HAXY

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

╭────╮ ╭ 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

1715 const focused_after = root_focus.grandchild_id; 1716 if (!activate_in_page_link and focused_before == focused_after) return; 1717 const focus_id = focused_after orelse return; 1718 if (inPageLink(root_focus, focus_id, session.data)) |route| session.data.current_page = route; 1719 } 1720 1721 // a link to bytes the server serves directly rather than to a page route, so 1722 // it never resolves to a RoutablePage 1723 pub const raw_link_prefix = "ax:"; 1724 1725 // a route already loaded into the current page; focusing it changes the url 1726 // without rebuilding the page 1727 pub const in_page_link_prefix = "ai:"; 1728 1729 // an in-page tab's base route, or the exact current route when it is selected 1730 pub fn inPageTabLink(session: *Session, route: RoutablePage, selected: bool) ![]const u8 { 1731 const target = if (selected) session.data.current_page else route; 1732 return std.fmt.allocPrint(session.page_arena.allocator(), "{s}{s}", .{ in_page_link_prefix, try target.toUrl(session.page_arena) }); 1733 } 1734 1735 // a button the web renderer covers with a file picker that posts the chosen 1736 // file to the url after the prefix 1737 pub const file_input_prefix = "file:"; 1738 1739 // a submit button that overrides its enclosing form's action 1740 pub const submit_action_prefix = "submit:"; 1741 1742 // the url an `ax:` link points at, or null for anything else. a host that 1743 // suppresses the anchor's own navigation needs this to follow the link. 1744 pub fn rawLink(root_focus: *Focus, focus_id: usize) ?[]const u8 { 1745 const child = root_focus.children.get(focus_id) orelse return null; 1746 const custom = switch (child.focus.kind) { 1747 .custom => |c| c, 1748 else => return null, 1749 }; 1750 if (!std.mem.startsWith(u8, custom, raw_link_prefix)) return null; 1751 return custom[raw_link_prefix.len..]; 1752 } 1753 1754 fn requestRawLink(session: *Session, url: []const u8) !void { 1755 session.host_request = .{ .show_copyable_text = try terminalWebUrl(session.page_arena.allocator(), session, url) }; 1756 } 1757 1758 pub fn terminalWebUrl(allocator: std.mem.Allocator, session: *const Session, path: []const u8) ![]const u8 { 1759 return if (session.web_port) |port| 1760 try std.fmt.allocPrint(allocator, "http://localhost:{d}{s}", .{ port, path }) 1761 else 1762 path; 1763 } 1764 1765 // if the focus target at focus_id is an `a:` link that should navigate (a 1766 // different parent page, or a different files directory within the repo page), 1767 // return its route; otherwise null. lets a host turn a click / enter on such a 1768 // link into a navigation rather than a focus change. 1769 pub fn crossPageLink(root_focus: *Focus, focus_id: usize, data: Session.Data) ?RoutablePage { 1770 const current = data.current_page; 1771 const route = pageLink(root_focus, focus_id, data, "a:") orelse return null; 1772 // a link to a different parent page always navigates; within a page, a 1773 // files-directory / commits-page / list-window change navigates while tab 1774 // links stay in-page. 1775 if (route.parent() != current.parent() or RoutablePage.repoPageChanged(route, current) or RoutablePage.homePageChanged(route, current) or RoutablePage.userPageChanged(route, current)) return route; 1776 return null; 1777 } 1778 1779 // the route carried by an `ai:` focus target, or null for any other target 1780 pub fn inPageLink(root_focus: *Focus, focus_id: usize, data: Session.Data) ?RoutablePage { 1781 return pageLink(root_focus, focus_id, data, in_page_link_prefix); 1782 } 1783 1784 fn pageLink(root_focus: *Focus, focus_id: usize, data: Session.Data, prefix: []const u8) ?RoutablePage { 1785 const child = root_focus.children.get(focus_id) orelse return null; 1786 const custom = switch (child.focus.kind) { 1787 .custom => |c| c, 1788 else => return null, 1789 }; 1790 if (!std.mem.startsWith(u8, custom, prefix)) return null; 1791 const path = custom[prefix.len..]; 1792 // local sessions build (and parse) links with the repo identity elided 1793 return if (data.is_local) RoutablePage.fromUrlLocal(path) else RoutablePage.fromUrl(path); 1794 } 1795 1796 // a display author, resolved against the admin db at read time 1797 pub const Author = union(enum) { 1798 unknown, 1799 email: []const u8, // an email no user matches 1800 user_name: []const u8, 1801 1802 // the commit author line's email, resolved like initFromEmail 1803 pub fn init( 1804 haxy_moment: ?evt.AdminDB.HashMap(.read_only), 1805 arena: *std.heap.ArenaAllocator, 1806 author_line: []const u8, 1807 ) !Author { 1808 return initFromEmail(haxy_moment, arena, evt.authorEmail(author_line)); 1809 } 1810 1811 // from a record's stored author email: it resolves to the user currently 1812 // holding it, else stays the email. the result is allocated in `arena`, 1813 // so the email may borrow transient memory. 1814 pub fn initFromEmail( 1815 haxy_moment: ?evt.AdminDB.HashMap(.read_only), 1816 arena: *std.heap.ArenaAllocator, 1817 author_email: ?[]const u8, 1818 ) !Author { 1819 const email = author_email orelse return .unknown; 1820 if (haxy_moment) |moment| { 1821 if (try evt.User.readByEmail(evt.AdminDB, evt.admin_repo_opts.hash, moment, arena, email)) |user| { 1822 return .{ .user_name = user.event.name }; 1823 } 1824 } 1825 return .{ .email = try arena.allocator().dupe(u8, email) }; 1826 } 1827 }; 1828 1829 // the "a:" link to user `name`'s page. 1830 pub fn userLink(page_arena: *std.heap.ArenaAllocator, name: []const u8) ![]const u8 { 1831 const parsed = RoutablePage.Array(evt.User.name_max_len).from(name) orelse return error.RouteTooLong; 1832 const url = try (RoutablePage{ .user_repos = .{ .name = parsed } }).toUrl(page_arena); 1833 return std.fmt.allocPrint(page_arena.allocator(), "a:{s}", .{url}); 1834 } 1835 1836 // a focusable " author " box showing `author`, linking to their user page 1837 // when it is a known user 1838 pub fn authorBox(allocator: std.mem.Allocator, page_arena: *std.heap.ArenaAllocator, author: Author) !wgt.TextBox { 1839 const text = switch (author) { 1840 .unknown => "", 1841 .email, .user_name => |t| t, 1842 }; 1843 var tb = try wgt.TextBox.init(allocator, text, .{ .border_style = .single, .rounded_corners = true, .wrap_kind = .none, .label = " author " }); 1844 errdefer tb.deinit(allocator); 1845 tb.getFocus().focusable = true; 1846 switch (author) { 1847 .user_name => |name| tb.getFocus().kind = .{ .custom = try userLink(page_arena, name) }, 1848 else => {}, 1849 } 1850 return tb; 1851 } 1852 1853 // native-TUI navigation 1854 pub const Nav = struct { 1855 root: Widget, 1856 route: RoutablePage, 1857 // backs the current page (its Page data and the page-scoped strings its 1858 // widgets build). owned here, swapped on each navigation. session.page_arena 1859 // tracks whichever of these is current so widgets allocate into it. 1860 arena: *std.heap.ArenaAllocator, 1861 history: std.ArrayList(Entry), 1862 1863 // each retained page keeps its own arena, freed when the page leaves the 1864 // stack (popped on back, evicted at cap, or on deinit). this is what keeps a 1865 // long-lived session from accumulating every page it ever visited. 