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

aimsBufferPresent=true;

var drawTargetLayer = true;
var bufferTargetLayer = "";
var bufferTargetLayerIndex = 0;
var bufferDistance = 5;
var bufferSmoothEdges = 1/100;

var getBufferedData = false;

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

Buffer functions 

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

function writeBufferForm() {
	var url = appDir + "buffer.htm";
	if (useTextFrame) {
		parent.TextFrame.document.location = url;
	} else {
		Win1 = open(url,"BufferWindow","width=575,height=150,scrollbars=yes,resizable=yes");
	}

}


// buffer around selected features
function bufferIt() {
	hideLayer("measureBox");
	//alert("Function not yet enabled.");
	showBuffer=true;
	sendMapXML();
}

// add buffer stuff to Map XML request
function addBufferToMap() {
	var buffString = "";
	//bufferSmoothEdges = bufferDistance /100;
	if (selectionMode==1) {
		if (drawTargetLayer) {
			buffString += '<LAYER type="featureclass" name="' + titleList[24] + '" visible="true">\n';
			buffString += '<DATASET fromlayer="' + LayerID[ActiveLayerIndex] + '" />\n';
			buffString += '<SPATIALQUERY where="' + setQueryString + '" >\n';
			buffString += '<BUFFER distance="' + forceComma(bufferDistance) + '" ';
			
			buffString += ' bufferunits="' + ScaleBarUnits.toLowerCase() + '"';
			buffString += '>\n';
			if (useLimitExtent) {
				// keep this within the limitExtent
				buffString += '<SPATIALQUERY>\n';
				buffString += '<SPATIALFILTER relation="area_intersection">\n';
				buffString += '<ENVELOPE maxx="' + forceComma(limitRight) + '" maxy="' + forceComma(limitTop) + '" minx="' + forceComma(limitLeft) + '" miny="' + forceComma(limitBottom) + '" />\n';
				buffString += '</SPATIALFILTER>\n';
				buffString += '</SPATIALQUERY>\n';
			}
			buffString += '<TARGETLAYER id="' + LayerID[bufferTargetLayerIndex] + '" />\n';
			buffString += '</BUFFER>\n';
			buffString += '</SPATIALQUERY>\n';
			buffString += '<SIMPLERENDERER>\n';
			var tlType = LayerType[bufferTargetLayerIndex];
			if (tlType=="point") {
				buffString += '<SIMPLEMARKERSYMBOL color="' + highlightColor + '" type="Circle" width="10" />\n';
			} else if (tlType=="line") {
				buffString += '<SIMPLELINESYMBOL color="' + highlightColor + '" width="2" />\n';
			} else {
					buffString += '<SIMPLEPOLYGONSYMBOL fillcolor="' + highlightColor + '" filltype="solid" transparency="' + forceComma(5/10) + '" boundarycolor="255,255,255" />\n';
			}
		    buffString += '</SIMPLERENDERER>\n';
			buffString += '</LAYER>\n';
		}
		buffString += '<LAYER type="featureclass" name="' + titleList[25] + '" visible="true">\n';
		buffString += '<DATASET fromlayer="' + LayerID[ActiveLayerIndex] + '" />\n';
		buffString += '<SPATIALQUERY where="' + setQueryString + '" >\n';
		buffString += '<BUFFER distance="' + forceComma(bufferDistance) + '" bufferunits="' + ScaleBarUnits.toLowerCase() + '" />\n';
		buffString += '</SPATIALQUERY>\n';
		buffString += '<SIMPLERENDERER>\n';
		buffString += '<SIMPLEPOLYGONSYMBOL fillcolor="100,100,100" filltype="solid" transparency="' + forceComma(35/100) + '" boundarycolor="255,255,255" />\n';
	    buffString += '</SIMPLERENDERER>\n';
		buffString += '</LAYER>\n';
	} else if ((selectionMode==2) ||(selectionMode==3)){
		if (drawTargetLayer) {
			buffString += '<LAYER type="featureclass" name="' + titleList[26] + '" visible="true">\n';
			buffString += '<DATASET fromlayer="' + LayerID[ActiveLayerIndex] + '" />\n';
