好的,所以当点击dijit.layout.ContentPane (tab)上的 [X] 按钮时,会生成onClose事件, dijit.layout.TabContainer正在监听这个事件,所以当这种情况发生时,它会执行回调closeChild()然后函数removeChild()被执行,最后一个是你应该覆盖的。
tabContainer 从dijit.layout.StackContainer继承了这两个函数,您应该查看 API 文档。
因此,为了能够修改关闭选项卡的默认行为,您应该覆盖默认功能,在下面的示例中我这样做。阅读评论以获取有关在何处添加逻辑的信息。
例如
<script>
require([
"dojo/parser",
"dojo/_base/lang", //this is the one that has the extend function
"dojo/topic", //this is needed inside the overrided function
"dijit/layout/TabContainer",
"dijit/layout/ContentPane",
"dojo/domReady!"
], function(Parser, lang, topic, tabContainer, contentPane){
Parser.parse();
// this will extend the tabContainer class and we will override the method in question
lang.extend(tabContainer, {
// this function, i copied it from the dijit.layout.StackContainer class
removeChild: function(/*dijit._Widget*/ page){
// for this to work i had to add as first argument the string "startup"
this.inherited("startup", arguments);
if(this._started){
// also had to call the dojo.topic class in the require statement
topic.publish(this.id + "-removeChild", page);
}
if(this._descendantsBeingDestroyed){ return; }
if(this.selectedChildWidget === page){
this.selectedChildWidget = undefined;
if(this._started){
var children = this.getChildren();
if(children.length){
// this is what you want to add your logic
// the var children (array) contains a list of all the tabs
// the index selects the tab starting from left to right
// left most being the 0 index
this.selectChild(children[0]);
}
}
}
if(this._started){
this.layout();
}
}
});
// now you can use your modified tabContainer WALAAAAAAA!
// from here on, normal programmatic tab creation
var tc = new tabContainer({
style: "height: 100%; width: 100%;",
}, "tab-container-div-id");
var cp1 = new contentPane({
title: "First Tab",
closable: true
});
tc.addChild(cp1);
var cp2 = new contentPane({
title: "Second Tab",
closable: true
});
tc.addChild(cp2);
var cp3 = new contentPane({
title: "Third Tab",
selected: true,
closable: true
});
tc.addChild(cp3);
tc.startup();
});
</script>