╭─────────────╮ │scroll to top│ ╰─────────────╯ ╭ ui.zig ───────────────────────────────────────────────────────╮ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ╰───────────────────────────────────────────────────────────────╯
🬐 🬠 🬞🬂🬏 🬟 🬑 🬟 🬑 ╭54966de4..╮ 54966de4.. see-em: 🬋🬋🬋 🬋🬋🬋 🬋 🬋 │files │ commits refs discuss issues new login 🬐 🬠 🬐 🬠 🬑 🬟 🬰 ╰──────────╯ (427) 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
1129 return null; // unknown sub-path 1130 } 1131 1132 pub fn eql(a: RoutablePage, b: RoutablePage) bool { 1133 if (std.meta.activeTag(a) != std.meta.activeTag(b)) return false; 1134 return switch (a) { 1135 .home_users => |a_start| a_start == b.home_users, 1136 .home_repos => |a_start| a_start == b.home_repos, 1137 .user_repos => |a_u| std.mem.eql(u8, a_u.name.slice(), b.user_repos.name.slice()) and a_u.start == b.user_repos.start, 1138 .user_forks => |a_u| std.mem.eql(u8, a_u.name.slice(), b.user_forks.name.slice()) and a_u.start == b.user_forks.start, 1139 .user_settings => |a_name| std.mem.eql(u8, a_name.slice(), b.user_settings.slice()), 1140 .user_auth => |a_name| std.mem.eql(u8, a_name.slice(), b.user_auth.slice()), 1141 .repo_files => |a_f| std.mem.eql(u8, a_f.name.slice(), b.repo_files.name.slice()) and 1142 a_f.ref_kind == b.repo_files.ref_kind and 1143 std.mem.eql(u8, a_f.ref_value.slice(), b.repo_files.ref_value.slice()) and 1144 std.mem.eql(u8, a_f.path.slice(), b.repo_files.path.slice()) and 1145 a_f.line == b.repo_files.line, 1146 .repo_commits => |a_c| std.mem.eql(u8, a_c.name.slice(), b.repo_commits.name.slice()) and 1147 a_c.ref_or_oid == b.repo_commits.ref_or_oid and 1148 std.mem.eql(u8, a_c.value.slice(), b.repo_commits.value.slice()) and 1149 switch (a_c.content) { 1150 .diff => |a_d| switch (b.repo_commits.content) { 1151 .diff => |b_d| a_d.start == b_d.start and std.mem.eql(u8, a_d.path.slice(), b_d.path.slice()), 1152 .message => false, 1153 }, 1154 .message => std.meta.activeTag(b.repo_commits.content) == .message, 1155 }, 1156 .repo_refs => |a_r| std.mem.eql(u8, a_r.name.slice(), b.repo_refs.name.slice()) and a_r.kind == b.repo_refs.kind and std.mem.eql(u8, a_r.from.slice(), b.repo_refs.from.slice()), 1157 .repo_issues => |a_i| std.mem.eql(u8, a_i.name.slice(), b.repo_issues.name.slice()) and 1158 std.mem.eql(u8, a_i.tag.slice(), b.repo_issues.tag.slice()) and 1159 std.mem.eql(u8, a_i.selected.slice(), b.repo_issues.selected.slice()) and 1160 std.mem.eql(u8, a_i.theirs.slice(), b.repo_issues.theirs.slice()) and 1161 a_i.view == b.repo_issues.view and 1162 a_i.comments_start == b.repo_issues.comments_start and 1163 std.mem.eql(u8, a_i.comment.slice(), b.repo_issues.comment.slice()), 1164 .repo_discussions => |a_t| std.mem.eql(u8, a_t.name.slice(), b.repo_discussions.name.slice()) and 1165 std.mem.eql(u8, a_t.tag.slice(), b.repo_discussions.tag.slice()) and 1166 std.mem.eql(u8, a_t.selected.slice(), b.repo_discussions.selected.slice()) and 1167 a_t.view == b.repo_discussions.view and 1168 a_t.comments_start == b.repo_discussions.comments_start and 1169 std.mem.eql(u8, a_t.comment.slice(), b.repo_discussions.comment.slice()), 1170 .repo_patches => |a_p| std.mem.eql(u8, a_p.name.slice(), b.repo_patches.name.slice()) and 1171 std.mem.eql(u8, a_p.tag.slice(), b.repo_patches.tag.slice()) and 1172 std.mem.eql(u8, a_p.selected.slice(), b.repo_patches.selected.slice()) and 1173 std.mem.eql(u8, a_p.theirs.slice(), b.repo_patches.theirs.slice()) and 1174 a_p.view == b.repo_patches.view and 1175 a_p.comments_start == b.repo_patches.comments_start and 1176 std.mem.eql(u8, a_p.comment.slice(), b.repo_patches.comment.slice()), 1177 .repo_events => |a_e| std.mem.eql(u8, a_e.name.slice(), b.repo_events.name.slice()) and 1178 a_e.view == b.repo_events.view and 1179 a_e.kind == b.repo_events.kind and 1180 std.mem.eql(u8, a_e.selected.slice(), b.repo_events.selected.slice()), 1181 .repo_settings => |a_name| std.mem.eql(u8, a_name.slice(), b.repo_settings.slice()), 1182 .repo_auth => |a_name| std.mem.eql(u8, a_name.slice(), b.repo_auth.slice()), 1183 else => true, 1184 }; 1185 } 1186 1187 // true when following a link from `b` to `a` (both repo routes) should reload 1188 // rather than stay in page 1189 pub fn repoPageChanged(a: RoutablePage, b: RoutablePage) bool { 1190 if (a.parent() != .repo or b.parent() != .repo) return false; 1191 if (std.meta.activeTag(a) == .repo_refs and std.meta.activeTag(b) == .repo_refs and 1192 a.repo_refs.from.len == 0 and b.repo_refs.from.len == 0) 1193 return !std.mem.eql(u8, a.repo_refs.name.slice(), b.repo_refs.name.slice()); 1194 return !a.eql(b); 1195 } 1196 1197 // true when `a` and `b` are the same user paginated to a different repos 1198 // window. switching between a user's tabs is in-page, so 1199 // only a changed `start` on the repos list navigates. 