// display_measure.js

var m_currentMeasureToolbarTool = "polyline";
var m_measureToolbarImagePath = "images/";
var m_measureToolbarImageExtension = ".gif";
var m_measureDisplay = "MeasureDisplay";
var m_measureToolbarId = "MeasureToolbar";
var m_measureLengthsTotal = 0.0;
var m_measureAreasTotal = 0.0;
var m_measureXOffset = 0;
var m_measureYOffset = 0;
var m_MeasureTypes = new Array();
m_MeasureTypes[0] = "point";
m_MeasureTypes[1] = "polyline";
m_MeasureTypes[2] = "polygon";
var m_measureMoveFunction = null;
var m_measureCoords = "";
var m_measureLastCoords = "";
var m_measureMouseUpSet = false;

var m_measureToolbar = null;
var m_measureGraphicFeature = null;

function checkMeasureToolbarBorder(cell, type) {
	if (type.toLowerCase()==m_currentMeasureToolbarTool)
		cell.style.borderColor = "Black";
	else
		cell.style.borderColor = "White";  
}

// set current measure tool
function setMeasureToolbarTool(type) {
	m_currentMeasureToolbarTool = type.toLowerCase();
	var cellObj;
	var buttonId = "";
	for (var i=0; i<m_MeasureTypes.length; i++) {
		buttonId = "MeasureToolbarButton_" + m_MeasureTypes[i];
		cellObj = document.getElementById(buttonId);
		if (cellObj!=null) {
			if (m_MeasureTypes[i]==m_currentMeasureToolbarTool) {
				cellObj.style.borderColor = "Black";
				cellObj.style.backgroundColor = "#EEEEEE";
				startMeasure();
			}
			else {
				cellObj.style.borderColor = "White";
				cellObj.style.backgroundColor = "White";
			}
		}
	}
}


// Polyline Measure action ... for distances
function MeasurePolyline(map) {
	if (map!=null) {
		map.getGeometry(ESRI.ADF.Graphics.ShapeType.Path,MapCoordsClick,null,'black','blue','crosshair', true);
		vectortoolbar = "MeasureToolbar";
	}
}

// Polygon Measure action ... for areas
function MeasurePolygon(map) {
	if (map!=null) {
		map.getGeometry(ESRI.ADF.Graphics.ShapeType.Ring,MapCoordsClick,null,'black','black','crosshair', true);
		vectortoolbar = "MeasureToolbar";
	}
}

// Point Measure action ... for location coordinates
function MeasurePoint(map) {
	if (map!=null) {
		map.getGeometry(ESRI.ADF.Graphics.ShapeType.Point,MapCoordsClick,null,'black',null,'pointer', true);
	}	
}

// Handler for MeasurePoint clicks
function MapCoordsClick(geom, evtArgs) {
	var geomString = '';
	var type = '';
	removeMeasureGraphic();
	var style = null; 
	if(ESRI.ADF.Geometries.Point.isInstanceOfType(geom)) {
		geomString = geom.toString(':');
		type = 'point';
		style = new ESRI.ADF.Graphics.MarkerSymbol("images/crosshair.png",6,6);
	}
	else if(ESRI.ADF.Geometries.Polyline.isInstanceOfType(geom)) {
		geomString = geom.getPath(0).toString('|',':');
		type = 'polyline';
		style = new ESRI.ADF.Graphics.LineSymbol("black",2);
	}
	else if(ESRI.ADF.Geometries.Polygon.isInstanceOfType(geom)) {
		geomString = geom.getRing(0).toString('|',':');
		type = 'polygon';
		style = new ESRI.ADF.Graphics.FillSymbol("black","black",2);
		style.set_opacity(0.2);	
	}
	m_measureGraphicFeature = $create(ESRI.ADF.Graphics.GraphicFeature,
				{"id": "MeasurePointIcon","geometry":geom,"symbol":style});
	map.addGraphic(m_measureGraphicFeature);
	coordString = geomString;
	  	
	m_measureLastCoords = m_measureCoords;
	m_measureCoords = "";
	var argument = 'ControldID='+map.get_id()+'&EventArg='+type+'&coords='+geomString+'&VectorMode=measure';	
	if (checkForFormElement(document, 0, "MeasureUnits")) argument += "&MeasureUnits=" + document.forms[0].MeasureUnits.value;
	if (checkForFormElement(document, 0, "AreaUnits")) argument += "&AreaUnits=" + document.forms[0].AreaUnits.value;
	if (checkForFormElement(document, 0, "MapUnits")) argument += "&MapUnits=" + document.forms[0].MapUnits.options[document.forms[0].MapUnits.selectedIndex].value;

