feat(core): load parent's children

src/core/tab/tab.zig

@@ -64,6 +64,7 @@ pub const Tab = struct {
 
         //TODO: Proper error handling
         std.Thread.Pool.spawn(self.threadPool, loadItemsWrapper, .{ self, newLocationContainer }) catch unreachable;
+        std.Thread.Pool.spawn(self.threadPool, loadParentItemsWrapper, .{ self, newLocationContainer }) catch unreachable;
     }
 
     pub fn selectItem(self: *Tab, requested_selected: models.FullName) !void {
@@ -171,73 +172,33 @@ pub const Tab = struct {
     }
 
     fn loadItemsWrapper(self: *Tab, location: *Container) void {
-        loadItems(self, location) catch return;
+        loadItems(*Tab, self, location, &self.currentItems, updateCurrentItemCallback, self.allocator) catch {};
     }
-    fn loadItems(self: *Tab, location: *Container) !void {
+    fn updateCurrentItemCallback(self: *Tab) void {
-        {
-            self.currentItems.mutex.lock();
-            defer self.currentItems.mutex.unlock();
-
-            const data = self.currentItems.data;
-            self.currentItems.data = null;
-            if (data) |currentItems| {
-                for (currentItems.items) |*item| {
-                    if (item.releaseUnwrap()) |i| i.deinit();
-                }
-                currentItems.deinit();
-            }
-        }
-
-        {
-            self.currentItems.mutex.lock();
-            defer self.currentItems.mutex.unlock();
-
-            self.currentItems.data = std.ArrayList(Arc(*Item)).init(self.allocator);
-        }
-        errdefer {
-            self.currentItems.data.?.deinit();
-            self.currentItems.data = null;
-        }
-
-        //TODO: add async
-        //NOTE: also we should
-        var processed_number: usize = 0;
-        while (true) {
-            std.Thread.sleep(100 * std.time.ns_per_ms);
-
-            location.children.mutex.lock();
-            defer location.children.mutex.unlock();
-
-            std.debug.assert(processed_number <= location.children.data.items.len);
-
-            if (!location.childrenLoading and processed_number == location.children.data.items.len) break;
-            if (processed_number == location.children.data.items.len) continue;
-
-            defer processed_number = location.children.data.items.len;
-            for (location.children.data.items[processed_number..]) |item_fullname| {
-                const resolvedItem = location.item.provider.getItemByFullName(item_fullname, &.{ .skipChildInit = true }, self.allocator) catch |e| {
-                    //TODO: save error to container errors
-                    std.debug.print("error {} {s}\r\n", .{ e, item_fullname.path });
-                    continue;
-                };
-
-                self.currentItems.mutex.lock();
-                defer self.currentItems.mutex.unlock();
-
-                const insertIndex = for (self.currentItems.data.?.items, 0..) |*item, i| {
-                    if (order.orderByDisplayName(resolvedItem, item.value.*) == .lt) break i;
-                } else null;
-
-                const arc = try Arc(*Item).init(self.allocator, resolvedItem);
-                if (insertIndex) |i| {
-                    try self.currentItems.data.?.insert(i, arc);
-                } else {
-                    try self.currentItems.data.?.append(arc);
-                }
-
         self.updateCurrentItem() catch {};
     }
-        }
+
+    fn loadParentItemsWrapper(self: *Tab, location: *Container) void {
+        const parentAbsolutePath = location.item.parent orelse return;
+        var arena = std.heap.ArenaAllocator.init(self.allocator);
+        defer arena.deinit();
+        const allocator = arena.allocator();
+
+        const parentFullName = models.FullName{
+            .path = allocator.dupe(u8, parentAbsolutePath.path.path) catch return,
+        };
+
+        const resolvedParent = location.item.provider.getItemByFullName(parentFullName, &.{ .skipChildInit = true }, allocator) catch |e| {
+            std.debug.print("error {} {s}\r\n", .{ e, parentFullName.path });
+            return;
+        };
+        const parentContainer = switch (resolvedParent.item) {
+            .container => |c| c,
+            else => return,
+        };
+        loadItems(*Tab, self, parentContainer, &self.currentParentItems, (struct {
+            fn a(_: *Tab) void {}
+        }).a, self.allocator) catch {};
     }
 
     pub fn deinit(self: *Tab) void {
@@ -276,6 +237,79 @@ pub const Tab = struct {
     }
 };
 
+fn loadItems(
+    comptime T: type,
+    ctx: T,
+    location: *Container,
+    sourceItems: *locked(?std.ArrayList(Arc(*Item))),
+    itemLoadedCallback: *const fn (T) void,
+    allocator: std.mem.Allocator,
+) !void {
+    {
+        sourceItems.mutex.lock();
+        defer sourceItems.mutex.unlock();
+
+        const data = sourceItems.data;
+        sourceItems.data = null;
+        if (data) |currentItems| {
+            for (currentItems.items) |*item| {
+                if (item.releaseUnwrap()) |i| i.deinit();
+            }
+            currentItems.deinit();
+        }
+    }
+
+    {
+        sourceItems.mutex.lock();
+        defer sourceItems.mutex.unlock();
+
+        sourceItems.data = std.ArrayList(Arc(*Item)).init(allocator);
+    }
+    errdefer {
+        sourceItems.data.?.deinit();
+        sourceItems.data = null;
+    }
+
+    //TODO: add async
+    var processed_number: usize = 0;
+    while (true) {
+        std.Thread.sleep(100 * std.time.ns_per_ms);
+
+        location.children.mutex.lock();
+        defer location.children.mutex.unlock();
+
+        std.debug.assert(processed_number <= location.children.data.items.len);
+
+        if (!location.childrenLoading and processed_number == location.children.data.items.len) break;
+        if (processed_number == location.children.data.items.len) continue;
+
+        defer processed_number = location.children.data.items.len;
+        for (location.children.data.items[processed_number..]) |item_fullname| {
+            const resolvedItem = location.item.provider.getItemByFullName(item_fullname, &.{ .skipChildInit = true }, allocator) catch |e| {
+                //TODO: save error to container errors
+                std.debug.print("error {} {s}\r\n", .{ e, item_fullname.path });
+                continue;
+            };
+
+            sourceItems.mutex.lock();
+            defer sourceItems.mutex.unlock();
+
+            const insertIndex = for (sourceItems.data.?.items, 0..) |*item, i| {
+                if (order.orderByDisplayName(resolvedItem, item.value.*) == .lt) break i;
+            } else null;
+
+            const arc = try Arc(*Item).init(allocator, resolvedItem);
+            if (insertIndex) |i| {
+                try sourceItems.data.?.insert(i, arc);
+            } else {
+                try sourceItems.data.?.append(arc);
+            }
+
+            itemLoadedCallback(ctx);
+        }
+    }
+}
+
 const std = @import("std");
 const assert = std.debug.assert;
 const Mutex = std.Thread.Mutex;