Allow for hiding notebooks from recent list (#1830)

lib/livebook/notebook_manager.ex

@@ -85,6 +85,14 @@ defmodule Livebook.NotebookManager do
     GenServer.cast(__MODULE__, {:add_starred_notebook, file, name})
   end
 
+  @doc """
+  Removes the given file from recent notebooks.
+  """
+  @spec remove_recent_notebook(FileSystem.File.t()) :: :ok
+  def remove_recent_notebook(file) do
+    GenServer.cast(__MODULE__, {:remove_recent_notebook, file})
+  end
+
   @doc """
   Removes the given file from starred notebooks.
   """
@@ -171,6 +179,13 @@ defmodule Livebook.NotebookManager do
     end
   end
 
+  def handle_cast({:remove_recent_notebook, file}, state = prev_state) do
+    recent_notebooks = Enum.reject(state.recent_notebooks, &(&1.file == file))
+    state = %{state | recent_notebooks: recent_notebooks}
+    broadcast_changes(state, prev_state)
+    {:noreply, state, {:continue, :dump_state}}
+  end
+
   def handle_cast({:remove_starred_notebook, file}, state = prev_state) do
     starred_notebooks = Enum.reject(state.starred_notebooks, &(&1.file == file))
     state = %{state | starred_notebooks: starred_notebooks}

lib/livebook/storage.ex

@@ -17,7 +17,7 @@ defmodule Livebook.Storage do
   @type namespace :: atom()
   @type entity_id :: binary()
   @type attribute :: atom()
-  @type value :: binary() | nil
+  @type value :: term()
   @type timestamp :: non_neg_integer()
   @type entity :: %{required(:id) => entity_id(), optional(attribute()) => value()}
 

lib/livebook_web/live/open_live.ex

@@ -113,7 +113,26 @@ defmodule LivebookWeb.OpenLive do
               notebook_infos={@recent_notebooks}
               sessions={@sessions}
               added_at_label="Opened"
-            />
+            >
+              <:card_icon :let={{_info, idx}}>
+                <span class="tooltip top" data-tooltip="Hide notebook">
+                  <button
+                    aria-label="hide notebook"
+                    phx-click={
+                      with_confirm(
+                        JS.push("hide_recent_notebook", value: %{idx: idx}),
+                        title: "Hide notebook",
+                        description: "The notebook will reappear here when you open it again.",
+                        confirm_text: "Hide",
+                        opt_out_id: "hide-notebook"
+                      )
+                    }
+                  >
+                    <.remix_icon icon="close-fill" class="text-gray-600 text-lg" />
+                  </button>
+                </span>
+              </:card_icon>
+            </.live_component>
           <% end %>
           <div class="mt-3 text-gray-600 text-sm">
             Looking for unsaved notebooks? <.link
@@ -174,6 +193,12 @@ defmodule LivebookWeb.OpenLive do
     {:noreply, create_session(socket)}
   end
 
+  def handle_event("hide_recent_notebook", %{"idx" => idx}, socket) do
+    %{file: file} = Enum.fetch!(socket.assigns.recent_notebooks, idx)
+    Livebook.NotebookManager.remove_recent_notebook(file)
+    {:noreply, socket}
+  end
+
   @impl true
   def handle_info({type, session} = event, socket)
       when type in [:session_created, :session_updated, :session_closed] and