╭─────────────╮ │scroll to top│ ╰─────────────╯ ╭ ui.zig ───────────────────────────────────────────────────────╮ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ╰───────────────────────────────────────────────────────────────╯
🬐 🬠 🬞🬂🬏 🬟 🬑 🬟 🬑 ╭bc397808..╮ bc397808.. see-em: 🬋🬋🬋 🬋🬋🬋 🬋 🬋 │files │ commits refs discuss issues new login 🬐 🬠 🬐 🬠 🬑 🬟 🬰 ╰──────────╯ (449) user
╭────╮ ╭ clone ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ╮ │http│ ssh │ │ ╰────╯ ╰ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ╯
.. embed/ event/ test/ ui/ command.zig diff3.zig event.zig fork.zig lib.zig main.zig main_wasm.zig patch.zig serve.zig serve_common.zig serve_http.zig serve_ssh.zig serve_ssh_protocol.zig test.zig testnet.zig try.zig ╭─────────────────────────────────╮ │ui.zig │ ╰─────────────────────────────────╯ web.zig
1597 inline else => |*repo| (try repo.readRef(io, .{ .kind = .head, .name = branch })) != null, 1598 }; 1599 }, 1600 }; 1601 } 1602 }; 1603 1604 // events created in local mode have no account behind them, so the commit 1605 // author comes from the repo's config, which the global config feeds into. 1606 pub const local_author_fallback = evt.CommitAuthor{ .name = "haxy", .email = "user@haxy" }; 1607 1608 pub fn localAuthor( 1609 src: RepoSource, 1610 io: std.Io, 1611 allocator: std.mem.Allocator, 1612 arena: *std.heap.ArenaAllocator, 1613 ) !evt.CommitAuthor { 1614 switch (src.repo_kind) { 1615 inline else => |repo_kind| { 1616 var any_repo = rp.AnyRepo(repo_kind, .{}).open(io, allocator, src.localInitOpts()) catch return local_author_fallback; 1617 defer any_repo.deinit(io, allocator); 1618 1619 switch (any_repo) { 1620 inline else => |*repo| { 1621 var config = try repo.listConfig(io, allocator); 1622 defer config.deinit(); 1623 1624 const user = config.sections.get("user") orelse return local_author_fallback; 1625 const name = user.get("name") orelse return local_author_fallback; 1626 const email = user.get("email") orelse return local_author_fallback; 1627 return .{ 1628 .name = try arena.allocator().dupe(u8, name), 1629 .email = try arena.allocator().dupe(u8, email), 1630 }; 1631 }, 1632 } 1633 }, 1634 } 1635 } 1636 1637 // per-connection mutable state. each SSH session / web session / local TUI 1638 // run gets its own. 1639 pub const Session = struct { 1640 data: Data = .{}, 1641 // session-lifetime allocations: login/user_id, persisted prefs, queued 1642 // actions. lives as long as the connection. 1643 arena: *std.heap.ArenaAllocator, 1644 // current page's allocations: page data and the page-scoped strings widgets 1645 // build (form actions, links). owned by Nav, swapped on each navigation, so 1646 // it doesn't accumulate over a long-lived session. on the web/wasm paths, 1647 // where a render is one-shot, this points at the same arena as `arena`. 1648 page_arena: *std.heap.ArenaAllocator, 1649 haxy_moment: ?evt.AdminDB.HashMap(.read_only) = null, // db cursor (null on the wasm side) 1650 // filesystem io and the path to <server>/repos, for opening on-disk repos 1651 // during page construction. both null on wasm, which has no filesystem and 1652 // rebuilds pages from the serialized snapshot rather than from disk. 1653 io: ?std.Io = null, 1654 admin_repo: ?*rp.Repo(.xit, evt.admin_repo_opts) = null, 1655 repos_dir: ?[]const u8 = null, 1656 // the single on-disk repo this session views, when running in local mode 1657 // (haxy invoked with no arguments inside a repo). null on the server paths, 1658 // which resolve repos from the admin db instead. 1659 local: ?RepoSource = null, 1660 pending: std.ArrayList(Action) = .empty, // actions queued by widgets this frame 1661 // focus id -> the live TextInput, refreshed each frame by the views that own 1662 // inputs. web/wasm form handling looks widgets up here by focus id. 1663 text_inputs: std.AutoHashMapUnmanaged(usize, *wgt.TextInput) = .empty, 1664 back: enum { unavailable, available, requested } = .unavailable, 1665 refresh_requested: bool = false, // set by input (ctrl+r) 1666 // a requested forward navigation. set this (via navigate) to move to a new 1667 // page; Nav.sync builds it and then copies it into current_page, clearing 1668 // this back to null. setting current_page directly only updates the url and 1669 // does not navigate. 