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index.js
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index.js
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/**
* @huntbao
* */
// 名字名字模块
var app = {
util: {},
store: {}
};
// 工具方法模块
app.util = {
$: function (selector, node) {
return (node || document).querySelector(selector);
},
formatTime: function (ms) {
var d = new Date(ms);
var pad = function (s) {
if (s.toString().length === 1) {
s = '0' + s;
}
return s;
}
var year = d.getFullYear();
var month = d.getMonth() + 1;
var date = d.getDate();
var hour = d.getHours();
var minute = d.getMinutes();
var second = d.getSeconds();
return year + '-' + pad(month) + '-' + pad(date) + ' ' + pad(hour) + ':' + pad(minute) + ':' + pad(second);
}
};
// store 模块
app.store = {
__store_key: '__sticky_note__',
get: function (id) {
var notes = this.getNotes();
return notes[id] || {};
},
set: function (id, content) {
var notes = this.getNotes();
if (notes[id]) {
Object.assign(notes[id], content);
} else {
notes[id] = content;
}
localStorage[this.__store_key] = JSON.stringify(notes);
console.log('saved note: id: ' + id + ' content: ' + JSON.stringify(notes[id]));
},
remove: function (id) {
var notes = this.getNotes();
delete notes[id];
localStorage[this.__store_key] = JSON.stringify(notes);
},
getNotes: function () {
return JSON.parse(localStorage[this.__store_key] || '{}');
}
};
(function (util, store) {
var $ = util.$;
var movedNote = null;
var startX;
var startY;
var maxZIndex = 0;
var noteTpl = `
<i class="u-close"></i>
<div class="u-editor" contenteditable="true"></div>
<div class="u-timestamp">
<span>更新: </span>
<span class="time"></span>
</div>
`;
function Note(options) {
var note = document.createElement('div');
note.className = 'm-note';
note.id = options.id || 'm-note-' + Date.now();
note.innerHTML = noteTpl;
$('.u-editor', note).innerHTML = options.content || '';
note.style.left = options.left + 'px';
note.style.top = options.top + 'px';
note.style.zIndex = options.zIndex;
document.body.appendChild(note);
this.note = note;
this.updateTime(options.updateTime);
this.addEvent();
}
Note.prototype.updateTime = function (ms) {
var ts = $('.time', this.note);
ms = ms || Date.now();
ts.innerHTML = util.formatTime(ms);
this.updateTimeInMS = ms;
}
Note.prototype.save = function () {
store.set(this.note.id, {
left: this.note.offsetLeft,
top: this.note.offsetTop,
zIndex: parseInt(this.note.style.zIndex),
content: $('.u-editor', this.note).innerHTML,
updateTime: this.updateTimeInMS
});
}
Note.prototype.close = function (e) {
console.log('close note')
document.body.removeChild(this.note);
}
Note.prototype.addEvent = function () {
// 便笺的 mousedown 事件
var mousedownHandler = function (e) {
movedNote = this.note;
startX = e.clientX - this.note.offsetLeft;
startY = e.clientY - this.note.offsetTop;
if (parseInt(this.note.style.zIndex) !== maxZIndex - 1) {
this.note.style.zIndex = maxZIndex++;
store.set(this.note.id, {
zIndex: maxZIndex - 1
});
}
}.bind(this);
this.note.addEventListener('mousedown', mousedownHandler);
// 便笺的输入事件
var editor = $('.u-editor', this.note);
var inputTimer;
var inputHandler = function (e) {
var content = editor.innerHTML;
clearTimeout(inputTimer);
inputTimer = setTimeout(function () {
var time = Date.now();
store.set(this.note.id, {
content: content,
updateTime: time
});
this.updateTime(time);
}.bind(this), 300);
}.bind(this);
editor.addEventListener('input', inputHandler);
// 关闭处理程序
var closeBtn = $('.u-close', this.note);
var closeHandler = function (e) {
store.remove(this.note.id);
this.close(e);
closeBtn.removeEventListener('click', closeHandler);
this.note.removeEventListener('mousedown', mousedownHandler);
}.bind(this);
closeBtn.addEventListener('click', closeHandler);
}
document.addEventListener('DOMContentLoaded', function (e) {
// 创建按钮事件
$('#create').addEventListener('click', function (e) {
var note = new Note({
left: Math.round(Math.random() * (window.innerWidth - 220)),
top: Math.round(Math.random() * (window.innerHeight - 320)),
zIndex: maxZIndex++
});
note.save();
});
// 移动监听
function mousemoveHandler(e) {
// console.log(e)
if (!movedNote) {
return;
}
movedNote.style.left = e.clientX - startX + 'px';
movedNote.style.top = e.clientY - startY + 'px';
}
function mouseupHandler(e) {
if (!movedNote) {
return;
}
store.set(movedNote.id, {
left: movedNote.offsetLeft,
top: movedNote.offsetTop
});
movedNote = null;
}
document.addEventListener('mousemove', mousemoveHandler);
document.addEventListener('mouseup', mouseupHandler);
// 初始化 notes
var notes = store.getNotes();
Object.keys(notes).forEach(function (id) {
var options = notes[id];
if (maxZIndex < options.zIndex) {
maxZIndex = options.zIndex;
}
new Note(Object.assign(options, {
id: id
}));
});
maxZIndex += 1;
});
})(app.util, app.store);