HAXY

▄ ▄▄▄▄▄ ▄ ▄▀ ▄▀▀▀▀▀▀ ▄ ▀▄ ▀▀▀▀▀▀▀▀ ▀▀ ▀▀▄ ▀▀▀▀▀▀▀▀ ▀▀▀ ▀▀▀▀ ▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀ ▀▄ ▀▀▀▀▀▀▀▀▀▄ ▀▀▀▀▀▀▀ ▀ ▀▀▀▀▀▀▀▀▀▀▄ ▄▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▄ ▄▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▄ ▀▀▀▀▀▀▀▀▀▀▀▀ ▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄ ▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▄ ▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▄▄▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▄ ▄▀▀▀▀▀▀▀▀ ▀▀▀▄ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀▄▄▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀ ▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▄▀▀▀▀▄ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀ ▀▀▀▀ ▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄ ▀▀▀▀▀▀▀▀▀▀▀▄▄▀▀▀▄▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▄ ▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▄▄▀▀▀▀▀▀▀▀▀▀ ▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀

╭─────────────╮ │scroll to top│ ╰─────────────╯ ╭ Undo.zig ─────────────────────────────────────────────────────╮ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ╰───────────────────────────────────────────────────────────────╯

╭────╮ ╭ clone ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ╮ │http│ ssh │ │ ╰────╯ ╰ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ╯

.. Attachment.zig Comment.zig Commits.zig Diff.zig Discussions.zig Events.zig Files.zig Header.zig Issues.zig Patches.zig Refs.zig ╭─────────────────────────────────╮ │Undo.zig │ ╰─────────────────────────────────╯

320 const day = seconds.getDaySeconds(); 321 const months = [_][]const u8{ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }; 322 return std.fmt.allocPrint(aa, "{s} {d}, {d}, {d:0>2}:{d:0>2}:{d:0>2} UTC", .{ months[month.month.numeric() - 1], month.day_index + 1, year.year, day.getHoursIntoDay(), day.getMinutesIntoHour(), day.getSecondsIntoMinute() }); 323 } 324 325 pub fn execute(io: std.Io, allocator: std.mem.Allocator, source: ui.RepoSource, index: u64) !void { 326 if (source.repo_kind != .xit) return error.NotFound; 327 var any_repo = try rp.AnyRepo(.xit, .{}).open(io, allocator, source.localInitOpts()); 328 defer any_repo.deinit(io, allocator); 329 switch (any_repo) { 330 inline else => |*repo| try repo.undo(io, index), 331 } 332 } 333 334 // discard every earlier transaction by compacting the database. the patch 335 // revisions events point at are unreachable from the refs, so they are named 336 // as extra roots to survive the collection. 337 pub fn clearHistory(io: std.Io, allocator: std.mem.Allocator, source: ui.RepoSource) !void { 338 if (source.repo_kind != .xit) return error.NotFound; 339 var any_repo = try rp.AnyRepo(.xit, .{}).open(io, allocator, source.localInitOpts()); 340 defer any_repo.deinit(io, allocator); 341 switch (any_repo) { 342 inline else => |*repo| { 343 const opts = repo.self_repo_opts; 344 // a repo that has consumed no events has no revisions to protect 345 const roots = if (evt.currentMoment(opts, repo)) |moment| 346 try evt.PatchRev.gcRoots(rp.Repo(.xit, opts).DB, opts.hash, allocator, moment) 347 else |_| 348 &.{}; 349 defer allocator.free(roots); 350 _ = try repo.garbageCollect(io, allocator, .{ .extra_roots = roots }); 351 }, 352 } 353 } 354 355 // keep action failures on the current tab without rebuilding a stale route. 356 pub fn handleRequest(allocator: std.mem.Allocator, session: *ui.Session, target: ui.RoutablePage.RepoUndoRoute) void { 357 perform(allocator, session, target) catch |err| { 358 session.data.undo_failure = @errorName(err); 359 return; 360 }; 361 session.data.undo_failure = null; 362 } 363 364 // both terminal hosts resolve and authorize the request afresh before opening 365 // the repository; the web handler uses its matching http authorization path. 366 pub fn perform(allocator: std.mem.Allocator, session: *ui.Session, target: ui.RoutablePage.RepoUndoRoute) !void { 367 const identity = target.name.slice(); 368 const index = if (target.clear) null else target.index orelse return error.InvalidHistoryIndex; 369 const source = try