1670 next_page: ?RoutablePage = null, 1671 is_terminal: bool = false, // true on remote SSH and local TUI 1672 // port the web UI is served on, for the TUI/SSH footer's "http://localhost:<port>..." 1673 // url. null on the web itself (no footer there). 1674 web_port: ?u16 = null, 1675 // a host operation requested by a widget 1676 host_request: ?HostRequest = null, 1677 quit_requested: bool = false, 1678 1679 pub const HostRequest = union(enum) { 1680 show_copyable_text: []const u8, 1681 sync_events, 1682 }; 1683 1684 pub const FormFeedback = union(enum) { 1685 pub const LoginFailure = enum { unknown_user, wrong_password }; 1686 pub const ThreadFailure = enum { required_title }; 1687 pub const PatchFailure = enum { required_title, invalid_target_branch }; 1688 1689 login: struct { 1690 failure: LoginFailure, 1691 username: []const u8, 1692 }, 1693 issue: struct { 1694 failure: ThreadFailure, 1695 fields: ?struct { 1696 title: []const u8, 1697 tags: []const u8, 1698 description: []const u8, 1699 } = null, 1700 }, 1701 patch: struct { 1702 failure: PatchFailure, 1703 fields: ?struct { 1704 title: []const u8, 1705 tags: []const u8, 1706 description: []const u8, 1707 target_branch: []const u8, 1708 } = null, 1709 }, 1710 discussion: struct { 1711 failure: ThreadFailure, 1712 fields: ?struct { 1713 title: []const u8, 1714 tags: []const u8, 1715 description: []const u8, 1716 } = null, 1717 }, 1718 }; 1719 1720 const Self = @This(); 1721 1722 // serializable data sent down to web client 1723 pub const Data = struct { 1724 user_id: ?[]const u8 = null, 1725 // the logged-in user's name, for the views that show it 1726 user_name: ?[]const u8 = null, 1727 // a failed form retained long enough to render it for correction 1728 form_feedback: ?FormFeedback = null, 1729 // a transient local event-sync error 1730 sync_failure: ?[]const u8 = null, 1731 current_page: RoutablePage = .default, 1732 // whether to render the ANSI art backdrop 1733 enable_ansi: bool = true, 1734 // the selected ANSI art. the server serializes one image for WASM so 1735 // the browser does not need the whole build-generated collection. 1736 ansi_art: []const u8 = "", 1737 // the bound git-service ports. absent in local mode, where remote urls 1738 // are not shown. 1739 git_http_port: ?u16 = null, 1740 git_ssh_port: ?u16 = null, 1741 git_ssh_prefix: []const u8 = "", 1742 // true when this session views a single local repo. unlike `local` 1743 // (the host-side filesystem source) this travels in the snapshot, so 1744 // the wasm side also parses elided link urls and hides the multi-user 1745 // chrome. 1746 is_local: bool = false, 1747 }; 1748 1749 // a user-initiated state change. widgets enqueue these on the session during 1750 // input instead of mutating state or touching the DB themselves; the host 1751 // drains them each frame (see applyAndWritePending / applyPending). this keeps DB 1752 // side effects out of the widget tree and gives every render path one place to 1753 // turn a UI action into a state change + event. 1754 pub const Action = union(enum) { 1755 toggle_ansi, 1756 }; 1757 1758 pub fn init( 1759 arena: *std.heap.ArenaAllocator, 1760 repo: *rp.Repo(.xit, evt.admin_repo_opts), 1761 data: Data, 1762 ) !Self { 1763 var session = Self{ 1764 .data = data, 1765 .arena = arena, 1766 // until a host swaps in a page-scoped arena (Nav does this), page 1767 // allocations land in the session arena. on the web path that's the 1768 // intended behavior, since the whole arena is per-request. 1769 .page_arena = arena, 1770 .admin_repo = repo, 1771 .haxy_moment = try evt.currentMoment(evt.admin_repo_opts, repo), 1772 }; 1773 try session.loadUser(); 1774 return session; 1775 } 1776 1777 // load the logged-in user's name and persisted preferences from the db 1778 pub fn loadUser(self: *Self) !void { 1779 const user_id = self.data.user_id orelse return; 1780 const moment = self.haxy_moment orelse return; 1781 if (try evt.User.readById(evt.AdminDB, evt.admin_repo_opts.hash, moment, self.arena, user_id)) |user| { 1782 self.data.user_name = user.event.name; 1783 self.data.enable_ansi = user.event.enable_ansi; 1784 } 1785 } 1786 1787 pub fn userId(self: *const Self) ?