// aimsSelect.js
/*
*  JavaScript template file for ArcIMS HTML Viewer
*		dependent on aimsXML.js, ArcIMSparam.js, aimsCommon.js, aimsMap.js, aimsIdentify, and aimsLayers.js
*		To be interactive, dependent also on aimsDHTML.js, aimsClick.js, and aimsNavigation.js
*/

var aimsSelectPresent=true;
	var fEast;
	var fWest;
	var fSouth;
	var fNorth;
var selectData = new Array();
var selectLeft = new Array();
var selectRight = new Array();
var selectTop = new Array();
var selectBottom = new Array();
var selectLayer="";
var selectType = "";
var selectCount = 0;
var selectBlurb = "";
var selectEnvelope="";
var highlightedOne = "";
	//mode - 0=selection; 1=query
var queryMode=1;
	//mode - 1=query; 2=box,point; 3=line,polygon
var selectionMode=1;
var setQueryString="";
var nancystring = "";

/*
***************************************************************************************

Selection functions 

***************************************************************************************
*/

// select feature
function select(e) {
	getImageXY(e);
	getMapXY(mouseX,mouseY);
	searchTolerance = (xDistance/iWidth) * pixelTolerance;
	var tempWest = mapX - searchTolerance;
	var tempNorth = mapY + searchTolerance;
	var tempEast = mapX + searchTolerance;
	var tempSouth = mapY - searchTolerance;
	queryStartRecord=0;
	selectEnvelope='maxy="' + tempNorth + '" maxx="' + tempEast + '" miny="' + tempSouth + '" minx="' + tempWest + '"';
	selectionMode=2;
	showRetrieveData();
	var theString = writeGetFeatures2(tempWest,tempSouth,tempEast,tempNorth);
	sendToServer(imsQueryURL,theString,selectXMLMode);
}

// start select box display
function startSelectBox(e) {
	moveLayer("theMap",hspc,vspc);
	getImageXY(e);
	// keep it within the MapImage
	if ((mouseX<iWidth) && (mouseY<iHeight)) {
		if (selectBox) {
			stopSelectBox(e);
		} else {
			x1=mouseX;
			y1=mouseY;
			x2=x1+1;
			y2=y1+1;
			zleft=x1;
			ztop=y1;
			zbottom=y1;
			zright=x1;
			boxIt(x1,y1,x2,y2);
			selectBox=true;
			showLayer("zoomBoxTop");
			showLayer("zoomBoxLeft");
			showLayer("zoomBoxRight");
			showLayer("zoomBoxBottom");
		}
		highlightedOne="";
	}
	return false;

}

// stop select box display..... select
function stopSelectBox(e) {
	selectBox=false;
	var tempLeft=lastLeft;
	var tempRight=lastRight;
	var tempTop=lastTop;
	var tempBottom=lastBottom;
	if ((zright <zleft+2) && (zbottom < ztop+2)) {
		getMapXY(mouseX-pixelTolerance,mouseY-pixelTolerance);
		tempLeft = mapX;
		tempTop = mapY;
		getMapXY(mouseX+pixelTolerance,mouseY+pixelTolerance);
		tempRight = mapX;
		tempBottom = mapY;
	} else {
		pixelX = xDistance / iWidth;
		var theY = iHeight - ztop;
		pixelY = yDistance / iHeight;
		tempTop = pixelY * theY + bottom;
		tempRight = pixelX * zright + left;
		tempLeft = pixelX * zleft + left;
		theY = iHeight - zbottom;
		pixelY = yDistance / iHeight;
		tempBottom = pixelY * theY + bottom;
	}
	window.scrollTo(0,0);
	queryStartRecord=0;

	var theString = writeGetFeatures2(tempLeft,tempBottom,tempRight,tempTop,ActiveLayer); //2

  	selectEnvelope='maxy="' + tempTop + '" maxx="' + tempRight + '" miny="' + tempBottom + '" minx="' + tempLeft + '"';
	drawSelectBoundary=true;
	showBuffer=false;
	selectionMode=2;
	hideLayer("zoomBoxTop");
	hideLayer("zoomBoxLeft");
	hideLayer("zoomBoxRight");
	hideLayer("zoomBoxBottom");
	fNorth = tempTop;
	fEast = tempRight;
	fSouth = tempBottom;
	fWest = tempLeft;
	sendToServer(imsQueryURL,theString,selectXMLMode);
}