authorizedSource(session, identity) orelse return error.Forbidden; 370 const io = session.io orelse return error.NotFound; 371 if (index) |value| try execute(io, allocator, source, value) else try clearHistory(io, allocator, source); 372 try session.navigate(ui.RoutablePage.repoUndoRoute(identity, null) orelse return error.RouteTooLong); 373 } 374 375 // the repo an owner may act on, or null when they may not 376 fn authorizedSource(session: *ui.Session, identity: []const u8) !?ui.RepoSource { 377 if (try session.authorize(identity, .owner) == null) return null; 378 if (session.local) |local| return local; 379 const admin_repo = session.admin_repo orelse return error.NotFound; 380 const moment = try evt.currentMoment(evt.admin_repo_opts, admin_repo); 381 const pair = ui.RoutablePage.RepoIdentity.parse(identity) orelse return error.NotFound; 382 const found = try evt.Repo.readByOwnerAndName(evt.AdminDB, evt.admin_repo_opts.hash, moment, session.page_arena, pair.owner, pair.name) orelse return error.NotFound; 383 const hex = std.fmt.bytesToHex(found.event_id, .lower); 384 return .{ .path = try std.fs.path.join(session.page_arena.allocator(), &.{ session.repos_dir orelse return error.NotFound, &hex }), .repo_kind = .xit }; 385 } 386 387 pub const View = struct { 388 box: wgt.Box(ui.Widget), 389 data: *const Self, 390 session: *ui.Session, 391 detailed_index: ?usize = null, 392 shown_failure: ?[]const u8 = null, 393 394 const list_max_width = 20; 395 const detail_min_width = 40; 396 const header_index = 0; 397 const content_index = 1; 398 // the undo button and the timestamp; everything below them is rebuilt 399 const fixed_rows = 2; 400 401 pub fn init(allocator: std.mem.Allocator, data: *const Self, session: *ui.Session) !View { 402 var outer = try wgt.Box(ui.Widget).init(allocator, .{ .border_style = null, .direction = .vert }); 403 errdefer outer.deinit(allocator); 404 405 // the sub header carries the tab's only action 406 { 407 var header = try wgt.Box(ui.Widget).init(allocator, .{ .border_style = null, .direction = .horiz }); 408 errdefer header.deinit(allocator); 409 const route = ui.RoutablePage.repoUndoClearRoute(data.identity) orelse return error.RouteTooLong; 410 const link = try std.fmt.allocPrint(session.page_arena.allocator(), "a:{s}", .{try route.toUrl(session.page_arena)}); 411 try addText(allocator, &header, "clear undo history", link, .single); 412 header.getFocus().child_id = header.children.keys()[0]; 413 try outer.children.put(allocator, header.getFocus().id, .{ .widget = .{ .box = header }, .rect = null, .min_size = .{ .width = null, .height = 3 } }); 414 } 415 416 if (data.clear) { 417 var center = try initClearForm(allocator, data, session); 418 errdefer center.deinit(allocator); 419 try outer.children.put(allocator, center.getFocus().id, .{ .widget = .{ .center = center }, .rect = null, .min_size = null }); 420 outer.getFocus().child_id = outer.children.keys()[content_index]; 421 return .{ .box = outer, .data = data, .session = session }; 422 } 423 424 var box = try wgt.Box(ui.Widget).init(allocator, .{ .border_style = null, .direction = .horiz }); 425 errdefer box.deinit(allocator); 426 { 427 var scroll = blk: { 428 var rows = try wgt.Box(ui.Widget).init(allocator, .{ .border_style = null, .direction = .vert, .stretch = true }); 429 errdefer rows.deinit(allocator); 430 for (data.items) |item| { 431 try addText(allocator, &rows, item.action, item.link, .hidden); 432 // a transaction a later undo discarded says so on its border 433 if (item.undone) rows.children.values()[rows.children.count() - 1].widget.text_box.options.bottom_label = "(undone)"; 434 } 435 if (data.next) |next| { 436 const route = ui.RoutablePage.repoUndoRoute(data.identity, next) orelse return error.RouteTooLong; 437 try addText(allocator, &rows, "next →", try std.fmt.allocPrint(session.page_arena.allocator(), "a:{s}", .{try route.toUrl(session.page_arena)}), .hidden); 438 } 439 if (data.items.len == 0) try addText(allocator, &rows, "no undo history", null, .hidden); 440 rows.getFocus().child_id = rows.children.keys()[0]; 441 break :blk try wgt.Scroll(ui.Widget).init(allocator, .