon" : "some_icon01",
+							"format" : "Value: %1%",
+							"device": { 
+								"id": "dummyDimmer1",
+								"pointer": "/dimmer/value"
+							}
+						}, {
+							"type": "sitemap/sitemap_template#/definitions/slider_element",
+							"label": "Slider1",
+							"icon" : "some_icon03",
+							"device": { 
+								"id": "dummyDimmer1",
+								"pointer": "/dimmer/value"
+							},
+							"min": 0,
+							"max": 1,
+							"step": 0.1,
+							"commandTemplate": {
+								"dimmer": {
+									"set": null
+								}
+							},
+							"commandValuePointer": "/dimmer/set"
+						}
+					]
+				},
+				{
+					"type": "sitemap/sitemap_template#/definitions/frame_element",
+					"label": "Group 2",
+					"icon" : "some_icon01",
+					"elements" : [
+						{
+							"type": "sitemap/sitemap_template#/definitions/text_element",
+							"label": "Switch2",
+							"icon" : "some_icon01",
+							"format" : "Value: %1%",
+							"device": { 
+								"id": "dummySwitch2",
+								"pointer": "/switch/value"
+							}
+						}, {
+							"type": "sitemap/sitemap_template#/definitions/switch_element",
+							"label": "Switch2",
+							"icon" : "some_icon02",
+							"device": { 
+								"id": "dummySwitch2",
+								"pointer": "/switch/value"
+							},
+							"commandTemplate": {
+								"switch": {
+									"set": null
+								}
+							},
+							"commandValuePointer": "/switch/set"
+						}, {
+							"type": "sitemap/sitemap_template#/definitions/text_element",
+							"label": "Slider2",
+							"icon" : "some_icon01",
+							"format" : "Value: %1%",
+							"device": { 
+								"id": "dummyDimmer2",
+								"pointer": "/dimmer/value"
+							}
+						}, {
+							"type": "sitemap/sitemap_template#/definitions/slider_element",
+							"label": "Slider2",
+							"icon" : "some_icon03",
+							"device": { 
+								"id": "dummyDimmer2",
+								"pointer": "/dimmer/value"
+							},
+							"min": 0,
+							"max": 1,
+							"step": 0.1,
+							"commandTemplate": {
+								"dimmer": {
+									"set": null
+								}
+							},
+							"commandValuePointer": "/dimmer/set"
+						}
+					]
+				},
+				{
+					"type": "sitemap/sitemap_template#/definitions/frame_element",
+					"label": "Group 3",
+					"icon" : "some_icon01",
+					"elements" : [
+						{
+							"type": "sitemap/sitemap_template#/definitions/text_element",
+							"label": "Switch3",
+							"icon" : "some_icon01",
+							"format" : "Value: %1%",
+							"device": { 
+								"id": "dummySwitch3",
+								"pointer": "/switch/value"
+							}
+						}, {
+							"type": "sitemap/sitemap_template#/definitions/switch_element",
+							"label": "Switch3",
+							"icon" : "some_icon02",
+							"device": { 
+								"id": "dummySwitch3",
+								"pointer": "/switch/value"
+							},
+							"commandTemplate": {
+								"switch": {
+									"set": null
+								}
+							},
+							"commandValuePointer": "/switch/set"
+						}, {
+							"type": "sitemap/sitemap_template#/definitions/text_element",
+							"label": "Slider3",
+							"icon" : "some_icon01",
+							"format" : "Value: %1%",
+							"device": { 
+								"id": "dummyDimmer3",
+								"pointer": "/dimmer/value"
+							}
+						}, {
+							"type": "sitemap/sitemap_template#/definitions/slider_element",
+							"label": "Slider3",
+							"icon" : "some_icon03",
+							"device": { 
+								"id": "dummyDimmer3",
+								"pointer": "/dimmer/value"
+							},
+							"min": 0,
+							"max": 1,
+							"step": 0.1,
+							"commandTemplate": {
+								"dimmer": {
+									"set": null
+								}
+							},
+							"commandValuePointer": "/dimmer/set"
+						}
+					]
+				}
+			]
+		},
+		"page02": {
+			"type": "sitemap/sitemap_template#/definitions/page",
+			"title": "Page 2",
+			"elements": [
+				{
+					"type": "sitemap/sitemap_template#/definitions/frame_element",
+					"label": "Some Text",
+					"icon" : "some_icon01",
+					"elements" : [
+						{
+							"type": "sitemap/sitemap_template#/definitions/text_element",
+							"label": "Switch0 Text",
+							"icon" : "some_icon01",
+							"format" : "blabla: %1%",
+							"device": { 
+								"id": "dummyDimmer1",
+								"pointer": "/dimmer/value"
+							},
+							"linkedPage" : "page03"
+						}
+					]
+				}
+			]
+		},
+		"page03": {
+			"type": "sitemap/sitemap_template#/definitions/page",
+			"title": "Page 3",
+			"elements": [
+				{
+					"type": "sitemap/sitemap_template#/definitions/frame_element",
+					"label": "Some Text 2",
+					"icon" : "some_icon01",
+					"elements" : [
+						{
+							"type": "sitemap/sitemap_template#/definitions/text_element",
+							"label": "Switch2 Text",
+							"icon" : "some_icon01",
+							"format" : "blabla: %1%",
+							"device": { 
+								"id": "dummyDimmer3",
+								"pointer": "/dimmer/value"
+							},
+							"linkedPage" : "page01"
+						}
+					]
+				}
+			]
+		}
 	}
 }
@@ -0,0 +1,166 @@
+{
+	"type": "sitemap/sitemap_template",
+	"title": "Hue Lights App",
+	"rootpage": "page01",
+	"pages": {
+		"page01": {
+			"type": "sitemap/sitemap_template#/definitions/page",
+			"title": "My Room",
+			"elements": [
+				{
+					"type": "sitemap/sitemap_template#/definitions/frame_element",
+					"label": "Lightstrips 1",
+					"icon" : "some_icon01",
+					"elements" : [
+						{
+							"type": "sitemap/sitemap_template#/definitions/switch_element",
+							"label": "Lightstrips 1 Switch",
+							"icon" : "some_icon02",
+							"device": { 
+								"id": "huelight1",
+								"pointer": "/switch/value"
+							},
+							"commandTemplate": {
+								"switch": {
+									"set": null
+								}
+							},
+							"commandValuePointer": "/switch/set"
+						}, {
+							"type": "sitemap/sitemap_template#/definitions/slider_element",
+							"label": "Lightstrips 1 Slider",
+							"icon" : "some_icon03",
+							"device": { 
+								"id": "huelight1",
+								"pointer": "/brightness/value"
+							},
+							"min": 0,
+							"max": 1,
+							"step": 0.1,
+							"commandTemplate": {
+								"brightness": {
+									"set": null
+								}
+							},
+							"commandValuePointer": "/brightness/set"
+						}
+					]
+				}, {
+					"type": "sitemap/sitemap_template#/definitions/frame_element",
+					"label": "Lightstrips 2",
+					"icon" : "some_icon01",
+					"elements" : [
+						{
+							"type": "sitemap/sitemap_template#/definitions/switch_element",
+							"label": "Lightstrips 2 Switch",
+							"icon" : "some_icon02",
+							"device": { 
+								"id": "huelight2",
+								"pointer": "/switch/value"
+							},
+							"commandTemplate": {
+								"switch": {
+									"set": null
+								}
+							},
+							"commandValuePointer": "/switch/set"
+						}, {
+							"type": "sitemap/sitemap_template#/definitions/slider_element",
+							"label": "Lightstrips 2 Slider",
+							"icon" : "some_icon03",
+							"device": { 
+								"id": "huelight2",
+								"pointer": "/brightness/value"
+							},
+							"min": 0,
+							"max": 1,
+							"step": 0.1,
+							"commandTemplate": {
+								"brightness": {
+									"set": null
+								}
+							},
+							"commandValuePointer": "/brightness/set"
+						}
+					]
+				}, {
+					"type": "sitemap/sitemap_template#/definitions/frame_element",
+					"label": "ZimmerLampe",
+					"icon" : "some_icon01",
+					"elements" : [
+						{
+							"type": "sitemap/sitemap_template#/definitions/switch_element",
+							"label": "ZimmerLampe Switch",
+							"icon" : "some_icon02",
+							"device": { 
+								"id": "huelight3",
+								"pointer": "/switch/value"
+							},
+							"commandTemplate": {
+								"switch": {
+									"set": null
+								}
+							},
+							"commandValuePointer": "/switch/set"
+						}, {
+							"type": "sitemap/sitemap_template#/definitions/slider_element",
+							"label": "ZimmerLampe Slider",
+							"icon" : "some_icon03",
+							"device": { 
+								"id": "huelight3",
+								"pointer": "/brightness/value"
+							},
+							"min": 0,
+							"max": 1,
+							"step": 0.1,
+							"commandTemplate": {
+								"brightness": {
+									"set": null
+								}
+							},
+							"commandValuePointer": "/brightness/set"
+						}
+					]
+				}, {
+					"type": "sitemap/sitemap_template#/definitions/frame_element",
+					"label": "TischLampe",
+					"icon" : "some_icon01",
+					"elements" : [
+						{
+							"type": "sitemap/sitemap_template#/definitions/switch_element",
+							"label": "TischLampe Switch",
+							"icon" : "some_icon02",
+							"device": { 
+								"id": "huelight4",
+								"pointer": "/switch/value"
+							},
+							"commandTemplate": {
+								"switch": {
+									"set": null
+								}
+							},
+							"commandValuePointer": "/switch/set"
+						}, {
+							"type": "sitemap/sitemap_template#/definitions/slider_element",
+							"label": "TischLampe Slider",
+							"icon" : "some_icon03",
+							"device": { 
+								"id": "huelight4",
+								"pointer": "/brightness/value"
+							},
+							"min": 0,
+							"max": 1,
+							"step": 0.1,
+							"commandTemplate": {
+								"brightness": {
+									"set": null
+								}
+							},
+							"commandValuePointer": "/brightness/set"
+						}
+					]
+				}
+			]
+		}
+	}
+}
@@ -59,6 +59,8 @@ public:
 	virtual std::map<std::string, std::weak_ptr<sitemaptemplate::SitemapTemplate>> getSitemaps() noexcept = 0;
 	virtual std::vector<std::string> getSitemapNames() noexcept = 0;

+	virtual std::weak_ptr<sitemaptemplate::SitemapTemplate> getDefaultSitemap() noexcept = 0;
+
 };


@@ -20,20 +20,78 @@ class SitemapService;

 namespace sitemaptemplate {

-
+class SitemapTemplate;
 class Page;
 class Element;
 class AtomicElement;
 class CompositeElement;
 class Device;

