var syncEnabled = true;
var displayScout = false;
var mouseLocX;
var mouseLocY;
var mousePressed;
var loopSpeed = 500;

var imageCanvas = null,pixelBuffer = null, lookupObj = null, pixelData = null, state = null, tmpCanvas = null, numPixels = 0;
var windowCenter,windowWidth,wlDisplay,modifiedWC,modifiedWW;
var wlApplied = false;

String.prototype.replaceAll = function(pcFrom, pcTo){
    var i = this.indexOf(pcFrom);
    var c = this;
    while (i > -1){
        c = c.replace(pcFrom, pcTo);
        i = c.indexOf(pcFrom);
    }
    return c;
}

function createEvent(eventName, obj) {
	var event,ieVersion;
	if(ieVersion<=11) { //TODO
	} else {
		event = new CustomEvent(
			eventName,{
				detail: obj
			}
		);
	}
	window.dispatchEvent(event);
}

jQuery(document).mouseup(function(e) {
	createEvent("ToolSelection",{tool:"mouseup"});
});

function hideToolbar() {
	jQuery("#toolbarContainer").css("display","none");
	jQuery("#westPane").css("height","100%");
	jQuery("#tabs_div").css("height","100%");
}

function doLayout() {
	jQuery('.toggleOff').removeClass('toggleOff');
	var divElement = document.getElementById('tabs_div');
	jQuery(divElement).children().remove();

	var seriesData = JSON.parse(sessionStorage[pat.studyUID]);
	var cnt = 0,divContent='<table width="100%" height="100%" cellspacing="2" cellpadding="0" border="0" >';

	for(var x=0; x<rowIndex+1;x++) {
		divContent+='<tr>';
		for(var y=0;y<colIndex+1;y++) {
			divContent += '<td><iframe id="frame' + cnt;
            divContent += '" height="100%" width="100%" frameBorder="0" scrolling="yes" ';

            if(cnt < seriesData.length) {
            	var data = seriesData[cnt];
            	while(cnt<seriesData.length && hasOnlyRawData(data['seriesUID'])) {
            		cnt+=1;
            		data = seriesData[cnt];
            	}
            	if(cnt<seriesData.length) {
            		divContent+='src="frameContent.html?study=' + pat.studyUID + '&series=' + data['seriesUID'] + '&seriesDesc=' +  data['seriesDesc'] + '&images=' +  data['totalInstances'] + '&modality=' + data['modality'] +'" style="background:#000; visibility: hidden;"></iframe></td>';
            	} else {
            		divContent += ' ' + 'style="background:#000; visibility: hidden;"></iframe></td>';
            	}
            	cnt+=1;
			} else {
				divContent += ' ' + 'style="background:#000; visibility: hidden;" src="frameContent.html' + '"></iframe></td>';
				cnt+=1;
			}
		} // End of column iteration
	} // End of row iteration
	divContent += '</table>';
	divElement.innerHTML = divContent;
}

function hasOnlyRawData(ser_Uid) {
	return $('#'+ser_Uid.replace(/\./g,'_')+"_table").find('.image').length==0;
}

function showMetaData(queryString) {
	jQuery('#loadingView').show();
	setTimeout(function() {
	    var insUID = getParameter(queryString, 'object');

	    var url = "";
		if(pat.serverURL.indexOf("wado") >=0) {
			url = "Image.do?serverURL=" + pat.serverURL;
	    	url += '&contentType=application/dicom&study=' + pat.studyUID;
	    	url += '&series=' + getParameter(queryString,'series');
	    	url += '&object=' + insUID;
	    	url += '&transferSyntax=1.2.840.10008.1.2';
		} else {
			url = "Wado.do?study=" + pat.studyUID + "&object=" + insUID + "&contentType=application/dicom";
		}

	    var xhr = new XMLHttpRequest();
	    xhr.open('POST', url, true);
	    xhr.responseType = 'blob';

	    xhr.onload = function(e) {
	        if (this.status == 200) {
	            var myBlob = this.response;
	            var reader = new FileReader();
	            reader.onloadend = function(evt) {
	                var dicomParser = new ovm.dicom.DicomParser(evt.target.result);
	                dicomParser.parseAll();

