ElyMark: dropped and pasted pictures copy into assets and link at the caret (C14.10)

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

Cargo.lock

@@ -1922,7 +1922,7 @@ dependencies = [
 [[package]]
 name = "ely-gpui-component"
 version = "0.1.1"
-source = "git+https://git.zacharyzhang.com/ZacharyZhang-NY/Ely-GPUI-Components?rev=cd16b204f0ba56473b9ffb831bf2483bc232a6bb#cd16b204f0ba56473b9ffb831bf2483bc232a6bb"
+source = "git+https://git.zacharyzhang.com/ZacharyZhang-NY/Ely-GPUI-Components?rev=d126a7e7f7977dddae598486dd99aba79ce1f5f0#d126a7e7f7977dddae598486dd99aba79ce1f5f0"
 dependencies = [
  "alacritty_terminal",
  "anyhow",

Cargo.toml

@@ -19,7 +19,7 @@ jiff = "0.2"
 anyhow = "1"
 directories = "6"
 dunce = "1"
-ely-gpui-component = { git = "https://git.zacharyzhang.com/ZacharyZhang-NY/Ely-GPUI-Components", rev = "cd16b204f0ba56473b9ffb831bf2483bc232a6bb" }
+ely-gpui-component = { git = "https://git.zacharyzhang.com/ZacharyZhang-NY/Ely-GPUI-Components", rev = "d126a7e7f7977dddae598486dd99aba79ce1f5f0" }
 env_logger = "0.11"
 gpui = { package = "gpui-pre", version = "=0.3.8", default-features = false, features = ["stacker"] }
 gpui_platform = { package = "gpui-pre-platform", version = "=0.3.8", features = ["font-kit", "wayland", "x11"] }

agents.md

@@ -40,7 +40,7 @@ site/        官网（Vite 8、pnpm、TypeScript，无框架；等轴 SVG 积木
 
 ## 组件映射
 
-依赖 `ely-gpui-component`（pin cd16b20，gpui 为 crates.io 的 `gpui-pre` =0.3.8）。名字取自 `reference/Ely-GPUI-Components/src`。gpui 用法规则见该仓库 `AGENTS.md`。`tests/scripts/agents_md.py` 核对下表每个名字都是组件库公开项。
+依赖 `ely-gpui-component`（pin d126a7e，gpui 为 crates.io 的 `gpui-pre` =0.3.8）。名字取自 `reference/Ely-GPUI-Components/src`。gpui 用法规则见该仓库 `AGENTS.md`。`tests/scripts/agents_md.py` 核对下表每个名字都是组件库公开项。
 
