Templates Dojo小部件模板

关于/-有一点我不明白。关于phusick的示例，login dialog类调用dom.byId（“dialog template”）-“dialog template”是脚本中的id，脚本是对话框的模板，应该出现在html模板中，而不是主html中。因此，如果我删除它，对dom.byId的调用将失败

所以我的代码结构如下

<script type="text/template" id="dialog-template">
<div style="width:300px;">
  
    <div class="dijitDialogPaneContentArea">
        <div data-dojo-attach-point="contentNode">
            {form}              
        </div>
    </div>

    <div class="dijitDialogPaneActionBar">
        <div
            class="message"
            data-dojo-attach-point="messageNode"                
        ></div>      
        <button
            data-dojo-type="dijit.form.Button"
            data-dojo-props=""                
            data-dojo-attach-point="submitButton"
        >
            OK
        </button>
        
        <button
            data-dojo-type="dijit.form.Button"
            data-dojo-attach-point="cancelButton"
        >
            Cancel
        </button>
    </div>      
</div>
</script>

main.html（仅调用main.js-仅此而已） main.js（包含以下内容）

现在LoginDialog.js和LoginDialogTemplate.html是对话框的模板化小部件 LoginController.js是控制器

我的LoginDialog.js是

define([
"dojo/_base/declare","dojo/_base/lang","dojo/on","dojo/dom","dojo/Evented","dojo/_base/Deferred","dojo/json",

"dijit/_Widget","dijit/_TemplatedMixin","dijit/_WidgetsInTemplateMixin",
"dijit/Dialog","dijit/form/Form","dijit/form/ValidationTextBox","dijit/form/Button",
"dojo/text!templates/loginDialogTemplate.html",
"dojo/text!templates/loginFormTemplate.html",

"dojo/domReady!"
], function(
declare,lang,on,dom,Evented,Deferred,JSON,
_Widget,
_TemplatedMixin,
_WidgetsInTemplateMixin,
Dialog,
Form,
Button,
template

) {

return declare([ Dialog, Evented], {
    
    READY: 0,
    BUSY: 1,
    
    title: "Login Dialog",
    message: "",
    busyLabel: "Working...",
    
    // Binding property values to DOM nodes in templates
    // see: http://www.enterprisedojo.com/2010/10/02/lessons-in-widgetry-binding-property-values-to-dom-nodes-in-templates/
    attributeMap: lang.delegate(dijit._Widget.prototype.attributeMap, {
        message: {
            node: "messageNode",
            type: "innerHTML"               
        }            
    }),
    
    constructor: function(/*Object*/ kwArgs) {
        lang.mixin(this, kwArgs);            
        var dialogTemplate = dom.byId("dialog-template").textContent;
        var formTemplate = dom.byId("login-form-template").textContent;
        var template = lang.replace(dialogTemplate, {
            form: formTemplate                
        });

        var contentWidget = new (declare(
            [_Widget, _TemplatedMixin, _WidgetsInTemplateMixin],
            {
                templateString: template                   
            }
        ));
        contentWidget.startup();
        var content = this.content = contentWidget;
        this.form = content.form;
        // shortcuts
        this.submitButton = content.submitButton;
        this.cancelButton = content.cancelButton;
        this.messageNode = content.messageNode;
    },
    
    postCreate: function() {
        this.inherited(arguments);
        
        this.readyState= this.READY;
        this.okLabel = this.submitButton.get("label");
        
        this.connect(this.submitButton, "onClick", "onSubmit");
        this.connect(this.cancelButton, "onClick", "onCancel");
        
        this.watch("readyState", lang.hitch(this, "_onReadyStateChange"));
        
        this.form.watch("state", lang.hitch(this, "_onValidStateChange"));
        this._onValidStateChange();
    },
    
    onSubmit: function() {
        this.set("readyState", this.BUSY);
        this.set("message", "");
        var data = this.form.get("value");
        
        var auth = this.controller.login(data);
        
        Deferred.when(auth, lang.hitch(this, function(loginSuccess) {
            if (loginSuccess === true) {
                this.onLoginSuccess();
                return;                    
            }
            this.onLoginError();
        }));
    },
        
    onLoginSuccess: function() {
        this.set("readyState", this.READY);
        this.set("message", "Login sucessful.");             
        this.emit("success");
    },
    
    onLoginError: function() {
        this.set("readyState", this.READY);
        this.set("message", "Please try again.");
        this.emit("error");         
    },
    
    onCancel: function() {
       this.emit("cancel");     
    },

    _onValidStateChange: function() {
        this.submitButton.set("disabled", !!this.form.get("state").length);
    },

    _onReadyStateChange: function() {
        var isBusy = this.get("readyState") == this.BUSY;
        this.submitButton.set("label", isBusy ? this.busyLabel : this.okLabel);
        this.submitButton.set("disabled", isBusy);
    }            
});
});

我的loginDialogTemplate.html如下

<script type="text/template" id="dialog-template">
<div style="width:300px;">
  
    <div class="dijitDialogPaneContentArea">
        <div data-dojo-attach-point="contentNode">
            {form}              
        </div>
    </div>

    <div class="dijitDialogPaneActionBar">
        <div
            class="message"
            data-dojo-attach-point="messageNode"                
        ></div>      
        <button
            data-dojo-type="dijit.form.Button"
            data-dojo-props=""                
            data-dojo-attach-point="submitButton"
        >
            OK
        </button>
        
        <button
            data-dojo-type="dijit.form.Button"
            data-dojo-attach-point="cancelButton"
        >
            Cancel
        </button>
    </div>      
</div>
</script>

{form}
好啊
取消

由于模板具有id=“dialog template”，所以我猜当小部件调用dom.byId（“dialog template”）时，它会在以下行抛出一个错误：“TypeError:dom.byId（…）为null:->var dialogTemplate=dom.byId（“dialog template”）.textContent

那么我做错了什么

如果我在主html中使用所有模板脚本，它就可以正常工作。

Asif

由于您在define函数中传递模板，因此不需要dom.byId（）来获取内容。试试这个：

从HTML模板中删除元素

在LoginDialog.js中，将函数参数更改为：

...
Button,
dialogTemplate,
formTemplate

下一次更改将需要formTemplate。我使用了“dialogTemplate”而不是您的“template”，因此更明显的是它如何替换示例中的代码。接下来，将构造函数的开头更改为：

constructor: function(/*Object*/ kwArgs) {
    lang.mixin(this, kwArgs);
    //var dialogTemplate = dom.byId("dialog-template").textContent;
    //var formTemplate = dom.byId("login-form-template").textContent;
    var template = lang.replace(dialogTemplate, {
        form: formTemplate
    });

    var contentWidget = new (declare(
       ...

---

我只留下了注释代码，以便您可以看到我更改了什么。它所做的是通过用传入的formTemplate替换dialogTemplate HTML中的{form}占位符来创建一个名为“template”的新模板字符串。然后，它使用新的模板字符串来创建小部件。

谢谢，我还没有尝试过它-考虑改用GWT（给Vaadin一个驱动器），但GWT似乎适合我的开发需要。