tui: Add placeholder for issue browser

Signed-off-by: Erik Kundt <erik@zirkular.io>

radicle-tui/src/app.rs

@@ -16,7 +16,7 @@ use radicle_tui::ui;
 use radicle_tui::ui::components::container::{GlobalListener, LabeledContainer, Tabs};
 use radicle_tui::ui::components::context::{ContextBar, Shortcuts};
 use radicle_tui::ui::components::list::PropertyList;
-use radicle_tui::ui::components::workspace::{Browser, PatchActivity, PatchFiles};
+use radicle_tui::ui::components::workspace::{Browser, IssueBrowser, PatchActivity, PatchFiles};
 use radicle_tui::ui::layout;
 use radicle_tui::ui::theme::{self, Theme};
 use radicle_tui::ui::widget::Widget;
@@ -230,7 +230,7 @@ impl ViewPage for Home {
         let navigation = ui::home_navigation(theme).to_boxed();
 
         let dashboard = ui::dashboard(theme, &context.id, &context.project).to_boxed();
-        let issue_browser = Box::<Phantom>::default();
+        let issue_browser = ui::issue_browser(&theme).to_boxed();
         let patch_browser = ui::patch_browser(theme, &context.patches, &context.profile).to_boxed();
 
         let shortcuts = ui::shortcuts(
@@ -430,6 +430,12 @@ impl tuirealm::Component<Message, NoUserEvent> for Widget<Browser<(PatchId, Patc
     }
 }
 
+impl tuirealm::Component<Message, NoUserEvent> for Widget<IssueBrowser> {
+    fn on(&mut self, _event: Event<NoUserEvent>) -> Option<Message> {
+        None
+    }
+}
+
 impl tuirealm::Component<Message, NoUserEvent> for Widget<PatchActivity> {
     fn on(&mut self, event: Event<NoUserEvent>) -> Option<Message> {
         match event {

radicle-tui/src/ui.rs

@@ -22,7 +22,7 @@ use widget::Widget;
 use self::cob::patch;
 use self::components::context::ContextBar;
 use self::components::list::{List, Table};
-use self::components::workspace::{Browser, PatchActivity, PatchFiles};
+use self::components::workspace::{Browser, IssueBrowser, PatchActivity, PatchFiles};
 use self::theme::Theme;
 
 pub fn global_listener() -> Widget<GlobalListener> {
@@ -121,6 +121,13 @@ pub fn table(theme: &theme::Theme, items: &[impl List], profile: &Profile) -> Wi
         .highlight(theme.colors.item_list_highlighted_bg)
 }
 
+pub fn issue_browser(theme: &theme::Theme) -> Widget<IssueBrowser> {
+    let not_implemented = label("not implemented").foreground(theme.colors.default_fg);
+    let browser = IssueBrowser::new(not_implemented);
+
+    Widget::new(browser)
+}
+
 pub fn patch_browser(
     theme: &theme::Theme,
     items: &[(PatchId, Patch)],

radicle-tui/src/ui/components/workspace.rs

@@ -44,6 +44,36 @@ impl<T: List> WidgetComponent for Browser<T> {
     }
 }
 
+pub struct IssueBrowser {
+    label: Widget<Label>,
+}
+impl IssueBrowser {
+    pub fn new(label: Widget<Label>) -> Self {
+        Self { label }
+    }
+}
+
+impl WidgetComponent for IssueBrowser {
+    fn view(&mut self, _properties: &Props, frame: &mut Frame, area: Rect) {
+        let label_w = self
+            .label
+            .query(Attribute::Width)
+            .unwrap_or(AttrValue::Size(1))
+            .unwrap_size();
+        let rect = layout::centered_label(label_w, area);
+
+        self.label.view(frame, rect);
+    }
+
+    fn state(&self) -> State {
+        State::None
+    }
+
+    fn perform(&mut self, _properties: &Props, _cmd: Cmd) -> CmdResult {
+        CmdResult::None
+    }
+}
+
 pub struct PatchActivity {
     label: Widget<Label>,
 }