╭─────────────╮ │scroll to top│ ╰─────────────╯ ╭ Files.zig ────────────────────────────────────────────────────╮ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ╰───────────────────────────────────────────────────────────────╯
🬐 🬠 🬞🬂🬏 🬟 🬑 🬟 🬑 ╭ca9967ca..╮ ca9967ca.. see-em: 🬋🬋🬋 🬋🬋🬋 🬋 🬋 │files │ commits refs discuss issues new login 🬐 🬠 🬐 🬠 🬑 🬟 🬰 ╰──────────╯ (433) user
╭────╮ ╭ clone ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ╮ │http│ ssh │ │ ╰────╯ ╰ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ╯
.. Attachment.zig Comment.zig Commits.zig Discussions.zig Events.zig ╭─────────────────────────────────╮ │Files.zig │ ╰─────────────────────────────────╯ Header.zig Issues.zig Patches.zig Refs.zig
142 entries[i] = entry; 143 i += 1; 144 } 145 } 146 147 return .{ 148 .location = try location.dupe(aa), 149 .ref_or_oid = resolved.ref_or_oid, 150 .ref_or_oid_value = resolved.value, 151 .dir = try aa.dupe(u8, dir), 152 .selected_file = selected_file, 153 .entries = entries, 154 .header = try Header.init(aa, resolved.ref_or_oid, resolved.value), 155 }; 156 } 157 158 const FileContent = struct { 159 lines: []const []const u8, 160 is_binary: bool = false, 161 has_more: bool = false, 162 }; 163 164 // read the window [start, start+file_page) of a committed file's contents at 165 // `tree_entry` into `arena`-owned lines, flagging whether more follow. xit's 166 // line iterator flags binary files (its source becomes `.binary`), in which case 167 // we report no lines and let the view show a placeholder. 168 fn readFileContent( 169 comptime repo_kind: rp.RepoKind, 170 comptime repo_opts: rp.RepoOpts(repo_kind), 171 state: rp.Repo(repo_kind, repo_opts).State(.read_only), 172 io: std.Io, 173 gpa: std.mem.Allocator, 174 arena: std.mem.Allocator, 175 path: []const u8, 176 tree_entry: tr.TreeEntry(repo_opts.hash), 177 start: usize, 178 ) !FileContent { 179 var line_iter = try df.LineIterator(repo_kind, repo_opts).initFromTree(state, io, gpa, path, tree_entry); 180 defer line_iter.deinit(); 181 if (line_iter.source == .binary) return .{ .lines = &.{}, .is_binary = true }; 182 183 // init reads through the file to validate it (and buffer it in memory), so 184 // the line count is known and a window can be sliced out of the buffer. 185 const total = line_iter.count(); 186 const end = @min(start + file_page, total); 187 188 var lines: std.ArrayList([]const u8) = .empty; 189 var i = start; 190 while (i < end) : (i += 1) { 191 const line = try line_iter.get(i); 192 defer line_iter.free(line); 193 try lines.append(arena, try arena.dupe(u8, line)); 194 } 195 return .{ 196 .lines = try lines.toOwnedSlice(arena), 197 .has_more = end < total, 198 }; 199 } 200 201 // an empty listing pinned to a ref, for the wasm / no-repo / unresolved paths. 202 pub fn emptyResult(aa: std.mem.Allocator, location: ui.RoutablePage.RepoLocation, ref_or_oid: ui.RoutablePage.RefOrOid, ref_or_oid_value: []const u8, dir: []const u8) !Self { 203 return .{ 204 .location = try location.dupe(aa), 205 .ref_or_oid = ref_or_oid, 206 .ref_or_oid_value = try aa.dupe(u8, ref_or_oid_value), 207 .dir = try aa.dupe(u8, dir), 208 .entries = &.{}, 209 .header = try Header.init(aa, ref_or_oid, ref_or_oid_value), 210 }; 211 } 212 213 pub const View = struct { 214 // a vertical stack: the "viewing <ref>" banner on top, then a horizontal 215 // split with the file/directory list on the left and a detail pane on the 216 // right showing the selected file's contents. 217 box: wgt.Box(ui.Widget), // vert: [header_index] = banner, [content_index] = split 218 data: *const Self, 219 session: *ui.Session, 220 // the list row whose contents the detail pane currently shows. 221 shown_index: ?usize, 222 223 const header_index: usize = 0; 224 const content_index: usize = 1; 225 // indices within the content box (the horizontal split). 226 const list_index: usize = 0; 227 const detail_index: usize = 1; 228 // indices within the detail pane frame (nav box above the content scroll). 229 const detail_nav_index: usize = 0; 230 const detail_scroll_index: usize = 1; 231 const list_max_width: usize = 35; 232 const detail_min_width: usize = 40; 233 // a list row's height: one text line inside its (hidden) border. 234 const row_height: usize = 3; 235 236 pub fn init(allocator: std.mem.Allocator, data: *const Self, session: *ui.Session) !View { 237 var outer = try wgt.Box(ui.Widget).init(allocator, .