Flex中如何利用StyleManager.isColorName函数检查颜色名字是否合法的例子

By Minidxer | September 17, 2008

接下来的例子演示了Flex中如何利用StyleManager.isColorName函数检查颜色名字是否合法。

让我们先来看一下Demo（可以右键View Source或点击这里察看源代码）：

下面是完整代码(或点击这里察看)：

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
layout="vertical"
verticalAlign="middle"
backgroundColor="white">
<mx:Script>
<![CDATA[
import mx.styles.StyleManager;
import mx.utils.StringUtil;
private function button_click(evt:MouseEvent):void {
/* Remove leading and trailing whitespace. */
var str:String = StringUtil.trim(textInput.text);
var isColor:Boolean = StyleManager.isColorName(str);
/* If it is a valid color, set the background color
and remove the error string, if any. Else, set the
background color to the constant NOT_A_COLOR from
the StyleManager class and set the error string. */
if (isColor) {
box.setStyle("backgroundColor", str);
textInput.errorString = "";
} else {
box.setStyle("backgroundColor", StyleManager.NOT_A_COLOR);
textInput.errorString = "NOT A COLOR";
}
}
]]>
</mx:Script>
<mx:ApplicationControlBar dock="true">
<mx:Label text="Color name:" />
<mx:TextInput id="textInput" />
<mx:Button label="isColorName()"
fontFamily="_sans"
click="button_click(event);" />
</mx:ApplicationControlBar>
<mx:Box id="box" width="100%" height="100%" />
</mx:Application>

代码：Peter deHaan 翻译/整理/编译：中文Flex例子

Topics: Flex | No Comments » | 28 views Tags: isColorName(), registerColorName(), StringUtil, StyleManager, trim

中文Flex例子