[evt.event_id_size]u8 { 1788 const bytes = self.data.user_id orelse return null; 1789 if (bytes.len != evt.event_id_size) return null; 1790 var id: [evt.event_id_size]u8 = undefined; 1791 @memcpy(&id, bytes); 1792 return id; 1793 } 1794 1795 pub fn formFeedback(self: *const Self, comptime tag: std.meta.Tag(FormFeedback)) ?@FieldType(FormFeedback, @tagName(tag)) { 1796 const feedback = self.data.form_feedback orelse return null; 1797 if (std.meta.activeTag(feedback) != tag) return null; 1798 return @field(feedback, @tagName(tag)); 1799 } 1800 1801 pub fn clearFormFeedback(self: *Self) void { 1802 self.data.form_feedback = null; 1803 } 1804 1805 // the commit author for an event this session creates, or null when it may 1806 // not create one 1807 pub fn eventAuthor(self: *Self) !?evt.CommitAuthor { 1808 if (self.data.is_local) { 1809 const src = self.local orelse return local_author_fallback; 1810 const io = self.io orelse return local_author_fallback; 1811 return try localAuthor(src, io, self.page_arena.child_allocator, self.page_arena); 1812 } 1813 const user_id = self.data.user_id orelse return null; 1814 const moment = self.haxy_moment orelse return null; 1815 const user = (try evt.User.readById(evt.AdminDB, evt.admin_repo_opts.hash, moment, self.page_arena, user_id)) orelse return null; 1816 return .{ .name = user.event.name, .email = user.event.email }; 1817 } 1818 1819 // queue an action for the host to drain this frame. 1820 pub fn push(self: *Self, action: Action) !void { 1821 try self.pending.append(self.arena.allocator(), action); 1822 } 1823 1824 // apply a single action's in-memory effect only (no persistence). 1825 fn apply(self: *Self, action: Action) void { 1826 switch (action) { 1827 .toggle_ansi => self.data.enable_ansi = !self.data.enable_ansi, 1828 } 1829 } 1830 1831 // drain the session's queued actions by applying them to the session. 1832 // used on the wasm path, which has no repo to persist to. 1833 pub fn applyPending(self: *Self) void { 1834 for (self.pending.items) |action| self.apply(action); 1835 self.pending.clearRetainingCapacity(); 1836 } 1837 1838 // drain the session's queued actions by applying them to the session and 1839 // writing them to the db 1840 pub fn applyAndWritePending( 1841 self: *Self, 1842 io: std.Io, 1843 allocator: std.mem.Allocator, 1844 repo: *rp.Repo(.xit, evt.admin_repo_opts), 1845 ) !void { 1846 defer self.pending.clearRetainingCapacity(); 1847 for (self.pending.items) |action| { 1848 self.apply(action); 1849 switch (action) { 1850 .toggle_ansi => if (self.data.user_id) |user_id| { 1851 try evt.User.toggleAnsi(evt.admin_repo_opts, io, allocator, repo, user_id); 1852 }, 1853 } 1854 } 1855 } 1856 1857 // reload the moment from the admin repo and re-read user preferences 1858 pub fn reloadMoment(self: *Self, allocator: std.mem.Allocator, repo: *rp.Repo(.xit, evt.admin_repo_opts)) !void { 1859 const moment = try evt.currentMoment(evt.admin_repo_opts, repo); 1860 self.haxy_moment = moment; 1861 1862 const user_id = self.data.user_id orelse return; 1863 var arena = std.heap.ArenaAllocator.init(allocator); 1864 defer arena.deinit(); 1865 if (try evt.User.readById(evt.AdminDB, evt.admin_repo_opts.hash, moment, &arena, user_id)) |user| { 1866 self.data.enable_ansi = user.event.enable_ansi; 1867 } 1868 } 1869 1870 // request a forward navigation to `route`; the host consumes next_page 1871 // (Nav.sync on the terminal, the wasm tick on the web). 1872 pub fn navigate(self: *Session, route: RoutablePage) !void { 1873 self.clearFormFeedback(); 1874 self.next_page = route; 1875 } 1876 }; 1877 1878 pub fn run(io: std.Io, allocator: std.mem.Allocator, session: *Session, repo_maybe: ?*rp.Repo(.xit, evt.admin_repo_opts)) !void { 1879 var nav = try Nav.init(allocator, session); 1880 defer nav.deinit(allocator); 1881 1882 var terminal = try term.Terminal.init(io, allocator); 1883 var terminal_live = true; 1884 defer if (terminal_live) terminal.deinit(io); 1885 1886 // set term as active so it will be properly cooked 1887 // when a panic/segfault happens 1888 term.setActive(&terminal); 1889 defer term.setActive(null); 1890 1891 while (!terminal.shouldQuit()) { 1892 const grid_changed = try terminal.render(&nav.root); 1893 1894 // process any inputs. 