1200 pub fn userPageChanged(a: RoutablePage, b: RoutablePage) bool { 1201 return switch (a) { 1202 .user_repos => |aa| switch (b) { 1203 .user_repos => |bb| std.mem.eql(u8, aa.name.slice(), bb.name.slice()) and aa.start != bb.start, 1204 else => false, 1205 }, 1206 .user_forks => |aa| switch (b) { 1207 .user_forks => |bb| std.mem.eql(u8, aa.name.slice(), bb.name.slice()) and aa.start != bb.start, 1208 else => false, 1209 }, 1210 else => false, 1211 }; 1212 } 1213 1214 // true when `a` and `b` are the same home list tab paginated to a different 1215 // window. switching between the users/repos tabs is in-page (the home page 1216 // holds both lists), so only a changed `after` on the same tab navigates. 1217 pub fn homePageChanged(a: RoutablePage, b: RoutablePage) bool { 1218 return switch (a) { 1219 .home_users => |aa| switch (b) { 1220 .home_users => |bb| aa != bb, 1221 else => false, 1222 }, 1223 .home_repos => |aa| switch (b) { 1224 .home_repos => |bb| aa != bb, 1225 else => false, 1226 }, 1227 else => false, 1228 }; 1229 } 1230 }; 1231 1232 // a `RefOrOid` resolved against an on-disk repo to the commit oid it points at 1233 fn isUnreserved(c: u8) bool { 1234 return std.ascii.isAlphanumeric(c) or c == '-' or c == '.' or c == '_' or c == '~'; 1235 } 1236 1237 // percent-encode a ref name for use as a single url path segment. 1238 pub fn urlEncodeRef(aa: std.mem.Allocator, raw: []const u8) ![]const u8 { 1239 var out: std.Io.Writer.Allocating = .init(aa); 1240 try std.Uri.Component.percentEncode(&out.writer, raw, isUnreserved); 1241 return out.written(); 1242 } 1243 1244 // a resolved ref/oid for a repo opened with `repo_kind`/`repo_opts` 1245 pub fn ResolvedRefOrOid(comptime repo_kind: rp.RepoKind, comptime repo_opts: rp.RepoOpts(repo_kind)) type { 1246 return struct { 1247 pub const hex_len = hash.hexLen(repo_opts.hash); 1248 1249 // the concrete ref/oid (a null request resolves to the default branch) 1250 ref_or_oid: RoutablePage.RefOrOid, 1251 // its branch/tag name or oid, url-encoded (ref names may contain '/', so 1252 // the route layer — which splits on '/' — stores them encoded). duped 1253 // into `aa`. 1254 value: []const u8, 1255 // the commit oid it points at 1256 oid: [hex_len]u8, 1257 1258 const Self = @This(); 1259 1260 // resolve a requested ref/oid (null = the repo's default branch) to a 1261 // concrete ref/oid plus the commit oid it points at. `requested_value` is 1262 // the url-encoded form (as it appears in the route). null when it doesn't 1263 // resolve (an unknown branch/tag, or a malformed/unknown oid). 1264 pub fn init( 1265 repo: *rp.Repo(repo_kind, repo_opts), 1266 io: std.Io, 1267 aa: std.mem.Allocator, 1268 requested_ref_or_oid: ?RoutablePage.RefOrOid, 1269 requested_value: []const u8, 1270 ) !?Self { 1271 var ref_or_oid: RoutablePage.RefOrOid = requested_ref_or_oid orelse .branch; 1272 // the decoded ref name / oid to look up. a named ref arrives url-encoded. 1273 var value: []const u8 = if (requested_ref_or_oid == null) 1274 requested_value 1275 else 1276 std.Uri.percentDecodeInPlace(try aa.dupe(u8, requested_value)); 1277 // no ref named: fall back to HEAD's branch (or its oid when detached). 1278 if (requested_ref_or_oid == null) { 1279 var head_buf: [rf.MAX_REF_CONTENT_SIZE]u8 = undefined; 1280 if (repo.head(io, &head_buf)) |head| switch (head) { 1281 .ref => |r| { 1282 ref_or_oid = .branch; 1283 value = r.name; 1284 }, 1285 .oid => |o| { 1286 ref_or_oid = .object; 1287 value = o; 1288 }, 1289 } else |_| {} 1290 } 1291 1292 var oid: [hex_len]u8 = undefined; 1293 switch (ref_or_oid) { 1294 .object => { 1295 if (value.len != hex_len) return null; 1296 @memcpy(&oid, value); 1297 }, 1298 .branch, .tag => { 1299 const ref_kind: rf.RefKind = if (ref_or_oid == .branch) .head else .tag; 1300 oid = (repo.readRef(io, .{ .kind = ref_kind, .name = value }) catch null) orelse return null; 1301 }, 1302 } 1303 // store url-encoded so the route layer can hold the value verbatim. 1304 return .{ .ref_or_oid = ref_or_oid, .value = try urlEncodeRef(aa, value), .oid = oid }; 1305 } 1306 }; 1307 } 1308 1309 // where a repo page reads its on-disk repo from 1310 pub const RepoSource = struct { 1311 path: []const u8, 1312 repo_kind: rp.RepoKind, 1313 // the user's global git config, so local mode picks up their identity and 1314 // their signing and ssh settings. null on the server paths, which must not 1315 // read whoever runs the server. 1316 global_config_path: ?[]const u8 = null, 1317 1318 pub fn localInitOpts(self: RepoSource) rp.InitOpts { 1319 return .{ .path = self.path, .global_config_path = self.global_config_path }; 1320 } 1321 }; 1322 1323 // events created in local mode have no account behind them, so the commit 1324 // author comes from the repo's config, which the global config feeds into. 1325 pub const local_author_fallback = evt.CommitAuthor{ .name = "haxy", .email = "user@haxy" }; 1326 1327 pub fn localAuthor( 1328 src: RepoSource, 1329 io: std.Io, 1330 allocator: std.mem.Allocator, 1331 arena: *std.heap.ArenaAllocator, 1332 ) !evt.CommitAuthor { 1333 switch (src.repo_kind) { 1334 inline else => |repo_kind| { 1335 var any_repo = rp.AnyRepo(repo_kind, .