+/*
+ * Sitemap event type.
+ *
+ **/
+enum class SitemapEventType : int {
+	ALL_EVENTS = 1,
+	SITEMAP_ELEMENT_CHANGED = 2,
+	SITEMAP_INVALIDATED = 3
+};
+
+/**
+ * Base class for sitemap events.
+ */
+class SitemapEvent {
+public:
+	typedef std::chrono::system_clock::time_point timestamp_t;
+
+	SitemapEventType eventType;
+
+	SitemapTemplate* const sitemap;
+
+	const timestamp_t timestamp;
+
+	SitemapEvent(SitemapTemplate* sitemap, const SitemapEventType& type, const timestamp_t& timestamp)
+		: eventType(type), sitemap(sitemap), timestamp(timestamp) {}
+};
+
+
+/**
+ * sitemap element changed event.
+ */
+class SitemapElementChangedEvent
+	: public SitemapEvent {
+public:
+	std::vector<std::weak_ptr<Element>> elements;
+
+	SitemapElementChangedEvent(SitemapTemplate* sitemap, const timestamp_t& timestamp)
+		: SitemapEvent(sitemap,SitemapEventType::SITEMAP_ELEMENT_CHANGED, timestamp) {}
+};
+
+
+/**
+ * sitemap invalidated event.
+ */
+class SitemapInvalidatedEvent
+	: public SitemapEvent {
+public:
+	SitemapInvalidatedEvent(SitemapTemplate* sitemap, const timestamp_t& timestamp)
+		: SitemapEvent(sitemap,SitemapEventType::SITEMAP_INVALIDATED, timestamp) {}
+};


 class SitemapTemplate
-	: public virtual interface::Object {
+	: public virtual interface::Observer<devicerepository::DeviceEventType, devicerepository::DeviceEvent>,
+	  public virtual interface::ObservableObject<SitemapEventType, SitemapEvent> {
 public:
 	virtual SitemapService* getParent() noexcept = 0;
+	virtual size_t pageCount() noexcept = 0;
+	virtual std::weak_ptr<Page> getPage(const std::string& name) noexcept = 0;
+	virtual std::vector<std::weak_ptr<Page>> getPages(const std::string& name) noexcept = 0;
 	virtual std::weak_ptr<Page> getRootPage() noexcept = 0;
+	virtual const std::string& getRootPageName() noexcept = 0;
+	virtual std::weak_ptr<Element> getPageElement(size_t& uid) noexcept = 0;
+
+	virtual const std::string& getName() noexcept = 0;

 	virtual libvariant::Variant renderSitemap() = 0;
 };
@@ -44,7 +102,7 @@ class Page
 	: public virtual interface::Object {
 public:
 	virtual SitemapTemplate* getSiteMap() noexcept = 0;
-	virtual Page* getParent() noexcept = 0;
+	virtual const std::string& getName() noexcept = 0;

 	virtual size_t elementCount() noexcept = 0;
 	virtual std::weak_ptr<Element> getElement(size_t index) noexcept = 0;
@@ -99,7 +157,8 @@ public:
 	virtual const std::string& getFormat() noexcept = 0;
 	virtual std::weak_ptr<Device> getDevice() noexcept = 0;
 	virtual const libvariant::Variant& getAdditionalParams() noexcept = 0;
-	virtual std::weak_ptr<Page> getLinkedToPage() noexcept = 0;
+	virtual std::weak_ptr<Page> getLinkedPage() noexcept = 0;
+	virtual const std::string& getLinkedPageName() noexcept = 0;
 };


@@ -107,10 +166,12 @@ public:
 class Device
 	: public virtual interface::Object {
 public:
+	virtual std::weak_ptr<Element> getParent() noexcept = 0;
 	virtual const std::string& getDeviceID() noexcept = 0;
 	virtual std::weak_ptr<devicerepository::Device> getDevice() noexcept = 0;
 	virtual const std::string& getPointer() noexcept = 0;
 	virtual bool deviceExists() noexcept = 0;
+	virtual void sendCommand(const libvariant::Variant& cmd) = 0;
 };


@@ -1,6 +1,7 @@
 <launch>
 	<group ns="/hos/sitemap/sitemap_templates">
 		<param name="test01" textfile="$(find hos_cosgi_sitemap)/examples/test01.json"/>
+		<param name="test02" textfile="$(find hos_cosgi_sitemap)/examples/test02.json"/>
 	</group>
 	
 	<group ns="/hos/types/repository/sitemap">
@@ -13,12 +13,24 @@
 			"type": "string",
 			"description": ""
 		},
+		"default": {
+			"type": "boolean",
+			"description": ""
+		},
+		"pages": {
+			"type": "object",
+			"patternProperties": {
+				"[A-Za-z0-9_-]+": {
+					"$ref": "#/definitions/page"
+				}
+			}
+		},
 		"rootpage": {
-			"$ref": "#/definitions/page"
+			"type": "string"
 		}
 	},
 	"additionalProperties": false,
-	"required": ["title", "rootpage"],
+	"required": ["title", "pages", "rootpage"],
 	
 	"definitions": {
 		
@@ -109,7 +121,7 @@
 				"icon": {
 					"type": "string"
 				},
-				"page": {
+				"linkedPage": {
 					"type": "string"
 				}
 			}
@@ -103,13 +103,38 @@ void SitemapServiceImpl::addSitemap(const std::string& name, XmlRpc::XmlRpcValue
 			throw std::runtime_error("title is not a string.");
 		}
 		std::string title = titleRaw.AsString();
-		auto rootpage = value["rootpage"];
-		if (!rootpage.IsMap()) {
-			throw std::runtime_error("rootpage is not a map.");
+		auto rootpageRaw = value["rootpage"];
+		if (!rootpageRaw.IsString()) {
+			throw std::runtime_error("rootpage is not a string.");
+		}
+		std::string rootpage = rootpageRaw.AsString();
+		bool isDefault = false;
+		if (value.Contains("default")) {
+			auto isDefaultRaw = value["default"];
+			if (!isDefaultRaw.IsBool()) {
+				throw std::runtime_error("default is not a boolean.");
+			}
+			isDefault = isDefaultRaw.IsTrue();
+		}
+		auto pages = value["pages"];
+		if (!pages.IsMap()) {
+			throw std::runtime_error("pages is not a map.");
+		}
+		std::shared_ptr<sitemaptemplate::SitemapTemplateImpl> st = std::make_shared<sitemaptemplate::SitemapTemplateImpl>(*this, name, title);
+		for (auto page : pages.AsMap()) {
+			st->addPage(page.first, page.second);
+		}
+		if (!st->setRootPageName(rootpage)) {
+			ROS_WARN_STREAM("Sitemap " << st->getName() << " has unknown root page " << rootpage << ".");
 		}
-		std::shared_ptr<sitemaptemplate::SitemapTemplateImpl> st = std::make_shared<sitemaptemplate::SitemapTemplateImpl>(*this, title);
-		st->createPage(rootpage);
 		sitemapTemplates.insert({name, st});
+		if (!sitemapDefault || isDefault) {
+			sitemapDefault = st;
+		}
+		repoService->addObserver(devicerepository::DeviceEventType::ALL_EVENTS, st.get());
+		if (name.compare("default") == 0) {
+			ROS_WARN("There exists a sitemap with name \"default\".");
+		}
 	} else  {
 		std::stringstream ss;
 		ss << "Could not validate sitemap config value: " << sr.PrettyPrintMessage();
@@ -146,6 +171,10 @@ std::vector<std::string> SitemapServiceImpl::getSitemapNames() noexcept {
 }


+std::weak_ptr<sitemaptemplate::SitemapTemplate> SitemapServiceImpl::getDefaultSitemap() noexcept {
+	return std::static_pointer_cast<sitemaptemplate::SitemapTemplate>(sitemapDefault);
+}
+
 } /* namespace sitemap */
 } /* namespace service */
 } /* namespace cosgi */
@@ -38,6 +38,8 @@ private:
 	bool initialized = false;

 	std::map<std::string, std::shared_ptr<sitemaptemplate::SitemapTemplateImpl>> sitemapTemplates;
+	std::shared_ptr<sitemaptemplate::SitemapTemplateImpl> sitemapDefault;
+

 	void init() noexcept;
 	void addSitemap(const std::string& name, XmlRpc::XmlRpcValue& rawValue);
@@ -72,6 +74,8 @@ public:

 	virtual std::vector<std::string> getSitemapNames() noexcept override;

+	virtual std::weak_ptr<sitemaptemplate::SitemapTemplate> getDefaultSitemap() noexcept override;
+

 	/* Internal */

@@ -1,5 +1,6 @@

 #include "SitemapTemplateImpl.h"
+#include <iostream>

 namespace hos {
 namespace cosgi {
@@ -9,54 +10,6 @@ namespace sitemaptemplate {



-std::atomic<uint64_t> ElementImpl::nextID;
-
-std::shared_ptr<PageImpl> SitemapTemplateImpl::createPage(const libvariant::Variant& param, PageImpl* parent) {
-	std::shared_ptr<PageImpl> newPage;
-	if (!parent && rootPage) {
-		throw std::runtime_error("There is already a root page.");
-	}
-	auto titleRaw = param["title"];
-	if (!titleRaw.IsString()) {
-		throw std::runtime_error("title is not a string.");
-	}
-	std::string title = titleRaw.AsString();
-	auto elements = param["elements"];
-	if (!elements.IsList()) {
-		throw std::runtime_error("elements is not a list.");
-	}
-	newPage = std::make_shared<PageImpl>(*this, title, parent);
-	for ( auto e : elements.AsList()) {
-		newPage->createElement(e);
-	}
-	if (!parent) {
-		rootPage = newPage;
-	}
-	return newPage;
-}
-
-
-std::shared_ptr<DeviceImpl> SitemapTemplateImpl::createDevice(const libvariant::Variant& param) {
-	auto idRaw = param["id"];
-	if (!idRaw.IsString()) {
-		throw std::runtime_error("id is not a string.");
-	}
-	std::string id = idRaw.AsString();
-	std::string pointer;
-	auto pointerRaw = param["pointer"];
-	if (!pointerRaw.IsString()) {
-		throw std::runtime_error("pointer is not a string.");
-	} else if (pointerRaw.IsString()) {
-		pointer = pointerRaw.AsString();
-	}
-	auto devRepo = parent.getDeviceRepository();
-	auto device = devRepo->getDevice(id);
-	std::shared_ptr<DeviceImpl> newDevice = std::make_shared<DeviceImpl>(id, device, pointer);
-	return newDevice;
-}
-
-
-
 namespace {

 struct _elementTypeInfo {
@@ -75,26 +28,85 @@ _elementTypeInfo elementTypeInfo[] = {

 }

+std::atomic<uint64_t> ElementImpl::nextID;

+std::shared_ptr<PageImpl> SitemapTemplateImpl::addPage(const std::string& name, const libvariant::Variant& pageRaw) {
+	auto titleRaw = pageRaw["title"];
+	if (!titleRaw.IsString()) {
+		throw std::runtime_error("title is not a string.");
+	}
+	std::string title = titleRaw.AsString();
+	auto elements = pageRaw["elements"];
+	if (!elements.IsList()) {
+		throw std::runtime_error("elements is not a list.");
+	}
+	auto newPage = std::make_shared<PageImpl>(*this, name, title);
+	for (auto element : elements.AsList()) {
+		newPage->addElement(element);
+	}
+	pages.insert({name, newPage});
+	return newPage;
+}

-std::vector<std::weak_ptr<Element>> PageImpl::getElements() noexcept {
-	std::vector<std::weak_ptr<Element>> retval;
-	for (auto i : elements) {
-		retval.push_back(std::static_pointer_cast<Element>(i));
+std::weak_ptr<Page> SitemapTemplateImpl::getPage(const std::string& name) noexcept {
+	auto page = pages.find(name);
+	if (page == pages.end()) {
+		return std::weak_ptr<Page>();
+	} else {
+		return page->second;
+	}
+}
+
+std::vector<std::weak_ptr<Page>> SitemapTemplateImpl::getPages(const std::string& name) noexcept {
+	std::vector<std::weak_ptr<Page>> retval;
+	for (auto page : pages) {
+		retval.push_back(page.second);
 	}
 	return retval;
 }

-std::vector<std::weak_ptr<Element>> CompositeElementImpl::getElements() noexcept {
-	std::vector<std::weak_ptr<Element>> retval;
-	for (auto i : elements) {
-		retval.push_back(std::static_pointer_cast<Element>(i));
+std::weak_ptr<Page> SitemapTemplateImpl::getRootPage() noexcept {
+	return getPage(rootPageName);
+}
+
+bool SitemapTemplateImpl::setRootPageName(const std::string& name) noexcept {
+	rootPageName = name;
+	if (pages.find(name) != pages.end()) {
+		return true;
 	}
-	return retval;
+	return false;
+}
+
+std::weak_ptr<Element> SitemapTemplateImpl::getPageElement(size_t& uid) noexcept {
+	auto r = pageElements.find(uid);
+	if (r != pageElements.end()) {
+		return r->second;
+	}
+	return std::weak_ptr<Element>();
+}
+
+std::shared_ptr<DeviceImpl> SitemapTemplateImpl::createDevice(const libvariant::Variant& param, const libvariant::Variant& commandTemplate, const std::string& commandValuePointer) {
+	auto idRaw = param["id"];
+	if (!idRaw.IsString()) {
+		throw std::runtime_error("id is not a string.");
+	}
+	std::string id = idRaw.AsString();
+	std::string pointer;
+	auto pointerRaw = param["pointer"];
+	if (!pointerRaw.IsString()) {
+		throw std::runtime_error("pointer is not a string.");
+	} else if (pointerRaw.IsString()) {
+		pointer = pointerRaw.AsString();
+	}
+	auto devRepo = parent.getDeviceRepository();
+	auto device = devRepo->getDevice(id);
+	std::shared_ptr<DeviceImpl> newDevice = std::make_shared<DeviceImpl>(id, device, pointer, commandTemplate, commandValuePointer);
+	devices.insert({id, newDevice});
+	return newDevice;
 }


