╭─────────────╮ │scroll to top│ ╰─────────────╯ ╭ ui.zig ───────────────────────────────────────────────────────╮ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ╰───────────────────────────────────────────────────────────────╯
🬐 🬠 🬞🬂🬏 🬟 🬑 🬟 🬑 ╭master╮ master haxy: 🬋🬋🬋 🬋🬋🬋 🬋 🬋 │files │ commits refs discuss issues patches new login 🬐 🬠 🬐 🬠 🬑 🬟 🬰 ╰──────╯ (716) user
╭ find file ─ ─ ─ ─ ─ ─ ─ ─ ─ ─╮ ╭────╮ ╭ clone ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─╮ │ │ │http│ ssh │ │ ╰ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─╯ ╰────╯ ╰ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─╯
.. embed/ event/ test/ ui/ command.zig diff3.zig event.zig find.zig fork.zig lib.zig main.zig main_wasm.zig markdown.zig notify.zig patch.zig progress.zig push.zig search.zig search_commit.zig search_thread.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
3139 }; 3140 var tb = try wgt.TextBox.init(allocator, text, .{ .border = .single, .round_corners = true, .wrap_kind = .none, .top_label = .{ .text = " author " } }); 3141 errdefer tb.deinit(allocator); 3142 tb.getFocus().mode = .all; 3143 switch (author) { 3144 .user_name => |name| tb.getFocus().kind = .{ .custom = try userLink(page_arena, name) }, 3145 else => {}, 3146 } 3147 return tb; 3148 } 3149 3150 // native-TUI navigation 3151 pub const Nav = struct { 3152 root: Widget, 3153 // backs the current page (its Page data and the page-scoped strings its 3154 // widgets build). owned here, swapped on each navigation. session.page_arena 3155 // tracks whichever of these is current so widgets allocate into it. 3156 arena: *std.heap.ArenaAllocator, 3157 // the login the current root was built for 3158 user_id: ?[evt.event_id_size]u8, 3159 history: std.ArrayList(Entry), 3160 3161 // each retained page keeps its own arena, freed when the page leaves the 3162 // stack (popped on back, evicted at cap, or on deinit). this is what keeps a 3163 // long-lived session from accumulating every page it ever visited. 3164 const Entry = struct { root: Widget, route: RoutablePage, arena: *std.heap.ArenaAllocator, user_id: ?[evt.event_id_size]u8 }; 3165 3166 // cap on retained back-history so the chain can't grow memory without bound 3167 const max_history: usize = 16; 3168 3169 pub fn init(allocator: std.mem.Allocator, session: *Session) !Nav { 3170 session.back = .unavailable; 3171 const arena = try allocator.create(std.heap.ArenaAllocator); 3172 arena.* = std.heap.ArenaAllocator.init(allocator); 3173 errdefer { 3174 arena.deinit(); 3175 allocator.destroy(arena); 3176 } 3177 3178 return .{ 3179 .root = try initCurrentRoot(allocator, arena, session), 3180 .arena = arena, 3181 .user_id = session.userId(), 3182 .history = .empty, 3183 }; 3184 } 3185 3186 pub fn deinit(self: *Nav, allocator: std.mem.Allocator) void { 3187 self.root.deinit(allocator); 3188 freeArena(allocator, self.arena); 3189 for (self.history.items) |*entry| { 3190 entry.root.deinit(allocator); 3191 freeArena(allocator, entry.arena); 3192 } 3193 self.history.deinit(allocator); 3194 } 3195 3196 // rebuild the current page in place from a current moment 3197 fn rebuild(self: *Nav, allocator: std.mem.Allocator, session: *Session) !void { 3198 if (session.haxy_moment == null and session.local == null) return; 3199 const arena = try allocator.create(std.heap.ArenaAllocator); 3200 arena.