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com/yahoo/astra/fl/controls/containerClasses/MessageBox.as

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+/*
+Copyright (c) 2009 Yahoo! Inc.  All rights reserved.  
+The copyrights embodied in the content of this file are licensed under the BSD (revised) open source license
+*/
+package com.yahoo.astra.fl.controls.containerClasses
+{
+	import flash.text.TextField;
+	import flash.text.TextFormat;
+	import flash.text.TextFieldAutoSize;
+	import fl.core.UIComponent;
+
+	//--------------------------------------
+	//  Styles
+	//--------------------------------------
+	
+   /**
+    * The <code>TextFormat</code> object that will be applied to the text.
+    *
+    * @default new TextFormat("_sans", 11, 0xffffff)
+    */
+   [Style(name="textFormat", type="TextFormat", inherit="no")]
+   
+	//--------------------------------------
+	//  Class description
+	//--------------------------------------
+
+	/**
+	 * MessageBox extends UIComponent and creates a text field based on minimum and 
+	 * maximum widths<
+	 *
+	 * @see fl.core.UIComponent
+	 *
+     * @langversion 3.0
+     * @playerversion Flash 9.0.28.0
+     * @author Dwight Bridges	
+	 */	
+	public class MessageBox extends UIComponent
+	{
+
+	//--------------------------------------
+	//  Constructor
+	//--------------------------------------
+
+		/**
+		 * Constructor
+		 */
+		public function MessageBox()
+		{
+			_textField = new TextField();
+			_autoSizeStyle = TextFieldAutoSize.CENTER;
+			this.setStyle("textFormat", defaultStyles["textFormat"] as TextFormat);
+		}
+
+	//--------------------------------------
+	//  Properties
+	//--------------------------------------
+	
+		/**
+		 * @private (protected)
+		 */
+		protected var _textField:TextField;	
+		
+		/**
+		 * Gets the value of the text field. (read-only)
+		 */
+		public function get textField():TextField
+		{
+			return _textField;
+		}		
+		
+		/**
+		 * @private (protected)
+		 */		
+		protected var _autoSizeStyle:String;
+		
+		/**
+		 * Gets or sets autoSizeStyle
+		 */
+		public function get autoSizeStyle():String
+		{
+			return _autoSizeStyle;	
+		}
+		
+		/**
+		 * @private (setter)
+		 */	
+		public function set autoSizeStyle(value:String):void {_autoSizeStyle = value;}		
+		
+		/**
+		 * @private
+		 */
+		private var defaultStyles:Object = 
+		{
+			textFormat:new TextFormat("_sans", 11, 0xffffff)
+		}
+		 
+		
+	//--------------------------------------
+	//  Public Methods
+	//--------------------------------------		
+
+		/**
+		 * Displays the message text and updates the height of the MessageBox
+		 *
+		 * @param maxTextWidth - maximum width allowed for textfield		 
+		 * @param minTextWidth - minimum width allowed for textfield
+		 * @param messageText - string to display in the text field
+		 */ 
+		public function drawMessage(maxTextWidth:int, minTextWidth:int, messageText:String):void
+		{
+			var textFieldWidth:int = getTextFieldWidth(messageText, maxTextWidth, minTextWidth);
+			_textField.multiline = false;
+			_textField.wordWrap = true;
+			_textField.autoSize = _autoSizeStyle;
+			_textField.width = textFieldWidth;
+			_textField.height = 5;
+			var tF:TextFormat = getStyle("textFormat") as TextFormat;
+			tF.align = _autoSizeStyle;
+			_textField.defaultTextFormat = tF;
+			_textField.text = messageText;
+			this.width = _textField.width;
+		}
+	
+	//--------------------------------------
+	//  Protected Methods
+	//--------------------------------------
+		
+		/**
+		 * @private (protected)
+		 * Gets the width of the text field.
+		 *
+		 * @param message - text to use
+		 * @param maxTextWidth - maximum width allowed for textfield		 
+		 * @paramminTextWidth - minimum width allowed for textfield		 
+		 *
+		 * @return int
+		 */
+		protected function getTextFieldWidth(message:String, maxTextWidth:int, minTextWidth:int):int
+		{
+			var textFieldWidth:int;
+			var tempText:TextField = new TextField();
+			var tF:TextFormat = new TextFormat("_sans", 11);
+			tF.align = _autoSizeStyle;	
+			tempText.defaultTextFormat = this.getStyle("textFormat") as TextFormat;			
+			tempText.width = 10;
+			tempText.height = 5;
+			tempText.wordWrap = false;
+			tempText.multiline = false;
+			tempText.autoSize = TextFieldAutoSize.LEFT;
+			tempText.text = message;
+			var tempTextWidth:int = Math.round(tempText.width);
+			if(tempTextWidth > maxTextWidth)
+			{
+				textFieldWidth = maxTextWidth;				
+			}
+			else if(tempTextWidth > minTextWidth)
+			{
+				textFieldWidth = tempTextWidth;
+			}
+			else
+			{
+				textFieldWidth = minTextWidth;
+			}		
+			if(_autoSizeStyle == TextFieldAutoSize.LEFT) textFieldWidth += 1;
+			return textFieldWidth;			
+		}		
+	}
+}