diff --git a/CMakeLists.txt b/CMakeLists.txt
index 34bbc3de..dbf61041 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -90,7 +90,7 @@ SET(SOURCES
     src/framework/graphics/textarea.cpp
 
 # framework ui
-    src/framework/ui/uilayout.cpp
+    src/framework/ui/uianchorlayout.cpp
     src/framework/ui/uielement.cpp
     src/framework/ui/uielementskin.cpp
     src/framework/ui/uibuttonskin.cpp
diff --git a/data/modules/mainmenu/menustate.lua b/data/modules/mainmenu/menustate.lua
index 629bd3af..2c7070ba 100644
--- a/data/modules/mainmenu/menustate.lua
+++ b/data/modules/mainmenu/menustate.lua
@@ -4,8 +4,7 @@ function onEnterMenuState()
 end
 
 function onLeaveMenuState()
-    mainMenu:destroy()
-    mainMenu = nil
+
 end
 
 function onApplicationClose()
diff --git a/data/skins/tibiaskin.yml b/data/skins/tibiaskin.yml
index f95511e3..fae37292 100644
--- a/data/skins/tibiaskin.yml
+++ b/data/skins/tibiaskin.yml
@@ -34,7 +34,6 @@ panels:
     # the default panel is empty
 
   roundedGridPanel:
-    default size: [117, 171]
     bordered image:
       left border: [0,214,5,32]
       right border: [6,214,5,32]
diff --git a/src/framework/core/engine.cpp b/src/framework/core/engine.cpp
index f6b4dae0..618aad58 100644
--- a/src/framework/core/engine.cpp
+++ b/src/framework/core/engine.cpp
@@ -39,6 +39,7 @@ void Engine::init()
     // initialize stuff
     g_graphics.init();
     g_fonts.init("tibia-12px-rounded");
+    g_lua.init();
 }
 
 void Engine::terminate()
@@ -46,6 +47,14 @@ void Engine::terminate()
     // terminate stuff
     g_fonts.terminate();
     g_graphics.terminate();
+
+    // destroy root ui
+    UIContainer::getRoot()->destroy();
+
+    g_lua.terminate();
+
+    // poll remaning events
+    g_engine.poll();
 }
 
 void Engine::poll()
@@ -116,14 +125,6 @@ void Engine::run()
 
     m_stopping = false;
     m_running = false;
-
-    g_lua.collectGarbage();
-
-    // destroy root ui
-    rootContainer->destroy();
-
-    // poll remaning events
-    g_engine.poll();
 }
 
 void Engine::stop()
diff --git a/src/framework/script/luafunctions.cpp b/src/framework/script/luafunctions.cpp
index 8736d8ee..853196ee 100644
--- a/src/framework/script/luafunctions.cpp
+++ b/src/framework/script/luafunctions.cpp
@@ -41,11 +41,8 @@ void registerLuaFunctions()
     g_lua.registerMemberFunction("load", &lua_UI_load);
     g_lua.registerMemberFunction("getRootContainer", &lua_UI_getRootContainer);
 
-    // UILayout
-    g_lua.registerClass("UILayout");
-
     // UIElement
-    g_lua.registerClass("UIElement", "UILayout");
+    g_lua.registerClass("UIElement");
     g_lua.registerMemberField("id", &lua_UIElement_getId, &lua_UIElement_setId);
     g_lua.registerMemberField("enabled", &lua_UIElement_isEnabled, &lua_UIElement_setEnabled);
     g_lua.registerMemberField("visible", &lua_UIElement_isVisible, &lua_UIElement_setVisible);
@@ -224,7 +221,7 @@ int lua_UIElement_setLocked()
 int lua_UIElement_destroy()
 {
     if(UIElementPtr element = boost::dynamic_pointer_cast<UIElement>(g_lua.popClassInstance()))
-        element->destroy();
+        element->destroyLater();
     g_dispatcher.addTask(boost::bind(&LuaScript::collectGarbage, &g_lua));
     return 1;
 }
diff --git a/src/framework/script/luascript.cpp b/src/framework/script/luascript.cpp
index c95dd853..406ddff9 100644
--- a/src/framework/script/luascript.cpp
+++ b/src/framework/script/luascript.cpp
@@ -30,7 +30,7 @@
 
 LuaScript g_lua;
 
-LuaScript::LuaScript()
+void LuaScript::init()
 {
     L = luaL_newstate();
     if(!L)
@@ -45,9 +45,11 @@ LuaScript::LuaScript()
     registerLuaFunctions();
 }
 
-LuaScript::~LuaScript()
+void LuaScript::terminate()
 {
+    collectGarbage();
     lua_close(L);
+    L = NULL;
 }
 
 void LuaScript::loadAllModules()
diff --git a/src/framework/script/luascript.h b/src/framework/script/luascript.h
index cdbac6c5..2c933cb1 100644
--- a/src/framework/script/luascript.h
+++ b/src/framework/script/luascript.h
@@ -36,8 +36,10 @@ struct lua_State;
 class LuaScript
 {
 public:
-    LuaScript();
-    virtual ~LuaScript();
+    LuaScript() : L(NULL) { }
+
+    void init();
+    void terminate();
 