{ .box = rows }, .{ .direction = .vert, .web_native = !session.is_terminal, .fill = true }); 442 }; 443 errdefer scroll.deinit(allocator); 444 try box.children.put(allocator, scroll.getFocus().id, .{ .widget = .{ .scroll = scroll }, .rect = null, .min_size = .{ .width = list_max_width, .height = null }, .max_size = .{ .width = list_max_width, .height = null } }); 445 } 446 { 447 var scroll = blk: { 448 var details = try wgt.Box(ui.Widget).init(allocator, .{ .border_style = null, .direction = .vert }); 449 errdefer details.deinit(allocator); 450 if (data.items.len > 0) { 451 try addText(allocator, &details, "", null, .single); 452 try addLabeled(allocator, &details, " timestamp ", "", null); 453 details.getFocus().child_id = details.children.keys()[0]; 454 } 455 break :blk try wgt.Scroll(ui.Widget).init(allocator, .{ .box = details }, .{ .direction = .vert, .web_native = !session.is_terminal, .fill = true }); 456 }; 457 errdefer scroll.deinit(allocator); 458 scroll.getFocus().mode = .mouse; 459 try box.children.put(allocator, scroll.getFocus().id, .{ .widget = .{ .scroll = scroll }, .rect = null, .min_size = .{ .width = detail_min_width, .height = null } }); 460 } 461 box.getFocus().child_id = box.children.keys()[0]; 462 try outer.children.put(allocator, box.getFocus().id, .{ .widget = .{ .box = box }, .rect = null, .min_size = null }); 463 outer.getFocus().child_id = outer.children.keys()[content_index]; 464 return .{ .box = outer, .data = data, .session = session }; 465 } 466 467 // the same shape the thread views use to confirm a removal 468 fn initClearForm(allocator: std.mem.Allocator, data: *const Self, session: *ui.Session) !ui.widget.Center { 469 var box = try wgt.Box(ui.Widget).init(allocator, .{ .border_style = null, .rounded_corners = true, .direction = .vert }); 470 errdefer box.deinit(allocator); 471 const route = ui.RoutablePage.repoUndoClearRoute(data.identity) orelse return error.RouteTooLong; 472 box.getFocus().kind = .{ .custom = try std.fmt.allocPrint(session.page_arena.allocator(), "form:{s}", .{try route.toUrl(session.page_arena)}) }; 473 474 var prompt = try wgt.Text.init(allocator, "are you sure?"); 475 errdefer prompt.deinit(allocator); 476 try box.children.put(allocator, prompt.getFocus().id, .{ .widget = .{ .text = prompt }, .rect = null, .min_size = null }); 477 478 var button = try wgt.TextBox.init(allocator, "clear undo history", .{ .border_style = .single, .rounded_corners = true, .wrap_kind = .none }); 479 errdefer button.deinit(allocator); 480 button.getFocus().mode = .all; 481 button.getFocus().kind = if (data.can_undo) .{ .custom = "submit" } else .text_box; 482 try box.children.put(allocator, button.getFocus().id, .{ .widget = .{ .text_box = button }, .rect = null, .min_size = null }); 483 box.getFocus().child_id = button.getFocus().id; 484 485 return ui.widget.Center.init(allocator, .{ .box = box }); 486 } 487 488 fn addText(allocator: std.mem.Allocator, box: *wgt.Box(ui.Widget), text: []const u8, link: ?[]const u8, border: wgt.BorderStyle) !void { 489 var row = try wgt.TextBox.init(allocator, text, .{ .border_style = border, .rounded_corners = true, .wrap_kind = .word }); 490 errdefer row.deinit(allocator); 491 row.getFocus().mode = .all; 492 if (link) |value| row.getFocus().kind = .{ .custom = value }; 493 try box.children.put(allocator, row.getFocus().id, .{ .widget = .{ .text_box = row }, .rect = null, .min_size = null }); 494 } 495 496 // a labeled row below the timestamp, added as the selected action needs it 497 fn addLabeled(allocator: std.mem.Allocator, box: *wgt.Box(ui.Widget), label: []const u8, text: []const u8, link: ?[]const u8) !void { 498 try addText(allocator, box, text, link, .single); 499 box.children.values()[box.children.count() - 1].widget.text_box.options.label = label; 500 } 501 502 // enter counts only on the focused button; a click counts anywhere on it 503 fn activated(root_focus: *Focus, button_id: usize, key: Key) bool { 504 return switch (key) { 505 .enter => root_focus.grandchild_id == button_id, 506 .mouse => |mouse| inp.leftClickOn(root_focus, button_id, mouse), 507 else => false, 508 }; 509 } 510 511 // the terminal hosts run the action after rendering; the web renderer 512 // posts the form instead, and wasm has no repository to act on 513 fn requestUndo(self: *View, route: ui.RoutablePage) void { 514 if (builtin.target.cpu.arch == .wasm32) return; 515 if (!self.session.is_terminal or self.session.host_request != null) return; 516 self.session.host_request = .