Question

我正在通过一个datadic.xml文件来填充actionscript 3.0中的组合框，但我想在前11个属性的每个部分之间添加一个中断或标题然后中断，然后是最后26个属性。这是我的xml文件的一部分：

<codeSet> 
<title>Census: population estimates for Northern Ireland </title>
<subtitle>By country, region and local authority</subtitle>
<txtSource>2011 Census</txtSource>
<txtSource2>2001Census</txtSource2>
<dateStart>2001</dateStart>
<dateEnd>2011</dateEnd>
<code id='94NI'>NORTHERN IRELAND</code>
<code id='N09000001'>Antrim and Newtownabbey</code>

然后actionscript加载xml并创建一个名为setLists的函数，这是一个填充组合框的简单循环，但现在我想要休息，所以应该是北爱尔兰（休息）Antrim和Newtownabbey接着是10然后（休息）等等。 ActionScript代码：

function setLists():void
{
    var menuLength:int = xmlCodes.code.length();
    for (var i:int=0; i<menuLength; i++)
        {
            myVarList1.addItem({label:xmlCodes.code[i].text(), data:xmlCodes.code[i].@id});
            myVarList2.addItem({label:xmlCodes.code[i].text(), data:xmlCodes.code[i].@id});

            if (

        }

Answer 1

如果标题下方的元素总数相同，请尝试以下方法：

function setLists():void
{
    var menuLength:int = xmlCodes.code.length();

    // I'm basing the "breaks" variable on this flow: title, break, 11 items, break, title, break, 26 items
    // 
    var breaks:int = 3;
    var breakCount:int = 0;
    // Note we've added "breaks" to our menuLength
    //
    for (var i:int=0; i<menuLength + breaks; i++)
        {
            // 1, 12, and 14 are where we add breaks based on the flow mentioned above
            //
            if (i == 1 || i == 12 || i == 14) {
                myVarList1.addItem({label:' ', data:null);
                myVarList2.addItem({label:' ', data:null);
                breakCount++;
            } else {
                myVarList1.addItem({label:xmlCodes.code[i-breakCount].text(), data:xmlCodes.code[i].@id});
                myVarList2.addItem({label:xmlCodes.code[i-breakCount].text(), data:xmlCodes.code[i].@id});
            }
        }

Answer 2

我认为“类别”和“孩子”之间的id格式存在差异？此外，XML提供了具有以下模式的排序列表？

CATEGORY1

child1

的child2

[...]

child3

CATEGORY2

child1

的child2

[...]

child3

如果是这样，您可以尝试找出“类别”与其“孩子”之间ID的区别。一种方法是创建regular expression，只匹配属于类别的ID，并在获得匹配时采取不同的行动。

示例：

var categoryIdPattern:RegExp = /^\d{2,3}\w{2,3}$/; // Matches only strings consisting of 2-3 numbers followed by 2-3 word characters

var menuLength:int = xmlCodes.code.length();
for (var i:int = 0; i < menuLength; i++) {
    myVarList1.addItem({label:xmlCodes.code[i].text(), data:xmlCodes.code[i].@id});
    if (categoryIdPattern.exec(xmlCodes.code[i].@id as String) != null) {
        //This is a category, add an empty row beneath the newly added value in the combobox
        myVarList1.addItem({label:"", data:null});
    }
}

编辑：我应该补充一点，上面的代码是未经测试的，只是说明了这个概念。

Answer 3

我最后创建了一个新类来覆盖数据设置器，因此我可以在组合框中将值设置为'disabled：true'

var myVarList1:ComboBox = new ComboBox();
var myVarList2:ComboBox = new ComboBox();
myVarList1.dropdown.setStyle("cellRenderer", MyCustomCellRenderer); 
myVarList2.dropdown.setStyle("cellRenderer", MyCustomCellRenderer);

然后调用我的setlists函数

function setLists():void
    {
        var menuLength:int = xmlCodes.code.length();
        var breaks:int = 3;
        var breaksCount:int = 0;

    for (var i:int=0; i<menuLength; i++)
        {

            if(i == 1){

                myVarList1.addItem({label: " ", disabled:true});
                myVarList2.addItem({label: " ", disabled:true});                
                breaksCount++;
            }
                else if (i == 11){
                myVarList1.addItem({label: " ", disabled:true});
                myVarList2.addItem({label: " ", disabled:true});                    
                breaksCount++;
                }

            else {

            myVarList1.addItem({label:xmlCodes.code[i].text(), data:xmlCodes.code[i].@id});
            myVarList2.addItem({label:xmlCodes.code[i].text(), data:xmlCodes.code[i].@id});
            }
        }

这是自定义功能，允许您将值设置为禁用。

package { 
    import fl.controls.listClasses.CellRenderer; 
    public class MyCustomCellRenderer extends CellRenderer
    {
        // override the data setter to set the enabled flag
        override public function set data(value:Object):void
        {
            super.data = value;    
            this.enabled = !(value['disabled']);
        }
    } 
}

如何在外部XML文件中添加组合框列表中的中断？

3 个答案: