egroupware/phpgwapi/js/dhtmlxGantt/samples/08_api/01_dnd_events.html

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<!DOCTYPE html>
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<title>D'n'D Events</title>
</head>
<script src="../../codebase/dhtmlxgantt.js" type="text/javascript" charset="utf-8"></script>
<link rel="stylesheet" href="../../codebase/dhtmlxgantt.css" type="text/css" media="screen" title="no title" charset="utf-8">
<script type="text/javascript" src="../common/testdata.js"></script>
<style type="text/css">
html, body{ height:100%; padding:0px; margin:0px; overflow: hidden;}
</style>
<body>
<div id="gantt_here" style='width:100%; height:100%;'></div>
<script type="text/javascript">
gantt.init("gantt_here");
gantt.attachEvent("onAfterTaskDrag", function(id, mode){
var task = gantt.getTask(id);
if(mode == gantt.config.drag_mode.progress){
var pr = Math.floor(task.progress * 100 * 10)/10;
dhtmlx.message(task.text + " is now " + pr + "% completed!");
}else{
var convert = gantt.date.date_to_str("%H:%i, %F %j");
var s = convert(task.start_date);
var e = convert(task.end_date);
dhtmlx.message(task.text + " starts at " + s + " and ends at " + e);
}
});
gantt.attachEvent("onBeforeTaskChanged", function(id, mode, old_event){
var task = gantt.getTask(id);
if(mode == gantt.config.drag_mode.progress){
if(task.progress < old_event.progress){
dhtmlx.message(task.text + " progress can't be undone!");
return false;
}
}
return true;
});
gantt.attachEvent("onBeforeTaskDrag", function(id, mode){
var task = gantt.getTask(id);
var message = task.text + " ";
if(mode == gantt.config.drag_mode.progress){
message += "progress is being updated";
}else{
message += "is being ";
if(mode == gantt.config.drag_mode.move)
message += "moved";
else if(mode == gantt.config.drag_mode.resize)
message += "resized";
}
dhtmlx.message(message);
return true;
});
gantt.parse(demo_tasks);
</script>
</body>