1895 // 1896 // if the grid didn't change, then first do a blocking 1897 // read, so the thread will sleep until further input. 1898 // after that, all remaining reads are non-blocking so 1899 // we can process the rest of the queued inputs. 1900 // 1901 // if the grid *did* change, then only do non-blocking 1902 // reads. we do not want to sleep the thread because 1903 // there may be an animation that requires more looping. 1904 var blocking = !grid_changed; 1905 while (try terminal.readKey(io, blocking)) |key| { 1906 blocking = false; 1907 try inputKey(allocator, &nav.root, key, session); 1908 } 1909 1910 if (session.host_request) |request| { 1911 session.host_request = null; 1912 switch (request) { 1913 .show_copyable_text => |copyable_text| { 1914 term.setActive(null); 1915 terminal.deinit(io); 1916 terminal_live = false; 1917 showCopyableText(io, copyable_text) catch |show_err| { 1918 terminal = try term.Terminal.init(io, allocator); 1919 terminal_live = true; 1920 term.setActive(&terminal); 1921 return show_err; 1922 }; 1923 terminal = try term.Terminal.init(io, allocator); 1924 terminal_live = true; 1925 term.setActive(&terminal); 1926 }, 1927 .sync_events => { 1928 try nav.root.build(allocator, .{ 1929 .min_size = .{ .width = null, .height = null }, 1930 .max_size = .{ .width = terminal.size.width, .height = terminal.size.height }, 1931 }, nav.root.getFocus()); 1932 _ = try terminal.render(&nav.root); 1933 try Repo.Events.performSync(allocator, session); 1934 }, 1935 } 1936 } 1937 1938 // persist queued actions when there's a repo; local mode has none, 1939 // so just apply in-memory 1940 if (repo_maybe) |repo| { 1941 try session.applyAndWritePending(io, allocator, repo); 1942 // reload so the next navigation builds its page from the current moment 1943 try session.reloadMoment(allocator, repo); 1944 } else { 1945 session.applyPending(); 1946 } 1947 1948 // reconcile navigation: forward to a new page, or back on escape. 1949 try nav.sync(allocator, session); 1950 1951 // the quit button (on the quit tab) asks the host to tear down. 1952 if (session.quit_requested) terminal.requestQuit(); 1953 1954 try nav.root.build(allocator, .{ 1955 .min_size = .{ .width = null, .height = null }, 1956 .max_size = .{ .width = terminal.size.width, .height = terminal.size.height }, 1957 }, nav.root.getFocus()); 1958 } 1959 } 1960 1961 fn showCopyableText(io: std.Io, copyable_text: []const u8) !void { 1962 const tty: ?std.Io.File = if (builtin.os.tag == .windows) 1963 null 1964 else 1965 try std.Io.Dir.cwd().openFile(io, "/dev/tty", .{ .mode = .read_write }); 1966 defer if (tty) |file| file.close(io); 1967 1968 const input = if (tty) |file| file else std.Io.File.stdin(); 1969 const output = if (tty) |file| file else std.Io.File.stdout(); 1970 1971 var write_buf: [1024]u8 = undefined; 1972 var writer = output.writer(io, &write_buf); 1973 try writer.interface.print("\x1b[2J\x1b[Hcopy the following text and then press enter to go back:\r\n\r\n{s}\r\n", .{copyable_text}); 1974 try writer.interface.flush(); 1975 1976 var read_buf: [1]u8 = undefined; 1977 var reader = input.reader(io, &read_buf); 1978 while (true) { 1979 const byte = try reader.interface.takeByte(); 1980 if (byte == '\r' or byte == '\n') return; 1981 } 1982 } 1983 1984 pub fn inputKey(allocator: std.mem.Allocator, root: *Widget, key: Key, session: *Session) !void { 1985 const root_focus = root.getFocus(); 1986 const focused_before = root_focus.grandchild_id; 1987 var activate_in_page_link = false; 1988 switch (key) { 1989 // request a navigation pop; the host's Nav.sync goes back a page, or 1990 // quits when there's no history left. 1991 .escape => { 1992 session.back = .requested; 1993 return; 1994 }, 1995 .ctrl => |letter| switch (letter) { 1996 'r' => { 1997 session.refresh_requested = true; 1998 return; 1999 }, 2000 else => try root.input(allocator, key, root_focus), 2001 }, 2002 .enter => { 2003 if (root_focus.grandchild_id) |gid| { 2004 // follow a cross-page link 2005 if (crossPageLink(root_focus, gid, session.data)) |route| { 2006 return session.navigate(route); 2007 } 2008 if (rawLink(root_focus, gid)) |url| return requestRawLink(session, url); 2009 } 2010 activate_in_page_link = true; 2011 try root.input(allocator, key, root_focus); 2012 }, 2013 .mouse => |mouse| { 2014 if (mouse.action == .press and mouse.action.press == .left) { 2015 var clicked: ?usize = null; 2016 var iter = root_focus.children.iterator(); 2017 while (iter.next()) |entry| { 2018 const child = entry.value_ptr.