aimsxml.js

用ARCIMS在客户端框选一块区域求面积。

// aimsXML.js
/*
*  JavaScript template file for ArcIMS HTML Viewer
*		dependent on ArcIMSparam.js, aimsCommon.js, aimsMap.js,
*/

aimsXMLPresent=true;
// client version
var cVersion = "&ClientVersion=3.1"; 
/*
***************************************************************************************

Functions for sending XML requests and XML reponses

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

// global variables
	// change these in aimsCustom.js to send XML response to custom function.
	// use numbers >= 1000
var selectXMLMode = 6;
var identifyXMLMode = 7;
var queryXMLMode = 8;
var findXMLMode = 14;
var hyperlinkXMLMode = 15;

// encoding for XML header
var charEncoding = "UTF-8";
var localeEncoding = 'encoding="' + charEncoding + '" ';

// charset for dynamic HTML pages - static pages must be changed manually
var charSet = "ISO-8859-1"

var formColor = "#000000";

// common dynamic variables
var XMLMode = 1;
var okToSend = true;

var xHalf = xDistance/2;
var yHalf = yDistance/2;

// ending position to start parse scan of XML string
var xmlEndPos = 0;

//var theImageType = "PNG";

var drawOVExtentBox=false;
// force a request for Overview map image with each map request?
var forceNewOVMap = false;
// the base servlet connector URL
var connectorURL = "http://" + hostName + "/servlet/com.esri.esrimap.Esrimap?ServiceName=redirect";

	// index of current active MapService - default is zero - multiples in MultiService sample
var activeMapServiceIndex = 0;
	// array for determining if extent coordinates should have comma instead of point for decimals
var forceCommaInRequest = new Array();
forceCommaInRequest[activeMapServiceIndex] = false;
var forceCommaInOV = false;

var pastStart=false;
if (hasOVMap != true) pastStart = true;

// send in XML request and get XML response - uses helper applet
function sendToServer(URLString,XMLRequest,theType) {
	if (parent.PostFrame.document.forms[0]!=null) {
		if (okToSend) {
			XMLMode = theType;
			if (XMLMode==1) showRetrieveMap();
			
			//theForm = parent.AppletFrame.document.forms[0];
			if (debugOn>2) alert(msgList[8] + URLString + msgList[9] + XMLRequest);
			okToSend = false;
				var theForm = parent.PostFrame.document.forms[0];
				URLString = URLString + cVersion;
				var requestURL = URLString;
				if (theForm.RedirectURL!=null) {
					if (isNotSameHostInURL(URLString, hostName)) {
						requestURL = connectorURL;
						theForm.RedirectURL.value = URLString;
						
					} else {
						theForm.RedirectURL.value = "";
					}

					
				}
				//alert(URLString);
				if (doURLencode) {
					theForm.action = requestURL + "&Form=True&Encode=True";
				} else {
					theForm.action = requestURL + "&Form=True&Encode=False";
				}
				var xmlHeader = '<?xml version="1.0" ' + localeEncoding + '?>';
				theForm.ArcXMLRequest.value = xmlHeader + XMLRequest;
				//if (theForm.FormCharset!=null) theForm.FormCharset.value = charEncoding;
				if (theForm.FormCharset!=null) theForm.FormCharset.value = charSet;
				//alert("ServiceName: " + theForm.action + "\nXMLRequest:\n " + theForm.xmlRequest.value);
				
				if (theForm.BgColor!=null) theForm.BgColor.value = formColor;
				
				theForm.submit();
				
		} else {
			alert(msgList[10]);
			hideRetrieveMap();
			hideRetrieveData();
		}
	} else {
		alert(msgList[11]);
			hideRetrieveMap();
			hideRetrieveData();
	}
		
}

// send custom XML request. . . set up custom response handler
function sendCustomToServer(XMLRequest, theFunction, theType) {
	var theForm = parent.PostFrame.document.forms[0];
	theForm.JavaScriptFunction.value = theFunction;
	sendToServer(imsQueryURL,XMLRequest,theType)
}

// send the created xml request to map server
function sendMapXML() {
	// ask for the Main map
	//window.onerror=clearError;
	beforeMapRefresh();
	//window.onerror=resetError;
	showRetrieveMap();
	var theText = writeXML();
	if (debugOn==2) alert(msgList[12] + theText);
	
	sendToServer(imsURL,theText,1);

}

// process the response xml
function processXML(theReplyIn) {
	if (doURLencode) {
		theReplyIn = replacePlus(theReplyIn);
		var theReply = unescape(theReplyIn);
	} else {
		var theReply = theReplyIn;
	}
	
	okToSend = true;
	if (debugOn>2) alert(msgList[13] + theReply);
	var theError = getXMLErrorMessage(theReply);
	//if (theError!="") {
	//	alert(theError);
	//} else {
	switch(XMLMode) {
		case 1:
			//alert ("Received:\n\n" + theReply);
			var theURL = "";
			theURL = getURL(theReply);
			
			//alert(theURL);
			if (theURL != "") {
				getXYs(theReply);
				document.theImage.src = theURL;
				
				afterMapRefresh();
				//window.onerror=resetError;
				if (toolMode==3) {
					moveLayer("theMap",hspc,vspc);
					clipLayer2("theMap",0,0,iWidth,iHeight);
					window.setTimeout('showLayer("theMap");',1000);
					if (hasLayer("theMapClicks")) {
						moveLayer("theMapClicks",hspc,vspc);
						clipLayer2("theMapClicks",0,0,iWidth,iHeight);
				
