<paper-dialog> 在对话框中选择时调整大小<paper-tab>

Question

resizable_dialog.html

<link rel="import" href="../../packages/polymer/polymer.html">
<link rel="import" href="../../packages/paper_elements/paper_dialog.html">
<link rel="import" href="../../packages/paper_elements/paper_button.html">
<link rel="import" href="../../packages/paper_elements/paper_tabs.html">
<link rel="import" href="../../packages/paper_elements/paper_tab.html">
<link rel="import" href="../../packages/paper_elements/paper_icon_button.html">
<link rel="import" href="../../packages/core_elements/core_toolbar.html">
<link rel="import" href="../../packages/core_elements/core_pages.html">
<polymer-element name="resizeable-dialog">
  <template>
    <style>
      :host {
        display: block;
      }
    </style>
    <paper-button on-click="{{open}}">Open Dialog</paper-button>    
    <paper-dialog id="dialog" transition="core-transition-bottom" backdrop>
      <paper-tabs selected="{{selected}}">
        <paper-tab>Page 1</paper-tab>
        <paper-tab>Page 2</paper-tab>
      </paper-tabs>
      <section>
        <core-pages selected="{{selected}}">
          <div style="width: 100px; height: 100px;">
            <div>Page 1: 100x100</div>
            <paper-button on-click="{{notifyResize}}">Call 'notifyResize'</paper-button>          
          </div>
          <div style="width: 400px; height: 400px;">
            <div>Page 2: 400x400</div>
            <paper-button on-click="{{notifyResize}}">Call 'notifyResize'</paper-button>          
          </div>
        </core-pages>
      </section>
    </paper-dialog>
  </template>
  <script type="application/dart" src="resizeable_dialog.dart"></script>
</polymer-element>

resizable_dialog.dart

library resizable_dialog;
import 'package:polymer/polymer.dart';
import 'package:paper_elements/paper_dialog.dart';
@CustomTag('resizeable-dialog')
class ResizeableDialog extends PolymerElement {
  ResizeableDialog.created() : super.created();
  @observable int selected = 0;
  notifyResize() {
    $['dialog'] as PaperDialog..notifyResize();
    print('"notifyResize" called.');
  }
  open() {
    $['dialog'] as PaperDialog..open();
  }
}

这是我的对话，我认为您可以通过塔巴尔（Tabbar）明白。我的问题是<paper-dialog>在显示之前在某个时候计算其尺寸。但是，由于我的<core-pages>可以具有不同的宽度＆amp;高度，我必须在用户选择选项卡以确保当前选定页面的整个内容时，我必须调整对话框的大小。

由于某些原因，DART中不存在该方法<paper-dialog>.notifyResize()。它是在paper-elements文档中指定的，但我无法调用它，因为它不存在于Dart中。

我该怎么做？如何要求对话框重新测量其尺寸？

Answer 1

您应该能够像

一样工作

import 'dart:js' as js;
...
new js.JsObject.fromBrowserObject($['dialog'])
   .callMethod('notifyResize', []);

或

import 'package:paper_elements/paper_dialog.dart';
...
($['dialog'] as PaperDialog).jsElement
    .callMethod('notifyResize', []);

请在github.com/dart-lang/paper-elements repo（或core-elements）中创建一个错误报告，因为我认为此函数应从核心范围内继承）