*; 2019 if (!child.focus.focusable and !widget.isBackButton(child.focus)) continue; 2020 const r = child.rect; 2021 if (mouse.x >= r.x and mouse.y >= r.y and 2022 mouse.x < r.x + r.size.width and mouse.y < r.y + r.size.height) 2023 { 2024 clicked = entry.key_ptr.*; 2025 break; 2026 } 2027 } 2028 if (clicked) |focus_id| { 2029 if (widget.isBackButton((root_focus.children.get(focus_id) orelse return).focus)) { 2030 if (session.back == .available) session.back = .requested; 2031 return; 2032 } 2033 // follow a cross-page link 2034 if (crossPageLink(root_focus, focus_id, session.data)) |route| { 2035 return session.navigate(route); 2036 } 2037 if (rawLink(root_focus, focus_id)) |url| { 2038 if (!mouse.ctrl) try requestRawLink(session, url); 2039 return; 2040 } 2041 root_focus.setFocus(focus_id); 2042 activate_in_page_link = true; 2043 } 2044 // forward the press into the widget tree so buttons (and any 2045 // future click-aware widgets) can react. widgets that don't 2046 // care about presses ignore it. 2047 try root.input(allocator, key, root_focus); 2048 } else { 2049 try root.input(allocator, key, root_focus); 2050 } 2051 }, 2052 else => try root.input(allocator, key, root_focus), 2053 } 2054 2055 const focused_after = root_focus.grandchild_id; 2056 if (!activate_in_page_link and focused_before == focused_after) return; 2057 const focus_id = focused_after orelse return; 2058 if (inPageLink(root_focus, focus_id, session.data)) |route| session.data.current_page = route; 2059 } 2060 2061 // a link to bytes the server serves directly rather than to a page route, so 2062 // it never resolves to a RoutablePage 2063 pub const raw_link_prefix = "ax:"; 2064 2065 // a route already loaded into the current page; focusing it changes the url 2066 // without rebuilding the page 2067 pub const in_page_link_prefix = "ai:"; 2068 2069 // an in-page tab's base route, or the exact current route when it is selected 2070 pub fn inPageTabLink(session: *Session, route: RoutablePage, selected: bool) ![]const u8 { 2071 const target = if (selected) session.data.current_page else route; 2072 return std.fmt.allocPrint(session.page_arena.allocator(), "{s}{s}", .{ in_page_link_prefix, try target.toUrl(session.page_arena) }); 2073 } 2074 2075 // a button the web renderer covers with a file picker that posts the chosen 2076 // file to the url after the prefix 2077 pub const file_input_prefix = "file:"; 2078 2079 // a submit button that overrides its enclosing form's action 2080 pub const submit_action_prefix = "submit:"; 2081 2082 // the url an `ax:` link points at, or null for anything else. a host that 2083 // suppresses the anchor's own navigation needs this to follow the link. 2084 pub fn rawLink(root_focus: *Focus, focus_id: usize) ?[]const u8 { 2085 const child = root_focus.children.get(focus_id) orelse return null; 2086 const custom = switch (child.focus.kind) { 2087 .custom => |c| c, 2088 else => return null, 2089 }; 2090 if (!std.mem.startsWith(u8, custom, raw_link_prefix)) return null; 2091 return custom[raw_link_prefix.len..]; 2092 } 2093 2094 fn requestRawLink(session: *Session, url: []const u8) !void { 2095 session.host_request = .{ .show_copyable_text = try terminalWebUrl(session.page_arena.allocator(), session, url) }; 2096 } 2097 2098 pub fn terminalWebUrl(allocator: std.mem.Allocator, session: *const Session, path: []const u8) ![]const u8 { 2099 return if (session.web_port) |port| 2100 try std.fmt.allocPrint(allocator, "http://localhost:{d}{s}", .