1866 const Entry = struct { root: Widget, route: RoutablePage, arena: *std.heap.ArenaAllocator }; 1867 1868 // cap on retained back-history so the chain can't grow memory without bound 1869 const max_history: usize = 16; 1870 1871 pub fn init(allocator: std.mem.Allocator, session: *Session) !Nav { 1872 const arena = try allocator.create(std.heap.ArenaAllocator); 1873 arena.* = std.heap.ArenaAllocator.init(allocator); 1874 errdefer { 1875 arena.deinit(); 1876 allocator.destroy(arena); 1877 } 1878 1879 session.page_arena = arena; 1880 const route = session.data.current_page; 1881 1882 const page = try arena.allocator().create(Page); 1883 page.* = try Page.init(arena, session, route); 1884 return .{ 1885 .root = try initRoot(allocator, page, session), 1886 .route = route, 1887 .arena = arena, 1888 .history = .empty, 1889 }; 1890 } 1891 1892 pub fn deinit(self: *Nav, allocator: std.mem.Allocator) void { 1893 self.root.deinit(allocator); 1894 freeArena(allocator, self.arena); 1895 for (self.history.items) |*entry| { 1896 entry.root.deinit(allocator); 1897 freeArena(allocator, entry.arena); 1898 } 1899 self.history.deinit(allocator); 1900 } 1901 1902 fn freeArena(allocator: std.mem.Allocator, arena: *std.heap.ArenaAllocator) void { 1903 arena.deinit(); 1904 allocator.destroy(arena); 1905 } 1906 1907 // reconcile the displayed root with the session's navigation state. a 1908 // forward nav (current_page moved to a different parent page) pushes the 1909 // current root and builds the new page in a fresh arena; a back request 1910 // frees the current page and restores the previous one. when escape is 1911 // pressed with no history left we switch to the quit tab instead of quitting. 1912 pub fn sync(self: *Nav, allocator: std.mem.Allocator, session: *Session) !void { 1913 // refresh: rebuild the current page in place from a current moment 1914 if (session.refresh_requested) { 1915 session.refresh_requested = false; 1916 if (session.haxy_moment != null or session.local != null) { 1917 const arena = try allocator.create(std.heap.ArenaAllocator); 1918 arena.* = std.heap.ArenaAllocator.init(allocator); 1919 errdefer freeArena(allocator, arena); 1920 1921 session.page_arena = arena; 1922 1923 const route = session.data.current_page; 1924 const page = try arena.allocator().create(Page); 1925 page.* = try Page.init(arena, session, route); 1926 const new_root = try initRoot(allocator, page, session); 1927 1928 self.root.deinit(allocator); 1929 freeArena(allocator, self.arena); 1930 self.root = new_root; 1931 self.route = route; 1932 self.arena = arena; 1933 } 1934 return; 1935 } 1936 1937 if (session.nav_back) { 1938 session.nav_back = false; 1939 if (self.history.pop()) |entry| { 1940 self.root.deinit(allocator); 1941 freeArena(allocator, self.arena); 1942 self.root = entry.root; 1943 self.route = entry.route; 1944 self.arena = entry.arena; 1945 session.page_arena = entry.arena; 1946 session.data.current_page = entry.route; 1947 chooseAnsiArtForNavigation(session); 1948 return; 1949 } 1950 // nothing to go back to; switch to the quit confirmation 1951 const root_focus = self.root.getFocus(); 1952 var iter = root_focus.children.iterator(); 1953 while (iter.next()) |entry| { 1954 switch (entry.value_ptr.focus.kind) { 1955 .custom => |custom| if (std.mem.eql(u8, custom, Quit.tab_kind)) { 1956 root_focus.setFocus(entry.key_ptr.*); 1957 // a Stack only builds its selected child, so the quit 1958 // button isn't in the focus tree until a build runs with 1959 // the quit tab selected. build once, then send a 1960 // synthetic arrow_down to drop focus from the tab onto 1961 // the button so it's ready to confirm. 1962 try self.root.build(allocator, .{ 1963 .min_size = .{ .width = null, .height = 40 }, 1964 .max_size = .