			buffString += '<SPATIALQUERY>\n';
			buffString += '<BUFFER distance="' + forceComma(bufferDistance) + '" bufferunits="' + ScaleBarUnits.toLowerCase() + '">\n';
			buffString += '<TARGETLAYER id="' + LayerID[bufferTargetLayerIndex] + '" />\n';
			if (useLimitExtent) {
				// keep this within the limitExtent
				buffString += '<SPATIALQUERY>\n';
				buffString += '<SPATIALFILTER relation="area_intersection">\n';
				buffString += '<ENVELOPE maxx="' + forceComma(limitRight) + '" maxy="' + forceComma(limitTop) + '" minx="' + forceComma(limitLeft) + '" miny="' + forceComma(limitBottom) + '" />\n';
				buffString += '</SPATIALFILTER>\n';
				buffString += '</SPATIALQUERY>\n';
			}
			buffString += '</BUFFER>\n';
			// select rectangle or shape
			buffString += '<SPATIALFILTER relation="area_intersection">\n';
			if (selectionMode==2) {
				buffString += '<ENVELOPE ' + selectEnvelope + ' />\n';
			} else {
				if (clickType==2) {
					buffString += '<POLYLINE>\n<PATH>\n';
				} else if (clickType==3) {
					buffString += '<POLYGON>\n<RING>\n';
				} else {
					buffString += '<MULTIPOINT>\n';
				}
				for (var i=0;i<clickCount;i++) {
					buffString += '<POINT x="' + clickPointX[i] + '" y="' + clickPointY[i] + '" />\n'; 
				}
				if (clickType==3) {
					//buffString += '<POINT x="' + clickPointX[0] + '" y="' + clickPointY[0] + '" />\n';
					buffString += '</RING>\n</POLYGON>\n';
				} else if (clickType==2) {
					buffString += '</PATH>\n</POLYLINE>\n';
				} else {
					buffString += '</MULTIPOINT>\n';
				}
			}
			buffString += '</SPATIALFILTER>\n';
			buffString += '</SPATIALQUERY>\n';
			buffString += '<SIMPLERENDERER>\n';
			var tlType = LayerType[bufferTargetLayerIndex];
			if (tlType=="point") {
				buffString += '<SIMPLEMARKERSYMBOL color="' + highlightColor + '" type="Circle" width="10" />\n';
			} else if (tlType=="line") {
				buffString += '<SIMPLELINESYMBOL color="' + highlightColor + '" width="2" />\n';
			} else {
				buffString += '<SIMPLEPOLYGONSYMBOL fillcolor="' + highlightColor + '" filltype="solid" transparency="' + forceComma(35/100) + '" boundarycolor="255,255,255" />\n';
			}
		    buffString += '</SIMPLERENDERER>\n';
			buffString += '</LAYER>\n';
		}
  			buffString += '<LAYER type="featureclass" name="' + titleList[27] + '" visible="true">\n';
    		buffString += '<DATASET fromlayer="' + LayerID[ActiveLayerIndex] + '" />\n';
    		buffString += '<SPATIALQUERY>\n';
      		buffString += '<BUFFER distance="' + forceComma(bufferDistance) + '" bufferunits="' + ScaleBarUnits.toLowerCase() + '" />\n';
      		buffString += '<SPATIALFILTER relation="area_intersection">\n';
		if (selectionMode==2) {
			buffString += '<ENVELOPE ' + selectEnvelope + ' />\n';
		} else {
			if (clickType==2) {
				buffString += '<POLYLINE>\n<PATH>\n';
			} else if (clickType==3) {
				buffString += '<POLYGON>\n<RING>\n';
			} else {
				buffString += '<MULTIPOINT>\n';
			}
			for (var i=0;i<clickCount;i++) {
				buffString += '<POINT x="' + clickPointX[i] + '" y="' + clickPointY[i] + '" />\n'; 
			}
			if (clickType==3) {
				//buffString += '<POINT x="' + clickPointX[0] + '" y="' + clickPointY[0] + '" />\n';
				buffString += '</RING>\n</POLYGON>\n';
			} else if (clickType==2) {
				buffString += '</PATH>\n</POLYLINE>\n';
			} else {
				buffString += '</MULTIPOINT>\n';
			}
		}
		buffString += '</SPATIALFILTER>\n';
		if (useLimitExtent) {
			// keep this within the limitExtent
			