* = std.heap.ArenaAllocator.init(allocator); 3201 errdefer freeArena(allocator, arena); 3202 3203 const new_root = try initCurrentRoot(allocator, arena, session); 3204 3205 self.root.deinit(allocator); 3206 freeArena(allocator, self.arena); 3207 self.root = new_root; 3208 self.arena = arena; 3209 self.user_id = session.userId(); 3210 } 3211 3212 // build the current page's root in `arena`, or the not-found page's when 3213 // the route names nothing 3214 fn initCurrentRoot(allocator: std.mem.Allocator, arena: *std.heap.ArenaAllocator, session: *Session) !Widget { 3215 session.page_arena = arena; 3216 const page = try arena.allocator().create(Page); 3217 page.* = Page.init(arena, session, session.data.current_page) catch |err| switch (err) { 3218 error.NotFound => blk: { 3219 session.data.current_page = .not_found; 3220 break :blk .not_found; 3221 }, 3222 else => |e| return e, 3223 }; 3224 return initRoot(allocator, page, session); 3225 } 3226 3227 fn freeArena(allocator: std.mem.Allocator, arena: *std.heap.ArenaAllocator) void { 3228 arena.deinit(); 3229 allocator.destroy(arena); 3230 } 3231 3232 // reconcile the displayed root with the session's navigation state. a 3233 // forward nav (current_page moved to a different parent page) pushes the 3234 // current root and builds the new page in a fresh arena; a back request 3235 // frees the current page and restores the previous one. when escape is 3236 // pressed with no history left we switch to the quit tab instead of quitting. 3237 // returns whether the root was replaced. 3238 pub fn sync(self: *Nav, allocator: std.mem.Allocator, session: *Session) !bool { 3239 // refresh: rebuild the current page in place from a current moment 3240 if (session.refresh_requested) { 3241 session.refresh_requested = false; 3242 try self.rebuild(allocator, session); 3243 return true; 3244 } 3245 3246 if (session.back == .requested) { 3247 if (self.history.pop()) |entry| { 3248 session.back = if (self.history.items.len == 0) .unavailable else .available; 3249 self.root.deinit(allocator); 3250 freeArena(allocator, self.arena); 3251 self.root = entry.root; 3252 self.arena = entry.arena; 3253 self.user_id = entry.user_id; 3254 session.page_arena = entry.arena; 3255 session.data.current_page = entry.route; 3256 // a page built under another login is rebuilt rather than restored 3257 if (!std.meta.eql(entry.user_id, session.userId())) { 3258 try self.rebuild(allocator, session); 3259 return true; 3260 } 3261 chooseAnsiArtForNavigation(session); 3262 return true; 3263 } 3264 session.back = .unavailable; 3265 // nothing to go back to; switch to the quit confirmation 3266 const root_focus = self.root.getFocus(); 3267 var iter = root_focus.children.iterator(); 3268 while (iter.next()) |entry| { 3269 switch (entry.value_ptr.focus.kind) { 3270 .custom => |custom| if (std.mem.eql(u8, custom, Quit.tab_kind)) { 3271 root_focus.setFocus(entry.key_ptr.*); 3272 // a Stack only builds its selected child, so the quit 3273 // button isn't in the focus tree until a build runs with 3274 // the quit tab selected. build once, then send a 3275 // synthetic arrow_down to drop focus from the tab onto 3276 // the button so it's ready to confirm. 3277 try self.root.build(allocator, .{ 3278 .min_size = .{ .width = null, .height = 40 }, 3279 .max_size = .{ .width = 80, .height = null }, 3280 }, root_focus); 3281 try self.root.input(allocator, .arrow_down, root_focus); 3282 break; 3283 }, 3284 else => {}, 3285 } 3286 } 3287 return false; 3288 } 3289 3290 // forward navigation: navigate() set next_page to the page to move to (a 3291 // cross-page link or tab change crossing pages) 3292 if (session.next_page) |route| { 3293 session.next_page = null; 3294 if (session.haxy_moment == null and session.local == null) return false; 3295 const previous_route = session.data.current_page; 3296 // the page we navigated to becomes the current page 3297 session.data.current_page = route; 3298 session.back = .available; 3299 3300 const arena = try allocator.create(std.heap.ArenaAllocator); 3301 arena.