{ .undo = route.repo_undo }; 517 } 518 519 fn headerBox(self: *View) *wgt.Box(ui.Widget) { 520 return &self.box.children.values()[header_index].widget.box; 521 } 522 fn headerActive(self: *View) bool { 523 return self.box.getFocus().child_id == self.headerBox().getFocus().id; 524 } 525 fn contentBox(self: *View) *wgt.Box(ui.Widget) { 526 return &self.box.children.values()[content_index].widget.box; 527 } 528 fn listScroll(self: *View) *wgt.Scroll(ui.Widget) { 529 return &self.contentBox().children.values()[0].widget.scroll; 530 } 531 fn detailScroll(self: *View) *wgt.Scroll(ui.Widget) { 532 return &self.contentBox().children.values()[1].widget.scroll; 533 } 534 fn selected(self: *View) ?usize { 535 const rows = &self.listScroll().child.box; 536 const index = rows.children.getIndex(rows.getFocus().child_id orelse return null) orelse return null; 537 return if (index < self.data.items.len) index else null; 538 } 539 fn detailActive(self: *View) bool { 540 return self.contentBox().getFocus().child_id == self.detailScroll().getFocus().id; 541 } 542 543 fn refreshDetail(self: *View, allocator: std.mem.Allocator) !void { 544 const index = self.selected() orelse return; 545 const failure = self.session.data.undo_failure orelse self.data.failure; 546 if (self.detailed_index == index and std.meta.eql(self.shown_failure, failure)) return; 547 const details = &self.detailScroll().child.box; 548 while (details.children.count() > fixed_rows) { 549 var entry = details.children.pop() orelse break; 550 entry.value.widget.deinit(allocator); 551 } 552 const item = self.data.items[index]; 553 const enabled = self.data.can_undo and item.index > 0; 554 555 // the fixed rows are filled first, since adding the ones below 556 // invalidates every pointer into the box 557 { 558 const button = &details.children.values()[0].widget.text_box; 559 try button.setContent(allocator, if (item.index == 0) "initial state cannot be undone" else if (item.index == self.data.count - 1) "undo this" else "undo this and all above it"); 560 button.getFocus().kind = if (enabled) .{ .custom = "submit" } else .text_box; 561 } 562 try details.children.values()[1].widget.text_box.setContent(allocator, item.timestamp); 563 564 // some actions put buttons where the description would go 565 if (item.buttons.len == 0) { 566 try addLabeled(allocator, details, " description ", item.description, null); 567 } else for (item.buttons) |detail_button| { 568 try addLabeled(allocator, details, detail_button.label, detail_button.text, detail_button.link); 569 } 570 if (failure) |message| try addText(allocator, details, try std.fmt.allocPrint(self.session.page_arena.allocator(), "error: {s}", .{message}), null, .single); 571 self.shown_failure = failure; 572 details.getFocus().kind = if (enabled) .{ .custom = item.form } else .container; 573 details.getFocus().child_id = details.children.keys()[0]; 574 self.detailScroll().x = 0; 575 self.detailScroll().y = 0; 576 self.detailScroll().getFocus().version +%= 1; 577 self.detailed_index = index; 578 } 579 580 pub fn build(self: *View, allocator: std.mem.Allocator, constraint: layout.Constraint, root_focus: *Focus) !void { 581 self.clearGrid(); 582 if (self.data.clear) return try self.box.build(allocator, constraint, root_focus); 583 try self.refreshDetail(allocator); 584 const rows = &self.listScroll().child.box; 585 if (self.data.items.len == 0) { 586 const failure = self.session.data.undo_failure orelse self.data.failure; 587 if (!std.meta.eql(self.shown_failure, failure)) { 588 const message = if (failure) |name| try std.fmt.allocPrint(self.session.page_arena.allocator(), "error: {s}", .