desktop: Add a way to clear recently played files

desktop/assets/texts/en-US/preferences_dialog.ftl

@@ -23,3 +23,4 @@ storage-backend-disk = Disk
 storage-backend-memory = Memory
 
 recent-limit = Recent Limit
+recent-clear = Clear

desktop/src/gui/dialogs/preferences_dialog.rs

@@ -324,6 +324,7 @@ impl PreferencesDialog {
     fn show_misc_preferences(&mut self, locale: &LanguageIdentifier, ui: &mut Ui) {
         ui.label(text(locale, "recent-limit"));
 
+        ui.horizontal(|ui| {
             let previous = self.recent_limit;
             DragValue::new(&mut self.recent_limit).ui(ui);
 
@@ -331,6 +332,15 @@ impl PreferencesDialog {
                 self.recent_limit_changed = true;
             }
 
+            if ui.button(text(locale, "recent-clear")).clicked() {
+                if let Err(e) = self.preferences.write_recents(|writer| {
+                    writer.clear();
+                }) {
+                    tracing::warn!("Couldn't update recents: {e}");
+                }
+            }
+        });
+
         ui.end_row()
     }
 

frontend-utils/src/recents/write.rs

@@ -1,7 +1,7 @@
 use crate::parse::DocumentHolder;
 use crate::recents::{Recent, Recents};
 use crate::write::TableExt;
-use toml_edit::{value, Table};
+use toml_edit::{value, ArrayOfTables, Table};
 
 pub struct RecentsWriter<'a>(&'a mut DocumentHolder<Recents>);
 
@@ -10,11 +10,23 @@ impl<'a> RecentsWriter<'a> {
         Self(recents)
     }
 
+    fn with_underlying_table(&mut self, fun: impl FnOnce(&mut Recents, &mut ArrayOfTables)) {
+        self.0.edit(|values, toml_document| {
+            let table = toml_document.get_or_create_array_of_tables("recent");
+            fun(values, table)
+        })
+    }
+
+    pub fn clear(&mut self) {
+        self.with_underlying_table(|values, array| {
+            array.clear();
+            values.clear();
+        });
+    }
+
     /// Pushes a new recent entry on the entry stack, if same entry already exists, it will get moved to the top.
     pub fn push(&mut self, recent: Recent, limit: usize) {
-        self.0.edit(|values, toml_document| {
-            let array = toml_document.get_or_create_array_of_tables("recent");
-
+        self.with_underlying_table(|values, array| {
             // First, lets check if we already have existing entry with the same URL and move it to the top.
             let existing = values.iter().position(|x| x.url == recent.url);
 
@@ -92,4 +104,9 @@ mod tests {
             url: Url::parse("file:///very_important_file.swf").unwrap(),
         }, 3), "[[recent]]\nurl = \"file:///2.swf\"\n[[recent]]\nurl = \"file:///3.swf\"\n\n[[recent]]\nurl = \"file:///very_important_file.swf\"\n");
     }
+
+    #[test]
+    fn clear() {
+        test("[[recent]]\nurl = \"file:///file_one.swf\"\n[[recent]]\nurl = \"file:///file_two.swf\"\n[[recent]]\nurl = \"file:///3.swf\"\n", |writer| writer.clear(), "");
+    }
 }