/// <reference path="leaf.ts"/>
namespace Leaf {
    interface StackItem {
        id: string
        , callback: Function
    }
    export class History {
        handlePopState() { }
        constructor() {
            this.handlePopState = this.handlePopState.bind(this)
        }
        private stack: StackItem[] = []
        push(id: string, callback: Function) {
            this.stack.push({ id, callback })
        }
        remove(id: string) {
            this.stack = this.stack.filter(item => item.id != id)
        }
        activate() {
            window.addEventListener("popstate", this.handlePopState)
        }
        deactivate() {
            window.removeEventListener("popstate", this.handlePopState)
        }
    }
}