{}).open(io, allocator, src.localInitOpts()) catch return local_author_fallback; 1336 defer any_repo.deinit(io, allocator); 1337 1338 switch (any_repo) { 1339 inline else => |*repo| { 1340 var config = try repo.listConfig(io, allocator); 1341 defer config.deinit(); 1342 1343 const user = config.sections.get("user") orelse return local_author_fallback; 1344 const name = user.get("name") orelse return local_author_fallback; 1345 const email = user.get("email") orelse return local_author_fallback; 1346 return .{ 1347 .name = try arena.allocator().dupe(u8, name), 1348 .email = try arena.allocator().dupe(u8, email), 1349 }; 1350 }, 1351 } 1352 }, 1353 } 1354 } 1355 1356 // per-connection mutable state. each SSH session / web session / local TUI 1357 // run gets its own. 1358 pub const Session = struct { 1359 data: Data = .{}, 1360 // session-lifetime allocations: login/user_id, persisted prefs, queued 1361 // actions. lives as long as the connection. 1362 arena: *std.heap.ArenaAllocator, 1363 // current page's allocations: page data and the page-scoped strings widgets 1364 // build (form actions, links). owned by Nav, swapped on each navigation, so 1365 // it doesn't accumulate over a long-lived session. on the web/wasm paths, 1366 // where a render is one-shot, this points at the same arena as `arena`. 1367 page_arena: *std.heap.ArenaAllocator, 1368 haxy_moment: ?evt.AdminDB.HashMap(.read_only) = null, // db cursor (null on the wasm side) 1369 // filesystem io and the path to <server>/repos, for opening on-disk repos 1370 // during page construction. both null on wasm, which has no filesystem and 1371 // rebuilds pages from the serialized snapshot rather than from disk. 1372 io: ?std.Io = null, 1373 admin_repo: ?*rp.Repo(.xit, evt.admin_repo_opts) = null, 1374 repos_dir: ?[]const u8 = null, 1375 // the single on-disk repo this session views, when running in local mode 1376 // (haxy invoked with no arguments inside a repo). null on the server paths, 1377 // which resolve repos from the admin db instead. 1378 local: ?RepoSource = null, 1379 pending: std.ArrayList(Action) = .empty, // actions queued by widgets this frame 1380 // focus id -> the live TextInput, refreshed each frame by the views that own 1381 // inputs. web/wasm form handling looks widgets up here by focus id. 1382 text_inputs: std.AutoHashMapUnmanaged(usize, *wgt.TextInput) = .empty, 1383 // focus id -> the page-constant text the web renderer puts in an input 1384 // initially, refreshed each frame alongside `text_inputs`. never an 1385 // editable input's live content: the overlay html must not change as the 1386 // user types, or the diff in _setOverlay would rebuild the element. 1387 input_values: std.AutoHashMapUnmanaged(usize, []const u8) = .empty, 1388 nav_back: bool = false, // set by input (escape) to request the native TUI pop a page; see Nav 1389 refresh_requested: bool = false, // set by input (ctrl+r) 1390 // a requested forward navigation. set this (via navigate) to move to a new 1391 // page; Nav.sync builds it and then copies it into current_page, clearing 1392 // this back to null. setting current_page directly only updates the url and 1393 // does not navigate. 1394 next_page: ?RoutablePage = null, 1395 is_terminal: bool = false, // true on remote SSH and local TUI 1396 // port the web UI is served on, for the TUI/SSH footer's "http://localhost:<port>..." 1397 // url. null on the web itself (no footer there). 1398 web_port: ?u16 = null, 1399 // a host operation requested by a widget 1400 host_request: ?HostRequest = null, 1401 quit_requested: bool = false, 1402 1403 pub const HostRequest = union(enum) { 1404 show_copyable_text: []const u8, 1405 sync_events, 1406 }; 1407 1408 const Self = @This(); 1409 1410 // serializable data sent down to web client 1411 pub const Data = struct { 1412 user_id: ?[]const u8 = null, 1413 // the logged-in user's name, for the views that show it 1414 user_name: ?[]const u8 = null, 1415 // a transient outcome to surface from the last /login POST attempt 1416 login_failure: ?Home.Auth.Login.Failure = null, 1417 // a transient local event-sync error 1418 sync_failure: ?[]const u8 = null, 1419 current_page: RoutablePage = .default, 1420 // whether to render the ANSI art backdrop 1421 enable_ansi: bool = true, 1422 // the selected ANSI art. the server serializes one image for WASM so 1423 // the browser does not need the whole build-generated collection. 1424 ansi_art: []const u8 = "", 1425 // the bound git-service ports. absent in local mode, where remote urls 1426 // are not shown. 1427 git_http_port: ?u16 = null, 1428 git_ssh_port: ?u16 = null, 1429 git_ssh_prefix: []const u8 = "", 1430 // true when this session views a single local repo. unlike `local` 1431 // (the host-side filesystem source) this travels in the snapshot, so 1432 // the wasm side also parses elided link urls and hides the multi-user 1433 // chrome. 