feat: multiple selection preview page

src/app.rs

@@ -61,7 +61,6 @@ use trash::TrashItem;
 #[cfg(feature = "wayland")]
 use wayland_client::{protocol::wl_output::WlOutput, Proxy};
 
-use crate::operation::{OperationError, OperationErrorType};
 use crate::{
     clipboard::{ClipboardCopy, ClipboardKind, ClipboardPaste},
     config::{AppTheme, Config, DesktopConfig, Favorite, IconSizes, TabConfig},
@@ -74,6 +73,10 @@ use crate::{
     spawn_detached::spawn_detached,
     tab::{self, HeadingOptions, ItemMetadata, Location, Tab, HOVER_DURATION},
 };
+use crate::{
+    operation::{OperationError, OperationErrorType},
+    tab::Item,
+};
 
 #[derive(Clone, Debug)]
 pub enum Mode {
@@ -1488,16 +1491,21 @@ impl App {
             PreviewKind::Selected => {
                 if let Some(tab) = self.tab_model.data::<Tab>(entity) {
                     if let Some(items) = tab.items_opt() {
-                        for item in items.iter() {
-                            if item.selected {
-                                children.push(item.preview_view(
-                                    Some(&self.mime_app_cache),
-                                    tab.config.icon_sizes,
-                                    military_time,
-                                ));
-                                // Only show one property view to avoid issues like hangs when generating
-                                // preview images on thousands of files
-                                break;
+                        let items_selected = items.iter().filter(|v| v.selected).count();
+                        if items_selected > 1 {
+                            children.push(Item::preview_view_multiple(items))
+                        } else {
+                            for item in items.iter() {
+                                if item.selected {
+                                    children.push(item.preview_view(
+                                        Some(&self.mime_app_cache),
+                                        tab.config.icon_sizes,
+                                        military_time,
+                                    ));
+                                    // Only show one property view to avoid issues like hangs when generating
+                                    // preview images on thousands of files
+                                    break;
+                                }
                             }
                         }
                         if children.is_empty() {

src/tab.rs

@@ -1518,6 +1518,51 @@ impl Item {
         row
     }
 
+    pub fn preview_view_multiple<'a>(items: &[Item]) -> Element<'a, Message> {
+        let cosmic_theme::Spacing { space_m, .. } = theme::active().cosmic().spacing;
+        let mut column = widget::column().spacing(space_m);
+
+        let items_selected: Vec<&Item> = items.iter().filter(|v| v.selected).collect();
+        let (dirs_selected, files_selected) =
+            items_selected
+                .iter()
+                .fold((0u32, 0u32), |(dirs, files), &v| match &v.metadata {
+                    ItemMetadata::Path { metadata, .. } => {
+                        if metadata.is_dir() {
+                            (dirs + 1, files)
+                        } else {
+                            (dirs, files + 1)
+                        }
+                    }
+                    _ => (dirs, files),
+                });
+
+        let dirs_text = if dirs_selected == 1 {
+            "folder"
+        } else {
+            "folders"
+        };
+        let files_text = if files_selected == 1 { "file" } else { "files" };
+        let text: String;
+
+        if dirs_selected >= 1 && files_selected >= 1 {
+            text = format!(
+                "{} {}, {} {} selected",
+                dirs_selected, dirs_text, files_selected, files_text
+            );
+        } else if dirs_selected >= 1 && files_selected == 0 {
+            text = format!("{} {} selected", dirs_selected, dirs_text);
+        } else if dirs_selected == 0 && files_selected >= 1 {
+            text = format!("{} {} selected", files_selected, files_text);
+        } else {
+            log::error!("folder or a file should have been selected.");
+            text = String::new(); // do not crash if we somehow reach here.
+        }
+
+        column = column.push(widget::text::heading(text));
+        column.into()
+    }
+
     pub fn preview_view<'a>(
         &'a self,
         mime_app_cache_opt: Option<&'a mime_app::MimeAppCache>,