     void loadAllModules();
     bool loadFile(const std::string& fileName);
diff --git a/src/framework/ui/uianchorlayout.cpp b/src/framework/ui/uianchorlayout.cpp
new file mode 100644
index 00000000..33979ac3
--- /dev/null
+++ b/src/framework/ui/uianchorlayout.cpp
@@ -0,0 +1,162 @@
+/* The MIT License
+ *
+ * Copyright (c) 2010 OTClient, https://github.com/edubart/otclient
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+#include <prerequisites.h>
+#include <ui/uianchorlayout.h>
+
+UIElementPtr Anchor::getAnchorLineElement() const
+{
+    if(!m_anchoredElement.expired())
+        return m_anchoredElement.lock()->backwardsGetElementById(m_anchorLine.getElementId());
+    return UIElementPtr();
+}
+
+int Anchor::getAnchorLinePoint() const
+{
+    UIElementPtr anchorLineElement = getAnchorLineElement();
+    if(anchorLineElement) {
+        switch(m_anchorLine.getEdge()) {
+            case UI::AnchorLeft:
+                return anchorLineElement->getRect().left();
+            case UI::AnchorRight:
+                return anchorLineElement->getRect().right();
+            case UI::AnchorTop:
+                return anchorLineElement->getRect().top();
+            case UI::AnchorBottom:
+                return anchorLineElement->getRect().bottom();
+            case UI::AnchorHorizontalCenter:
+                return anchorLineElement->getRect().horizontalCenter();
+            case UI::AnchorVerticalCenter:
+                return anchorLineElement->getRect().verticalCenter();
+            default:
+                break;
+        }
+    }
+    return -9999;
+}
+
+bool UIAnchorLayout::addAnchor(const UIElementPtr& anchoredElement, UI::AnchorPoint anchoredEdge, const AnchorLine& anchorLine)
+{
+    Anchor anchor(anchoredElement, anchoredEdge, anchorLine);
+    UIElementPtr anchorLineElement = anchor.getAnchorLineElement();
+
+    // we can never anchor with itself
+    if(anchoredElement == anchorLineElement) {
+        logError("ERROR: anchoring with itself is not possible");
+        return false;
+    }
+
+    // TODO: check if itself is already anchored on the anchor element
+
+    // setup the anchor
+    m_anchors.push_back(anchor);
+
+    // recalculate anchored element layout
+    recalculateElementLayout(anchoredElement);
+    return true;
+}
+
+void UIAnchorLayout::recalculateElementLayout(const UIElementPtr& element)
+{
+    Rect rect = element->getRect();
+    bool verticalMoved = false;
+    bool horizontalMoved = false;
+
+    foreach(const Anchor& anchor, m_anchors) {
+        if(anchor.getAnchoredElement() == element && anchor.getAnchorLineElement()) {
+            int point = anchor.getAnchorLinePoint();
+            switch(anchor.getAnchoredEdge()) {
+                case UI::AnchorHorizontalCenter:
+                    rect.moveHorizontalCenter(point + element->getMarginLeft() - element->getMarginRight());
+                    horizontalMoved = true;
+                    break;
+                case UI::AnchorLeft:
+                    if(!horizontalMoved) {
+                        rect.moveLeft(point + element->getMarginLeft());
+                        horizontalMoved = true;
+                    } else
+                        rect.setLeft(point + element->getMarginLeft());
+                    break;
+                case UI::AnchorRight:
+                    if(!horizontalMoved) {
+                        rect.moveRight(point - element->getMarginRight());
+                        horizontalMoved = true;
+                    } else
+                        rect.setRight(point - element->getMarginRight());
+                    break;
+                case UI::AnchorVerticalCenter:
+                    rect.moveVerticalCenter(point + element->getMarginTop() - element->getMarginBottom());
+                    verticalMoved = true;
+                    break;
+                case UI::AnchorTop:
+                    if(!verticalMoved) {
+                        rect.moveTop(point + element->getMarginTop());
+                        verticalMoved = true;
+                    } else
+                        rect.setTop(point + element->getMarginTop());
+                    break;
+                case UI::AnchorBottom:
+                    if(!verticalMoved) {
+                        rect.moveBottom(point - element->getMarginBottom());
+                        verticalMoved = true;
+                    } else
+                        rect.setBottom(point - element->getMarginBottom());
+                    break;
+                default:
+                    break;
+            }
+        }
+    }
+
+    if(rect != element->getRect())
+        element->setRect(rect);
+}
+
+void UIAnchorLayout::recalculateChildrenLayout(const UIElementPtr& parent)
+{
+    foreach(const Anchor& anchor, m_anchors) {
+        if(anchor.getAnchorLineElement() == parent) {
+            UIElementPtr child = anchor.getAnchoredElement();
+            if(child)
+                recalculateElementLayout(child);
+        }
+    }
+}
+
+UI::AnchorPoint UIAnchorLayout::parseAnchorPoint(const std::string& anchorPointStr)
+{
+    if(anchorPointStr == "left")
+        return UI::AnchorLeft;
+    else if(anchorPointStr == "right")
+        return UI::AnchorRight;
+    else if(anchorPointStr == "top")
+        return UI::AnchorTop;
+    else if(anchorPointStr == "bottom")
+        return UI::AnchorBottom;
+    else if(anchorPointStr == "horizontalCenter")
+        return UI::AnchorHorizontalCenter;
+    else if(anchorPointStr == "verticalCenter")
+        return UI::AnchorVerticalCenter;
+    return UI::AnchorNone;
+}
diff --git a/src/framework/ui/uianchorlayout.h b/src/framework/ui/uianchorlayout.h
new file mode 100644
index 00000000..f99d4e98
--- /dev/null
+++ b/src/framework/ui/uianchorlayout.h
@@ -0,0 +1,77 @@
+/* The MIT License
+ *
+ * Copyright (c) 2010 OTClient, https://github.com/edubart/otclient
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+#ifndef UIANCHORLAYOUT_H
+#define UIANCHORLAYOUT_H
+
+#include <prerequisites.h>
+#include <ui/uiconstants.h>
+#include <ui/uilayout.h>
+#include <ui/uielement.h>
+
+class AnchorLine
+{
+public:
+    AnchorLine(const std::string& elementId, UI::AnchorPoint edge) : m_elementId(elementId), m_edge(edge) { }
+    AnchorLine(const AnchorLine& other) : m_elementId(other.m_elementId), m_edge(other.m_edge) { }
+    UI::AnchorPoint getEdge() const { return m_edge; }
+    const std::string& getElementId() const { return m_elementId; }
+
+private:
+    std::string m_elementId;
+    UI::AnchorPoint m_edge;
+};
+
+class Anchor
+{
+public:
+    Anchor(const UIElementPtr& anchoredElement, UI::AnchorPoint anchoredEdge, const AnchorLine& anchorLine)
+    : m_anchoredElement(anchoredElement), m_anchoredEdge(anchoredEdge), m_anchorLine(anchorLine) { }
+    UIElementPtr getAnchorLineElement() const ;
+    UIElementPtr getAnchoredElement() const { return m_anchoredElement.lock(); }
+    UI::AnchorPoint getAnchoredEdge() const { return m_anchoredEdge; }
+    int getAnchorLinePoint() const;
+
+private:
+    UIElementWeakPtr m_anchoredElement;
+    UI::AnchorPoint m_anchoredEdge;
+    AnchorLine m_anchorLine;
+};
+
+class UIAnchorLayout : public UILayout
+{
+public:
+    bool addAnchor(const UIElementPtr& anchoredElement, UI::AnchorPoint anchoredEdge, const AnchorLine& anchorLine);
+    void recalculateElementLayout(const UIElementPtr& element);
+    void recalculateChildrenLayout(const UIElementPtr& parent);
+
+    static UI::AnchorPoint parseAnchorPoint(const std::string& anchorPointStr);
+
+private:
+    std::vector<Anchor> m_anchors;
+};
+
+typedef boost::shared_ptr<UIAnchorLayout> UIAnchorLayoutPtr;
+
+#endif // UIANCHORLAYOUT_H
diff --git a/src/framework/ui/uibutton.cpp b/src/framework/ui/uibutton.cpp
index 4b448473..8195876f 100644
--- a/src/framework/ui/uibutton.cpp
+++ b/src/framework/ui/uibutton.cpp
@@ -29,9 +29,9 @@
 void UIButton::onInputEvent(const InputEvent& event)
 {
     if(event.type == EV_MOUSE_LDOWN && getRect().contains(event.mousePos)) {
-        m_state = UI::ButtonDown;
-    } else if(event.type == EV_MOUSE_LUP && m_state == UI::ButtonDown) {
-        m_state = UI::ButtonUp;
+        m_state = ButtonDown;
+    } else if(event.type == EV_MOUSE_LUP && m_state == ButtonDown) {
+        m_state = ButtonUp;
         if(getRect().contains(event.mousePos)) {
             g_dispatcher.addTask(boost::bind(&Scriptable::callLuaTableField, shared_from_this(), "onClick"));
         }
diff --git a/src/framework/ui/uibutton.h b/src/framework/ui/uibutton.h
index 19298191..f2081eeb 100644
--- a/src/framework/ui/uibutton.h
+++ b/src/framework/ui/uibutton.h
@@ -35,22 +35,29 @@ typedef boost::shared_ptr<UIButton> UIButtonPtr;
 class UIButton : public UIElement
 {
 public:
+    enum ButtonState
+    {
+        ButtonUp,
+        ButtonDown,
+        ButtonMouseOver
+    };
+
     UIButton() :
         UIElement(UI::Button),
-        m_state(UI::ButtonUp) {  }
+        m_state(ButtonUp) {  }
 
