Refactor trash handling to improve portability

src/trash.rs

@@ -0,0 +1,143 @@
+use cosmic::widget;
+use regex::Regex;
+use std::{collections::HashSet, path::PathBuf};
+
+use crate::{
+    config::IconSizes,
+    tab::{Item, SearchItem},
+};
+
+pub trait TrashExt {
+    fn is_empty() -> bool {
+        true
+    }
+
+    fn entries() -> usize {
+        0
+    }
+
+    fn folders() -> Result<HashSet<PathBuf>, trash::Error> {
+        Err(trash::Error::Unknown {
+            description: "reading trash folders not supported on this platform".into(),
+        })
+    }
+
+    fn scan(_sizes: IconSizes) -> Vec<Item> {
+        log::warn!("viewing trash not supported on this platform");
+        Vec::new()
+    }
+
+    fn scan_search<F: Fn(SearchItem) -> bool + Sync>(callback: F, regex: &Regex) {}
+
+    fn icon(icon_size: u16) -> widget::icon::Handle {
+        widget::icon::from_name(if Self::is_empty() {
+            "user-trash"
+        } else {
+            "user-trash-full"
+        })
+        .size(icon_size)
+        .handle()
+    }
+
+    fn icon_symbolic(icon_size: u16) -> widget::icon::Handle {
+        widget::icon::from_name(if Self::is_empty() {
+            "user-trash-symbolic"
+        } else {
+            "user-trash-full-symbolic"
+        })
+        .size(icon_size)
+        .handle()
+    }
+}
+
+pub struct Trash;
+
+// This config statement is from trash::os_limited
+#[cfg(any(
+    target_os = "windows",
+    all(
+        unix,
+        not(target_os = "macos"),
+        not(target_os = "ios"),
+        not(target_os = "android")
+    )
+))]
+impl TrashExt for Trash {
+    fn is_empty() -> bool {
+        trash::os_limited::is_empty().unwrap_or(true)
+    }
+
+    fn entries() -> usize {
+        match trash::os_limited::list() {
+            Ok(entries) => entries.len(),
+            Err(_err) => 0,
+        }
+    }
+
+    fn folders() -> Result<HashSet<PathBuf>, trash::Error> {
+        trash::os_limited::trash_folders()
+    }
+
+    fn scan(sizes: IconSizes) -> Vec<Item> {
+        use crate::{localize::LANGUAGE_SORTER, tab::item_from_trash_entry};
+        use std::cmp::Ordering;
+
+        let entries = match trash::os_limited::list() {
+            Ok(entry) => entry,
+            Err(err) => {
+                log::warn!("failed to read trash items: {err}");
+                return Vec::new();
+            }
+        };
+        let mut items: Vec<_> = entries
+            .into_iter()
+            .filter_map(|entry| {
+                let metadata = trash::os_limited::metadata(&entry)
+                    .inspect_err(|err| {
+                        log::warn!("failed to get metadata for trash item {entry:?}: {err}")
+                    })
+                    .ok()?;
+                Some(item_from_trash_entry(entry, metadata, sizes))
+            })
+            .collect();
+        items.sort_by(|a, b| match (a.metadata.is_dir(), b.metadata.is_dir()) {
+            (true, false) => Ordering::Less,
+            (false, true) => Ordering::Greater,
+            _ => LANGUAGE_SORTER.compare(&a.display_name, &b.display_name),
+        });
+        items
+    }
+
+    fn scan_search<F: Fn(SearchItem) -> bool + Sync>(callback: F, regex: &Regex) {
+        let entries = match trash::os_limited::list() {
+            Ok(entries) => entries,
+            Err(err) => {
+                log::warn!("failed to read trash items: {err}");
+                return;
+            }
+        };
+
+        for entry in entries {
+            if let Ok(metadata) = trash::os_limited::metadata(&entry).inspect_err(|err| {
+                log::warn!("failed to get metadata for trash item {entry:?}: {err}")
+            }) {
+                let name = entry.name.to_string_lossy();
+                if regex.is_match(&name) && !callback(SearchItem::Trash(entry, metadata)) {
+                    break;
+                }
+            }
+        }
+    }
+}
+
+// This config statement is from trash::os_limited, inverted
+#[cfg(not(any(
+    target_os = "windows",
+    all(
+        unix,
+        not(target_os = "macos"),
+        not(target_os = "ios"),
+        not(target_os = "android")
+    )
+)))]
+impl TrashExt for Trash {}