OMemo是一款轻量级的备忘录应用，可以用来记录未来计划、日常琐事甚至是课程作业等事项以防遗忘。用户可以通过OMemo新建、查看、查找以及删除一条便签，已有便签则会按照建立时间顺序排列在列表中以供查看。总之，OMemo是一个轻巧但功能基本齐全的备忘录，也是每个人日常生活的小帮手。
OMemo基于TIZEN Web Project开发，主要使用了HTML与JavaScript技术，同时引用了jQuery和jQuery Mobile两个JavaScript库。针对用户需求，在App中使用了init、addMemo、loadMemo、displayMemos、deleteMemo等函数作为接口
$(function(){
var OMemo = {};
(function(app){
var $ul = $('#memo-list'),
li = ['<li>',
'<a href="#">',
'<h2>TITLE</h2>',
'<p>CONTENT</p>',
'<p class="ui-li-aside"><strong>TIME</strong></p>',
'<a href="#confirm" data-rel="popup" data-position-to="window" data-transition="pop" class="delete">Delete</a>',
'</li>'].join('');
app.init = function(){
app.bindings();
app.displayMemos();
};
app.bindings = function(){
$('#btnNewMemo').on('click', function(e){
e.preventDefault();
$('#time-new-memo').text("Last modified: "+app.getCurrentTime());
$.mobile.changePage('#new-memo-page');
});
$('#btnCancel').on('click', function(e){
e.preventDefault();
$('#memo-title').val("");
$('#memo-content').val("");
window.history.back();
});
$('#btnSave').on('click', function(e){
e.preventDefault();
app.addMemo(
$('#memo-title').val(),
$('#memo-content').val()
);
});
$('#btnDelete').on('click', function(e){
e.preventDefault();
var title = $('#memo-title-display').val();
app.deleteMemo(title);
});
$('#btnSaveDisplay').on('click', function(e){
e.preventDefault();
app.addMemo(
$('#memo-title-display').val(),
$('#memo-content-display').val()
);
});
$(document).on('click', '#memo-list li', function(e){
e.preventDefault();
var html = $(this)[0].innerHTML;
var title = html.match(/<h2>(.*?)</)[0].replace("<h2>", "").replace("<", "");
app.loadMemo(title);
});
$(document).on('click', '.delete', function(e){
e.preventDefault();
e.stopPropagation();
var html = $(this).parent("li")[0].innerHTML;
var title = html.match(/<h2>(.*?)</)[0].replace("<h2>", "").replace("<", "");
app.deleteMemo(title);
$.mobile.changePage('#main-page');
});
window.addEventListener( 'tizenhwkey', function( ev ) {
if( ev.keyName === "back" ) {
var page = document.getElementsByClassName( 'ui-page-active' )[0],
pageid = page ? page.id : "";
if( pageid === "main-page" ) {
try {
tizen.application.getCurrentApplication().exit();
} catch (ignore) {
}
} else {
window.history.back();
}
}
} );
};
app.loadMemo = function(title){
var memos = app.getMemos(),
times = app.getTimes(),
memo = memos[title],
time = times[title],
$memoTitle = $('#memo-title-display'),
$memoContent = $('#memo-content-display'),
$timeFlag = $('#time-display-memo');
$memoTitle.val(title);
$memoContent.val(memo);
$timeFlag.text("Last modified: "+time);
$.mobile.changePage('#display-memo-page');
};
app.addMemo = function(title, content){
if (title == "" || title.replace(/\s*/g, "").length == 0) {
$('#memo-title').val("");
$('#memo-content').val("");
$.mobile.changePage('#main-page');
return;
}
var memos = localStorage['OMemo'],
times = localStorage['Time'],
memosObj,
timesObj;
if (memos === undefined || memos === '') {
memosObj = {};
} else {
memosObj = JSON.parse(memos);
}
if (times === undefined || times === '') {
timesObj = {};
} else {
timesObj = JSON.parse(times);
}
if (memosObj[title] != undefined) {
if (memosObj[title] != content) {
delete memosObj[title];
} else {
app.displayMemos();
return;
}
};
memosObj[title] = content;
timesObj[title] = app.getCurrentTime();
localStorage['OMemo'] = JSON.stringify(memosObj);
localStorage['Time'] = JSON.stringify(timesObj);
$('#memo-title').val("");
$('#memo-content').val("");
app.displayMemos();
};
app.getMemos = function(){
var memos = localStorage['OMemo'];
return JSON.parse(memos);
};
app.getTimes = function(){
var times = localStorage['Time'];
return JSON.parse(times);
};
app.displayMemos = function(){
var memosObj = app.getMemos(),
timesObj = app.getTimes(),
html = '',
memo,
checkForListDivider = {};
var memoArray = new Array();
for (memo in memosObj) { memoArray.push(memo); }
for (var i = memoArray.length-1; i >= 0; i--) {
var memo = memoArray[i];
var time = timesObj[memo].split("")[0];
if (checkForListDivider[time] != true) {
html += '<li data-role="list-divider">T</li>'.replace(/T/g, time);
checkForListDivider[time] = true;
}
html += li.replace(/TITLE/g, memo.replace(/-/g,' '))
.replace(/CONTENT/g, memosObj[memo])
.replace(/TIME/g, timesObj[memo].replace(time+' ', ""));
}
$ul.html(html).listview('refresh');
$.mobile.changePage('#main-page');
};
app.deleteMemo = function(title) {
var memosObj = app.getMemos(),
timesObj = app.getTimes();
delete memosObj[title];
localStorage['OMemo'] = JSON.stringify(memosObj);
delete timesObj[title];
localStorage['Time'] = JSON.stringify(timesObj);
app.displayMemos();
}
app.getCurrentTime = function () {
var now = new Date();
var year = now.getFullYear();
month = now.getMonth() + 1;
day = now.getDate();
hh = now.getHours();
mm = now.getMinutes();
var time = year + "-";
if(month < 10) time += "0";
time += month + "-";
if(day < 10) time += "0";
time += day + "";
if(hh < 10) time += "0";
time += hh + ":";
if (mm < 10) time += '0';
time += mm;
return(time);
}
app.init();