Add: DBService.js for client

src/game/lib/db_service.js

@@ -0,0 +1,74 @@
+function DBService() {
+	this.path = this.getPath();
+	this.directoryName = this.getDirectoryName(this.path);
+	this.webPath = this.getWebPath(this.directoryName);
+
+	this.maestroID = 0;
+	this.playerID = 0;
+	this.appName = "";
+	this.dateAndTime = null;
+}
+
+DBService.prototype.getPath = function() {
+	return window.location.pathname;
+}
+
+DBService.prototype.getDirectoryName = function(path) {
+	var pathAndFileNames = path.split("/");
+	return pathAndFileNames[pathAndFileNames.length - 2];
+}
+
+DBService.prototype.getWebPath = function(directoryName) {
+	if(directoryName === "test")	// mouse_typing/test/
+		return "../src/web/";
+	else	// mousetyping/src/web/client/
+		return "../";
+}
+
+
+DBService.prototype.setMaestroID = function(maestroID) {
+	this.maestroID = maestroID;
+}
+
+DBService.prototype.setPlayerID = function(playerID) {
+	this.playerID = playerID;
+}
+
+DBService.prototype.setAppName = function(appName) {
+	this.appName = appName;
+}
+
+DBService.prototype.setDateTime = function(date, time) {
+	this.dateAndTime = date + time;
+}
+
+DBService.prototype.resetDateTime = function() {
+	this.dateAndTime = null;
+}
+
+
+
+DBService.prototype.makeXhr = function(filepath, onreadystatechange) {
+	var xhr = new XMLHttpRequest();
+	xhr.open("POST", this.webPath + filepath, true);
+	xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
+	xhr.onreadystatechange = onreadystatechange;
+	return xhr;
+}
+
+DBService.prototype.requestWritingPlayerList = function(onSucceededListener, onFailedListener) {
+	var xhr = this.makeXhr(
+		"php/writing/player_list.php",
+		(function() {	// onreadystatechange
+			if(xhr.readyState == 4 && xhr.status == 200) {
+				var replyJSON = JSON.parse(xhr.responseText);
+
+				if(replyJSON != null)
+					onSucceededListener(replyJSON);
+				else
+					onFailedListener(replyJSON);
+			}
+		}).bind(this)
+	);
+	xhr.send("maestroID=" + this.maestroID + "&playerID=" + this.playerID);
+}