jQuery UI - overflow-y中的可拖动项:滚动容器

Question

我有一个网页,我在右边的项目可以拖动到左边的列.效果很好,除了我想在右侧的项容器上设置固定高度或最大高度,并应用overflow-y:scroll.当我尝试这样做时,项目会拖动到目标列下而不是顶部.如果我从项容器div中取出溢出属性,它可以正常工作.

谁能指出我哪里出错了？如何获得可滚动的可拖动列表？

JS Fiddle HERE显示我的意思... https://jsfiddle.net/bvxxetot/

这是我用来初始化draggable/droppable区域的javascript代码

HTML

<div id="tmpl-view-builder-container">

  <div id="tmpl-view-preview-container">
    <div class="droppable">


    </div>

  </div>

  <div id="tmpl-view-legend-container">
    <h3>Available Fields</h3>
    <div id="tmpl-view-legend-item-container">    
        <ul>
          <li>Field 1</li>
          <li>Field 2</li>
          <li>Field 3</li>
          <li>Field 4</li>
          <li>Field 5</li>
          <li>Field 6</li>
          <li>Field 7</li>
          <li>Field 8</li>
          <li>Field 9</li>
          <li>Field 10</li>
      </ul>
    </div>      
  </div>

</div>

CSS

.droppable { border:1px dashed #000000; width:75%; float:left; height:400px;}

#tmpl-view-legend-container {
  position:absolute;
  right:20px;
  top:0px;
  height:400px;
  overflow-y:scroll;
}

#tmpl-view-legend-container ul { list-style-type:none; padding:0; }
#tmpl-view-legend-container ul li { background:#CCCCCC; margin-bottom:10px; padding:7px 10px; cursor:pointer; }

JS

$(function() {
    $('.droppable').droppable({
            accept:'#tmpl-view-legend-item-container li',
        hoverClass: 'hovered',
        drop: testDropFunction
    });

    $('#tmpl-view-legend-item-container li').draggable({
            stack: '#tmpl-view-legend-items li',
        cursor: 'move',
        revert: true,
        appendTo: 'body'
    });
});


function testDropFunction(event, ui) {
    alert('Testing!');
}

谢谢!

Answer 1

你可以使用它来获得这个功能helper: 'clone',但是你需要添加一些代码来修复一些事情.

在draggable构造函数中:

    helper: 'clone',
    start: function(e, ui) {
        ui.helper.width($(this).width());
        $(this).css('visibility', 'hidden');
    },
    stop: function(e, ui) {
        $(this).css('visibility', '');
    }

在CSS中:

li.ui-draggable.ui-draggable-handle.ui-draggable-dragging { list-style-type:none; background:#CCCCCC; margin-bottom:10px; padding:7px 10px; cursor:pointer; }

这是一个有效的jsfiddle,基于您的代码:https://jsfiddle.net/ahx7urbk/