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297
com/yahoo/astra/fl/controls/menuBarClasses/MenuButton.as
Executable file
297
com/yahoo/astra/fl/controls/menuBarClasses/MenuButton.as
Executable file
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/*
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Copyright (c) 2009 Yahoo! Inc. All rights reserved.
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The copyrights embodied in the content of this file are licensed under the BSD (revised) open source license
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*/
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package com.yahoo.astra.fl.controls.menuBarClasses
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{
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import flash.display.DisplayObject;
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import fl.controls.Button;
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import fl.core.InvalidationType;
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import fl.events.ComponentEvent;
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import flash.events.Event;
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import flash.events.MouseEvent;
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import flash.text.TextFieldAutoSize;
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import flash.text.TextFormat;
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import com.yahoo.astra.utils.InstanceFactory;
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import com.yahoo.astra.fl.utils.UIComponentUtil;
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/**
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* A button type that extends Button and is designed for use with the MenuBar
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* component.
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*
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* @see com.yahoo.astra.fl.controls.MenuBar
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* @see fl.controls.Button
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*
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* @langversion 3.0
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* @playerversion Flash 9.0.28.0
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* @author Dwight Bridges
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*/
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public class MenuButton extends Button
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{
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//--------------------------------------
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// Constructor
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//--------------------------------------
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/**
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* Constructor.
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*/
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public function MenuButton()
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{
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super();
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}
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//--------------------------------------
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// Static Properties
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//--------------------------------------
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/**
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* @private
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*/
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private static var defaultStyles:Object =
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{
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icon: null,
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upSkin: "MenuButton_upSkin",
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downSkin: "MenuButton_downSkin",
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overSkin: "MenuButton_overSkin",
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disabledSkin: "MenuButton_disabledSkin",
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selectedUpSkin: "MenuButton_selectedUpSkin",
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selectedDownSkin: "MenuButton_selectedUpSkin",
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selectedOverSkin: "MenuButton_selectedUpSkin",
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selectedDisabledSkin: "MenuButton_selectedDisabledSkin",
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left_upSkin: "MenuButtonLeft_upSkin",
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left_overSkin: "MenuButtonLeft_overSkin",
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left_downSkin: "MenuButtonLeft_downSkin",
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right_upSkin: "MenuButtonRight_upSkin",
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right_overSkin: "MenuButtonRight_overSkin",
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right_downSkin: "MenuButtonRight_downSkin",
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focusRectSkin: null,
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focusRectPadding: null,
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textFormat: null,
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disabledTextFormat: null,
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embedFonts: null,
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textPadding: 10,
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verticalTextPadding: 2
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};
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//--------------------------------------
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// Properties
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//--------------------------------------
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/**
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* @private
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* This component will resize based on the size of its label.
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*/
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override public function set label(value:String):void
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{
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this._label = value;
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this.invalidate(InvalidationType.SIZE);
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this.invalidate(InvalidationType.STYLES);
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this.dispatchEvent(new ComponentEvent(ComponentEvent.LABEL_CHANGE));
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}
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/**
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* Indicates that the button is the first button in the row.
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*/
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public var leftButton:Boolean = false;
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/**
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* Indicates that the button is the last button in the row.
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*/
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public var rightButton:Boolean = false;
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/**
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* @private (protected)
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*/
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protected var explicitWidth:Number = NaN;
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/**
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* @private (setter)
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*/
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override public function set width(value:Number):void
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{
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this.explicitWidth = value;
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}
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//--------------------------------------
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// Static Methods
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//--------------------------------------
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/**
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* @copy fl.core.UIComponent#getStyleDefinition()
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*
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* @includeExample ../core/examples/UIComponent.getStyleDefinition.1.as -noswf
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*
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* @see fl.core.UIComponent#getStyle()
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* @see fl.core.UIComponent#setStyle()
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* @see fl.managers.StyleManager
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*
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* @langversion 3.0
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* @playerversion Flash 9.0.28.0
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*/
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public static function getStyleDefinition():Object
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{
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return defaultStyles;
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}
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//--------------------------------------
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// Public Methods
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//--------------------------------------
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/**
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* @private
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* Adds a check for uiFocusRect that doesn't exist in Button's drawFocus
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*/
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override public function drawFocus(focused:Boolean):void
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{
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if(!this.uiFocusRect)
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{
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return;
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}
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super.drawFocus(focused);
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}
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/**
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* @private
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* When a button is selected, it cannot be deselected.
