I need help in dependency task

[shubham-proprofs]

Hi ,

I need help in dependency task. I am not able to draw line to show depended task.
I need help in this line var sup = this.tasks[parseInt(supStr)-1]; how we are subtract please help me.
of this function GanttMaster.prototype.updateLinks in ganttmaster file.

GanttMaster.prototype.updateLinks = function (task) {
//console.debug("updateLinks",task);
//var prof= new Profiler("gm_updateLinks");

// defines isLoop function
function isLoop(task, target, visited) {
//var prof= new Profiler("gm_isLoop");
//console.debug("isLoop :"+task.name+" - "+target.name);
if (target == task) {
return true;
}

var sups = task.getSuperiors();

//my parent' superiors are my superiors too
var p = task.getParent();
while (p) {
  sups = sups.concat(p.getSuperiors());
  p = p.getParent();
}

//my children superiors are my superiors too
var chs = task.getChildren();
for (var i = 0; i < chs.length; i++) {
  sups = sups.concat(chs[i].getSuperiors());
}

var loop = false;
//check superiors
for (var i = 0; i < sups.length; i++) {
  var supLink = sups[i];
  if (supLink.from == target) {
    loop = true;
    break;
  } else {
    if (visited.indexOf(supLink.from.id + "x" + target.id) <= 0) {
      visited.push(supLink.from.id + "x" + target.id);
      if (isLoop(supLink.from, target, visited)) {
        loop = true;
        break;
      }
    }
  }
}

//check target parent
var tpar = target.getParent();
if (tpar) {
  if (visited.indexOf(task.id + "x" + tpar.id) <= 0) {
    visited.push(task.id + "x" + tpar.id);
    if (isLoop(task, tpar, visited)) {
      loop = true;
    }
  }
}

//prof.stop();
return loop;

}

//remove my depends
this.links = this.links.filter(function (link) {
return link.to != task;
});

var todoOk = true;
if (task.depends) {
//cannot depend from an ancestor
var parents = task.getParents();
//cannot depend from descendants
var descendants = task.getDescendant();

var deps = task.depends.split(",");
var newDepsString = "";
var visited = [];
var depsEqualCheck = [];
console.log('deps.length', deps.length); 
console.log('deps', deps); 

for (var j = 0; j < deps.length; j++) {
  var depString = deps[j]; // in the form of row(lag) e.g. 2:3,3:4,5
  var supStr =depString;
  var lag = 0;
  var pos = depString.indexOf(":");
  if (pos>0){
    supStr=depString.substr(0,pos);
    var lagStr=depString.substr(pos+1);
    lag=Math.ceil((stringToDuration(lagStr)) / Date.workingPeriodResolution) * Date.workingPeriodResolution;
  }

  var sup = this.tasks[parseInt(supStr)-1];
  console.log('this.tasks', this.tasks);
  console.log('[parseInt(supStr)-1]', [parseInt(supStr)-1]);
  if (sup) {
    if (parents && parents.indexOf(sup) >= 0) {
      this.setErrorOnTransaction("\""+task.name + "\"\n" + GanttMaster.messages.CANNOT_DEPENDS_ON_ANCESTORS + "\n\"" + sup.name+"\"");
      todoOk = false;

    } else if (descendants && descendants.indexOf(sup) >= 0) {
      this.setErrorOnTransaction("\""+task.name + "\"\n" + GanttMaster.messages.CANNOT_DEPENDS_ON_DESCENDANTS + "\n\"" + sup.name+"\"");
      todoOk = false;

    } else if (isLoop(sup, task, visited)) {
      todoOk = false;
      this.setErrorOnTransaction(GanttMaster.messages.CIRCULAR_REFERENCE + "\n\"" + task.id +" - "+ task.name + "\" -> \"" + sup.id +" - "+sup.name+"\"");

    } else if(depsEqualCheck.indexOf(sup)>=0) {
      this.setErrorOnTransaction(GanttMaster.messages.CANNOT_CREATE_SAME_LINK + "\n\"" + sup.name+"\" -> \""+task.name+"\"");
      todoOk = false;

    } else {
      this.links.push(new Link(sup, task, lag));
      newDepsString = newDepsString + (newDepsString.length > 0 ? "," : "") + supStr+(lag==0?"":":"+durationToString(lag));
    }

    if (todoOk)
      depsEqualCheck.push(sup);
  }
}
task.depends = newDepsString;

}
//prof.stop();

return todoOk;
};