function GridEditor(master) {
  this.master = master; // is the a GantEditor instance
  this.gridified = $.gridify($.JST.createFromTemplate({}, "TASKSEDITHEAD"));
  this.element = this.gridified.find(".gdfTable").eq(1);
}

//
GridEditor.prototype.fillEmptyLines = function () {
  var factory = new TaskFactory();

  //console.debug("GridEditor.fillEmptyLines");
  //至少5行空行
  var rowsToAdd = 30 - this.element.find(".taskEditRow").size();
  if(rowsToAdd<5){
	  rowsToAdd = 5;
  }
  //fill with empty lines
  for (var i = 0; i < rowsToAdd; i++) {
    var emptyRow = $.JST.createFromTemplate({}, "TASKEMPTYROW");
    //click on empty row create a task and fill above
    var master = this.master;
    emptyRow.click(function (ev) {
      var emptyRow = $(this);
      //add on the first empty row only
      if (!master.canWrite || emptyRow.prevAll(".emptyRow").size() > 0)
        return

      master.beginTransaction();
      var lastTask;
      var start = new Date().getTime();
      var level = 0;
      if (master.tasks[0]) {
        start = master.tasks[0].start;
        level = master.tasks[0].level + 1;
      }

      //fill all empty previouses
      emptyRow.prevAll(".emptyRow").andSelf().each(function () {
        var ch = factory.build("tmp_fk" + new Date().getTime(), "", "", level, start, 1);
        var task = master.addTask(ch);
        lastTask = ch;
      });
      master.endTransaction();
      lastTask.rowElement.click();
      lastTask.rowElement.find("[name=name]").focus()//focus to "name" input
        .blur(function () { //if name not inserted -> undo -> remove just added lines
          var imp = $(this);
          if (imp.val() == "") {
        	  //添加任务将任务名值为空
           // lastTask.name="Task "+(lastTask.getRow()+1);
        	lastTask.name='';
            imp.val(lastTask.name);
          }
        });
    });
    this.element.append(emptyRow);
  }
};

GridEditor.prototype.addTask = function (task, row, hideIfParentCollapsed) {
	
   //alert('GridEditor.prototype.addTask');
  //console.debug("GridEditor.addTask",task,row);
  //var prof = new Profiler("editorAddTaskHtml");
  //remove extisting row
  this.element.find("[taskId=" + task.id + "]").remove();
  var taskRow;
  if(typeof(task.id) != "number"){
      taskRow = $.JST.createFromTemplate(task, "NEWTASKROW");
  }else{
      taskRow = $.JST.createFromTemplate(task, "TASKROW");
  }
  //save row element on task

 // alert('taskRow='+taskRow);
  task.rowElement = taskRow;
  //alert('srswrew='+task.name)
  //task.level = 0;

  this.bindRowEvents(task, taskRow);

  if (typeof(row) != "number") {
    var emptyRow = this.element.find(".emptyRow:first"); //tries to fill an empty row
    if (emptyRow.size() > 0)
      emptyRow.replaceWith(taskRow);
    else
      this.element.append(taskRow);
  } else {
    var tr = this.element.find("tr.taskEditRow").eq(row);
    if (tr.size() > 0) {
      tr.before(taskRow);
    } else {
      this.element.append(taskRow);
    }

  }
  // this.element.find(".taskRowIndex").each(function (i, el) {
  //   $(el).html(i + 1);
  // });
  //prof.stop();


  //[expand]
  if(hideIfParentCollapsed)
  {
    if(task.collapsed) taskRow.find(".exp-controller").removeClass('exp');
    var collapsedDescendant = this.master.getCollapsedDescendant();
    if(collapsedDescendant.indexOf(task) >= 0) taskRow.hide();
  }


  return taskRow;
};

