Zsolt Tasnadi
8a3e38aa25
- Negotiate NAWS (option 31) on connect to receive terminal cols/rows - Expose term_cols/term_rows on Session (default 80×24) - Add term_cols/term_rows helpers to TUIRunner::Context - Make bar() default width dynamic via term_cols Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
108 lines
2.9 KiB
Ruby
108 lines
2.9 KiB
Ruby
# frozen_string_literal: true
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module BBS
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class TUIRunner
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def initialize(session, session_id, tui)
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@session = session
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@session_id = session_id
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@tui = tui
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end
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def run
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ctx = Context.new(@session, @session_id)
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ctx.instance_eval(&@tui.init_block) if @tui.init_block
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loop do
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ctx.do_render(@tui.render_block) if @tui.render_block
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key = @session.readkey
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break if key.nil?
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handler = @tui.key_bindings[key]
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next unless handler
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result = handler.is_a?(Symbol) ? handler : ctx.instance_eval(&handler)
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break if result == :halt
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end
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rescue IOError, Errno::EPIPE, Errno::ECONNRESET
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nil
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ensure
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@session.write("\e[?25h\e[2J\e[H")
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end
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class Context
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STYLES = FlowRunner::STYLES
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def initialize(session, session_id)
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@session = session
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@session_id = session_id
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@buf = +""
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end
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def do_render(block)
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@buf = +"\e[?25l"
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instance_eval(&block)
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@buf << "\e[?25h"
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@session.write(@buf)
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end
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# ── drawing primitives ────────────────────────────────────────────────
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def clear
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@buf << "\e[2J\e[H"
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end
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def at(col, row)
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@buf << "\e[#{row};#{col}H"
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end
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def term_cols = @session.term_cols || 80
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def term_rows = @session.term_rows || 24
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def text(content, x: nil, y: nil, style: nil)
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at(x, y) if x && y
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color = STYLES[style]
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@buf << (color ? "#{color}#{content}\e[0m" : content.to_s)
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end
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def bar(y:, content:, width: nil, style: :muted)
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width ||= term_cols
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text content.to_s.ljust(width), x: 1, y: y, style: style
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end
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def list(items, x:, y:, selected: nil, style: :muted, highlight: :success)
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norm = STYLES.fetch(style, STYLES[:muted])
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hi = STYLES.fetch(highlight, STYLES[:success])
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items.each_with_index do |item, i|
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at x, y + i
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@buf << (i == selected ? "#{hi}▶ #{item}\e[0m" : "#{norm} #{item}\e[0m")
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end
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end
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def box(x:, y:, w:, h:, title: nil, style: :muted)
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color = STYLES.fetch(style, STYLES[:muted])
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inner = w - 2
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at x, y
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if title
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prefix = "══ #{title} "
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fill = [inner - prefix.length, 0].max
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@buf << "#{color}╔#{prefix}#{'═' * fill}╗\e[0m"
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else
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@buf << "#{color}╔#{'═' * inner}╗\e[0m"
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end
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(1...h - 1).each do |dy|
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at x, y + dy
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@buf << "#{color}║\e[0m#{' ' * inner}#{color}║\e[0m"
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end
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at x, y + h - 1
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@buf << "#{color}╚#{'═' * inner}╝\e[0m"
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yield x + 1, y + 1, inner, h - 2 if block_given?
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end
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end
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end
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end
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