// write out XML request to select features
function writeGetFeatures2(west1,south1,east1,north1) {
	if (swapSelectFields) {
		selectFields=selFieldList[ActiveLayerIndex];
	}
	var theEnvelope = 'maxy="' + north1 + '" maxx="' + east1 + '" miny="' + south1 + '" minx="' + west1 + '"';
	var theString = writeEnvelopeXML(ActiveLayer,ActiveLayerType,selectFields,maxFeaturesReturned,queryStartRecord,theEnvelope,useLimitExtent);
	selectLayer=ActiveLayer;
	selectType=ActiveLayerType;
	selectCount=0;
	hightlightedOne="";
	selectPoints.length=1;
	selectLeft.length=1;
	selectRight.length=1;
	selectTop.length=1;
	selectBottom.length=1;
	return theString;
}

function writeGetFeatures3() {
	if (swapSelectFields) {
		selectFields=selFieldList[ActiveLayerIndex];
	}
	var theString = writeEnvelopeXML(ActiveLayer,ActiveLayerType,selectFields,maxFeaturesReturned,queryStartRecord,selectEnvelope,useLimitExtent);
	selectLayer=ActiveLayer;
	selectType=ActiveLayerType;
	selectCount=0;
	hightlightedOne="";
	selectPoints.length=1;
	selectLeft.length=1;
	selectRight.length=1;
	selectTop.length=1;
	selectBottom.length=1;
	return theString;
}

// generic envelope select xml write routine
function writeEnvelopeXML(theLayer,theLayerType,theFields,maxReturned,startRec,theEnvelope,hasLimit) {
    var theString = '<?xml version="1.0" encoding="UTF-8"?>\n<ARCXML version="1.1">\n<REQUEST>\n<GET_FEATURES outputmode="xml" envelope="true" geometry="false"';
	theString += ' compact="true" featurelimit="' + maxReturned + '" beginrecord="' + startRec + '">\n';
	theString += '<LAYER id="' + theLayer + '" />';
	theString += '<SPATIALQUERY subfields="' + theFields + '">';
	theString += '<SPATIALFILTER relation="area_intersection" >';
	theString += '<ENVELOPE ' + theEnvelope + ' />';
	theString += '</SPATIALFILTER>';
	if (hasLimit) {
		// keep this within the limitExtent
		theString += '<SPATIALFILTER relation="area_intersection">\n';
		theString += '<ENVELOPE maxx="' + limitRight + '" maxy="' + limitTop + '" minx="' + limitLeft + '" miny="' + limitBottom + '" />\n';
		theString += '</SPATIALFILTER>\n';
	}
	theString += '</SPATIALQUERY>';
	theString += '</GET_FEATURES>';
	theString += '</REQUEST>';
	theString += '</ARCXML>';
	return theString;
}

// write out xml request for selection by shape
function writeShapeSelect(theType) {
	//alert("you are here");
	if (swapSelectFields) {
		selectFields=selFieldList[ActiveLayerIndex];
	}
	var theString = '<?xml version="1.0" encoding="UTF-8"?>\n<ARCXML version="1.1">\n<REQUEST>\n<GET_FEATURES outputmode="xml" envelope="true" geometry="false"';
	theString += ' compact="true" featurelimit="' + maxFeaturesReturned + '" beginrecord="' + queryStartRecord + '">\n';
	theString += '<LAYER id="' + ActiveLayer + '" />';
	theString += '<SPATIALQUERY subfields="' + selectFields + '">';
	theString += '<SPATIALFILTER relation="area_intersection" >';
	if (theType==1) {
		theString += '<POLYLINE>\n<PATH>\n';
	} else {
		theString += '<POLYGON>\n<RING>\n';
	}
	for (var i=0;i<clickCount;i++) {
		theString += '<POINT x="' + clickPointX[i] + '" y="' + clickPointY[i] + '" />\n'; 
	}
	if (theType==2) {
		theString += '</RING>\n</POLYGON>\n';
	} else {
		theString += '</PATH>\n</POLYLINE>\n';
	}
	theString += '</SPATIALFILTER>';
	if (useLimitExtent) {
		// keep this within the limitExtent
		theString += '<SPATIALFILTER relation="area_intersection">\n';
		theString += '<ENVELOPE maxx="' + limitRight + '" maxy="' + limitTop + '" minx="' + limitLeft + '" miny="' + limitBottom + '" />\n';
		theString += '</SPATIALFILTER>\n';
	}
	theString += '</SPATIALQUERY>';
	theString += '</GET_FEATURES>';
	theString += '</REQUEST>';
	theString += '</ARCXML>';
	selectLayer=ActiveLayer;
	selectType=ActiveLayerType;
	selectCount=0;
	hightlightedOne="";
	selectPoints.length=1;
	selectLeft.length=1;
	selectRight.length=1;
	selectTop.length=1;
	selectBottom.length=1;
	return theString;
}

