Add generic cyclable label & base session component off it

Signed-off-by: AnErrupTion <anerruption@disroot.org>
2025-12-21 11:44:55 +00:00 · 2024-07-31 13:21:54 +02:00
parent 8b12ade372
commit 961018e753
5 changed files with 277 additions and 242 deletions
--- a/src/tui/components/generic.zig
+++ b/src/tui/components/generic.zig
@@ -0,0 +1,105 @@
+const std = @import("std");
+const enums = @import("../../enums.zig");
+const interop = @import("../../interop.zig");
+const TerminalBuffer = @import("../TerminalBuffer.zig");
+
+pub fn CyclableLabel(comptime ItemType: type) type {
+    return struct {
+        const Allocator = std.mem.Allocator;
+        const ItemList = std.ArrayList(ItemType);
+        const DrawItemFn = *const fn (Self, ItemType, usize, usize) bool;
+
+        const termbox = interop.termbox;
+
+        const Self = @This();
+
+        allocator: Allocator,
+        buffer: *TerminalBuffer,
+        list: ItemList,
+        current: usize,
+        visible_length: usize,
+        x: usize,
+        y: usize,
+        draw_item_fn: DrawItemFn,
+
+        pub fn init(allocator: Allocator, buffer: *TerminalBuffer, max_length: usize, draw_item_fn: DrawItemFn) !Self {
+            return .{
+                .allocator = allocator,
+                .buffer = buffer,
+                .list = try ItemList.initCapacity(allocator, max_length),
+                .current = 0,
+                .visible_length = 0,
+                .x = 0,
+                .y = 0,
+                .draw_item_fn = draw_item_fn,
+            };
+        }
+
+        pub fn deinit(self: Self) void {
+            self.list.deinit();
+        }
+
+        pub fn position(self: *Self, x: usize, y: usize, visible_length: usize) void {
+            self.x = x;
+            self.y = y;
+            self.visible_length = visible_length;
+        }
+
+        pub fn addItem(self: *Self, item: ItemType) !void {
+            try self.list.append(item);
+            self.current = self.list.items.len - 1;
+        }
+
+        pub fn handle(self: *Self, maybe_event: ?*termbox.tb_event, insert_mode: bool) void {
+            if (maybe_event) |event| blk: {
+                if (event.type != termbox.TB_EVENT_KEY) break :blk;
+
+                switch (event.key) {
+                    termbox.TB_KEY_ARROW_LEFT, termbox.TB_KEY_CTRL_H => self.goLeft(),
+                    termbox.TB_KEY_ARROW_RIGHT, termbox.TB_KEY_CTRL_L => self.goRight(),
+                    else => {
+                        if (!insert_mode) {
+                            switch (event.ch) {
+                                'h' => self.goLeft(),
+                                'l' => self.goRight(),
+                                else => {},
+                            }
+                        }
+                    },
+                }
+            }
+
+            _ = termbox.tb_set_cursor(@intCast(self.x + 2), @intCast(self.y));
+        }
+
+        pub fn draw(self: Self) void {
+            const current_item = self.list.items[self.current];
+            const x = self.buffer.box_x + self.buffer.margin_box_h;
+            const y = self.buffer.box_y + self.buffer.margin_box_v + 2;
+
+            const continue_drawing = @call(.auto, self.draw_item_fn, .{ self, current_item, x, y });
+            if (!continue_drawing) return;
+
+            _ = termbox.tb_set_cell(@intCast(self.x), @intCast(self.y), '<', self.buffer.fg, self.buffer.bg);
+            _ = termbox.tb_set_cell(@intCast(self.x + self.visible_length - 1), @intCast(self.y), '>', self.buffer.fg, self.buffer.bg);
+        }
+
+        fn goLeft(self: *Self) void {
+            if (self.current == 0) {
+                self.current = self.list.items.len - 1;
+                return;
+            }
+
+            self.current -= 1;
+        }
+
+        fn goRight(self: *Self) void {
+            if (self.current == self.list.items.len - 1) {
+                self.current = 0;
+                return;
+            }
+
+            self.current += 1;
+        }
+    };
+}