-std::shared_ptr<ElementImpl> PageImpl::createElement(const libvariant::Variant& param, CompositeElementImpl* parent) {
+std::shared_ptr<ElementImpl> SitemapTemplateImpl::createElement(PageImpl& page, const libvariant::Variant& param, CompositeElementImpl* parent) {
 	std::shared_ptr<ElementImpl> newElement;
 	libvariant::Variant addParams = param.Copy();
 	auto typeRaw = param["type"];
@@ -134,13 +146,23 @@ std::shared_ptr<ElementImpl> PageImpl::createElement(const libvariant::Variant&
 		}
 	}
 	if (info->isComposite) {
+		auto elements = param["elements"];
+		if (elements.IsNull()) {
+			throw std::runtime_error("elements is missing.");
+		} else if (!elements.IsList()) {
+			throw std::runtime_error("elements is not an array.");
+		}
+		addParams.Erase("elements");
 		switch (info->type) {
 			case ElementType::Frame:
-				newElement = std::make_shared<FrameElementImpl>(*this, info->typeString, label, icon, parent);
+				newElement = std::make_shared<FrameElementImpl>(page, info->typeString, label, icon, parent);
 				break;
 			default:
 				throw std::runtime_error((boost::format("Registered element type %1% is unknown.") % info->typeName).str());
 		}
+		for (auto element : elements.AsList()) {
+			std::static_pointer_cast<CompositeElementImpl>(newElement)->addElement(element);
+		}
 	} else {
 		std::string format;
 		if (param.Contains("format")) {
@@ -158,38 +180,120 @@ std::shared_ptr<ElementImpl> PageImpl::createElement(const libvariant::Variant&
 			if (!deviceRaw.IsMap()) {
 				throw std::runtime_error("device is not a map.");
 			} else {
-				device = sitemap.createDevice(deviceRaw);
+				libvariant::Variant commandTemplate;
+				std::string commandValuePointer;
+				if (param.Contains("commandTemplate")) {
+					commandTemplate = param["commandTemplate"];
+					addParams.Erase("commandTemplate");
+				}
+				if (param.Contains("commandValuePointer") && param["commandValuePointer"].IsString()) {
+					commandValuePointer = param["commandValuePointer"].AsString();
+					addParams.Erase("commandValuePointer");
+				}
+				device = createDevice(deviceRaw, commandTemplate, commandValuePointer);
 				addParams.Erase("device");
 			}
 		}
-		libvariant::Variant pageRaw;
-		if (param.Contains("page")) {
-		pageRaw = param["page"];
-			if (!pageRaw.IsMap()) {
-				throw std::runtime_error("page is not a map.");
+		libvariant::Variant linkedPageRaw;
+		if (param.Contains("linkedPage")) {
+		linkedPageRaw = param["linkedPage"];
+			if (!linkedPageRaw.IsString()) {
+				throw std::runtime_error("linkedPage is not a string.");
 			} else {
-				addParams.Erase("page");
+				addParams.Erase("linkedPage");
 			}
 		}
 		std::shared_ptr<AtomicElementImpl> newAElement;
 		switch (info->type) {
 			case ElementType::Text:
-				newAElement = std::make_shared<TextElementImpl>(*this, info->typeString, label, icon, format, device, addParams, parent);
+				newAElement = std::make_shared<TextElementImpl>(page, info->typeString, label, icon, format, device, addParams, parent);
 				break;
 			case ElementType::Slider:
-				newAElement = std::make_shared<SliderElementImpl>(*this, info->typeString, label, icon, format, device, addParams, parent);
+				newAElement = std::make_shared<SliderElementImpl>(page, info->typeString, label, icon, format, device, addParams, parent);
 				break;
 			case ElementType::Switch:
-				newAElement = std::make_shared<SwitchElementImpl>(*this, info->typeString, label, icon, format, device, addParams, parent);
+				newAElement = std::make_shared<SwitchElementImpl>(page, info->typeString, label, icon, format, device, addParams, parent);
 				break;
 			default:
 				throw std::runtime_error((boost::format("Registered element type %1% is unknown.") % info->typeName).str());
 		}
-		if (pageRaw.IsMap()) {
-			newAElement->createLinkedToPage(pageRaw);
+		if (device) {
+			device->setParent(newAElement);
+		}
+		if (linkedPageRaw.IsString()) {
+			newAElement->setLinkedPage(linkedPageRaw.AsString());
 		}
 		newElement = newAElement;
 	}
+	pageElements.insert({newElement->getID(), newElement});
+	return newElement;
+}
+
+void SitemapTemplateImpl::notificationReceived(observable_type* o, const devicerepository::DeviceEventType& key, const devicerepository::DeviceEvent* e) noexcept {
+	SitemapElementChangedEvent event(this, std::chrono::system_clock::now());
+	switch (e->eventType) {
+		case devicerepository::DeviceEventType::DEVICE_ADDED:
+			{
+				auto range = devices.equal_range(e->device->getDeviceID());
+				for (auto i = range.first; i != range.second && i != devices.end(); i++) {
+					auto dev = i->second.lock();
+					if (!dev->deviceExists()) {
+						dev->resolveDevice();
+						event.elements.push_back(dev->getParent());
+					}
+				}
+			}
+			break;
+		case devicerepository::DeviceEventType::DEVICE_REMOVED:
+			{
+				auto range = devices.equal_range(e->device->getDeviceID());
+				for (auto i = range.first; i != range.second && i != devices.end(); i++) {
+					auto dev = i->second.lock();
+					dev->resolveDevice();
+					event.elements.push_back(dev->getParent());
+				}
+			}
+			break;
+		case devicerepository::DeviceEventType::STATE_CHANGED:
+			{
+				auto range = devices.equal_range(e->device->getDeviceID());
+				for (auto i = range.first; i != range.second && i != devices.end(); i++) {
+					auto dev = i->second.lock();
+					event.elements.push_back(dev->getParent());
+				}
+			}
+			break;
+		default:
+			break;
+	}
+	if (event.elements.size() > 0) {
+		notifyObservers(SitemapEventType::ALL_EVENTS, SitemapEventType::SITEMAP_ELEMENT_CHANGED, &event);
+		notifyObservers(SitemapEventType::SITEMAP_ELEMENT_CHANGED, &event);
+	}
+}
+
+
+
+
+std::vector<std::weak_ptr<Element>> PageImpl::getElements() noexcept {
+	std::vector<std::weak_ptr<Element>> retval;
+	for (auto i : elements) {
+		retval.push_back(std::static_pointer_cast<Element>(i));
+	}
+	return retval;
+}
+
+std::vector<std::weak_ptr<Element>> CompositeElementImpl::getElements() noexcept {
+	std::vector<std::weak_ptr<Element>> retval;
+	for (auto i : elements) {
+		retval.push_back(std::static_pointer_cast<Element>(i));
+	}
+	return retval;
+}
+
+
+std::shared_ptr<ElementImpl> PageImpl::addElement(const libvariant::Variant& param, CompositeElementImpl* parent) {
+	std::shared_ptr<ElementImpl> newElement = sitemap.createElement(*this, param, parent);
 	if (!parent) {
 		elements.push_back(newElement);
 	}
@@ -198,33 +302,40 @@ std::shared_ptr<ElementImpl> PageImpl::createElement(const libvariant::Variant&



-std::shared_ptr<ElementImpl> CompositeElementImpl::createElement(const libvariant::Variant& param) {
-	std::shared_ptr<ElementImpl> newElement = page.createElement(param, this);
+std::shared_ptr<ElementImpl> CompositeElementImpl::addElement(const libvariant::Variant& param) {
+	std::shared_ptr<ElementImpl> newElement = page.addElement(param, this);
 	elements.push_back(newElement);
 	return newElement;
 }


-std::shared_ptr<PageImpl> AtomicElementImpl::createLinkedToPage(const libvariant::Variant& param) {
-	if (linkedToPage) {
-		throw std::runtime_error("There is already a linked page.");
+bool AtomicElementImpl::setLinkedPage(const std::string& pagename) noexcept {
+	linkedPageName = pagename;
+	if (!this->page.getSiteMap()->getPage(linkedPageName).expired()) {
+		return true;
 	}
-	linkedToPage = page.sitemap.createPage(param, &page);
-	return linkedToPage;
+	return false;
 }


 libvariant::Variant SitemapTemplateImpl::renderSitemap() {
 	libvariant::Variant retval = libvariant::Variant::Map();
 	retval["title"] = title;
-	retval["rootpage"] = rootPage->renderSitemap();
+	retval["name"] = name;
 	retval["type"] = "sitemap/sitemap";
+	retval["rootpage"] = rootPageName;
+	auto tmp = libvariant::Variant::Map();
+	for (auto page : pages) {
+		tmp[page.first] = page.second->renderSitemap();
+	}
+	retval["pages"] = tmp;
 	return retval;
 }

 libvariant::Variant PageImpl::renderSitemap() {
 	libvariant::Variant retval = libvariant::Variant::Map();
 	retval["title"] = title;
+	retval["name"] = name;
 	libvariant::Variant elements = libvariant::Variant::List();
 	for (auto i : this->elements) {
 		elements.Append(i->renderSitemap());
@@ -246,20 +357,27 @@ libvariant::Variant CompositeElementImpl::renderSitemap() {
 	}
 	retval["elements"] = elements;
 	retval["type"] = typeString;
+	retval["uid"] = id;
 	return retval;
 }

+
+std::weak_ptr<Page> AtomicElementImpl::getLinkedPage() noexcept {
+	return this->page.getSiteMap()->getPage(linkedPageName);
+}
+
 libvariant::Variant AtomicElementImpl::renderSitemap() {
 	libvariant::Variant retval = libvariant::Variant::Map();
 	retval["label"] = label;
 	if (!icon.empty()) {
 		retval["icon"] = icon;
 	}
-	if (linkedToPage) {
-		retval["page"] = linkedToPage->renderSitemap();
+	if (!linkedPageName.empty()) {
+		retval["linkedPage"] = linkedPageName;
 	}
 	retval["value"] = _getDeviceValue();
 	retval["type"] = typeString;
+	retval["uid"] = id;
 	retval.Merge(additionalParams);
 	return retval;
 }
@@ -267,7 +385,7 @@ libvariant::Variant AtomicElementImpl::renderSitemap() {

 libvariant::Variant AtomicElementImpl::_getDeviceValue() {
 	libvariant::Variant devState;
-	if (device->deviceExists()) {
+	if (device && device->deviceExists()) {
 		try {
 			devState = device->getDevice().lock()->getCurrentState();
 			if (!device->getPointer().empty()) {
@@ -280,7 +398,11 @@ libvariant::Variant AtomicElementImpl::_getDeviceValue() {
 		devState = "NaN";
 	}
 	if (!format.empty()) {
-		devState = (boost::format(format) % devState.AsString()).str();
+		try {
+			devState = (boost::format(format) % devState.AsString()).str();
+		} catch (boost::io::format_error& e) {
+			devState = format;
+		}
 	}
 	return devState;
 }
@@ -321,6 +443,21 @@ libvariant::Variant SwitchElementImpl::_getDeviceValue() {
 	return devState;
 }

