Add scroll to backlog / bottom button

src/buffer.rs

@@ -397,6 +397,17 @@ impl Buffer {
  .map(|message| Message::Highlights(highlights::Message::ScrollView(message))),
  }
  }
+
+ pub fn is_scrolled_to_bottom(&self) -> Option<bool> {
+ match self {
+ Buffer::Empty | Buffer::FileTransfers(_) => None,
+ Buffer::Channel(channel) => Some(channel.scroll_view.is_scrolled_to_bottom()),
+ Buffer::Server(server) => Some(server.scroll_view.is_scrolled_to_bottom()),
+ Buffer::Query(query) => Some(query.scroll_view.is_scrolled_to_bottom()),
+ Buffer::Logs(log) => Some(log.scroll_view.is_scrolled_to_bottom()),
+ Buffer::Highlights(highlights) => Some(highlights.scroll_view.is_scrolled_to_bottom()),
+ }
+ }
 }
 
 impl From<data::Buffer> for Buffer {

src/buffer/scroll_view.rs

@@ -350,6 +350,10 @@ impl State {
  )
  }
 
+ pub fn is_scrolled_to_bottom(&self) -> bool {
+ matches!(self.status, Status::Idle(Anchor::Bottom))
+ }
+
  pub fn scroll_to_message(
  &mut self,
  message: message::Hash,

src/screen/dashboard.rs

@@ -411,6 +411,35 @@ impl Dashboard {
  pane::Message::MaximizePane => self.maximize_pane(),
  pane::Message::Popout => return (self.popout_pane(main_window), None),
  pane::Message::Merge => return (self.merge_pane(config, main_window), None),
+ pane::Message::ScrollToBacklog => {
+ if let Some((window, pane)) = self.focus {
+ if let Some(state) = self.panes.get_mut(main_window.id, window, pane) {
+ return (
+ state.buffer.scroll_to_backlog(&self.history, config).map(
+ move |message| {
+ Message::Pane(
+ window,
+ pane::Message::Buffer(pane, message),
+ )
+ },
+ ),
+ None,
+ );
+ }
+ }
+ }
+ pane::Message::ScrollToBottom => {
+ if let Some((window, pane)) = self.focus {
+ if let Some(state) = self.panes.get_mut(main_window.id, window, pane) {
+ return (
+ state.buffer.scroll_to_end().map(move |message| {
+ Message::Pane(window, pane::Message::Buffer(pane, message))
+ }),
+ None,
+ );
+ }
+ }
+ }
  }
  }
  Message::Sidebar(message) => {

src/screen/dashboard/pane.rs

@@ -21,6 +21,8 @@ pub enum Message {
  ToggleShowTopic,
  Popout,
  Merge,
+ ScrollToBacklog,
+ ScrollToBottom,
 }
 
 #[derive(Clone)]
@@ -162,6 +164,29 @@ impl TitleBar {
  let mut controls = row![].spacing(2);
 
  if let Buffer::Channel(state) = &buffer {
+ // Show scroll-to-bottom / scroll-to-backlog depending if scrollable is anchored to the end or not
+ let (icon, tooltip_text, message) =
+ if buffer.is_scrolled_to_bottom().unwrap_or_default() {
+ (icon::dot(), "Scroll to Backlog", Message::ScrollToBacklog)
+ } else {
+ (icon::cancel(), "Scroll to Bottom", Message::ScrollToBottom)
+ };
+
+ let scrollable_button = button(center(icon))
+ .padding(5)
+ .width(22)
+ .height(22)
+ .on_press(message)
+ .style(|theme, status| theme::button::secondary(theme, status, false));
+
+ let scrollable_button_with_tooltip = tooltip(
+ scrollable_button,
+ show_tooltips.then_some(tooltip_text),
+ tooltip::Position::Bottom,
+ );
+
+ controls = controls.push(scrollable_button_with_tooltip);
+
  // Show topic button only if there is a topic to show
  if let Some(topic) = clients.get_channel_topic(&state.server, &state.channel) {
  if topic.content.is_some() {