// request a selection using a shape
function sendShapeSelect(theType) {
	queryStartRecord=0;
	selectionMode=3;
	showBuffer=false;
	if (theType==2) {
		if ((clickPointX[0]!=clickPointX[clickCount-1]) && (clickPointY[0]!=clickPointY[clickCount-1])) {
			clickPointX[clickCount]=clickPointX[0];
			clickPointY[clickCount]=clickPointY[0];
			clickCount=clickCount+1;
		}
	}
	showRetrieveData();
	var theString = writeShapeSelect(theType);
	sendToServer(imsQueryURL,theString,selectXMLMode);
}

// request more records to display
function getMoreData(startRecord) {
	var theString = "";
	queryStartRecord = startRecord;
	if (selectionMode==1) {
		//query
		theString = writeQueryXML(setQueryString);
	} else if (selectionMode==2) {
		theString = writeGetFeatures3();
	} else {
		var theType = clickType-1;
		theString = writeShapeSelect(theType);
	}
	showRetrieveData();
	sendToServer(imsQueryURL,theString,selectXMLMode);
}

// refresh map with hightlighted selection
function showHighlight(selNum) {
		highlightedOne = LayerIDField[ActiveLayerIndex] + " = " + selectPoints[selNum];
		var fWidth = selectRight[selNum] - selectLeft[selNum];
		var fHeight = selectTop[selNum] - selectBottom[selNum];
		var mWMargin = 0;
		var mHMargin = 0;
		if (selectType=="point") {			
			mWMargin = fullWidth * selectPointMargin;
			mHMargin = fullHeight * selectPointMargin;
			if (mWMargin > xDistance/2) {
				mWMargin = xDistance/2;
				mHMargin = yDistance/2;
			}
		} else {
			mWMargin = fWidth * selectMargin;
			mHMargin = fHeight * selectMargin; 
		}
		saveLastExtent();
		left = selectLeft[selNum] - mWMargin;
		right = selectRight[selNum] + mWMargin;
		top = selectTop[selNum] + mHMargin;
		bottom = selectBottom[selNum] - mHMargin;
		legendTemp=legendVisible;
		legendVisible=false;
		sendMapXML();
}

// clear current selection
function clearSelection() {
	var theCount = selectCount;
	var theHL = highlightedOne;
	selectCount=0;
	showBuffer=false;
	highlightedOne="";
	selectPoints.length=1;
	selectLeft.length=1;
	selectRight.length=1;
	selectTop.length=1;
	selectBottom.length=1;
	drawSelectBoundary=false;
	if (fromDrill == false) {
		if (useTextFrame) {
			parent.TextFrame.document.open();
			parent.TextFrame.document.writeln('<html>');
			parent.TextFrame.document.writeln('<body BGCOLOR="#D7EBFF"" text="Navy" link="Blue" vlink="Blue">');
			parent.TextFrame.document.writeln('<FONT FACE="Arial" SIZE="-1"><b>' + LayerName[ActiveLayerIndex] + '</b><br>');
			if (toolMode==20) {
				parent.TextFrame.document.writeln('Measure Totals cleared');
				updateMeasureBox()
			} else {
				parent.TextFrame.document.writeln('Selection cleared');
			}
			parent.TextFrame.document.writeln('</body></html>');
			parent.TextFrame.document.close()
		} else {
			if (toolMode==20) {
				showLayer("measureBox");
				updateMeasureBox()
				alert("Measure Totals Cleared");
			} else {
				alert("Selection Cleared");
			}
		}
	}
	showGeocode=false;
	clickCount=0;
	totalMeasure=0;
	currentMeasure=0;
	legendTemp=legendVisible;
	legendVisible=false;
	selectBlurb="";
	showLayer("LoadMap");
	var theString = writeXML();
	sendToServer(imsURL,theString,99);
}