+void DeviceImpl::resolveDevice() noexcept {
+	if (!parent.expired()) {
+		auto devRepo = parent.lock()->getPage()->getSiteMap()->getParent()->getDeviceRepository();
+		device = devRepo->getDevice(deviceID);
+	}
+}
+
+void DeviceImpl::sendCommand(const libvariant::Variant& cmd) {
+	if (!device.expired() && commandTemplate.IsMap() && !commandValuePointer.empty()) {
+		std::cout << "DeviceImpl::sendCommand: " << libvariant::SerializeJSON(cmd) << std::endl;
+		auto msg = commandTemplate.Copy();
+		msg.SetPath(commandValuePointer, cmd);
+		device.lock()->sendCommand(msg);
+	}
+}

 } // namespace sitemaptemplate
 } // namespace sitemap
@@ -3,6 +3,8 @@

 // hos includes
 #include <hos/cosgi/service/sitemap/sitemap_template/SitemapTemplate.h>
+#include <hos/cosgi/service/devicerepository/DeviceRepositoryService.h>
+#include <hos/cosgi/service/Interface.h>
 #include "../SitemapServiceImpl.h"
 #include <hos/utils/SchemaLoader.h>
 // libvariant
@@ -15,6 +17,22 @@
 #include <atomic>


+namespace std {
+/**
+ * Specialization of std::hash for DeviceEventType.
+ *
+ * Required by std::map.
+ */
+template <>
+class hash <hos::cosgi::service::sitemap::sitemaptemplate::SitemapEventType>{
+public :
+	size_t operator()(const hos::cosgi::service::sitemap::sitemaptemplate::SitemapEventType& x) const {
+		return static_cast<size_t>(x);
+	}
+};
+} // namespace std
+
+
 namespace hos {
 namespace cosgi {
 namespace service {
@@ -35,20 +53,37 @@ class DeviceImpl;

 class SitemapTemplateImpl
 	: public virtual SitemapTemplate,
-	  public implementation::Object {
+	  public implementation::ObservableObject<SitemapEventType, SitemapEvent> {
 private:
 	SitemapServiceImpl& parent;
+	std::string name;
 	std::string title;
-	std::shared_ptr<PageImpl> rootPage;
+	std::map<std::string, std::shared_ptr<PageImpl>> pages;
+	std::map<size_t, std::shared_ptr<ElementImpl>> pageElements;
+	std::string rootPageName;
+	std::multimap<std::string, std::weak_ptr<DeviceImpl>> devices;

 public:
-	SitemapTemplateImpl(SitemapServiceImpl& parent, const std::string& title) : parent(parent), title(title) {}
+	SitemapTemplateImpl(SitemapServiceImpl& parent, const std::string& name, const std::string& title)
+		: parent(parent), name(name), title(title) {}

-	std::shared_ptr<PageImpl> createPage(const libvariant::Variant& param, PageImpl* parent = nullptr);
-	std::shared_ptr<DeviceImpl> createDevice(const libvariant::Variant& param);
+	virtual void notificationReceived(observable_type* o, const devicerepository::DeviceEventType& key, const devicerepository::DeviceEvent* e) noexcept override;
+
+	std::shared_ptr<PageImpl> addPage(const std::string& name, const libvariant::Variant& page);
+	bool setRootPageName(const std::string& name) noexcept;
+	std::shared_ptr<DeviceImpl> createDevice(const libvariant::Variant& param, const libvariant::Variant& commandTemplate, const std::string& commandValuePointer);
+	std::shared_ptr<ElementImpl> createElement(PageImpl& page, const libvariant::Variant& param, CompositeElementImpl* parent);

 	virtual SitemapService* getParent() noexcept override { return dynamic_cast<SitemapService*>(&parent); }
-	virtual std::weak_ptr<Page> getRootPage() noexcept override { return std::static_pointer_cast<Page>(rootPage); };
+	virtual size_t pageCount() noexcept override { return pages.size(); }
+	virtual std::weak_ptr<Page> getPage(const std::string& name) noexcept override;
+	virtual std::vector<std::weak_ptr<Page>> getPages(const std::string& name) noexcept override;
+	virtual std::weak_ptr<Page> getRootPage() noexcept override;
+	virtual const std::string& getRootPageName() noexcept override { return rootPageName; }
+	virtual std::weak_ptr<Element> getPageElement(size_t& uid) noexcept override;
+
+
+	virtual const std::string& getName() noexcept { return name; };

 	virtual libvariant::Variant renderSitemap() override;
 };
@@ -61,18 +96,18 @@ class PageImpl
 friend class AtomicElementImpl;
 private:
 	SitemapTemplateImpl& sitemap;
-	PageImpl* parent;
+	std::string name;
 	std::string title;
 	std::vector<std::shared_ptr<ElementImpl>> elements;

 public:
-	PageImpl(SitemapTemplateImpl& sitemap, const std::string& title, PageImpl* parent = nullptr)
-			: sitemap(sitemap), parent(parent), title(title) {}
+	PageImpl(SitemapTemplateImpl& sitemap, const std::string& name, const std::string& title)
+			: sitemap(sitemap), name(name), title(title) {}

 	virtual SitemapTemplate* getSiteMap() noexcept override { return static_cast<SitemapTemplate*>(&sitemap); }
-	virtual Page* getParent() noexcept override { return static_cast<Page*>(parent); }
+	virtual const std::string& getName() noexcept { return name; }

-	std::shared_ptr<ElementImpl> createElement(const libvariant::Variant& param, CompositeElementImpl* parent = nullptr);
+	std::shared_ptr<ElementImpl> addElement(const libvariant::Variant& param, CompositeElementImpl* parent = nullptr);

 	virtual size_t elementCount() noexcept override { return elements.size(); }
 	virtual std::weak_ptr<Element> getElement(size_t index) noexcept override
@@ -135,7 +170,7 @@ public:
 		CompositeElementImpl* parent = nullptr)
 			: ElementImpl(page, true, etype, typeStr, parent, label, icon) {}

-	std::shared_ptr<ElementImpl> createElement(const libvariant::Variant& param);
+	std::shared_ptr<ElementImpl> addElement(const libvariant::Variant& param);

 	virtual size_t elementCount() noexcept override { return elements.size(); }
 	virtual std::weak_ptr<Element> getElement(size_t index) noexcept override { return std::static_pointer_cast<Element>(elements.at(index)); }
@@ -153,7 +188,7 @@ protected:
 	std::string format;
 	std::shared_ptr<DeviceImpl> device;
 	libvariant::Variant additionalParams;
-	std::shared_ptr<PageImpl> linkedToPage;
+	std::string linkedPageName;

 	virtual libvariant::Variant _getDeviceValue();

@@ -163,12 +198,13 @@ public:
 		CompositeElementImpl* parent = nullptr)
 			: ElementImpl(page, false, etype, typeStr, parent, label, icon), format(format), device(device), additionalParams(additionalParams) {}

-	std::shared_ptr<PageImpl> createLinkedToPage(const libvariant::Variant& param);
+	bool setLinkedPage(const std::string& pagename) noexcept;

 	virtual const std::string& getFormat() noexcept override { return format; }
 	virtual std::weak_ptr<Device> getDevice() noexcept override;
 	virtual const libvariant::Variant& getAdditionalParams() noexcept override { return additionalParams; }
-	virtual std::weak_ptr<Page> getLinkedToPage() noexcept override { return linkedToPage; }
+	virtual std::weak_ptr<Page> getLinkedPage() noexcept override;
+	virtual const std::string& getLinkedPageName() noexcept override { return linkedPageName; }

 	virtual libvariant::Variant renderSitemap() override;
 };
@@ -218,15 +254,24 @@ private:
 	std::string deviceID;
 	std::weak_ptr<devicerepository::Device> device;
 	std::string pointer;
+	std::weak_ptr<ElementImpl> parent;
+	libvariant::Variant commandTemplate;
+	std::string commandValuePointer;

 public:
-	DeviceImpl(const std::string& deviceID, std::weak_ptr<devicerepository::Device> device, const std::string& pointer)
-			: deviceID(deviceID), device(device), pointer(pointer) {}
+	DeviceImpl(const std::string& deviceID, std::weak_ptr<devicerepository::Device> device, const std::string& pointer, const libvariant::Variant& commandTemplate, const std::string& commandValuePointer)
+			: deviceID(deviceID), device(device), pointer(pointer), commandTemplate(commandTemplate), commandValuePointer(commandValuePointer) {}
+
+	virtual std::weak_ptr<Element> getParent() noexcept override { return parent; }
+	void setParent(std::weak_ptr<ElementImpl> parent) noexcept { this->parent = parent; }
+	void resolveDevice() noexcept;
+	void setDevice(std::weak_ptr<devicerepository::Device> device) noexcept { this->device = device; }

 	virtual const std::string& getDeviceID() noexcept override { return deviceID; }
 	virtual std::weak_ptr<devicerepository::Device> getDevice() noexcept override { return device; }
 	virtual const std::string& getPointer() noexcept override { return pointer; }
 	virtual bool deviceExists() noexcept override { return !device.expired(); }
+	virtual void sendCommand(const libvariant::Variant& cmd) override;
 };


@@ -85,14 +85,23 @@ void SitemapHandler::__handleInfo(Poco::Net::HTTPServerRequest &req, Poco::Net::
 		for (auto s : sitemaps) {
 			result.Append(s);
 		}
+		Variant message = Variant::Map();
+		message["sitemaps"] = result;
+		auto dsm = service->getDefaultSitemap();
+		if (!dsm.expired()) {
+			message["default"] = dsm.lock()->getName();
+		}

-		handleResponse(req, resp, form, result);
+		handleResponse(req, resp, form, message);

 	// Single sitemap mode
 	} else {
 		// Get sitemap
 		std::string sitemapName = pathPieces[matchPieces.size()];
 		auto sitemap = service->getSitemap(sitemapName);
+		if (sitemap.expired() && sitemapName.compare("default") == 0) {
+			sitemap = service->getDefaultSitemap();
+		}
 		if (!sitemap.expired()) {
 			// Get path from url and append pointer parameter
 			std::stringstream path;
@@ -108,6 +117,15 @@ void SitemapHandler::__handleInfo(Poco::Net::HTTPServerRequest &req, Poco::Net::
 			}
 			// Render sitemap
 			Variant result = sitemap.lock()->renderSitemap();
+			std::string pathStr = path.str();
+			if (!pathStr.empty()) {
+				if (result.HasPath(pathStr)) {
+					result = result.GetPath(pathStr);
+				} else {
+					throw webserver::webresource::WebResourceHandlerException((boost::format("Unknown path \"%1%\" for sitemap \"%2%\".") % path % sitemapName).str(),
+							Poco::Net::HTTPResponse::HTTPStatus::HTTP_NOT_FOUND);
+				}
+			}
 			// Return device info
 			handleResponse(req, resp, form, result);
 		} else {
@@ -119,14 +137,131 @@ void SitemapHandler::__handleInfo(Poco::Net::HTTPServerRequest &req, Poco::Net::


