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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">
<title>Dynatree - Local Server</title>
<script src="../jquery/jquery.js" type="text/javascript"></script>
<script src="../jquery/jquery-ui.custom.js" type="text/javascript"></script>
<script src="../jquery/jquery.cookie.js" type="text/javascript"></script>
<link href="../src/skin/ui.dynatree.css" rel="stylesheet" type="text/css">
<script src="../src/jquery.dynatree.js" type="text/javascript"></script>
<!-- Start_Exclude: This block is not part of the sample code -->
<link href="prettify.css" rel="stylesheet">
<script src="prettify.js" type="text/javascript"></script>
<link href="sample.css" rel="stylesheet" type="text/css">
<script src="sample.js" type="text/javascript"></script>
<!-- End_Exclude -->
<script type="text/javascript">
var _activeKey = null,
debugDelay = 5; // seconds
$(function(){
$("#tree").ajaxComplete(function(event, XMLHttpRequest, ajaxOptions) {
_log("debug", "ajaxComplete: %o", this); // dom element listening
});
// --- Initialize sample trees
$("#tree").dynatree({
persist: true,
checkbox: true,
selectMode: 3,
onPostInit: function(isReloading, isError) {
// alert("reloading: "+isReloading+", error:"+isError);
logMsg("onPostInit(%o, %o) - %o", isReloading, isError, this);
// Re-fire onActivate, so the text is updated
this.reactivate();
},
fx: { height: "toggle", duration: 200 },
// initAjax is hard to fake, so we pass the children as object array:
initAjax: {url: "http://127.0.0.1:8001",
dataType: "jsonp", // Enable JSONP, so this sample can be run from the local file system against a localhost server
timeout: 10000, // timeout, otherwise 'connection refused' is not recognized if server is not running
data: {key: "",
sleep: debugDelay,
// returnEmpty: true,
// depth: 3,
mode: "baseFolders"
},
addExpandedKeyList: true // Send list of expanded keys, so the webservice can deliver these children also
},
onLazyRead: function(node){
node.appendAjax(
{url: "http://127.0.0.1:8001",
dataType: "jsonp", // Enable JSONP, so this sample can be run from the local file system against a localhost server
data: {key: node.data.key,
sleep: debugDelay,
// returnEmpty: true,
mode: "branch"
}
});
},
onActivate: function(node) {
$("#echoActive").text(node.data.tooltip + ", key=" + node.data.key);
_activeKey = node.data.key;
},
dnd: {
onDragStart: function(node) {
/** This function MUST be defined to enable dragging for the tree.
* Return false to cancel dragging of node.
*/
logMsg("tree.onDragStart(%o)", node);
return true;
},
onDragStop: function(node) {
// This function is optional.
logMsg("tree.onDragStop(%o)", node);
},
autoExpandMS: 1000,
preventVoidMoves: true, // Prevent dropping nodes 'before self', etc.
onDragEnter: function(node, sourceNode) {
/** sourceNode may be null for non-dynatree droppables.
* Return false to disallow dropping on node. In this case
* onDragOver and onDragLeave are not called.
* Return 'over', 'before, or 'after' to force a hitMode.
* Return ['before', 'after'] to restrict available hitModes.
* Any other return value will calc the hitMode from the cursor position.
*/
logMsg("tree.onDragEnter(%o, %o)", node, sourceNode);
return true;
},
onDragOver: function(node, sourceNode, hitMode) {
/** Return false to disallow dropping this node.
*
*/
logMsg("tree.onDragOver(%o, %o, %o)", node, sourceNode, hitMode);
// Prevent dropping a parent below it's own child
if(node.isDescendantOf(sourceNode)){
return false;
}
// Prohibit creating childs in non-folders (only sorting allowed)
// if( !node.isFolder && hitMode == "over" )
// return "after";
},
onDrop: function(node, sourceNode, hitMode, ui, draggable) {
/** This function MUST be defined to enable dropping of items on
* the tree.
*/
logMsg("tree.onDrop(%o, %o, %s)", node, sourceNode, hitMode);
sourceNode.move(node, hitMode);
// expand the drop target
// sourceNode.expand(true);
},
onDragLeave: function(node, sourceNode) {
/** Always called if onDragEnter was called.
*/
logMsg("tree.onDragLeave(%o, %o)", node, sourceNode);
}
}
});
$("#btnReload").click(function(){
$("#tree").dynatree("getTree").reload();
return false;
});
$("#btnReloadNode").click(function(){
$("#tree").dynatree("getTree").getNodeByKey(_activeKey).reloadChildren();
return false;
});
});
</script>
</head>
<body class="example">
<h1>Example: Lazy loading with a (local) HTTP test server</h1>
<p class="description">
Using <code>initAjax</code> option to initialize the tree using Ajax.<br>
The folders have the <code>isLazy</code> option set, so that they are also
loaded 'on demand', when expanded.<br>
<br>
Using <code>persist: true</code> and <code>initAjax: { addExpandedKeyList: true }</code>
we also support 'lazy persistence' (which has to be supported by the
web service, of course).<br>
<br>
Note:<br>
This sample assumes that a Dynatree Web Service is running at http://127.0.0.1:8001.<br>
See <a href="dynatree_server.py">dynatree_server.py</a> for a sample
server implementation.<br>
<br>
Note also:<br>
We have to enable JSONP using the option <code>initAjax: { dataType: 'jsonp' }</code>,
because Ajax calls will fail, if the originating HTML page and the web
service do not reside on the same host.<br>
In our case may have this sample page on the local file system and the
web service runs on 127.0.0.1.
</p>
<div id="tree">
<!-- When using initAjax, it may be nice to put a throbber here, that spins until the initial content is loaded: -->
Loading...
</div>
<div>Active node: <span id="echoActive">-</span></div>
<p>
<button id="btnReload">Reload tree</button>
<button id="btnReloadNode">Reload active node</button>
</p>
<!-- Start_Exclude: This block is not part of the sample code -->
<hr>
<p class="sample-links no_code">
<a class="hideInsideFS" href="http://dynatree.googlecode.com">jquery.dynatree.js project home</a>
<a class="hideOutsideFS" href="#">Link to this page</a>
<a class="hideInsideFS" href="samples.html">Example Browser</a>
<a href="#" id="codeExample">View source code</a>
</p>
<pre id="sourceCode" class="prettyprint" style="display:none"></pre>
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</body>
</html>