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在网页中添加一个记事本功能
// ==UserScript==
// @name 网页内记事本(In-page notepad)
// @namespace http://your.namespace/
// @version 1.0
// @description 在网页中添加一个记事本功能
// @author 雷明闪(melonTMD）
// @license MIT
// @match http://*/*
// @match https://*/*
// @grant GM_download
// @grant GM_setClipboard
// ==/UserScript==
(function() {
'use strict';
let isResizing = false;
let isDragging = false;
let prevX;
let prevY;
// 创建记事本容器
const noteContainer = document.createElement('div');
noteContainer.id = 'note-container';
noteContainer.style.position = 'fixed';
noteContainer.style.top = '50px'; // 初始位置
noteContainer.style.left = '50px'; // 初始位置
noteContainer.style.width = '300px'; // 初始宽度
noteContainer.style.height = '300px'; // 初始高度
noteContainer.style.border = '1px solid #ccc';
noteContainer.style.backgroundColor = '#fff';
noteContainer.style.zIndex = '9999';
noteContainer.style.overflow = 'hidden';
noteContainer.style.resize = 'both'; // 启用调整大小
noteContainer.style.cursor = 'default';
noteContainer.style.display = 'none'; // 初始隐藏
// 创建记事本文本框
const noteTextarea = document.createElement('textarea');
noteTextarea.id = 'note';
noteTextarea.placeholder = '在这里写下你的笔记...';
noteTextarea.style.width = '100%';
noteTextarea.style.height = 'calc(100% - 30px)';
noteTextarea.style.border = 'none';
noteTextarea.style.padding = '10px';
noteTextarea.style.resize = 'none';
noteTextarea.style.overflow = 'auto';
// 创建标题栏
const titleBar = document.createElement('div');
titleBar.style.width = '100%';
titleBar.style.height = '30px';
titleBar.style.backgroundColor = '#ccc';
titleBar.style.cursor = 'move';
titleBar.style.userSelect = 'none';
// 添加标题栏到记事本容器
noteContainer.appendChild(titleBar);
// 添加记事本文本框到记事本容器
noteContainer.appendChild(noteTextarea);
// 添加记事本容器到页面
document.body.appendChild(noteContainer);
// 当点击标题栏时开始拖动
titleBar.addEventListener('mousedown', function(e) {
isDragging = true;
prevX = e.clientX;
prevY = e.clientY;
});
// 当调整记事本大小时
noteContainer.addEventListener('mousedown', function(e) {
if (e.target === noteContainer) {
isResizing = true;
prevX = e.clientX;
prevY = e.clientY;
}
});
// 当鼠标移动时进行拖动和调整大小
document.addEventListener('mousemove', function(e) {
if (isDragging) {
const newX = noteContainer.offsetLeft + e.clientX - prevX;
const newY = noteContainer.offsetTop + e.clientY - prevY;
noteContainer.style.left = newX + 'px';
noteContainer.style.top = newY + 'px';
prevX = e.clientX;
prevY = e.clientY;
} else if (isResizing) {
const newWidth = noteContainer.offsetWidth + e.clientX - prevX;
const newHeight = noteContainer.offsetHeight + e.clientY - prevY;
noteContainer.style.width = newWidth + 'px';
noteContainer.style.height = newHeight + 'px';
prevX = e.clientX;
prevY = e.clientY;
}
});
// 当鼠标释放时停止拖动和调整大小
document.addEventListener('mouseup', function() {
isDragging = false;
isResizing = false;
});
// 检查本地存储中是否已经保存了笔记
if (localStorage.getItem('note')) {
noteTextarea.value = localStorage.getItem('note');
}
// 当点击保存按钮时
function saveNote() {
// 获取文本框中的内容
const note = noteTextarea.value;
// 将内容保存到本地存储中
localStorage.setItem('note', note);
// 提示用户保存成功
alert('笔记已保存！');
}
// 创建文件按钮
const fileButton = document.createElement('button');
