ChanViewer: Add a status bar to show loading status

Also update the window title with the current board after loading. :^)

Applications/ChanViewer/ThreadCatalogModel.cpp

@@ -32,12 +32,18 @@ void ThreadCatalogModel::update()
 
     auto* job = request.schedule();
 
+    if (on_load_started)
+        on_load_started();
+
     job->on_finish = [job, this](bool success) {
         auto* response = job->response();
         dbg() << "Catalog download finished, success=" << success << ", response=" << response;
 
-        if (!success)
+        if (!success) {
+            if (on_load_finished)
+                on_load_finished(false);
             return;
+        }
 
         dbg() << "Catalog payload size: " << response->payload().size();
 
@@ -61,6 +67,9 @@ void ThreadCatalogModel::update()
         }
 
         did_update();
+
+        if (on_load_finished)
+            on_load_finished(true);
     };
 }
 

Applications/ChanViewer/ThreadCatalogModel.h

@@ -25,8 +25,12 @@ public:
     virtual GVariant data(const GModelIndex&, Role = Role::Display) const override;
     virtual void update() override;
 
+    const String& board() const { return m_board; }
     void set_board(const String&);
 
+    Function<void()> on_load_started;
+    Function<void(bool success)> on_load_finished;
+
 private:
     ThreadCatalogModel();
 

Applications/ChanViewer/main.cpp

@@ -4,6 +4,7 @@
 #include <LibGUI/GApplication.h>
 #include <LibGUI/GBoxLayout.h>
 #include <LibGUI/GComboBox.h>
+#include <LibGUI/GStatusBar.h>
 #include <LibGUI/GTableView.h>
 #include <LibGUI/GWindow.h>
 
@@ -29,11 +30,25 @@ int main(int argc, char** argv)
 
     auto* catalog_view = new GTableView(widget);
     catalog_view->set_model(ThreadCatalogModel::create());
+    auto& catalog_model = *static_cast<ThreadCatalogModel*>(catalog_view->model());
+
+    auto* statusbar = new GStatusBar(widget);
 
     board_combo->on_change = [&] (auto&, const GModelIndex& index) {
         auto selected_board = board_combo->model()->data(index, GModel::Role::Custom);
         ASSERT(selected_board.is_string());
-        static_cast<ThreadCatalogModel*>(catalog_view->model())->set_board(selected_board.to_string());
+        catalog_model.set_board(selected_board.to_string());
+    };
+
+    catalog_model.on_load_started = [&] {
+        statusbar->set_text(String::format("Loading /%s/...", catalog_model.board().characters()));
+    };
+
+    catalog_model.on_load_finished = [&](bool success) {
+        statusbar->set_text(success ? "Load finished" : "Load failed");
+        if (success) {
+            window->set_title(String::format("/%s/ - ChanViewer", catalog_model.board().characters()));
+        }
     };
 
     window->show();