{ .border_style = null, .direction = .vert }); 238 errdefer outer.deinit(allocator); 239 240 // the ref banner at the top. 241 { 242 var header_view = try Header.View.init(allocator, &data.header, session, data.location); 243 errdefer header_view.deinit(allocator); 244 try outer.children.put(allocator, header_view.getFocus().id, .{ .widget = .{ .repo_files_header = header_view }, .rect = null, .min_size = .{ .width = null, .height = 3 } }); 245 } 246 247 var box = try wgt.Box(ui.Widget).init(allocator, .{ .border_style = null, .direction = .horiz }); 248 errdefer box.deinit(allocator); 249 250 // the directory listing on the left (one focusable row each). 251 { 252 var list_scroll = blk: { 253 var list_box = try wgt.Box(ui.Widget).init(allocator, .{ .border_style = null, .direction = .vert, .stretch = true }); 254 errdefer list_box.deinit(allocator); 255 256 // link kinds are borrowed by the rows, so they live in the page 257 // arena (as long as this page's widget tree). row labels are 258 // copied by their text boxes. 259 const aa = session.page_arena.allocator(); 260 if (data.dir.len != 0) { 261 try addRow(allocator, &list_box, "..", try dirLink(session.page_arena, data, parentDir(data.dir))); 262 } 263 for (data.entries) |entry| { 264 const path = try childDir(aa, data.dir, entry.name); 265 const label = if (entry.is_dir) try std.fmt.allocPrint(aa, "{s}/", .{entry.name}) else entry.name; 266 const link = if (entry.is_dir) 267 try dirLink(session.page_arena, data, path) 268 else 269 try fileLink(session.page_arena, data, path, entry.loaded, lineNumber(entry.window_start)); 270 try addRow(allocator, &list_box, label, link); 271 } 272 // select the file the route named, else prefer a README so its 273 // contents greet the visitor in the detail pane, else the first 274 // row. a non-root directory has a leading ".." row, so the entry 275 // index is offset by one there. 276 var sel: usize = 0; 277 if (list_box.children.count() > 0) { 278 const base: usize = if (data.dir.len != 0) 1 else 0; 279 const entry_idx = selectedFileIndex(data) orelse readmeIndex(data.entries); 280 sel = if (entry_idx) |i| i + base else 0; 281 list_box.getFocus().child_id = list_box.children.keys()[sel]; 282 } 283 var sc = try wgt.Scroll(ui.Widget).init(allocator, .{ .box = list_box }, .{ .direction = .vert, .web_native = !session.is_terminal, .fill = true }); 284 // start scrolled so the selected row begins at the top of the 285 // viewport. rows are a fixed height, so no layout pass is 286 // needed; a too-far offset near the end of the list is clamped 287 // in build (the browser clamps its own scrolling natively). 288 sc.y = @intCast(sel * row_height); 289 break :blk sc; 290 }; 291 errdefer list_scroll.deinit(allocator); 292 try box.children.put(allocator, list_scroll.getFocus().id, .{ .widget = .{ .scroll = list_scroll }, .rect = null, .min_size = .{ .width = list_max_width, .height = null }, .max_size = .{ .width = list_max_width, .height = null } }); 293 } 294 295 // the detail pane on the right — a "next" nav box above a scroll of the 296 // selected file's content window. both are repopulated per selection by 297 // populateDetail. 298 { 299 var detail_outer = blk: { 300 var frame = try wgt.Box(ui.Widget).init(allocator, .{ .border_style = null, .direction = .vert }); 301 errdefer frame.deinit(allocator); 302 303 { 304 var nav_box = try wgt.Box(ui.Widget).init(allocator, .{ .border_style = null, .direction = .horiz }); 305 errdefer nav_box.deinit(allocator); 306 try frame.children.put(allocator, nav_box.getFocus().id, .{ .widget = .{ .box = nav_box }, .rect = null, .min_size = null }); 307 } 308 { 309 // the content scroll wrapped in a bordered box; build sets the 310 // border single normally and double when the content is focused 311 // (the content box itself is borderless). 312 var scroll_frame = blk2: { 313 var detail_scroll = blk3: { 314 var detail_inner = try wgt.Box(ui.Widget).init(allocator, .{ .border_style = null, .direction = .vert }); 315 errdefer detail_inner.deinit(allocator); 316 break :blk3 try wgt.Scroll(ui.Widget).init(allocator, .{ .box = detail_inner }, .{ .direction = .both, .web_native = !session.is_terminal, .fill = true }); 317 }; 318 errdefer detail_scroll.deinit(allocator); 319 var sf = try wgt.Box(ui.Widget).init(allocator, .{ .border_style = .single, .rounded_corners = true, .direction = .vert }); 320 errdefer sf.deinit(allocator); 321 // the wrapper's selected child is its scroll, so the focus 322 // chain reaches the content box (populateDetail points the 323 // scroll's inner box at it). 