Tree

Flex: CheckBox Tree

Categories: Flex; Tagged with: ActionScript • Flex • Tree • Tree Checkbox; @ March 7th, 2010 20:14

07/2011 Update: 已更新下载链接. 无法访问box.net的朋友可使用dbank的链接进行下载.

效果与功能:

1. 简单配置数据源即可实现多层显示
2. 可设定初始选定的项目或目录
3. 获得选定的项目

(more…)

Flex Tree ToolTip 设定

Categories: Flex; Tagged with: ActionScript • dataTipFunction • Flex • ToolTip • Tree; @ October 14th, 2009 17:18

为节点或叶子设定其特有之ToolTip:

	// Constructor
	public function TreeForCodeMaintain(codeMaintainService_:ICodeMaintainService) {
		super();
		_codeMaintainService = codeMaintainService_;
		dataProvider =  dataProvider = ["code1", "code2", "code3", ["folder1", ["subCode1", "subCode2", ["subFolder1", ["sc1", "sc2"]]]]];
		dataDescriptor = new TreeDDForCodeMaintain();
		labelFunction = labelFunForTree;
		dataTipFunction = dataTipFunctionForTreeCode;
		showDataTips = true;
	}
	
	protected function dataTipFunctionForTreeCode(item:Object):String {
		if(item is Array) {
			return String(item[0]);
		}
		// return item.toString();
		return AppContext.getInstance().metaDomain.getEntityByName(String(item)).descriptionLocalized;
	}

效果:

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.

Flex Tree样式: 如何修改Tree的Icon

Categories: Flex; Tagged with: ActionScript • Flex • Icon • Tree; @ March 12th, 2009 10:50

可以通过设定Tree的样式来更改Tree的icon. 如下

		_treeLAAndSub = new Tree();
		_treeLAAndSub.iconField = "hahah@#$@#$";
		_treeLAAndSub.setStyle("folderClosedIcon", ImagesForActions.iconImport);	//文件夹关闭时
		_treeLAAndSub.setStyle("folderOpenIcon", ImagesForActions.iconExport);	//文件夹打开

		_treeLAAndSub.setStyle("defaultLeafIcon", ImagesForActions.iconCopy);	// 叶子
		_treeLAAndSub.setStyle("disclosureOpenIcon", ImagesForActions.iconRemove);	//文件夹打开时旁边的图示
		_treeLAAndSub.setStyle("disclosureClosedIcon", ImagesForActions.iconAdd);	//文件夹关闭时旁边的图示

AIR中通过右键直接选定基于LIST容器[DataGrid, List, Tree等]的数据 – Select List item with mouse right-click

Categories: 垃圾山; Tagged with: AIR • Air右键 • DataGrid • Flex右键 • List • Tree; @ January 5th, 2009 23:18

问题: 在很多情况下, 我们在DataGrid, List, Tree等容器中使用右键, 进行如修改, 删除某行的操作. 问题是如果该容器初始状态下直接进行右键点击时, 并不能选定任何数据.

解决: 通过监听右键菜单SELECT事件, 获取到当前右键所击位置的Index, 并将之赋值给DataGrid或其他容器的SelectIndex, 完成点击操作

详细实现: 以DataGrid为例.

第一步, 首先给DataGrid添加菜单

			var dgMenu:NativeMenu = new NativeMenu();
			var del:NativeMenuItem  = new NativeMenuItem("Test");
			del.addEventListener(Event.SELECT, onRightClickDel);
			dgMenu.addItem(del);
			dgMenu.addEventListener(ContextMenuEvent.MENU_SELECT, onRightClicked);
			_dataGridStudent.contextMenu = dgMenu;

第二步, 响应函数:

	/**响应右键点击 */
	private function onRightClicked(e:ContextMenuEvent):void {
		var rightClickItemRender:IListItemRenderer;

		if(e.mouseTarget is IListItemRenderer) {
			rightClickItemRender = IListItemRenderer(e.mouseTarget);
		}else if(e.mouseTarget.parent is IListItemRenderer) {
			rightClickItemRender = IListItemRenderer(e.mouseTarget.parent);
		}

		if(rightClickItemRender != null) {
			var rightClickIndex:int = _dataGridStudent.itemRendererToIndex(rightClickItemRender);
			if(_dataGridStudent.selectedIndex != rightClickIndex) {
				_dataGridStudent.selectedIndex = rightClickIndex;
				onSlectedChange();
			}
		}
		trace("通过右键单击获得选定的行: " + _dataGridStudent.selectedIndex);
	}

Delete响应函数:

	/** 当右键菜单的Delete点击后响应*/
	private function onRightClickDel(e:Event):void {
		//在这里放逻辑....
	}

效果:

控制台Trace信息:

通过右键单击获得选定的行: 1

参考资料: Adobe CookBook Select List item with mouse right-click

Older Posts

Flex: CheckBox Tree

Flex Tree ToolTip 设定

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？

Flex Tree样式: 如何修改Tree的Icon

AIR中通过右键直接选定基于LIST容器[DataGrid, List, Tree等]的数据 – Select List item with mouse right-click

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？