     void onInputEvent(const InputEvent& event);
 
     void setText(const std::string& text) { m_text = text; }
     std::string getText() const { return m_text; }
 
-    UI::EButtonState getState() { return m_state; }
+    ButtonState getState() { return m_state; }
 
     virtual const char *getScriptableName() const { return "UIButton"; }
 
 private:
     std::string m_text;
-    UI::EButtonState m_state;
+    ButtonState m_state;
 };
 
 #endif // UIBUTTON_H
diff --git a/src/framework/ui/uibuttonskin.cpp b/src/framework/ui/uibuttonskin.cpp
index aef76f54..3dadf50a 100644
--- a/src/framework/ui/uibuttonskin.cpp
+++ b/src/framework/ui/uibuttonskin.cpp
@@ -50,10 +50,10 @@ void UIButtonSkin::draw(UIElement *element)
 
     Rect textRect = button->getRect();
 
-    if(button->getState() == UI::ButtonDown && m_buttonDownImage) {
+    if(button->getState() == UIButton::ButtonDown && m_buttonDownImage) {
         m_buttonDownImage->draw(element->getRect());
         textRect.translate(m_buttonDownTranslate);
-    } else if(button->getState() == UI::ButtonMouseOver && m_buttonHoverImage) {
+    } else if(button->getState() == UIButton::ButtonMouseOver && m_buttonHoverImage) {
         m_buttonHoverImage->draw(element->getRect());
     } else {
         UIElementSkin::draw(element);
diff --git a/src/framework/ui/uicheckbox.cpp b/src/framework/ui/uicheckbox.cpp
index cb9ebada..b55ecaed 100644
--- a/src/framework/ui/uicheckbox.cpp
+++ b/src/framework/ui/uicheckbox.cpp
@@ -25,7 +25,7 @@
 #include <prerequisites.h>
 #include <ui/uicheckbox.h>
 
-UICheckBox::UICheckBox(UI::EElementType type): UIElement(type)
+UICheckBox::UICheckBox(UI::ElementType type): UIElement(type)
 {
 
 }
diff --git a/src/framework/ui/uicheckbox.h b/src/framework/ui/uicheckbox.h
index 59972ca5..d5def390 100644
--- a/src/framework/ui/uicheckbox.h
+++ b/src/framework/ui/uicheckbox.h
@@ -31,7 +31,7 @@
 class UICheckBox : public UIElement
 {
 public:
-    UICheckBox(UI::EElementType type = UI::Element);
+    UICheckBox(UI::ElementType type = UI::Element);
 
     virtual const char *getScriptableName() const { return "UICheckBox"; }
 };
diff --git a/src/framework/ui/uiconstants.h b/src/framework/ui/uiconstants.h
index 7c596d96..54bfa826 100644
--- a/src/framework/ui/uiconstants.h
+++ b/src/framework/ui/uiconstants.h
@@ -26,33 +26,7 @@
 #define UICONSTANTS_H
 
 namespace UI {
-    enum EButtonState
-    {
-        ButtonUp,
-        ButtonDown,
-        ButtonMouseOver
-    };
-
-    enum EButtonEvent
-    {
-        ButtonPressUp,
-        ButtonPressDown,
-        ButtonEnterMouseOver,
-        ButtonLeaveMouseOver
-    };
-
-    enum EMessageBoxFlags
-    {
-        MessageBoxOk = 1 << 0,
-        MessageBoxCancel = 1 << 1,
-        MessageBoxYes = 1 << 2,
-        MessageBoxNo = 1 << 3,
-        MessageBoxOkCancel = MessageBoxOk | MessageBoxCancel,
-        MessageBoxYesNo = MessageBoxYes | MessageBoxNo
-    };
-
-    enum EElementType
-    {
+    enum ElementType {
         Element = 0,
         Container,
         Panel,
@@ -63,6 +37,16 @@ namespace UI {
         CheckBox,
         LineDecoration
     };
+
+    enum AnchorPoint {
+        AnchorLeft = 0,
+        AnchorHorizontalCenter,
+        AnchorRight,
+        AnchorTop,
+        AnchorVerticalCenter,
+        AnchorBottom,
+        AnchorNone
+    };
 }
 
 #endif  // UICONSTANTS_H
diff --git a/src/framework/ui/uicontainer.cpp b/src/framework/ui/uicontainer.cpp
index 184aa403..304e3b23 100644
--- a/src/framework/ui/uicontainer.cpp
+++ b/src/framework/ui/uicontainer.cpp
@@ -25,9 +25,10 @@
 #include <prerequisites.h>
 #include <core/resources.h>
 #include <ui/uicontainer.h>
+#include <ui/uianchorlayout.h>
 #include <core/dispatcher.h>
 
-void UIContainer::internalOnDestroy()
+void UIContainer::destroy()
 {
     //logTraceDebug(getId());
 
@@ -37,11 +38,11 @@ void UIContainer::internalOnDestroy()
 
     // destroy children
     while(m_children.size() > 0) {
-        UIElementPtr element = m_children.back(); //hold reference
-        element->internalOnDestroy();
+        UIElementPtr element = m_children.front(); //hold reference
+        element->destroy();
     }
 