{ port, path }) 2101 else 2102 path; 2103 } 2104 2105 // if the focus target at focus_id is an `a:` link that should navigate (a 2106 // different parent page, or a different files directory within the repo page), 2107 // return its route; otherwise null. lets a host turn a click / enter on such a 2108 // link into a navigation rather than a focus change. 2109 pub fn crossPageLink(root_focus: *Focus, focus_id: usize, data: Session.Data) ?RoutablePage { 2110 const current = data.current_page; 2111 const route = pageLink(root_focus, focus_id, data, "a:") orelse return null; 2112 // a link to a different parent page always navigates; within a page, a 2113 // files-directory / commits-page / list-window change navigates while tab 2114 // links stay in-page. 2115 if (route.parent() != current.parent() or RoutablePage.repoPageChanged(route, current) or RoutablePage.forkPageChanged(route, current) or RoutablePage.homePageChanged(route, current) or RoutablePage.userPageChanged(route, current)) return route; 2116 return null; 2117 } 2118 2119 // the route carried by an `ai:` focus target, or null for any other target 2120 pub fn inPageLink(root_focus: *Focus, focus_id: usize, data: Session.Data) ?RoutablePage { 2121 return pageLink(root_focus, focus_id, data, in_page_link_prefix); 2122 } 2123 2124 fn pageLink(root_focus: *Focus, focus_id: usize, data: Session.Data, prefix: []const u8) ?RoutablePage { 2125 const child = root_focus.children.get(focus_id) orelse return null; 2126 const custom = switch (child.focus.kind) { 2127 .custom => |c| c, 2128 else => return null, 2129 }; 2130 if (!std.mem.startsWith(u8, custom, prefix)) return null; 2131 const path = custom[prefix.len..]; 2132 // local sessions build (and parse) links with the repo identity elided 2133 return if (data.is_local) RoutablePage.fromUrlLocal(path) else RoutablePage.fromUrl(path); 2134 } 2135 2136 // a display author, resolved against the admin db at read time 2137 pub const Author = union(enum) { 2138 unknown, 2139 email: []const u8, // an email no user matches 2140 user_name: []const u8, 2141 2142 // the commit author line's email, resolved like initFromEmail 2143 pub fn init( 2144 haxy_moment: ?evt.AdminDB.HashMap(.read_only), 2145 arena: *std.heap.ArenaAllocator, 2146 author_line: []const u8, 2147 ) !Author { 2148 return initFromEmail(haxy_moment, arena, evt.authorEmail(author_line)); 2149 } 2150 2151 // from a record's stored author email: it resolves to the user currently 2152 // holding it, else stays the email. the result is allocated in `arena`, 2153 // so the email may borrow transient memory. 2154 pub fn initFromEmail( 2155 haxy_moment: ?evt.AdminDB.HashMap(.read_only), 2156 arena: *std.heap.ArenaAllocator, 2157 author_email: ?[]const u8, 2158 ) !Author { 2159 const email = author_email orelse return .unknown; 2160 if (haxy_moment) |moment| { 2161 if (try evt.User.readByEmail(evt.AdminDB, evt.admin_repo_opts.hash, moment, arena, email)) |user| { 2162 return .{ .user_name = user.event.name }; 2163 } 2164 } 2165 return .{ .email = try arena.allocator().dupe(u8, email) }; 2166 } 2167 }; 2168 2169 // the "a:" link to user `name`'s page. 2170 pub fn userLink(page_arena: *std.heap.ArenaAllocator, name: []const u8) ![]const u8 { 2171 const parsed = RoutablePage.Array(evt.User.name_max_len).from(name) orelse return error.RouteTooLong; 2172 const url = try (RoutablePage{ .user_repos = .{ .name = parsed } }).toUrl(page_arena); 2173 return std.fmt.allocPrint(page_arena.allocator(), "a:{s}", .{url}); 2174 } 2175 2176 // a focusable " author " box showing `author`, linking to their user page 2177 // when it is a known user 2178 pub fn authorBox(allocator: std.mem.Allocator, page_arena: *std.heap.ArenaAllocator, author: Author) !wgt.TextBox { 2179 const text = switch (author) { 2180 .unknown => "", 2181 .email, .user_name => |t| t, 2182 }; 2183 var tb = try wgt.TextBox.init(allocator, text, .{ .border_style = .single, .rounded_corners = true, .wrap_kind = .none, .label = " author " }); 2184 errdefer tb.deinit(allocator); 2185 tb.getFocus().focusable = true; 2186 switch (author) { 2187 .user_name => |name| tb.getFocus().kind = .