Dojo对话框,带确认按钮

Question

我想添加一个通用对话框,其中"Ok"和"Cancel"按钮支持回调函数.

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

这是我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易读,更灵活.

最好只看一次,而不是听100次,所以看下面的所有代码住在jsFiddle: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.所以我将子类dijit.Dialog声明为ConfirmDialogclass.在ConfirmDialog::constuctor()我宣布和instantize从模板窗口小部件,并将其设置为对话框的内容.然后我onClick在ConfirmDialog::postCreate()方法中连接动作:

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而不是dijit.Dialog:

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

重要提示:关闭时不要忘记断开对话框回调和销毁对话框的任何连接.

如果您ConfirmDialog经常在代码的多个位置使用,请考虑以下事项:

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,您无需处理清理:

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

Answer 2

以下是如何使用dijit/ConfirmDialog和配置其按钮.

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包含一个带有内置OK和Cancel按钮的新dijit/ConfirmTooltipDialog.