	var context = this;
	eval(measureVectorCallbackFunctionString);
}

function MeasureCoordsMouseUp(sender, args) {
	m_measureToolbar = $get(m_measureToolbarId);
	if (m_measureToolbar!=null) {
		m_measureToolbar.style.display = "";
	}
	if (m_currentMeasureToolbarTool!="point") {
		var coords = args.coordinate;
		if (coords!=null && !isNaN(coords.get_x()) && !isNaN(coords.get_y())) {
			// ignore null or non-numeric input
			if (m_measureCoords.length>0) {
				if (args.button==Sys.UI.MouseButton.rightButton) {
					var pos = m_measureCoords.lastIndexOf("|");
					m_measureCoords =  m_measureCoords.substring(0,pos);
				} else if (args.button==Sys.UI.MouseButton.leftButton){  
					m_measureCoords += (m_measureCoords.length>0 ? "|" : "") + coords.get_x() + ":" + coords.get_y();
				} else 
					return;
				var argument = 'ControldID='+map.get_id()+'&EventArg='+m_currentMeasureToolbarTool+'&coords='+m_measureCoords+'&VectorMode=measure';	
				if (checkForFormElement(document, 0, "MeasureUnits")) argument += "&MeasureUnits=" + document.forms[0].MeasureUnits.value;
				if (checkForFormElement(document, 0, "AreaUnits")) argument += "&AreaUnits=" + document.forms[0].AreaUnits.value;
				if (checkForFormElement(document, 0, "MapUnits")) argument += "&MapUnits=" + document.forms[0].MapUnits.options[document.forms[0].MapUnits.selectedIndex].value;

				var context = this;
				eval(measureVectorCallbackFunctionString);
			} else {
				removeMeasureGraphic();
				if (args.button==Sys.UI.MouseButton.rightButton)
					m_measureCoords = "";
				else if (args.button==Sys.UI.MouseButton.leftButton)
					m_measureCoords = coords.get_x() + ":" + coords.get_y(); 
			}
			m_measureLastCoords = m_measureCoords;
//		} else {
//			window.status = "no coords";
		}
	}
}

function removeMeasureGraphic() {
	if (m_measureGraphicFeature!=null) {
		map.removeGraphic(m_measureGraphicFeature);
		m_measureGraphicFeature.dispose();
		m_measureGraphicFeature = null;
	}

}

// measure tool is selected... call current type (polyline for distance, polygon for area)
function startMeasure() {
	var md;
	if (m_measureDisplay!=null) {
		md = $get(m_measureDisplay);
		m_measureToolbar = $get(m_measureToolbarId);
		m_measureToolbar.style.display = "";
	}
	if (m_currentMeasureToolbarTool=="point") {
		if (md!=null) md.innerHTML = "Click on the map to return the coordinate location of the point.<br />";
		MeasurePoint(map);
	} else if (m_currentMeasureToolbarTool=="polyline") {
		if (md!=null) md.innerHTML = "Click on the map and draw a line. Double-click to end the line.<br />";
		MeasurePolyline(map);
	} else {
		if (md!=null) md.innerHTML = "Click on the map and draw a polygon. Double-click to end the polygon.<br />";
		MeasurePolygon(map);
	}
	if (!m_measureMouseUpSet) {
		map.add_mouseUp(MeasureCoordsMouseUp);
		m_measureMouseUpSet = true;
	}
}
function measureComplete(result,id,area,perimeter,segment, totaldistance) {
	var md = $get(m_measureDisplay);
	if(result) {
		md.innerHTML = result;
	}
	else {
		//just replace values
		var tdperimeter = $get("tdperimiter");
		var tdarea = $get("tdarea");
		var tdsegment = $get("tdsegment");
		var tdtotaldistance = $get("tdtotaldistance");
		
		if(tdarea) { tdarea.innerHTML = area; }
		if(tdperimeter) { tdperimeter.innerHTML = perimeter; }
		if(tdsegment && segment) { tdsegment.innerHTML = segment; }
		if(tdtotaldistance && totaldistance) { tdtotaldistance.innerHTML = totaldistance; }
	}
}
function closeMeasureToolbarTool(id) {
	hideMeasureToolbarTool(id);
	map.cancelGetGeometry();
	map.remove_mouseUp(MeasureCoordsMouseUp); 
	m_measureMouseUpSet = false; 
 }

function hideMeasureToolbarTool(id) {
	m_measureToolbar = $get(m_measureToolbarId);
	if (m_measureToolbar!=null) {
		m_measureToolbar.style.display = "none";
		removeMeasureGraphic();