GridEditor.prototype.refreshExpandStatus = function(task){
  if(!task) return;
  //[expand]
  var child = task.getChildren();
  if(child.length > 0 && task.rowElement.has(".expcoll").length == 0)
  {
    task.rowElement.find(".exp-controller").addClass('expcoll exp');
  }
  else if(child.length == 0 && task.rowElement.has(".expcoll").length > 0)
  {
    task.rowElement.find(".exp-controller").removeClass('expcoll exp');
  }

  var par = task.getParent();
  if(par && par.rowElement.has(".expcoll").length == 0)
  {
    par.rowElement.find(".exp-controller").addClass('expcoll exp');
  }

}

GridEditor.prototype.refreshTaskRow = function (task) {
  //console.debug("refreshTaskRow")
  //var profiler = new Profiler("editorRefreshTaskRow");
  var row = task.rowElement;

  row.find(".taskRowIndex").html(task.getRow() + 1);
  row.find(".indentCell").css("padding-left", task.level * 10 +18 );
  row.find("[name=name]").val(task.name);
  row.find("[name=code]").val(task.code);
  row.find("[status]").attr("status", task.status);  
  row.find("[name=duration]").val(task.duration);
  row.find("[name=start]").val(new Date(task.start).format()).updateOldValue(); // called on dates only because for other field is called on focus event
  row.find("[name=end]").val(new Date(task.end).format()).updateOldValue();
  //alert(task.starttime);
  row.find("[name=starttime]").val(task.starttime).updateOldValue();
  row.find("[name=endtime]").val(task.endtime).updateOldValue();
  row.find("[name=depends]").val(task.depends);
  row.find(".taskAssigs").html(task.getAssigsString());

  //profiler.stop();
};

GridEditor.prototype.redraw = function () {
  for (var i = 0; i < this.master.tasks.length; i++) {
    this.refreshTaskRow(this.master.tasks[i]);
  }
};

GridEditor.prototype.reset = function () {
  this.element.find("[taskid]").remove();
};


GridEditor.prototype.bindRowEvents = function (task, taskRow) {
  var self = this;
  //console.debug("bindRowEvents",this,this.master,this.master.canWrite, task.canWrite);
  if (this.master.canWrite && task.canWrite ) {
    self.bindRowInputEvents(task, taskRow);

  } else { //cannot write: disable input
    //taskRow.find("input").attr("readonly", true);
    taskRow.find("input").attr("disabled", "disabled");
     
  }

  self.bindRowExpandEvents(task, taskRow);

  taskRow.find(".edit").click(function () {self.openFullEditor(task, taskRow)});
};


GridEditor.prototype.bindRowExpandEvents = function (task, taskRow) {
  var self = this;
  //expand collapse
   taskRow.find(".exp-controller").click(function(){
   //expand?
     var el=$(this);
     var taskId=el.closest("[taskid]").attr("taskid");
     var task=self.master.getTask(taskId);
     var descs=task.getDescendant();
     el.toggleClass('exp');
     task.collapsed = !el.is(".exp");
    var collapsedDescendant = self.master.getCollapsedDescendant();

     if (el.is(".exp")){
        for (var i=0;i<descs.length;i++)
        {
          var childTask = descs[i];
          if(collapsedDescendant.indexOf(childTask) >= 0) continue;
          childTask.rowElement.show();
        }

     } else {
        for (var i=0;i<descs.length;i++)
        descs[i].rowElement.hide();
     }
     self.master.gantt.refreshGantt();

   });
}

//行编辑绑定事件
GridEditor.prototype.bindRowInputEvents = function (task, taskRow) {
  var self = this;
  