	                // tag list table (without the pixel data)
	                var data = dicomParser.dicomElements;
	                if(data.PixelData!=undefined) {
		                data.PixelData.value = "...";
	                }

	                var node = document.createElement('div');
	                // new table
	                var table = ovm.html.toTable(data);
	                table.className = "tagList";

	                // append new table
	                node.appendChild(table);
	                // display it
	                node.style.display='';

	                // table search form
	                var tagSearchform = document.createElement("form");
	                tagSearchform.setAttribute("class", "filter");
	                var input = document.createElement("input");
	                input.onkeyup = function() {
	                    ovm.html.filterTable(input, table);
	                };

	                var span = document.createElement("span");
	                span.innerHTML = "Search: ";
	                tagSearchform.appendChild(span);
	                tagSearchform.appendChild(input);
	                node.insertBefore(tagSearchform, table);

	                jQuery(node).dialog({
	                    title: 'Meta-data',
	                    modal: true,
	                    height: 500,
	                    width: 700
	                });
	            };

	            reader.readAsBinaryString(myBlob);
	        }
	        jQuery('#loadingView').hide();
	    };
	    xhr.send();
	},1);
}

// To view in fullscreen
function doFullScreen(fullscreenDiv) {
    var fsImg = jQuery(fullscreenDiv).children().get(0);
    var viewContent = document.getElementById('optional-container');
    if(!window.fullScreenApi.isFullScreen()) {
        window.fullScreenApi.requestFullScreen(viewContent);
        fsImg.src = 'images/fullscreen0.png';
    } else {
        window.fullScreenApi.cancelFullScreen(viewContent);
        fsImg.src = 'images/fullscreen1.png';
    }
}

function doInvert(imageCanvas,wlApplied) {
    var iNewWidth = imageCanvas.width;
    var iNewHeight = imageCanvas.height;

    var oCtx = imageCanvas.getContext("2d");
    var dataSrc = oCtx.getImageData(0,0,iNewWidth,iNewHeight);
    var dataDst = oCtx.getImageData(0,0,iNewWidth,iNewHeight);
    var aDataSrc = dataSrc.data;
    var aDataDst = dataDst.data;

    var y = iNewHeight;
    do {
        var iOffsetY = (y-1)*iNewWidth*4;
        var x = iNewWidth;
        do {
            var iOffset = iOffsetY + (x-1)*4;
            if(!wlApplied) {
	            aDataDst[iOffset]   = 255 - aDataSrc[iOffset];
		        aDataDst[iOffset+1] = 255 - aDataSrc[iOffset+1];
		        aDataDst[iOffset+2] = 255 - aDataSrc[iOffset+2];
		        aDataDst[iOffset+3] = aDataSrc[iOffset+3];
	        } else {
	        	aDataDst[iOffset+3] = 255 - aDataSrc[iOffset+3];
	        }
        } while (--x);
    } while (--y);
    oCtx.putImageData(dataDst,0,0);
}

function getActiveFrame() {
    var frames = jQuery(document).find('iframe');

    if(frames.length <= 1) {
        return frames[0];
    } else {
        for(var k=0; k<frames.length; k++) {
            if(jQuery(frames[k]).contents().find('body').css('border') == '1px solid rgb(255, 138, 0)') {
                return frames[k];
            }
        }
    }
}

function getActiveFrameForStudy(studyUid) {
    var frames = jQuery(document).find('iframe');

    for(var k=0; k<frames.length; k++) {
    	if(pat.studyUID==studyUid) {
    		if(frames.length<=1) {
    			return frames[0];
    		}