1434 is_local: bool = false, 1435 }; 1436 1437 // a user-initiated state change. widgets enqueue these on the session during 1438 // input instead of mutating state or touching the DB themselves; the host 1439 // drains them each frame (see applyAndWritePending / applyPending). this keeps DB 1440 // side effects out of the widget tree and gives every render path one place to 1441 // turn a UI action into a state change + event. 1442 pub const Action = union(enum) { 1443 toggle_ansi, 1444 }; 1445 1446 pub fn init( 1447 arena: *std.heap.ArenaAllocator, 1448 repo: *rp.Repo(.xit, evt.admin_repo_opts), 1449 data: Data, 1450 ) !Self { 1451 var session = Self{ 1452 .data = data, 1453 .arena = arena, 1454 // until a host swaps in a page-scoped arena (Nav does this), page 1455 // allocations land in the session arena. on the web path that's the 1456 // intended behavior, since the whole arena is per-request. 1457 .page_arena = arena, 1458 .admin_repo = repo, 1459 .haxy_moment = try evt.currentMoment(evt.admin_repo_opts, repo), 1460 }; 1461 try session.loadUser(); 1462 return session; 1463 } 1464 1465 // load the logged-in user's name and persisted preferences from the db 1466 pub fn loadUser(self: *Self) !void { 1467 const user_id = self.data.user_id orelse return; 1468 const moment = self.haxy_moment orelse return; 1469 if (try evt.User.readById(evt.AdminDB, evt.admin_repo_opts.hash, moment, self.arena, user_id)) |user| { 1470 self.data.user_name = user.event.name; 1471 self.data.enable_ansi = user.event.enable_ansi; 1472 } 1473 } 1474 1475 // the commit author for an event this session creates, or null when it may 1476 // not create one 1477 pub fn eventAuthor(self: *Self) !?evt.CommitAuthor { 1478 if (self.data.is_local) { 1479 const src = self.local orelse return local_author_fallback; 1480 const io = self.io orelse return local_author_fallback; 1481 return try localAuthor(src, io, self.page_arena.child_allocator, self.page_arena); 1482 } 1483 const user_id = self.data.user_id orelse return null; 1484 const moment = self.haxy_moment orelse return null; 1485 const user = (try evt.User.readById(evt.AdminDB, evt.admin_repo_opts.hash, moment, self.page_arena, user_id)) orelse return null; 1486 return .{ .name = user.event.name, .email = user.event.email }; 1487 } 1488 1489 // queue an action for the host to drain this frame. 1490 pub fn push(self: *Self, action: Action) !void { 1491 try self.pending.append(self.arena.allocator(), action); 1492 } 1493 1494 // apply a single action's in-memory effect only (no persistence). 1495 fn apply(self: *Self, action: Action) void { 1496 switch (action) { 1497 .toggle_ansi => self.data.enable_ansi = !self.data.enable_ansi, 1498 } 1499 } 1500 1501 // drain the session's queued actions by applying them to the session. 1502 // used on the wasm path, which has no repo to persist to. 1503 pub fn applyPending(self: *Self) void { 1504 for (self.pending.items) |action| self.apply(action); 1505 self.pending.clearRetainingCapacity(); 1506 } 1507 1508 // drain the session's queued actions by applying them to the session and 1509 // writing them to the db 1510 pub fn applyAndWritePending( 1511 self: *Self, 1512 io: std.Io, 1513 allocator: std.mem.Allocator, 1514 repo: *rp.Repo(.xit, evt.admin_repo_opts), 1515 ) !void { 1516 defer self.pending.clearRetainingCapacity(); 1517 for (self.pending.items) |action| { 1518 self.apply(action); 1519 switch (action) { 1520 .toggle_ansi => if (self.data.user_id) |user_id| { 1521 try evt.User.toggleAnsi(evt.admin_repo_opts, io, allocator, repo, user_id); 1522 }, 1523 } 1524 } 1525 } 1526 1527 // reload the moment from the admin repo and re-read user preferences 1528 pub fn reloadMoment(self: *Self, allocator: std.mem.Allocator, repo: *rp.Repo(.xit, evt.admin_repo_opts)) !void { 1529 const moment = try evt.currentMoment(evt.admin_repo_opts, repo); 1530 self.haxy_moment = moment; 1531 1532 const user_id = self.data.user_id orelse return; 1533 var arena = std.heap.ArenaAllocator.init(allocator); 1534 defer arena.deinit(); 1535 if (try evt.User.readById(evt.AdminDB, evt.admin_repo_opts.hash, moment, &arena, user_id)) |user| { 1536 self.data.enable_ansi = user.event.enable_ansi; 1537 } 1538 } 1539 1540 // request a forward navigation to `route`; the host consumes next_page 1541 // (Nav.sync on the terminal, the wasm tick on the web). 1542 pub fn navigate(self: *Session, route: RoutablePage) !void { 1543 self.next_page = route; 1544 } 1545 }; 1546 1547 pub fn run(io: std.Io, allocator: std.mem.Allocator, session: *Session, repo_maybe: ?*rp.Repo(.xit, evt.admin_repo_opts)) !void { 1548 var nav = try Nav.init(allocator, session); 1549 defer nav.deinit(allocator); 1550 1551 var terminal = try term.Terminal.init(io, allocator); 1552 var terminal_live = true; 1553 defer if (terminal_live) terminal.deinit(io); 1554 1555 // set term as active so it will be properly cooked 1556 // when a panic/segfault happens 1557 term.setActive(&terminal); 1558 defer term.setActive(null); 1559 1560 while (!terminal.shouldQuit()) { 1561 const grid_changed = try terminal.render(&nav.root); 1562 1563 // process any inputs. 