  //bind dateField on dates
//  taskRow.find(".date").each(function () {
//    var el = $(this);
//
//    //start is readonly in case of deps 如果有前置任务
//    if (task.depends && el.attr("name") == "start") {
//      //el.attr("readonly", "true");
//    } else {
//      el.removeAttr("readonly");
//    }
//
//    
//    //这里调用自带的日期插件
///*    el.click(function () {
//      var inp = $(this);
//      inp.dateField({
//        inputField:el
//      });
//    });*/
//
//    el.blur(function (date) {
//      var inp = $(this);  
//      if (inp.isValueChanged()) {
//        if (!Date.isValid(inp.val())) {
//          alert(GanttMaster.messages["INVALID_DATE_FORMAT"]);
//          inp.val(inp.getOldValue());
//
//        } else {
//          var date = Date.parseString(inp.val());
//          var row = inp.closest("tr");
//          var taskId = row.attr("taskId");
//          var task = self.master.getTask(taskId);
//          var lstart = task.start;
//          var lend = task.end;
//          var lstarttime = task.starttime;
//          var lendtime = task.endtime;
//          var passnoworktime = task.passnoworktime;
//
//          if (inp.attr("name") == "start") {
//            lstart = date.getTime();
//            //开始日期大于结束日期,不要重新计算,而是提示
//            /*if (lstart >= lend) {
//              var end_as_date = new Date(lstart);
//              lend = end_as_date.add('d', task.duration).getTime();
//            }*/
//
//            //update task from editor
//            self.master.beginTransaction();
//           // self.master.moveTask(task, lstart); 这个move不符合逻辑 换成 self.master.changeTaskDates
//            self.master.changeTaskDates(task, lstart, lend,lstarttime,lendtime,passnoworktime);
//            self.master.endTransaction();
//
//          } else {
//            lend = date.getTime();
//            if (lstart >= lend) {
//              lend=lstart;
//            }
//            lend=lend+3600000*20; // this 20 hours are mandatory to reach the correct day end (snap to grid)
//
//            //update task from editor
//            self.master.beginTransaction();
//            self.master.changeTaskDates(task, lstart, lend,lstarttime,lendtime,passnoworktime);
//            self.master.endTransaction();
//          }
//
//
//          inp.updateOldValue(); //in order to avoid multiple call if nothing changed
//        }
//      }
//    });
//  });


  //bind dateField on time 时间改变
//  taskRow.find(".time").each(function () {
//    var el = $(this);
//    //start is readonly in case of deps 如果有前置任务
//    if (task.depends && el.attr("name") == "starttime") {
//      //el.attr("readonly", "true");
//    } else {
//      el.removeAttr("readonly");
//    }
//    
//    el.blur(function(date) {    	
//      var inp = $(this);
//      if (inp.isValueChanged()) {  
//          var date = inp.val();
//          var row = inp.closest("tr");
//          var taskId = row.attr("taskId");
//          var task = self.master.getTask(taskId);
//          var lstart = task.start;
//          var lend = task.end;
//          var lstarttime = task.starttime;
//          var lendtime = task.endtime;
//          var passnoworktime = task.passnoworktime;
//               if (inp.attr("name") == "starttime") {
//            	    self.master.beginTransaction();
//                    self.master.changeTaskDates(task, lstart, lend,date,lendtime,passnoworktime);
//                    self.master.endTransaction();
//               }else{  
//             	    self.master.beginTransaction();
//                    self.master.changeTaskDates(task, lstart, lend,lstarttime,date,passnoworktime);
//                    self.master.endTransaction();
//               }
//                  
//          }
//          inp.updateOldValue(); //in order to avoid multiple call if nothing changed
//      
//    });
//  });
  
  
  
  //binding on blur for task update (date exluded as click on calendar blur and then focus, so will always return false, its called refreshing the task row)
  taskRow.find("input:not(.time,.date,wevdate)").focus(function () {	  
    $(this).updateOldValue();
  }).blur(function () {
      var el = $(this);
      if (el.isValueChanged()) {
        var row = el.closest("tr");
        var taskId = row.attr("taskId");

        var task = self.master.getTask(taskId);

        //update task from editor
        var field = el.attr("name");

        self.master.beginTransaction();

        if (field == "depends") {
          var oldDeps = task.depends;
         if(task.getRow()*1 == el.val()*1-1){
        	 //如果设置自己为前置任务
        	 return false;
         }
          task.depends = el.val();
 
          //start is readonly in case of deps
          if (task.depends) {
           // row.find("[name=start]").attr("readonly", "true");
          } else {
            row.find("[name=start]").removeAttr("readonly");
          }