* = std.heap.ArenaAllocator.init(allocator); 3302 errdefer freeArena(allocator, arena); 3303 3304 const new_root = try initCurrentRoot(allocator, arena, session); 3305 3306 try self.history.append(allocator, .{ .root = self.root, .route = previous_route, .arena = self.arena, .user_id = self.user_id }); 3307 // drop the oldest entry (freeing its widget tree and arena) once over cap 3308 if (self.history.items.len > max_history) { 3309 var oldest = self.history.orderedRemove(0); 3310 oldest.root.deinit(allocator); 3311 freeArena(allocator, oldest.arena); 3312 } 3313 self.root = new_root; 3314 self.arena = arena; 3315 self.user_id = session.userId(); 3316 return true; 3317 } 3318 return false; 3319 } 3320 }; 3321 3322 pub fn initRoot(allocator: std.mem.Allocator, page: *const Page, session: *Session) !Widget { 3323 const page_widget: Widget = switch (page.*) { 3324 .home => |*p| .{ .home = try .init(allocator, p, session) }, 3325 .user => |*p| .{ .user = try .init(allocator, p, session) }, 3326 .repo => |*p| .{ .repo = try .init(allocator, p, session) }, 3327 .fork => |*p| .{ .fork = try .init(allocator, p, session) }, 3328 .not_found => .{ .not_found = try .init(allocator, session) }, 3329 }; 3330 3331 chooseAnsiArtForNavigation(session); 3332 3333 // on the TUI/SSH, the page sits above a one-row footer showing its web 3334 // url, when there's a web UI to point at 3335 var root = if (session.is_terminal) blk: { 3336 var box = try wgt.Box(Widget).init(allocator, .{ .border = null, .direction = .vert }); 3337 errdefer box.deinit(allocator); 3338 const bg_id = bg_blk: { 3339 var background = try widget.AnsiBackground.init(allocator, page_widget, session); 3340 errdefer background.deinit(allocator); 3341 const id = background.getFocus().id; 3342 try box.children.put(allocator, id, .{ .widget = .{ .background = background }, .rect = null, .min_size = null }); 3343 break :bg_blk id; 3344 }; 3345 if (session.web_url != null) { 3346 var footer = try widget.Footer.init(allocator, session); 3347 errdefer footer.deinit(allocator); 3348 try box.children.put(allocator, footer.getFocus().id, .{ .widget = .{ .footer = footer }, .rect = null, .min_size = .{ .width = null, .height = 1 } }); 3349 } 3350 box.getFocus().child_id = bg_id; 3351 break :blk Widget{ .box = box }; 3352 } else Widget{ .background = try widget.AnsiBackground.init(allocator, page_widget, session) }; 3353 errdefer root.deinit(allocator); 3354 3355 // input-owning views build their TextInputs in init, so reset their 3356 // registrations here 3357 session.text_inputs.clearRetainingCapacity(); 3358 3359 try root.build(allocator, .{ 3360 .min_size = .{ .width = null, .height = 40 }, 3361 .max_size = .{ .width = 100, .height = null }, 3362 }, root.getFocus()); 3363 3364 return root; 3365 } 3366 3367 // native and server-side sessions choose from the embedded collection. WASM 3368 // keeps the art serialized by the server instead. 3369 fn chooseAnsiArtForNavigation(session: *Session) void { 3370 if (comptime ansi_art.art.len == 0) return; 3371 if (session.data.current_page == .not_found) { 3372 session.data.ansi_art = ansi_art.not_found; 3373 return; 3374 } 3375 const io = session.io orelse return; 3376 var random: usize = undefined; 3377 io.random(std.mem.asBytes(&random)); 3378 session.data.ansi_art = ansi_art.art[random % ansi_art.art.len]; 3379 } 3380