Add batch selection and bulk operations to library view

src/ui/library_view.rs

@@ -1,6 +1,7 @@
 use adw::prelude::*;
 use gtk::accessible::Property as AccessibleProperty;
 use std::cell::{Cell, RefCell};
+use std::collections::HashSet;
 use std::rc::Rc;
 
 use crate::core::database::AppImageRecord;
@@ -36,6 +37,12 @@ pub struct LibraryView {
     list_button: gtk::ToggleButton,
     records: Rc<RefCell<Vec<AppImageRecord>>>,
     search_empty_page: adw::StatusPage,
+    // Batch selection
+    selection_mode: Rc<Cell<bool>>,
+    selected_ids: Rc<RefCell<HashSet<i64>>>,
+    _action_bar: gtk::ActionBar,
+    select_button: gtk::ToggleButton,
+    selection_label: gtk::Label,
 }
 
 impl LibraryView {
@@ -114,10 +121,18 @@ impl LibraryView {
         add_button.set_action_name(Some("win.show-drop-hint"));
         add_button.update_property(&[AccessibleProperty::Label("Add AppImage")]);
 
+        let select_button = gtk::ToggleButton::builder()
+            .icon_name("selection-mode-symbolic")
+            .tooltip_text(&i18n("Select multiple"))
+            .build();
+        select_button.add_css_class("flat");
+        select_button.update_property(&[AccessibleProperty::Label("Toggle selection mode")]);
+
         let header_bar = adw::HeaderBar::builder()
             .title_widget(&title_widget)
             .build();
         header_bar.pack_start(&add_button);
+        header_bar.pack_start(&select_button);
         header_bar.pack_end(&menu_button);
         header_bar.pack_end(&search_button);
         header_bar.pack_end(&view_toggle_box);
@@ -254,12 +269,42 @@ impl LibraryView {
             .build();
         stack.add_named(&list_scroll, Some("list"));
 
+        // --- Batch selection state ---
+        let selection_mode = Rc::new(Cell::new(false));
+        let selected_ids: Rc<RefCell<HashSet<i64>>> = Rc::new(RefCell::new(HashSet::new()));
+
+        // --- Bottom action bar (hidden until selection mode) ---
+        let action_bar = gtk::ActionBar::new();
+        action_bar.set_visible(false);
+
+        let selection_label = gtk::Label::builder()
+            .label("0 selected")
+            .build();
+        action_bar.set_center_widget(Some(&selection_label));
+
+        let integrate_btn = gtk::Button::builder()
+            .label(&i18n("Integrate"))
+            .tooltip_text(&i18n("Add selected to app menu"))
+            .build();
+        integrate_btn.add_css_class("suggested-action");
+        integrate_btn.set_action_name(Some("win.batch-integrate"));
+        action_bar.pack_start(&integrate_btn);
+
+        let delete_btn = gtk::Button::builder()
+            .label(&i18n("Delete"))
+            .tooltip_text(&i18n("Delete selected AppImages"))
+            .build();
+        delete_btn.add_css_class("destructive-action");
+        delete_btn.set_action_name(Some("win.batch-delete"));
+        action_bar.pack_end(&delete_btn);
+
         // --- Assemble toolbar view ---
         let content_box = gtk::Box::builder()
             .orientation(gtk::Orientation::Vertical)
             .build();
         content_box.append(&search_bar);
         content_box.append(&stack);
+        content_box.append(&action_bar);
 
         let toolbar_view = adw::ToolbarView::new();
         toolbar_view.add_top_bar(&header_bar);
@@ -394,6 +439,23 @@ impl LibraryView {
             });
         }
 
+        // --- Wire up selection mode toggle ---
+        {
+            let selection_mode_ref = selection_mode.clone();
+            let selected_ids_ref = selected_ids.clone();
+            let action_bar_ref = action_bar.clone();
+            let selection_label_ref = selection_label.clone();
+            select_button.connect_toggled(move |btn| {
+                let active = btn.is_active();
+                selection_mode_ref.set(active);
+                action_bar_ref.set_visible(active);
+                if !active {
+                    selected_ids_ref.borrow_mut().clear();
+                    selection_label_ref.set_label("0 selected");
+                }
+            });
+        }
+
         // --- Wire up empty state buttons ---
         scan_now_btn.set_action_name(Some("win.scan"));
         prefs_btn.set_action_name(Some("win.preferences"));
@@ -412,6 +474,11 @@ impl LibraryView {
             list_button,
             records,
             search_empty_page,
+            selection_mode,
+            selected_ids,
+            _action_bar: action_bar,
+            select_button,
+            selection_label,
         }
     }
 
@@ -590,6 +657,33 @@ impl LibraryView {
         }
     }
 
+    /// Get the set of currently selected record IDs.
+    pub fn selected_ids(&self) -> HashSet<i64> {
+        self.selected_ids.borrow().clone()
+    }
+
+    /// Toggle selection of a record ID (used by card click in selection mode).
+    pub fn toggle_selection(&self, id: i64) {
+        let mut ids = self.selected_ids.borrow_mut();
+        if ids.contains(&id) {
+            ids.remove(&id);
+        } else {
+            ids.insert(id);
+        }
+        let count = ids.len();
+        self.selection_label.set_label(&format!("{} selected", count));
+    }
+
+    /// Whether the library is in selection mode.
+    pub fn in_selection_mode(&self) -> bool {
+        self.selection_mode.get()
+    }
+
+    /// Exit selection mode.
+    pub fn exit_selection_mode(&self) {
+        self.select_button.set_active(false);
+    }
+
     /// Programmatically set the view mode by toggling the linked buttons.
     pub fn set_view_mode(&self, mode: ViewMode) {
         match mode {