-    UIElement::internalOnDestroy();
+    UIElement::destroy();
 }
 
 UIContainerPtr& UIContainer::getRoot()
@@ -50,6 +51,7 @@ UIContainerPtr& UIContainer::getRoot()
     if(!rootContainer) {
         rootContainer = UIContainerPtr(new UIContainer);
         rootContainer->setId("root");
+        rootContainer->setLayout(UILayoutPtr(new UIAnchorLayout));
     }
     return rootContainer;
 }
@@ -87,9 +89,15 @@ bool UIContainer::hasChild(const UIElementPtr& child)
 
 UIElementPtr UIContainer::getChildById(const std::string& id)
 {
-    if(getId() == id)
+    if(getId() == id || id == "self")
         return asUIElement();
 
+    if(id == "parent")
+        return getParent();
+
+    if(id == "root")
+        return getRoot();
+
     foreach(const UIElementPtr& child, m_children) {
         if(child->getId() == id)
             return child;
@@ -111,9 +119,15 @@ UIElementPtr UIContainer::getChildByPos(const Point& pos)
 
 UIElementPtr UIContainer::recursiveGetChildById(const std::string& id)
 {
-    if(getId() == id)
+    if(getId() == id || id == "self")
         return asUIElement();
 
+    if(id == "parent")
+        return getParent();
+
+    if(id == "root")
+        return getRoot();
+
     foreach(const UIElementPtr& element, m_children) {
         if(element->getId() == id)
             return element;
diff --git a/src/framework/ui/uicontainer.h b/src/framework/ui/uicontainer.h
index 441df42f..781bc55e 100644
--- a/src/framework/ui/uicontainer.h
+++ b/src/framework/ui/uicontainer.h
@@ -31,10 +31,11 @@
 class UIContainer : public UIElement
 {
 public:
-    UIContainer(UI::EElementType type = UI::Container) :
+    UIContainer(UI::ElementType type = UI::Container) :
         UIElement(type) { }
     virtual ~UIContainer() { }
 
+    virtual void destroy();
     virtual void onLoad();
     virtual void render();
     virtual void onInputEvent(const InputEvent& event);
@@ -70,7 +71,7 @@ public:
     /// Get focused element
     UIElementPtr getFocusedElement() const { return m_focusedElement; }
 
-    virtual UI::EElementType getElementType() const { return UI::Container; }
+    virtual UI::ElementType getElementType() const { return UI::Container; }
     UIContainerPtr asUIContainer() { return boost::static_pointer_cast<UIContainer>(shared_from_this()); }
 
     virtual const char *getScriptableName() const { return "UIContainer"; }
@@ -78,9 +79,6 @@ public:
     /// Get root container (the container that contains everything)
     static UIContainerPtr& getRoot();
 
-protected:
-    virtual void internalOnDestroy();
-
 private:
     std::list<UIElementPtr> m_children;
     std::list<UIElementPtr> m_lockedElements;
diff --git a/src/framework/ui/uielement.cpp b/src/framework/ui/uielement.cpp
index 7a2c01e3..feefad5a 100644
--- a/src/framework/ui/uielement.cpp
+++ b/src/framework/ui/uielement.cpp
@@ -30,11 +30,15 @@
 #include <ui/uielementskin.h>
 #include <ui/uicontainer.h>
 
-UIElement::UIElement(UI::EElementType type) :
-    UILayout(),
+UIElement::UIElement(UI::ElementType type) :
+    Scriptable(),
     m_type(type),
     m_visible(true),
-    m_enabled(true)
+    m_enabled(true),
+    m_marginLeft(0),
+    m_marginRight(0),
+    m_marginTop(0),
+    m_marginBottom(0)
 {
 
 }
@@ -44,13 +48,13 @@ UIElement::~UIElement()
     //logTraceDebug(getId());
 }
 
-void UIElement::destroy()
+void UIElement::destroyLater()
 {
     //logTraceDebug(getId());
-    g_dispatcher.addTask(boost::bind(&UIElement::internalOnDestroy, asUIElement()));
+    g_dispatcher.addTask(boost::bind(&UIElement::destroy, asUIElement()));
 }
 
-void UIElement::internalOnDestroy()
+void UIElement::destroy()
 {
     //logTraceDebug(getId());
 
@@ -58,17 +62,16 @@ void UIElement::internalOnDestroy()
     callLuaTableField("onDestroy");
 
     // remove from parent
-    if(getParent()) {
+    if(getParent())
         getParent()->removeChild(me);
-    }
 
     // free script stuff
     releaseLuaTableRef();
 
-    g_dispatcher.addTask(boost::bind(&UIElement::internalDestroyCheck, asUIElement()));
+    g_dispatcher.addTask(boost::bind(&UIElement::destroyCheck, me));
 }
 
-void UIElement::internalDestroyCheck()
+void UIElement::destroyCheck()
 {
     //logTraceDebug(getId());
 
@@ -79,6 +82,29 @@ void UIElement::internalDestroyCheck()
     }
 }
 
+void UIElement::setSize(const Size& size)
+{
+    Rect rect = getRect();
+    if(rect.isValid())
+        rect.setSize(size);
+    else
+        rect = Rect(0, 0, size);
+    setRect(rect);
+    getLayout()->recalculateElementLayout(asUIElement());
+}
+
+void UIElement::setRect(const Rect& rect)
+{
+    if(rect != m_rect) {
+        m_rect = rect;
+
+        // rect updated, recalculate children layout
+        getLayout()->recalculateChildrenLayout(asUIElement());
+
+        onRectUpdate();
+    }
+}
+
 void UIElement::setSkin(const UIElementSkinPtr& skin)
 {
     m_skin = skin;
@@ -100,11 +126,16 @@ void UIElement::render()
 
 UIElementPtr UIElement::backwardsGetElementById(const std::string& id)
 {
-    if(getId() == id)
+    if(getId() == id || id == "self")
         return asUIElement();
 
-    UIElementPtr element;
+    if(id == "parent")
+        return getParent();
+
+    if(id == "root")
+        return UIContainer::getRoot();
 
+    UIElementPtr element;
     if(asUIContainer()) {
         element = asUIContainer()->recursiveGetChildById(id);
         if(element)
@@ -169,3 +200,12 @@ void UIElement::setFocused(bool focused)
         }
     }
 }
+
+UILayoutPtr UIElement::getLayout() const
+{
+    if(m_layout)
+        return m_layout;
+    else if(getParent())
+        return getParent()->getLayout();
+    return UILayoutPtr();
+}
diff --git a/src/framework/ui/uielement.h b/src/framework/ui/uielement.h
index 2b393324..514e43ec 100644
--- a/src/framework/ui/uielement.h
+++ b/src/framework/ui/uielement.h
@@ -27,9 +27,10 @@
 
