Question

我正在尝试实施一个纸质对话框，当下图中的纸制品被点击时，该对话框将显示出来： my app's main screen

但我无法打开纸质对话框。

我已将纸质对话框实施到我的应用中，如下所示：

<link rel="import" href="../bower_components/polymer/polymer.html">
<link rel="import" href="../bower_components/polymerfire/firebase-query.html">
<link rel="import" href="../bower_components/paper-fab/paper-fab.html">
<link rel="import" href="../bower_components/paper-dialog/paper-dialog.html">
<link rel="import" href="../bower_components/polymerfire/firebase-auth.html">
<link rel="import" href="shared-styles.html">

<dom-module id="my-view1">
  <template>
    <style include="shared-styles">
      :host {
        display: block;

        padding: 10px;
      }

      paper-fab{
        position:fixed;
        right:20px;
        bottom:68px;
        --paper-fab-keyboard-focus-background:--accent-color;
      }
    </style>
    <firebase-auth 
      id="auth" 
      user="{{user}}" 
      provider="" 
      status-known="{{statusKnown}}"
      on-error="handleError">
    </firebase-auth>
     <firebase-query
        id="query"
        path="/posts"
        data="{{posts}}">
    </firebase-query>
    <div class="card">
      <h1>Post</h1>

      <ul id="post-list">
        <template is="dom-repeat" items="[[posts]]" as="post">
          <li>
            <p class="content">[[post.body]]</p>
          </li>
        </template>
      </ul>

    </div>
    <paper-fab icon="add" onclick="dialog.open()"></paper-fab>

    <paper-dialog id="dialog">
      <paper-textarea id="post" label="Write your post here..."></paper-textarea>
      <paper-button dialog-dismiss>Cancel</paper-button>
      <paper-button on-tap="post" id="btnPost" raised class="indigo" hidden$="[[!user]]">Post</paper-button>
    </paper-dialog>
  </template>

  <script>
    Polymer({
      is: 'my-view1',
      properties:{
        user:{
          type: Object
        },
        statusKnown:{
           type: Object
        },
        posts: {
          type: Object
        }
      },
      post: function() {
        this.$.query.ref.push({
          "Uid": this.user.uid,
          "body": this.$.post.value
        });
        this.$.post.value = null;
      }
    });
  </script>
</dom-module>

    <paper-fab icon="add" onclick="dialog.open()"></paper-fab>

    <paper-dialog id="dialog">
      <paper-textarea id="post" label="Write your post here..."></paper-textarea>
      <paper-button dialog-dismiss>Cancel</paper-button>
      <paper-button on-tap="post" id="btnPost" raised class="indigo" hidden$="[[!user]]">Post</paper-button>
    </paper-dialog>

此片段摘自此页面上的演示：

https://www.webcomponents.org/element/PolymerElements/paper-dialog/v1.1.0/demo/demo/index.html

但是当我真正点击纸张工厂时，我收到以下错误：

未捕获的ReferenceError：未定义对话框在HTMLElement.onclick（查看3：1） onclick @ view3：1

有人知道如何在纸张工厂被点击时打开纸张对话框吗？我想我错过了一些包含，但我无法弄清楚哪一个。

Answer 1

首先，不要使用onclick。有点击或点击等聚合物事件属性。其次，你应该调用将打开所选对话框的函数

示例：

<paper-fab icon="add" on-tap="_openDialog"></paper-fab>

和内部脚本

_openDialog: function() {
  this.$.dialog.open();
}

this.$.dialog找到带有id对话框的元素并调用函数open

无法打开Polymer的纸张对话框无效

1 个答案: