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I have a folder list type of situation where I can drag items from one folder to another using jquery draggable/droppable. Folder items are draggable and folders are droppable. These are in a div that is small enough to show a vertical scroll bar.
I have "scroll: true" set on the draggable items so that they can cause the div to scroll. When I also use 'helper: "clone"' on the draggable items, the scrolling no longer works.
What am I doing wrong?
Here's some very simplified code:
<div style="background-color: red; width: 500px; height: 100px; overflow: auto;">
<table id="nfTable" class="treeTable">
<tr><td><span class="parent initialized expanded">drop here</span></td></tr>
<tr><td><span class="draggable">drag me</span></td></tr>
<tr><td><span class="draggable">drag me</span></td></tr>
<tr><td><span class="draggable">drag me</span></td></tr>
<tr><td><span class="droppable">drop here</span></td></tr>
<tr><td><span class="droppable">drop here</span></td></tr>
<tr><td><span class="draggable">drag me</span></td></tr>
<tr><td><span class="draggable">drag me</span></td></tr>
<tr><td><span class="draggable">drag me</span></td></tr>
<tr><td><span class="draggable">drag me</span></td></tr>
<tr><td><span class="droppable">drop here</span></td></tr>
<tr><td><span class="droppable">drop here</span></td></tr>
<tr><td><span class="droppable">drop here</span></td></tr>
<tr><td><span class="droppable">drop here</span></td></tr>
</table>
</div>
<script type="text/javascript" src="/js/jquery-1.3.2.min.js"></script>
// draggable and droppable in here:
<script type="text/javascript" src="/js/jquery-ui-1.7.2.custom.min.js"></script>
<script type="text/javascript">
$(function() {
$(".draggable").draggable({
// commenting the line below will make scrolling while dragging work
helper: "clone",
scroll: true,
revert: "invalid"
});
$(".droppable").droppable({
accept: ".draggable",
drop: function(e, ui) {
// todo
}
});
});
</script>
317
You have one of these problems: Your jQuery or jQuery UI Javascript path files are wrong. Your jQuery UI does not include draggable. Your jQuery or jQuery UI Javascript files are corrupted.
Using jQuery UI, we can make the DOM(Document Object Model) elements to drag anywhere within the view port. This can be done by clicking on the draggable object by mouse and dragging it anywhere within the view port. If the value of this option is set to false, it will prevent the DOM elements to be dragged .
Limit draggable area using 'containment' option It is simple. All you have to do is, add an option called containment to the draggable() method. The containment option has a value parent.
jQueryUI provides draggable() method to make any DOM element draggable. Once the element is draggable, you can move that element by clicking on it with the mouse and dragging it anywhere within the viewport.
Try wrapping your overflow div with a div with position: relative; and adding position: relative; to your overflow div.
<div style="position: relative;">
<div style="position:relative; background-color: red; width: 500px; height: 100px; overflow: auto;">
<table id="nfTable" class="treeTable">
<tr><td><span class="parent initialized expanded">drop here</span></td></tr>
<tr><td><span class="draggable">drag me</span></td></tr>
<tr><td><span class="draggable">drag me</span></td></tr>
<tr><td><span class="draggable">drag me</span></td></tr>
<tr><td><span class="droppable">drop here</span></td></tr>
<tr><td><span class="droppable">drop here</span></td></tr>
<tr><td><span class="draggable">drag me</span></td></tr>
<tr><td><span class="draggable">drag me</span></td></tr>
<tr><td><span class="draggable">drag me</span></td></tr>
<tr><td><span class="draggable">drag me</span></td></tr>
<tr><td><span class="droppable">drop here</span></td></tr>
<tr><td><span class="droppable">drop here</span></td></tr>
<tr><td><span class="droppable">drop here</span></td></tr>
<tr><td><span class="droppable">drop here</span></td></tr>
</table>
</div>
</div>
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