 #include <prerequisites.h>
 #include <core/input.h>
+#include <script/scriptable.h>
 #include <ui/uiconstants.h>
-#include <ui/uilayout.h>
 #include <ui/uielementskin.h>
+#include <ui/uilayout.h>
 
 class UIElementSkin;
 
@@ -41,18 +42,15 @@ class UIElement;
 typedef boost::shared_ptr<UIElement> UIElementPtr;
 typedef boost::weak_ptr<UIElement> UIElementWeakPtr;
 
-typedef boost::function<void(UIElementPtr)> UIElementCallback;
-
-class UIElement : public UILayout
+class UIElement : public Scriptable
 {
 public:
-    UIElement(UI::EElementType type = UI::Element);
+    UIElement(UI::ElementType type = UI::Element);
     virtual ~UIElement();
 
-    /// Destroy this element by removing it from its parent
-    void destroy();
-    virtual void internalOnDestroy();
-    virtual void internalDestroyCheck();
+    void destroyLater();
+    virtual void destroy();
+    virtual void destroyCheck();
 
     /// Draw element
     virtual void render();
@@ -61,11 +59,15 @@ public:
     virtual void onLoad();
     virtual void onInputEvent(const InputEvent& event) { }
     virtual void onFocusChange() { }
+    virtual void onRectUpdate() { }
 
     UIElementPtr backwardsGetElementById(const std::string& id);
 
     void moveTo(Point pos);
 
+    void setLayout(const UILayoutPtr& layout) { m_layout = layout; }
+    UILayoutPtr getLayout() const;
+
     void setSkin(const UIElementSkinPtr& skin);
     UIElementSkinPtr getSkin() const { return m_skin; }
 
@@ -85,19 +87,48 @@ public:
     bool isVisible() const { return m_visible; }
 
     virtual bool isFocusable() const { return false; }
-    UI::EElementType getElementType() const { return m_type; }
+    UI::ElementType getElementType() const { return m_type; }
 
     UIElementPtr asUIElement() { return boost::static_pointer_cast<UIElement>(shared_from_this()); }
     virtual UIContainerPtr asUIContainer() { return UIContainerPtr(); }
     virtual const char *getScriptableName() const { return "UIElement"; }
 
+    void setSize(const Size& size);
+    Size getSize() { return m_rect.size(); }
+
+    /// Set the layout rect, always absolute position
+    void setRect(const Rect& rect);
+    /// Get layout size, it always return the absolute position
+    Rect getRect() const { return m_rect; }
+
+    // margins
+    void setMargin(int top, int left, int bottom, int right) { m_marginLeft = left; m_marginRight = right; m_marginTop = top; m_marginBottom = bottom; getLayout()->recalculateElementLayout(asUIElement()); }
+    void setMargin(int horizontal, int vertical) { m_marginLeft = m_marginRight = horizontal; m_marginTop = m_marginBottom = vertical; getLayout()->recalculateElementLayout(asUIElement()); }
+    void setMargin(int margin) { m_marginLeft = m_marginRight = m_marginTop = m_marginBottom = margin; getLayout()->recalculateElementLayout(asUIElement()); }
+    void setMarginLeft(int margin) { m_marginLeft = margin; getLayout()->recalculateElementLayout(asUIElement()); }
+    void setMarginRight(int margin) { m_marginRight = margin; getLayout()->recalculateElementLayout(asUIElement()); }
+    void setMarginTop(int margin) { m_marginTop = margin; getLayout()->recalculateElementLayout(asUIElement()); }
+    void setMarginBottom(int margin) { m_marginBottom = margin; getLayout()->recalculateElementLayout(asUIElement()); }
+
+    int getMarginLeft() const { return m_marginLeft; }
+    int getMarginRight() const { return m_marginRight; }
+    int getMarginTop() const { return m_marginTop; }
+    int getMarginBottom() const { return m_marginBottom; }
+
 private:
-    UI::EElementType m_type;
+    UI::ElementType m_type;
     UIContainerWeakPtr m_parent;
     UIElementSkinPtr m_skin;
+    UILayoutPtr m_layout;
     std::string m_id;
     bool m_visible;
     bool m_enabled;
+
+    Rect m_rect;
+    int m_marginLeft;
+    int m_marginRight;
+    int m_marginTop;
+    int m_marginBottom;
 };
 
 #endif // UIELEMENT_H
diff --git a/src/framework/ui/uielementskin.h b/src/framework/ui/uielementskin.h
index ae10a075..d098120e 100644
--- a/src/framework/ui/uielementskin.h
+++ b/src/framework/ui/uielementskin.h
@@ -34,7 +34,7 @@ class UIElement;
 class UIElementSkin
 {
 public:
-    UIElementSkin(const std::string& name, UI::EElementType elementType) :
+    UIElementSkin(const std::string& name, UI::ElementType elementType) :
         m_name(name),
         m_elementType(elementType) { }
     UIElementSkin() : m_elementType(UI::Element) { }
@@ -49,7 +49,7 @@ public:
 
     const std::string& getName() const { return m_name; }
     const Size& getDefaultSize() const { return m_defaultSize; }
-    UI::EElementType getElementType() const { return m_elementType; }
+    UI::ElementType getElementType() const { return m_elementType; }
     ImagePtr getDefaultImage() const { return m_defaultImage; }
 
 protected:
@@ -57,7 +57,7 @@ protected:
 