1564 // 1565 // if the grid didn't change, then first do a blocking 1566 // read, so the thread will sleep until further input. 1567 // after that, all remaining reads are non-blocking so 1568 // we can process the rest of the queued inputs. 1569 // 1570 // if the grid *did* change, then only do non-blocking 1571 // reads. we do not want to sleep the thread because 1572 // there may be an animation that requires more looping. 1573 var blocking = !grid_changed; 1574 while (try terminal.readKey(io, blocking)) |key| { 1575 blocking = false; 1576 try inputKey(allocator, &nav.root, key, session); 1577 } 1578 1579 if (session.host_request) |request| { 1580 session.host_request = null; 1581 switch (request) { 1582 .show_copyable_text => |copyable_text| { 1583 term.setActive(null); 1584 terminal.deinit(io); 1585 terminal_live = false; 1586 showCopyableText(io, copyable_text) catch |show_err| { 1587 terminal = try term.Terminal.init(io, allocator); 1588 terminal_live = true; 1589 term.setActive(&terminal); 1590 return show_err; 1591 }; 1592 terminal = try term.Terminal.init(io, allocator); 1593 terminal_live = true; 1594 term.setActive(&terminal); 1595 }, 1596 .sync_events => { 1597 try nav.root.build(allocator, .{ 1598 .min_size = .{ .width = null, .height = null }, 1599 .max_size = .{ .width = terminal.size.width, .height = terminal.size.height }, 1600 }, nav.root.getFocus()); 1601 _ = try terminal.render(&nav.root); 1602 try Repo.Events.performSync(allocator, session); 1603 }, 1604 } 1605 } 1606 1607 // persist queued actions when there's a repo; local mode has none, 1608 // so just apply in-memory 1609 if (repo_maybe) |repo| { 1610 try session.applyAndWritePending(io, allocator, repo); 1611 // reload so the next navigation builds its page from the current moment 1612 try session.reloadMoment(allocator, repo); 1613 } else { 1614 session.applyPending(); 1615 } 1616 1617 // reconcile navigation: forward to a new page, or back on escape. 1618 try nav.sync(allocator, session); 1619 1620 // the quit button (on the quit tab) asks the host to tear down. 1621 if (session.quit_requested) terminal.requestQuit(); 1622 1623 try nav.root.build(allocator, .{ 1624 .min_size = .{ .width = null, .height = null }, 1625 .max_size = .{ .width = terminal.size.width, .height = terminal.size.height }, 1626 }, nav.root.getFocus()); 1627 } 1628 } 1629 1630 fn showCopyableText(io: std.Io, copyable_text: []const u8) !void { 1631 const tty: ?std.Io.File = if (builtin.os.tag == .windows) 1632 null 1633 else 1634 try std.Io.Dir.cwd().openFile(io, "/dev/tty", .{ .mode = .read_write }); 1635 defer if (tty) |file| file.close(io); 1636 1637 const input = if (tty) |file| file else std.Io.File.stdin(); 1638 const output = if (tty) |file| file else std.Io.File.stdout(); 1639 1640 var write_buf: [1024]u8 = undefined; 1641 var writer = output.writer(io, &write_buf); 1642 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}); 1643 try writer.interface.flush(); 1644 1645 var read_buf: [1]u8 = undefined; 1646 var reader = input.reader(io, &read_buf); 1647 while (true) { 1648 const byte = try reader.interface.takeByte(); 1649 if (byte == '\r' or byte == '\n') return; 1650 } 1651 } 1652 1653 pub fn inputKey(allocator: std.mem.Allocator, root: *Widget, key: Key, session: *Session) !void { 1654 const root_focus = root.getFocus(); 1655 const focused_before = root_focus.grandchild_id; 1656 var activate_in_page_link = false; 1657 switch (key) { 1658 // request a navigation pop; the host's Nav.sync goes back a page, or 1659 // quits when there's no history left. 1660 .escape => { 1661 session.nav_back = true; 1662 return; 1663 }, 1664 .ctrl => |letter| switch (letter) { 1665 'r' => { 1666 session.refresh_requested = true; 1667 return; 1668 }, 1669 else => try root.input(allocator, key, root_focus), 1670 }, 1671 .enter => { 1672 if (root_focus.grandchild_id) |gid| { 1673 // follow a cross-page link 1674 if (crossPageLink(root_focus, gid, session.data)) |route| { 1675 return session.navigate(route); 1676 } 1677 if (rawLink(root_focus, gid)) |url| return requestRawLink(session, url); 1678 } 1679 activate_in_page_link = true; 1680 try root.input(allocator, key, root_focus); 1681 }, 1682 .mouse => |mouse| { 1683 if (mouse.action == .press and mouse.action.press == .left) { 1684 var clicked: ?usize = null; 1685 var iter = root_focus.children.iterator(); 1686 while (iter.next()) |entry| { 1687 const child = entry.value_ptr.*; 1688 if (!child.focus.focusable) continue; 1689 const r = child.rect; 1690 if (mouse.x >= r.x and mouse.y >= r.y and 1691 mouse.x < r.x + r.size.width and mouse.y < r.y + r.size.height) 1692 { 1693 clicked = entry.key_ptr.