如何使聚合物元件可拖动 [英] How to make a polymer element draggable
问题描述
我尝试在自定义聚合物元素上启用 HTML5拖放功能，但它无法正常工作。没有聚合物可以只添加 draggable 属性。
这是我的代码在Dart：
my_component.html
< polymer-element name =my-component>
< template>
< style>
@host {
：scope {
display：block;
}
}
div {
background-color：red;
width：200px
height：200px;
}
< / style>
< div>
拖动我
< / div>
< / template>
< script type =application / dartsrc =my_component.dart>< / script>
< / polymer-element>
my_component.dart
import'package：polymer / polymer.dart';
@CustomTag（'my-component'）
class MyComponent extends PolymerElement {
MyComponent.created（）：super.created（）;
}
test.html
< pre class =lang-html prettyprint-override>
<！DOCTYPE html>
< html>
< head>
< link rel =importhref =my_component.html>
< script type =application / dart> import'package：polymer / init.dart';< / script&
< script src =packages / browser / dart.js>< / script>
< / head>
< body>
< my-component draggable =true>< / my-component>
< / body>
< / html>
我也尝试直接从HTML元素扩展。
$ b。
任何想法如何使聚合物元素可拖曳？ $ b
编辑：此操作有错误报告。
我知道这是相当过时的，但我离开这里为其他人可能正在寻找。 Polymer现在有一个核心元素用于拖动支持： https://github.com/Polymer/core -drag-drop 。有一个demo.html文件，向您展示如何使用它。
I'm trying to enable HTML5 drag and drop on a custom polymer element but it doesn't work. Without polymer it's possible to just add the draggable attribute.
Here is my code in Dart:
my_component.html
<polymer-element name="my-component">
<template>
<style>
@host {
:scope {
display: block;
}
}
div {
background-color: red;
width: 200px;
height: 200px;
}
</style>
<div>
Drag me
</div>
</template>
<script type="application/dart" src="my_component.dart"></script>
</polymer-element>
my_component.dart
import 'package:polymer/polymer.dart';
@CustomTag('my-component')
class MyComponent extends PolymerElement {
MyComponent.created() : super.created();
}
test.html
<!DOCTYPE html>
<html>
<head>
<link rel="import" href="my_component.html">
<script type="application/dart">import 'package:polymer/init.dart';</script>
<script src="packages/browser/dart.js"></script>
</head>
<body>
<my-component draggable="true"></my-component>
</body>
</html>
I also tried extending directly from an HTML Element. This didn't work either.
Any ideas how a polymer element can be made draggable?
Edit: There is a Bug Report for this.
I know this is fairly dated, but I'm leaving this here for others who might be looking. There is a core element in Polymer now for dragging support: https://github.com/Polymer/core-drag-drop. There is a demo.html file to show you how to use it.
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