					}
				}
				
			}
			else {
				
				if (debugOn>0) {
					alert(msgList[14] + "\n" + theReply);
				} else {
					alert(msgList[14] + theError);
				}
			}
			if (toolMode==20) {
				updateMeasureBox();
			}
			if (legendVisible) {
				showLegend();
			}
			if (hasOVMap) {
				if (ovIsVisible) {
				// ask for the overview
					if ((!pastStart) || (forceNewOVMap)) {
						
						theText = writeOVXML();
						//pastStart=true;
						sendToServer(imsOVURL,theText,2);
					} else {
						putExtentOnOVMap();
						hideRetrieveMap();
					}
				} else {
					if ((!pastStart) || (forceNewOVMap)) {
						theText = writeOVXML();
						sendToServer(imsOVURL,theText,2);
					} else {
						hideRetrieveMap();
					}
				
				}
			} else {
				hideRetrieveMap();
			}
			if (aimsBufferPresent) {
				if (getBufferedData) {
					var buffString = writeGetBufferedData();
					if (buffString!="") {
						sendToServer(imsQueryURL,buffString,11);
					} else {
						alert(msgList[15]);
					}
					getBufferedData=false;
				} 
			}
			break

		case 2:
			// just put up an overview map
			var theURL = "";
			theURL = getURL(theReply);
			if (!pastStart) {
				getOVXYs(theReply);
				pastStart=true;
				
			}
			//alert(theURL);
			if (theURL != "") {
				ovImageVar.src = theURL; 
			}
			else {
			
				if (debugOn>0) {
					alert(msgList[16] + "\n" + theReply);
				} else {
					alert(msgList[16] + theError);
				}
				
			}
			if (ovIsVisible) putExtentOnOVMap();
			hideRetrieveMap();
			
			break

		case 3:
			//  just get full extent - service info
			//alert("processXML()[3]\n" + theReply);
			if (getLimitExtent) {
				getXYs(theReply);
				fullLeft = eLeft;
				fullRight = eRight;
				fullTop = eTop;
				fullBottom = eBottom;
				fullOVLeft = eLeft;
				fullOVRight = eRight;
				fullOVTop = eTop;
				fullOVBottom = eBottom;
				limitLeft = eLeft;
				limitRight = eRight;
				limitTop = eTop;
				limitBottom = eBottom;
				//if ((hasOVMap) && (imsURL!=imsOVURL)) forceCommaInOV = forceCommaInRequest[activeMapServiceIndex];
				//if ((hasOVMap) && (imsURL==imsOVURL)) forceCommaInOV = true;
			} else {
				fullLeft = limitLeft;
				fullRight = limitRight;
				fullTop = limitTop;
				fullBottom = limitBottom;
				fullOVLeft = limitLeft;
				fullOVRight = limitRight;
				fullOVTop = limitTop;
				fullOVBottom = limitBottom;
				
				
			}
			
			fullWidth = Math.abs(fullRight - fullLeft);
			fullHeight = Math.abs(fullTop - fullBottom);
			fullOVWidth = Math.abs(fullOVRight - fullOVLeft);
			fullOVHeight = Math.abs(fullOVTop - fullOVBottom);
			theString = '<ARCXML version="1.1">\n<REQUEST>\n<GET_SERVICE_INFO />\n';
			theString += '</REQUEST>\n</ARCXML>';
			// get list of geocoding layers
			if((aimsGeocodePresent) && ((useGeocode) || (useReverseGeocode))) {
				theString = '<ARCXML version="1.1">\n<REQUEST>\n<GET_SERVICE_INFO  renderer="false" />\n';
				theString += '</REQUEST>\n</ARCXML>';
				sendToServer(imsGeocodeURL,theString,25);
			} else {
				theString = '<ARCXML version="1.1">\n<REQUEST>\n<GET_SERVICE_INFO  renderer="false" extensions="true" />\n';
				theString += '</REQUEST>\n</ARCXML>';
				sendToServer(imsURL,theString,4);
				useGeocode=false;
				useReverseGeocode=false;
				
			}
			
			break

		case 4:
			// get service info - extent, layers
			//alert("processXML()[4]\n" + theReply);
			forceCommaInRequest[activeMapServiceIndex] = false;
			processStartExtent(theReply);
			
			break

		case 5:
			// get a list of ImageServices
			//alert("processXML()[5]\n" + theReply);
			processCatalog(theReply);
			
			break

		case 6:
			// get select response
			displayAttributeData(theReply);
			
			break

		case 7:
			// get identify response
			//alert(theReply);
			displayAttributeData(theReply);
			
			break

		case 8:
			// get query response
			//alert("processXML()[8]\nQuery XML Response:\n" + theReply);
			displayAttributeData(theReply);
			
			break

		case 9:
			// get geocode response
			processGeocode(theReply);
			
			break
		case 10:
			// get identifyall response
			doIdentifyAll(theReply);
			
			break
		case 11:
			// get buffer response
			getBufferAttributeData(theReply)
			break