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*/
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override protected function toggleSelected(event:MouseEvent):void
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{
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if(!this.selected)
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{
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this.selected = true;
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this.dispatchEvent(new Event(Event.CHANGE));
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}
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}
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/**
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* @private (protected)
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*
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* @langversion 3.0
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* @playerversion Flash 9.0.28.0
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*
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*/
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//On the MOUSE_UP event, we will set the state to down if the button is selected.
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override protected function mouseEventHandler(event:MouseEvent):void
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{
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if (event.type == MouseEvent.MOUSE_DOWN)
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{
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setMouseState("down");
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startPress();
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}
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else if (event.type == MouseEvent.ROLL_OVER)
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{
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if(_selected)
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{
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setMouseState("down");
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}
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else
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{
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setMouseState("over");
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}
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endPress();
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}
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else if (event.type == MouseEvent.MOUSE_UP)
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{
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if(_selected)
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{
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setMouseState("down");
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}
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else
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{
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setMouseState("over");
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}
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endPress();
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}
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else if (event.type == MouseEvent.ROLL_OUT)
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{
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if(_selected)
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{
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setMouseState("down");
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}
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else
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{
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setMouseState("up");
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}
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endPress();
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}
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}
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/**
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* @private (protected)
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*
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* @langversion 3.0
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* @playerversion Flash 9.0.28.0
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*/
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override protected function drawBackground():void
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{
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var styleName:String = (enabled) ? mouseState : "disabled";
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if (selected)
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{
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styleName = "selected"+styleName.substr(0,1).toUpperCase()+styleName.substr(1);
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}
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else
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{
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if(rightButton) styleName = "right_" + styleName;
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if(leftButton) styleName = "left_" + styleName;
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}
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styleName += "Skin";
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var bg:DisplayObject = background;
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background = getDisplayObjectInstance(getStyleValue(styleName));
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addChildAt(background, 0);
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if (bg != null && bg != background) { removeChild(bg); }
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}
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/**
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* @private
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*/
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override protected function draw():void
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{
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this.textField.autoSize = TextFieldAutoSize.LEFT;
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if(this.textField.text != this._label)
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{
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this.textField.text = this._label;
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}
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if(this.isInvalid(InvalidationType.STYLES))
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{
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var textFormat:TextFormat = this.getStyleValue("textFormat") as TextFormat
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if(textFormat != null) this.textField.setTextFormat(textFormat);
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}
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if(isNaN(this.explicitWidth))
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{
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//autosize if the width hasn't been explicitly set
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super.width = this.textField.width + (this.getStyleValue("textPadding") as Number) * 2;
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}
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else
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{
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//if we have an explicit width, use that instead
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super.width = this.explicitWidth;
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}
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this.textField.autoSize = TextFieldAutoSize.NONE;
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super.draw();
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}
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override public function setStyle(style:String, value:Object):void
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{
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//Use strict equality so we can set a style to null ... so if the instanceStyles[style] == undefined, null is still set.
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//We also need to work around the specific use case of TextFormats
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if (instanceStyles[style] === value && !(value is TextFormat)) { return; }
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if(value is InstanceFactory)
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{
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instanceStyles[style] = UIComponentUtil.getDisplayObjectInstance(this, (value as InstanceFactory).createInstance());
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}
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else
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{
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instanceStyles[style] = value;
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}
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invalidate(InvalidationType.STYLES);
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}
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}
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}
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