          // update links
          var linkOK = self.master.updateLinks(task);
          if (linkOK) {
            //synchronize status from superiors states
            var sups = task.getSuperiors();
            for (var i = 0; i < sups.length; i++) {
              if (!sups[i].from.synchronizeStatus())
                break;
            }
            self.master.changeTaskDates(task, task.start, task.end); // fake change to force date recomputation from dependencies
          }

        } else if (field == "duration") { //工期改变
          var dur = task.duration;
          dur = parseInt(el.val()) || 1;
          el.val(dur);
          
          //alert("工期改变"+dur);
          //var newEnd = computeEndByDuration(task.start, dur);
          
          //add by wxp 重新计算时间    
          var startp = new Date(task.start);
          startp = startp.format("yyyy-MM-dd");
          var fullEnd = computeEndByDuration1(startp,task.starttime, dur,task.passnoworktime,task.manager);
          
          //alert("重新计算结束时间"+fullEnd);
          
          var end_new = new Date(fullEnd.split(" ")[0]);   
          var endtime_new = fullEnd.split(" ")[1];
          self.master.changeTaskDates(task, task.start, end_new.getTime(),task.starttime,  endtime_new,  task.passnoworktime);

        } else if (field == "name" && el.val() == "") { // remove unfilled task 删除空任务名为空的
           
           //task.deleteTask();

        } else {
          task[field] = el.val();
        }
        self.master.endTransaction();
      }
    });

  //cursor key movement
  taskRow.find("input").keydown(function (event) {
    var theCell = $(this);
    var theTd = theCell.parent();
    var theRow = theTd.parent();
    var col = theTd.prevAll("td").size();

    var ret = true;
    switch (event.keyCode) {

      case 37: //left arrow
        if(this.selectionEnd==0)
          theTd.prev().find("input").focus();
        break;
      case 39: //right arrow
        if(this.selectionEnd==this.value.length)
          theTd.next().find("input").focus();
        break;

      case 38: //up arrow
        var prevRow = theRow.prev();
        var td = prevRow.find("td").eq(col);
        var inp = td.find("input");

        if (inp.size()>0)
          inp.focus();
        break;
      case 40: //down arrow
        var nextRow = theRow.next();
        var td = nextRow.find("td").eq(col);
        var inp = td.find("input");
        if (inp.size()>0)
          inp.focus();
        else
          nextRow.click(); //create a new row
        break;
      case 36: //home
        break;
      case 35: //end
        break;

      case 9: //tab
       case 13: //enter
       break;
    }
    return ret;

  }).focus(function () {
    $(this).closest("tr").click();
  });


  //change status
  taskRow.find(".taskStatus").click(function () {
    var el = $(this);
    var tr = el.closest("[taskid]");
    var taskId = tr.attr("taskid");
    var task = self.master.getTask(taskId);

    var changer = $.JST.createFromTemplate({}, "CHANGE_STATUS");
    changer.find("[status=" + task.status + "]").addClass("selected");
    changer.find(".taskStatus").click(function (e) {
      e.stopPropagation();
      var newStatus = $(this).attr("status");
      changer.remove();
      self.master.beginTransaction();
      task.changeStatus(newStatus);
      self.master.endTransaction();
      el.attr("status", task.status);
    });
    el.oneTime(3000, "hideChanger", function () {
      changer.remove();
    });
    el.after(changer);
  });
  

  //bind row selection
  taskRow.click(function () {
    var row = $(this);
    //var isSel = row.hasClass("rowSelected");
    row.closest("table").find(".rowSelected").removeClass("rowSelected");
    row.addClass("rowSelected");

    //set current task
    self.master.currentTask = self.master.getTask(row.attr("taskId"));

    //move highlighter
    self.master.gantt.synchHighlight();

    //if offscreen scroll to element
    var top = row.position().top;
    if (top > self.element.parent().height()) {
      row.offsetParent().scrollTop(top - self.element.parent().height() + 100);
    } else if (top<40){
      row.offsetParent().scrollTop(row.offsetParent().scrollTop()-40+top);
    }
  });