 | 需要 | 用 |
 | --- | --- |
@@ -283,4 +283,4 @@ cargo run -p ely-doc          启动一个应用（ElyDoc 先 cargo build -p ely
 - 2026-10-11：Linux 包的实测（L1.6）。本机（Omarchy，Hyprland 0.56）装上六个 Arch 包与六个 AppImage，`linux-installed.sh` 两种都过；deb、rpm、Arch 包在 Ubuntu 26.04、Fedora 44、Arch 容器里装上、全部 ELF 找得到库；deb 与 rpm 的六个应用在各自容器的 Xvfb 下画出窗口（`linux-distros.sh`）。截图按窗口（`grim -T` 加 Hyprland 的 `stableId`）：按区域截时用户切换工作区或别的窗口盖住即截错。ElyMark 的文件监视略去读取后不会自激：重读前先比指纹（长度与修改时间），不打开文件。
 - 2026-10-11（用户定：替换 v0.1.3 的 Linux 包）：v0.1.3 发布里原有的六个 AppImage（无头，打不开窗口）已删去，换成本机容器里建出的六个应用各四种包（共 24 个），出自 L1.7 的提交（晚于该标签）；上传后逐个核对大小，ElyTree 的 AppImage 下载回来散列相同。`package.sh` 把每个 RUNPATH 按所在 ELF 解析（`$ORIGIN` 或 `${ORIGIN}` 开头，规范化后须在 AppDir 内），否则拒绝（如未修正的 cairo）：CI 用的是别处建好的引擎，旧构建会在这里报错而不是带进包里。替换的 Linux 包对应的源码随之上传到同一发布（`source.sh`，文件名带构建提交号），发布说明写明 Linux 包出自哪个提交。
 - 2026-10-11：`ci.sh` 用 `ELY_SHARE` 时，CI 克隆里的 `engines`、`reference` 须是指向共享克隆的链接（Windows 为目录联接，不查）；是本克隆自建的目录或指向别处即报错，不混用。`.gitignore` 的 `/engines`、`/reference` 不带斜杠，链接也被忽略（`source.sh` 要求工作区干净）。
-- 2026-10-11（用户定：ElyMark 不用 CEF，不用 Electron）：ElyMark 改为原生。界面用组件库的 Markdown 组件（`documents::MarkdownEditor` 一族，缺的在组件库补并推到 Gitea），解析用 markdown-rs（`markdown` 1.0.0），公式用 RaTeX，Mermaid 用 mermaid-rs-renderer，PDF 用 MuPDF Story；CEF 随之删去，ElyMail 的正文也不用 CEF 与 Electron。进度在 `tasks/TASKS.md` 的 C14。组件库 fcad0ff 与 508cc55：`MarkdownRenderer`、`MarkdownEditor`、Markdown 着色、块范围与链接查找改读 markdown-rs 的语法树（GitHub 风格加公式），引用式链接与图片按定义解析，图片把所在段落分开，单行 `$$…$$` 为块公式，软换行（LF、CRLF、CR）读作空格，嵌套在引用与列表里的定义同样解析，强调与链接里的图片仍是图片（链接里的图片可按）；`BlockEditor` 的导入导出不属 ElyMark，仍用 pulldown-cmark。markdown-rs 读嵌套图片时只留外层的说明。组件库 d5ecc5a：块公式经 `typography::Latex` 由 RaTeX 排出（字形为轮廓，按窗口缩放画），```` ```mermaid ```` 块经 `documents::Diagram` 由 mermaid-rs-renderer 画出（Mermaid 自己的深浅主题，底色与字色取 Ely 色板），都作为 gpui 资源在后台排版，RaTeX 或 Mermaid 对已解析的输入 panic 时显示为错误；`MarkdownRenderer::base` 给出文档所在文件夹，相对与 file 地址的图片从中读取并按自身大小、不超过栏宽显示，`data:` 地址解码，网络图片不载入（写明）。组件库 ab9a14c：每个公式、图与图片元素经 `primitives::held` 持有其资源，按资源计数持有者（8b9820b；画出的图存在共享的记录里，9036c92 起由最后离开的持有者释放，哪怕它自己还没收到图），最后一个持有者换了内容或离开窗口才从 gpui 资源缓存移除、在本帧之后从图集释放，共用同一内容的元素（含 gpui 缓存的视图）不受影响；公式按字形实际范围取画框，字形不被裁；公式失败显示原因、RaTeX 给的位置与原文，日志不含公式；`file:` 地址去掉查询与片段，`localhost` 为本机，Windows 上别的主机为共享路径，他处拒绝；Mermaid 的节点与饼图文字取 Ely 的前景色。组件库 2b6f551：`documents::MarkdownDocument` 是文件级的 Markdown 文档：全文与撤销在一个 `CodeEditor` 里（`CodeEditor::highlighter` 以 `markdown_highlights` 着色，无行号）；可视以 gpui `list` 逐块画出文件的顶层块（链接定义、HTML、front matter 照原文显示，每个字节都在块里或块间），按下的块开成源码（`TextInput`），其键入即刻算作文档的文字，写回为一步撤销，上下键越过块边进入相邻块，Esc 写回；Cmd（他处 Ctrl）按下交给链接；预览只读；源码为编辑器本身；128 KiB 以内当场解析，更长的在后台解析，解析中按下块不打开（日志）；新解析保留两端相同的块，滚动不跳。`CodeEditor` 的撤销历史最多留 64 MiB 文字，超出先丢最旧的步；`CodeEditor::reset` 换文字且撤销重新开始；`MarkdownMode` 加 `Preview`。组件库 fc181b4：一个插入点通用于各模式（编辑器的选区，写回的块移动它）；`set_caret` 与 `set_top_line` 分别设插入点与视图，换模式保持顶行；按下的块在前一块写回后仍是所按的块（按偏移换算，结构变了即不开并记日志）；块是 Tab 停靠点，Enter 或空格打开；预览不收按下、撤销与重做；撤销与重做每次记录、输入法组字、撤销、重做后都限在 64 MiB 内（先丢最旧的撤销，再丢最远的重做）。