// 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
*/

aimsSelectPresent=true;

var selectData = new Array();
var selectLeft = new Array();
var selectRight = new Array();
var selectTop = new Array();
var selectBottom = new Array();
var selMaxEnvelope = 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 shapeBufferDistance = 0;


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

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=1;
	selectEnvelope='maxy="' + forceComma(tempNorth) + '" maxx="' + forceComma(tempEast) + '" miny="' + forceComma(tempSouth) + '" minx="' + forceComma(tempWest) + '"';
	selectionMode=2;
	showRetrieveData();
	var theString = writeGetFeatures2(tempWest,tempSouth,tempEast,tempNorth);
	sendToServer(imsQueryURL,theString,selectXMLMode);
}

// start select box display
function startSelectBox(e) {
	if (checkIfActiveLayerAvailable()) {
		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;
	hideLayer("zoomBoxTop");
	hideLayer("zoomBoxLeft");
	hideLayer("zoomBoxRight");
	hideLayer("zoomBoxBottom");
	if ((zright <zleft+2) && (zbottom < ztop+2)) {
		
		getMapXY(mouseX,mouseY);
		searchTolerance = (xDistance/iWidth) * pixelTolerance;
		tempLeft = mapX-searchTolerance;
		tempTop = mapY-searchTolerance;
		tempRight = mapX+searchTolerance;
		tempBottom = mapY+searchTolerance;
		
	} else {
		pixelX = xDistance / iWidth;
		var theY = iHeight - ztop;
		pixelY = yDistance / iHeight;
		tempTop = pixelY * theY + eBottom;
		tempRight = pixelX * zright + eLeft;
		tempLeft = pixelX * zleft + eLeft;
		theY = iHeight - zbottom;
		pixelY = yDistance / iHeight;
		tempBottom = pixelY * theY + eBottom;
	}
		window.scrollTo(0,0);
	
	queryStartRecord=1;
	var theString = writeGetFeatures2(tempLeft,tempBottom,tempRight,tempTop);
	selectEnvelope='maxy="' + forceComma(tempTop) + '" maxx="' + forceComma(tempRight) + '" miny="' + forceComma(tempBottom) + '" minx="' + forceComma(tempLeft) + '"';
	drawSelectBoundary=true;
	showBuffer=false;
	selectionMode=2;
	sendToServer(imsQueryURL,theString,selectXMLMode);
	return true;

}

// write out XML request to select features
function writeGetFeatures2(west1,south1,east1,north1) {
	if (swapSelectFields) {
		selectFields=selFieldList[ActiveLayerIndex];
		//alert(selectFields);
	}
	var theEnvelope = 'maxy="' + forceComma(north1) + '" maxx="' + forceComma(east1) + '" miny="' + forceComma(south1) + '" minx="' + forceComma(west1 )+ '"';
	var theString = writeEnvelopeXML(ActiveLayer,ActiveLayerType,selectFields,maxFeaturesReturned,queryStartRecord,theEnvelope,useLimitExtent);
	//alert(theString);
	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);
	//alert(theString);
	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 = '<ARCXML version="1.1">\n<REQUEST>\n<GET_FEATURES outputmode="xml" envelope="true" geometry="false" checkesc ="true"';
	theString += ' 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="' + forceComma(limitRight) + '" maxy="' + forceComma(limitTop) + '" minx="' + forceComma(limitLeft) + '" miny="' + forceComma(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) {
	if (swapSelectFields) {
		selectFields=selFieldList[ActiveLayerIndex];
	}
	var theString = '<ARCXML version="1.1">\n<REQUEST>\n<GET_FEATURES outputmode="xml" envelope="true" geometry="false" checkesc ="true"';
	theString += ' featurelimit="' + maxFeaturesReturned + '" beginrecord="' + queryStartRecord + '">\n';
	theString += '<LAYER id="' + ActiveLayer + '" />';
	theString += '<SPATIALQUERY subfields="' + selectFields + '">';
	theString += '<SPATIALFILTER relation="area_intersection" >';
	if ((shapeSelectBuffer) && (shapeBufferDistance>0)) {
		// do a buffer around the shape before selecting
		
