带有确认按钮的 Dojo 对话框

Question

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() }
   }

Answer 1

Dojo 确认对话框 非常简单且有用。
http://dojotoolkit.org/reference-guide/1.10/dijit/ConfirmDialog.html

require(["dijit/ConfirmDialog", "dojo/domReady!"], function(ConfirmDialog){
    myDialog = new ConfirmDialog({
        title: "My ConfirmDialog",
        content: "Test content.",
        buttonCancel: "Label of cancel button",
        buttonOk: "Label of OK button",
        style: "width: 300px",
        onCancel: function(){
            //Called when user has pressed the Dialog's cancel button, to notify container.
        },
        onExecute: function(){
           //Called when user has pressed the dialog's OK button, to notify container.
        }
    });
});

Answer 2

以下是如何使用dijit/ConfirmDialog 并配置其按钮。

require(["dijit/ConfirmDialog"], function(ConfirmDialog){

    // create instance
    var dialog = new ConfirmDialog({
        title: "Session Expiration",
        content: "the test. Your session is about to expire. Do you want to continue?",
        style: "width: 300px"
    });

    // change button labels
    dialog.set("buttonOk","Yes");
    dialog.set("buttonCancel","No");

    // register events
    dialog.on('execute', function() { /*do something*/ });
    dialog.on('cancel', function() { /*do something*/ });

    // show
    dialog.show();
});

Answer 3

Dojo 1.10 包含一个新的dijit/ConfirmTooltipDialog，带有内置的“确定”和“取消”按钮。

Answer 4

这是我在遇到同样问题时提出的解决方案。它不是完全程序化的，但使用模板使代码更具可读性和更改灵活性。

看一次总比听 100 次好，所以请在 jsFiddle 现场查看以下所有代码：http://jsfiddle.net/phusick/wkydY/

我采用的主要原则是dijit.Dialog::content 不仅可以是一个字符串，还可以是一个小部件实例。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 动作：

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();

重要提示：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，并且您不必处理清理工作：

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