{ .width = 80, .height = null }, 1965 }, root_focus); 1966 try self.root.input(allocator, .arrow_down, root_focus); 1967 break; 1968 }, 1969 else => {}, 1970 } 1971 } 1972 return; 1973 } 1974 1975 // forward navigation: navigate() set next_page to the page to move to (a 1976 // cross-page link or tab change crossing pages) 1977 if (session.next_page) |route| { 1978 session.next_page = null; 1979 if (session.haxy_moment == null and session.local == null) return; 1980 // the page we navigated to becomes the current page 1981 session.data.current_page = route; 1982 1983 const arena = try allocator.create(std.heap.ArenaAllocator); 1984 arena.* = std.heap.ArenaAllocator.init(allocator); 1985 errdefer freeArena(allocator, arena); 1986 1987 session.page_arena = arena; 1988 1989 const page = try arena.allocator().create(Page); 1990 page.* = try Page.init(arena, session, route); 1991 const new_root = try initRoot(allocator, page, session); 1992 1993 try self.history.append(allocator, .{ .root = self.root, .route = self.route, .arena = self.arena }); 1994 // drop the oldest entry (freeing its widget tree and arena) once over cap 1995 if (self.history.items.len > max_history) { 1996 var oldest = self.history.orderedRemove(0); 1997 oldest.root.deinit(allocator); 1998 freeArena(allocator, oldest.arena); 1999 } 2000 self.root = new_root; 2001 self.route = route; 2002 self.arena = arena; 2003 } 2004 } 2005 }; 2006 2007 pub fn initRoot(allocator: std.mem.Allocator, page: *const Page, session: *Session) !Widget { 2008 const page_widget: Widget = switch (page.*) { 2009 .home => |*p| .{ .home = try .init(allocator, p, session) }, 2010 .user => |*p| .{ .user = try .init(allocator, p, session) }, 2011 .repo => |*p| .{ .repo = try .init(allocator, p, session) }, 2012 }; 2013 2014 chooseAnsiArtForNavigation(session); 2015 2016 // on the TUI/SSH, the page sits above a one-row footer showing the url 2017 var root = if (session.is_terminal) blk: { 2018 var box = try wgt.Box(Widget).init(allocator, .{ .border_style = null, .direction = .vert }); 2019 errdefer box.deinit(allocator); 2020 const bg_id = bg_blk: { 2021 var background = try widget.AnsiBackground.init(allocator, page_widget, session); 2022 errdefer background.deinit(allocator); 2023 const id = background.getFocus().id; 2024 try box.children.put(allocator, id, .{ .widget = .{ .background = background }, .rect = null, .min_size = null }); 2025 break :bg_blk id; 2026 }; 2027 { 2028 var footer = try widget.Footer.init(allocator, session); 2029 errdefer footer.deinit(allocator); 2030 try box.children.put(allocator, footer.getFocus().id, .{ .widget = .{ .footer = footer }, .rect = null, .min_size = .{ .width = null, .height = 1 } }); 2031 } 2032 box.getFocus().child_id = bg_id; 2033 break :blk Widget{ .box = box }; 2034 } else Widget{ .background = try widget.AnsiBackground.init(allocator, page_widget, session) }; 2035 errdefer root.deinit(allocator); 2036 2037 // input-owning views build their TextInputs in init, so reset their 2038 // registrations here 2039 session.text_inputs.clearRetainingCapacity(); 2040 2041 try root.build(allocator, .{ 2042 .min_size = .{ .width = null, .height = 40 }, 2043 .max_size = .{ .width = 100, .height = null }, 2044 }, root.getFocus()); 2045 2046 return root; 2047 } 2048 2049 // native and server-side sessions choose from the embedded collection. WASM 2050 // keeps the art serialized by the server instead. 2051 fn chooseAnsiArtForNavigation(session: *Session) void { 2052 if (comptime ansi_arts.len == 0) return; 2053 const io = session.io orelse return; 2054 var random: usize = undefined; 2055 io.random(std.mem.asBytes(&random)); 2056 session.data.ansi_art = ansi_arts[random % ansi_arts.len]; 2057 } 2058