egroupware_official/phpgwapi/js/dhtmlxGantt/samples/08_api/02_constraints.html

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HTML
Executable File

<!DOCTYPE html>
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<title>Constraints</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.templates.task_class = function(st,end,item){
return gantt.getChildren(item.id).length ? "gantt_project" : "";
};
gantt.init("gantt_here");
function limitMoveLeft(task, limit){
var dur = task.end_date - task.start_date;
task.end_date = new Date(limit.end_date);
task.start_date = new Date(+task.end_date - dur);
}
function limitMoveRight(task, limit){
var dur = task.end_date - task.start_date;
task.start_date = new Date(limit.start_date);
task.end_date = new Date(+task.start_date + dur);
}
function limitResizeLeft(task, limit){
task.end_date = new Date(limit.end_date);
}
function limitResizeRight(task, limit){
task.start_date = new Date(limit.start_date)
}
gantt.attachEvent("onTaskDrag", function(id, mode, task, original, e){
var parent = task.parent ? gantt.getTask(task.parent) : null,
children = gantt.getChildren(id),
modes = gantt.config.drag_mode;
var limitLeft = null,
limitRight = null;
if(!(mode == modes.move || mode == modes.resize)) return;
if(mode == modes.move){
limitLeft = limitMoveLeft;
limitRight = limitMoveRight;
}else if(mode == modes.resize){
limitLeft = limitResizeLeft;
limitRight = limitResizeRight;
}
//check parents constraints
if(parent && +parent.end_date < +task.end_date){
limitLeft(task, parent);
}
if(parent && +parent.start_date > +task.start_date){
limitRight(task, parent);
}
//check children constraints
for(var i=0; i < children.length; i++){
var child = gantt.getTask(children[i]);
if(+task.end_date < +child.end_date){
limitLeft(task, child);
}else if(+task.start_date > +child.start_date){
limitRight(task, child)
}
}
});
gantt.parse({
"data":[
{"id":11, "text":"Project #1", "start_date":"01-04-2013", "duration":"11", "progress": 0.6, "open": true},
{"id":12, "text":"Task #1", "start_date":"03-04-2013", "duration":"5", "parent":"11", "progress": 1, "open": true},
{"id":13, "text":"Task #2", "start_date":"02-04-2013", "duration":"7", "parent":"11", "progress": 0.5, "open": true},
{"id":14, "text":"Task #3", "start_date":"02-04-2013", "duration":"6", "parent":"11", "progress": 0.8, "open": true},
{"id":15, "text":"Task #4", "start_date":"02-04-2013", "duration":"6", "parent":"11", "progress": 0.2, "open": true},
{"id":16, "text":"Task #5", "start_date":"02-04-2013", "duration":"7", "parent":"11", "progress": 0, "open": true},
{"id":17, "text":"Task #2.1", "start_date":"03-04-2013", "duration":"2", "parent":"13", "progress": 1, "open": true},
{"id":18, "text":"Task #2.2", "start_date":"06-04-2013", "duration":"3", "parent":"13", "progress": 0.8, "open": true},
{"id":21, "text":"Task #4.1", "start_date":"03-04-2013", "duration":"4", "parent":"15", "progress": 0.5, "open": true},
{"id":22, "text":"Task #4.2", "start_date":"03-04-2013", "duration":"4", "parent":"15", "progress": 0.1, "open": true},
{"id":23, "text":"Task #4.3", "start_date":"03-04-2013", "duration":"5", "parent":"15", "progress": 0, "open": true}
]
});
</script>
</body>