只在新回答完成时隐藏或移除历史消息，支持渐隐效果、自定义保留条数和模式切换，自动避开右上角元素，优化性能。
// ==UserScript==
// @name ChatGPT 历史消息管理增强脚本（v2.1）
// @namespace http://tampermonkey.net/
// @version 2.1
// @description 只在新回答完成时隐藏或移除历史消息，支持渐隐效果、自定义保留条数和模式切换，自动避开右上角元素，优化性能。
// @author Assumine
// @match https://chatgpt.com/*
// @grant none
// ==/UserScript==
(function() {
'use strict';
let hidden = false;
let keepCount = 10;
let mode = 'hide'; // 'hide' 或 'remove'
const originalArticles = new WeakMap();
let lastAnswerId = null;
let lastContentLength = 0;
let stableCounter = 0;
const STABLE_THRESHOLD = 10; // 稳定次数，100ms × 10 = 1秒
function updateArticles() {
const articles = Array.from(document.querySelectorAll('article'));
if (articles.length <= keepCount) return;
const numHidden = articles.length - keepCount;
if (hidden) {
if (mode === 'remove') {
articles.slice(0, numHidden).forEach(a => {
if (!originalArticles.has(a)) {
originalArticles.set(a, a.parentNode);
a.remove();
}
});
return;
}
const fadeCount = Math.min(5, numHidden);
articles.slice(0, numHidden - fadeCount).forEach(a => a.style.display = 'none');
const fadedArticles = articles.slice(numHidden - fadeCount, numHidden);
fadedArticles.forEach((a, i) => {
const opacity = 0.2 + (i / fadeCount) * 0.4;
a.style.display = 'block';
a.style.opacity = opacity;
a.style.overflow = 'hidden';
a.style.maxHeight = 'calc(1.5em * 5)';
a.style.transition = 'opacity 0.3s';
});
articles.slice(numHidden).forEach(a => {
a.style.display = 'block';
a.style.opacity = '1';
a.style.overflow = '';
a.style.maxHeight = '';
});
} else {
articles.forEach(a => {
a.style.display = 'block';
a.style.opacity = '1';
a.style.overflow = '';
a.style.maxHeight = '';
});
if (mode === 'remove') {
originalArticles.forEach((parent, el) => {
if (!document.body.contains(el)) {
parent.appendChild(el);
}
});
originalArticles.clear();
}
}
}
function getRightOffset() {
const block = document.querySelector('.top-right-block-selector'); // 替换为实际选择器
if (block) {
const rect = block.getBoundingClientRect();
return rect.width + 16; // 留 16px 间距
}
return 10; // 默认偏移
}
function createControlPanel() {
if (document.getElementById('historyControlPanel')) return;
const panel = document.createElement('div');
panel.id = 'historyControlPanel';
panel.style.position = 'fixed';
panel.style.top = '10px';
panel.style.right = getRightOffset() + 'px';
panel.style.zIndex = '9999';
panel.style.background = '#10a37f';
panel.style.padding = '6px 12px';
panel.style.borderRadius = '6px';
panel.style.display = 'flex';
panel.style.alignItems = 'center';
panel.style.gap = '6px';
const toggleBtn = document.createElement('button');
toggleBtn.innerText = '隐藏历史';
toggleBtn.style.padding = '4px 8px';
toggleBtn.style.border = 'none';
toggleBtn.style.borderRadius = '4px';
toggleBtn.style.cursor = 'pointer';
toggleBtn.style.fontSize = '14px';
toggleBtn.style.background = '#fff';
toggleBtn.style.color = '#10a37f';
toggleBtn.addEventListener('click', () => {
hidden = !hidden;
toggleBtn.innerText = hidden ? '取消隐藏' : '隐藏历史';
updateArticles();
});
const input = document.createElement('input');
input.type = 'number';
input.min = '1';
input.value = keepCount;
input.style.width = '60px';
input.style.borderRadius = '4px';
input.style.border = 'none';
input.style.textAlign = 'center';
input.addEventListener('change', () => {
const val = parseInt(input.value);
if (val > 0) {
keepCount = val;
updateArticles();
}
});
const label = document.createElement('span');
label.innerText = '保留消息数';
label.style.color = '#fff';
label.style.fontSize = '14px';
const modeBtn = document.createElement('button');
modeBtn.innerText = '模式:隐藏';
modeBtn.style.padding = '4px 8px';
modeBtn.style.border = 'none';
modeBtn.style.borderRadius = '4px';
modeBtn.style.cursor = 'pointer';
modeBtn.style.fontSize = '14px';
modeBtn.style.background = '#fff';
modeBtn.style.color = '#10a37f';
modeBtn.addEventListener('click', () => {
mode = mode === 'hide' ? 'remove' : 'hide';
modeBtn.innerText = mode === 'hide' ? '模式:隐藏' : '模式:移除';
updateArticles();
});
panel.appendChild(toggleBtn);
panel.appendChild(label);
panel.appendChild(input);
panel.appendChild(modeBtn);
document.body.appendChild(panel);
}
function checkAnswerCompletion() {
const chatContainer = document.querySelector('main');
if (!chatContainer) return;
const articles = chatContainer.querySelectorAll('article');
if (articles.length === 0) return;
const lastArticle = articles[articles.length - 1];
const isAssistant = lastArticle.querySelector('[data-message-author-role="assistant"]');
if (!isAssistant) return;
const currentText = lastArticle.innerText.trim();
const currentLength = currentText.length;
const currentId = lastArticle.getAttribute('data-message-id') || lastArticle.innerHTML.slice(0,50);
if (currentId !== lastAnswerId) {
lastAnswerId = currentId;
lastContentLength = 0;
stableCounter = 0;
}
if (currentLength > lastContentLength + 5) {
lastContentLength = currentLength;
stableCounter = 0;
} else if (currentLength === lastContentLength) {
stableCounter++;
if (stableCounter >= STABLE_THRESHOLD) {
updateArticles();
stableCounter = 0;
}
}
}
const initInterval = setInterval(() => {
const container = document.querySelector('main') || document.body;
if (container) {
clearInterval(initInterval);
createControlPanel();
updateArticles();
setInterval(checkAnswerCompletion, 100);
}
}, 500);
})();