(function($){$.extend({gantt:new function(){var gnt=this;gnt.defaultType='month';gnt.defaultRange=42;gnt.rangeLimit=200;gnt.graphSize=12;gnt.constract=function(c,o){var i;var p={};if(o==undefined){o={};}
if(o.titles==undefined){o.titles=new Array('Actividades');}
if(o.titles instanceof String){o.titles=new Array(o.titles);}
p.title_length=o.titles.length;if(o.type==undefined){p.type=gnt.defaultType;}else{p.type=o.type;}
if(o.range==undefined){p.range=gnt.defaultRange;}else{p.range=o.range;}
p.tasks=[];p=gnt.addTaskData(p,o.tasks);gnt.setDates(p,o.from,o.to);var gnt_tbl=$('<table border="0" cellpadding="0" cellspacing="0" class="GNT_tbl"></table>');var gnt_Header=$('<tr></tr>');for(i=0;i<o.titles.length;i++){gnt_Header.append('<th class="GNT_head">'+o.titles[i]+'</th>');}
gnt_Header.append('<th class="GNT_cal"></th>');gnt_tbl.append(gnt_Header);c.html(gnt_tbl);c.each(function(){var gnt_tbl=$('table.GNT_tbl',this);$.data(gnt_tbl.get()[0],'params',p);});gnt.write(c);}
gnt.write=function(c){c.each(function(){var gnt_tbl=$('table.GNT_tbl',this);var p=$.data(gnt_tbl.get()[0],"params");var cal=$('<ul></ul>');var calW=0;var liW=0;var wd=0;var y=p.from.y;var m=p.from.m;var d=p.from.d;switch(p.type){case'month':var listUl=$('<ul class="GNT_calList GNT_yearList"></ul>');var remain=gnt.getRemainMonth(p.from.y,p.from.m,p.to.y,p.to.m);if(remain>gnt.rangeLimit){remain=gnt.rangeLimit;}
for(y=p.from.y;y<=p.to.y;y++){year=$('<li><div class="GNT_year">'+y+'</div><div class="GNT_date"></div></li>');wd=(12-(m-1));if(wd>remain){wd=remain;}
liW=wd*gnt.graphSize;$('.GNT_year',year).css({'width':liW});$('.GNT_date',year).css({'width':liW,'background-position':0-(m-1)*gnt.graphSize+'px 0'});listUl.append(year);remain-=wd;calW+=liW;if(remain<=0){break;}
m=1;}
cal.append(listUl.wrap('<li></li>'));break;default:var listUl=$('<ul class="GNT_calList GNT_monthList"></ul>');var month=null;var remain=gnt.getRemainDate(p.from.y,p.from.m,p.from.d,p.to.y,p.to.m,p.to.d);if(remain>gnt.rangeLimit){remain=gnt.rangeLimit;}
for(y=p.from.y;y<=p.to.y;y++){for(m=m;m<=12;m++){month=$('<li><div class="GNT_month">'+y+'/'+m+'</div><div class="GNT_date"></div></li>');wd=gnt.getRemainDate(y,m,d,y,m+1,0);if(wd>remain){wd=remain;}
liW=wd*gnt.graphSize;$('.GNT_month',month).css({'width':liW});$('.GNT_date',month).css({'width':liW,'background-position':0-(d-1)*gnt.graphSize+'px 0'});listUl.append(month);remain-=wd;calW+=liW;if(remain<=0){break;}
d=1;}
m=1;}
cal.append(listUl.wrap('<li></li>'));cal.append('<li class="GNT_day"></li>');$('.GNT_day',cal).css({'background-position':p.dayBgPos+'px 0'});break;}
cal.css({'width':calW});$('th.GNT_cal',gnt_tbl).html(cal);});gnt.writeTask(c);}
gnt.clearTask=function(c){$('tr.GNT_task',c).remove();}
gnt.writeTask=function(c){gnt.clearTask(c);c.each(function(){var gnt_tbl=$('table.GNT_tbl',this);var p=$.data(gnt_tbl.get()[0],"params");for(var i=0;i<p.tasks.length;i++){var trObj=$('<tr class="GNT_task"></tr>');for(var n=0;n<p.title_length;n++){trObj.append('<td class="GNT_title">'+p.tasks[i].titles[n]+'</td>');}
trObj.append('<td class="GNT_chart"></td>');$(".GNT_chart",trObj).addClass('GNT_chart_'+p.type);$(".GNT_chart",trObj).css({'background-position':p.dayBgPos+'px 0'});var s=p.tasks[i].start_date;var e=p.tasks[i].end_date;if(!s||!e){$(".GNT_chart",trObj).append('<span class="GNT_error">Error</span>');gnt_tbl.append(trObj);continue;}
if(!gnt.compareDate(s,p.to)||!gnt.compareDate(p.from,e)){gnt_tbl.append(trObj);continue;}
if(!gnt.compareDate(p.from,s)){s=p.from;}
if(!gnt.compareDate(e,p.to)){e=p.to;}
$(".GNT_chart",trObj).append('<div class="GNT_bar"><div class="GNT_bar_body"> </div></div>');if(p.tasks[i].text){$(".GNT_bar_body",trObj).html(p.tasks[i].text);}
if(p.tasks[i].color){$(".GNT_bar_body",trObj).css({'background-color':p.tasks[i].color});}