// add Draw Selected Features to Map XML request
function addSelectToMap(){
	var selString = "";
	if ((selectCount>0) && (showSelectedFeatures)) {
		selString +='<LAYER type="FeatureClass" name="Selected_Features" visible="true">\n';
		selString +='<DATASET fromlayer="' + LayerID[ActiveLayerIndex] + '" />\n';
		if (selectionMode==1) {
			selString +='<SPATIALQUERY  where="' + setQueryString + '"';
			if (useLimitExtent) {
				// keep this within the limitExtent
				selString +='>\n<SPATIALFILTER relation="area_intersection">\n';
				selString +='<ENVELOPE maxx="' + limitRight + '" maxy="' + limitTop + '" minx="' + limitLeft + '" miny="' + limitBottom + '" />\n';
				selString +='</SPATIALFILTER>\n';
				selString +='</SPATIALQUERY>\n';
			} else {
			selString +='/>\n';
			}
		} else {
			selString +='<SPATIALQUERY>\n';
			selString +='<SPATIALFILTER relation="area_intersection" >\n';
			if (selectionMode==2) {
				selString +='<ENVELOPE ' + selectEnvelope + ' />\n';
			} else {
				if (clickType==2) {
					selString +='<POLYLINE>\n<PATH>\n';
				} else if (clickType==3) {
					selString +='<POLYGON>\n<RING>\n';
				} else {
					selString +='<MULTIPOINT>\n';
				}
				for (var i=0;i<clickCount;i++) {
					selString +='<POINT x="' + clickPointX[i] + '" y="' + clickPointY[i] + '" />\n'; 
				}
				if (clickType==3) {
					selString +='</RING>\n</POLYGON>\n';
				} else if (clickType==2) {
					selString +='</PATH>\n</POLYLINE>\n';
				} else {
					selString +='</MULTIPOINT>\n';
				}
			}
			selString +='</SPATIALFILTER>\n';
			if (useLimitExtent) {
				// keep this within the limitExtent
				selString +='<SPATIALFILTER relation="area_intersection">\n';
				selString +='<ENVELOPE maxx="' + limitRight + '" maxy="' + limitTop + '" minx="' + limitLeft + '" miny="' + limitBottom + '" />\n';
				selString +='</SPATIALFILTER>\n';
			} 
			selString +='</SPATIALQUERY>\n';
		}
		selString +='<SIMPLERENDERER>\n';
		if (selectType=="point") {
			selString +='<SIMPLEMARKERSYMBOL color="' + selectColor + '" type="Circle" width="10" />\n';
		} else if (selectType=="line") {
			selString +='<SIMPLELINESYMBOL type="SOLID" color="' + selectColor + '" width="3" />\n';
		} else {
			selString +='<SIMPLEPOLYGONSYMBOL fillcolor="' + selectColor + '" filltype="solid" transparency="' + transparentLevel + '" boundarycolor="255,255,255" />\n';
		}
		selString +='</SIMPLERENDERER>\n';
		selString +='</LAYER>\n';
	}
	
	if (selectBlurb!="") {
		// add SelectBlurb to Map XML request
		selString +='<LAYER type="FeatureClass" name="Selected_Features" visible="true">\n';
		selString +='<DATASET fromlayer="' + LayerID[ActiveLayerIndex] + '" />\n';
		selString +='<QUERY where="' + selectBlurb + '" />\n';
		selString +='<SIMPLERENDERER>\n';
		if (selectType=="point") {
			selString +='<SIMPLEMARKERSYMBOL color="' + selectColor + '" type="Circle" width="10" />\n';
		} else if (selectType=="line") {
			selString +='<SIMPLELINESYMBOL type="SOLID" color="' + selectColor + '" width="3" />\n';
		} else {
			selString +='<SIMPLEPOLYGONSYMBOL fillcolor="' + selectColor + '" filltype="solid" transparency="' + transparentLevel + '" boundarycolor="255,255,255" />\n';
		}
		selString +='</SIMPLERENDERER>\n';
		selString +='</LAYER>\n';
	}
	if (highlightedOne!="") {
		// add Draw Highlighed Feature to Map XML request
		selString +='<LAYER type="FeatureClass" name="Highlighted_Feature" visible="true">\n';
		selString +='<DATASET fromlayer="' + LayerID[ActiveLayerIndex] + '" />\n';
		selString +='<QUERY where="' + highlightedOne + '" />\n';
		selString +='<SIMPLERENDERER>\n';
		if (selectType=="point") {
			selString +='<SIMPLEMARKERSYMBOL color="' + highlightColor + '" type="Circle" width="10" />\n';
		} else if (selectType=="line") {
			selString +='<SIMPLELINESYMBOL type="SOLID" color="' + highlightColor + '" width="3" />\n';
		} else {
			//selString +='<SIMPLEPOLYGONSYMBOL FILLCOLOR="' + highlightColor + '" FILLTYPE="Gray" ';
			selString +='<SIMPLEPOLYGONSYMBOL fillcolor="' + highlightColor + '" filltype="solid" transparency="' + transparentLevel + '" boundarycolor="255,255,255" />\n';
		}
		selString +='</SIMPLERENDERER>\n';
		selString +='</LAYER>\n';
	}	
	return selString;
}