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fix(AgentIO): 滚底改同步——后台tab不触发rAF导致流式更新时不滚

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yumoqing 2026-09-01 18:11:22 +08:00
parent 89917d4328
commit 26aad5712a
1 changed files with 10 additions and 14 deletions
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24
bricks/agent.js
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@ -332,21 +332,17 @@ bricks.AgentIO = class extends bricks.VBox {
}
// 会话区保持最后输出可见（2026-09-01）：内容超出显示范围时自动滚到底。
// 仅当用户本就停在底部附近才跟滚——用户主动上翻看历史时不强行拉回；
// 滚回底部或发送新消息后恢复跟滚。rAF 延迟到本帧布局完成后滚，
// 保证 scrollHeight 已是新内容的尺寸（同步滚会拿到旧高度）。
// 滚回底部或发送新消息后恢复跟滚。
// 同步滚：读 scrollHeight 本身强制布局，拿到的是新内容尺寸；
// 不用 rAF（后台 tab 不触发 rAF，流式更新时不滚）。
scroll_to_bottom(){
if (this._scroll_pending) return;
this._scroll_pending = true;
requestAnimationFrame(function(){
this._scroll_pending = false;
var e = this.msg_box && this.msg_box.dom_element;
if (!e) return;
if (this._follow === false) {
var near_bottom = (e.scrollHeight - e.scrollTop - e.clientHeight) < 80;
if (!near_bottom) return;
}
e.scrollTop = e.scrollHeight;
}.bind(this));
var e = this.msg_box && this.msg_box.dom_element;
if (!e) return;
if (this._follow === false) {
var near_bottom = (e.scrollHeight - e.scrollTop - e.clientHeight) < 80;
if (!near_bottom) return;
}
e.scrollTop = e.scrollHeight;
}
_track_follow(){
var e = this.msg_box && this.msg_box.dom_element;