324 sf.getFocus().child_id = detail_scroll.getFocus().id; 325 try sf.children.put(allocator, detail_scroll.getFocus().id, .{ .widget = .{ .scroll = detail_scroll }, .rect = null, .min_size = null }); 326 break :blk2 sf; 327 }; 328 errdefer scroll_frame.deinit(allocator); 329 // entering the detail pane lands on the content scroll (focus 330 // recovery descends the frame's selected child). the nav links 331 // above are reached by scrolling to the top, then up. 332 frame.getFocus().child_id = scroll_frame.getFocus().id; 333 // shrink, so the fill scroll yields the nav box's row 334 // instead of consuming the frame's whole height. 335 try frame.children.put(allocator, scroll_frame.getFocus().id, .{ .widget = .{ .box = scroll_frame }, .rect = null, .min_size = null, .flex = .shrink }); 336 } 337 break :blk frame; 338 }; 339 errdefer detail_outer.deinit(allocator); 340 try box.children.put(allocator, detail_outer.getFocus().id, .{ .widget = .{ .box = detail_outer }, .rect = null, .min_size = .{ .width = detail_min_width, .height = null } }); 341 } 342 343 box.getFocus().child_id = box.children.keys()[list_index]; 344 try outer.children.put(allocator, box.getFocus().id, .{ .widget = .{ .box = box }, .rect = null, .min_size = null }); 345 346 // focus lives in the split; the banner isn't focusable. 347 outer.getFocus().child_id = outer.children.keys()[content_index]; 348 return .{ .box = outer, .data = data, .session = session, .shown_index = null }; 349 } 350 351 fn addRow(allocator: std.mem.Allocator, box: *wgt.Box(ui.Widget), label: []const u8, link: []const u8) !void { 352 var row = try wgt.TextBox.init(allocator, label, .{ .border_style = .hidden, .rounded_corners = true, .wrap_kind = .none }); 353 errdefer row.deinit(allocator); 354 row.getFocus().focusable = true; 355 if (link.len != 0) row.getFocus().kind = .{ .custom = link }; 356 try box.children.put(allocator, row.getFocus().id, .{ .widget = .{ .text_box = row }, .rect = null, .min_size = null }); 357 } 358 359 // the selected file's contents as a single focusable multi-line text box. 360 // it's borderless — the border lives on the surrounding scroll frame, which 361 // doubles when this content is focused. a non-empty `link` makes activating 362 // the box follow it, like addRow. 363 fn addContentBox(self: *View, allocator: std.mem.Allocator, box: *wgt.Box(ui.Widget), text: []const u8, link: []const u8) !void { 364 _ = self; 365 var tb = try wgt.TextBox.init(allocator, text, .{ .border_style = null, .wrap_kind = .none }); 366 errdefer tb.deinit(allocator); 367 tb.getFocus().focusable = true; 368 if (link.len != 0) tb.getFocus().kind = .{ .custom = link }; 369 try box.children.put(allocator, tb.getFocus().id, .{ .widget = .{ .text_box = tb }, .rect = null, .min_size = null }); 370 } 371 372 pub fn deinit(self: *View, allocator: std.mem.Allocator) void { 373 self.box.deinit(allocator); 374 } 375 376 fn contentBox(self: *View) *wgt.Box(ui.Widget) { 377 return &self.box.children.values()[content_index].widget.box; 378 } 379 380 fn header(self: *View) *Header.View { 381 return &self.box.children.values()[header_index].widget.repo_files_header; 382 } 383 384 fn headerActive(self: *View) bool { 385 return self.box.getFocus().child_id == self.header().getFocus().id; 386 } 387 388 fn listScroll(self: *View) *wgt.Scroll(ui.Widget) { 389 return &self.contentBox().children.values()[list_index].widget.scroll; 390 } 391 392 fn listBox(self: *View) *wgt.Box(ui.Widget) { 393 return &self.listScroll().child.box; 394 } 395 396 fn detailOuter(self: *View) *wgt.Box(ui.Widget) { 397 return &self.contentBox().children.values()[detail_index].widget.box; 398 } 399 400 fn navBox(self: *View) *wgt.Box(ui.Widget) { 401 return &self.detailOuter().children.values()[detail_nav_index].widget.box; 402 } 403 404 // the bordered box wrapping the content scroll (border toggles with focus). 405 fn detailScrollFrame(self: *View) *wgt.Box(ui.Widget) { 406 return &self.detailOuter().children.values()[detail_scroll_index].widget.box; 407 } 408 409 fn detailScroll(self: *View) *wgt.Scroll(ui.Widget) { 410 return &self.detailScrollFrame().children.values()[0].widget.scroll; 411 } 412 413 fn detailInner(self: *View) *wgt.Box(ui.Widget) { 414 return &self.detailScroll().child.box; 415 } 416 417 fn detailActive(self: *View) bool { 418 const content = self.contentBox(); 419 const cid = content.getFocus().child_id orelse return false; 420 return content.children.getIndex(cid) == detail_index; 421 } 422 423 // the selected list row's index, or null when nothing is focused. 