basic add column impl

Signed-off-by: kernelkind <kernelkind@gmail.com>

src/ui/add_column.rs

@@ -0,0 +1,43 @@
+use egui::{RichText, Ui};
+use nostrdb::FilterBuilder;
+
+use crate::{app_style::NotedeckTextStyle, timeline::Timeline, user_account::UserAccount};
+
+pub enum AddColumnResponse {
+    Timeline(Timeline),
+}
+
+pub struct AddColumnView<'a> {
+    cur_account: Option<&'a UserAccount>,
+}
+
+impl<'a> AddColumnView<'a> {
+    pub fn new(cur_account: Option<&'a UserAccount>) -> Self {
+        Self { cur_account }
+    }
+
+    pub fn ui(&mut self, ui: &mut Ui) -> Option<AddColumnResponse> {
+        ui.label(RichText::new("Add column").text_style(NotedeckTextStyle::Heading.text_style()));
+
+        if ui.button("create global timeline").clicked() {
+            Some(AddColumnResponse::Timeline(create_global_timeline()))
+        } else {
+            None
+        }
+    }
+}
+
+fn create_global_timeline() -> Timeline {
+    let filter = FilterBuilder::new().kinds([1]).build();
+    Timeline::new(
+        crate::timeline::TimelineKind::Generic,
+        crate::filter::FilterState::Ready(vec![filter]),
+    )
+}
+
+// struct ColumnOption {
+//     title: &'static str,
+//     description: &'static str,
+//     icon: Box::<dyn Widget>,
+//     route: Route,
+// }