我想添加一个带有“确定”和“取消”按钮的通用对话框，支持回调函数。

如何使用 Dojo AMD 实现这一目标？

例如:

  myDialog = new Dialog ({

  title: "My Dialog",
  content: "Are you sure, you want to delete the selected Record?",
  style: "width: 300px",
  onExecute:function(){ //Callback function 
      console.log("Record Deleted") 
  },
  onCancel:function(){ 
      console.log("Event Cancelled") } 
  });
  // create a button to clear the cart
   new Button({ label:"Ok"
       onClick: myDialog.onExecute()
   }

   new Button({ label:"Cancel"
        onClick: function(){ myDialog.onCancel() }
   }

最佳答案

这是我遇到同样问题时想到的解决方案。它不完全是程序化的，但使用模板可以使代码更具可读性和更改灵 active 。

看一遍胜过听一百遍，所以请在 jsFiddle 查看下面的所有代码:http://jsfiddle.net/phusick/wkydY/

我采用的主要原则是 dijit.Dialog::content 不仅可以是字符串，还可以是小部件实例。所以我继承 dijit.Dialog 来声明 ConfirmDialog 类。在 ConfirmDialog::constuctor() 中，我从模板中声明并实例化一个小部件，并将其设置为对话框的内容。然后我在 ConfirmDialog::postCreate() 方法中连接 onClick Action :

var ConfirmDialog = declare(Dialog, {

    title: "Confirm",
    message: "Are you sure?",

    constructor: function(/*Object*/ kwArgs) {
        lang.mixin(this, kwArgs);

        var message = this.message;

        var contentWidget = new (declare([_Widget, _TemplatedMixin, _WidgetsInTemplateMixin], {
            templateString: template, //get template via dojo loader or so
            message: message    
        }));
        contentWidget.startup();
        this.content = contentWidget;
    },

    postCreate: function() {
        this.inherited(arguments);
        this.connect(this.content.cancelButton, "onClick", "onCancel");
    }

})

模板标记:

<div style="width:300px;">

  <div class="dijitDialogPaneContentArea">
    <div data-dojo-attach-point="contentNode">
        ${message}              
    </div>
  </div>

  <div class="dijitDialogPaneActionBar">

    <button
      data-dojo-type="dijit.form.Button"
      data-dojo-attach-point="submitButton"
      type="submit"
    >
      OK
    </button>

    <button
      data-dojo-type="dijit.form.Button"
      data-dojo-attach-point="cancelButton"
    >
      Cancel
    </button>

  </div>

</div>

现在使用 ConfirmDialog 代替 dijit.Dialog:

var confirmDialog = new ConfirmDialog({ message: "Your message..."});
confirmDialog.show();

重要:不要忘记断开与对话框回调的任何连接并在关闭时销毁对话框。

如果您经常在代码的多个位置使用 ConfirmDialog，请考虑:

var MessageBox = {};
MessageBox.confirm = function(kwArgs) {
    var confirmDialog = new ConfirmDialog(kwArgs);
    confirmDialog.startup();

    var deferred = new Deferred();
    var signal, signals = [];

    var destroyDialog = function() {
        array.forEach(signals, function(signal) {
            signal.remove();
        });
        delete signals;
        confirmDialog.destroyRecursive();
    }

    signal = aspect.after(confirmDialog, "onExecute", function() {
        destroyDialog();
        deferred.resolve('MessageBox.OK');
    });
    signals.push(signal);

    signal = aspect.after(confirmDialog, "onCancel", function() {
        destroyDialog();   
        deferred.reject('MessageBox.Cancel');            
    });
    signals.push(signal);

    confirmDialog.show();
    return deferred;
}

您的代码将更具可读性，您将不必处理清理工作:

MessageBox.confirm().then(function() {
    console.log("MessageBox.OK")
});

关于javascript - 带确认按钮的 Dojo 对话框，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/10401512/