the-obelisk/app/Controls/Classes/StoredMemory.ts

/**
 * This is used to store and retrieve values to/from Data Storage.
 * The value used in the constructor is merely the Default value. It is safe to assume that the correct value will be loaded immediately.
 * WARNING: IF YOU CHANGE THE TYPE OF VALUE A MEMORY STORES, YOU ALSO NEED A NEW ID. OR CHECKS. NEW ID IS EASIER.
 * Optionally: use listeners if you have to change value on the fly.
 */
/// <reference path="../Modules/Memory.ts" />
class StoredMemory<T> {
    private id : string;
    private value : T;
    private listeners : Array<Function> = [];

    public constructor (id : string, value : T) {
        this.id = id;
        this.value = value;
        Controls.Memory.registerMemory (this);
    }

    /**
     * For use exclusively by Controls.Memory. Do not invoke. Use storeValue instead.
     * @param {T} value
     */
    public setValueFromLocalStorageDoNotInvoke (value : T) {
        this.value = value;
    }

    public storeValue (value : T) {
        if (JSON.stringify(value) !== JSON.stringify(this.value)) {
            this.value = value;
            this.triggerListeners();
        }
    }

    public getValue () {
        return this.value;
    }

    public getId () {
        return this.id;
    }

    public addListener (listener : Function) {
        this.listeners.push(listener);
    }

    public triggerListeners () {
        for (var i = 0; i < this.listeners.length; i++) {
            this.listeners[i](this);
        }
    }
}