424 fn selectedRowIndex(self: *View) ?usize { 425 const lb = self.listBox(); 426 const cid = lb.getFocus().child_id orelse return null; 427 return lb.children.getIndex(cid); 428 } 429 430 // the entry the selected row points at, or null for the ".." row (which 431 // isn't an entry). directory rows return their entry too, though they carry 432 // no contents. 433 fn selectedEntry(self: *View) ?Entry { 434 const idx = self.selectedRowIndex() orelse return null; 435 const base: usize = if (self.data.dir.len != 0) 1 else 0; // skip the ".." row 436 if (idx < base) return null; 437 const e = idx - base; 438 if (e >= self.data.entries.len) return null; 439 return self.data.entries[e]; 440 } 441 442 pub fn build(self: *View, allocator: std.mem.Allocator, constraint: layout.Constraint, root_focus: *Focus) !void { 443 self.clearGrid(); 444 445 // swap the detail pane to the selected entry when the selection changes. 446 try self.refreshDetail(allocator); 447 448 // the selected list row shows a border (the focused TextBox upgrades it 449 // to a double border itself); the rest stay borderless. 450 const lb = self.listBox(); 451 for (lb.children.keys(), lb.children.values()) |id, *child| { 452 switch (child.widget) { 453 .text_box => |*tb| tb.options.border_style = if (lb.getFocus().child_id == id) .single else .hidden, 454 else => {}, 455 } 456 } 457 458 // the content scroll's border is single normally and double when the 459 // content is focused (the content box itself is borderless). 460 const has_content = self.detailInner().children.count() > 0; 461 const content_focused = if (root_focus.grandchild_id) |g| self.detailInner().children.contains(g) else false; 462 self.detailScrollFrame().options.border_style = if (!has_content) null else if (content_focused) .double else .single; 463 464 // cap the list at list_max_width only while the detail pane fits beside 465 // it. the box drops the detail pane when the width can't hold both 466 // minimums, so when it's that narrow we lift the cap and let the list 467 // fill the whole width. 468 const both_panes_fit = if (constraint.max_size.width) |w| w >= list_max_width + detail_min_width else true; 469 self.contentBox().children.values()[list_index].max_size = if (both_panes_fit) .{ .width = list_max_width, .height = null } else null; 470 471 // stretch the detail pane and its bordered scroll frame across the rest 472 // of the width so the pane fills the area rather than shrinking to its 473 // content, like the refs view's columns. the content scroll inside keeps 474 // its natural width: forcing it to the full inner width would make it one 475 // column too wide whenever the vertical scrollbar appears, leaving a 476 // phantom horizontal scroll. (height fills via the scroll clipping to the 477 // viewport.) 478 if (constraint.max_size.width) |w| { 479 const detail_w = if (both_panes_fit) w - list_max_width else w; 480 self.contentBox().children.values()[detail_index].min_size = .{ .width = detail_w, .height = null }; 481 self.detailOuter().children.values()[detail_scroll_index].min_size = .{ .width = detail_w, .height = null }; 482 } else { 483 self.contentBox().children.values()[detail_index].min_size = .{ .width = detail_min_width, .height = null }; 484 self.detailOuter().children.values()[detail_scroll_index].min_size = null; 485 } 486 487 // crossing panes only re-selects the content box's child (focusList / 488 // focusDetail); when the window is too narrow to show both, the pane that 489 // was holding focus is dropped here. the framework recovers focus after 490 // the top-level build by re-deriving it down the selected-child chain, so 491 // there's nothing to fix up afterward. 492 try self.box.build(allocator, constraint, root_focus); 493 494 // clamp the list's initial offset (a selected row near the end of the 495 // list) against this build's grids, for the next frame. initRoot's 496 // pre-sizing build is unbounded — its full-content "viewport" would 497 // clamp the offset to zero, so only a bounded build counts. 