 void SitemapHandler::__handleCommand(Poco::Net::HTTPServerRequest &req, Poco::Net::HTTPServerResponse &resp, SitemapAPIMethod method, Net::HTMLForm& form) {
-	throw webserver::webresource::WebResourceHandlerException("ToDo. Implement that shit.",
-			Poco::Net::HTTPResponse::HTTPStatus::HTTP_NOT_IMPLEMENTED);
+	std::vector<std::string> pathPieces, matchPieces;
+	matchUri.getPathSegments(matchPieces);
+	Poco::URI uri(req.getURI());
+	uri.getPathSegments(pathPieces);
+
+	// No sitemap given, error
+	if (pathPieces.size() <= matchPieces.size()) {
+		throw webserver::webresource::WebResourceHandlerException("Missing sitemap.",
+				Poco::Net::HTTPResponse::HTTPStatus::HTTP_BAD_REQUEST);
+	}
+
+	// Get sitemap and do stuff
+	std::string sitemapName = pathPieces[matchPieces.size()];
+	std::weak_ptr<sitemaptemplate::SitemapTemplate> sitemap = service->getSitemap(sitemapName);
+	if (!sitemap.expired()) {
+
+		Variant result;
+		std::string msg;
+		if (form.has("value")) {
+			msg = form.get("value");
+		}
+		if (!msg.empty()) {
+			result = libvariant::DeserializeYAML(msg);
+			if (result.Contains("eventtype")) {
+				auto eventtype = result["eventtype"].AsString();
+				if (eventtype == "sitemap_element_command") {
+					auto uid = result["uid"].AsUnsigned();
+					auto value = result["value"];
+					auto pe = sitemap.lock()->getPageElement(uid);
+					if (!pe.expired()) {
+						auto spe = pe.lock();
+						if (!spe->isComposite()) {
+							auto ae = std::dynamic_pointer_cast<sitemaptemplate::AtomicElement>(spe);
+							auto dev = ae->getDevice();
+							if (!dev.expired()) {
+								dev.lock()->sendCommand(value);
+								handleResponse(req, resp, form, std::string("OK: Command executed"));
+							} else {
+								throw webserver::webresource::WebResourceHandlerException("No device associated with element.",
+									Poco::Net::HTTPResponse::HTTPStatus::HTTP_INTERNAL_SERVER_ERROR);
+							}
+						} else {
+							throw webserver::webresource::WebResourceHandlerException("Cannot send a command to a composite element.",
+								Poco::Net::HTTPResponse::HTTPStatus::HTTP_BAD_REQUEST);
+						}
+					} else {
+						throw webserver::webresource::WebResourceHandlerException((boost::format("Couldn't find element uid \"%1%\"") % uid).str(),
+							Poco::Net::HTTPResponse::HTTPStatus::HTTP_NOT_FOUND);
+					}
+				} else  {
+					throw webserver::webresource::WebResourceHandlerException((boost::format("Unknown eventtype \"%1%\"") % eventtype).str(),
+						Poco::Net::HTTPResponse::HTTPStatus::HTTP_BAD_REQUEST);
+				}
+			} else  {
+				throw webserver::webresource::WebResourceHandlerException("Missing eventtype.",
+					Poco::Net::HTTPResponse::HTTPStatus::HTTP_BAD_REQUEST);
+			}
+		} else {
+			throw webserver::webresource::WebResourceHandlerException("Missing msg.",
+				Poco::Net::HTTPResponse::HTTPStatus::HTTP_BAD_REQUEST);
+		}
+	} else {
+		throw webserver::webresource::WebResourceHandlerException((boost::format("Could not find sitemap \"%1%\"") % sitemapName).str(),
+				Poco::Net::HTTPResponse::HTTPStatus::HTTP_NOT_FOUND);
+	}
 }


 void SitemapHandler::__handleEvent(Poco::Net::HTTPServerRequest &req, Poco::Net::HTTPServerResponse &resp, Net::HTMLForm& form, bool websocket) {
-	throw webserver::webresource::WebResourceHandlerException("ToDo. Implement that shit.",
-			Poco::Net::HTTPResponse::HTTPStatus::HTTP_NOT_IMPLEMENTED);
+	std::vector<std::string> pathPieces, matchPieces;
+	matchUri.getPathSegments(matchPieces);
+	Poco::URI uri(req.getURI());
+	uri.getPathSegments(pathPieces);
+
+	// No sitemap given, error
+	if (pathPieces.size() <= matchPieces.size()) {
+		throw webserver::webresource::WebResourceHandlerException("Missing sitemap.",
+				Poco::Net::HTTPResponse::HTTPStatus::HTTP_BAD_REQUEST);
+	}
+
+	// Get sitemap and do stuff
+	std::string sitemapName = pathPieces[matchPieces.size()];
+	std::weak_ptr<sitemaptemplate::SitemapTemplate> sitemap = service->getSitemap(sitemapName);
+	if (!sitemap.expired()) {
+		// Get client ID
+		std::string clientID;
+		if (form.has("clientid")) {
+			clientID = form.get("clientid");
+		} else if (req.has("Client-Id")) {
+			clientID = req.get("Client-Id");
+		} else if (req.has("X-Client-Id")) {
+			clientID = req.get("X-Client-Id");
+		}
+		// Get path from url and append pointer parameter
+		std::stringstream path;
+		for (int i = matchPieces.size() + 2; i < pathPieces.size(); i++) {
+			path << "/" << pathPieces[i];
+		}
+		std::string pointer;
+		if (getPointerParameter(pointer, form)) {
+			if (pointer.size() > 0 && pointer[0] != '/') {
+				path << "/";
+			}
+			path << pointer;
+		}
+		// Get event queue
+		auto eventQueue = parent->getEventQueue(clientID, service);
+		if (!eventQueue->setHandler(this, &req, &resp)) {
+			throw webserver::webresource::WebResourceHandlerException((boost::format("Client id \"%1%\" already in use.") % clientID).str(),
+					Poco::Net::HTTPResponse::HTTPStatus::HTTP_BAD_REQUEST);
+		}
+		std::cout << "Got EventQueue \"" << eventQueue->clientID << "\"" << std::endl;
+		eventQueue->checkRegistration(sitemaptemplate::SitemapEventType::ALL_EVENTS, sitemap.lock().get());
+		if (websocket) {
+			__handleEventWebSocket(req, resp, form, eventQueue.get(), parent);
+		} else {
+			__handleEventLongPolling(req, resp, form, eventQueue.get(), parent);
+		}
+		eventQueue->unsetHandler();
+	} else {
+		throw webserver::webresource::WebResourceHandlerException((boost::format("Could not find sitemap \"%1%\"") % sitemapName).str(),
+				Poco::Net::HTTPResponse::HTTPStatus::HTTP_NOT_FOUND);
+	}
+	/*throw webserver::webresource::WebResourceHandlerException("ToDo. Implement that shit.",
+			Poco::Net::HTTPResponse::HTTPStatus::HTTP_NOT_IMPLEMENTED);*/
 }


@@ -160,6 +295,62 @@ SitemapAPIMethod SitemapHandler::getSitemapAPIMethod(Net::HTTPServerRequest &req



+void SitemapEventQueue::checkRegistration(sitemaptemplate::SitemapEventType eventType, sitemaptemplate::SitemapTemplate* sitemap) {
+	if (!registeredToEvent || eventType != this->eventType || sitemap != this->sitemap) {
+		unregisterEvents();
+		registerEvents(eventType, sitemap);
+	}
+}
+
+void SitemapEventQueue::registerEvents(sitemaptemplate::SitemapEventType eventType, sitemaptemplate::SitemapTemplate* sitemap) {
+    std::lock_guard<std::mutex> lock(_mutex);
+	if (!registeredToEvent) {
+		std::cout << "SitemapEventQueue::registerEvents" << std::endl;
+		sitemap->addObserver(eventType, this);
+		this->sitemap = sitemap;
+		this->eventType = eventType;
+		registeredToEvent = true;
+	}
+}
+
+void SitemapEventQueue::unregisterEvents() {
+    std::lock_guard<std::mutex> lock(_mutex);
+	if (registeredToEvent) {
+		std::cout << "SitemapEventQueue::unregisterEvents" << std::endl;
+		if (sitemap) {
+			sitemap->deleteObserver(this);
+		}
+		registeredToEvent = false;
+	}
+}
+
+void SitemapEventQueue::notificationReceived( 	interface::Observer<sitemaptemplate::SitemapEventType, sitemaptemplate::SitemapEvent>::observable_type* o,
+												const sitemaptemplate::SitemapEventType& key,
+												const sitemaptemplate::SitemapEvent* e)  noexcept {
+	Variant event;
+	switch (key) {
+		case sitemaptemplate::SitemapEventType::SITEMAP_INVALIDATED:
+			event["eventtype"] = "sitemap_invalidated";
+			break;
+		case sitemaptemplate::SitemapEventType::SITEMAP_ELEMENT_CHANGED:
+			{
+				const sitemaptemplate::SitemapElementChangedEvent* event2 = static_cast<const sitemaptemplate::SitemapElementChangedEvent*>(e);
+				event["eventtype"] = "sitemap_element_changed";
+				auto elements = Variant::List();
+				for (auto el : event2->elements) {
+					elements.push_back(el.lock()->renderSitemap());
+				}
+				event["elements"] = elements;
+			}
+			break;
+		default:
+			break;
+	}
+	if (!event.IsNull()) {
+		pushEvent(event);
+	}
+}
+
 } // namespace webresource
 } // namespace sitemap
 } // namespace service
@@ -6,6 +6,7 @@
 #include <hos/cosgi/service/webserver/WebServerService.h>
 #include <hos/cosgi/service/webserver/webresource/WebResourceHandlerImpl.h>
 #include <hos/cosgi/service/sitemap/SitemapService.h>
+#include <hos/cosgi/service/sitemap/sitemap_template/SitemapTemplate.h>
 #include <hos/utils/FunctionTable.h>
 #include <Poco/Net/HTTPRequestHandler.h>
 #include <Variant/Variant.h>
@@ -40,8 +41,42 @@ enum class SitemapAPIMethod {
 };


+typedef webserver::webresource::WebResourceEventQueue<
+	interface::Observer<sitemaptemplate::SitemapEventType, sitemaptemplate::SitemapEvent>,
+	SitemapHandlerFactory,
+	SitemapHandler
+> SitemapEventQueueBase;
+
+class SitemapEventQueue
+	: public SitemapEventQueueBase {
+public:
+	sitemaptemplate::SitemapEventType eventType = sitemaptemplate::SitemapEventType::ALL_EVENTS;
+	SitemapService* const sitemapService;
+	sitemaptemplate::SitemapTemplate* sitemap = nullptr;
+
+	SitemapEventQueue( 	const std::string& clientID,
+						SitemapHandlerFactory* handlerFactory,
+						SitemapService* sitemapService )
+			: WebResourceEventQueue(clientID, handlerFactory), sitemapService(sitemapService) {}
+	virtual ~SitemapEventQueue() {
+		unregisterEvents();
+	}
+
+	void checkRegistration(sitemaptemplate::SitemapEventType eventType, sitemaptemplate::SitemapTemplate* sitemap);
+	void registerEvents(sitemaptemplate::SitemapEventType eventType, sitemaptemplate::SitemapTemplate* sitemap = nullptr);
+	void unregisterEvents();
+
+	virtual void notificationReceived( 	interface::Observer<sitemaptemplate::SitemapEventType, sitemaptemplate::SitemapEvent>::observable_type* o,
+										const sitemaptemplate::SitemapEventType& key,
+										const sitemaptemplate::SitemapEvent* e) noexcept override;
+};
+
+
+
+
+
 class SitemapHandlerFactory
-	: public webserver::webresource::WebResourceHandlerFactoryImpl<SitemapHandlerFactory, false> {
+	: public webserver::webresource::WebResourceHandlerFactoryImpl<SitemapHandlerFactory, false, SitemapEventQueue> {
 private:
 	SitemapService* service;

