Javascript X 上的 Dojo 对话框关闭事件（右上角）
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Dojo dialog close event on X (top-right)
提问by Thor A. Pedersen
Im using Dojo to create a simple dialog to create a user in a system. The problem is I get the error:
我使用 Dojo 创建一个简单的对话框来在系统中创建用户。问题是我收到错误：
Tried to register widget with `id==user_submit` but that `id` is already registered
user_submit, is a Dojo button I have to finish the form inside the dialog. When I close the dialog by clicking it and submitting the form there is no problem in opening the dialog again (in the click event on the button I have this line of code:
user_submit, 是一个 Dojo 按钮，我必须在对话框内完成表单。当我通过单击关闭对话框并提交表单时，再次打开对话框没有问题（在按钮上的单击事件中，我有以下代码行：
dijit.byId("user_submit").destroy();
but if I close the dialog through the [x]-link / button in the top-right corner I don't destroy the button and then can't open the dialog again without reloading the page.
但是如果我通过右上角的 [x]-link / 按钮关闭对话框，我不会破坏按钮，然后在不重新加载页面的情况下无法再次打开对话框。
How do I get Dojo to destroy the button or how to a overload the click-event on [X]-link / button, so I can write the destroy command for the button?
如何让 Dojo 销毁按钮或如何重载 [X] 链接/按钮上的点击事件，以便我可以为按钮编写销毁命令？
采纳答案by Thor A. Pedersen
Found a solution. by using dojo.connect().
找到了解决办法。通过使用 dojo.connect()。
myDialog.connect(myDialog, "hide", function(e){
dijit.byId("user_submit").destroy();
});
Would have postet this shortly after i posted the quistion, but I didn't have enough points, so here is the answer again, just a little late :-)
在我发布问题后不久就会发布这个，但我没有足够的积分，所以这里是答案，只是有点晚了:-)
回答by user3489215
"Developer shouldn't override or connect to this method"for "onCancel" see documentation.
A better solution is:
"Developer shouldn't override or connect to this method"对于“onCancel”，请参阅文档。更好的解决方案是：
var myDialog = new Dialog({
id: "myDialogId1",
onHide: function() {
myDialog.destroy()
}
});
回答by hugomg
IIRC, the onCloseextension event gets called when you click on the X thing, so you could try putting your cleanup code there.
IIRC，onClose当您单击 X 事物时会调用扩展事件，因此您可以尝试将清理代码放在那里。
You could also consider sidesteping the issue entirely. Perhaps you don't need to destroy the widget and could instead reuse the same one? You could also do a widget existence test before you create it again, destroying the old version if its still alive.
你也可以考虑完全回避这个问题。也许您不需要销毁小部件，而是可以重用相同的小部件？您还可以在再次创建之前进行小部件存在测试，如果旧版本仍然存在，则销毁旧版本。
回答by Neelesh
You can override onCancel()method as stated above or you can attach event to the
dijit.dialog.closeButtonNodedomElement.
dijit.dialog.closeButtonNodeis the name of data-dojo-attach-pointattribute for close button.
您可以onCancel()如上所述覆盖方法，也可以将事件附加到
dijit.dialog.closeButtonNodedomElement。
dijit.dialog.closeButtonNode是data-dojo-attach-point关闭按钮的属性名称。
Exp:
经验：
dojo.on(dijit.Dialog.closeButtonNode, "click", function(evt){
//add your logic here
});
回答by Nick Hermans
When pressing the X on the top of the dialog the "onCancel" event is triggered.
当按下对话框顶部的 X 时，将触发“onCancel”事件。
Dispose of the element there.
在那里处理元素。
