Enyo自定义属性

Question

我试着在enyo创造我自己的同类

enyo.kind(
{
    name: "DeviceButton",
    kind: "Button",
    caption: "",
    published: { userAgent: "" },
    flex: 1,
    onclick: "butclick",
    butclick: function() { console.log("User agent changed to " + this.userAgent) }
})

但是当我点击的时候什么也没有显示

如果我这么做了

onclick: console.log("User agent changed to " + this.userAgent)

打印的内容是this.userAgent未定义

我做错了什么？

谢谢

Answer 1

这里的问题是，onclick属性实际上提供了事件处理程序的名称，以便Enyo在接收到单击时将事件发送到该处理程序。"butclick“事件不会被分派给DeviceButton，而是被分派给它的父对象。

如果你想完全在你的类中处理事件，那么你需要将它设置为一个“处理程序”。在Enyo 2.x中，您可以这样做：

enyo.kind(
{
    name: "DeviceButton",
    kind: "Button",
    caption: "",
    published: { userAgent: "" },
    flex: 1,
    handlers {
      onclick: "butclick"
    },
    butclick: function() { console.log("User agent changed to " + this.userAgent) }
})

在Enyo 1.x中，您只需要将处理程序函数命名为"onclickHandler“。我提到Enyo 1解决方案是因为我看到您的定义中有"flex: 1“。在Enyo 2中不支持Flexbox，我们有一个“合适的”系统。

Answer 2

我为您提供了一个小示例，说明enyo如何处理与自定义类型之间的值发送和接收。我还在代码中添加了一些简短的注释。

http://jsfiddle.net/joopmicroop/K3azX/

enyo.kind({
    name: 'App',
    kind: enyo.Control,
    components: [
        {kind:'FittableRows', components:[
            // calls the custom kind by it's default values
            {kind:'DeviceButton',name:'bttn1', classes:'joop-btn',ontap:'printToTarget'},
            // calls the custom kind and pass the variables to the DeviceButton kind
            {kind:'DeviceButton', name:'bttn2', btnstring:'Get Agent', useragent:'chrome', classes:'joop-btn', ontap:'printToTarget'},
            {tag:'div', name:'targetContainer', content:'no button clicked yet', classes:'joop-target'},
        ]},                
    ],
    printToTarget:function(inSender, inEvent){
        // inSender = the button that was pressed
        this.$.targetContainer.setContent(inSender.name+' has used the value: "'+inSender.getUseragent()+'" and sends the value of: "'+inSender.getValueToPrint()+'" back.');  
    },

});

enyo.kind({
    name:'DeviceButton',
    kind:enyo.Control,
    components:[
        {kind:'onyx.Button',name:'btn', ontap:'printUsrAgent'}
    ],
    published:{
        btnstring:'default btnstring', // value that will be received
        useragent:'default useragent',  // value that will be received
        valueToPrint:'default valueToPrint' // value that will be used 
    },
    rendered:function(){
        this.inherited(arguments);
        this.$.btn.setContent(this.btnstring);
    },
    printUsrAgent:function(inSender,inEvent){
        // set a parameter with the value that was received of if not received use the default value (normaly would do some calculations with it first)
        this.valueToPrint = this.useragent+' after changes'; 
    },
});
​