@@ -0,0 +1,68 @@
+define([
+	"dojo/_base/config",
+	'dojo/_base/declare',
+	"dojo/Deferred",
+	"dojo/dom",
+	"dojo/dom-construct",
+	"dijit/layout/ContentPane",
+	"hos/sitemap/PageElementFactory"
+], function(config, declare, Deferred, dom, domConstruct, ContentPane, PageElementFactory) {
+
+	/*
+	 * Class representing a page.
+	 */
+	var PageClass = declare(null, {
+		
+		/*
+		 * constructor.
+		 * 
+		 * sitemap: parent sitemap.
+		 * 
+		 * name: page name.
+		 * 
+		 * data: page json object received from server
+		 */
+		constructor: function(/*hos/sitemap/Sitemap*/ sitemap, /*string*/ name, /*json object*/ data) {
+			this.sitemap = sitemap;
+			this.name = name;
+			this.title = data["title"];
+			this.elements = [];
+			var _this = this;
+			data["elements"].forEach(function(data) {
+				var element = PageElementFactory.createPageElement(_this, data);
+				_this.elements.push(element);
+				_this.sitemap.pageElements[element.uid] = element;
+			});
+		},
+		
+		/* returns string representation for debugging. */
+		toString: function() {
+			var str = "Page <b>\"" + this.name + "\"<b> {<br> \n";
+			this.elements.forEach(function(e) {
+				str += e.toString() + "<br> \n";
+			});
+			str += "} ";
+			return str;
+		},
+		
+		/*
+		 * Build the DOM.
+		 */
+		buildDom: function() {
+			var nodes = []
+			this.elements.forEach(function(e) {
+				nodes.push(e.domNode);
+			});
+			this.widget = new ContentPane({
+				title: this.title,
+				id: this.name,
+				content: nodes,
+		        style: "height: 100%; width: 100%;"
+			});
+			this.domNode = this.widget.domNode;
+		}
+		
+	});
+	
+	return PageClass;
+});
@@ -0,0 +1,56 @@
+define([
+	"dojo/_base/config",
+	'dojo/_base/declare',
+	"dojo/Deferred",
+	"dojo/dom",
+	"dojo/dom-construct",
+	"hos/sitemap/pageelements/FrameElement",
+	"hos/sitemap/pageelements/TextElement",
+	"hos/sitemap/pageelements/SwitchElement",
+	"hos/sitemap/pageelements/SliderElement",
+	"hos/sitemap/pageelements/ErrorElement",
+], function(
+	config, 
+	declare, 
+	Deferred, 
+	dom, 
+	domConstruct, 
+	FrameElement,
+	TextElement,
+	SwitchElement,
+	SliderElement,
+	ErrorElement
+) {
+	
+	/*
+	 * Class representing a page element factory.
+	 */
+	var ElementFactoryClass = declare(null, {
+		
+		/*
+		 * Creates and returns a page element.
+		 */
+		createPageElement: function(/*hos/sitemap/Page*/ page, /*json object*/ data, /*hos/sitemap/pageelements/CompositeElement*/ parent) {
+			if (typeof(parent)==='undefined') parent = null;
+			var element = null;
+			if (data["type"] == "sitemap/sitemap#/definitions/frame_element") {
+				element = new FrameElement(page, data, this, parent);
+			} else if (data["type"] == "sitemap/sitemap#/definitions/text_element") {
+				element = new TextElement(page, data, this, parent);
+			} else if (data["type"] == "sitemap/sitemap#/definitions/switch_element") {
+				element = new SwitchElement(page, data, this, parent);
+			} else if (data["type"] == "sitemap/sitemap#/definitions/slider_element") {
+				element = new SliderElement(page, data, this, parent);
+			} else {
+				element = new ErrorElement(page, data, this, parent);
+			}
+			element.buildDom();
+			return element;
+		}
+	
+	});
+	
+	/* Create and return factory instance. */
+	var factory = new ElementFactoryClass();
+	return factory;
+});
@@ -0,0 +1,213 @@
+define([
+	"dojo/_base/config",
+	'dojo/_base/declare',
+	'dojo/_base/lang',
+	"dojo/dom",
+	"dojo/dom-construct",
+	"dojo/Deferred",
+	"dojox/uuid/generateRandomUuid",
+	"hos/sitemap/Page",
+	"hos/sitemap/widgets/SitemapWidget",
+	"dojox/socket",
+	"dojox/socket/Reconnect",
+	"dojo/request/xhr"
+], function(
+	config, 
+	declare, 
+	lang,  
+	dom, 
+	domConstruct, 
+	Deferred, 
+	generateRandomUuid, 
+	Page, 
+	SitemapWidget, 
+	Socket, 
+	Reconnect, 
+	xhr
+) {
+
+	/*
+	 * Class representing a sitemap.
+	 */
+	var SitemapClass = declare(null, {
+		
+		/* 
+		 * Constructor.
+		 * 
+		 * api: parent API.
+		 * 
+		 * name: sitemap name.
+		 * 
+		 * data: sitemap json object received from server
+		 */
+		constructor: function(/*hos.sitemap.SitemapAPI*/ api, /*string*/ name, /*json object*/ data) {
+			this.api = api;
+			this.name = name;
+			// parse json data
+			this.rootPageName = data["rootpage"];
+			this.title = data["title"];
+			// Create pages
+			this.pages = {}
+			var _pages = data["pages"];
+			for (var _pageName in _pages) {
+				if (_pages.hasOwnProperty(_pageName)) {
+					var _page = new Page(this, _pageName, _pages[_pageName]);
+					this.pages[_pageName] = _page
+				}
+			}
+			this.buildDom();
+		},
+		
+		/* 
+		 * Dictionary containing all page elements.
+		 */
+		pageElements: {},
+		
+		/* 
+		 * Stack containing name of visited pages.
+		 * Needed for bread crumbs and back button.
+		 */
+		pageNameStack: [],
+		
+		/* returns string representation for debugging. */
+		toString: function() {
+			var str = "Sitemap <b>\"" + this.name + "\"<b> {<br> \n";
+			for (var pageName in this.pages) {
+				str += this.pages[pageName].toString() + "<br> \n";
+			}
+			str += "} ";
+			return str;
+		},
+		
+		/*
+		 * Build the DOM.
+		 */
+		buildDom: function() {
+			this.widget = new SitemapWidget({sitemap: this});
+			for (var pageName in this.pages) {
+				var page = this.pages[pageName];
+				page.buildDom();
+				this.widget.stackContainer.addChild(page.widget);
+			}
+			this.domNode = this.widget.domNode;
+		},
+		
+		/* 
+		 * Startup function.
+		 */
+		startup: function() {
+			this.widget.startup();
+			this.goToRootPage();
+			this.enableUpdates();
+		},
+		
+		/*
+		 * Update the bread crumbs in the ui.
+		 */
+		updateBreadCrumbs: function() {
+			var str = "> " + this.rootPageName;
+			this.pageNameStack.forEach(function(e) {
+				str += " > " + e;
+			});
+			this.widget.setBreadCrumbs(str);
+		},
+		
+		/*
+		 * Go to page with given name.
+		 */
+		goToPage: function(/*string*/ name) {
+			this.pageNameStack.push(name);
+			this.widget.stackContainer.selectChild(name, true);
+			this.updateBreadCrumbs();
+		},
+		
+		/*
+		 * Go to root page.
+		 */
+		goToRootPage: function() {
+			this.pageNameStack = [];
+			this.widget.stackContainer.selectChild(this.rootPageName);
+			this.updateBreadCrumbs();
+		},
+		
+		/*
+		 * Go one page back.
+		 */
+		goBack: function() {
+			if (this.pageNameStack.length > 0) {
+				this.pageNameStack.pop();
+				if (this.pageNameStack.length > 0) {
+					this.goToPage(this.pageNameStack.pop());
+				} else {
+					this.goToRootPage();
+				}
+				return true;
+			} else {
+				return false;
+			}
+		},
+		
+		/*
+		 * Connect to server and listen for updates.
+		 */
+		enableUpdates: function() {
+			this._updateSocketOpened = false;
+			this._updateSocketClientId = generateRandomUuid();
+			this._updateSocket = Reconnect(new Socket({ 
+				url: config.hos.sitemapUrl + "/" + this.name + '?onevent=all&clientid=' + this._updateSocketClientId,
+				headers: {
+					"On-Event": "changes",
+					/*"Connection-Timeout": 60000,*/
+					"Client-Id": 1234
+				},
+				transport: xhr.post 
+			}),{});
+			this._updateSocket.on("open", lang.hitch(this, function(event){
+				this._socketOpened = true;
+				console.log("Socket Opened ", event.message);
+			}));
+			this._updateSocket.on("close", lang.hitch(this, function(event){
+				this._socketOpened = false;
+				console.log("Socket Closed ", event.message);
+			}));
+			this._updateSocket.on("error", lang.hitch(this, function(event){
+				this._socketOpened = false;
+				console.log("Socket Error ", event.message);
+			}));
+			this._updateSocket.on("message", lang.hitch(this, function(event) {
+				var data = JSON.parse(event.data);
+				console.log("Message: " + event);
+				//console.log("Message: " + event.data);
+				if (data && data["eventtype"] == "sitemap_element_changed") {
+					var elements = data["elements"];
+					elements.forEach(lang.hitch(this, function(e) {
+						var uid = e["uid"];
+						if (uid in this.pageElements) {
+							var el = this.pageElements[uid];
+							el.updateData(e);
+						}
+					}));
+				}
+			}));
+		},
+		
+		/*
+		 * Send command.
+		 */
+		sendPageElementCommand: function(uid, value) {
+			if (this._updateSocket) {
+				var msg = {eventtype: "sitemap_element_command", uid: uid, value: value};
+				xhr.post(config.hos.sitemapUrl + "/" + this.name, {
+					data: {method: 'command', value: JSON.stringify(msg)}
+				}).then(function(data){
+					console.log("sendPageElementCommand ok: " + data)
+				}, function(err){
+					console.log("sendPageElementCommand error: " + err)
+				});
+			}
+		}
+		
+	});
+	
+	return SitemapClass;
+});
@@ -0,0 +1,98 @@
+define([
+	"dojo/_base/config",
+	'dojo/_base/declare',
+	"dojo/request/xhr",
+	"dojo/Deferred",
+	"hos/sitemap/Sitemap"
+], function(config, declare, xhr, Deferred, Sitemap) {
+	
+	/*
+	 * Class representing the sitemap API.
+	 */
+	var ApiClass = declare(null, {
+		
+		/* 
+		 * Constructor.
+		 */
+		constructor: function(/*string*/ baseUrl) {
+			this.baseUrl = baseUrl;
+		},
+		
+		/* 
+		 * Returns name of default sitemap. 
+		 * 
+		 * returns: Promise(string)
+		 */
+		getDefaultSitemapName: function() {
+			var deferred = new Deferred();
+			xhr.get(this.baseUrl, {
+				handleAs: "json"
+			}).then(function(data){
+				deferred.resolve(data["default"]);
+			}, function(err){
+				deferred.reject(err);
+			});
+			return deferred;
+		},
+		
+		/* 
+		 * Returns an array containing the names of all available sitemaps. 
+		 * 
+		 * returns: Promise(array(string))
+		 */
+		getSitemapNames: function() {
+			var deferred = new Deferred();
+			xhr.get(this.baseUrl, {
+				handleAs: "json"
+			}).then(function(data){
+				deferred.resolve(data["sitemaps"]);
+			}, function(err){
+				deferred.reject(err);
+			});
+			return deferred;
+		},
+		
+		/* 
+		 * Returns the sitemap with given name. 
+		 * 
+		 * returns: Promise(hos.sitemap.Sitemap)
+		 */
+		getSitemap: function(/*string*/ name) {
+			var deferred = new Deferred();
+			var _this = this
+			xhr.get(this.baseUrl + "/" + name, {
+				handleAs: "json"
+			}).then(function(data){
+				var sitemap = new Sitemap(_this, name, data)
+				deferred.resolve(sitemap);
+			}, function(err){
+				deferred.reject(err);
+			});
+			return deferred;
+		},
+		
+		/* 
+		 * Returns the default sitemap. 
+		 * 
+		 * returns: Promise(hos.sitemap.Sitemap)
+		 */
+		getDefaultSitemap: function() {
+			var deferred = new Deferred();
+			var _this = this
+			this.getDefaultSitemapName().then(function(name){
+				_this.getSitemap(name).then(function(sitemap){
+					deferred.resolve(sitemap);
+				}, function(err){
+					deferred.reject(err);
+				});
+			}, function(err){
+				deferred.reject(err);
+			});
+			return deferred;
+		}
+	});
+	
+	/* Create and returns API instance. */
+	var api = new ApiClass(config.hos.sitemapUrl);
+	return api;
+});
@@ -0,0 +1,47 @@
+define([
+	"dojo/_base/config",
+	'dojo/_base/declare',
+	"dojo/Deferred",
+	"dojo/dom",
+	"dojo/dom-construct",
+	"hos/sitemap/pageelements/ElementBase"
+], function(config, declare, Deferred, dom, domConstruct, ElementBase) {
+	
+	return declare([ElementBase], {
+		
+		/*
+		 * constructor.
+		 * 
+		 * page: parent page.
+		 * 
+		 * data: page element json object received from server
+		 * 
+		 * factory: reference to page element factory
+		 * 
+		 * parent: parent page element
+		 */
+		constructor: function(/*hos.sitemap.Page*/ page, /*json object*/ data, /*hos.sitemap.PageElementFactory*/ factory, /*hos/sitemap/pageelements/CompositeElement*/ parent) {
+			this.linkedPageName = data["linkedPage"];
+			this.value = data["value"];
+		},
+		
+		/* 
+		 * Go to linked page.
+		 */
+		goToLinkedPage: function() {
+			if (this.linkedPageName) {
+				this.page.sitemap.goToPage(this.linkedPageName);
+			}
+		},
+		
+		/*
+		 * Update data.
+		 */
+		updateData: function(data) {
+			this.inherited(arguments);
+			this.value = data["value"];
+		}
+	
+	});
+
+});
@@ -0,0 +1,34 @@
+define([
+	"dojo/_base/config",
+	'dojo/_base/declare',
+	"dojo/Deferred",
+	"dojo/dom",
+	"dojo/dom-construct",
+	"hos/sitemap/pageelements/ElementBase"
+], function(config, declare, Deferred, dom, domConstruct, ElementBase) {
+	
+	return declare([ElementBase], {
+		
+		/*
+		 * constructor.
+		 * 
+		 * page: parent page.
+		 * 
+		 * data: page element json object received from server
+		 * 
+		 * factory: reference to page element factory
+		 * 
+		 * parent: parent page element
+		 */
+		constructor: function(/*hos.sitemap.Page*/ page, /*json object*/ data, /*hos.sitemap.PageElementFactory*/ factory, /*hos/sitemap/pageelements/CompositeElement*/ parent) {
+			this.elements = []
+			var _this = this;
+			data["elements"].forEach(function(data) {
+				var element = factory.createPageElement(page, data, _this)
+				_this.page.sitemap.pageElements[element.uid] = element;
+				_this.elements.push(element)
+			});
+		}
+	});
+
+});
@@ -0,0 +1,58 @@
+define([
+	"dojo/_base/config",
+	'dojo/_base/declare',
+	"dojo/Deferred",
+	"dojo/dom",
+	"dojo/dom-construct"
+], function(config, declare, Deferred, dom, domConstruct) {
+	
+	return declare(null, {
+		
+		/*
+		 * constructor.
+		 * 
+		 * page: parent page.
+		 * 
+		 * data: page element json object received from server
+		 * 
+		 * factory: reference to page element factory
+		 * 
+		 * parent: parent page element
+		 */
+		constructor: function(/*hos.sitemap.Page*/ page, /*json object*/ data, /*hos.sitemap.PageElementFactory*/ factory, /*hos/sitemap/pageelements/CompositeElement*/ parent) {
+			this.page = page;
+			this.parent = parent;
+			this.factory = factory;
+			this.uid = data["uid"];
+			this.type = data["type"];
+			this.icon = data["icon"];
+			this.label = data["label"];
+		},
+		
+		/* returns string representation for debugging. */
+		toString: function() {
+			return " <b>**Unknown(" + this.uid + ")**</b> ";
+		},
+		
+		/*
+		 * Build the DOM.
+		 */
+		buildDom: function() {
+			this.domNode = domConstruct.toDom(this.toString());
+		},
+		
+		/*
+		 * Update data.
+		 */
+		updateData: function(data) {
+			this.label = data["label"];
+		},
+
+		/*
+		 * Update DOM.
+		 */
+		updateDom: function() {
+		}
+	});
+	
+});
@@ -0,0 +1,20 @@
+define([
+	"dojo/_base/config",
+	'dojo/_base/declare',
+	"dojo/Deferred",
+	"dojo/dom",
+	"dojo/dom-construct",
+	"hos/sitemap/pageelements/AtomicElement"
+], function(config, declare, Deferred, dom, domConstruct, AtomicElement) {
+	
+	return declare([AtomicElement], {
+		
+		/* returns string representation for debugging. */
+		toString: function() {
+			var str = " <b>ErrorElement (" + this.uid + ")</b> ";
+			return str;
+		}
+	
+	});
+	
+});
@@ -0,0 +1,40 @@
+define([
+	"dojo/_base/config",
+	'dojo/_base/declare',
+	"dojo/Deferred",
+	"dojo/dom",
+	"dojo/dom-construct",
+	"hos/sitemap/pageelements/CompositeElement",
+	"dijit/TitlePane"
+], function(config, declare, Deferred, dom, domConstruct, CompositeElement, TitlePane) {
+	
+	return declare([CompositeElement], {
+
+		/* returns string representation for debugging. */
+		toString: function() {
+			var str = " <b>FrameElement (" + this.uid + ")</b>{<br> \n";
+			this.elements.forEach(function(e) {
+				str += e.toString() + "<br> \n";
+			});
+			str += "} ";
+			return str;
+		},
+		
+		/*
+		 * Build the DOM.
+		 */
+		buildDom: function() {
+			var nodes = []
+			this.elements.forEach(function(e) {
+				nodes.push(e.domNode);
+			});
+			this.widget = new TitlePane({
+				title:this.label, 
+				content:nodes
+			});
+			this.domNode = this.widget.domNode
+		}
+		
+	});
+	
+});
@@ -0,0 +1,100 @@
+define([
+	"dojo/_base/config",
+	'dojo/_base/declare',
+	'dojo/_base/lang',
+	"dojo/Deferred",
+	"dojo/dom",
+	"dojo/dom-construct",
+	"hos/sitemap/pageelements/AtomicElement",
+	"hos/sitemap/pageelements/widgets/ElementWidget",
+	"dojox/mobile/Slider"
+], function(config, declare, lang, Deferred, dom, domConstruct, AtomicElement, ElementWidget, Slider) {
+	
+	return declare([AtomicElement], {
+		
+		/*
+		 * constructor.
+		 * 
+		 * page: parent page.
+		 * 
+		 * data: page element json object received from server
+		 * 
+		 * factory: reference to page element factory
+		 * 
+		 * parent: parent page element
+		 */
+		constructor: function(/*hos.sitemap.Page*/ page, /*json object*/ data, /*hos.sitemap.PageElementFactory*/ factory, /*hos/sitemap/pageelements/CompositeElement*/ parent) {
+			this.min = data["min"];
+			this.max = data["max"];
+		},
+
+		/* returns string representation for debugging. */
+		toString: function() {
+			var str = " <b>SliderElement (" + this.uid + ")</b> ";
+			return str;
+		},
+		
+		/* 
+		 * Set Slider value.
+		 */
+		setSliderValue: function(value) {
+			this.value = value/100;
+			this.page.sitemap.sendPageElementCommand(this.uid, this.value);
+		},
+		
+		/*
+		 * Build the DOM.
+		 */
+		buildDom: function() {
+			this.widget = new ElementWidget({baseClass: "SliderElementWidget"});
+			/*this.sliderWidget = HorizontalSlider({
+				minimum: this.min,
+				maximum: this.max,
+				value: this.value,
+		        onChange: lang.hitch(this, this.setSliderValue)
+			});*/
+			this.sliderWidget = Slider({
+				minimum: this.min*100,
+				maximum: this.max*100,
+				value: this.value*100,
+				style: "width: 95%;",
+		        onChange: lang.hitch(this, this.setSliderValue)
+			});
+			this.widget.setValue(this.sliderWidget.domNode);
+			this.updateDom();
+			this.domNode = this.widget.domNode;
+		},
+		
+		/*
+		 * Update data.
+		 */
+		updateData: function(data) {
+			this.inherited(arguments);
+			this.updateDom();
+		},
+
+		/*
+		 * Update DOM.
+		 */
+		updateDom: function() {
+			if (typeof(this.linkedPageName) != "undefined") {
+				var tmp = domConstruct.create("a",{
+					href: "javascript:void(0)",
+					innerHTML: "<b>" + this.label + "</b>",
+					onclick: lang.hitch(this, this.goToLinkedPage)
+				});
+				this.widget.setLabel(tmp);
+				var tmp2 = domConstruct.create("div",{
+					innerHTML: " &gt;&gt; ",
+					onclick: lang.hitch(this, this.goToLinkedPage)
+				});
+				this.widget.setLink(tmp2);
+			} else {
+				this.widget.setLabel(domConstruct.toDom("<b>" + this.label + "</b>"));
+			}
+			this.sliderWidget.set("value", this.value*100);
+		}
+		
+	});
+	
+});
@@ -0,0 +1,84 @@
+define([
+	"dojo/_base/config",
+	"dojo/_base/lang",
+	"dojo/_base/declare",
+	"dojo/Deferred",
+	"dojo/dom",
+	"dojo/dom-construct",
+	"hos/sitemap/pageelements/AtomicElement",
+	"hos/sitemap/pageelements/widgets/ElementWidget",
+	"dojox/mobile/Switch"
+], function(config, lang, declare, Deferred, dom, domConstruct, AtomicElement, ElementWidget, Switch) {
+	
+	return declare([AtomicElement], {
+
+		/* returns string representation for debugging. */
+		toString: function() {
+			var str = " <b>SwitchElement (" + this.uid + ")</b> ";
+			return str;
+		},
+		
+		/*
+		 * Build the DOM.
+		 */
+		buildDom: function() {
+			this.widget = new ElementWidget({baseClass: "SwitchElementWidget"});
+			this.buttonWidget = Switch({
+			});
+			this.buttonWidget.on("stateChanged", lang.hitch(this, this.setSwitch));
+			this.widget.setValue(this.buttonWidget.domNode);
+			this.updateDom();
+			this.domNode = this.widget.domNode;
+		},
+		
+		/* 
+		 * Toggle switch.
+		 */
+		toggleSwitch: function() {
+			this.value = !this.value;
+			this.updateDom();
+			this.page.sitemap.sendPageElementCommand(this.uid, this.value);
+		},
+		
+		/* 
+		 * Set switch.
+		 */
+		setSwitch: function(value) {
+			this.value = (value == "on");
+			this.updateDom();
+			this.page.sitemap.sendPageElementCommand(this.uid, this.value);
+		},
+		
+		/*
+		 * Update data.
+		 */
+		updateData: function(data) {
+			this.inherited(arguments);
+			this.updateDom();
+		},
+
+		/*
+		 * Update DOM.
+		 */
+		updateDom: function() {
+			if (typeof(this.linkedPageName) != "undefined") {
+				var tmp = domConstruct.create("a",{
+					href: "javascript:void(0)",
+					innerHTML: "<b>" + this.label + "</b>",
+					onclick: lang.hitch(this, this.goToLinkedPage)
+				});
+				this.widget.setLabel(tmp);
+				var tmp2 = domConstruct.create("div",{
+					innerHTML: " &gt;&gt; ",
+					onclick: lang.hitch(this, this.goToLinkedPage)
+				});
+				this.widget.setLink(tmp2);
+			} else {
+				this.widget.setLabel(domConstruct.toDom("<b>" + this.label + "</b>"));
+			}
+			this.buttonWidget.set("value", this.value ? "on" : "off");
+		}
+		
+	});
+	
+});
@@ -0,0 +1,61 @@
+define([
+	"dojo/_base/config",