};


GridEditor.prototype.openFullEditor = function (task, taskRow) {

  var self = this;

  //task editor in popup
  var taskId = taskRow.attr("taskId");
  //console.debug(task);

  //make task editor
  var taskEditor = $.JST.createFromTemplate({}, "TASK_EDITOR");

  taskEditor.find("#name").val(task.name);
  taskEditor.find("#description").val(task.description);
  taskEditor.find("#code").val(task.code);
  taskEditor.find("#progress").val(task.progress ? parseFloat(task.progress) : 0);
  taskEditor.find("#status").attr("status", task.status);

  if (task.startIsMilestone)
    taskEditor.find("#startIsMilestone").attr("checked", true);
  if (task.endIsMilestone)
    taskEditor.find("#endIsMilestone").attr("checked", true);

  taskEditor.find("#duration").val(task.duration);
  var startDate = taskEditor.find("#start");
  startDate.val(new Date(task.start).format());
  
  var progress_input = taskEditor.find("#progress");//有前置任务,进度不可编辑
  //start is readonly in case of deps
  if (task.depends) {
    //startDate.attr("readonly", "true");
	  
	  var taskpre = task.getSuperiors();
	 // alert(taskpre.length );
	  var flag_progress = false;
	  for(var i=0;i<taskpre.length;i++){
		 var taskp = taskpre[i];
		 if(taskp.from.progress < 100){
			 flag_progress = true;
			 }
		 
		 /* for(var key in taskp.from){
			  		 alert(key);
		  }*/
	  }
	 // alert(flag_progress);
	  if(flag_progress){
		 	  progress_input.attr("readonly", "true"); 
	  }
  } else {
    startDate.removeAttr("readonly");
    progress_input.removeAttr("readonly");
  }

  taskEditor.find("#end").val(new Date(task.end).format());

  //taskEditor.find("[name=depends]").val(task.depends);

  //make assignments table
  var assigsTable = taskEditor.find("#assigsTable");
  assigsTable.find("[assigId]").remove();
  // loop on already assigned resources
  for (var i = 0; i < task.assigs.length; i++) {
    var assig = task.assigs[i];
    var assigRow = $.JST.createFromTemplate({task:task, assig:assig}, "ASSIGNMENT_ROW");
    assigsTable.append(assigRow);
  }

  //define start end callbacks
  function startChangeCallback(date) {
    var dur = parseInt(taskEditor.find("#duration").val());
    date.clearTime();
    taskEditor.find("#end").val(new Date(computeEndByDuration(date.getTime(), dur)).format());
  }

  function endChangeCallback(end) {
    var start = Date.parseString(taskEditor.find("#start").val());
    end.setHours(23, 59, 59, 999);

    if (end.getTime() < start.getTime()) {
      var dur = parseInt(taskEditor.find("#duration").val());
      start = incrementDateByWorkingDays(end.getTime(), -dur);
      taskEditor.find("#start").val(new Date(computeStart(start)).format());
    } else {
      taskEditor.find("#duration").val(recomputeDuration(start.getTime(), end.getTime()));
    }
  }


  if (!self.master.canWrite || !task.canWrite) {
    taskEditor.find("input,textarea").attr("readOnly", true);
    taskEditor.find("input:checkbox,select").attr("disabled", true);
    taskEditor.find("#saveButton").remove();

  } else {

    //bind dateField on dates
    taskEditor.find("#start").click(function () {
      $(this).dateField({
        inputField:$(this),
        callback:  startChangeCallback
      });
    }).blur(function () {
        var inp = $(this);
        if (!Date.isValid(inp.val())) {
          alert(GanttMaster.messages["INVALID_DATE_FORMAT"]);
          inp.val(inp.getOldValue());
        } else {
          startChangeCallback(Date.parseString(inp.val()))
        }
      });

