【问题标题】:Scrollable div with a contained list (family tree)带有包含列表的可滚动 div(家谱)
【发布时间】:2015-01-31 21:21:59
【问题描述】:

正如您在下面的 sn-p 中看到的那样,家谱显示得并不好。那是因为容器不够宽,无法容纳它。我想通过向容器添加滚动条来解决这个问题,但不幸的是,这不起作用。我在列表中尝试了nowrap,但无济于事。有什么办法可以做到吗?

jQuery 被允许作为最后的必需品,但必须支持 IE8。树的宽度永远不会提前知道。因此,可能需要一个脚本来计算树的实际宽度。

$(window).load(function(){
// Add classes for old IE
	jQuery(".tree li a:only-child, .tree li:only-child").addClass("only-child");
	jQuery(".tree li:last-child").addClass("last-child");

});
/*Now the CSS*/
 * {
    margin: 0;
    padding: 0;
}
.tree ul {
    padding-top: 20px;
    position: relative;
    transition: all 0.5s;
    -webkit-transition: all 0.5s;
    -moz-transition: all 0.5s;
}
.tree li {
    float: left;
    text-align: center;
    list-style-type: none;
    position: relative;
    padding: 20px 5px 0 5px;
    transition: all 0.5s;
    -webkit-transition: all 0.5s;
    -moz-transition: all 0.5s;
}
/*We will use ::before and ::after to draw the connectors*/
 .tree li:before, .tree li:after {
    content:'';
    position: absolute;
    top: 0;
    right: 50%;
    border-top: 1px solid #ccc;
    width: 50%;
    height: 20px;
}
.tree li:after {
    right: auto;
    left: 50%;
    border-left: 1px solid #ccc;
}
/*We need to remove left-right connectors from elements without 
any siblings*/
 .tree li.only-child:after, .tree li.only-child:before {
    display: none;
}
/*Remove space from the top of single children*/
 .tree li.only-child {
    padding-top: 0;
}
/*Remove left connector from first child and 
right connector from last child*/
.tree li:first-child:before, .tree li.last-child:after {
    border: 0 none;
}
/*Adding back the vertical connector to the last nodes*/
 .tree li.last-child:before {
    border-right: 1px solid #ccc;
    border-radius: 0 5px 0 0;
    -webkit-border-radius: 0 5px 0 0;
    -moz-border-radius: 0 5px 0 0;
}
.tree li:first-child:after {
    border-radius: 5px 0 0 0;
    -webkit-border-radius: 5px 0 0 0;
    -moz-border-radius: 5px 0 0 0;
}
/*Time to add downward connectors from parents*/
 .tree ul ul:before {
    content:'';
    position: absolute;
    top: 0;
    left: 50%;
    border-left: 1px solid #ccc;
    width: 0;
    height: 20px;
}
.tree li a {
    border: 1px solid #ccc;
    padding: 5px 10px;
    text-decoration: none;
    color: #666;
    font-family: arial, verdana, tahoma;
    font-size: 11px;
    display: inline-block;
    border-radius: 5px;
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    transition: all 0.5s;
    -webkit-transition: all 0.5s;
    -moz-transition: all 0.5s;
}


/*Time for some hover effects*/

/*We will apply the hover effect the the lineage of the element also*/
 .tree li a:hover, .tree li a:hover+ul li a {
    background: #c8e4f8;
    color: #000;
    border: 1px solid #94a0b4;
}
/*Connector styles on hover*/
 .tree li a:hover+ul li::after, .tree li a:hover+ul li::before, .tree li a:hover+ul::before, .tree li a:hover+ul ul::before {
    border-color: #94a0b4;
}
<script type="text/javascript" src="//code.jquery.com/jquery-1.11.0.js"></script>


<!-- Borrowed from http://thecodeplayer.com/walkthrough/css3-family-tree -->
<div class="tree">
    <ul>
        <li class="only-child">	<a href="#">Parent</a>

            <ul>
                <li>	<a href="#">Child</a>

                    <ul>
                        <li class="only-child">	<a class="only-child" href="#">Grand Child</a>

                        </li>
                    </ul>
                </li>
                <li>	<a href="#">Child</a>

                    <ul>
                        <li><a class="only-child" href="#">Grand Child</a>
                        </li>
                        <li>	<a href="#">Grand Child</a>

                            <ul>
                                <li>	<a class="only-child" href="#">Great Grand Child</a>

                                </li>
                                <li>	<a class="only-child" href="#">Great Grand Child</a>

                                </li>
                                <li>	<a class="only-child" href="#">Great Grand Child</a>

                                </li>
                            </ul>
                        </li>
                        <li><a class="only-child" href="#">Grand Child</a>
                        </li>
                    </ul>
                </li>
            </ul>
        </li>
    </ul>
</div>

【问题讨论】:

    标签: jquery html css tree


    【解决方案1】:

    您可以使用表格/表格单元格显示来避免内容折叠到下一行并根据需要缩小/扩展。

    $(window).load(function(){
    // Add classes for old IE
    	jQuery(".tree li a:only-child, .tree li:only-child").addClass("only-child");
    	jQuery(".tree li:last-child").addClass("last-child");
    
    });
    /*Now the CSS*/
    * {
      margin: 0;
      padding: 0;
    }
    .tree ul {
      padding-top: 20px;
      position: relative;
      transition: all 0.5s;
      -webkit-transition: all 0.5s;
      -moz-transition: all 0.5s;
      display:table;
    }
    .tree li {
      display:table-cell;
      text-align: center;
      list-style-type: none;
      position: relative;
      padding: 20px 5px 0 5px;
      transition: all 0.5s;
      -webkit-transition: all 0.5s;
      -moz-transition: all 0.5s;
    }
    /*We will use ::before and ::after to draw the connectors*/
    .tree li:before, .tree li:after {
      content:'';
      position: absolute;
      top: 0;
      right: 50%;
      border-top: 1px solid #ccc;
      width: 50%;
      height: 20px;
    }
    .tree li:after {
      right: auto;
      left: 50%;
      border-left: 1px solid #ccc;
    }
    /*We need to remove left-right connectors from elements without 
    any siblings*/
    .tree li.only-child:after, .tree li.only-child:before {
      display: none;
    }
    /*Remove space from the top of single children*/
    .tree li.only-child {
      padding-top: 0;
    }
    /*Remove left connector from first child and 
    right connector from last child*/
    .tree li:first-child:before, .tree li.last-child:after {
      border: 0 none;
    }
    /*Adding back the vertical connector to the last nodes*/
    .tree li.last-child:before {
      border-right: 1px solid #ccc;
      border-radius: 0 5px 0 0;
      -webkit-border-radius: 0 5px 0 0;
      -moz-border-radius: 0 5px 0 0;
    }
    .tree li:first-child:after {
      border-radius: 5px 0 0 0;
      -webkit-border-radius: 5px 0 0 0;
      -moz-border-radius: 5px 0 0 0;
    }
    /*Time to add downward connectors from parents*/
    .tree ul ul:before {
      content:'';
      position: absolute;
      top: 0;
      left: 50%;
      border-left: 1px solid #ccc;
      width: 0;
      height: 20px;
    }
    .tree li a {
      border: 1px solid #ccc;
      padding: 5px 10px;
      text-decoration: none;
      color: #666;
      font-family: arial, verdana, tahoma;
      font-size: 11px;
      display: inline-block;
      border-radius: 5px;
      -webkit-border-radius: 5px;
      -moz-border-radius: 5px;
      transition: all 0.5s;
      -webkit-transition: all 0.5s;
      -moz-transition: all 0.5s;
    }
    
    
    /*Time for some hover effects*/
    
    /*We will apply the hover effect the the lineage of the element also*/
    .tree li a:hover, .tree li a:hover+ul li a {
      background: #c8e4f8;
      color: #000;
      border: 1px solid #94a0b4;
    }
    /*Connector styles on hover*/
    .tree li a:hover+ul li::after, .tree li a:hover+ul li::before, .tree li a:hover+ul::before, .tree li a:hover+ul ul::before {
      border-color: #94a0b4;
    }
    <script type="text/javascript" src="//code.jquery.com/jquery-1.11.0.js"></script>
    
    
    <!-- Borrowed from http://thecodeplayer.com/walkthrough/css3-family-tree -->
    <div class="tree">
        <ul>
            <li class="only-child">	<a href="#">Parent</a>
    
                <ul>
                    <li>	<a href="#">Child</a>
    
                        <ul>
                            <li class="only-child">	<a class="only-child" href="#">Grand Child</a>
    
                            </li>
                        </ul>
                    </li>
                    <li>	<a href="#">Child</a>
    
                        <ul>
                            <li><a class="only-child" href="#">Grand Child</a>
                            </li>
                            <li>	<a href="#">Grand Child</a>
    
                                <ul>
                                    <li>	<a class="only-child" href="#">Great Grand Child</a>
    
                                    </li>
                                    <li>	<a class="only-child" href="#">Great Grand Child</a>
    
                                    </li>
                                    <li>	<a class="only-child" href="#">Great Grand Child</a>
    
                                    </li>
                                </ul>
                            </li>
                            <li><a class="only-child" href="#">Grand Child</a>
                            </li>
                        </ul>
                    </li>
                </ul>
            </li>
        </ul>
    </div>

    【讨论】:

    • 这看起来很有希望。但是有一个问题:如您所见,中间孙子与其连接器之间有一个空白区域。这可以通过将vertical-align: top 添加到.tree li 来解决。
    • @BramVanroy 是的,当然,我只演示了这个显示器的基本行为。也可以添加“单元格”的最小宽度:)
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