 private:
     std::string m_name;
-    UI::EElementType m_elementType;
+    UI::ElementType m_elementType;
     Size m_defaultSize;
     ImagePtr m_defaultImage;
 };
diff --git a/src/framework/ui/uilayout.cpp b/src/framework/ui/uilayout.cpp
deleted file mode 100644
index a350d0eb..00000000
--- a/src/framework/ui/uilayout.cpp
+++ /dev/null
@@ -1,160 +0,0 @@
-/* The MIT License
- *
- * Copyright (c) 2010 OTClient, https://github.com/edubart/otclient
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-
-#include <prerequisites.h>
-#include <ui/uielement.h>
-#include <ui/uilayout.h>
-
-int AnchorLine::getPos() const
-{
-    UILayoutPtr element = m_relativeElement.lock();
-    if(element) {
-        switch(m_anchorType) {
-            case ANCHOR_LEFT:
-                return element->getRect().left();
-            case ANCHOR_RIGHT:
-                return element->getRect().right();
-            case ANCHOR_TOP:
-                return element->getRect().top();
-            case ANCHOR_BOTTOM:
-                return element->getRect().bottom();
-            case ANCHOR_HORIZONTAL_CENTER:
-                return element->getRect().horizontalCenter();
-            case ANCHOR_VERTICAL_CENTER:
-                return element->getRect().verticalCenter();
-            default:
-                return 0;
-        }
-    }
-    logError("ERROR: anchor line of an element has expired, your UI is missconfigured");
-    return 0;
-}
-
-void UILayout::setSize(const Size& size)
-{
-    if(m_rect.isValid())
-        m_rect.setSize(size);
-    else
-        m_rect = Rect(0, 0, size);
-
-    // rect updated, recalculate itself and anchored elements positions
-    recalculateLayout();
-}
-
-void UILayout::setRect(const Rect& rect)
-{
-    m_rect = rect;
-
-    // rect updated, recalculate itself and anchored elements positions
-    recalculateAnchoredLayout();
-}
-
-bool UILayout::addAnchor(EAnchorType type, const AnchorLine& anchorLine)
-{
-    // we can never anchor with itself
-    if(anchorLine.getRelativeElement() == asUILayout()) {
-        logError("ERROR: anchoring with itself is not possible");
-        return false;
-    }
-
-    // check if this layout is already anchored with the relative element
-    // this only happens in missconfigurations
-    for(auto it = m_anchoredElements.begin(); it != m_anchoredElements.end(); ++it) {
-        if((*it).lock() == anchorLine.getRelativeElement()) {
-            logError("ERROR: anchoring elements with each other is not possible");
-            return false;
-        }
-    }
-
-    // setup the anchor
-    m_anchors[type] = anchorLine;
-    anchorLine.getRelativeElement()->addAnchoredElement(asUILayout());
-
-    // recalculate itself and anchored elements
-    recalculateLayout();
-    return true;
-}
-
-void UILayout::addAnchoredElement(UILayoutPtr anchoredElement)
-{
-    // check if is already anchored
-    bool found = false;
-    for(auto it = m_anchoredElements.begin(); it != m_anchoredElements.end(); ++it) {
-        if((*it).lock() == anchoredElement) {
-            found = true;
-            break;
-        }
-    }
-
-    // if not, anchor it
-    if(!found)
-        m_anchoredElements.push_back(anchoredElement);
-}
-
-void UILayout::recalculateLayout()
-{
-    // recalculate horizontal position
-    if(m_anchors[ANCHOR_HORIZONTAL_CENTER].isValid()) {
-        m_rect.moveHorizontalCenter(m_anchors[ANCHOR_HORIZONTAL_CENTER].getPos() + m_marginLeft - m_marginRight);
-    } else {
-        if(m_anchors[ANCHOR_LEFT].isValid() && m_anchors[ANCHOR_RIGHT].isValid()) {
-            m_rect.setLeft(m_anchors[ANCHOR_LEFT].getPos() + m_marginLeft);
-            m_rect.setRight(m_anchors[ANCHOR_RIGHT].getPos() - m_marginRight);
-        } else if(m_anchors[ANCHOR_LEFT].isValid()) {
-            m_rect.moveLeft(m_anchors[ANCHOR_LEFT].getPos() + m_marginLeft);
-        } else if(m_anchors[ANCHOR_RIGHT].isValid()) {
-            m_rect.moveRight(m_anchors[ANCHOR_RIGHT].getPos() - m_marginRight);
-        }
-    }
-
-    // recalculate vertical position
-    if(m_anchors[ANCHOR_VERTICAL_CENTER].isValid()) {
-        m_rect.moveVerticalCenter(m_anchors[ANCHOR_VERTICAL_CENTER].getPos() + m_marginTop - m_marginBottom);
-    } else {
-        if(m_anchors[ANCHOR_TOP].isValid() && m_anchors[ANCHOR_BOTTOM].isValid()) {
-            m_rect.setTop(m_anchors[ANCHOR_TOP].getPos() + m_marginTop);
-            m_rect.setBottom(m_anchors[ANCHOR_BOTTOM].getPos() - m_marginBottom);
-        } else if(m_anchors[ANCHOR_TOP].isValid()) {
-            m_rect.moveTop(m_anchors[ANCHOR_TOP].getPos() + m_marginTop);
-        } else if(m_anchors[ANCHOR_BOTTOM].isValid()) {
-            m_rect.moveBottom(m_anchors[ANCHOR_BOTTOM].getPos() - m_marginBottom);
-        }
-    }
-
-    recalculateAnchoredLayout();
-
-    // fire layout update event
-    onLayoutRectChange(m_rect);
-}
-
-void UILayout::recalculateAnchoredLayout()
-{
-    // recalculate anchored elements positions
-    for(auto it = m_anchoredElements.begin(); it != m_anchoredElements.end(); ++it) {
-        UILayoutPtr element = (*it).lock();
-        if(element)
-            element->recalculateLayout();
-    }
-}
-
diff --git a/src/framework/ui/uilayout.h b/src/framework/ui/uilayout.h
index d5ebb4c7..3216a323 100644
--- a/src/framework/ui/uilayout.h
+++ b/src/framework/ui/uilayout.h
@@ -26,109 +26,20 @@
 #define UILAYOUT_H
 
 #include <prerequisites.h>
-#include <ui/uiconstants.h>
-#include <script/scriptable.h>
 
-enum EAnchorType {
-    ANCHOR_LEFT = 0,
-    ANCHOR_RIGHT,
-    ANCHOR_TOP,
-    ANCHOR_BOTTOM,
-    ANCHOR_HORIZONTAL_CENTER,
-    ANCHOR_VERTICAL_CENTER,
-    ANCHOR_NONE
-};
+class UIElement;
+typedef boost::shared_ptr<UIElement> UIElementPtr;
 
 class UILayout;
 typedef boost::shared_ptr<UILayout> UILayoutPtr;
-typedef boost::weak_ptr<UILayout> UILayoutWeakPtr;
 