组件库 433c38f：只有对当下文字的解析才能打开块（解析的文字与编辑器相同），否则拒绝；要求的顶行在其文字解析后才落定：先到所在块，下一帧按块高的比例到块内位置，再有新的要求即接着放下一个；源码与列表之间切换保持顶行，可视与预览共用一个列表，切换不动滚动。组件库 abac8b4：顶行的要求带编号，迟到的帧回调只完成自己的那个；文字一换即按新文字重新放，放时按当下文字的行数夹住；`reveal` 是同样的要求（插入点设在该行，该行放到顶上），新文字解析后才落定。组件库 f59c9f7：文字超过读取上限（2 MiB）即丢掉旧的读取，大纲与块为空。ElyMark（C14.4）：视图即一个 `MarkdownDocument`，文本即文件原文（BOM 与 CRLF 照 `text.rs` 存回），新建、打开、保存、另存、重命名经外壳照旧；视图在建成后的下一轮更新向外壳报一次载入（文档在 `new` 里当场解析，外壳此时还未订阅）；文字超过 2 MiB 即只用源码并转去源码（随当前文字，不只看打开时）；网页实现的查找替换、表格、附件、书写视图的应用、导出与打印Line truncated
+- 2026-10-11（用户定：ElyMark 不用 CEF，不用 Electron）：ElyMark 改为原生。界面用组件库的 Markdown 组件（`documents::MarkdownEditor` 一族，缺的在组件库补并推到 Gitea），解析用 markdown-rs（`markdown` 1.0.0），公式用 RaTeX，Mermaid 用 mermaid-rs-renderer，PDF 用 MuPDF Story；CEF 随之删去，ElyMail 的正文也不用 CEF 与 Electron。进度在 `tasks/TASKS.md` 的 C14。组件库 fcad0ff 与 508cc55：`MarkdownRenderer`、`MarkdownEditor`、Markdown 着色、块范围与链接查找改读 markdown-rs 的语法树（GitHub 风格加公式），引用式链接与图片按定义解析，图片把所在段落分开，单行 `$$…$$` 为块公式，软换行（LF、CRLF、CR）读作空格，嵌套在引用与列表里的定义同样解析，强调与链接里的图片仍是图片（链接里的图片可按）；`BlockEditor` 的导入导出不属 ElyMark，仍用 pulldown-cmark。markdown-rs 读嵌套图片时只留外层的说明。组件库 d5ecc5a：块公式经 `typography::Latex` 由 RaTeX 排出（字形为轮廓，按窗口缩放画），```` ```mermaid ```` 块经 `documents::Diagram` 由 mermaid-rs-renderer 画出（Mermaid 自己的深浅主题，底色与字色取 Ely 色板），都作为 gpui 资源在后台排版，RaTeX 或 Mermaid 对已解析的输入 panic 时显示为错误；`MarkdownRenderer::base` 给出文档所在文件夹，相对与 file 地址的图片从中读取并按自身大小、不超过栏宽显示，`data:` 地址解码，网络图片不载入（写明）。组件库 ab9a14c：每个公式、图与图片元素经 `primitives::held` 持有其资源，按资源计数持有者（8b9820b；画出的图存在共享的记录里，9036c92 起由最后离开的持有者释放，哪怕它自己还没收到图），最后一个持有者换了内容或离开窗口才从 gpui 资源缓存移除、在本帧之后从图集释放，共用同一内容的元素（含 gpui 缓存的视图）不受影响；公式按字形实际范围取画框，字形不被裁；公式失败显示原因、RaTeX 给的位置与原文，日志不含公式；`file:` 地址去掉查询与片段，`localhost` 为本机，Windows 上别的主机为共享路径，他处拒绝；Mermaid 的节点与饼图文字取 Ely 的前景色。组件库 2b6f551：`documents::MarkdownDocument` 是文件级的 Markdown 文档：全文与撤销在一个 `CodeEditor` 里（`CodeEditor::highlighter` 以 `markdown_highlights` 着色，无行号）；可视以 gpui `list` 逐块画出文件的顶层块（链接定义、HTML、front matter 照原文显示，每个字节都在块里或块间），按下的块开成源码（`TextInput`），其键入即刻算作文档的文字，写回为一步撤销，上下键越过块边进入相邻块，Esc 写回；Cmd（他处 Ctrl）按下交给链接；预览只读；源码为编辑器本身；128 KiB 以内当场解析，更长的在后台解析，解析中按下块不打开（日志）；新解析保留两端相同的块，滚动不跳。`CodeEditor` 的撤销历史最多留 64 MiB 文字，超出先丢最旧的步；`CodeEditor::reset` 换文字且撤销重新开始；`MarkdownMode` 加 `Preview`。组件库 fc181b4：一个插入点通用于各模式（编辑器的选区，写回的块移动它）；`set_caret` 与 `set_top_line` 分别设插入点与视图，换模式保持顶行；按下的块在前一块写回后仍是所按的块（按偏移换算，结构变了即不开并记日志）；块是 Tab 停靠点，Enter 或空格打开；预览不收按下、撤销与重做；撤销与重做每次记录、输入法组字、撤销、重做后都限在 64 MiB 内（先丢最旧的撤销，再丢最远的重做）。组件库 433c38f：只有对当下文字的解析才能打开块（解析的文字与编辑器相同），否则拒绝；要求的顶行在其文字解析后才落定：先到所在块，下一帧按块高的比例到块内位置，再有新的要求即接着放下一个；源码与列表之间切换保持顶行，可视与预览共用一个列表，切换不动滚动。组件库 abac8b4：顶行的要求带编号，迟到的帧回调只完成自己的那个；文字一换即按新文字重新放，放时按当下文字的行数夹住；`reveal` 是同样的要求（插入点设在该行，该行放到顶上），新文字解析后才落定。组件库 f59c9f7：文字超过读取上限（2 MiB）即丢掉旧的读取，大纲与块为空。ElyMark（C14.4）：视图即一个 `MarkdownDocument`，文本即文件原文（BOM 与 CRLF 照 `text.rs` 存回），新建、打开、保存、另存、重命名经外壳照旧；视图在建成后的下一轮更新向外壳报一次载入（文档在 `new` 里当场解析，外壳此时还未订阅）；文字超过 2 MiB 即只用源码并转去源码（随当前文字，不只看打开时）；网页实现的查找替换、表格、附件、书写视图的应用、导出与打印Line truncated