498 if (constraint.max_size.height != null) self.listScroll().clampToContent(); 499 } 500 501 fn refreshDetail(self: *View, allocator: std.mem.Allocator) !void { 502 const cur = self.selectedRowIndex(); 503 if (std.meta.eql(cur, self.shown_index)) return; 504 try self.populateDetail(allocator); 505 self.shown_index = cur; 506 } 507 508 fn populateDetail(self: *View, allocator: std.mem.Allocator) !void { 509 const nav_box = self.navBox(); 510 const inner = self.detailInner(); 511 512 for (nav_box.children.values()) |*child| child.widget.deinit(allocator); 513 nav_box.children.clearAndFree(allocator); 514 nav_box.getFocus().child_id = null; 515 for (inner.children.values()) |*child| child.widget.deinit(allocator); 516 inner.children.clearAndFree(allocator); 517 inner.getFocus().child_id = null; 518 519 // only files have contents to show; directories and the ".." row leave 520 // the pane empty. 521 if (self.selectedEntry()) |entry| { 522 if (!entry.is_dir) { 523 // the window links sit above the scroll, so they stay put 524 // while the content scrolls. 525 if (entry.window_start > 0) try self.addNavLink(allocator, nav_box, "scroll to top", entry, 0); 526 if (entry.has_more) try self.addNavLink(allocator, nav_box, "next lines →", entry, lineNumber(entry.window_start + file_page)); 527 if (!entry.loaded) { 528 // the placeholder carries the file's "a:" link, so enter 529 // (or a click) here loads the file like on its list row. 530 const path = try childDir(self.session.page_arena.allocator(), self.data.dir, entry.name); 531 const link = try fileLink(self.session.page_arena, self.data, path, false, 0); 532 try self.addContentBox(allocator, inner, "(press enter to load this file)", link); 533 } else if (entry.is_binary) { 534 try self.addContentBox(allocator, inner, "(binary file)", ""); 535 } else { 536 const text = try numberedContent(self.session.page_arena.allocator(), entry.lines, entry.window_start); 537 try self.addContentBox(allocator, inner, text, ""); 538 } 539 } 540 } 541 // point each box at its first child so focus can descend into it. 542 if (nav_box.children.count() > 0) nav_box.getFocus().child_id = nav_box.children.keys()[0]; 543 if (inner.children.count() > 0) inner.getFocus().child_id = inner.children.keys()[0]; 544 545 // reserve the nav row's height (the shrink scroll frame yields it). 546 self.detailOuter().children.values()[detail_nav_index].min_size = 547 if (nav_box.children.count() > 0) .{ .width = null, .height = row_height } else null; 548 549 // reset the scroll to the top for the newly-shown file: directly on the 550 // terminal (the wasm offset), and via a version bump on the web (so the 551 // renderer's scroll id changes and JS drops the preserved position). 552 const sc = self.detailScroll(); 553 sc.x = 0; 554 sc.y = 0; 555 sc.getFocus().version +%= 1; 556 } 557 558 // a focusable "next" link above the content. it's an `a:` link to the 559 // selected file at `target_start`, so activating it (the host follows the 560 // link) reloads the page on the next window. 561 fn addNavLink(self: *View, allocator: std.mem.Allocator, box: *wgt.Box(ui.Widget), label: []const u8, entry: Entry, target_start: usize) !void { 562 const page_arena = self.session.page_arena; 563 const path = try childDir(page_arena.allocator(), self.data.dir, entry.name); 564 const route = self.data.location.filesRoute(self.data.ref_or_oid, self.data.ref_or_oid_value, path, target_start) orelse return error.RouteTooLong; 565 const link = try std.fmt.allocPrint(page_arena.allocator(), "a:{s}", .{try route.toUrl(page_arena)}); 566 var tb = try wgt.TextBox.init(allocator, label, .{ .border_style = .single, .rounded_corners = true, .wrap_kind = .none }); 567 errdefer tb.deinit(allocator); 568 tb.getFocus().focusable = true; 569 tb.getFocus().kind = .{ .custom = link }; 570 try box.children.put(allocator, tb.getFocus().id, .{ .widget = .{ .text_box = tb }, .rect = null, .min_size = null }); 571 } 572 573 pub fn input(self: *View, allocator: std.mem.Allocator, key: Key, root_focus: *Focus) !void { 574 if (self.headerActive()) { 575 if (key == .arrow_down) { 576 root_focus.setFocus(self.contentBox().getFocus().id); 577 } else { 578 try self.header().input(allocator, key, root_focus); 579 } 580 return; 581 } 582 if (key == .arrow_up and self.contentAtTop() and self.header().focusCloneUrl(root_focus)) return; 583 if (self.detailActive()) { 584 try self.detailInput(key, root_focus); 585 } else { 586 try self.listInput(key, root_focus); 587 } 588 } 589 590 fn listInput(self: *View, key: Key, root_focus: *Focus) !void { 591 // up/down (and the scroll wheel) move the selection; page up/down jump a 592 // fixed amount. right/Enter cross into the detail pane. Enter/clicks on a 593 // directory (or "..") row are turned into navigation by the host 594 // (crossPageLink) before reaching here. 595 if (inp.rowDelta(key, @intCast(self.listBox().children.count()))) |delta| { 596 ui.widget.moveRowFocus(self.listBox(), self.listScroll(), root_focus, delta); 597 return; 598 } 599 switch (key) { 600 .enter, .arrow_right => try self.focusDetail(root_focus), 601 else => {}, 602 } 603 } 604 605 // whether focus is on the content box (vs. a "previous"/"next" nav link). 