-class AnchorLine
+class UILayout : public boost::enable_shared_from_this<UILayout>
 {
 public:
-    AnchorLine() : m_anchorType(ANCHOR_NONE) { }
-    AnchorLine(const AnchorLine& other) :
-        m_relativeElement(other.m_relativeElement), m_anchorType(other.m_anchorType) { }
-    AnchorLine(UILayoutPtr relativeElement, EAnchorType anchorType) :
-        m_relativeElement(relativeElement), m_anchorType(anchorType) { }
-    bool isValid() const { return (m_anchorType != ANCHOR_NONE && !m_relativeElement.expired()); }
-
-    /// Get the position relative to this anchor line
-    int getPos() const;
-    EAnchorType getAnchorType() const { return m_anchorType; }
-    UILayoutPtr getRelativeElement() const { return m_relativeElement.lock(); }
-
-private:
-    UILayoutWeakPtr m_relativeElement;
-    EAnchorType m_anchorType;
-};
-
-class UILayout : public Scriptable
-{
-public:
-    UILayout() : Scriptable(),
-        m_marginLeft(0),
-        m_marginRight(0),
-        m_marginTop(0),
-        m_marginBottom(0) { }
-    virtual ~UILayout() { }
-
-    void setSize(const Size& size);
-    Size getSize() { return m_rect.size(); }
-
-    /// Set the layout rect, always absolute position
-    void setRect(const Rect& rect);
-    /// Get layout size, it always return the absolute position
-    Rect getRect() const { return m_rect; }
-
-    // anchors add methods
-    bool addAnchor(EAnchorType type, const AnchorLine& anchorLine);
-    void anchorLeft(const AnchorLine& anchorLine) { addAnchor(ANCHOR_LEFT, anchorLine); }
-    void anchorRight(const AnchorLine& anchorLine) { addAnchor(ANCHOR_RIGHT, anchorLine); }
-    void anchorTop(const AnchorLine& anchorLine) { addAnchor(ANCHOR_TOP, anchorLine); }
-    void anchorBottom(const AnchorLine& anchorLine) { addAnchor(ANCHOR_BOTTOM, anchorLine); }
-    void anchorHorizontalCenter(const AnchorLine& anchorLine) { addAnchor(ANCHOR_HORIZONTAL_CENTER, anchorLine); }
-    void anchorVerticalCenter(const AnchorLine& anchorLine) { addAnchor(ANCHOR_VERTICAL_CENTER, anchorLine); }
-
-    // anchor lines
-    AnchorLine left() { return AnchorLine(asUILayout(), ANCHOR_LEFT); }
-    AnchorLine right() { return AnchorLine(asUILayout(), ANCHOR_RIGHT); }
-    AnchorLine top() { return AnchorLine(asUILayout(), ANCHOR_TOP); }
-    AnchorLine bottom() { return AnchorLine(asUILayout(), ANCHOR_BOTTOM); }
-    AnchorLine horizontalCenter() { return AnchorLine(asUILayout(), ANCHOR_HORIZONTAL_CENTER); }
-    AnchorLine verticalCenter() { return AnchorLine(asUILayout(), ANCHOR_VERTICAL_CENTER); }
-
-    // margins
-    void setMargin(int top, int left, int bottom, int right) { m_marginLeft = left; m_marginRight = right; m_marginTop = top; m_marginBottom = bottom; recalculateLayout(); }
-    void setMargin(int horizontal, int vertical) { m_marginLeft = m_marginRight = horizontal; m_marginTop = m_marginBottom = vertical; recalculateLayout(); }
-    void setMargin(int margin) { m_marginLeft = m_marginRight = m_marginTop = m_marginBottom = margin; recalculateLayout(); }
-    void setMarginLeft(int margin) { m_marginLeft = margin; recalculateLayout(); }
-    void setMarginRight(int margin) { m_marginRight = margin; recalculateLayout(); }
-    void setMarginTop(int margin) { m_marginTop = margin; recalculateLayout(); }
-    void setMarginBottom(int margin) { m_marginBottom = margin; recalculateLayout(); }
-
-    UILayoutPtr asUILayout() { return boost::static_pointer_cast<UILayout>(shared_from_this()); }
-
-    virtual const char *getScriptableName() const { return "UILayout"; }
-
-protected:
-    virtual void onLayoutRectChange(const Rect& newRect) { }
-
-private:
-    /// Recalculate itself and anchored elements positions
-    void recalculateLayout();
-    /// Recalculate anchored elements positions
-    void recalculateAnchoredLayout();
-    void addAnchoredElement(UILayoutPtr anchoredElement);
-
-    AnchorLine m_anchors[6];
+    UILayout() { }
 
-    Rect m_rect;
-    int m_marginLeft;
-    int m_marginRight;
-    int m_marginTop;
-    int m_marginBottom;
-    std::list<UILayoutWeakPtr> m_anchoredElements;
+    virtual void recalculateElementLayout(const UIElementPtr& element) = 0;
+    virtual void recalculateChildrenLayout(const UIElementPtr& parent) = 0;
 };
 
-#endif // UILAYOUT_H
+#endif // UILAYOUT_H
\ No newline at end of file
diff --git a/src/framework/ui/uiloader.cpp b/src/framework/ui/uiloader.cpp
index 3b2cdd5b..37cf9a7b 100644
--- a/src/framework/ui/uiloader.cpp
+++ b/src/framework/ui/uiloader.cpp
@@ -28,6 +28,7 @@
 #include <ui/uiloader.h>
 #include <script/luascript.h>
 #include <script/luafunctions.h>
+#include "uianchorlayout.h"
 
 UIElementPtr UILoader::createElementFromId(const std::string& id)
 {
@@ -206,22 +207,22 @@ void UILoader::loadElement(const UIElementPtr& element, const YAML::Node& node)
     }
 
     if(node.FindValue("anchors.left"))
-        loadElementAnchor(element, ANCHOR_LEFT, node["anchors.left"]);
+        loadElementAnchor(element, UI::AnchorLeft, node["anchors.left"]);
 
     if(node.FindValue("anchors.right"))
-        loadElementAnchor(element, ANCHOR_RIGHT, node["anchors.right"]);
+        loadElementAnchor(element, UI::AnchorRight, node["anchors.right"]);
 
     if(node.FindValue("anchors.top"))
-        loadElementAnchor(element, ANCHOR_TOP, node["anchors.top"]);
+        loadElementAnchor(element, UI::AnchorTop, node["anchors.top"]);
 
     if(node.FindValue("anchors.bottom"))
-        loadElementAnchor(element, ANCHOR_BOTTOM, node["anchors.bottom"]);
+        loadElementAnchor(element, UI::AnchorBottom, node["anchors.bottom"]);
 
     if(node.FindValue("anchors.horizontalCenter"))
-        loadElementAnchor(element, ANCHOR_HORIZONTAL_CENTER, node["anchors.horizontalCenter"]);
+        loadElementAnchor(element, UI::AnchorHorizontalCenter, node["anchors.horizontalCenter"]);
 
     if(node.FindValue("anchors.verticalCenter"))
-        loadElementAnchor(element, ANCHOR_VERTICAL_CENTER, node["anchors.verticalCenter"]);
+        loadElementAnchor(element, UI::AnchorVerticalCenter, node["anchors.verticalCenter"]);
 
     // load events
     if(node.FindValue("onLoad")) {
@@ -261,8 +262,14 @@ void UILoader::loadElement(const UIElementPtr& element, const YAML::Node& node)
     }
 }
 
-void UILoader::loadElementAnchor(const UIElementPtr& element, EAnchorType type, const YAML::Node& node)
+void UILoader::loadElementAnchor(const UIElementPtr& anchoredElement, UI::AnchorPoint anchoredEdge, const YAML::Node& node)
 {
+    UIAnchorLayoutPtr layout = boost::dynamic_pointer_cast<UIAnchorLayout>(anchoredElement->getLayout());
+    if(!layout) {
+        logError(YAML::Exception(node.GetMark(), "could not add anchor, because this element does not participate of an anchor layout").what());
+        return;
+    }
+
     std::string anchorDescription;
     node >> anchorDescription;
 