*; 1694 break; 1695 } 1696 } 1697 if (clicked) |focus_id| { 1698 // follow a cross-page link 1699 if (crossPageLink(root_focus, focus_id, session.data)) |route| { 1700 return session.navigate(route); 1701 } 1702 if (rawLink(root_focus, focus_id)) |url| { 1703 if (!mouse.ctrl) try requestRawLink(session, url); 1704 return; 1705 } 1706 root_focus.setFocus(focus_id); 1707 activate_in_page_link = true; 1708 } 1709 // forward the press into the widget tree so buttons (and any 1710 // future click-aware widgets) can react. widgets that don't 1711 // care about presses ignore it. 1712 try root.input(allocator, key, root_focus); 1713 } else { 1714 try root.input(allocator, key, root_focus); 1715 } 1716 }, 1717 else => try root.input(allocator, key, root_focus), 1718 } 1719 1720 const focused_after = root_focus.grandchild_id; 1721 if (!activate_in_page_link and focused_before == focused_after) return; 1722 const focus_id = focused_after orelse return; 1723 if (inPageLink(root_focus, focus_id, session.data)) |route| session.data.current_page = route; 1724 } 1725 1726 // a link to bytes the server serves directly rather than to a page route, so 1727 // it never resolves to a RoutablePage 1728 pub const raw_link_prefix = "ax:"; 1729 1730 // a route already loaded into the current page; focusing it changes the url 1731 // without rebuilding the page 1732 pub const in_page_link_prefix = "ai:"; 1733 1734 // an in-page tab's base route, or the exact current route when it is selected 1735 pub fn inPageTabLink(session: *Session, route: RoutablePage, selected: bool) ![]const u8 { 1736 const target = if (selected) session.data.current_page else route; 1737 return std.fmt.allocPrint(session.page_arena.allocator(), "{s}{s}", .{ in_page_link_prefix, try target.toUrl(session.page_arena) }); 1738 } 1739 1740 // a button the web overlay covers with a file picker that posts the chosen 1741 // file to the url after the prefix 1742 pub const file_input_prefix = "file:"; 1743 1744 // a submit button that overrides its enclosing form's action 1745 pub const submit_action_prefix = "submit:"; 1746 1747 // the url an `ax:` link points at, or null for anything else. a host that 1748 // suppresses the anchor's own navigation needs this to follow the link. 1749 pub fn rawLink(root_focus: *Focus, focus_id: usize) ?[]const u8 { 1750 const child = root_focus.children.get(focus_id) orelse return null; 1751 const custom = switch (child.focus.kind) { 1752 .custom => |c| c, 1753 else => return null, 1754 }; 1755 if (!std.mem.startsWith(u8, custom, raw_link_prefix)) return null; 1756 return custom[raw_link_prefix.len..]; 1757 } 1758 1759 fn requestRawLink(session: *Session, url: []const u8) !void { 1760 session.host_request = .{ .show_copyable_text = try terminalWebUrl(session.page_arena.allocator(), session, url) }; 1761 } 1762 1763 pub fn terminalWebUrl(allocator: std.mem.Allocator, session: *const Session, path: []const u8) ![]const u8 { 1764 return if (session.web_port) |port| 1765 try std.fmt.allocPrint(allocator, "http://localhost:{d}{s}", .{ port, path }) 1766 else 1767 path; 1768 } 1769 1770 // if the focus target at focus_id is an `a:` link that should navigate (a 1771 // different parent page, or a different files directory within the repo page), 1772 // return its route; otherwise null. lets a host turn a click / enter on such a 1773 // link into a navigation rather than a focus change. 1774 pub fn crossPageLink(root_focus: *Focus, focus_id: usize, data: Session.Data) ?RoutablePage { 1775 const current = data.current_page; 1776 const route = pageLink(root_focus, focus_id, data, "a:") orelse return null; 1777 // a link to a different parent page always navigates; within a page, a 1778 // files-directory / commits-page / list-window change navigates while tab 1779 // links stay in-page. 1780 if (route.parent() != current.parent() or RoutablePage.repoPageChanged(route, current) or RoutablePage.homePageChanged(route, current) or RoutablePage.userPageChanged(route, current)) return route; 1781 return null; 1782 } 1783 1784 // the route carried by an `ai:` focus target, or null for any other target 1785 pub fn inPageLink(root_focus: *Focus, focus_id: usize, data: Session.Data) ?RoutablePage { 1786 return pageLink(root_focus, focus_id, data, in_page_link_prefix); 1787 } 1788 1789 fn pageLink(root_focus: *Focus, focus_id: usize, data: Session.Data, prefix: []const u8) ?RoutablePage { 1790 const child = root_focus.children.get(focus_id) orelse return null; 1791 const custom = switch (child.focus.kind) { 1792 .custom => |c| c, 1793 else => return null, 1794 }; 1795 if (!std.mem.startsWith(u8, custom, prefix)) return null; 1796 const path = custom[prefix.len..]; 1797 // local sessions build (and parse) links with the repo identity elided 1798 return if (data.is_local) RoutablePage.fromUrlLocal(path) else RoutablePage.fromUrl(path); 1799 } 1800 1801 // a display author, resolved against the admin db at read time 1802 pub const Author = union(enum) { 1803 unknown, 1804 email: []const u8, // an email no user matches 1805 user_name: []const u8, 1806 1807 // the commit author line's email, resolved like initFromEmail 1808 pub fn init( 1809 haxy_moment: ?evt.AdminDB.HashMap(.read_only), 1810 arena: *std.heap.ArenaAllocator, 1811 author_line: []const u8, 1812 ) !Author { 1813 return initFromEmail(haxy_moment, arena, evt.authorEmail(author_line)); 1814 } 1815 1816 // from a record's stored author email: it resolves to the user currently 1817 // holding it, else stays the email. the result is allocated in `arena`, 1818 // so the email may borrow transient memory. 