On the front end, I aim to enable users to influence the outcome of a Decision Tree based on their selections.
For my Django-React App, I have adopted the style and tree example from the codeplayer. You can find it here:
I am tasked with creating an unordered list that will serve as a visual representation of a decision tree.
The user will have 4 options to choose from - labeled Option 1, 2, 3, and 4. These choices should trigger stylistic changes in the decision tree elements to aid the user's understanding. For instance, selecting Option 1 from a dropdown menu should display the corresponding box in a different color. Additionally, it would be beneficial to highlight all the nodes along the path from the parent node to the selected leaf node.
* {
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 {
/* white-space: nowrap; */
float: left;
text-align: center;
list-style-type: none;
position: relative;
padding: 20px 1px 0 1px;
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 3px;
text-decoration: none;
color: #666;
/* font-family: arial, verdana, tahoma; */
display: inline-block;
/* word-wrap: break-word; */
word-break: break-all;
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;
}<div class="tree">
<ul>
<li>
<a href="#">Parent</a>
<ul>
<li>
<a href="#">Child</a>
<ul>
<li>
<a href="#">Option 1</a>
</li>
<li>
<a href="#">Option 2</a>
</li>
</ul>
</li>
<li>
<a href="#">Child</a>
<ul>
<li>
<a href="#">Option 3</a>
</li>
<li>
<a href="#">Option 4</a>
</li>
</ul>
</li>
</ul>
</li>
</ul>
</div>