Merge follow/unfollow from kernel

Jakub Gladysz (1):
      ui: add follow button

kernelkind (14):
      bump nostrdb
      move polling responsibility to `AccountData`
      `AccountData`: decouple query from constructor
      add constructor for `AccountData`
      add `Contacts`
      use `Contacts` in `AccountData`
      expose `AccountSubs`
      Unify sub for contacts in accounts & timeline
      move `styled_button_toggleable` to notedeck_ui
      construct NoteBuilder from existing note
      send kind 3 event
      add actions for follow/unfollow
      add UI for (un)follow
      send contact list event on account creation

crates/notedeck_ui/src/profile/mod.rs

@@ -8,9 +8,9 @@ pub use picture::ProfilePic;
 pub use preview::ProfilePreview;
 
 use egui::{load::TexturePoll, Label, RichText};
-use notedeck::{NostrName, NotedeckTextStyle};
+use notedeck::{IsFollowing, NostrName, NotedeckTextStyle};
 
-use crate::app_images;
+use crate::{app_images, colors, widgets::styled_button_toggleable};
 
 pub fn display_name_widget<'a>(
     name: &'a NostrName<'a>,
@@ -115,3 +115,16 @@ pub fn banner(ui: &mut egui::Ui, banner_url: Option<&str>, height: f32) -> egui:
             .unwrap_or_else(|| ui.label(""))
     })
 }
+
+pub fn follow_button(following: IsFollowing) -> impl egui::Widget + 'static {
+    move |ui: &mut egui::Ui| -> egui::Response {
+        let (bg_color, text) = match following {
+            IsFollowing::Unknown => (ui.visuals().noninteractive().bg_fill, "Unknown"),
+            IsFollowing::Yes => (ui.visuals().widgets.inactive.bg_fill, "Unfollow"),
+            IsFollowing::No => (colors::PINK, "Follow"),
+        };
+
+        let enabled = following != IsFollowing::Unknown;
+        ui.add(styled_button_toggleable(text, bg_color, enabled))
+    }
+}

crates/notedeck_ui/src/widgets.rs

@@ -1,5 +1,6 @@
 use crate::anim::{AnimationHelper, ICON_EXPANSION_MULTIPLE};
 use egui::{emath::GuiRounding, Pos2, Stroke};
+use notedeck::NotedeckTextStyle;
 
 pub fn x_button(rect: egui::Rect) -> impl egui::Widget {
     move |ui: &mut egui::Ui| -> egui::Response {
@@ -33,3 +34,46 @@ pub fn x_button(rect: egui::Rect) -> impl egui::Widget {
         helper.take_animation_response()
     }
 }
+
+/// Button styled in the Notedeck theme
+pub fn styled_button_toggleable(
+    text: &str,
+    fill_color: egui::Color32,
+    enabled: bool,
+) -> impl egui::Widget + '_ {
+    move |ui: &mut egui::Ui| -> egui::Response {
+        let painter = ui.painter();
+        let text_color = if ui.visuals().dark_mode {
+            egui::Color32::WHITE
+        } else {
+            egui::Color32::BLACK
+        };
+
+        let galley = painter.layout(
+            text.to_owned(),
+            NotedeckTextStyle::Button.get_font_id(ui.ctx()),
+            text_color,
+            ui.available_width(),
+        );
+
+        let size = galley.rect.expand2(egui::vec2(16.0, 8.0)).size();
+        let mut button = egui::Button::new(galley).corner_radius(8.0);
+
+        if !enabled {
+            button = button
+                .sense(egui::Sense::focusable_noninteractive())
+                .fill(ui.visuals().noninteractive().bg_fill)
+                .stroke(ui.visuals().noninteractive().bg_stroke);
+        } else {
+            button = button.fill(fill_color);
+        }
+
+        let mut resp = ui.add_sized(size, button);
+
+        if !enabled {
+            resp = resp.on_hover_cursor(egui::CursorIcon::NotAllowed);
+        }
+
+        resp
+    }
+}