606 fn focusOnContent(self: *View, root_focus: *Focus) bool { 607 const g = root_focus.grandchild_id orelse return false; 608 return self.detailInner().children.contains(g); 609 } 610 611 fn detailInput(self: *View, key: Key, root_focus: *Focus) !void { 612 const sc = self.detailScroll(); 613 const on_content = self.focusOnContent(root_focus); 614 // the "next" link sits above the content scroll. on the link, left returns 615 // to the file list and down drops into the content. in the content, the 616 // terminal scrolls by offset and reaching the top then pressing up crosses 617 // back up to the link; on the web vertical scrolling is the browser's job 618 // so up just crosses to the link. 619 switch (key) { 620 .arrow_left => { 621 if (on_content) { 622 if (sc.x > 0) { 623 sc.x -= 1; 624 self.detailScroll().clampToContent(); 625 } else try self.focusList(root_focus); 626 } else if (!self.moveNav(root_focus, -1)) { 627 try self.focusList(root_focus); 628 } 629 }, 630 .arrow_right => { 631 if (on_content) { 632 sc.x += 1; 633 self.detailScroll().clampToContent(); 634 } else _ = self.moveNav(root_focus, 1); 635 }, 636 .arrow_up => { 637 if (on_content) { 638 if (self.session.is_terminal and sc.y > 0) { 639 sc.y -= 1; 640 self.detailScroll().clampToContent(); 641 } else self.focusNav(root_focus); // cross up to the links 642 } 643 }, 644 .arrow_down => { 645 if (on_content) { 646 if (self.session.is_terminal) { 647 sc.y += 1; 648 self.detailScroll().clampToContent(); 649 } 650 } else self.focusContent(root_focus); // links -> content 651 }, 652 .page_up => if (on_content and self.session.is_terminal) { 653 sc.y -= 10; 654 self.detailScroll().clampToContent(); 655 }, 656 .page_down => if (on_content and self.session.is_terminal) { 657 sc.y += 10; 658 self.detailScroll().clampToContent(); 659 }, 660 .home => if (on_content and self.session.is_terminal) { 661 sc.y = 0; 662 self.detailScroll().clampToContent(); 663 }, 664 .end => if (on_content and self.session.is_terminal) { 665 sc.y = std.math.maxInt(isize); 666 self.detailScroll().clampToContent(); 667 }, 668 .mouse => |mouse| switch (mouse.action) { 669 .scroll => |dir| if (on_content and self.session.is_terminal) { 670 sc.y += if (dir == .up) -5 else 5; 671 self.detailScroll().clampToContent(); 672 }, 673 else => {}, 674 }, 675 else => {}, 676 } 677 } 678 679 // focus the first (left-most) nav link; a no-op when there are none, leaving 680 // focus on the content. 681 fn focusNav(self: *View, root_focus: *Focus) void { 682 const nav_box = self.navBox(); 683 if (nav_box.children.count() == 0) return; 684 root_focus.setFocus(nav_box.children.keys()[0]); 685 } 686 687 fn focusContent(self: *View, root_focus: *Focus) void { 688 const inner = self.detailInner(); 689 const id = inner.getFocus().child_id orelse (if (inner.children.count() > 0) inner.children.keys()[0] else return); 690 root_focus.setFocus(id); 691 } 692 693 // move focus `delta` rows within the nav box; returns false (without moving) 694 // when that would step off either end. 695 fn moveNav(self: *View, root_focus: *Focus, delta: isize) bool { 696 const nav_box = self.navBox(); 697 const keys = nav_box.children.keys(); 698 const cur_id = nav_box.getFocus().child_id orelse return false; 699 const cur: isize = @intCast(nav_box.children.getIndex(cur_id) orelse return false); 700 const target = cur + delta; 701 if (target < 0 or target >= @as(isize, @intCast(keys.len))) return false; 702 root_focus.setFocus(keys[@intCast(target)]); 703 return true; 704 } 705 706 // enter the detail pane, landing on the "next" link when there is one (so 707 // right-arrow reaches it), else on the content. a directory or ".." row has 708 // neither, so there's nothing to enter. selecting the frame's child (then 709 // focusing the frame) also handles the too-narrow case where the pane isn't 710 // laid out yet — focus lands inside it after the next build. 