apps/ely-mark/src/attach.rs

@@ -0,0 +1,299 @@
+//! Pictures dropped or pasted, copied beside the file (MARK-07).
+
+use std::{
+    io,
+    path::{Path, PathBuf},
+};
+
+use ely_gpui_component::documents::Attachment;
+use ely_ui::i18n::text;
+use gpui::{App, Context, ImageFormat};
+
+use crate::view::{Failed, MarkView, Mode};
+
+const PICTURES: &[&str] = &["png", "jpg", "jpeg", "gif", "webp", "svg", "bmp"];
+
+/// What goes into `assets/`: a file, or pasted bytes.
+enum Source {
+    File(PathBuf),
+    Bytes(String, Vec<u8>),
+}
+
+fn said(key: &str, cx: &App) -> Failed {
+    Failed(text(cx, key, &[]).to_string())
+}
+
+impl MarkView {
+    /// Copies pictures off the window, then links them.
+    pub(crate) fn attach(&mut self, attached: &Attachment, cx: &mut Context<Self>) {
+        if self.mode == Mode::Preview {
+            return cx.emit(said("mark.attach.preview", cx));
+        }
+        let Some(folder) = self.folder.clone() else {
+            return cx.emit(said("mark.attach.untitled", cx));
+        };
+        let sources: Vec<Source> = match attached {
+            Attachment::Files(paths) => {
+                let (pictures, others): (Vec<&PathBuf>, Vec<&PathBuf>) =
+                    paths.iter().partition(|path| picture(path));
+                if !others.is_empty() {
+                    cx.emit(said("mark.attach.images", cx));
+                }
+                pictures.into_iter().cloned().map(Source::File).collect()
+            }
+            Attachment::Picture(image) => {
+                let millis = std::time::SystemTime::now()
+                    .duration_since(std::time::UNIX_EPOCH)
+                    .expect("the clock is past 1970")
+                    .as_millis();
+                let name = format!("pasted-{millis}.{}", extension(image.format()));
+                vec![Source::Bytes(name, image.bytes().to_vec())]
+            }
+        };
+        if sources.is_empty() {
+            return;
+        }
+        log::info!("mark: {} pictures copy in", sources.len());
+        let assets = folder.join("assets");
+        cx.spawn(async move |view, cx| {
+            let copied = cx
+                .background_executor()
+                .spawn(async move {
+                    sources
+                        .into_iter()
+                        .map(|source| match source {
+                            Source::File(path) => ely_files::import_attachment(&path, &assets),
+                            Source::Bytes(name, bytes) => {
+                                ely_files::write_attachment(&name, &bytes, &assets)
+                            }
+                        })
+                        .collect::<io::Result<Vec<PathBuf>>>()
+                })
+                .await;
+            view.update(cx, |view, cx| view.attached(folder, copied, cx))
+                .ok();
+        })
+        .detach();
+    }
+
+    /// Links the copies, unless the file moved meanwhile.
+    fn attached(
+        &mut self,
+        folder: PathBuf,
+        copied: io::Result<Vec<PathBuf>>,
+        cx: &mut Context<Self>,
+    ) {
+        let copied = match copied {
+            Ok(copied) => copied,
+            Err(error) => {
+                log::error!("mark: a picture did not copy: {error}");
+                let said = text(cx, "office.error.engine", &[("error", &error.to_string())]);
+                return cx.emit(Failed(said.to_string()));
+            }
+        };
+        if self.folder.as_ref() != Some(&folder) {
+            log::info!("mark: the file moved while pictures copied");
+            let assets = folder.join("assets").display().to_string();
+            let said = text(cx, "mark.attach.moved", &[("folder", &assets)]);
+            return cx.emit(Failed(said.to_string()));
+        }
+        let links: Vec<String> = copied.iter().map(|copy| link(&folder, copy)).collect();
+        let written = self
+            .document()
+            .clone()
+            .update(cx, |document, cx| document.insert(&links.join("\n"), cx));
+        if !written {
+            cx.emit(said("mark.attach.preview", cx));
+        }
+    }
+}
+
+fn picture(path: &Path) -> bool {
+    path.extension()
+        .is_some_and(|ext| PICTURES.contains(&ext.to_string_lossy().to_ascii_lowercase().as_str()))
+}
+
+fn extension(format: ImageFormat) -> &'static str {
+    match format {
+        ImageFormat::Png => "png",
+        ImageFormat::Jpeg => "jpg",
+        ImageFormat::Gif => "gif",
+        ImageFormat::Webp => "webp",
+        ImageFormat::Svg => "svg",
+        ImageFormat::Bmp => "bmp",
+        ImageFormat::Tiff => "tiff",
+        ImageFormat::Ico => "ico",
+        ImageFormat::Pnm => "pnm",
+    }
+}
+
+/// The Markdown link to `copy`, relative to `folder`.
+fn link(folder: &Path, copy: &Path) -> String {
+    let relative = copy.strip_prefix(folder).expect("copied under the folder");
+    let address: Vec<String> = relative
+        .components()
+        .map(|part| escaped(&part.as_os_str().to_string_lossy()))
+        .collect();
+    let stem = copy.file_stem().unwrap_or_default().to_string_lossy();
+    let alt = stem
+        .replace('\\', "\\\\")
+        .replace('[', "\\[")
+        .replace(']', "\\]");
+    format!("![{alt}]({})", address.join("/"))