{ .custom = try userLink(page_arena, name) }, 2188 else => {}, 2189 } 2190 return tb; 2191 } 2192 2193 // native-TUI navigation 2194 pub const Nav = struct { 2195 root: Widget, 2196 route: RoutablePage, 2197 // backs the current page (its Page data and the page-scoped strings its 2198 // widgets build). owned here, swapped on each navigation. session.page_arena 2199 // tracks whichever of these is current so widgets allocate into it. 2200 arena: *std.heap.ArenaAllocator, 2201 history: std.ArrayList(Entry), 2202 2203 // each retained page keeps its own arena, freed when the page leaves the 2204 // stack (popped on back, evicted at cap, or on deinit). this is what keeps a 2205 // long-lived session from accumulating every page it ever visited. 2206 const Entry = struct { root: Widget, route: RoutablePage, arena: *std.heap.ArenaAllocator }; 2207 2208 // cap on retained back-history so the chain can't grow memory without bound 2209 const max_history: usize = 16; 2210 2211 pub fn init(allocator: std.mem.Allocator, session: *Session) !Nav { 2212 session.back = .unavailable; 2213 const arena = try allocator.create(std.heap.ArenaAllocator); 2214 arena.* = std.heap.ArenaAllocator.init(allocator); 2215 errdefer { 2216 arena.deinit(); 2217 allocator.destroy(arena); 2218 } 2219 2220 session.page_arena = arena; 2221 const route = session.data.current_page; 2222 2223 const page = try arena.allocator().create(Page); 2224 page.* = try Page.init(arena, session, route); 2225 return .{ 2226 .root = try initRoot(allocator, page, session), 2227 .route = route, 2228 .arena = arena, 2229 .history = .empty, 2230 }; 2231 } 2232 2233 pub fn deinit(self: *Nav, allocator: std.mem.Allocator) void { 2234 self.root.deinit(allocator); 2235 freeArena(allocator, self.arena); 2236 for (self.history.items) |*entry| { 2237 entry.root.deinit(allocator); 2238 freeArena(allocator, entry.arena); 2239 } 2240 self.history.deinit(allocator); 2241 } 2242 2243 fn freeArena(allocator: std.mem.Allocator, arena: *std.heap.ArenaAllocator) void { 2244 arena.deinit(); 2245 allocator.destroy(arena); 2246 } 2247 2248 // reconcile the displayed root with the session's navigation state. a 2249 // forward nav (current_page moved to a different parent page) pushes the 2250 // current root and builds the new page in a fresh arena; a back request 2251 // frees the current page and restores the previous one. when escape is 2252 // pressed with no history left we switch to the quit tab instead of quitting. 2253 pub fn sync(self: *Nav, allocator: std.mem.Allocator, session: *Session) !void { 2254 // refresh: rebuild the current page in place from a current moment 2255 if (session.refresh_requested) { 2256 session.refresh_requested = false; 2257 if (session.haxy_moment != null or session.local != null) { 2258 const arena = try allocator.create(std.heap.ArenaAllocator); 2259 arena.* = std.heap.ArenaAllocator.init(allocator); 2260 errdefer freeArena(allocator, arena); 2261 2262 session.page_arena = arena; 2263 2264 const route = session.data.current_page; 2265 const page = try arena.allocator().create(Page); 2266 page.* = try Page.init(arena, session, route); 2267 const new_root = try initRoot(allocator, page, session); 2268 2269 self.root.deinit(allocator); 2270 freeArena(allocator, self.arena); 2271 self.root = new_root; 2272 self.route = route; 2273 self.arena = arena; 2274 } 2275 return; 2276 } 2277 2278 if (session.back == .requested) { 2279 if (self.history.pop()) |entry| { 2280 session.back = if (self.history.items.len == 0) .unavailable else .available; 2281 self.root.deinit(allocator); 2282 freeArena(allocator, self.arena); 2283 self.root = entry.root; 2284 self.route = entry.route; 2285 self.arena = entry.arena; 2286 session.page_arena = entry.arena; 2287 session.data.current_page = entry.route; 2288 chooseAnsiArtForNavigation(session); 2289 return; 2290 } 2291 session.back = .unavailable; 2292 // nothing to go back to; switch to the quit confirmation 2293 const root_focus = self.root.getFocus(); 2294 var iter = root_focus.children.iterator(); 2295 while (iter.next()) |entry| { 2296 switch (entry.value_ptr.focus.kind) { 2297 .custom => |custom| if (std.mem.eql(u8, custom, Quit.tab_kind)) { 2298 root_focus.setFocus(entry.key_ptr.