	}
} 

// update distance unit settings... request new totals from server
function changeMeasureUnits() {
	var f = document.forms[docFormID];
	var i = f.MeasureUnits2.selectedIndex;
	var m = f.MeasureUnits2.options[i].value;
	f.MeasureUnits.value = m; 
	if (coordString==null) coordString="";
	var argument = "ControlID=" + map.get_id() + "&EventArg=" + m_currentMeasureToolbarTool + "&ControlType=Map&coords=" + m_measureLastCoords + "&VectorMode=measure&VectorAction=AddPoint&MeasureUnits=" + m + "&refresh=true";
   if (checkForFormElement(document, 0, "AreaUnits")) {
		argument += "&AreaUnits=" + f.AreaUnits.value ;
   } 
	var context = map.get_id() + "," + m_currentMeasureToolbarTool;

	eval(measureVectorCallbackFunctionString);	
}

// update area unit settings... request new totals from server
function changeAreaUnits() {
	var f = document.forms[docFormID];
	var i = f.AreaUnits2.selectedIndex;
	var a = f.AreaUnits2.options[i].value;
	f.AreaUnits.value = a
	coordString = map.coords;
	if (coordString==null) coordString="";
	var argument = "ControlID=" + map.get_id() + "&EventArg=" + m_currentMeasureToolbarTool + "&ControlType=Map&coords=" + m_measureLastCoords + "&VectorMode=measure&VectorAction=AddPoint&AreaUnits=" + a + "&refresh=true";
   if (checkForFormElement(document, 0, "MeasureUnits")) {
		argument += "&MeasureUnits=" + f.MeasureUnits.value;
   } 
	var context = map.get_id() + "," + m_currentMeasureToolbarTool;

	eval(measureVectorCallbackFunctionString);	
}

// event handler for starting to drag toolbar around... mouse down
function dragMeasureToolbarStart(e) {
	m_measureToolbar = $get("MeasureToolbar");
	if (m_measureToolbar!=null) {
		var box = calcElementPosition(m_measureToolbar.id);
		m_measureXOffset =e.clientX - box.left;
		m_measureYOffset = e.clientY - box.top;
	}
	$addHandler(document, "mousemove", dragMeasureToolbarMove);
	$addHandler(document, "mouseup", dragMeasureToolbarStop);  
	e.preventDefault();
	e.stopPropagation();
}

// event handler for toolbar drag movement... mousemove
function dragMeasureToolbarMove(e) {
	m_measureToolbar.style.left = (e.clientX-m_measureXOffset) + "px";;
	m_measureToolbar.style.top = (e.clientY-m_measureYOffset) + "px";
	e.preventDefault();
	e.stopPropagation();
}

// event handler for end of toolbar drag movement... mouseup
function dragMeasureToolbarStop(e) {
	$removeHandler(document, "mousemove", dragMeasureToolbarMove);
	$removeHandler(document, "mouseup", dragMeasureToolbarStop);  
	e.preventDefault();
	e.stopPropagation();
}

// set up the images for transparency in IE6
function setIE6MeasureToolbarImages() {
	var imageId = "";
	var imgSrc = ""; 
	var imgObj = document.images["MeasureToolbar_CloseButton"];
	if (imgObj!=null) {
		imgObj.src = "images/blank.gif";
		imgObj.style.filter =  "progid:DXImageTransform.Microsoft.AlphaImageLoader(src=/aspnet_client/ESRI/WebADF/images/dismiss.png)";
	}
	for (var i=0; i<m_MeasureTypes.length; i++) {
		imageId = "ToolbarImage_" + m_MeasureTypes[i];
		imgObj = document.images[imageId];
		if (imgObj!=null) {
			imgSrc = imgObj.src;
			imgObj.src = "images/blank.gif";
			imgObj.style.filter =  "progid:DXImageTransform.Microsoft.AlphaImageLoader(src=" + imgSrc + ")";
		}
	}
}