1819 pub fn initFromEmail( 1820 haxy_moment: ?evt.AdminDB.HashMap(.read_only), 1821 arena: *std.heap.ArenaAllocator, 1822 author_email: ?[]const u8, 1823 ) !Author { 1824 const email = author_email orelse return .unknown; 1825 if (haxy_moment) |moment| { 1826 if (try evt.User.readByEmail(evt.AdminDB, evt.admin_repo_opts.hash, moment, arena, email)) |user| { 1827 return .{ .user_name = user.event.name }; 1828 } 1829 } 1830 return .{ .email = try arena.allocator().dupe(u8, email) }; 1831 } 1832 }; 1833 1834 // the "a:" link to user `name`'s page. 1835 pub fn userLink(page_arena: *std.heap.ArenaAllocator, name: []const u8) ![]const u8 { 1836 const parsed = RoutablePage.Array(evt.User.name_max_len).from(name) orelse return error.RouteTooLong; 1837 const url = try (RoutablePage{ .user_repos = .{ .name = parsed } }).toUrl(page_arena); 1838 return std.fmt.allocPrint(page_arena.allocator(), "a:{s}", .{url}); 1839 } 1840 1841 // a focusable " author " box showing `author`, linking to their user page 1842 // when it is a known user 1843 pub fn authorBox(allocator: std.mem.Allocator, page_arena: *std.heap.ArenaAllocator, author: Author) !wgt.TextBox { 1844 const text = switch (author) { 1845 .unknown => "", 1846 .email, .user_name => |t| t, 1847 }; 1848 var tb = try wgt.TextBox.init(allocator, text, .{ .border_style = .single, .rounded_corners = true, .wrap_kind = .none, .label = " author " }); 1849 errdefer tb.deinit(allocator); 1850 tb.getFocus().focusable = true; 1851 switch (author) { 1852 .user_name => |name| tb.getFocus().kind = .{ .custom = try userLink(page_arena, name) }, 1853 else => {}, 1854 } 1855 return tb; 1856 } 1857 1858 // native-TUI navigation 1859 pub const Nav = struct { 1860 root: Widget, 1861 route: RoutablePage, 1862 // backs the current page (its Page data and the page-scoped strings its 1863 // widgets build). owned here, swapped on each navigation. session.page_arena 1864 // tracks whichever of these is current so widgets allocate into it. 1865 arena: *std.heap.ArenaAllocator, 1866 history: std.ArrayList(Entry), 1867 1868 // each retained page keeps its own arena, freed when the page leaves the 1869 // stack (popped on back, evicted at cap, or on deinit). this is what keeps a 1870 // long-lived session from accumulating every page it ever visited. 1871 const Entry = struct { root: Widget, route: RoutablePage, arena: *std.heap.ArenaAllocator }; 1872 1873 // cap on retained back-history so the chain can't grow memory without bound 1874 const max_history: usize = 16; 1875 1876 pub fn init(allocator: std.mem.Allocator, session: *Session) !Nav { 1877 const arena = try allocator.create(std.heap.ArenaAllocator); 1878 arena.* = std.heap.ArenaAllocator.init(allocator); 1879 errdefer { 1880 arena.deinit(); 1881 allocator.destroy(arena); 1882 } 1883 1884 session.page_arena = arena; 1885 const route = session.data.current_page; 1886 1887 const page = try arena.allocator().create(Page); 1888 page.* = try Page.init(arena, session, route); 1889 return .{ 1890 .root = try initRoot(allocator, page, session), 1891 .route = route, 1892 .arena = arena, 1893 .history = .empty, 1894 }; 1895 } 1896 1897 pub fn deinit(self: *Nav, allocator: std.mem.Allocator) void { 1898 self.root.deinit(allocator); 1899 freeArena(allocator, self.arena); 1900 for (self.history.items) |*entry| { 1901 entry.root.deinit(allocator); 1902 freeArena(allocator, entry.arena); 1903 } 1904 self.history.deinit(allocator); 1905 } 1906 1907 fn freeArena(allocator: std.mem.Allocator, arena: *std.heap.ArenaAllocator) void { 1908 arena.deinit(); 1909 allocator.destroy(arena); 1910 } 1911 1912 // reconcile the displayed root with the session's navigation state. a 1913 // forward nav (current_page moved to a different parent page) pushes the 1914 // current root and builds the new page in a fresh arena; a back request 1915 // frees the current page and restores the previous one. when escape is 1916 // pressed with no history left we switch to the quit tab instead of quitting. 1917 pub fn sync(self: *Nav, allocator: std.mem.Allocator, session: *Session) !void { 1918 // refresh: rebuild the current page in place from a current moment 1919 if (session.refresh_requested) { 1920 session.refresh_requested = false; 1921 if (session.haxy_moment != null or session.local != null) { 1922 const arena = try allocator.create(std.heap.ArenaAllocator); 1923 arena.* = std.heap.ArenaAllocator.init(allocator); 1924 errdefer freeArena(allocator, arena); 1925 1926 session.page_arena = arena; 1927 1928 const route = session.data.current_page; 1929 const page = try arena.allocator().create(Page); 1930 page.