*); 2299 // a Stack only builds its selected child, so the quit 2300 // button isn't in the focus tree until a build runs with 2301 // the quit tab selected. build once, then send a 2302 // synthetic arrow_down to drop focus from the tab onto 2303 // the button so it's ready to confirm. 2304 try self.root.build(allocator, .{ 2305 .min_size = .{ .width = null, .height = 40 }, 2306 .max_size = .{ .width = 80, .height = null }, 2307 }, root_focus); 2308 try self.root.input(allocator, .arrow_down, root_focus); 2309 break; 2310 }, 2311 else => {}, 2312 } 2313 } 2314 return; 2315 } 2316 2317 // forward navigation: navigate() set next_page to the page to move to (a 2318 // cross-page link or tab change crossing pages) 2319 if (session.next_page) |route| { 2320 session.next_page = null; 2321 if (session.haxy_moment == null and session.local == null) return; 2322 // the page we navigated to becomes the current page 2323 session.data.current_page = route; 2324 session.back = .available; 2325 2326 const arena = try allocator.create(std.heap.ArenaAllocator); 2327 arena.* = std.heap.ArenaAllocator.init(allocator); 2328 errdefer freeArena(allocator, arena); 2329 2330 session.page_arena = arena; 2331 2332 const page = try arena.allocator().create(Page); 2333 page.* = try Page.init(arena, session, route); 2334 const new_root = try initRoot(allocator, page, session); 2335 2336 try self.history.append(allocator, .{ .root = self.root, .route = self.route, .arena = self.arena }); 2337 // drop the oldest entry (freeing its widget tree and arena) once over cap 2338 if (self.history.items.len > max_history) { 2339 var oldest = self.history.orderedRemove(0); 2340 oldest.root.deinit(allocator); 2341 freeArena(allocator, oldest.arena); 2342 } 2343 self.root = new_root; 2344 self.route = route; 2345 self.arena = arena; 2346 } 2347 } 2348 }; 2349 2350 pub fn initRoot(allocator: std.mem.Allocator, page: *const Page, session: *Session) !Widget { 2351 const page_widget: Widget = switch (page.*) { 2352 .home => |*p| .{ .home = try .init(allocator, p, session) }, 2353 .user => |*p| .{ .user = try .init(allocator, p, session) }, 2354 .repo => |*p| .{ .repo = try .init(allocator, p, session) }, 2355 .fork => |*p| .{ .fork = try .init(allocator, p, session) }, 2356 }; 2357 2358 chooseAnsiArtForNavigation(session); 2359 2360 // on the TUI/SSH, the page sits above a one-row footer showing the url 2361 var root = if (session.is_terminal) blk: { 2362 var box = try wgt.Box(Widget).init(allocator, .{ .border_style = null, .direction = .vert }); 2363 errdefer box.deinit(allocator); 2364 const bg_id = bg_blk: { 2365 var background = try widget.AnsiBackground.init(allocator, page_widget, session); 2366 errdefer background.deinit(allocator); 2367 const id = background.getFocus().id; 2368 try box.children.put(allocator, id, .{ .widget = .{ .background = background }, .rect = null, .min_size = null }); 2369 break :bg_blk id; 2370 }; 2371 { 2372 var footer = try widget.Footer.init(allocator, session); 2373 errdefer footer.deinit(allocator); 2374 try box.children.put(allocator, footer.getFocus().id, .{ .widget = .{ .footer = footer }, .rect = null, .min_size = .{ .width = null, .height = 1 } }); 2375 } 2376 box.getFocus().child_id = bg_id; 2377 break :blk Widget{ .box = box }; 2378 } else Widget{ .background = try widget.AnsiBackground.init(allocator, page_widget, session) }; 2379 errdefer root.deinit(allocator); 2380 2381 // input-owning views build their TextInputs in init, so reset their 2382 // registrations here 2383 session.text_inputs.clearRetainingCapacity(); 2384 2385 try root.build(allocator, .{ 2386 .min_size = .{ .width = null, .height = 40 }, 2387 .max_size = .{ .width = 100, .height = null }, 2388 }, root.getFocus()); 2389 2390 return root; 2391 } 2392 2393 // native and server-side sessions choose from the embedded collection. WASM 2394 // keeps the art serialized by the server instead. 2395 fn chooseAnsiArtForNavigation(session: *Session) void { 2396 if (comptime ansi_arts.len == 0) return; 2397 const io = session.io orelse return; 2398 var random: usize = undefined; 2399 io.random(std.mem.asBytes(&random)); 2400 session.data.ansi_art = ansi_arts[random % ansi_arts.len]; 2401 } 2402