function newTd(cn, text) { var retVal = document.createElement("td"); if(text.length > 0)
retVal.appendChild(document.createTextNode(text)); retVal.className = cn; return retVal;}
function newWeekday(text) { var retVal = document.createElement("td"); retVal.appendChild(document.createTextNode(text)); retVal.className = "weekday"; return retVal;}
function makeSchedule() { var tbody = document.getElementById("scheduletbody"); for(var hour=7;hour<=21;hour++) { if(hour < 12)
var timeStr = hour+":00a"; else if(hour == 12)
var timeStr = "12:00p"; else
var timeStr = (hour-12)+":00p"; var row00 = document.createElement("tr"); row00.id = hour+":0"; row00.className = "hourrow"; var hourtd = newTd("hour firstcol",timeStr); hourtd.rowSpan = 12; row00.appendChild(hourtd); row00.appendChild(newTd(null,"")); row00.appendChild(newTd(null,"")); row00.appendChild(newTd(null,"")); row00.appendChild(newTd(null,"")); row00.appendChild(newTd(null,"")); tbody.appendChild(row00); for(var minoffset=5;minoffset<=55;minoffset+=5) { var newrow = document.createElement("tr"); newrow.id = hour+":"+minoffset; for(var i=0;i<5;i++)
newrow.appendChild(newTd(null,"")); tbody.appendChild(newrow);}
}
}
function clampSchedule() { for(var i=7;i<=21;i++) { document.getElementById(i+":0").className = "hourrow"; for(var j=5;j<=55;j+=5) { document.getElementById(i+":"+j).className="";}
}
clampBeginningToEnd(); clampEndToBeginning();}
function clampBeginningToEnd() { for(var i=7;i<=21;i++) { var hour = i; var am = ((hour<12)?true:false); if(hour>12) hour -= 12; for(var j=0;j<classes.length;j++) { if(classes[j].from.hour == hour && classes[j].from.am == am) { return;}
}
document.getElementById(i+":0").className = "hourrow noprint"; for(var j=5;j<=55;j+=5) { document.getElementById(i+":"+j).className = "noprint";}
}
}
function clampEndToBeginning() { for(var i=21;i>=7;i--) { var hour = i; var am = ((hour<12)?true:false); if(hour>12) hour -= 12; for(var j=0;j<classes.length;j++) { if(classes[j].to.hour == hour && classes[j].to.am == am) { return;}
}
document.getElementById(i+":0").className = "hourrow noprint"; for(var j=5;j<=55;j+=5) { document.getElementById(i+":"+j).className = "noprint";}
}
}
function addToSchedule(classobj) { classes.push(classobj); if(classobj.mon)
_addScheduleTD(0,classobj); if(classobj.tues)
_addScheduleTD(1,classobj); if(classobj.wed)
_addScheduleTD(2,classobj); if(classobj.thurs)
_addScheduleTD(3,classobj); if(classobj.fri)
_addScheduleTD(4,classobj); clampSchedule();}
function _addScheduleTD(idx, classobj) { var item = document.createElement("span"); item.id = "scheduleitem_"+classobj.id+"_"+idx; item.appendChild(document.createTextNode(classobj.courseName)); item.appendChild(document.createElement("br")); item.appendChild(document.createTextNode(classobj.from.toString()+" "+classobj.to.toString())); var thetd = getTdForTime(classobj.from, idx); thetd.rowSpan = getTimespan(classobj.from, classobj.to); thetd.className = "scheduleitem"; thetd.appendChild(item); setAllOverlaps(classobj.from, classobj.to, idx, "none");}
function setAllOverlaps(from, to, idx, display) { var minute = from.minuteNearestMultipleOfFive(); var hour = from.hour; if(!from.am && hour != 12)
hour += 12; if(minute == 60) { hour++; minute = 0;}
var numberOfFives = getTimespan(from, to); for(var i=0;i<numberOfFives-1;i++) { minute+=5; if(minute == 60) { minute = 0; hour++;}
if(hour > 21)
return; var thetd = getTdForTime2(hour,minute,idx); thetd.style.display = display;}
}
function getTimespan(from, to) { return parseInt(Math.round(from.minutesUntil(to) / 5.0));}
function getTimeOffsetLeft(timeTd) { var offset = 0; offset += timeTd.offsetLeft; return offset;}
function getTimeOffsetTop(timeTd) { var offset = 0; offset += timeTd.offsetTop; return offset;}
function getTdForTime(time, idx) { var minute = time.minuteNearestMultipleOfFive(); var hour = time.hour; if(!time.am && hour != 12)
hour += 12; if(minute == 60) { hour++; minute = 0;}
return getTdForTime2(hour,minute,idx);}
function getTdForTime2(hour, minute, idx) { var therow = document.getElementById(hour + ":" + minute); if(minute == 0)
idx++; return therow.childNodes[idx];}
function setAllOverlapsForClass(classobj, display) { if(classobj.mon)
setAllOverlaps(classobj.from, classobj.to, 0, display); if(classobj.tues)
setAllOverlaps(classobj.from, classobj.to, 1, display); if(classobj.wed)
setAllOverlaps(classobj.from, classobj.to, 2, display); if(classobj.thurs)
setAllOverlaps(classobj.from, classobj.to, 3, display); if(classobj.fri)
setAllOverlaps(classobj.from, classobj.to, 4, display);}
function removeFromSchedule(id) { var classFound = false; for(var i=0;i<classes.length;i++) { if(classes[i].id == id) { classFound = true; setAllOverlapsForClass(classes[i], ""); classes.splice(i,1); break;}
}
if(!classFound) { alert("warning: classToRemove is null"); return;}
for(var i=0;i<5;i++) { var node = document.getElementById("scheduleitem_"+id+"_"+i); if(node) { node.parentNode.className=""; node.parentNode.rowSpan=1; node.parentNode.removeChild(node);}
}
clampSchedule(); return;}