		theString += '<BUFFER distance="' + forceComma(shapeBufferDistance) + '" ';
		
		theString += ' bufferunits="' + ScaleBarUnits + '"';
		theString += ' />\n';
	}
	if (theType==1) {
		theString += '<POLYLINE>\n<PATH>\n';
	} else if (theType==2) {
		theString += '<POLYGON>\n<RING>\n';
	} else {
		theString += '<MULTIPOINT>\n';
	}
	if (theType==0) {
		theString += '<POINT x="' + clickPointX[clickCount-1] + '" y="' + clickPointY[clickCount-1] + '" />\n';
	} else {
		for (var i=0;i<clickCount;i++) {
			theString += '<POINT x="' + clickPointX[i] + '" y="' + clickPointY[i] + '" />\n'; 
		}
	}
	if (theType==0) {
		theString += '</MULTIPOINT>\n';
	} else 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="' + forceComma(limitRight) + '" maxy="' + forceComma(limitTop) + '" minx="' + forceComma(limitLeft) + '" miny="' + forceComma(limitBottom) + '" />\n';
		theString += '</SPATIALFILTER>\n';
	}
	theString += '</SPATIALQUERY>';
	theString += '</GET_FEATURES>';
	theString += '</REQUEST>';
	theString += '</ARCXML>';
	//alert(theString);
	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=1;
	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];
		//alert(selectLeft[selNum] + "," + selectRight[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();
		eLeft = selectLeft[selNum] - mWMargin;
		eRight = selectRight[selNum] + mWMargin;
		eTop = selectTop[selNum] + mHMargin;
		eBottom = selectBottom[selNum] - mHMargin;
		//alert(highlightedOne);
			legendTemp=legendVisible;
			legendVisible=false;
			sendMapXML();
			
}

// calculate max envelope for returned records
function calcSelectEnvelope() {
	//alert(selectCount);
	if (selectCount>0) {
		selMaxEnvelope[0] = parseFloat(selectLeft[0]);
		selMaxEnvelope[1] = parseFloat(selectBottom[0]);
		selMaxEnvelope[2] = parseFloat(selectRight[0]);
		selMaxEnvelope[3] = parseFloat(selectTop[0]);
		//alert("0 - " + selMaxEnvelope[0] + "," + selMaxEnvelope[1] + "," + selMaxEnvelope[2] + "," + selMaxEnvelope[3]);
		if (selectCount>1) {
			for (var i=1;i<selectCount;i++) {
				if (parseFloat(selectLeft[i])<selMaxEnvelope[0]) selMaxEnvelope[0] = parseFloat(selectLeft[i]);
				if (parseFloat(selectBottom[i])<selMaxEnvelope[1]) selMaxEnvelope[1] = parseFloat(selectBottom[i]);
				if (parseFloat(selectRight[i])>selMaxEnvelope[2]) selMaxEnvelope[2] = parseFloat(selectRight[i]);
				if (parseFloat(selectTop[i])>selMaxEnvelope[3]) selMaxEnvelope[3] = parseFloat(selectTop[i]);
				//alert(i + " - " + selMaxEnvelope[0] + "," + selMaxEnvelope[1] + "," + selMaxEnvelope[2] + "," + selMaxEnvelope[3]);
			}
		}
	}
}

function zoomToReturnedRecords() {
	calcSelectEnvelope();
	var fWidth = selMaxEnvelope[2] - selMaxEnvelope[0];
	var fHeight = selMaxEnvelope[3] - selMaxEnvelope[1];
	var mWMargin = 0;
	var mHMargin = 0;
	if ((fWidth==0) && (fHeight==0)) {			
		mWMargin = fullWidth * selectPointMargin;
		mHMargin = fullHeight * selectPointMargin;
		if (mWMargin > xDistance/2) {
			mWMargin = xDistance/2;
			mHMargin = yDistance/2;
		}
	} else {
		mWMargin = fWidth * selectMargin;
		mHMargin = fHeight * selectMargin; 
	}
	saveLastExtent();
	eLeft = selMaxEnvelope[0] - mWMargin;
	eRight = selMaxEnvelope[2] + mWMargin;
	eTop = selMaxEnvelope[3] + mHMargin;
	eBottom = selMaxEnvelope[1] - mHMargin;
	sendMapXML();