    //bind dateField on dates
    taskEditor.find("#end").click(function () {
      $(this).dateField({
        inputField:$(this),
        callback:  endChangeCallback
      });
    }).blur(function () {
        var inp = $(this);
        if (!Date.isValid(inp.val())) {
          alert(GanttMaster.messages["INVALID_DATE_FORMAT"]);
          inp.val(inp.getOldValue());
        } else {
          endChangeCallback(Date.parseString(inp.val()))
        }
      });

    //bind blur on duration
     taskEditor.find("#duration").change(function () {
      var start = Date.parseString(taskEditor.find("#start").val());
      var el = $(this);
      var dur = parseInt(el.val());
      dur = dur <= 0 ? 1 : dur;
      el.val(dur);
      taskEditor.find("#end").val(new Date(computeEndByDuration(start.getTime(), dur)).format());
    });


    //bind add assignment
    taskEditor.find("#addAssig").click(function () {
      var assigsTable = taskEditor.find("#assigsTable");
      var assigRow = $.JST.createFromTemplate({task:task, assig:{id:"tmp_" + new Date().getTime()}}, "ASSIGNMENT_ROW");
      assigsTable.append(assigRow);
      $("#bwinPopupd").scrollTop(10000);
    });

    taskEditor.find("#status").click(function () {
      var tskStatusChooser = $(this);
      var changer = $.JST.createFromTemplate({}, "CHANGE_STATUS");
      changer.find("[status=" + task.status + "]").addClass("selected");
      changer.find(".taskStatus").click(function (e) {
        e.stopPropagation();
        tskStatusChooser.attr("status", $(this).attr("status"));
        changer.remove();
      });
      tskStatusChooser.oneTime(3000, "hideChanger", function () {
        changer.remove();
      });
      tskStatusChooser.after(changer);
    });


    //save task
    taskEditor.find("#saveButton").click(function () {
      var task = self.master.getTask(taskId); // get task again because in case of rollback old task is lost

      self.master.beginTransaction();
      task.name = taskEditor.find("#name").val();
      task.description = taskEditor.find("#description").val();
      task.code = taskEditor.find("#code").val();
      task.progress = parseFloat(taskEditor.find("#progress").val());
      task.duration = parseInt(taskEditor.find("#duration").val());
      task.startIsMilestone = taskEditor.find("#startIsMilestone").is(":checked");
      task.endIsMilestone = taskEditor.find("#endIsMilestone").is(":checked");

      //set assignments
      taskEditor.find("tr[assigId]").each(function () {
        var trAss = $(this);
        var assId = trAss.attr("assigId");
        var resId = trAss.find("[name=resourceId]").val();
        var roleId = trAss.find("[name=roleId]").val();
        var effort = millisFromString(trAss.find("[name=effort]").val());


        //check if an existing assig has been deleted and re-created with the same values
        var found = false;
        for (var i = 0; i < task.assigs.length; i++) {
          var ass = task.assigs[i];

          if (assId == ass.id) {
            ass.effort = effort;
            ass.roleId = roleId;
            ass.resourceId = resId;
            ass.touched = true;
            found = true;
            break;

          } else if (roleId == ass.roleId && resId == ass.resourceId) {
            ass.effort = effort;
            ass.touched = true;
            found = true;
            break;

          }
        }

        if (!found) { //insert
          var ass = task.createAssignment("tmp_" + new Date().getTime(), resId, roleId, effort);
          ass.touched = true;
        }

      });

      //remove untouched assigs
      task.assigs = task.assigs.filter(function (ass) {
        var ret = ass.touched;
        delete ass.touched;
        return ret;
      });

      //change dates
      task.setPeriod(Date.parseString(taskEditor.find("#start").val()).getTime(), Date.parseString(taskEditor.find("#end").val()).getTime() + (3600000 * 24));

      //change status
      task.changeStatus(taskEditor.find("#status").attr("status"));

      if (self.master.endTransaction()) {
        $("#__blackpopup__").trigger("close");
      }

    });
  }

  var ndo = createBlackPage(800, 500).append(taskEditor);

};