+}
+
+/// A path part, every byte but plain ones escaped.
+fn escaped(part: &str) -> String {
+    part.bytes()
+        .map(|byte| match byte {
+            b'A'..=b'Z' | b'a'..=b'z' | b'0'..=b'9' | b'-' | b'.' | b'_' | b'~' => {
+                (byte as char).to_string()
+            }
+            other => format!("%{other:02X}"),
+        })
+        .collect()
+}
+
+#[cfg(test)]
+mod tests {
+    use std::{cell::RefCell, path::Path, rc::Rc};
+
+    use ely_gpui_component::documents::Attachment;
+    use gpui::{Entity, Image, ImageFormat, TestAppContext, VisualTestContext};
+
+    use super::link;
+    use crate::desk::{
+        Desk,
+        tests::{open, start},
+    };
+    use crate::view::{Failed, MarkView};
+
+    /// What the view says, in order.
+    type Said = Rc<RefCell<Vec<String>>>;
+
+    /// A saved file open in ElyMark, and what it says.
+    fn saved(
+        cx: &mut TestAppContext,
+    ) -> (
+        Entity<MarkView>,
+        &'static mut VisualTestContext,
+        [tempfile::TempDir; 2],
+        Said,
+    ) {
+        let (data, files) = (
+            tempfile::tempdir().expect("data"),
+            tempfile::tempdir().expect("files"),
+        );
+        let path = files.path().join("a.md");
+        std::fs::write(
+            &path, "a
+",
+        )
+        .expect("a file");
+        let (desk, cx) = start(cx, data.path());
+        open(&desk, &path, cx);
+        let view = desk.read_with(cx, |desk: &Desk, _| desk.active_view().expect("a tab"));
+        let said = Rc::new(RefCell::new(Vec::new()));
+        let heard = said.clone();
+        cx.update(|_, cx| {
+            cx.subscribe(&view, move |_, failed: &Failed, _| {
+                heard.borrow_mut().push(failed.0.clone())
+            })
+            .detach()
+        });
+        (view, cx, [data, files], said)
+    }
+
+    fn attach(view: &Entity<MarkView>, attached: Attachment, cx: &mut VisualTestContext) {
+        let document = view.read_with(cx, |view, _| view.document().clone());
+        document.update(cx, |_, cx| cx.emit(attached));
+        cx.run_until_parked();
+    }
+
+    fn current(view: &Entity<MarkView>, cx: &mut VisualTestContext) -> String {
+        view.read_with(cx, |view, cx| view.document().read(cx).text(cx))
+    }
+
+    #[gpui::test]
+    fn a_dropped_picture_is_copied_beside_and_linked(cx: &mut TestAppContext) {
+        let (view, cx, [_, files], said) = saved(cx);
+        let shot = files.path().join("my shot.png");
+        std::fs::write(&shot, "png").expect("a picture");
+        attach(&view, Attachment::Files(vec![shot]), cx);
+        assert!(files.path().join("assets/my shot.png").exists());
+        assert!(
+            current(&view, cx).contains("![my shot](assets/my%20shot.png)"),
+            "{}",
+            current(&view, cx)
+        );
+        assert!(said.borrow().is_empty());
+    }
+
+    #[gpui::test]
+    fn a_pasted_picture_is_written_and_linked(cx: &mut TestAppContext) {
+        let (view, cx, [_, files], _) = saved(cx);
+        attach(
+            &view,
+            Attachment::Picture(Image::from_bytes(ImageFormat::Png, vec![1])),
+            cx,
+        );
+        let assets: Vec<_> = std::fs::read_dir(files.path().join("assets"))
+            .expect("assets")
+            .collect();
+        assert_eq!(assets.len(), 1);
+        assert!(current(&view, cx).contains("](assets/pasted-"));
+    }
+
+    #[gpui::test]
+    fn other_files_and_untitled_text_take_no_picture(cx: &mut TestAppContext) {
+        let (view, cx, [_, files], said) = saved(cx);
+        let note = files.path().join("note.txt");
+        std::fs::write(&note, "text").expect("a file");
+        attach(&view, Attachment::Files(vec![note]), cx);
+        assert!(!files.path().join("assets").exists());
+        assert_eq!(said.borrow().len(), 1, "other files are refused");
+        view.update(cx, |view, _| view.folder = None);
+        attach(
+            &view,
+            Attachment::Picture(Image::from_bytes(ImageFormat::Png, vec![1])),
+            cx,
+        );
+        assert_eq!(said.borrow().len(), 2, "untitled text is refused");
+        assert_eq!(
+            current(&view, cx),
+            "a
+"
+        );
+    }
+
+    #[gpui::test]
+    fn a_file_moved_while_copying_gets_no_link(cx: &mut TestAppContext) {
+        let (view, cx, [_, files], said) = saved(cx);
+        let document = view.read_with(cx, |view, _| view.document().clone());
+        document.update(cx, |_, cx| {
+            cx.emit(Attachment::Picture(Image::from_bytes(
+                ImageFormat::Png,
+                vec![1],
+            )))
+        });
+        let elsewhere = files.path().join("elsewhere");
+        view.update(cx, |view, cx| view.moved(elsewhere, cx));
+        cx.run_until_parked();
+        assert_eq!(
+            current(&view, cx),
+            "a
+"
+        );
+        assert_eq!(said.borrow().len(), 1, "the move is said");
+    }
+
+    #[test]
+    fn links_escape_their_address_and_alt() {
+        let folder = Path::new("/notes");
+        let copy = folder.join("assets").join("a b[1].png");
+        assert_eq!(
+            link(folder, &copy),
+            "![a b\\[1\\]](assets/a%20b%5B1%5D.png)"
+        );
+    }
+}

