Ray Greenwell
ce7a1c9cb8
git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@618 ed5b42cb-e716-0410-a449-f6a68f950b19
118 lines
3.6 KiB
ActionScript
118 lines
3.6 KiB
ActionScript
//
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// $Id$
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//
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// Nenya library - tools for developing networked games
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// Copyright (C) 2002-2007 Three Rings Design, Inc., All Rights Reserved
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// http://www.threerings.net/code/nenya/
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//
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// This library is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License as published
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// by the Free Software Foundation; either version 2.1 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package com.threerings.flex {
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import mx.containers.Grid;
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import mx.containers.GridItem;
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import mx.containers.GridRow;
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import mx.controls.Label;
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import mx.core.UIComponent;
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/**
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* Convenience methods for adding children to Grids.
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*/
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public class GridUtil
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{
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/**
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* Add a new row to the grid, containing the specified
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* components.
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*
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* @param specs a list of components or Strings, or you can follow
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* any component with a two-dimensional array that specifies
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* grid width/height.
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*
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* Example: addRow(grid, "labeltxt", _entryField, _bigThing, [2, 2], _smallThing);
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*
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* All will be put in the same row, but bigThing will have
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* colspan=2 rowspan=2
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*/
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public static function addRow (grid :Grid, ... specs) :GridRow
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{
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var row :GridRow = new GridRow();
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var lastItem :GridItem;
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for each (var o :Object in specs) {
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if (o is String) {
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var lbl :Label = new Label();
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lbl.text = String(o);
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o = lbl;
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}
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if (o is UIComponent) {
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lastItem = addToRow(row, UIComponent(o));
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} else if (o is Array) {
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var arr :Array = (o as Array);
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lastItem.colSpan = int(arr[0]);
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lastItem.rowSpan = int(arr[1]);
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} else {
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throw new ArgumentError();
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}
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}
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grid.addChild(row);
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return row;
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}
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/**
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* Add a child to the specified grid row, returning the
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* GridItem created for containment of the child.
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*/
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public static function addToRow (row :GridRow, comp :UIComponent) :GridItem
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{
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var item :GridItem = new GridItem();
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item.addChild(comp);
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row.addChild(item);
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return item;
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}
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/**
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* Get the number of cells in a grid.
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*/
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public static function getCellCount (grid :Grid) :int
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{
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var count :int = 0;
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for (var ii :int = 0; ii < grid.numChildren; ii++) {
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count += (grid.getChildAt(ii) as GridRow).numChildren;
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}
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return count;
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}
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/**
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* Return the contents of the specified cell. Not super fast, as it
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* checks each row in order.
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*/
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public static function getCellAt (grid :Grid, index :int) :UIComponent
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{
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for (var ii :int = 0; ii < grid.numChildren; ii++) {
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var row :GridRow = grid.getChildAt(ii) as GridRow;
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if (index < row.numChildren) {
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return (row.getChildAt(index) as GridItem).getChildAt(0) as UIComponent;
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} else {
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index -= row.numChildren; // and then on to the next row
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}
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}
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return null; // never found it. throw an out-of-range error?
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}
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}
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}
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