* = try Page.init(arena, session, route); 1931 const new_root = try initRoot(allocator, page, session); 1932 1933 self.root.deinit(allocator); 1934 freeArena(allocator, self.arena); 1935 self.root = new_root; 1936 self.route = route; 1937 self.arena = arena; 1938 } 1939 return; 1940 } 1941 1942 if (session.nav_back) { 1943 session.nav_back = false; 1944 if (self.history.pop()) |entry| { 1945 self.root.deinit(allocator); 1946 freeArena(allocator, self.arena); 1947 self.root = entry.root; 1948 self.route = entry.route; 1949 self.arena = entry.arena; 1950 session.page_arena = entry.arena; 1951 session.data.current_page = entry.route; 1952 chooseAnsiArtForNavigation(session); 1953 return; 1954 } 1955 // nothing to go back to; switch to the quit confirmation 1956 const root_focus = self.root.getFocus(); 1957 var iter = root_focus.children.iterator(); 1958 while (iter.next()) |entry| { 1959 switch (entry.value_ptr.focus.kind) { 1960 .custom => |custom| if (std.mem.eql(u8, custom, Quit.tab_kind)) { 1961 root_focus.setFocus(entry.key_ptr.*); 1962 // a Stack only builds its selected child, so the quit 1963 // button isn't in the focus tree until a build runs with 1964 // the quit tab selected. build once, then send a 1965 // synthetic arrow_down to drop focus from the tab onto 1966 // the button so it's ready to confirm. 1967 try self.root.build(allocator, .{ 1968 .min_size = .{ .width = null, .height = 40 }, 1969 .max_size = .{ .width = 80, .height = null }, 1970 }, root_focus); 1971 try self.root.input(allocator, .arrow_down, root_focus); 1972 break; 1973 }, 1974 else => {}, 1975 } 1976 } 1977 return; 1978 } 1979 1980 // forward navigation: navigate() set next_page to the page to move to (a 1981 // cross-page link or tab change crossing pages) 1982 if (session.next_page) |route| { 1983 session.next_page = null; 1984 if (session.haxy_moment == null and session.local == null) return; 1985 // the page we navigated to becomes the current page 1986 session.data.current_page = route; 1987 1988 const arena = try allocator.create(std.heap.ArenaAllocator); 1989 arena.* = std.heap.ArenaAllocator.init(allocator); 1990 errdefer freeArena(allocator, arena); 1991 1992 session.page_arena = arena; 1993 1994 const page = try arena.allocator().create(Page); 1995 page.* = try Page.init(arena, session, route); 1996 const new_root = try initRoot(allocator, page, session); 1997 1998 try self.history.append(allocator, .{ .root = self.root, .route = self.route, .arena = self.arena }); 1999 // drop the oldest entry (freeing its widget tree and arena) once over cap 2000 if (self.history.items.len > max_history) { 2001 var oldest = self.history.orderedRemove(0); 2002 oldest.root.deinit(allocator); 2003 freeArena(allocator, oldest.arena); 2004 } 2005 self.root = new_root; 2006 self.route = route; 2007 self.arena = arena; 2008 } 2009 } 2010 }; 2011 2012 pub fn initRoot(allocator: std.mem.Allocator, page: *const Page, session: *Session) !Widget { 2013 const page_widget: Widget = switch (page.*) { 2014 .home => |*p| .{ .home = try .init(allocator, p, session) }, 2015 .user => |*p| .{ .user = try .init(allocator, p, session) }, 2016 .repo => |*p| .{ .repo = try .init(allocator, p, session) }, 2017 }; 2018 2019 chooseAnsiArtForNavigation(session); 2020 2021 // on the TUI/SSH, the page sits above a one-row footer showing the url 2022 var root = if (session.is_terminal) blk: { 2023 var box = try wgt.Box(Widget).init(allocator, .{ .border_style = null, .direction = .vert }); 2024 errdefer box.deinit(allocator); 2025 const bg_id = bg_blk: { 2026 var background = try widget.AnsiBackground.init(allocator, page_widget, session); 2027 errdefer background.deinit(allocator); 2028 const id = background.getFocus().id; 2029 try box.children.put(allocator, id, .{ .widget = .{ .background = background }, .rect = null, .min_size = null }); 2030 break :bg_blk id; 2031 }; 2032 { 2033 var footer = try widget.Footer.init(allocator, session); 2034 errdefer footer.deinit(allocator); 2035 try box.children.put(allocator, footer.getFocus().id, .{ .widget = .{ .footer = footer }, .rect = null, .min_size = .{ .width = null, .height = 1 } }); 2036 } 2037 box.getFocus().child_id = bg_id; 2038 break :blk Widget{ .box = box }; 2039 } else Widget{ .background = try widget.AnsiBackground.init(allocator, page_widget, session) }; 2040 errdefer root.deinit(allocator); 2041 2042 // input-owning views build their TextInputs in init, so reset their 2043 // registrations here 2044 session.text_inputs.clearRetainingCapacity(); 2045 session.input_values.clearRetainingCapacity(); 2046 2047 try root.build(allocator, .{ 2048 .min_size = .{ .width = null, .height = 40 }, 2049 .max_size = .{ .width = 100, .height = null }, 2050 }, root.getFocus()); 2051 2052 return root; 2053 } 2054 2055 // native and server-side sessions choose from the embedded collection. WASM 2056 // keeps the art serialized by the server instead. 2057 fn chooseAnsiArtForNavigation(session: *Session) void { 2058 if (comptime ansi_arts.len == 0) return; 2059 const io = session.io orelse return; 2060 var random: usize = undefined; 2061 io.random(std.mem.asBytes(&random)); 2062 session.data.ansi_art = ansi_arts[random % ansi_arts.len]; 2063 } 2064