switch(p.type){case'month':var barLeft=gnt.diffMonth(p.from.y,p.from.m,s.y,s.m)*gnt.graphSize;var barWidth=gnt.getRemainMonth(s.y,s.m,e.y,e.m)*gnt.graphSize;break;default:var barLeft=gnt.diffDate(p.from.y,p.from.m,p.from.d,s.y,s.m,s.d)*gnt.graphSize;var barWidth=gnt.getRemainDate(s.y,s.m,s.d,e.y,e.m,e.d)*gnt.graphSize;break;}
$(".GNT_bar",trObj).css({'left':barLeft+'px','width':barWidth+'px'});gnt_tbl.append(trObj);}});}
gnt.addTask=function(c,t){if(!(t instanceof Array)){t=Array(t);}
c.each(function(){var gnt_tbl=$('table.GNT_tbl',this);var p=$.data(gnt_tbl.get()[0],"params");p=gnt.addTaskData(p,t);$.data(gnt_tbl.get()[0],'params',p);});gnt.writeTask(c);}
gnt.addTaskData=function(p,t){if(!t){return p;}
if(!(t instanceof Array)){t=Array(t);}
for(var i=0;i<t.length;i++){var task={};if(!t[i].titles){t[i].titles='Task'+(p.tasks.length+1);}
if(!(t[i].titles instanceof Array)){t[i].titles=Array(t[i].titles);}
t[i].start_date=gnt.dateDiv(t[i].start_date);t[i].end_date=gnt.dateDiv(t[i].end_date);p.tasks.push(t[i]);}
return p;}
gnt.remove=function(c){$('table.GNT_tbl',c).remove();}
gnt.setPeriod=function(c,f,t){c.each(function(){var gnt_tbl=$('table.GNT_tbl',this);var p=$.data($('table.GNT_tbl',this).get()[0],"params")
p=gnt.setDates(p,f,t);$.data($('table.GNT_tbl',this).get()[0],"params",p);});gnt.write(c);}
gnt.setType=function(c,type){c.each(function(){var gnt_tbl=$('table.GNT_tbl',this);var p=$.data($('table.GNT_tbl',this).get()[0],"params");p.type=type;p=gnt.setDates(p);$.data($('table.GNT_tbl',this).get()[0],"params",p);});gnt.write(c);}
gnt.setDates=function(p,f,t){if(f&&f.match(/[+-]/)){var s=f.substr(0,1);var r=parseInt(f.substr(1),10);if(!r){r=p.range;}
if(s=='-'){r*=-1;}
f=gnt.getCalcDate(p.from,r,p.type);t=gnt.getCalcDate(f,p.range-1,p.type);}else{f=gnt.dateDiv(f);if(!f){f=gnt.dateDiv('now');}
t=gnt.dateDiv(t);if(!gnt.compareDate(f,t)){t=gnt.getCalcDate(f,p.range-1,p.type);}}
p.from=f;p.to=t;p.dayBgPos=0-gnt.getDayNum(p.from.y,p.from.m,p.from.d)*gnt.graphSize;return p;}
gnt.getDayNum=function(y,m,d){var dateObj=new Date(y,m-1,d);return dateObj.getDay();}
gnt.getRemainDate=function(fy,fm,fd,ty,tm,td){return gnt.diffDate(fy,fm,fd,ty,tm,td)+1;}
gnt.diffDate=function(fy,fm,fd,ty,tm,td){var dateFrom=new Date(fy,fm-1,fd);var dateTo=new Date(ty,tm-1,td);return Math.ceil((dateTo.getTime()-dateFrom.getTime())/(24*60*60*1000));}
gnt.getRemainMonth=function(fy,fm,ty,tm){return gnt.diffMonth(fy,fm,ty,tm)+1}
gnt.diffMonth=function(fy,fm,ty,tm){return(ty-fy)*12+tm-fm;}
gnt.getCalcDate=function(f,r,t){var y=f.y;var m=f.m;var d=f.d;switch(t){case'month':m+=parseInt(r,10);break;default:d+=parseInt(r,10);break;}
var o=new Date(y,m-1,d);return{'y':o.getFullYear(),'m':o.getMonth()+1,'d':o.getDate()}}
gnt.compareDate=function(f,t){if(!t){return false;}
if(new Date(t.y,t.m-1,t.d).getTime()<new Date(f.y,f.m-1,f.d).getTime()){return false;}
return true;}
gnt.dateFormat=function(y,m,d){if(isNaN(y)||isNaN(m)||isNaN(d)){var dateObj=new Date();}else{var dateObj=new Date(y,m-1,d);}
return{'y':dateObj.getFullYear(),'m':dateObj.getMonth()+1,'d':dateObj.getDate()}}
gnt.dateDiv=function(s){if(!s){return false;}
if(s=='now'){var dateObj=new Date();return gnt.dateFormat();}else if(s.match(/^\d{8}$/)){return gnt.dateFormat(parseInt(s.substr(0,4),10),parseInt(s.substr(4,2),10),parseInt(s.substr(6,2),10));}else{var delimiter=['-','/','.'];for(var i=0;i<delimiter.length;i++){if(s.indexOf(delimiter[i])!=-1){var ary=s.split(delimiter[i]);return gnt.dateFormat(parseInt(ary[0],10),parseInt(ary[1],10),parseInt(ary[2],10));}}}
return false;}}});$.fn.extend({gantt:function(o){$.gantt.constract($(this),o);},writeGantt:function(o){$.gantt.write($(this));},addTask:function(t){$.gantt.addTask($(this),t);},setPeriod:function(f,t){$.gantt.setPeriod($(this),f,t);},setType:function(t){$.gantt.setType($(this),t);},removeGantt:function(o){$.gantt.remove($(this));}});})(jQuery);