Allow an already-instantiated IFlexDisplayObject to be used as the icon

for a menu item. JFC, this is pretty straightforward but was a fiasco
to get right because I was using a MediaWrapper as the icon, and something
wasn't playing nicely (not yet debugged), but the error looked like
it was with the Menu superclass.

Also set all CommandMenus to have variableRowHeight.


git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@266 ed5b42cb-e716-0410-a449-f6a68f950b19

src/as/com/threerings/flex/CommandMenu.as

@@ -28,17 +28,29 @@ import flash.events.IEventDispatcher;
 import flash.geom.Rectangle;
 
 import mx.controls.Menu;
+import mx.controls.listClasses.BaseListData;
+import mx.controls.listClasses.IListItemRenderer;
+import mx.controls.menuClasses.IMenuItemRenderer;
+
 import mx.core.mx_internal;
 import mx.core.Application;
+import mx.core.ClassFactory;
+import mx.core.IFlexDisplayObject;
 import mx.core.ScrollPolicy;
+
 import mx.events.MenuEvent;
 
+import mx.managers.PopUpManager;
+
 import mx.utils.ObjectUtil;
 
 import flexlib.controls.ScrollableArrowMenu;
 
 import com.threerings.util.CommandEvent;
 
+import com.threerings.flex.menuClasses.CommandMenuItemRenderer;
+import com.threerings.flex.menuClasses.CommandListData;
+
 use namespace mx_internal;
 
 /**
@@ -47,6 +59,10 @@ use namespace mx_internal;
  * specify "callback" properties that specify a function closure to call, with the "arg" property
  * containing either a single arg or an array of args.
  *
+ * Another property now supported is "iconObject", which is an already-instantiated
+ * IFlexDisplayObject to use as the icon. This will only be applied if the "icon" property
+ * (which specifies a Class) is not used.
+ *
  * Example dataProvider array:
  * [ { label: "Go home", icon: homeIconClass,
  *     command: Controller.GO_HOME, arg: homeId },
@@ -77,6 +93,10 @@ public class CommandMenu extends ScrollableArrowMenu
     public function CommandMenu ()
     {
         super();
+        variableRowHeight = true;
+
+        itemRenderer = new ClassFactory(CommandMenuItemRenderer);
+
         verticalScrollPolicy = ScrollPolicy.OFF;
         addEventListener(MenuEvent.ITEM_CLICK, itemClicked);
     }
@@ -147,6 +167,61 @@ public class CommandMenu extends ScrollableArrowMenu
         // else: no warning. There may be non-command menu items mixed in.
     }
 
+    // from ScrollableArrowMenu..
+    override mx_internal function openSubMenu (row :IListItemRenderer) :void
+    {
+        supposedToLoseFocus = true;
+
+        var r :Menu = getRootMenu();
+        var menu :CommandMenu;
+
+        // check to see if the menu exists, if not create it
+        if (!IMenuItemRenderer(row).menu)
+        {
+            /* The only differences between this method and the original method in mx.controls.Menu
+             * are these few lines.
+             */
+            menu = new CommandMenu();
+            menu.maxHeight = this.maxHeight;
+            menu.verticalScrollPolicy = this.verticalScrollPolicy;
+            menu.arrowScrollPolicy = this.arrowScrollPolicy;
+
+            menu.parentMenu = this;
+            menu.owner = this;
+            menu.showRoot = showRoot;
+            menu.dataDescriptor = r.dataDescriptor;
+            menu.styleName = r;
+            menu.labelField = r.labelField;
+            menu.labelFunction = r.labelFunction;
+            menu.iconField = r.iconField;
+            menu.iconFunction = r.iconFunction;
+            menu.itemRenderer = r.itemRenderer;
+            menu.rowHeight = r.rowHeight;
+            menu.scaleY = r.scaleY;
+            menu.scaleX = r.scaleX;
+
+            // if there's data and it has children then add the items
+            if (row.data && _dataDescriptor.isBranch(row.data) &&
+                    _dataDescriptor.hasChildren(row.data)) {
+                menu.dataProvider = _dataDescriptor.getChildren(row.data);
+            }
+            menu.sourceMenuBar = sourceMenuBar;
+            menu.sourceMenuBarItem = sourceMenuBarItem;
+
+            IMenuItemRenderer(row).menu = menu;
+            PopUpManager.addPopUp(menu, r, false);
+        }
+
+        super.openSubMenu(row);
+    }
+
+    // from List
+    override protected function makeListData (data :Object, uid :String, rowNum :int) :BaseListData
+    {
+        return new CommandListData(itemToLabel(data), itemToIcon(data),
+            getItemProp(data, "iconObject") as IFlexDisplayObject, labelField, uid, this, rowNum);
+    }
+
     /**
      * Get the specified property for the specified item, if any.  Somewhat similar to bits in the
      * DefaultDataDescriptor.