}
// clear current selection
function clearSelection() {
	var theCount = selectCount;
	var theHL = highlightedOne;
	selectCount=0;
	showBuffer=false;
	highlightedOne="";
	selectPoints.length=0;
	selectLeft.length=0;
	selectRight.length=0;
	selectTop.length=0;
	selectBottom.length=0;
	drawSelectBoundary=false;
	showGeocode=false;
	clickCount=0;
	totalMeasure=0;
	currentMeasure=0;
	if (useTextFrame) {
		parent.TextFrame.document.open();
		parent.TextFrame.document.writeln('<meta http-equiv="Content-Type" content="text/html; charset=' + charSet + '"><html>');
		parent.TextFrame.document.writeln('<body bgcolor="White" text="Black" 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(msgList[70]);
			updateMeasureBox()
			}
		else 
			parent.TextFrame.document.writeln(msgList[71]);
		parent.TextFrame.document.writeln('</body></html>');
		parent.TextFrame.document.close()
	} else {
		if (toolMode==20) {
			showLayer("measureBox");
			updateMeasureBox()
			alert(msgList[70]);
		} else {
			alert(msgList[71]);
		}
	}

	sendMapXML();

}

// add Draw Selected Features to Map XML request
function addSelectToMap(){
	var selString = "";
	
	var sFactor = (eRight-eLeft) / iWidth;
    var aspectRatio = iWidth / iHeight;
    var extentRatio = (eRight-eLeft) / (eTop-eBottom);
    if (extentRatio < aspectRatio) sFactor = (eTop-eBottom) / iHeight;
	selectType = LayerType[ActiveLayerIndex];
	if (((sFactor>=LayerMinScale[ActiveLayerIndex]) && (sFactor<=LayerMaxScale[ActiveLayerIndex]) && (LayerVisible[ActiveLayerIndex]==1)) || (canSelectInvisible)) {
		if ((selectCount>0) && (showSelectedFeatures)) {
			selString +='<LAYER type="featureclass" name="' + titleList[22] + '" 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="' + forceComma(limitRight) + '" maxy="' + forceComma(limitTop) + '" minx="' + forceComma(limitLeft) + '" miny="' + forceComma(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 ((shapeSelectBuffer) && (shapeBufferDistance>0)) {
						// do a buffer around the shape before selecting
						
						selString += '<BUFFER distance="' + forceComma(shapeBufferDistance) + '" ';
						
						selString += ' bufferunits="' + ScaleBarUnits + '"';
						selString += ' />\n';
					}
					if (clickType==2) {
						selString +='<POLYLINE>\n<PATH>\n';
					} else if (clickType==3) {
						selString +='<POLYGON>\n<RING>\n';
					} else {
						selString +='<MULTIPOINT>\n';
					}
					if (clickType==1) {
						selString +='<POINT x="' + clickPointX[clickCount-1] + '" y="' + clickPointY[clickCount-1] + '" />\n';
					} else {
						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="' + forceComma(limitRight) + '" maxy="' + forceComma(limitTop) + '" minx="' + forceComma(limitLeft) + '" miny="' + forceComma(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="' + forceComma(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="' + titleList[22] + '" 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="' + forceComma(transparentLevel) + '" boundarycolor="255,255,255" />\n';
				}
			selString +='</SIMPLERENDERER>\n';
			selString +='</LAYER>\n';
		
		}
		
		if (!isArcMapService) {
			if (highlightedOne!="") {
				// add Draw Highlighed Feature to Map XML request
				selString +='<LAYER type="featureclass" name="' + titleList[23] + '" 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="solid" transparency="' + forceComma(transparentLevel) + '" boundarycolor="255,255,255" />\n';
				}
				selString +='</SIMPLERENDERER>\n';
				selString +='</LAYER>\n';
				//alert(selString);
			}	
		}
	}
	return selString;
}