Mail · Reading: a message reader, a conversation, and quoted text

MailReader opens a message under its subject: the sender's picture,
name and address, who it went to, when it came, and Reply, Reply all
when it went to more than one, and Forward, each only with a handler;
then its words and its files, each downloadable. MailThreadView lays a
conversation oldest first: the newest stands open, the others fold to
a line of the sender, their first words and when, which a press, Enter
or Space opens. QuotedText folds words quoted from before behind a
small mark; open, they sit behind a rule. Long names give way at the
label width.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

examples/gallery/pages/mail/read.rs

@@ -0,0 +1,97 @@
+use ely_gpui_component::mail::{Contact, MailReader, MailThreadView, Message, QuotedText};
+use gpui::{App, IntoElement, ParentElement, Styled, div, px};
+use jiff::{SignedDuration, Timestamp};
+
+use crate::{probe::probe, ui::section};
+
+fn ana() -> Contact {
+    Contact::new("Ana Lima", "ana@atrium.studio")
+}
+
+fn ben() -> Contact {
+    Contact::new("Ben Ito", "ben@atrium.studio")
+}
+
+fn you() -> Contact {
+    Contact::new("You", "you@atrium.studio")
+}
+
+fn ago(minutes: i64) -> Timestamp {
+    Timestamp::now() - SignedDuration::from_mins(minutes)
+}
+
+fn paragraph(text: &'static str) -> impl IntoElement {
+    div().child(text)
+}
+
+pub fn reader(cx: &mut App) -> impl IntoElement + use<> {
+    let message = Message::new("review", ana(), ago(12))
+        .to([you(), ben()])
+        .cc([Contact::new("Dev Rao", "dev@atrium.studio")])
+        .file("atrium-plan.pdf", 2_400_000)
+        .file("stair-hall.jpg", 3_100_000);
+    section(
+        "MailReader / QuotedText",
+        "A message open for reading: the subject, who wrote to whom and when, replies, the words and the files. Words quoted from before fold behind a small mark until pressed.",
+        cx,
+    )
+    .child(probe(
+        "mail-reader",
+        div().w(px(640.)).child(
+            MailReader::new("mail-reader", "Friday's review moves to 10:00", message)
+                .on_reply(|key, _, _| log::info!("gallery: reply {key}"))
+                .on_reply_all(|key, _, _| log::info!("gallery: reply all {key}"))
+                .on_forward(|key, _, _| log::info!("gallery: forward {key}"))
+                .on_download(|key, file, _, _| log::info!("gallery: download {key} {file}"))
+                .child(paragraph("Morning both,"))
+                .child(paragraph(
+                    "Friday's review moves to 10:00, in the model room. The client wants to see the stair at the scale we'll build it, so please bring the plaster samples if they've dried.",
+                ))
+                .child(paragraph("The plan and a photo of the stair hall are attached. — Ana"))
+                .child(
+                    QuotedText::new("mail-quoted")
+                        .child(paragraph("On Thursday, Ben Ito wrote:"))
+                        .child(paragraph(
+                            "The samples are in the stair hall: lime, tadelakt and a sanded gypsum. The tadelakt needs another day.",
+                        )),
+                ),
+        ),
+    ))
+}
+
+pub fn thread(cx: &mut App) -> impl IntoElement + use<> {
+    let message = |key: &'static str, from: Contact, minutes: i64, snippet: &'static str| {
+        Message::new(key, from, ago(minutes))
+            .to([you()])
+            .snippet(snippet)
+    };
+    section(
+        "MailThreadView",
+        "A conversation, oldest first: the newest stands open, and the others fold to a line of who, their first words and when, which a press, Enter or Space opens.",
+        cx,
+    )
+    .child(probe(
+        "mail-thread",
+        div().w(px(640.)).child(
+            MailThreadView::new("mail-thread", "Plaster samples")
+                .on_reply(|key, _, _| log::info!("gallery: reply {key}"))
+                .on_forward(|key, _, _| log::info!("gallery: forward {key}"))
+                .message(
+                    message("s1", ben(), 60 * 30, "Three finishes are in the stair hall: lime, tadelakt and a sanded gypsum."),
+                    paragraph("Three finishes are in the stair hall: lime, tadelakt and a sanded gypsum. Leave notes on the backs."),
+                )
+                .message(
+                    message("s2", ana(), 60 * 26, "The lime reads warmest by the windows. Can we see it at dusk?"),
+                    paragraph("The lime reads warmest by the windows. Can we see it at dusk?"),
+                )
+                .message(
+                    message("s3", Contact::new("Chloé Martin", "chloe@atrium.studio"), 60 * 5, "Dusk works. I'll bring the lamp we use for the model."),
+                    paragraph("Dusk works. I'll bring the lamp we use for the model."),
+                )
+                .message(
+                    message("s4", ben(), 40, "The tadelakt is sealed. All three are ready for Friday."),
+                    paragraph("The tadelakt is sealed. All three are ready for Friday."),
+                ),
+        ),
+    ))
+}