//Javascript code for Water Conflict Chronology Timeline
//created by Matthew Heberger, August 2009
//modified from http://simile-widgets.googlecode.com/svn/timeline/tags/latest/src/webapp/examples/religions/jewish-history.html


var tl;
var eventSource;
var timerID = null;
var resizeTimerID = null;

$(document).ready(function() {

  	//IE does not respect the "selected" attribute of select form objects, so reset them to their defaults.
	$("#epoch").val("%");
	$("#region").val("%");
	$("#conftype").val("%");
	$("#search").val("");
	
	//the little x to celar the search box.
	$("#clearer").click(function(){
	  var curval = $(this).prev("input").val(); 
    $(this).prev("input").val("");
		if (curval != ""){
		  loadNewData();
		}
  });
	
//capture the default behavior of the Enter key on form fields
	$("input").keypress(function (event){ 
	  if (event.keyCode == 13){
		  //need to make the Autocomplete list go away
			$("#search").autocomplete("close");
		  loadNewData();
			return false;
		}
	}
	);
	
	//Set up the autocomplete function
	$("#search").autocomplete({
		source: "../../php/autocomplete.php",
		select: function( event, ui ) {
			$("#search").val(ui.item.value);
			loadNewData();
  	}
	}
	);

  resizeTimeLineDiv();
  eventSource = new Timeline.DefaultEventSource(0);
  var theme = Timeline.ClassicTheme.create();
  // demonstrate highlighting of labels (in addition to icons and tapes)
  theme.event.highlightLabelBackground = true;
  theme.event.bubble.width = 320;
  
  var zones2 = [
        { start:    "1900",
          end:      "2020",
          magnify:  5,
          unit:     Timeline.DateTime.DECADE
        }
  ];
    
  var zones = [
            {   start:    "1840",
                end:      "1930",
                magnify:  10,
                unit:     Timeline.DateTime.DECADE,
                multiple: 1
       },
       
       {   start:    "1930",
           end:      "2013",
           magnify:  100,
           unit:     Timeline.DateTime.YEAR,
           multiple: 1
            }
    ];
    
    var d = Timeline.DateTime.parseGregorianDateTime("2000");
    var bandInfos = [
        Timeline.createHotZoneBandInfo({
            width:          "80%", 
            intervalUnit:   Timeline.DateTime.CENTURY, 
            intervalPixels: 250,
            zones:          zones,
            eventSource:    eventSource,
            date:           d,
            timeZone:       -6,
            theme:          theme
        }),
        Timeline.createHotZoneBandInfo({
            width:          "20%", 
            intervalUnit:   Timeline.DateTime.CENTURY, 
            intervalPixels: 70,
            zones:          zones2,
            eventSource:    eventSource,
            date:           d,
            overview:       true,
            theme:          theme
        })
    ];
    bandInfos[1].syncWith = 0;
    bandInfos[1].highlight = true;
    
    tl = Timeline.create(document.getElementById("timeline"), bandInfos, Timeline.HORIZONTAL);
    loadNewData();
    
    //setupFilterHighlightControls(document.getElementById("controls"), tl, [0,1], theme);
});

function centerTimeline(year) {
    tl.getBand(0).setCenterVisibleDate(new Date(year, 0, 1));
}

function onResize() {
    if (resizeTimerID === null) {
        resizeTimerID = window.setTimeout(function() {
            resizeTimerID = null;
            tl.layout();
        }, 500);
    }
}

function loadNewData(){
  var params = {}
  params.region=document.getElementById('region').value;
  params.conftype = document.getElementById('conftype').value;
  params.epoch = document.getElementById('epoch').value;
	params.search = document.getElementById('search').value;

  
  var jstr = JSON.stringify(params);
  var myURL = '../../php/timeline.php?jstr=' + jstr;
  
  eventSource.clear();
  tl.loadJSON(myURL, function(json, url) {
    eventSource.loadJSON(json, url);
    fillInfo();
		highlightSearchText();
  });
}

function print(str){
  document.getElementById("txt").innerHTML += str + "<br />"
}

function ListProperties(){
  var o = eventSource;
  for(var att in o){
    print(o[att]);
  }
}

function getMinDate(){
  alert(eventSource.getEarliestDate());
}

function fillInfo(){
  var num =eventSource.getCount();
  var begin =eventSource.getEarliestDate();
  var end = eventSource.getLatestDate();
  var myBegin = new Date(begin);
  var myEnd = new Date(end);
  
  document.getElementById("num").innerHTML = num;
  if (num>1){
    var yr = myBegin.getFullYear()+1;
    var a = " entries from <a href=\"javascript:goToDate('" + yr + "');\">" + formatBC(yr) + "</a>";  
    document.getElementById("begin").innerHTML = a;
    
    yr = myEnd.getFullYear();
    if(yr>0){yr+=1;}
    var a = " to <a href=\"javascript:goToDate('" + yr + "');\">" + formatBC(yr) + "</a>";
    document.getElementById("end").innerHTML = a;
    goToDate(myEnd.getFullYear());
  }
  else if (num==1){
    var yr = myBegin.getFullYear();
    var a = " entry in <a href=\"javascript:goToDate('" + yr + "');\">" + formatBC(yr) + "</a>";  
    document.getElementById("begin").innerHTML = a;
    document.getElementById("end").innerHTML = "";
    goToDate(myBegin.getFullYear());
  }
  else {
    document.getElementById("begin").innerHTML = "";
    document.getElementById("end").innerHTML = "entries";
  }
}

function formatBC(yr){
  if (yr>=0){
    return yr;
  }else{
    return -yr + " BC";
  }
}

function goToDate(date) {
    tl.getBand(0).setCenterVisibleDate(SimileAjax.DateTime.parseGregorianDateTime(date));
}

function cleanString(s) {
    return s.replace(/^\s+/, '').replace(/\s+$/, '');
}

function getWindowHeight() {
    if (window.self&&self.innerHeight) {
        return self.innerHeight;
    }
    if (document.documentElement&&document.documentElement.clientHeight) {
        return document.documentElement.clientHeight;
    }
    return 0;
};

function resizeTimeLineDiv() {
  //Resize the height of the div containing the map.
  //Do not call any map methods here as the resize is called before the map is created.
  var d=document.getElementById("timeline");
    var offsetTop=0;
    for (var elem=d; elem!==null; elem=elem.offsetParent) {
        offsetTop+=elem.offsetTop;
    }
    var height=getWindowHeight()-offsetTop-32;
    if (height>=0) {
        d.style.height=height+"px";
    }

};

function highlightSearchText(){
  //highlights the search term
	$term = $("#search").val();
	
	if ($term.length > 0){
	  $("#timeline").highlight($term);
	} else {
	  $('#highlight-plugin').removeHighlight();
	}
}