apps/ely-mark/src/engine.rs

@@ -4,7 +4,7 @@ use std::{
     convert::Infallible,
     hash::{DefaultHasher, Hash as _, Hasher as _},
     io,
-    path::{Path, PathBuf},
+    path::Path,
     sync::{Arc, Mutex},
 };
 
@@ -36,12 +36,6 @@ impl Text {
 
 pub type Doc = Arc<Mutex<Text>>;
 
-/// A load: the file as read, and where it is.
-pub struct Opened {
-    pub source: Source,
-    pub path: PathBuf,
-}
-
 /// The history mark: this text's length and hash.
 pub fn mark(text: &str) -> String {
     let mut hasher = DefaultHasher::new();
@@ -56,10 +50,10 @@ impl Engine for Mark {
     type Worker = ();
     type Doc = Doc;
     type View = MarkView;
-    type Loaded = Opened;
+    type Loaded = Source;
     type Import = Infallible;
 
-    fn load(_: &mut (), from: Load<Infallible>) -> io::Result<Opened> {
+    fn load(_: &mut (), from: Load<Infallible>) -> io::Result<Source> {
         let path = match from {
             Load::File(path, _) => path,
             Load::Import(_, never) => match *never {},
@@ -69,30 +63,19 @@ impl Engine for Mark {
             io::ErrorKind::PermissionDenied => io::Error::other(error),
             _ => error,
         })?;
-        Ok(Opened {
-            source: Source::decode(bytes)?,
-            path: path.to_path_buf(),
-        })
+        Source::decode(bytes)
     }
 
     fn open(
         _: &Arc<Mutex<()>>,
-        loaded: Opened,
+        loaded: Source,
         window: &mut Window,
         cx: &mut App,
     ) -> io::Result<(Doc, Entity<MarkView>, String)> {
-        let Opened {
-            source: loaded,
-            path,
-        } = loaded;
-        let folder = path
-            .parent()
-            .expect("a file sits in a folder")
-            .to_path_buf();
         let mark = mark(&loaded.text);
         let doc = Arc::new(Mutex::new(Text::new(loaded)));
         let saved = mark.clone();
-        let view = cx.new(|cx| MarkView::new(Arc::clone(&doc), saved, folder, window, cx));
+        let view = cx.new(|cx| MarkView::new(Arc::clone(&doc), saved, window, cx));
         Ok((doc, view, mark))
     }
 

apps/ely-mark/src/main.rs

@@ -1,6 +1,7 @@
 // Release builds open no console on Windows.
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
 
