https://www.high-endrolex.com/28
/**
* Wise Chat messages history utility.
* It uses Local Storage to store and retrieve historical chat messages typed by the current user.
*
* @author Marcin Ławrowski
* @link http://kaine.pl/projects/wp-plugins/wise-chat
*/
function WiseChatMessagesHistory() {
var LOCAL_STORAGE_KEY_MESSAGES_KEY = "WiseChatMessagesStack";
var pointer = -1;
var size = 50;
this.getPointer = function() {
return pointer;
};
this.resetPointer = function() {
pointer = -1;
};
this.getCurrentSize = function() {
var stack = getStack();
if (stack !== null) {
return stack.length;
}
return 0;
};
this.addMessage = function(message) {
var stack = getStack();
if (stack == null || typeof(stack) === "undefined") {
stack = new Array();
}
if (stack.length >= size) {
stack.shift();
}
stack.push(message);
setStack(stack);
};
this.getPreviousMessage = function() {
var stack = getStack();
if (stack != null) {
if (pointer < size - 1 && pointer < this.getCurrentSize() - 1) {
pointer++;
}
var message = stack[(stack.length - 1) - pointer];
return message;
}
return null;
};
this.getNextMessage = function() {
var stack = getStack();
if (stack != null) {
if (pointer > 0) {
pointer--;
}
var message = stack[(stack.length - 1) - pointer];
return message;
}
return null;
};
function getStack() {
if (typeof(Storage) !== "undefined") {
var stack = window.localStorage.getItem(LOCAL_STORAGE_KEY_MESSAGES_KEY);
if (stack != null) {
return JSON.parse(stack);
}
}
return null;
};
function setStack(stack) {
if (typeof(Storage) !== "undefined") {
window.localStorage.setItem(LOCAL_STORAGE_KEY_MESSAGES_KEY, JSON.stringify(stack));
}
};
};