@@ -273,44 +280,16 @@ void UILoader::loadElementAnchor(const UIElementPtr& element, EAnchorType type,
         return;
     }
 
-    std::string relativeElementId = split[0];
-    std::string relativeAnchorTypeId = split[1];
-    EAnchorType relativeAnchorType;
-
-    if(relativeAnchorTypeId == "left")
-        relativeAnchorType = ANCHOR_LEFT;
-    else if(relativeAnchorTypeId == "right")
-        relativeAnchorType = ANCHOR_RIGHT;
-    else if(relativeAnchorTypeId == "top")
-        relativeAnchorType = ANCHOR_TOP;
-    else if(relativeAnchorTypeId == "bottom")
-        relativeAnchorType = ANCHOR_BOTTOM;
-    else if(relativeAnchorTypeId == "horizontalCenter")
-        relativeAnchorType = ANCHOR_HORIZONTAL_CENTER;
-    else if(relativeAnchorTypeId == "verticalCenter")
-        relativeAnchorType = ANCHOR_VERTICAL_CENTER;
-    else {
+    std::string anchorLineElementId = split[0];
+    UI::AnchorPoint anchorLineEdge = UIAnchorLayout::parseAnchorPoint(split[1]);
+
+    if(anchorLineEdge == UI::AnchorNone) {
         logError(YAML::Exception(node.GetMark(), "invalid anchor type").what());
         return;
     }
 
-    UILayoutPtr relativeElement;
-    if(relativeElementId == "parent" && element->getParent()) {
-        relativeElement = element->getParent()->asUILayout();
-    } else if(relativeElementId == "root") {
-        relativeElement = UIContainer::getRoot();
-    } else {
-        UIElementPtr tmp = element->backwardsGetElementById(relativeElementId);
-        if(tmp)
-            relativeElement = tmp->asUILayout();
-    }
-
-    if(relativeElement) {
-        if(!element->addAnchor(type, AnchorLine(relativeElement, relativeAnchorType)))
-            logError(YAML::Exception(node.GetMark(), "anchoring failed").what());
-    } else {
-        logError(YAML::Exception(node.GetMark(), "anchoring failed, does the relative element really exists?").what());
-    }
+    if(!layout->addAnchor(anchoredElement, anchoredEdge, AnchorLine(anchorLineElementId, anchorLineEdge)))
+        logError(YAML::Exception(node.GetMark(), "anchoring failed").what());
 }
 
 void UILoader::loadButton(const UIButtonPtr& button, const YAML::Node& node)
diff --git a/src/framework/ui/uiloader.h b/src/framework/ui/uiloader.h
index f0663a76..f5bf29ca 100644
--- a/src/framework/ui/uiloader.h
+++ b/src/framework/ui/uiloader.h
@@ -50,7 +50,7 @@ private:
     static void loadElement(const UIElementPtr& element, const YAML::Node& node);
 
     /// Load anchor from a YAML node
-    static void loadElementAnchor(const UIElementPtr& element, EAnchorType type, const YAML::Node& node);
+    static void loadElementAnchor(const UIElementPtr& anchoredElement, UI::AnchorPoint anchoredEdge, const YAML::Node& node);
 
     // specific elements loading
     static void loadButton(const UIButtonPtr& button, const YAML::Node& node);
diff --git a/src/framework/ui/uiskins.cpp b/src/framework/ui/uiskins.cpp
index 84d9ca33..dabf160a 100644
--- a/src/framework/ui/uiskins.cpp
+++ b/src/framework/ui/uiskins.cpp
@@ -136,7 +136,7 @@ void UISkins::terminate()
 }
 
 
-UIElementSkinPtr UISkins::getElementSkin(UI::EElementType elementType, const std::string& name)
+UIElementSkinPtr UISkins::getElementSkin(UI::ElementType elementType, const std::string& name)
 {
     for(auto it = m_elementSkins.begin(); it != m_elementSkins.end(); ++it) {
         const UIElementSkinPtr& skin = (*it);
diff --git a/src/framework/ui/uiskins.h b/src/framework/ui/uiskins.h
index 9a27bed8..ac17a279 100644
--- a/src/framework/ui/uiskins.h
+++ b/src/framework/ui/uiskins.h
@@ -37,7 +37,7 @@ public:
     void load(const std::string& skinsFile);
     void terminate();
 
-    UIElementSkinPtr getElementSkin(UI::EElementType elementType, const std::string& name = "default");
+    UIElementSkinPtr getElementSkin(UI::ElementType elementType, const std::string& name = "default");
     TexturePtr getDefaultTexture() { return m_defaultTexture; }
 
 private:
diff --git a/src/framework/ui/uitextedit.cpp b/src/framework/ui/uitextedit.cpp
index 0077aa5c..533c0332 100644
--- a/src/framework/ui/uitextedit.cpp
+++ b/src/framework/ui/uitextedit.cpp
@@ -60,10 +60,10 @@ void UITextEdit::onInputEvent(const InputEvent& event)
     }
 }
 
-void UITextEdit::onLayoutRectChange(const Rect& rect)
+void UITextEdit::onRectUpdate()
 {
     UITextEditSkin *skin = static_cast<UITextEditSkin*>(getSkin().get());
-    Rect textRect = rect;
+    Rect textRect = getRect();
     int margin = skin->getTextMargin();
     textRect.setLeft(textRect.left()+margin);
     textRect.setRight(textRect.right()-margin);
diff --git a/src/framework/ui/uitextedit.h b/src/framework/ui/uitextedit.h
index 8bd6e2ef..959fa703 100644
--- a/src/framework/ui/uitextedit.h
+++ b/src/framework/ui/uitextedit.h
@@ -37,7 +37,7 @@ public:
     UITextEdit();
 
     void onInputEvent(const InputEvent& event);
-    void onLayoutRectChange(const Rect& rect);
+    void onRectUpdate();
     void onFocusChange();
 
     void setText(const std::string& text);
diff --git a/src/framework/util/size.h b/src/framework/util/size.h
index 751f3d82..eb3aedc6 100644
--- a/src/framework/util/size.h
+++ b/src/framework/util/size.h
@@ -38,7 +38,7 @@ template <class T>
 class TSize
 {
 public:
-    inline TSize() : wd(0), ht(0) {};
+    inline TSize() : wd(-1), ht(-1) {};
     inline TSize(T width, T height) : wd(width), ht(height) { };
     inline TSize(const TSize<T>& other) : wd(other.wd), ht(other.ht) { };