+mod attach;
 mod autosave;
 mod compare;
 mod desk;

apps/ely-mark/src/view.rs

@@ -74,8 +74,8 @@ pub struct MarkView {
     /// The mark at the last load or save.
     saved: String,
     pub mode: Mode,
-    /// The file's folder: pictures resolve here.
-    pub(crate) folder: PathBuf,
+    /// A saved file's folder: pictures resolve and go here.
+    pub(crate) folder: Option<PathBuf>,
     /// The mode first took input (PERF-07).
     pub(crate) shown: bool,
     pub focus: FocusHandle,
@@ -85,13 +85,7 @@ impl EventEmitter<Reported> for MarkView {}
 impl EventEmitter<Failed> for MarkView {}
 
 impl MarkView {
-    pub fn new(
-        doc: Doc,
-        saved: String,
-        folder: PathBuf,
-        window: &mut Window,
-        cx: &mut Context<Self>,
-    ) -> Self {
+    pub fn new(doc: Doc, saved: String, window: &mut Window, cx: &mut Context<Self>) -> Self {
         let text = doc.lock().expect("the text lock").current.clone();
         let mode = match text.len() > LARGEST_READ {
             true => Mode::Source,
@@ -100,13 +94,14 @@ impl MarkView {
         let view = cx.weak_entity();
         let document = cx.new(|cx| {
             let mut document = MarkdownDocument::new(text, mode.shown(), window, cx);
-            document.set_base(folder.as_path(), cx);
             document.on_link(move |url, _, cx| {
                 view.update(cx, |view, cx| view.follow(url, cx)).ok();
             });
             document
         });
         cx.subscribe_in(&document, window, Self::heard).detach();
+        cx.subscribe(&document, |view, _, attached, cx| view.attach(attached, cx))
+            .detach();
         // The shell hears the load.
         cx.defer_in(window, |view, _, cx| {
             view.show_once(cx);
@@ -125,7 +120,7 @@ impl MarkView {
             changed: 0,
             saved,
             mode,
-            folder,
+            folder: None,
             shown: false,
             focus,
         }
@@ -251,14 +246,14 @@ impl MarkView {
         }
     }
 
-    /// The file moved; pictures follow it.
+    /// The saved file's folder; pictures follow it.
     pub fn moved(&mut self, folder: PathBuf, cx: &mut Context<Self>) {
-        if folder == self.folder {
+        if self.folder.as_ref() == Some(&folder) {
             return;
         }
         self.document
             .update(cx, |document, cx| document.set_base(folder.as_path(), cx));
-        self.folder = folder;
+        self.folder = Some(folder);
     }
 
     fn heard(

apps/ely-mark/src/view/tests.rs

@@ -18,9 +18,7 @@ fn open<'a>(
     let source = Source::decode(text.as_bytes().to_vec()).expect("reads");
     let saved = mark(&source.text);
     let doc = Arc::new(Mutex::new(Text::new(source)));
-    let folder = std::env::temp_dir();
-    let (view, cx) =
-        cx.add_window_view(move |window, cx| MarkView::new(doc, saved, folder, window, cx));
+    let (view, cx) = cx.add_window_view(move |window, cx| MarkView::new(doc, saved, window, cx));
     cx.update(|window, _| window.activate_window());
     cx.run_until_parked();
     (view, cx)
@@ -166,8 +164,7 @@ fn the_shell_hears_a_load_it_subscribed_to(cx: &mut TestAppContext) {
         let source = Source::decode(b"# Opened\n".to_vec()).expect("reads");
         let saved = mark(&source.text);
         let doc = Arc::new(Mutex::new(Text::new(source)));
-        let folder = std::env::temp_dir();
-        let view = cx.new(|cx| MarkView::new(doc, saved, folder, window, cx));
+        let view = cx.new(|cx| MarkView::new(doc, saved, window, cx));
         // As the shell: subscribed after the view is made.
         let count = count.clone();
         cx.subscribe(&view, move |_, _, _: &Reported, _| {

crates/ely-files/src/lib.rs

@@ -19,6 +19,7 @@ pub use task::RecoveryTask;
 
 pub use save::{
     SaveError, Saved, atomic_capable, claim_all, export, import_attachment, same_file, save,
+    write_attachment,
     save_as, save_atomic, save_overwrite, save_with_backup, save_with_probe,
 };
 pub use session::{Fingerprint, Open, SaveState, SaveTicket, Session, Sessions, StaleTicket};

