implement deletion of playlists

closes #11

src/ui/playlists.rs

@@ -2,14 +2,17 @@ use std::sync::Arc;
 
 use cursive::traits::Identifiable;
 use cursive::view::ViewWrapper;
-use cursive::views::IdView;
+use cursive::views::{Dialog, IdView};
+use cursive::Cursive;
 
 use playlists::{Playlist, Playlists};
 use queue::Queue;
 use ui::listview::ListView;
+use ui::modal::Modal;
 
 pub struct PlaylistView {
     list: IdView<ListView<Playlist>>,
+    playlists: Playlists,
 }
 
 pub const LIST_ID: &str = "playlist_list";
@@ -17,7 +20,32 @@ impl PlaylistView {
     pub fn new(playlists: &Playlists, queue: Arc<Queue>) -> PlaylistView {
         let list = ListView::new(playlists.store.clone(), queue).with_id(LIST_ID);
 
-        PlaylistView { list }
+        PlaylistView {
+            list,
+            playlists: playlists.clone(),
+        }
+    }
+
+    pub fn delete_dialog(&mut self) -> Option<Modal<Dialog>> {
+        let list = self.list.get_mut();
+        let store = self.playlists.items();
+        let current = store.get(list.get_selected_index());
+
+        if let Some(playlist) = current {
+            let playlists = self.playlists.clone();
+            let id = playlist.meta.id.clone();
+            let dialog = Dialog::text("Are you sure you want to delete this playlist?")
+                .padding((1, 1, 1, 0))
+                .title("Delete playlist")
+                .dismiss_button("No")
+                .button("Yes", move |s: &mut Cursive| {
+                    playlists.delete_playlist(&id);
+                    s.pop_layer();
+                });
+            Some(Modal::new(dialog))
+        } else {
+            None
+        }
     }
 }