add menu example in playerground module

modules/playground/filemenu.otui

@@ -0,0 +1,10 @@
+Panel
+  layout: verticalBox
+  size: 64 48
+
+  MenuButton
+    text: New
+
+  MenuButton
+    text: Quit
+    onClick: exit()

modules/playground/menubar.otui

@@ -0,0 +1,29 @@
+MenuButton < UIButton
+  color: white
+  size: 40 18
+  align: center
+  border-image:
+    source: /core_styles/images/menu.png
+    size: 64 24
+
+  state.hover:
+    border-image:
+      source: /core_styles/images/menu.png
+      offset: 0 24
+      size: 64 24
+    color: black
+
+TopMenuButton < MenuButton
+  onMousePress: |
+    function(self, mousePos, mouseButton)
+      local popupMenu = UI.loadAndDisplay(self:getStyle()['popup menu'])
+      if popupMenu then
+        popupMenu:moveTo({ x = self:getX(), y = self:getY() + self:getHeight()})
+        popupMenu.onMouseRelease = function(self) self:destroy() end
+      end
+    end
+
+TopMenuButton
+  text: File
+  position: 80 0
+  popup menu: /playground/filemenu.otui

modules/playground/playground.lua

@@ -1 +1,10 @@
--- place any code for testing purposes here
+-- place any code for testing purposes here
+
+function displayMenuPopup(file, parent)
+end
+
+local function init()
+  UI.loadAndDisplay('/playground/menubar.otui')
+end
+
+addEvent(init)

src/framework/luascript/luafunctions.cpp

@@ -48,6 +48,8 @@ void LuaInterface::registerFunctions()
     g_lua.bindClassMemberFunction<UIWidget>("getSize", &UIWidget::getSize);
     g_lua.bindClassMemberFunction<UIWidget>("setSize", &UIWidget::resize);
     g_lua.bindClassMemberFunction<UIWidget>("getPosition", &UIWidget::getPosition);
+    g_lua.bindClassMemberFunction<UIWidget>("getX", &UIWidget::getX);
+    g_lua.bindClassMemberFunction<UIWidget>("getY", &UIWidget::getY);
     g_lua.bindClassMemberFunction<UIWidget>("moveTo", &UIWidget::moveTo);
     g_lua.bindClassMemberFunction<UIWidget>("moveChildToIndex", &UIWidget::moveChildToIndex);
     g_lua.bindClassMemberFunction<UIWidget>("getParent", &UIWidget::getParent);
@@ -59,6 +61,7 @@ void LuaInterface::registerFunctions()
     g_lua.bindClassMemberFunction<UIWidget>("getOpacity", &UIWidget::getOpacity);
     g_lua.bindClassMemberFunction<UIWidget>("setOpacity", &UIWidget::setOpacity);
     g_lua.bindClassMemberFunction<UIWidget>("setStyle", &UIWidget::setStyle);
+    g_lua.bindClassMemberFunction<UIWidget>("applyStyle", &UIWidget::applyStyle);
     g_lua.bindClassMemberFunction<UIWidget>("getStyle", &UIWidget::getStyle);
     g_lua.bindClassMemberFunction<UIWidget>("getMarginTop", &UIWidget::getMarginTop);
     g_lua.bindClassMemberFunction<UIWidget>("setMarginTop", &UIWidget::setMarginTop);

src/framework/luascript/luavaluecasts.cpp

@@ -252,6 +252,29 @@ void push_luavalue(const OTMLNodePtr& node)
         g_lua.pushNil();
 }
 
+bool luavalue_cast(int index, OTMLNodePtr& node)
+{
+    node = OTMLNode::create();
+    node->setUnique(true);
+    if(g_lua.isTable(index)) {
+        g_lua.pushNil();
+        while(g_lua.next(index < 0 ? index-1 : index)) {
+            std::string cnodeName = g_lua.toString(-2);
+            if(g_lua.isTable()) {
+                OTMLNodePtr cnode;
+                if(luavalue_cast(-1, node)) {
+                    cnode->setTag(cnodeName);
+                    node->addChild(cnode);
+                }
+            } else
+                node->writeAt(cnodeName, g_lua.toString());
+            g_lua.pop();
+        }
+    } else
+        return false;
+    return true;
+}
+
 // object ptr
 bool luavalue_cast(int index, LuaObjectPtr& obj) {
     if(g_lua.isUserdata(index)) {

src/framework/luascript/luavaluecasts.h

@@ -70,6 +70,7 @@ bool luavalue_cast(int index, Size& size);
 
 // otml nodes
 void push_luavalue(const OTMLNodePtr& node);
+bool luavalue_cast(int index, OTMLNodePtr& node);
 
 // enum
 template<class T>

src/framework/ui/uiwidget.cpp

@@ -75,8 +75,10 @@ void UIWidget::setup()
 void UIWidget::destroy()
 {
     // remove itself from parent
-    if(UIWidgetPtr parent = getParent())
-        parent->removeChild(asUIWidget());
+    if(UIWidgetPtr parent = getParent()) {
+        if(parent->hasChild(asUIWidget()))
+            parent->removeChild(asUIWidget());
+    }
     setVisible(false);
     setEnabled(false);
 }
@@ -680,10 +682,10 @@ void UIWidget::updateState(Fw::WidgetState state)
 
         updateStyle();
 
-        if(state == Fw::FocusState)
-            onFocusChange(newStatus, m_lastFocusReason);
-        else if(state == Fw::HoverState)
-            onHoverChange(newStatus);
+        if(state == Fw::FocusState) {
+            g_dispatcher.addEvent(std::bind(&UIWidget::onFocusChange, asUIWidget(), newStatus, m_lastFocusReason));
+        } else if(state == Fw::HoverState)
+            g_dispatcher.addEvent(std::bind(&UIWidget::onHoverChange, asUIWidget(), newStatus));
     }
 }
 
@@ -884,6 +886,7 @@ void UIWidget::onStyleApply(const OTMLNodePtr& styleNode)
                 anchorLayout->addAnchor(asUIWidget(), anchoredEdge, hookedWidgetId, hookedEdge);
             }
         } else if(node->tag() == "onClick" ||
+                  node->tag() == "onMousePress" ||
                   node->tag() == "onHoverChange") {
             g_lua.loadFunction(node->value(), "@" + node->source() + "[" + node->tag() + "]");
             luaSetField(node->tag());