StockSearch_Basic/Aircraft_HW4.html at master · reshma93/StockSearch_Basic · GitHub

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<html>
	<head>
		<title>View Aircraft</title>
	<!--
		<BODY>
		This is for USC disclaimer
		</BODY>
	-->

	<script>
	function generateHTML(JsonDoc)
	{
		try{
			var json=JSON.parse(JsonDoc);
		}
		catch(e)
		{
			alert("Text in file can't be parsed to Json!");
			status_1=1;
			return;
		}
		html_text="<html><head><title>JSON Parse Result</title></head><body>";

		try{
			var NoOfRows= json.Mainline.Table.Row.length;
		}
		catch(err)
		{
			//html_text+="Error!!!"
		}
		if(NoOfRows>0)
		{
				html_text+="<table border='2'>"
				html_text+="<tr>"
				var headers = Object.values(json.Mainline.Table.Header.Data)
				var len= headers.length;
				for(i=0; i<len; i++)
				{
					//var temp=json.Mainline.Table.Header.Data[i];
					html_text+="<th>"+headers[i]+"</th>"
					//document.write(temp);
					//document.write("</br>");
				}
				html_text+="</tr>";
				//document.write(NoOfRows);

				for(j=0; j<NoOfRows; j++)
				{
					row=json.Mainline.Table.Row[j];

					var emptyRow= Object.keys(row).length === 0 && row.constructor === Object

					if(!emptyRow)
					{
					//emptyCell=0;

					/*for(z=0; z<len; z++)
					{
						if(row[headers[z]]=="")
						{
							emptyCell=emptyCell+1;
						}
						else if(row[headers[z]].Hub==""  || Object.keys(row[headers[z]]).length === 0 && row[headers[z]].constructor === Object)
						{
							emptyCell=emptyCell+1;
						}
						else{
							break;
						}
					}*/
					//if(emptyCell!=len)
					//{
						html_text+="<tr>"
						//var Airline= json.Mainline.Table.Row[j].headers[0];
						//html_text+="<td>"+Airline+"</td>"
						html_text+="<td>"+row[headers[0]]+"</td>"
						//document.write(Airline);
						//document.write("</br>");

						//var IATA= json.Mainline.Table.Row[j].headers[1];
						//html_text+="<td>"+IATA+"</td>"
						html_text+="<td>"+row[headers[1]]+"</td>"
						//document.write(IATA);
						//document.write("</br>");

						//var NoOfHubs = json.Mainline.Table.Row[j].headers[2].Hub.length;
						try{
							var NoOfHubs= row[headers[2]].Hub.length
						}
						catch(err)
						{
						}
						html_text+="<td>"
						if(NoOfHubs>0)
						{
							if(!(Object.keys(row[headers[2]]).length === 0 && row[headers[2]].constructor))
							{
								for(k=0; k<NoOfHubs; k++)
								{
									//if(row[headers[2]].Hub[k]!="")
									//{

										html_text+="<ul>"
										if(k==0)
										{
											html_text+="<li style=\"font-weight:bold\">"+row[headers[2]].Hub[k]+"</li>"
										}
										else
										{
											html_text+="<li>"+row[headers[2]].Hub[k]+"</li>"
										}
										//html_text+="<li>"+json.Mainline.Table.Row[j].Hubs.Hub[k]+"</li>"
										html_text+="</ul>"
										//document.write(json.Mainline.Table.Row[j].Hubs.Hub[k]);
										//document.write("</br>");
									//}
								}
							}
						}
						html_text+="</td>"

						html_text+="<td>"+row[headers[3]]+"</td>"

						//var HomePage= json.Mainline.Table.Row[j].headers[4];
						//html_text+="<td><a href="+HomePage+">"+HomePage+"</a>"+"</td>"
						html_text+="<td><a href="+row[headers[4]]+">"+row[headers[4]]+"</a>"+"</td>"
						//document.write(HomePage);
						//document.write("</br>");

						//var Plane= json.Mainline.Table.Row[j].headers[5];
						//html_text+="<td><img src="+Plane+" height=300 width=300/></td>"
						html_text+="<td><img src="+row[headers[5]]+" alt=\"No Image\" height=300 width=300/></td>"
						//document.write(Plane);
						//document.write("</br>");
						html_text+="</tr>"
					//}
					}
				}

				html_text+="</table>"
				status_1=0;
		}
		else{

			//self.close();
			alert("Sorry! Json contains no rows");
			//html_text+="<h3>Sorry! Json contains no rows</h3>"
			status_1=1;

		}

		html_text+="</body></html>";

		//var temp1 = json["Mainline"];
		//document.write(temp1);
		//document.write("break");
		//document.write(json);
	}

	function viewJSON(url)
	{
		var URL = url.URL.value;
		if(URL=="")
		{
			alert("Please enter JSON filename!");
			return false;
		}
		else
		{
			//var URL = url.URL.value;

			var status=fileExists(URL)
			if (!URL.match(".json$", "i")) {
				alert("Only JSON files allowed!");
				return;
			}

			//document.write(URL);
			function loadJSON(URL) {
				//document.write("In function");
				if (window.XMLHttpRequest)
				{// code for IE7+, Firefox, Chrome, Opera, Safari
					//document.write("Object Creation");
					var xmlhttp=new XMLHttpRequest();
					xmlhttp.overrideMimeType("application/json");
					//document.write("Created");
				}
				else
				{// code for IE6, IE5
					xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
				}
				//document.write(" Before Open called");
				xmlhttp.open("GET",URL,false);
				//document.write("Open called");
				//xmlhttp.responseType="json";
				//document.write("Before send");
				xmlhttp.send();
				//document.write("After send");
				var JsonDoc=xmlhttp.responseText;
				//JSON.parse(xml.responseText) xmlhttp.response
				//document.write("function called");
				//document.write(JsonDoc);
				return JsonDoc;
			}

			if(status)
			{
				JsonDoc = loadJSON(URL);
				//document.write("before if");
					 if (window.ActiveXObject) //if IE, simply execute script (due to async prop).
					 {
						if (JsonDoc.parseError.errorCode != 0)
						{
							var myErr = JsonDoc.parseError;
							generateError(JsonDoc);
							hWin = window.open("", "Error", "height=300,width=340");
							hWin.document.write(html_text);
						}
						else
						{  		//generateHTML(JsonDoc);
								//document.write("Before opening window")
								hWin = window.open("", "Assignment4", "height=800,width=600");
								hWin.document.write(html_text);
						}
					}
					else //else if FF, execute script once XML object has loaded
					{
						//document.write("in else");
						JsonDoc.onload=generateHTML(JsonDoc);
						if(status_1!=1)
						{
							hWin = window.open("", "Assignment4", "height=800,width=1200");
							hWin.document.write(html_text);
						}
						status_1=0;
					}
					 //hWin.document.close();
			}
			else{
				alert("Sorry! The JSON file doesn't exist.");
			}

		}
	}

	function fileExists(url)
	{
		var http = new XMLHttpRequest();
		http.open('HEAD', url, false);
		http.send();
		return http.status!=404;
	}
	</script>

	</head>
	<body>
		<span style="text-align:center;">
		<br/>
		<h2>Enter URL for Airlines List JSON File</h2>

		<br/>
		<form name="myform" method="POST" id="location">
			<input type="text" name="URL" maxlength="255" size="100" value="airlinelist.json" />
			<br/><br/>
			<input type="button" name="submit" value="Submit Query" onClick="viewJSON(this.form)" />
		</form>
		</span>

	</body>
</html>