fileButton.innerHTML = '文件';
fileButton.style.position = 'absolute';
fileButton.style.top = '5px';
fileButton.style.left = '5px';
fileButton.style.padding = '5px';
fileButton.style.backgroundColor = '#f0f0f0';
fileButton.style.border = 'none';
fileButton.style.cursor = 'pointer';
// 创建文件下拉菜单
const fileMenu = document.createElement('div');
fileMenu.style.position = 'absolute';
fileMenu.style.top = '30px';
fileMenu.style.left = '0';
fileMenu.style.width = '100px';
fileMenu.style.backgroundColor = '#fff';
fileMenu.style.border = '1px solid #ccc';
fileMenu.style.display = 'none'; // 初始隐藏
// 创建文件菜单选项
const clearOption = document.createElement('div');
clearOption.textContent = '清除窗口内容';
clearOption.style.padding = '5px';
clearOption.style.cursor = 'pointer';
const saveOption = document.createElement('div');
saveOption.textContent = '保存';
saveOption.style.padding = '5px';
saveOption.style.cursor = 'pointer';
const saveAsTxtOption = document.createElement('div');
saveAsTxtOption.textContent = '保存为txt文件';
saveAsTxtOption.style.padding = '5px';
saveAsTxtOption.style.cursor = 'pointer';
// 将文件菜单选项添加到文件下拉菜单
fileMenu.appendChild(clearOption);
fileMenu.appendChild(saveOption);
fileMenu.appendChild(saveAsTxtOption);
// 将文件按钮和文件下拉菜单添加到记事本容器
noteContainer.appendChild(fileButton);
noteContainer.appendChild(fileMenu);
// 当鼠标悬停在文件按钮上时改变颜色
fileButton.addEventListener('mouseenter', function() {
fileButton.style.backgroundColor = '#e0e0e0';
});
// 当鼠标移出文件按钮时恢复颜色
fileButton.addEventListener('mouseleave', function() {
fileButton.style.backgroundColor = '#f0f0f0';
});
// 当点击文件按钮时显示或隐藏文件下拉菜单
fileButton.addEventListener('click', function() {
if (fileMenu.style.display === 'none') {
fileMenu.style.display = 'block';
} else {
fileMenu.style.display = 'none';
}
});
// 当选择文件菜单中的选项时
fileMenu.addEventListener('click', function(event) {
const selectedOption = event.target.textContent;
if (selectedOption === '清除窗口内容') {
noteTextarea.value = '';
} else if (selectedOption === '保存') {
saveNote();
} else if (selectedOption === '保存为txt文件') {
const note = noteTextarea.value;
const noteWithNewLines = note.replace(/\n/g, '\r\n'); // 将换行符 \n 替换为 \r\n
const blob = new Blob([noteWithNewLines], { type: 'text/plain' });
const url = URL.createObjectURL(blob);
GM_download({
url: url,
name: 'note.txt'
});
}
// 隐藏文件下拉菜单
fileMenu.style.display = 'none';
});
// 创建关闭按钮
const closeButton = document.createElement('button');
closeButton.innerHTML = '✖';
closeButton.style.position = 'absolute';
closeButton.style.top = '1px';
closeButton.style.right = '1px';
closeButton.style.padding = '5px 10px';
closeButton.style.backgroundColor = '#f44336';
closeButton.style.color = 'white';
closeButton.style.border = 'none';
closeButton.style.cursor = 'pointer';
// 添加关闭按钮到记事本容器
noteContainer.appendChild(closeButton);
// 当点击关闭按钮时
closeButton.addEventListener('click', function() {
noteContainer.style.display = 'none';
});
// 监听键盘事件
document.addEventListener('keydown', function(event) {
if (event.ctrlKey && event.altKey && event.key === 'n') {
if (noteContainer.style.display === 'none') {
noteContainer.style.display = 'block';
} else {
noteContainer.style.display = 'none';
}
}
});
})();