{name}) else "no undo history"; 589 try rows.children.values()[0].widget.text_box.setContent(allocator, message); 590 self.shown_failure = failure; 591 } 592 } 593 for (rows.children.keys(), rows.children.values()) |id, *child| child.widget.text_box.options.border_style = if (rows.getFocus().child_id == id) .single else .hidden; 594 const both_fit = if (constraint.max_size.width) |width| width >= list_max_width + detail_min_width else true; 595 self.contentBox().children.values()[0].max_size = if (both_fit) .{ .width = list_max_width, .height = null } else null; 596 const width = if (constraint.max_size.width) |value| if (both_fit) value - list_max_width else value else detail_min_width; 597 self.contentBox().children.values()[1].min_size = .{ .width = width, .height = null }; 598 for (self.detailScroll().child.box.children.values()) |*child| child.max_size = .{ .width = width -| 2, .height = null }; 599 try self.box.build(allocator, constraint, root_focus); 600 } 601 602 pub fn input(self: *View, allocator: std.mem.Allocator, key: Key, root_focus: *Focus) !void { 603 // the sub header sits above whichever content the route selects. 604 // scrolling crosses the boundary the same way the arrow keys do 605 const direction = inp.vertDirection(key); 606 if (self.headerActive()) { 607 if (direction == .down) root_focus.setFocus(self.box.children.values()[content_index].widget.getFocus().id); 608 return; 609 } 610 if (self.data.clear) { 611 if (direction == .up) root_focus.setFocus(self.headerBox().getFocus().id) else try self.clearInput(key, root_focus); 612 return; 613 } 614 if (direction == .up and self.contentAtTop()) { 615 root_focus.setFocus(self.headerBox().getFocus().id); 616 return; 617 } 618 try self.refreshDetail(allocator); 619 if (self.detailActive()) { 620 const details = &self.detailScroll().child.box; 621 if (self.selected()) |index| { 622 if (activated(root_focus, details.children.keys()[0], key) and self.data.can_undo and self.data.items[index].index > 0) { 623 self.requestUndo(ui.RoutablePage.repoUndoRoute(self.data.identity, self.data.items[index].index) orelse return error.RouteTooLong); 624 return; 625 } 626 } 627 if (key == .arrow_left) root_focus.setFocus(self.listScroll().getFocus().id) else if (inp.rowDelta(key, @intCast(details.children.count()))) |delta| ui.widget.moveRowFocus(details, self.detailScroll(), root_focus, delta); 628 } else if (inp.rowDelta(key, @intCast(self.listScroll().child.box.children.count()))) |delta| { 629 ui.widget.moveRowFocus(&self.listScroll().child.box, self.listScroll(), root_focus, delta); 630 } else switch (key) { 631 .arrow_right, .enter => if (self.selected() != null) { 632 root_focus.setFocus(self.detailScroll().getFocus().id); 633 }, 634 else => {}, 635 } 636 } 637 638 // the confirm button submits the form the web renderer posts 639 fn clearInput(self: *View, key: Key, root_focus: *Focus) !void { 640 const center = &self.box.children.values()[content_index].widget.center; 641 const button_id = center.child.box.getFocus().child_id orelse return; 642 if (!activated(root_focus, button_id, key) or !self.data.can_undo) return; 643 self.requestUndo(ui.RoutablePage.repoUndoClearRoute(self.data.identity) orelse return error.RouteTooLong); 644 } 645 646 fn contentAtTop(self: *View) bool { 647 const scroll = if (self.detailActive()) self.detailScroll() else self.listScroll(); 648 const rows = &scroll.child.box; 649 const id = rows.getFocus().child_id orelse return true; 650 return rows.children.getIndex(id) == 0 and scroll.y == 0; 651 } 652 653 // moving up from the sub header returns to the page's tabs 654 pub fn atTop(self: *View) bool { 655 return self.headerActive(); 656 } 657 658 // arriving from the page's tabs lands on the sub header, not the content 659 pub fn focusHeader(self: *View, root_focus: *Focus) bool { 660 root_focus.setFocus(self.headerBox().getFocus().id); 661 return true; 662 } 663 pub fn deinit(self: *View, allocator: std.mem.Allocator) void { 664 self.box.deinit(allocator); 665 } 666 pub fn clearGrid(self: *View) void { 667 self.box.clearGrid(); 668 } 669 pub fn getGrid(self: View) ?Grid { 670 return self.box.getGrid(); 671 } 672 pub fn getFocus(self: *View) *Focus { 673 return self.box.getFocus(); 674 } 675 }; 676