711 fn focusDetail(self: *View, root_focus: *Focus) !void { 712 const frame = self.detailOuter(); 713 if (self.navBox().children.count() > 0) { 714 frame.getFocus().child_id = self.navBox().getFocus().id; 715 } else if (self.detailInner().children.count() > 0) { 716 frame.getFocus().child_id = self.detailScrollFrame().getFocus().id; 717 } else return; 718 root_focus.setFocus(frame.getFocus().id); 719 } 720 721 // return to the list. 722 fn focusList(self: *View, root_focus: *Focus) !void { 723 root_focus.setFocus(self.listScroll().getFocus().id); 724 } 725 726 pub fn clearGrid(self: *View) void { 727 self.box.clearGrid(); 728 } 729 730 pub fn getGrid(self: View) ?Grid { 731 return self.box.getGrid(); 732 } 733 734 pub fn getFocus(self: *View) *Focus { 735 return self.box.getFocus(); 736 } 737 738 fn contentAtTop(self: *View) bool { 739 if (self.detailActive()) { 740 if (self.detailOuter().getFocus().child_id == self.navBox().getFocus().id) return true; 741 return self.navBox().children.count() == 0 and 742 (!self.session.is_terminal or self.detailScroll().y == 0); 743 } 744 const lb = self.listBox(); 745 const cid = lb.getFocus().child_id orelse return true; 746 return lb.children.getIndex(cid) == 0; 747 } 748 749 // only the clone-url row sits directly below the repository header. 750 pub fn getSelectedIndex(self: *View) ?usize { 751 if (self.headerActive()) return 0; 752 return if (self.header().hasCloneUrl() or !self.contentAtTop()) 1 else 0; 753 } 754 755 pub fn focusCloneUrl(self: *View, root_focus: *Focus) bool { 756 return self.header().focusCloneUrl(root_focus); 757 } 758 }; 759 760 // join `lines` into one string, each prefixed with its 1-based file line number 761 // (right-aligned in a column wide enough for the last number, then a space), 762 // like the diffs view. `start` is the window's 0-based first line, so numbers 763 // continue across paginated windows. 764 fn numberedContent(arena: std.mem.Allocator, lines: []const []const u8, start: usize) ![]const u8 { 765 if (lines.len == 0) return ""; 766 const width = std.fmt.count("{d}", .{start + lines.len}); 767 const indent = try arena.alloc(u8, width); 768 @memset(indent, ' '); 769 770 var out: std.ArrayList(u8) = .empty; 771 for (lines, 0..) |line, i| { 772 if (i != 0) try out.append(arena, '\n'); 773 const num_str = try std.fmt.allocPrint(arena, "{d}", .{start + i + 1}); 774 try out.appendSlice(arena, indent[0 .. width - num_str.len]); 775 try out.appendSlice(arena, num_str); 776 try out.append(arena, ' '); 777 try out.appendSlice(arena, line); 778 } 779 return out.toOwnedSlice(arena); 780 } 781 782 // the index of the "README"/"README.md" file entry (case-insensitive), or null 783 // if none. used to pick the default selection at the repo root. 784 fn readmeIndex(entries: []const Entry) ?usize { 785 for (entries, 0..) |entry, i| { 786 if (!entry.is_dir and isReadme(entry.name)) return i; 787 } 788 return null; 789 } 790 791 fn isReadme(name: []const u8) bool { 792 return std.ascii.eqlIgnoreCase(name, "README") or std.ascii.eqlIgnoreCase(name, "README.md"); 793 } 794 795 // the index of the entry the route named (data.selected_file), or null if none. 796 fn selectedFileIndex(data: *const Self) ?usize { 797 const name = data.selected_file orelse return null; 798 for (data.entries, 0..) |entry, i| { 799 if (!entry.is_dir and std.mem.eql(u8, entry.name, name)) return i; 800 } 801 return null; 802 } 803 804 // an "a:" link to the files route at `path`, pinned to the listing's ref, so 805 // following it navigates to that directory's listing. 806 fn dirLink(page_arena: *std.heap.ArenaAllocator, data: *const Self, path: []const u8) ![]const u8 { 807 const route = data.location.filesRoute(data.ref_or_oid, data.ref_or_oid_value, path, 0) orelse return error.RouteTooLong; 808 return std.fmt.allocPrint(page_arena.allocator(), "a:{s}", .{try route.toUrl(page_arena)}); 809 } 810 811 // a link to the file's route. a preloaded file gets an "ai:" link 812 // (crossPageLink ignores it, so a click selects the row in place and shows its 813 // contents); an unloaded file gets an "a:" link, so activating it reloads the 814 // page with that file selected and its content read. 815 fn fileLink(page_arena: *std.heap.ArenaAllocator, data: *const Self, path: []const u8, loaded: bool, line: usize) ![]const u8 { 816 const route = data.location.filesRoute(data.ref_or_oid, data.ref_or_oid_value, path, line) orelse return error.RouteTooLong; 817 const prefix = if (loaded) "ai:" else "a:"; 818 return std.fmt.allocPrint(page_arena.allocator(), "{s}{s}", .