ActionScript

Flex Int转String

Categories: Flex; Tagged with: ActionScript; @ April 24th, 2009 8:46

打印ABCD:

            	for(var i:int = 65; i < 69; i++) {
            		trace(String.fromCharCode(i));
            	}

结果:

Flex: 通过监听Event实现UI组件的Validation

Categories: Flex; Tagged with: ActionScript • Validation; @ April 23rd, 2009 14:28

textInputScore.addEventListener(Event.CHANGE, onTextInputScoreChange); // 监听Change事件
	// 检测成绩输入是否有效: 1. 必须为Number; 2. 必须小于最高分

		//if(isNaN(parseFloat(textInputScore.text))) { //错误, 形如2w之类将不报错....
		if(isNaN(Number(textInputScore.text))) {
			textInputScore.errorString = RM.getString(BUNDEL_ONLINETEST, "olt.grading.errorMessage.nan", [textInputScore.text]);
		}else if(parseFloat(textInputScore.text) > _questionAttempt.question.marksCorrrect) {
			textInputScore.errorString = RM.getString(BUNDEL_ONLINETEST, "olt.grading.errormessage.outScop", [textInputScore.text, _questionAttempt.question.marksCorrrect]);
		}else {
			textInputScore.errorString = null;
		}
	}

Flex中的as与显示转换对比

Categories: Flex; Tagged with: ActionScript • 数据类型转换; @ March 29th, 2009 16:08

在As中, 可以使用as与显示转换两种方式进行转换

如下:

            	var str:String = "10";
            	trace(str as int);
            	trace(int(str));

输出: null 10

在使用as时, 如果类型不同, 则会返回null,

在使用int()之类的显示转换时时, 会尝试将其转换为对应类型. 如果无法进行转换则返回该类型的默认值

Flex: Tree如何展开/关闭一个节点, 并选中其孩子?　如何关闭所有的节点？

Categories: Flex; Tagged with: ActionScript • Tree; @ March 28th, 2009 10:54

_treeOUs.expandChildrenOf(currentOU, true); // 展开目录 

_treeOUs.selectedItem = ou; //选定孩子

_treeOUs.openItems = []; // 关闭所有节点;

expandChildrenOf(item:Object, open:Boolean):void
Opens or closes all the tree items below the specified item.

expandItem(item:Object, open:Boolean, animate:Boolean = false, dispatchEvent:Boolean = false, cause:Event = null):void
Opens or closes a branch item.

AIR: 通过监听ContextMenuEvent.MENU_SELECT事件动态改变菜单内容

Categories: Flex; Tagged with: ActionScript • Air Menu • ContextMenu • Flex Menu • Flex右键 • NativeMenu; @ March 26th, 2009 9:47

某Tree上的menu

		_menu = new NativeMenu();
		_menuAddTopOU = new NativeMenuItem("Add Top OU");
		_menuAdd = new NativeMenuItem("Selcet one OU ls");
		_menu.addItem(_menuAddTopOU);
		_menu.addItem(_menuAdd);
		_menu.addEventListener(ContextMenuEvent.MENU_SELECT, onMenuSelected);
		_menu.addEventListener(Event.SELECT, onMenuItemSelected);
		_treeOUs.contextMenu = _menu;

监听函数:

	// Menu打开后动态改变菜单内容
	private function onMenuSelected(event:ContextMenuEvent):void {
		var currentOU:OrgUnit = _treeOUs.selectedItem as OrgUnit;
		_menuAdd.enabled = _actionAdd.enabled;
		if(_menuAdd.enabled) {
			_menuAdd.label = "Add OU in " + currentOU.nameFullLocalized;
		}else {
			_menuAdd.label = "Select one UP first";
		}
	}
	
	// 选中Menu中某item后响应
	private function onMenuItemSelected(event:Event):void {
		if(event.target == _menuAddTopOU) {
			trace("右键点击增加顶级部门");
			onAction(_actionAddTopOU, null);
		}else if(event.target == _menuAdd) {
			trace("增加子部门");
			onAction(_actionAdd, null);
		}
	}

Newer Posts <-> Older Posts

Flex Int转String

Flex: 通过监听Event实现UI组件的Validation

Flex中的as与显示转换 对比

Flex: Tree如何展开/关闭一个节点, 并选中其孩子? 如何关闭所有的节点？

AIR: 通过监听ContextMenuEvent.MENU_SELECT事件 动态改变菜单内容

Flex中的as与显示转换对比

Flex: Tree如何展开/关闭一个节点, 并选中其孩子?　如何关闭所有的节点？

AIR: 通过监听ContextMenuEvent.MENU_SELECT事件动态改变菜单内容