+	'dojo/_base/declare',
+	"dojo/_base/lang",
+	"dojo/Deferred",
+	"dojo/dom",
+	"dojo/dom-construct",
+	"hos/sitemap/pageelements/AtomicElement",
+	"hos/sitemap/pageelements/widgets/ElementWidget"
+], function(config, declare, lang, Deferred, dom, domConstruct, AtomicElement, ElementWidget) {
+
+	return declare([AtomicElement], {
+
+		/* returns string representation for debugging. */
+		toString: function() {
+			var str = " <b>TextElement (" + this.uid + ")</b> ";
+			return str;
+		},
+		
+		/*
+		 * Build the DOM.
+		 */
+		buildDom: function() {
+			this.widget= new ElementWidget({baseClass: "TextElementWidget"});
+			this.updateDom();
+			this.domNode = this.widget.domNode;
+		},
+		
+		/*
+		 * Update data.
+		 */
+		updateData: function(data) {
+			this.inherited(arguments);
+			this.updateDom();
+		},
+
+		/*
+		 * Update DOM.
+		 */
+		updateDom: function() {
+			if (typeof(this.linkedPageName) != "undefined") {
+				var tmp = domConstruct.create("a",{
+					href: "javascript:void(0)",
+					innerHTML: "<b>" + this.label + "</b>",
+					onclick: lang.hitch(this, this.goToLinkedPage)
+				});
+				this.widget.setLabel(tmp);
+				var tmp2 = domConstruct.create("div",{
+					innerHTML: " &gt;&gt; ",
+					onclick: lang.hitch(this, this.goToLinkedPage)
+				});
+				this.widget.setLink(tmp2);
+			} else {
+				this.widget.setLabel(domConstruct.toDom("<b>" + this.label + "</b>"));
+			}
+			this.widget.setValue(domConstruct.toDom("<b>" + this.value + "</b>"));
+		}
+		
+	});
+
+});
@@ -0,0 +1,31 @@
+define([
+	"dojo/_base/declare", 
+	"dojo/dom",
+	"dojo/dom-construct",
+	"dijit/_WidgetBase", 
+	"dijit/_TemplatedMixin",
+	"dojo/text!./templates/ElementWidget.html"
+], function(declare, dom, domConstruct, _WidgetBase, _TemplatedMixin, template) {
+	
+	return declare([_WidgetBase, _TemplatedMixin], {
+		
+		templateString: template,
+		
+		setLabel: function(label) {
+			domConstruct.empty(this.domLabelNode);
+			domConstruct.place(label, this.domLabelNode);
+		},
+		
+		setValue: function(value) {
+			domConstruct.empty(this.domValueNode);
+			domConstruct.place(value, this.domValueNode);
+		},
+		
+		setLink: function(link) {
+			domConstruct.empty(this.domLinkNode);
+			domConstruct.place(link, this.domLinkNode);
+		}
+		
+	});
+	
+});
@@ -0,0 +1,10 @@
+<div class="${baseClass}" data-dojo-attach-point="domNode" style="background-color: #fcfcfc;">
+	<table class="${baseClass}Table" data-dojo-attach-point="domTableNode" style="width:100%;">
+		<tr>
+			<td class="${baseClass}Icon" data-dojo-attach-point="domIconNode"></td>
+			<td class="${baseClass}Label" data-dojo-attach-point="domLabelNode"  style="width: 50%;"></td>
+			<td class="${baseClass}Value" data-dojo-attach-point="domValueNode" style="text-align: right; width: 50%;"></td>
+			<td class="${baseClass}Link" data-dojo-attach-point="domLinkNode"></td>
+		</tr>
+	</table>
+</div>
@@ -0,0 +1,86 @@
+define([
+	"dojo/_base/declare", 
+	"dojo/_base/lang",
+	"dojo/dom",
+	"dojo/dom-construct",
+	"dijit/_WidgetBase", 
+	"dijit/layout/BorderContainer",
+	"dijit/layout/StackContainer",
+	"dijit/layout/ContentPane",
+	"dijit/form/Button"
+], function(declare, lang, dom, domConstruct, _WidgetBase, BorderContainer, StackContainer, ContentPane, Button) {
+	
+	return declare([_WidgetBase], {
+		
+		/*
+		 * buildRendering function.
+		 */
+		buildRendering: function() {
+			if(!this._rendered){
+				
+			    // create a BorderContainer as the top widget in the hierarchy
+			    this.bc = new BorderContainer({
+			        style: "width: 100%; height: 100%;"
+
+			    });
+
+			    // create a ContentPane as the left pane in the BorderContainer
+			    /*this.cp1 = new ContentPane({
+			        region: "left",
+			        splitter: true,
+			        style: "width: 150px;",
+			        content: "<h4>Sitemap/Navigation</h4><ul><li>ToDo</li></ul>"
+			    });
+			    this.bc.addChild(this.cp1);*/
+
+				this.stackContainer = StackContainer();
+				this.backButton = new Button({
+					label: "Back",
+					onClick: lang.hitch(this, function(){
+						this.sitemap.goBack();
+					})
+			    });
+				this.homeButton = new Button({
+					label: "Home",
+					onClick: lang.hitch(this, function(){
+						this.sitemap.goToRootPage();
+					})
+			    });
+			    // create a ContentPane as the center pane in the BorderContainer
+			    this.cp2 = new ContentPane({
+			        region: "center",
+			        content: [this.stackContainer.domNode, this.backButton.domNode, this.homeButton.domNode]
+			    });
+			    this.bc.addChild(this.cp2);
+
+			    var contentNode = domConstruct.toDom("<b>Home Operating System:</b> <div id=\"breadCrumbNode\">bread crumbs here</div>");
+			    this.breadCrumbNode = dom.byId("breadCrumbNode", contentNode)
+			    // create a ContentPane as the top pane in the BorderContainer
+			    this.cp3 = new ContentPane({
+			        region: "top",
+			        content: contentNode
+			    });
+			    this.bc.addChild(this.cp3);
+
+				this.domNode = this.bc.domNode;
+			}
+			this.inherited(arguments);
+			this._rendered = true;
+		},
+		
+		/*
+		 * startup function.
+		 */
+		startup: function() {
+			this.bc.startup();
+		},
+		
+		/*
+		 * Set bread crumbs.
+		 */
+		setBreadCrumbs: function(/*string*/ text) {
+			this.breadCrumbNode.innerHTML=text
+		}
+	});
+
+});
@@ -1,6 +0,0 @@
-<?php
-   echo 'Hello World! Running on "'.php_uname().'" and time is '.date('Y-m-d H:i:s')."\n";
-   echo "debug1\n";
-   require_once('../index.php');
-   echo "debug2\n";
-?>
@@ -0,0 +1,33 @@
+
+
+
+html, body {
+    height: 100%;
+    margin: 0;
+    overflow: hidden;
+    padding: 0;
+}
+
+#appLayout {
+    height: 100%;
+}
+#leftCol {
+    width: 14em;
+}
+
+.claro .demoLayout .edgePanel {
+    background-color: #d0e9fc;
+}
+
+#viewsChart {
+    width: 550px;
+    height: 550px;
+}
+
+
+
+.claro .dijitToggleButtonChecked .dijitButtonNode {
+    background-color: #0090ff;
+    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2) inset;
+    transition-duration: 0.1s;
+}
@@ -0,0 +1,65 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+	<meta charset="utf-8">
+	<title>Sitemap Test 01</title>
+
+    <link rel="stylesheet" href="libs/dijit/themes/claro/claro.css" media="screen">
+    <link rel="stylesheet" href="libs/dojox/mobile/themes/ios7/ios7.css" media="screen">
+	<link rel="stylesheet" href="sitemap01.css" media="screen">
+
+	<!-- configure Dojo -->
+	<script>
+		var dojoConfig = {
+			async: true,
+			parseOnLoad: true,
+			isDebug: true,
+			deps: [
+				"dojo/parser", 
+				"dijit/layout/BorderContainer", 
+				"dijit/layout/TabContainer", 
+				"dijit/layout/ContentPane", 
+				"dijit/Calendar",
+				"dijit/Fieldset", 
+				"dijit/TitlePane",
+				"dijit/form/HorizontalSlider",
+				"dijit/form/HorizontalRule",
+				"dijit/form/HorizontalRuleLabels"
+			],
+			hos: {
+				deviceRepoUrl: "/hos/api/devices",
+				sitemapUrl: "/hos/api/sitemap"
+			}
+		};
+	</script>
+	
+    <!-- load Dojo -->
+    <script src="libs/dojo/dojo.js"
+	    data-dojo-config="async: true"></script>
+</head>
+
+
+<body class="claro">
+
+	<script>
+		require([
+			"hos/sitemap/SitemapAPI",
+			"dojo/dom-construct", 
+			"dojo/dom",
+			"dojo/domReady!"
+		], function(sitemapAPI, domConstruct, dom) {
+			sitemapAPI.getDefaultSitemap().then(function(sitemap) {
+				domConstruct.place(sitemap.domNode, "contentPane");
+				sitemap.startup();
+			}, function(error) {
+				var node = domConstruct.toDom("<b>Error: " + error + "</b>");
+				domConstruct.place(node, "contentPane");
+			});
+		});
+	</script>
+
+	<div id="contentPane" style="width: 100%; height: 100%;"></div>
+	
+</body>
+
+</html>
@@ -0,0 +1,65 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+	<meta charset="utf-8">
+	<title>Sitemap Test 01</title>
+
+    <link rel="stylesheet" href="libs/dijit/themes/claro/claro.css" media="screen">
+    <link rel="stylesheet" href="libs/dojox/mobile/themes/ios7/ios7.css" media="screen">
+	<link rel="stylesheet" href="sitemap01.css" media="screen">
+
+	<!-- configure Dojo -->
+	<script>
+		var dojoConfig = {
+			async: true,
+			parseOnLoad: true,
+			isDebug: true,
+			deps: [
+				"dojo/parser", 
+				"dijit/layout/BorderContainer", 
+				"dijit/layout/TabContainer", 
+				"dijit/layout/ContentPane", 
+				"dijit/Calendar",
+				"dijit/Fieldset", 
+				"dijit/TitlePane",
+				"dijit/form/HorizontalSlider",
+				"dijit/form/HorizontalRule",
+				"dijit/form/HorizontalRuleLabels"
+			],
+			hos: {
+				deviceRepoUrl: "/hos/api/devices",
+				sitemapUrl: "/hos/api/sitemap"
+			}
+		};
+	</script>
+	
+    <!-- load Dojo -->
+    <script src="libs/dojo/dojo.js"
+	    data-dojo-config="async: true"></script>
+</head>
+
+
+<body class="claro">
+
+	<script>
+		require([
+			"hos/sitemap/SitemapAPI",
+			"dojo/dom-construct", 
+			"dojo/dom",
+			"dojo/domReady!"
+		], function(sitemapAPI, domConstruct, dom) {
+			sitemapAPI.getSitemap("test02").then(function(sitemap) {
+				domConstruct.place(sitemap.domNode, "contentPane");
+				sitemap.startup();
+			}, function(error) {
+				var node = domConstruct.toDom("<b>Error: " + error + "</b>");
+				domConstruct.place(node, "contentPane");
+			});
+		});
+	</script>
+
+	<div id="contentPane" style="width: 100%; height: 100%;"></div>
+	
+</body>
+
+</html>
@@ -33,7 +33,7 @@
 	    }
 	  },
      "additionalProperties": false,
-      "required": [ "type", "set" ]
+      "required": [ "set" ]
    },
  	"effect": {
      "description": "",
@@ -49,7 +49,7 @@
 	    }
 	  },
      "additionalProperties": false,
-      "required": [ "type", "set" ]
+      "required": [ "set" ]
    },
  	"advproperties": {
      "description": "",
@@ -64,15 +64,15 @@
 	    }
 	  },
      "additionalProperties": true,
-      "required": [ "type" ]
+      "required": []
    }
  },
  "additionalProperties": false,
  "anyOf": [
-  	{ "required": [ "type", "switch" ] },
-  	{ "required": [ "type", "brightness" ] },
-  	{ "required": [ "type", "color" ] },
-  	{ "required": [ "type", "alert" ] },
-  	{ "required": [ "type", "effect" ] }
+  	{ "required": [ "switch" ] },
+  	{ "required": [ "brightness" ] },
+  	{ "required": [ "color" ] },
+  	{ "required": [ "alert" ] },
+  	{ "required": [ "effect" ] }
  ]
 }