			buffString += '<SPATIALFILTER relation="area_intersection">\n';
			buffString += '<ENVELOPE maxx="' + forceComma(limitRight) + '" maxy="' + forceComma(limitTop) + '" minx="' + forceComma(limitLeft) + '" miny="' + forceComma(limitBottom) + '" />\n';
			buffString += '</SPATIALFILTER>\n';
			
		}
    		buffString += '</SPATIALQUERY>\n';
    		buffString += '<SIMPLERENDERER>\n';
      		buffString += '<SIMPLEPOLYGONSYMBOL fillcolor="100,100,100" filltype="solid" transparency="' + forceComma(5/10) + '" boundarycolor="255,255,255" />\n';
    		buffString += '</SIMPLERENDERER>\n';
  			buffString += '</LAYER>\n';
	} else {
	  // buffer a user shape
		// not implemented
	}
	
	return buffString;

}


function writeGetBufferedData() {
	var buffString = "";
	//bufferSmoothEdges = bufferDistance /1001;
	//alert(selectionMode);
	queryStartRecord=0;
	showRetrieveData();
	switch(selectionMode) {
		case 1:
			buffString = writeQueryBufferXML();
			break;
		case 2:
			buffString = writeEnvelopeBufferXML();
			break;
		case 3:
			buffString = writeShapeBufferXML(clickType-1);
			break;
		//case 4:
			// buffer a user shape - not implemented
		//	bufferTargetLayerIndex=ActiveLayerIndex;
		//	buffString = writeUserShapeBufferXML(clickType);
		//	break;
	}
	//alert(buffString);	
	return buffString;
}

function writeQueryBufferXML() {
	if (swapSelectFields) {
		selectFields=selFieldList[bufferTargetLayerIndex];
	}
	var targetLayerType = LayerType[bufferTargetLayerIndex];
	var theString = '<ARCXML version="1.1">\n<REQUEST>\n<GET_FEATURES outputmode="xml" geometry="false" envelope="false" checkesc ="true" ';
	//theString += 'compact="true"';
	//theString += ' featurelimit="' + maxFeaturesReturned + '" beginrecord="' + queryStartRecord + '"';
	theString += '>\n';
	theString += '<LAYER id="' + ActiveLayer + '" ftype="' + ActiveLayerType + '" />\n';
	theString += '<SPATIALQUERY where="' + setQueryString + '">\n';
	theString += '<BUFFER distance="' + forceComma(bufferDistance) + '" bufferunits="' + ScaleBarUnits.toLowerCase() + '" >\n'; 
	theString += '<TARGETLAYER id="' + LayerID[bufferTargetLayerIndex] + '"/>\n';
	theString += '<SPATIALQUERY subfields="' + selectFields + '" />\n';
	//theString += '</TARGETLAYER>\n';
	theString += '</BUFFER>\n';
	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>\n';
	theString += '</GET_FEATURES>';
	theString += '</REQUEST>';
	theString += '</ARCXML>';
	//alert("writeQueryXML()\nQuery XML Request:\n" + theString);
	return theString;

}

// write out xml request for selection by shape
function writeShapeBufferXML(theType) {
	if (swapSelectFields) {
		selectFields=selFieldList[bufferTargetLayerIndex];
	}
	var theString = '<ARCXML version="1.1">\n<REQUEST>\n<GET_FEATURES outputmode="xml" envelope="false" geometry="false" checkesc ="true" ';
	//theString += 'compact="true"';
	//theString += ' featurelimit="' + maxFeaturesReturned + '" beginrecord="' + queryStartRecord + '"';
	theString += '>\n';
	theString += '<LAYER id="' + ActiveLayer + '" ftype="' + ActiveLayerType + '" />';
	theString += '<SPATIALQUERY>';
	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 += '<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="' + forceComma(limitRight) + '" maxy="' + forceComma(limitTop) + '" minx="' + forceComma(limitLeft) + '" miny="' + forceComma(limitBottom) + '" />\n';
		theString += '</SPATIALFILTER>\n';
	}
	theString += '<BUFFER distance="' + forceComma(bufferDistance) + '" bufferunits="' + ScaleBarUnits.toLowerCase() + '" >\n'; 
	theString += '<TARGETLAYER id="' + LayerID[bufferTargetLayerIndex] + '">\n';
	theString += '<SPATIALQUERY subfields="' + selectFields + '" />\n';
	theString += '</TARGETLAYER>\n';
	theString += '</BUFFER>\n';
	theString += '</SPATIALQUERY>';
	theString += '</GET_FEATURES>';
	theString += '</REQUEST>';
	theString += '</ARCXML>';
	//alert(theString);
	return theString;
	
}


// generic envelope select xml write routine
function writeEnvelopeBufferXML() {
	if (swapSelectFields) {
		selectFields=selFieldList[bufferTargetLayerIndex];
	}
	var theString = '<ARCXML version="1.1">\n<REQUEST>\n<GET_FEATURES outputmode="xml" envelope="false" geometry="false" checkesc ="true"';
	//theString += ' compact="true"';
	//theString += ' featurelimit="' + maxReturned + '" beginrecord="' + startRec + '"';
	theString += '>\n';
	theString += '<LAYER id="' + ActiveLayer + '" ftype="' + ActiveLayerType + '" />\n';
	theString += '<SPATIALQUERY>';
	theString += '<SPATIALFILTER relation="area_intersection" >\n';
	theString += '<ENVELOPE ' + selectEnvelope + ' />';
	theString += '</SPATIALFILTER>\n';
	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 += '<BUFFER distance="' + forceComma(bufferDistance) + '" bufferunits="' + ScaleBarUnits.toLowerCase() + '" >\n'; 
	theString += '<TARGETLAYER id="' + LayerID[bufferTargetLayerIndex] + '"/>\n';
	theString += '<SPATIALQUERY subfields="' + selectFields + '" />\n';
	//theString += '</TARGETLAYER>\n';
	theString += '</BUFFER>\n';
	theString += '</SPATIALQUERY>';
	theString += '</GET_FEATURES>';
	theString += '</REQUEST>';
	theString += '</ARCXML>';
	return theString;

}


// parse XML response for selected features
function getBufferAttributeData(theReply) {
	setLayerFields(ActiveLayerIndex);
	var url = appDir + "displayBufferAttributeData.htm";
	if (useTextFrame) {
		parent.TextFrame.document.location = url;
	} else {
		var Win1 = open(url,"DataWindow","width=575,height=250,scrollbars=yes,resizable=yes");
		extWin = Win1;
		focusOnData = true;
	}

}