{ prefix, try route.toUrl(page_arena) }); 819 } 820 821 // the url `line` value for a content window: its first line's 1-based number, 822 // except the first window, which serializes as unset (0). 823 fn lineNumber(window_start: usize) usize { 824 return if (window_start == 0) 0 else window_start + 1; 825 } 826 827 // `dir`/`name`, or just `name` at the root. 828 pub fn childDir(arena: std.mem.Allocator, dir: []const u8, name: []const u8) ![]const u8 { 829 return if (dir.len == 0) name else std.fmt.allocPrint(arena, "{s}/{s}", .{ dir, name }); 830 } 831 832 // `dir` with its last segment removed ("" when `dir` has a single segment). 833 fn parentDir(dir: []const u8) []const u8 { 834 const slash = std.mem.lastIndexOfScalar(u8, dir, '/') orelse return ""; 835 return dir[0..slash]; 836 } 837 838 // the "<ref_or_oid> <value>" banner shown above the listing. 839 pub const Header = struct { 840 content: []const u8, 841 842 // `value` arrives url-encoded, so decode it for display. 843 pub fn init(aa: std.mem.Allocator, ref_or_oid: ui.RoutablePage.RefOrOid, value: []const u8) !Header { 844 const decoded = std.Uri.percentDecodeInPlace(try aa.dupe(u8, value)); 845 return .{ 846 .content = try std.fmt.allocPrint(aa, "{s} {s}", .{ @tagName(ref_or_oid), decoded }), 847 }; 848 } 849 850 pub const View = struct { 851 box: wgt.Box(ui.Widget), 852 data: *const Header, 853 854 pub fn init(allocator: std.mem.Allocator, data: *const Header, session: *ui.Session, location: ui.RoutablePage.RepoLocation) !Header.View { 855 var box = try wgt.Box(ui.Widget).init(allocator, .{ .border_style = null, .direction = .horiz }); 856 errdefer box.deinit(allocator); 857 858 if (!session.data.is_local) { 859 if (try ui.widget.CopyableText.initClone(allocator, session, location)) |value| { 860 var clone_url = value; 861 errdefer clone_url.deinit(allocator); 862 const min_width = clone_url.minWidth(); 863 box.getFocus().child_id = clone_url.getFocus().id; 864 try box.children.put(allocator, clone_url.getFocus().id, .{ .widget = .{ .copyable_text = clone_url }, .rect = null, .min_size = .{ .width = min_width, .height = 3 }, .max_size = .{ .width = min_width, .height = 3 } }); 865 } 866 } 867 868 var spacer = try ui.widget.Spacer.init(allocator); 869 errdefer spacer.deinit(allocator); 870 try box.children.put(allocator, spacer.getFocus().id, .{ .widget = .{ .spacer = spacer }, .rect = null, .min_size = null }); 871 872 var text_box = try wgt.TextBox.init(allocator, data.content, .{ .border_style = .hidden, .wrap_kind = .none }); 873 errdefer text_box.deinit(allocator); 874 try box.children.put(allocator, text_box.getFocus().id, .{ .widget = .{ .text_box = text_box }, .rect = null, .min_size = null, .flex = .shrink }); 875 876 return .{ .box = box, .data = data }; 877 } 878 879 pub fn deinit(self: *Header.View, allocator: std.mem.Allocator) void { 880 self.box.deinit(allocator); 881 } 882 883 pub fn build(self: *Header.View, allocator: std.mem.Allocator, constraint: layout.Constraint, root_focus: *Focus) !void { 884 self.clearGrid(); 885 try self.box.build(allocator, constraint, root_focus); 886 } 887 888 pub fn input(self: *Header.View, allocator: std.mem.Allocator, key: Key, root_focus: *Focus) !void { 889 const clone_url = self.cloneUrl() orelse return; 890 try clone_url.input(allocator, key, root_focus); 891 } 892 893 pub fn focusCloneUrl(self: *Header.View, root_focus: *Focus) bool { 894 const clone_url = self.cloneUrl() orelse return false; 895 root_focus.setFocus(clone_url.getFocus().id); 896 return true; 897 } 898 899 pub fn hasCloneUrl(self: *Header.View) bool { 900 return self.cloneUrl() != null; 901 } 902 903 fn cloneUrl(self: *Header.View) ?*ui.widget.CopyableText { 904 for (self.box.children.values()) |*child| switch (child.widget) { 905 .copyable_text => |*copyable_text| return copyable_text, 906 else => {}, 907 }; 908 return null; 909 } 910 911 pub fn clearGrid(self: *Header.View) void { 912 self.box.clearGrid(); 913 } 914 915 pub fn getGrid(self: Header.View) ?Grid { 916 return self.box.getGrid(); 917 } 918 919 pub fn getFocus(self: *Header.View) *Focus { 920 return self.box.getFocus(); 921 } 922 }; 923 }; 924