basic whiteboard with no btns

s_whiteboard.js

@@ -0,0 +1,39 @@
+//This file is only for saving the whiteboard. (Not to a file, only to RAM atm. Whiteboard is gone after server restart)
+
+var savedBoards = {};
+module.exports = {
+	handleEventsAndData : function(content) {
+		var tool = content["t"]; //Tool witch is used
+		var wid = content["wid"]; //whiteboard ID
+		var username = content["username"];
+		if(tool==="clear") { //Clear the whiteboard
+			delete savedBoards[wid];
+		} else if(tool==="undo") { //Undo an action
+			if(savedBoards[wid]) {
+				for(var i=savedBoards[wid].length-1;i>=0;i--){
+					if(savedBoards[wid][i]["username"]==username) {
+						var drawId = savedBoards[wid][i]["drawId"];
+						for(var i=savedBoards[wid].length-1;i>=0;i--){
+							if(savedBoards[wid][i]["drawId"]==drawId && savedBoards[wid][i]["username"]==username) {
+								savedBoards[wid].splice(i, 1);
+							}
+						}
+						break;
+					}
+				}
+			}
+		} else if(tool==="line" || tool==="pen" || tool==="rect" || tool==="circle" || tool==="eraser" || tool==="addImgBG" || tool==="recSelect" || tool==="eraseRec") { //Save all this actions
+			if(!savedBoards[wid]) {
+				savedBoards[wid] = [];
+			}
+			delete content["wid"]; //Delete id from content so we don't store it twice
+			savedBoards[wid].push(content);
+		}
+	},
+	loadStoredData : function(wid) { //Load saved whiteboard
+		if(!savedBoards[wid]) {
+			return [];
+		}
+		return savedBoards[wid];
+	}
+}