Moved these here from inside metasoy.

Grid changed into GridUtil.


git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@143 ed5b42cb-e716-0410-a449-f6a68f950b19

src/as/com/threerings/flex/GridUtil.as

@@ -0,0 +1,67 @@
+package com.threerings.flex {
+
+import mx.containers.Grid;
+import mx.containers.GridItem;
+import mx.containers.GridRow;
+
+import mx.controls.Label;
+
+import mx.core.UIComponent;
+
+/**
+ * Convenience methods for adding children to Grids.
+ */
+public class GridUtil
+{
+    /**
+     * Add a new row to the grid, containing the specified
+     * components.
+     * 
+     * @param specs a list of components or Strings, or you can follow
+     * any component with a two-dimensional array that specifies
+     * grid width/height.
+     *
+     * Example: addRow(grid, "labeltxt", _entryField, _bigThing, [2, 2], _smallThing);
+     *
+     * All will be put in the same row, but bigThing will have
+     *  colspan=2 rowspan=2
+     */
+    public static function addRow (grid :Grid, ... specs) :GridRow
+    {
+        var row :GridRow = new GridRow();
+        var lastItem :GridItem;
+        for each (var o :Object in specs) {
+            if (o is String) {
+                var lbl :Label = new Label();
+                lbl.text = String(o);
+                o = lbl;
+            }
+            if (o is UIComponent) {
+                lastItem = addToRow(row, UIComponent(o));
+
+            } else if (o is Array) {
+                var arr :Array = (o as Array);
+                lastItem.colSpan = int(arr[0]);
+                lastItem.rowSpan = int(arr[1]);
+
+            } else {
+                throw new ArgumentError();
+            }
+        }
+        grid.addChild(row);
+        return row;
+    }
+
+    /**
+     * A convenience function to the specified component to the
+     * specified row.
+     */
+    public static function addToRow (row :GridRow, comp :UIComponent) :GridItem
+    {
+        var item :GridItem = new GridItem();
+        item.addChild(comp);
+        row.addChild(item);
+        return item;
+    }
+}
+}