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fix(ui): TextArea 接收滚轮，内容超出时可滚动 - #19
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多行输入框此前不处理滚轮，只能随光标滚动，超出高度的内容无法用鼠标浏览。 现在指针位于 TextArea 上时，滚轮先滚动它自己的行；已经到达所需方向的末端时， 事件交还给页面，与浏览器行为一致。 - components: TextareaLayout.Wheel 报告是否真的移动，超出判断只看上次绘制的文本区域。 - ui: Page.Wheel 在下拉框之后、其他滚动路由之前检查 TextArea。 - 测试：components.TestTextareaWheelScrollsUntilItsEnd 覆盖区域外、顶端、末端和正常滚动。 Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
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背景
多行输入框（
ui.TextArea）不处理鼠标滚轮，只能随光标移动而滚动。Lithe 的本地历史规则列表因此无法用鼠标浏览超出高度的内容（Lithe 侧临时改为按行数撑开列表高度绕过，见 Lithe-IDEA #1938 之后的提交）。改动
components/textarea.go：TextareaLayout.Wheel(event)。指针在上次绘制的文本区域内时滚动它，并报告是否真的移动；已到达所需方向的末端、或内容不超出时返回 false。ui/page.go：Page.Wheel在下拉框之后、其他滚动路由之前检查 TextArea。返回 false 时事件继续交给页面，即外层滚动区域滚动。components/textarea_wheel_test.go：覆盖区域外、顶端向上、正常向下、末端四种情况。不在本 PR 范围内
desktop/go.mod的replace。验证
go test ./components/ ./ui/ -count=1（macOS）go test ./components/ -run TestTextareaWheel -vgofmt -l components uiLithe 桌面端的完整集成验证尚未在此分支上进行。
🤖 Generated with Claude Code