[fractal] fractal-gtk: message widget: Show last edit date in tooltip

[Daniel Garcia Moreno <danigm src gnome org>]

commit 881c10799cd7c265bae938aa9b5d01b1011cbbf3
Author: Juraj Fiala <jurf riseup net>
Date:   Tue Jun 30 18:49:44 2020 +0200

    fractal-gtk: message widget: Show last edit date in tooltip

 fractal-gtk/src/appop/message.rs        | 5 +++++
 fractal-gtk/src/uitypes.rs              | 1 +
 fractal-gtk/src/widgets/message.rs      | 5 ++++-
 fractal-gtk/src/widgets/room_history.rs | 2 ++
 4 files changed, 12 insertions(+), 1 deletion(-)
---
diff --git a/fractal-gtk/src/appop/message.rs b/fractal-gtk/src/appop/message.rs
index e3946cfd..182cf64b 100644
--- a/fractal-gtk/src/appop/message.rs
+++ b/fractal-gtk/src/appop/message.rs
@@ -550,6 +550,11 @@ fn create_ui_message(
         mtype: t,
         body: msg.body,
         date: msg.date,
+        replace_date: if msg.replace.is_some() {
+            Some(msg.date)
+        } else {
+            None
+        },
         thumb: msg.thumb,
         url: msg.url,
         formatted_body: msg.formatted_body,
diff --git a/fractal-gtk/src/uitypes.rs b/fractal-gtk/src/uitypes.rs
index f73f15d1..c6c44b1f 100644
--- a/fractal-gtk/src/uitypes.rs
+++ b/fractal-gtk/src/uitypes.rs
@@ -15,6 +15,7 @@ pub struct MessageContent {
     pub mtype: RowType,
     pub body: String,
     pub date: DateTime<Local>,
+    pub replace_date: Option<DateTime<Local>>,
     pub thumb: Option<String>,
     pub url: Option<String>,
     pub formatted_body: Option<String>,
diff --git a/fractal-gtk/src/widgets/message.rs b/fractal-gtk/src/widgets/message.rs
index d0d0de37..310e1500 100644
--- a/fractal-gtk/src/widgets/message.rs
+++ b/fractal-gtk/src/widgets/message.rs
@@ -242,7 +242,7 @@ impl MessageBox {
 
         body_bx.pack_start(&body, true, true, 0);
 
-        if msg.msg.replace != None {
+        if let Some(replace_date) = msg.replace_date {
             let edit_mark = gtk::Image::new_from_icon_name(
                 Some("document-edit-symbolic"),
                 gtk::IconSize::Button,
@@ -250,6 +250,9 @@ impl MessageBox {
             edit_mark.get_style_context().add_class("edit-mark");
             edit_mark.set_valign(gtk::Align::End);
 
+            let edit_tooltip = replace_date.format(&i18n("Last edited %c")).to_string();
+            edit_mark.set_tooltip_text(Some(&edit_tooltip));
+
             body_bx.pack_start(&edit_mark, false, false, 0);
         }
         body_bx
diff --git a/fractal-gtk/src/widgets/room_history.rs b/fractal-gtk/src/widgets/room_history.rs
index b318dd71..223feb1c 100644
--- a/fractal-gtk/src/widgets/room_history.rs
+++ b/fractal-gtk/src/widgets/room_history.rs
@@ -475,6 +475,7 @@ impl RoomHistory {
                         return Continue(true);
                     }
                     if let Some(pos) = edits.iter().position(|edit| item.id == edit.msg.replace) {
+                        edits[pos].date = item.date;
                         item = edits.remove(pos).unwrap();
                     }
 
@@ -621,6 +622,7 @@ impl RoomHistory {
                 }
                 _ => None,
             })?;
+        item.date = msg.date;
         let msg_widget = msg.widget.clone()?;
 
         item.widget = Some(create_row(