crates/ely-files/src/save.rs

@@ -212,24 +212,38 @@ pub fn same_file(a: &Path, b: &Path) -> io::Result<bool> {
 
 /// Copies an attachment in; the source is never touched (FILE-07).
 pub fn import_attachment(source: &Path, dir: &Path) -> io::Result<PathBuf> {
-    std::fs::create_dir_all(dir).map_err(|e| with_path(dir, e))?;
     let name = source.file_name().ok_or_else(|| {
         io::Error::new(
             io::ErrorKind::InvalidInput,
             format!("{} has no file name", source.display()),
         )
     })?;
-    let mut target = dir.join(name);
-    let stem = Path::new(name)
-        .file_stem()
-        .unwrap_or_default()
-        .to_string_lossy()
-        .into_owned();
-    let ext = Path::new(name)
+    let mut from = std::fs::File::open(source).map_err(|e| with_path(source, e))?;
+    let target = attach(dir, Path::new(name), |to| io::copy(&mut from, to).map(drop))?;
+    log::info!("files: imported {} to {}", source.display(), target.display());
+    Ok(target)
+}
+
+/// Writes `bytes` into `dir` as `name`, or a free variant.
+pub fn write_attachment(name: &str, bytes: &[u8], dir: &Path) -> io::Result<PathBuf> {
+    let target = attach(dir, Path::new(name), |to| to.write_all(bytes))?;
+    log::info!("files: wrote {} bytes to {}", bytes.len(), target.display());
+    Ok(target)
+}
+
+/// Claims a free name like `name`, then fills it.
+fn attach(
+    dir: &Path,
+    name: &Path,
+    fill: impl FnOnce(&mut std::fs::File) -> io::Result<()>,
+) -> io::Result<PathBuf> {
+    std::fs::create_dir_all(dir).map_err(|e| with_path(dir, e))?;
+    let stem = name.file_stem().unwrap_or_default().to_string_lossy().into_owned();
+    let ext = name
         .extension()
         .map(|ext| ext.to_string_lossy().into_owned())
         .unwrap_or_default();
-    let mut from = std::fs::File::open(source).map_err(|e| with_path(source, e))?;
+    let mut target = dir.join(name);
     let mut counter = 1;
     // Claims the name; another writer's file is never replaced.
     let mut to = loop {
@@ -242,17 +256,12 @@ pub fn import_attachment(source: &Path, dir: &Path) -> io::Result<PathBuf> {
             Err(e) => return Err(with_path(&target, e)),
         }
     };
-    let copied = io::copy(&mut from, &mut to).and_then(|_| to.flush());
-    if let Err(e) = copied {
+    let filled = fill(&mut to).and_then(|()| to.flush());
+    if let Err(e) = filled {
         // A half copy is not left behind.
         std::fs::remove_file(&target).ok();
         return Err(with_path(&target, e));
     }
-    log::info!(
-        "files: imported {} to {}",
-        source.display(),
-        target.display()
-    );
     Ok(target)
 }
 

crates/ely-files/src/save/tests.rs

@@ -180,6 +180,15 @@ fn an_import_copies_and_never_deletes() {
     assert_eq!(read(&second), "png-bytes");
 }
 
+#[test]
+fn written_bytes_take_a_free_name() {
+    let dir = tempfile::tempdir().expect("a temp dir");
+    let first = write_attachment("pasted.png", b"one", dir.path()).expect("the first write");
+    let second = write_attachment("pasted.png", b"two", dir.path()).expect("the second write");
+    assert_ne!(first, second);
+    assert_eq!((read(&first), read(&second)), ("one".into(), "two".into()));
+}
+
 #[test]
 fn a_numbered_import_name_fits_long_file_names() {
     let dir = tempfile::tempdir().expect("a temp dir");

scripts/fetch-references.sh

@@ -36,7 +36,7 @@ fetch() { # name url rev [sparse paths...]
   echo "fetch $name $rev"
 }
 
-fetch Ely-GPUI-Components https://git.zacharyzhang.com/ZacharyZhang-NY/Ely-GPUI-Components.git cd16b204f0ba56473b9ffb831bf2483bc232a6bb
+fetch Ely-GPUI-Components https://git.zacharyzhang.com/ZacharyZhang-NY/Ely-GPUI-Components.git d126a7e7f7977dddae598486dd99aba79ce1f5f0
 fetch zed https://github.com/zed-industries/zed.git 1a28cff4b409169bac058bca40dfbfeb7621d19b
 fetch libreoffice-core https://github.com/LibreOffice/core.git 8221e31b3ac356a1623c672912a3d2b492f7e3d1 \
   include/LibreOfficeKit libreofficekit desktop/source/lib desktop/inc \