		    if(jQuery(frames[k]).contents().find('body').css('border') == '1px solid rgb(255, 138, 0)') {
		        return frames[k];
		    }
	    } else { // Other study
			if(jQuery(frames[k]).contents().find('#studyId').html()==studyUid) {
				return frames[k];
			}
	    }
    }
    return undefined;
}

function changeLayout(layoutUrl) {
    jQuery('#contentDiv').html('');
    jQuery('#contentDiv').load(layoutUrl);
    jQuery('#contentDiv').show();

    jQuery("#contentDiv").mouseleave(function() {
        jQuery(this).hide();
    });
}

function setSeriesIdentification() {
	var framesCnt = jQuery(document).find('iframe');

	jQuery('.seriesImgsIndex', document).each(function() {
		var children = jQuery(this).children();
		var imgCnt = 0;
		children.each(function() {
			var bgColor = jQuery(this).css('background-color');

			if(bgColor == 'rgb(255, 0, 0)') {
				var imgToggleMode = jQuery(this).parent().next().find('img').attr('src');
				if(imgToggleMode == 'images/three.png') {
					if(imgCnt == 0 || imgCnt == Math.round(children.size()/2)-1 || imgCnt == children.size()-1) {
						jQuery(this).css('background-color', 'rgb(0, 0, 255)');
					} else {
						jQuery(this).css('background-color', !jQuery(this).hasClass('waiting') ? 'rgb(166, 166, 166)' : 'rgb(70, 70, 70)');
					}
				} else if(imgToggleMode == "images/one.png") {
					if(imgCnt==0) {
						jQuery(this).css('background-color', 'rgb(0, 0, 255)');
					} else {
						jQuery(this).css('background-color', !jQuery(this).hasClass('waiting') ? 'rgb(166, 166, 166)' : 'rgb(70, 70, 70)');
					}
				} else {
					jQuery(this).css('background-color', 'rgb(0, 0, 255)');
				}
			}
			imgCnt++;
			});
	});
	for(var x=0;x<framesCnt.size();x++) {
		var contents = jQuery(framesCnt[x]).contents();
		if(contents.find('#serId').html()!=null){
			if(jQuery(contents.find('#multiframe')).css('visibility')!="hidden") {
				var object = getParameter(contents.find('#frameSrc').html(),"object");
				var cont_td = jQuery('#' + object.replace(/\./g,'_'), document);

				jQuery(cont_td.children().get(0)).css('background-color', 'rgb(255,0,0)');
			} else {
				var serUidTmp = contents.find('#serId').html().split('_');
				var cont_td = jQuery('#' + serUidTmp[0].replace(/\./g,'_'), document);

				var i = 1;

				cont_td.children().each(function(){
					if(i==serUidTmp[1]) {
						jQuery(this).css('background-color', 'rgb(255,0,0)');
					}
					i++;
				});
			}
		}
    }
}

function doSyncSeries() {
	 var curr = jQuery('#syncSeries');

	    if(!syncEnabled) {
	        syncEnabled = true;
	        curr.children().get(0).src= 'images/Link.png';
	    } else {
	        syncEnabled = false;
	        curr.children().get(0).src= 'images/unlink.png';
	    }
}

function enableWindowingContext() {
	jQuery('#windowing').enableContextMenu();
}

function disableWindowingContext() {
	jQuery('#windowing').disableContextMenu();
}

function enableMeasureContext() {
	jQuery('#measure').enableContextMenu();
}

function disableMeasureContext() {
	jQuery('#measure').disableContextMenu();
}

function repositionTiles(src) {
	var table = jQuery('#tabs_div').children().get(0);
	var tr = table.rows[0];
	var td = tr.insertCell(jQuery(tr).children().length);
	td.innerHTML = '<td> <iframe height="100%" width="100%" frameBorder=0 scrolling="no" style="visibility: hidden;" src="' + src+ '"></iframe> </td>';
}