notehub/resources/public/js/main.js

var hash = function (input) {
    var shortMod = function(i) { return i % 32767 };
    var charCodes = input.split("")
        .filter(function(c){ return c != "\n" && c != "\r" })
        .map(function(c){ return c.charCodeAt(0) });
    var h = 0;
    for(var i in charCodes)
        h = shortMod(h + shortMod(charCodes[i] * (h % 2 != 0 ? 16381 ^ i : 16381 & i)));
    return h;
}

var $ = function(id){ return document.getElementById(id); }
var iosDetected = navigator.userAgent.match("(iPad|iPod|iPhone)");
var timer = null;
var timerDelay = iosDetected ? 800 : 400;
var show = function(elem) { elem.style.display = "block" }
var $draft, $action, $preview, $password, $plain_password, $input_elems, $dashed_line, updatePreview;

var md5 = hex_md5;

function md2html(input){
    return marked(input);
}

function loadPage() {
    $draft = $("draft");
    $action = $("action");
    $preview = $("preview");
    $password = $("password");
    $plain_password = $("plain-password");
    $input_elems = $("input-elems");
    $dashed_line = $("dashed-line");
    updatePreview = function(){
        clearTimeout(timer);
        var content = $draft.value;
        var delay = Math.min(timerDelay, timerDelay * (content.length / 400));
        timer = setTimeout(function(){
            show($dashed_line);
            show($input_elems);
            $preview.innerHTML = md2html(content);
        }, delay);
    };
    if($action){
        if($action.value == "update") updatePreview(); else $draft.value = "";
        $draft.onkeyup = updatePreview;
        $("publish-button").onclick = function(e) {
            if($plain_password.value != "") $password.value = md5($plain_password.value);
            $plain_password.value = null;
            $("session-value").value = hash($draft.value + $("session-key").value);
        }
        if(iosDetected) $draft.className += " ui-border"; else $draft.focus();
    }

    var mdDocs = document.getElementsByClassName("markdown");
    for(var i = 0; i < mdDocs.length; i++){
        mdDocs[i].innerHTML = md2html(mdDocs[i].innerHTML);
        show(mdDocs[i]);
    }
}