VersaWhiteboard/s_whiteboard.js
2020-03-24 15:46:02 +01:00

43 lines
2.1 KiB
JavaScript

//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 (["line", "pen", "rect", "circle", "eraser", "addImgBG", "recSelect", "eraseRec", "addTextBox", "setTextboxText", "removeTextbox", "setTextboxPosition", "setTextboxFontSize", "setTextboxFontColor"].includes(tool)) { //Save all this actions
if (!savedBoards[wid]) {
savedBoards[wid] = [];
}
delete content["wid"]; //Delete id from content so we don't store it twice
if (tool === "setTextboxText") {
for (var i = savedBoards[wid].length - 1; i >= 0; i--) { //Remove old textbox tex -> dont store it twice
if (savedBoards[wid][i]["t"] === "setTextboxText" && savedBoards[wid][i]["d"][0] === content["d"][0]) {
savedBoards[wid].splice(i, 1);
}
}
}
savedBoards[wid].push(content);
}
},
loadStoredData: function (wid) { //Load saved whiteboard
return savedBoards[wid] ? savedBoards[wid] : [];
}
}